@article{PaethPaxianSeinetal.2017, author = {Paeth, Heiko and Paxian, Andreas and Sein, Dimitry V. and Jacob, Daniela and Panitz, Hans-J{\"u}rgen and Warscher, Michael and Fink, Andreas H. and Kunstmann, Harald and Breil, Marcus and Engel, Thomas and Krause, Andreas and Toedter, Julian and Ahrens, Bodo}, title = {Decadal and multi-year predictability of the West African monsoon and the role of dynamical downscaling}, series = {Meteorologische Zeitschrift}, volume = {26}, journal = {Meteorologische Zeitschrift}, number = {4}, doi = {10.1127/metz/2017/0811}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172018}, pages = {363-377}, year = {2017}, abstract = {West African summer monsoon precipitation is characterized by distinct decadal variability. Due to its welldocumented link to oceanic boundary conditions in various ocean basins it represents a paradigm for decadal predictability. In this study, we reappraise this hypothesis for several sub-regions of sub-Saharan West Africa using the new German contribution to the coupled model intercomparison project phase 5 (CMIP5) near-term prediction system. In addition, we assume that dynamical downscaling of the global decadal predictions leads to an enhanced predictive skill because enhanced resolution improves the atmospheric response to oceanic forcing and landsurface feedbacks. Based on three regional climate models, a heterogeneous picture is drawn: none of the regional climate models outperforms the global decadal predictions or all other regional climate models in every region nor decade. However, for every test case at least one regional climate model was identified which outperforms the global predictions. The highest predictive skill is found in the western and central Sahel Zone with correlation coefficients and mean-square skill scores exceeding 0.9 and 0.8, respectively.}, language = {en} } @article{Ott2017, author = {Ott, Christine}, title = {Literarisches Dorfleben in Maienfeld oder Wie Heidi lebte.}, series = {kjl\&m - Kinder-/Jugendliteratur und Medien in Forschung, Literatur und Bibliothek}, volume = {69}, journal = {kjl\&m - Kinder-/Jugendliteratur und Medien in Forschung, Literatur und Bibliothek}, number = {3}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-210610}, pages = {14-22}, year = {2017}, abstract = {Kein Abstract verf{\"u}gbar.}, language = {de} } @article{OezkurMagyarThomasetal.2017, author = {Oezkur, Mehmet and Magyar, Attila and Thomas, Phillip and Stork, Tabea and Schneider, Reinhard and Bening, Constanze and St{\"o}rk, Stefan and Heuschmann, Peter U. and Leyh, Rainer G. and Wagner, Martin}, title = {TIMP-2*IGFBP7 (Nephrocheck®) Measurements at Intensive Care Unit Admission After Cardiac Surgery are Predictive for Acute Kidney Injury Within 48 Hours}, series = {Kidney \& Blood Pressure Research}, volume = {42}, journal = {Kidney \& Blood Pressure Research}, doi = {10.1159/000479298}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157988}, pages = {456-467}, year = {2017}, abstract = {Background/Aims: Acute kidney injury (AKI) is a postoperative complication after cardiac surgery with a high impact on mortality and morbidity. Nephrocheck® [TIMP-2*IGFBP7] determines markers of tubular stress, which occurs prior to tubular damage. It is unknown at which time-point [TIMP-2*IGFBP7] measurement should be performed to ideally predict AKI. We investigated the association of [TIMP-2*IGFBP7] at various time-points with the incidence of AKI in patients undergoing elective cardiac surgery including cardio-pulmonary bypass. Methods: In a prospective cohort study, serial blood and urine samples were collected from 150 patients: pre-operative, at ICU-admission, 24h and 48h post-surgery. AKI was defined as Serum-Creatinine rise >0.3 mg/dl within 48hrs. Urinary [TIMP-2*IGFBP7] was measured at pre-operative, ICU-admission and 24h post-surgery; medical staff was kept blinded to these results. Results: A total of 35 patients (23.5\%) experienced AKI, with a higher incidence in those with high [TIMP-2*IGFBP7] values at ICU admission (57.1\% vs. 10.1\%, p<0.001). In logistic regression [TIMP-2*IGFBP7] at ICU admission was independently associated with the occurrence of AKI (Odds Ratio 11.83; p<0.001, C-statistic= 0.74) after adjustment for EuroSCORE II and CBP-time. Conclusions: Early detection of elevated [TIMP-2*IGFBP7] at ICU admission was strongly predictive for postoperative AKI and appeared to be more precise as compared to subsequent measurements.}, language = {en} } @article{OehlerMohammadiPerpinaVicianoetal.2017, author = {Oehler, Beatrice and Mohammadi, Milad and Perpina Viciano, Cristina and Hackel, Dagmar and Hoffmann, Carsten and Brack, Alexander and Rittner, Heike L.}, title = {Peripheral interaction of Resolvin D1 and E1 with opioid receptor antagonists for antinociception in inflammatory pain in rats}, series = {Frontiers in Molecular Neuroscience}, volume = {10}, journal = {Frontiers in Molecular Neuroscience}, number = {242}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158642}, year = {2017}, abstract = {Antinociceptive pathways are activated in the periphery in inflammatory pain, for instance resolvins and opioid peptides. Resolvins are biosynthesized from omega-3 polyunsaturated fatty acids such as eicosapentaenoic acid and docosahexaenoic acid. Resolvin D1 (RvD1) and resolvin E1 (RvE1) initiate the resolution of inflammation and control of hypersensitivity via induction of anti-inflammatory signaling cascades. RvD1 binds to lipoxin A4/annexin-A1 receptor/formyl-peptide receptor 2 (ALX/FPR2), RvE1 to chemerin receptor 23 (ChemR23). Antinociception of RvD1 is mediated by interaction with transient receptor potential channels ankyrin 1 (TRPA1). Endogenous opioid peptides are synthesized and released from leukocytes in the tissue and bind to opioid receptors on nociceptor terminals. Here, we further explored peripheral mechanisms of RvD1 and chemerin (Chem), the ligand of ChemR23, in complete Freund's adjuvant (CFA)-induced hindpaw inflammation in male Wistar rats. RvD1 and Chem ameliorated CFA-induced hypersensitivity in early and late inflammatory phases. This was prevented by peripheral blockade of the μ-opioid peptide receptor (MOR) using low dose local naloxone or by local injection of anti-β-endorphin and anti-met-enkephalin (anti-ENK) antibodies. Naloxone also hindered antinociception by the TRPA1 inhibitor HC-030031. RvD1 did not stimulate the release of β-endorphin from macrophages and neutrophils, nor did RvD1 itself activate G-proteins coupled MOR or initiate β-arrestin recruitment to the membrane. TRPA1 blockade by HC-030031 in inflammation in vivo as well as inhibition of the TRPA1-mediated calcium influx in dorsal root ganglia neurons in vitro was hampered by naloxone. Peripheral application of naloxone alone in vivo already lowered mechanical nociceptive thresholds. Therefore, either a perturbation of the balance of endogenous pro- and antinociceptive mechanisms in early and late inflammation, or an interaction of TRPA1 and opioid receptors weaken the antinociceptive potency of RvD1 and TRPA1 blockers.}, language = {en} } @article{OehlerKistnerMartinetal.2017, author = {Oehler, Beatrice and Kistner, Katrin and Martin, Corinna and Schiller, J{\"u}rgen and Mayer, Rafaela and Mohammadi, Milad and Sauer, Reine-Solange and Filipovic, Milos R. and Nieto, Francisco R. and Kloka, Jan and Pfl{\"u}cke, Diana and Hill, Kerstin and Schaefer, Michael and Malcangio, Marzia and Reeh, Peter W. and Brack, Alexander and Blum, Robert and Rittner, Heike L.}, title = {Inflammatory pain control by blocking oxidized phospholipid-mediated TRP channel activation}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, number = {5447}, doi = {10.1038/s41598-017-05348-3}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158536}, year = {2017}, abstract = {Phospholipids occurring in cell membranes and lipoproteins are converted into oxidized phospholipids (OxPL) by oxidative stress promoting atherosclerotic plaque formation. Here, OxPL were characterized as novel targets in acute and chronic inflammatory pain. Oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine (OxPAPC) and its derivatives were identified in inflamed tissue by mass spectrometry and binding assays. They elicited calcium influx, hyperalgesia and induced pro-nociceptive peptide release. Genetic, pharmacological and mass spectrometric evidence in vivo as well as in vitro confirmed the role of transient receptor potential channels (TRPA1 and TRPV1) as OxPAPC targets. Treatment with the monoclonal antibody E06 or with apolipoprotein A-I mimetic peptide D-4F, capturing OxPAPC in atherosclerosis, prevented inflammatory hyperalgesia, and in vitro TRPA1 activation. Administration of D-4F or E06 to rats profoundly ameliorated mechanical hyperalgesia and inflammation in collagen-induced arthritis. These data reveal a clinically relevant role for OxPAPC in inflammation offering therapy for acute and chronic inflammatory pain treatment by scavenging OxPAPC.}, language = {en} } @article{NuernbergerSteffanDewenterHaertel2017, author = {N{\"u}rnberger, Fabian and Steffan-Dewenter, Ingolf and H{\"a}rtel, Stephan}, title = {Combined effects of waggle dance communication and landscape heterogeneity on nectar and pollen uptake in honey bee colonies}, series = {PeerJ}, volume = {5}, journal = {PeerJ}, number = {e3441}, doi = {10.7717/peerj.3441}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170813}, year = {2017}, abstract = {The instructive component of waggle dance communication has been shown to increase resource uptake of Apis mellifera colonies in highly heterogeneous resource environments, but an assessment of its relevance in temperate landscapes with different levels of resource heterogeneity is currently lacking. We hypothesized that the advertisement of resource locations via dance communication would be most relevant in highly heterogeneous landscapes with large spatial variation of floral resources. To test our hypothesis, we placed 24 Apis mellifera colonies with either disrupted or unimpaired instructive component of dance communication in eight Central European agricultural landscapes that differed in heterogeneity and resource availability. We monitored colony weight change and pollen harvest as measure of foraging success. Dance disruption did not significantly alter colony weight change, but decreased pollen harvest compared to the communicating colonies by 40\%. There was no general effect of resource availability on nectar or pollen foraging success, but the effect of landscape heterogeneity on nectar uptake was stronger when resource availability was high. In contrast to our hypothesis, the effects of disrupted bee communication on nectar and pollen foraging success were not stronger in landscapes with heterogeneous compared to homogenous resource environments. Our results indicate that in temperate regions intra-colonial communication of resource locations benefits pollen foraging more than nectar foraging, irrespective of landscape heterogeneity. We conclude that the so far largely unexplored role of dance communication in pollen foraging requires further consideration as pollen is a crucial resource for colony development and health.}, language = {en} } @article{NordPalkowitschKuehl2017, author = {Nord, Ilona and Palkowitsch-K{\"u}hl, Jens}, title = {RELab digital: Ein Projekt zu religi{\"o}ser Bildung in einer mediatisierten Welt}, series = {Zeitschrift f{\"u}r P{\"a}dagogik und Theologie}, volume = {69}, journal = {Zeitschrift f{\"u}r P{\"a}dagogik und Theologie}, number = {3}, issn = {2366-7796}, doi = {10.1515/zpt-2017-0031}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-194880}, pages = {270-283}, year = {2017}, abstract = {Schule als Lern- und Lebensort zuk{\"u}nftiger Generationen partizipiert an global sich vollziehenden medialen Transformationsprozessen. Religionsp{\"a}dagogik und -didaktik sind, wie alle anderen Fachwissenschaften auch, herausgefordert, die Integration digitaler Medien in Theorie und Praxis zu reflektieren und konzeptionieren. Dies hat in mindestens drei Dimensionen zu erfolgen: beim Lernen mit digitalen Medien, beim Lernen {\"u}ber digitale Medien sowie in der Ein{\"u}bung in eine konstruktiv-kritische Medienbildung. Das Projekt ist der Entwicklung, Erprobung und Evaluation von Lernszenarien im Religionsunterricht und im Austausch mit außerschulischen religi{\"o}sen Bildungsorten gewidmet.}, language = {de} } @article{Nord2017, author = {Nord, Ilona}, title = {Wolfhard Schweiker, Prinzip Inklusion. Grundlagen einer interdisziplin{\"a}ren Metatheorie in religionsp{\"a}dagogischer Perspektive. G{\"o}ttingen: Vandenhoeck \& Ruprecht 2017.}, series = {Zeitschrift f{\"u}r P{\"a}dagogik und Theologie}, volume = {69}, journal = {Zeitschrift f{\"u}r P{\"a}dagogik und Theologie}, number = {3}, issn = {2366-7796}, doi = {10.1515/zpt-2017-0032}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-194874}, pages = {284-287}, year = {2017}, abstract = {Kein Abstract verf{\"u}gbar.}, language = {de} } @article{NeuchelFuerstNiederwieseretal.2017, author = {Neuchel, Christine and F{\"u}rst, Daniel and Niederwieser, Dietger and Bunjes, Donald and Tsamadou, Chrysanthi and Wulf, Gerald and Pfreundschuh, Michael and Wagner, Eva and Stuhler, Gernot and Einsele, Hermann and Schrezenmeier, Hubert and Mytilineos, Joannis}, title = {Impact of donor activating KIR genes on HSCT outcome in C1-ligand negative myeloid disease patients transplanted with unrelated donors - a retrospective study}, series = {PLOS One}, volume = {12}, journal = {PLOS One}, number = {1}, doi = {10.1371/journal.pone.0169512}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-180995}, pages = {39}, year = {2017}, abstract = {Natural Killer cells (NK) are lymphocytes with the potential to recognize and lyse cells which escaped T-cell mediated lysis due to their aberrant HLA expression profiles. Killer cell immunoglobulin-like receptors (KIR) influence NK-cell activity by mediation of activating or inhibitory signals upon interaction with HLA-C (C1, C2) ligands. Therefore, absence of ligands for donor inhibitory KIRs following hematopoietic stem cell transplantation (HSCT) may have an influence on its outcome. Previous studies showed that C1 negative patients have a decreased HSCT outcome. Our study, based on a cohort of 200 C1-negative patients, confirmed these findings for the endpoints: overall survival (OS: HR = 1.41, CI = 1.14-1.74, p = 0.0012), disease free survival (DFS: HR = 1.27, CI = 1.05-1.53, p = 0.015), treatment related mortality (TRM: HR = 1.41, CI = 1.01-1.96, p = 0.04), and relapse incidence (RI: HR = 1.33, CI = 1.01-1.75, p = 0.04) all being inferior when compared to C1-positive patients (n = 1246). Subsequent analysis showed that these findings applied for patients with myeloid malignancies but not for patients with lymphoproliferative diseases (OS: myeloid: HR = 1.51, CI = 1.15-1.99, p = 0.003; lymphoblastic: HR = 1.26, CI = 0.91-1.75, p = 0.16; DFS: myeloid: HR = 1.31, CI = 1.01-1.70, p = 0.04; lymphoblastic: HR = 1.21, CI = 0.90-1.61, p = 0.21; RI: myeloid: HR = 1.31, CI = 1.01-1.70, p = 0.04; lymphoblastic: HR = 1.21, CI = 0.90-1.61, p = 0.21). Interestingly, within the C1-negative patient group, transplantation with KIR2DS2 resulted in better OS (9/10 matched: HR = 0.24, CI = 0.08-0.67, p = 0.007) as well as DFS (9/10 matched: HR = 0,26, CI = 0.11-0.60, p = 0.002), and transplantation with KIR2DS1 positive donors was associated with a decreased RI (HR = 0.30, CI = 0.13-0.69, p = 0.005). TRM was increased when the donor was positive for KIR2DS1 (HR = 2.61, CI = 1.26-5.41, p = 0.001). Our findings suggest that inclusion of KIR2DS1/2/5 and KIR3DS1-genotyping in the unrelated donor search algorithm of C1-ligand negative patients with myeloid malignancies may prove to be of clinical relevance.}, language = {en} } @article{MuenchowMengelkampBannert2017, author = {M{\"u}nchow, Hannes and Mengelkamp, Christoph and Bannert, Maria}, title = {The better you feel the better you learn: do warm colours and rounded shapes enhance learning outcome in multimedia learning?}, series = {Education Research International}, volume = {2017}, journal = {Education Research International}, doi = {10.1155/2017/2148139}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158566}, pages = {2148139}, year = {2017}, abstract = {The aim of the present study was to examine whether fostering positive activating affect during multimedia learning enhances learning outcome. University students were randomly assigned to either a multimedia learning environment designed to induce positive activating affect through the use of "warm" colours and rounded shapes () or an affectively neutral environment that used achromatic colours and sharp edges (). Participants learned about the topic of functional neuroanatomy for 20 minutes and had to answer several questions for comprehension and transfer afterwards. Affective states as well as achievement goal orientations were investigated before and after the learning phase using questionnaires. The results show that participants in the affectively positive environment were superior in comprehension as well as transfer when initial affect was strong. Preexperimental positive affect was therefore a predictor of comprehension and a moderator for transfer. Goal orientations did not influence these effects. The findings support the idea that positive affect, induced through the design of the particular multimedia learning environment, can facilitate performance if initial affective states are taken into account.}, language = {en} } @article{MuellerDeubertSeefriedKrugetal.2017, author = {M{\"u}ller-Deubert, Sigrid and Seefried, Lothar and Krug, Melanie and Jakob, Franz and Ebert, Regina}, title = {Epidermal growth factor as a mechanosensitizer in human bone marrow stromal cells}, series = {Stem Cell Research}, volume = {24}, journal = {Stem Cell Research}, doi = {10.1016/j.scr.2017.08.012}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170247}, pages = {69-76}, year = {2017}, abstract = {Epidermal growth factors (EGFs) e.g. EGF, heparin-binding EGF and transforming growth factor alpha and their receptors e.g. EGFR and ErbB2 control proinflammatory signaling and modulate proliferation in bone marrow stromal cells (BMSC). Interleukin-6 and interleukin-8 are EGF targets and participate in the inflammatory phase of bone regeneration via non-canonical wnt signaling. BMSC differentiation is also influenced by mechanical strain-related activation of ERK1/2 and AP-1, but the role of EGFR signaling in mechanotransduction is unclear. We investigated the effects of EGFR signaling in telomerase-immortalized BMSC, transfected with a luciferase reporter, comprising a mechanoresponsive AP1 element, using ligands, neutralizing antibodies and EGFR inhibitors on mechanotransduction and we found that EGF via EGFR increased the response to mechanical strain. Results were confirmed by qPCR analysis of mechanoresponsive genes. EGF-responsive interleukin-6 and interleukin-8 were synergistically enhanced by EGF stimulation and mechanical strain. We show here in immortalized and primary BMSC that EGFR signaling enhances mechanotransduction, indicating that the EGF system is a mechanosensitizer in BMSC. Alterations in mechanosensitivity and -adaptation are contributors to age-related diseases like osteoporosis and the identification of a suitable mechanosensitizer could be beneficial. The role of the synergism of these signaling cascades in physiology and disease remains to be unraveled.}, language = {en} } @article{MuellerRichterKarageorgosetal.2017, author = {M{\"u}ller, Bettina and Richter, Tobias and Karageorgos, Panagiotis and Krawietz, Sabine and Ennemoser, Marco}, title = {Effects of a syllable-based reading intervention in poor-reading fourth graders}, series = {Frontiers in Psychology}, volume = {8}, journal = {Frontiers in Psychology}, number = {1635}, doi = {10.3389/fpsyg.2017.01635}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158841}, year = {2017}, abstract = {In transparent orthographies, persistent reading fluency difficulties are a major cause of poor reading skills in primary school. The purpose of the present study was to investigate effects of a syllable-based reading intervention on word reading fluency and reading comprehension among German-speaking poor readers in Grade 4. The 16-session intervention was based on analyzing the syllabic structure of words to strengthen the mental representations of syllables and words that consist of these syllables. The training materials were designed using the 500 most frequent syllables typically read by fourth graders. The 75 poor readers were randomly allocated to the treatment or the control group. Results indicate a significant and strong effect on the fluency of recognizing single words, whereas text-level reading comprehension was not significantly improved by the training. The specific treatment effect provides evidence that a short syllable-based approach works even in older poor readers at the end of primary school.}, language = {en} } @article{MuelekSeefriedGenestetal.2017, author = {M{\"u}lek, Melanie and Seefried, Lothar and Genest, Franca and H{\"o}gger, Petra}, title = {Distribution of constituents and metabolites of maritime pine bark extract (Pycnogenol\(^{®}\)) into serum, blood cells, and synovial fluid of patients with severe osteoarthritis: a randomized controlled trial}, series = {Nutrients}, volume = {9}, journal = {Nutrients}, number = {5}, doi = {10.3390/nu9050443}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159862}, pages = {443}, year = {2017}, abstract = {The present randomized controlled study aimed to investigate the in vivo distribution of constituents or metabolites of the standardized maritime pine bark extract Pycnogenol\(^{®}\). Thirty-three patients with severe osteoarthritis scheduled for a knee arthroplasty were randomized to receive either 200 mg per day Pycnogenol\(^{®}\) (P+) or no treatment (Co) over three weeks before surgery. Serum, blood cells, and synovial fluid samples were analyzed using liquid chromatography coupled to tandem mass spectrometry with electrospray ionization (LC-ESI/MS/MS). Considerable interindividual differences were observed indicating pronounced variability of the polyphenol pharmacokinetics. Notably, the highest polyphenol concentrations were not detected in serum. Catechin and taxifolin primarily resided within the blood cells while the microbial catechin metabolite δ-(3,4-dihydroxy-phenyl)-γ-valerolactone, ferulic, and caffeic acid were mainly present in synovial fluid samples. Taxifolin was detected in serum and synovial fluid exclusively in the P+ group. Likewise, no ferulic acid was found in serum samples of the Co group. Calculating ratios of analyte distribution in individual patients revealed a simultaneous presence of some polyphenols in serum, blood cells, and/or synovial fluid only in the P+ group. This is the first evidence that polyphenols distribute into the synovial fluid of patients with osteoarthritis which supports rationalizing the results of clinical efficacy studies.}, language = {en} } @article{MusekampSchulerSeekatzetal.2017, author = {Musekamp, Gunda and Schuler, Michael and Seekatz, Bettina and Bengel, J{\"u}rgen and Faller, Hermann and Meng, Karin}, title = {Does improvement in self-management skills predict improvement in quality of life and depressive symptoms? A prospective study in patients with heart failure up to one year after self-management education}, series = {BMC Cardiovascular Disorders}, volume = {17}, journal = {BMC Cardiovascular Disorders}, number = {51}, doi = {10.1186/s12872-017-0486-5}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157501}, year = {2017}, abstract = {Background: Heart failure (HF) patient education aims to foster patients' self-management skills. These are assumed to bring about, in turn, improvements in distal outcomes such as quality of life. The purpose of this study was to test the hypothesis that change in self-reported self-management skills observed after participation in self-management education predicts changes in physical and mental quality of life and depressive symptoms up to one year thereafter. Methods: The sample comprised 342 patients with chronic heart failure, treated in inpatient rehabilitation clinics, who received a heart failure self-management education program. Latent change modelling was used to analyze relationships between both short-term (during inpatient rehabilitation) and intermediate-term (after six months) changes in self-reported self-management skills and both intermediate-term and long-term (after twelve months) changes in physical and mental quality of life and depressive symptoms. Results: Short-term changes in self-reported self-management skills predicted intermediate-term changes in mental quality of life and long-term changes in physical quality of life. Intermediate-term changes in self-reported self-management skills predicted long-term changes in all outcomes.}, language = {en} } @article{MumcuogluSiverinoTabiszetal.2017, author = {Mumcuoglu, Didem and Siverino, Claudia and Tabisz, Barbara and Kluijtmans, Bas and Nickel, Joachim}, title = {How to use BMP-2 for clinical applications? A review on pros and cons of existing delivery strategies}, series = {Journal of Translational Science}, volume = {3}, journal = {Journal of Translational Science}, number = {5}, doi = {10.15761/JTS.1000195}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158678}, year = {2017}, abstract = {No abstract available.}, language = {en} } @article{Mounga2017, author = {Mounga, Bauvarie}, title = {Strat{\´e}gies narratives et violence dans le roman post-colonial africain : le cas de la technique du fragmentaire dans Le Pleurer-rire d'Henri Lop{\`e}s}, series = {promptus - W{\"u}rzburger Beitr{\"a}ge zur Romanistik}, volume = {3}, journal = {promptus - W{\"u}rzburger Beitr{\"a}ge zur Romanistik}, issn = {2510-2613}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172916}, pages = {149-162}, year = {2017}, abstract = {After independence, in the sixties, sub-Saharan Africa including Francophone, saw moving to the head of his governments, dictatorial powers. Henri Lop{\`e}s translated this in his work by a formal violence. We will study in this paper, the violence employed by the Congolese novelist in Le Pleurer-rire (1982): the technique of fragmentary. Our work is structured in three parts: the presentation of formal violence in Le Pleurer-rire, manifestations of postcolonial political system in this novel and the operation of the technique of fragmentary.}, language = {fr} } @article{MoschallDenkErkelenzetal.2017, author = {Moschall, Rebecca and Denk, Sarah and Erkelenz, Steffen and Schenk, Christian and Schaal, Heiner and Bodem, Jochen}, title = {A purine-rich element in foamy virus pol regulates env splicing and gag/pol expression}, series = {Retrovirology}, volume = {14}, journal = {Retrovirology}, number = {10}, doi = {10.1186/s12977-017-0337-6}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157614}, year = {2017}, abstract = {Background: The foamy viral genome encodes four central purine-rich elements localized in the integrase-coding region of pol. Previously, we have shown that the first two of these RNA elements (A and B) are required for protease dimerization and activation. The D element functions as internal polypurine tract during reverse transcription. Peters et al., described the third element (C) as essential for gag expression suggesting that it might serve as an RNA export element for the unspliced genomic transcript. Results: Here, we analysed env splicing and demonstrate that the described C element composed of three GAA repeats known to bind SR proteins regulates env splicing, thus balancing the amount of gag/pol mRNAs. Deletion of the C element effectively promotes a splice site switch from a newly identified env splice acceptor to the intrinsically strong downstream localised env 3′ splice acceptor permitting complete splicing of almost all LTR derived transcripts. We provide evidence that repression of this env splice acceptor is a prerequisite for gag expression. This repression is achieved by the C element, resulting in impaired branch point recognition and SF1/mBBP binding. Separating the branch point from the overlapping purine-rich C element, by insertion of only 20 nucleotides, liberated repression and fully restored splicing to the intrinsically strong env 3′ splice site. This indicated that the cis-acting element might repress splicing by blocking the recognition of essential splice site signals. Conclusions: The foamy viral purine-rich C element regulates splicing by suppressing the branch point recognition of the strongest env splice acceptor. It is essential for the formation of unspliced gag and singly spliced pol transcripts.}, language = {en} } @article{MoremiClausVogeletal.2017, author = {Moremi, Nyambura and Claus, Heike and Vogel, Ulrich and Mshana, Stephen E.}, title = {Surveillance of surgical site infections by Pseudomonas aeruginosa and strain characterization in Tanzanian hospitals does not provide proof for a role of hospital water plumbing systems in transmission}, series = {Antimicrobial Resistance and Infection Control}, volume = {6}, journal = {Antimicrobial Resistance and Infection Control}, number = {56}, doi = {10.1186/s13756-017-0216-x}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158168}, year = {2017}, abstract = {Background The role of hospital water systems in the development of Pseudomonas aeruginosa (P. aeruginosa) surgical site infections (SSIs) in low-income countries is barely studied. This study characterized P. aeruginosa isolates from patients and water in order to establish possible epidemiological links. Methods: Between December 2014 and September 2015, rectal and wound swabs, and water samples were collected in the frame of active surveillance for SSIs in the two Tanzanian hospitals. Typing of P. aeruginosa was done by multi-locus sequence typing. Results: Of 930 enrolled patients, 536 were followed up, of whom 78 (14.6\%, 95\% CI; 11.6-17.5) developed SSIs. P. aeruginosa was found in eight (14\%) of 57 investigated wounds. Of the 43 water sampling points, 29 were positive for P. aeruginosa. However, epidemiological links to wound infections were not confirmed. The P. aeruginosa carriage rate on admission was 0.9\% (8/930). Of the 363 patients re-screened upon discharge, four (1.1\%) possibly acquired P. aeruginosa during hospitalization. Wound infections of the three of the eight P. aeruginosa SSIs were caused by a strain of the same sequence type (ST) as the one from intestinal carriage. Isolates from patients were more resistant to antibiotics than water isolates. Conclusions: The P. aeruginosa SSI rate was low. There was no evidence for transmission from tap water. Not all P. aeruginosa SSI were proven to be endogenous, pointing to other routes of transmission.}, language = {en} } @article{MoremiClausVogeletal.2017, author = {Moremi, Nyambura and Claus, Heike and Vogel, Ulrich and Mshana, Stephen E.}, title = {Faecal carriage of CTX-M extended-spectrum beta-lactamase-producing Enterobacteriaceae among street children dwelling in Mwanza city, Tanzania}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {9}, doi = {10.1371/journal.pone.0184592}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170331}, pages = {e0184592}, year = {2017}, abstract = {Background Data on ESBL carriage of healthy people including children are scarce especially in developing countries. We analyzed the prevalence and genotypes of ESBL-producing Enterobacteriaceae (EPE) in Tanzanian street children with rare contact to healthcare facilities but significant interactions with the environment, animals and other people. Methodology/ Principle findings Between April and July 2015, stool samples of 107 street children, who live in urban Mwanza were analyzed for EPE. Intestinal carriage of EPE was found in 34 (31.8\%, 95\% CI; 22.7-40.3) children. Of the 36 isolates from 34 children, 30 (83.3\%) were Escherichia coli (E. coli) and six Klebsiella pneumoniae (K. pneumoniae). Out of 36 isolates, 36 (100\%), 35 (97\%), 25 (69\%) and 16 (44\%) were resistant to tetracycline, trimethoprim-sulfamethoxazole, ciprofloxacin and gentamicin, respectively. Beta-lactamase genes and the multilocus sequence types of E. coli and K. pneumoniae were characterized. ESBL gene bla\(_{CTX-M-15}\) was detected in 75\% (27/36) of ESBL isolates. Sequence types (STs) 131, 10, 448 and 617 were the most prevalent in E. coli. Use of local herbs (OR: 3.5, 95\% CI: 1.51-8.08, P = 0.003) and spending day and night on streets (OR: 3.6, 95\% CI: 1.44-8.97, P = 0.005) were independent predictors of ESBL carriage. Conclusions/ Significance We observed a high prevalence of bla\(_{CTX-M-15}\) in EPE collected from street children in Tanzania. Detection of E. coli STs 131, 10, 38 and 648, which have been observed worldwide in animals and people, highlights the need for multidisciplinary approaches to understand the epidemiology and drivers of antimicrobial resistance in low-income countries.}, language = {en} } @article{MorbachWagnerGuentneretal.2017, author = {Morbach, Caroline and Wagner, Martin and G{\"u}ntner, Stefan and Malsch, Carolin and Oezkur, Mehmet and Wood, David and Kotseva, Kornelia and Leyh, Rainer and Ertl, Georg and Karmann, Wolfgang and Heuschmann, Peter U and St{\"o}rk, Stefan}, title = {Heart failure in patients with coronary heart disease: Prevalence, characteristics and guideline implementation - Results from the German EuroAspire IV cohort}, series = {BMC Cardiovascular Disorders}, volume = {17}, journal = {BMC Cardiovascular Disorders}, number = {108}, doi = {10.1186/s12872-017-0543-0}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157738}, year = {2017}, abstract = {Background: Adherence to pharmacotherapeutic treatment guidelines in patients with heart failure (HF) is of major prognostic importance, but thorough implementation of guidelines in routine care remains insufficient. Our aim was to investigate prevalence and characteristics of HF in patients with coronary heart disease (CHD), and to assess the adherence to current HF guidelines in patients with HF stage C, thus identifying potential targets for the optimization of guideline implementation. Methods: Patients from the German sample of the European Action on Secondary and Primary Prevention by Intervention to Reduce Events (EuroAspire) IV survey with a hospitalization for CHD within the previous six to 36 months providing valid data on echocardiography as well as on signs and symptoms of HF were categorized into stages of HF: A, prevalence of risk factors for developing HF; B, asymptomatic but with structural heart disease; C, symptomatic HF. A Guideline Adherence Indicator (GAI-3) was calculated for patients with reduced (≤40\%) left ventricular ejection fraction (HFrEF) as number of drugs taken per number of drugs indicated; beta-blockers, angiotensin converting enzyme inhibitors/angiotensin receptor blockers, and mineralocorticoid receptor antagonists (MRA) were considered. Results: 509/536 patients entered analysis. HF stage A was prevalent in n = 20 (3.9\%), stage B in n = 264 (51.9\%), and stage C in n = 225 (44.2\%) patients; 94/225 patients were diagnosed with HFrEF (42\%). Stage C patients were older, had a longer duration of CHD, and a higher prevalence of arterial hypertension. Awareness of pre-diagnosed HF was low (19\%). Overall GAI-3 of HFrEF patients was 96.4\% with a trend towards lower GAI-3 in patients with lower LVEF due to less thorough MRA prescription. Conclusions: In our sample of CHD patients, prevalence of HF stage C was high and a sizable subgroup suffered from HFrEF. Overall, pharmacotherapy was fairly well implemented in HFrEF patients, although somewhat worse in patients with more reduced ejection fraction. Two major targets were identified possibly suited to further improve the implementation of HF guidelines: 1) increase patients´ awareness of diagnosis and importance of HF; and 2) disseminate knowledge about the importance of appropriately implementing the use of mineralocorticoid receptor antagonists. Trial registration: This is a cross-sectional analysis of a non-interventional study. Therefore, it was not registered as an interventional trial.}, language = {en} } @article{MitjansBegemannJuetal.2017, author = {Mitjans, M. and Begemann, M. and Ju, A. and Dere, E. and W{\"u}stefeld, L. and Hofer, S. and Hassouna, I. and Balkenhol, J. and Oliveira, B. and Van der Auwera, S. and Tammer, R. and Hammerschmidt, K. and V{\"o}lzke, H. and Homuth, G. and Cecconi, F. and Chowdhury, K. and Grabe, H. and Frahm, J. and Boretius, S. and Dandekar, T. and Ehrenreich, H.}, title = {Sexual dimorphism of \(AMBRA1\)-related autistic features in human and mouse}, series = {Translational Psychiatry}, volume = {2017}, journal = {Translational Psychiatry}, number = {7}, doi = {10.1038/tp.2017.213}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-173782}, year = {2017}, abstract = {\(Ambra1\) is linked to autophagy and neurodevelopment. Heterozygous \(Ambra1\) deficiency induces autism-like behavior in a sexually dimorphic manner. Extraordinarily, autistic features are seen in female mice only, combined with stronger Ambra1 protein reduction in brain compared to males. However, significance of \(AMBRA1\) for autistic phenotypes in humans and, apart from behavior, for other autism-typical features, namely early brain enlargement or increased seizure propensity, has remained unexplored. Here we show in two independent human samples that a single normal \(AMBRA1\) genotype, the intronic SNP rs3802890-AA, is associated with autistic features in women, who also display lower \(AMBRA1\) mRNA expression in peripheral blood mononuclear cells relative to female GG carriers. Located within a non-coding RNA, likely relevant for mRNA and protein interaction, rs3802890 (A versus G allele) may affect its stability through modification of folding, as predicted by \(in\) \(silico\) analysis. Searching for further autism-relevant characteristics in \(Ambra1^{+/-}\) mice, we observe reduced interest of female but not male mutants regarding pheromone signals of the respective other gender in the social intellicage set-up. Moreover, altered pentylentetrazol-induced seizure propensity, an \(in\) \(vivo\) readout of neuronal excitation-inhibition dysbalance, becomes obvious exclusively in female mutants. Magnetic resonance imaging reveals mild prepubertal brain enlargement in both genders, uncoupling enhanced brain dimensions from the primarily female expression of all other autistic phenotypes investigated here. These data support a role of \(AMBRA1/Ambra1\) partial loss-of-function genotypes for female autistic traits. Moreover, they suggest \(Ambra1\) heterozygous mice as a novel multifaceted and construct-valid genetic mouse model for female autism.}, language = {en} } @article{MinGothLutzetal.2017, author = {Min, Chul-Hee and Goth, F. and Lutz, P. and Bentmann, H. and Kang, B.Y. and Cho, B.K. and Werner, J. and Chen, K.-S. and Assaad, F. and Reinert, F.}, title = {Matching DMFT calculations with photoemission spectra of heavy fermion insulators: universal properties of the near-gap spectra of SmB\(_{6}\)}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, number = {11980}, doi = {10.1038/s41598-017-12080-5}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170328}, year = {2017}, abstract = {Paramagnetic heavy fermion insulators consist of fully occupied quasiparticle bands inherent to Fermi liquid theory. The gap emergence below a characteristic temperature is the ultimate sign of coherence for a many-body system, which in addition can induce a non-trivial band topology. Here, we demonstrate a simple and efficient method to compare a model study and an experimental result for heavy fermion insulators. The temperature dependence of the gap formation in both local moment and mixed valence regimes is captured within the dynamical mean field (DMFT) approximation to the periodic Anderson model (PAM). Using the topological coherence temperature as the scaling factor and choosing the input parameter set within the mixed valence regime, we can unambiguously link the theoretical energy scales to the experimental ones. As a particularly important result, we find improved consistency between the scaled DMFT density of states and the photoemission near-gap spectra of samarium hexaboride (SmB\(_{6}\)).}, language = {en} } @article{MilanosElsharifJanzenetal.2017, author = {Milanos, Sinem and Elsharif, Shaimaa A. and Janzen, Dieter and Buettner, Andrea and Villmann, Carmen}, title = {Metabolic Products of Linalool and Modulation of GABA\(_{A}\) Receptors}, series = {Frontiers in Chemistry}, volume = {5}, journal = {Frontiers in Chemistry}, number = {46}, doi = {10.3389/fchem.2017.00046}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170779}, year = {2017}, abstract = {Terpenoids are major subcomponents in aroma substances which harbor sedative physiological potential. We have demonstrated that various monoterpenoids such as the acyclic linalool enhance GABAergic currents in an allosteric manner in vitro upon overexpression of inhibitory α1β2 GABA\(_{A}\) receptors in various expression systems. However, in plants or humans, i.e., following intake via inhalation or ingestion, linalool undergoes metabolic modifications including oxygenation and acetylation, which may affect the modulatory efficacy of the generated linalool derivatives. Here, we analyzed the modulatory potential of linalool derivatives at α1β2γ2 GABA\(_{A}\) receptors upon transient overexpression. Following receptor expression control, electrophysiological recordings in a whole cell configuration were used to determine the chloride influx upon co-application of GABA EC\(_{10-30}\) together with the modulatory substance. Our results show that only oxygenated linalool metabolites at carbon 8 positively affect GABAergic currents whereas derivatives hydroxylated or carboxylated at carbon 8 were rather ineffective. Acetylated linalool derivatives resulted in non-significant changes of GABAergic currents. We can conclude that metabolism of linalool reduces its positive allosteric potential at GABAA receptors compared to the significant potentiation effects of the parent molecule linalool itself.}, language = {en} } @article{MielichSuessWagnerMietrachetal.2017, author = {Mielich-S{\"u}ss, Benjamin and Wagner, Rabea M. and Mietrach, Nicole and Hertlein, Tobias and Marincola, Gabriella and Ohlsen, Knut and Geibel, Sebastian and Lopez, Daniel}, title = {Flotillin scaffold activity contributes to type VII secretion system assembly in Staphylococcus aureus}, series = {PLoS Pathogens}, volume = {13}, journal = {PLoS Pathogens}, number = {11}, doi = {10.1371/journal.ppat.1006728}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170035}, pages = {e1006728}, year = {2017}, abstract = {Scaffold proteins are ubiquitous chaperones that promote efficient interactions between partners of multi-enzymatic protein complexes; although they are well studied in eukaryotes, their role in prokaryotic systems is poorly understood. Bacterial membranes have functional membrane microdomains (FMM), a structure homologous to eukaryotic lipid rafts. Similar to their eukaryotic counterparts, bacterial FMM harbor a scaffold protein termed flotillin that is thought to promote interactions between proteins spatially confined to the FMM. Here we used biochemical approaches to define the scaffold activity of the flotillin homolog FloA of the human pathogen Staphylococcus aureus, using assembly of interacting protein partners of the type VII secretion system (T7SS) as a case study. Staphylococcus aureus cells that lacked FloA showed reduced T7SS function, and thus reduced secretion of T7SS-related effectors, probably due to the supporting scaffold activity of flotillin. We found that the presence of flotillin mediates intermolecular interactions of T7SS proteins. We tested several small molecules that interfere with flotillin scaffold activity, which perturbed T7SS activity in vitro and in vivo. Our results suggest that flotillin assists in the assembly of S. aureus membrane components that participate in infection and influences the infective potential of this pathogen.}, language = {en} } @article{Middelhoff2017, author = {Middelhoff, Frederike}, title = {Literary autozoographies: contextualizing species life in german animal autobiography}, series = {Humanities}, volume = {6}, journal = {Humanities}, number = {2}, publisher = {MDPI}, issn = {2076-0787}, doi = {10.3390/h6020023}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-198052}, pages = {23}, year = {2017}, abstract = {What does it mean to take animal autobiography seriously and how can we account for the representation of life-narrating animals? The article investigates animal autobiographies as 'literary autozoographies', drawing attention to both the generic contexts and the epistemological premises of these texts. Adopting a double-bind approach stemming from autobiographical research as well as cultural animal studies, the article focuses on early nineteenth-century equine autozoographies from the German-speaking tradition. These texts are discussed exemplarily in relation to the parameters of fictional autobiographies, before they are contextualized with historical discourses regarding horses in natural history and so-called 'horse-science'. Due to the fact that the poetics and aesthetics of the genre are modeled on the templates of factual autobiographies, the article argues that literary autozoographies can be read as fictional autobiographies as well as meta-auto/biographical discourse undermining autobiographical conventions. Furthermore, it shows that literary autozoography and zoology share a common historical and ideological epistemology accounting for the representation of animals in both fields. Literary autozoographies thus participate in the negotiation and production of species-specific knowledge. Reading Life of the Mecklenburg Mare Amante (1804), Life of a Job Horse (1807) and Life of a Worn-Out Hack (1819) alongside equine-centric discourses around 1800, the article demonstrates in what ways these texts can be regarded as part of a regime of knowledge attributing emotions and cognitive capacities to horses, while simultaneously arguing for humane treatment on the basis of interspecies homologies.}, language = {en} } @article{MendeLetunicHuertaCepasetal.2017, author = {Mende, Daniel R. and Letunic, Ivica and Huerta-Cepas, Jaime and Li, Simone S. and Forslund, Kristoffer and Sunagawa, Shinichi and Bork, Peer}, title = {proGenomes: a resource for consistent functional and taxonomic annotations of prokaryotic genomes}, series = {Nucleic Acids Research}, volume = {45}, journal = {Nucleic Acids Research}, number = {D1}, doi = {10.1093/nar/gkw989}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-171987}, pages = {D529-D534}, year = {2017}, abstract = {The availability of microbial genomes has opened many new avenues of research within microbiology. This has been driven primarily by comparative genomics approaches, which rely on accurate and consistent characterization of genomic sequences. It is nevertheless difficult to obtain consistent taxonomic and integrated functional annotations for defined prokaryotic clades. Thus, we developed proGenomes, a resource that provides user-friendly access to currently 25 038 high-quality genomes whose sequences and consistent annotations can be retrieved individually or by taxonomic clade. These genomes are assigned to 5306 consistent and accurate taxonomic species clusters based on previously established methodology. proGenomes also contains functional information for almost 80 million protein-coding genes, including a comprehensive set of general annotations and more focused annotations for carbohydrate-active enzymes and antibiotic resistance genes. Additionally, broad habitat information is provided for many genomes. All genomes and associated information can be downloaded by user-selected clade or multiple habitat-specific sets of representative genomes. We expect that the availability of high-quality genomes with comprehensive functional annotations will promote advances in clinical microbial genomics, functional evolution and other subfields of microbiology. proGenomes is available at http://progenomes.embl.de.}, language = {en} } @article{MemmelSisarioZoelleretal.2017, author = {Memmel, Simon and Sisario, Dmitri and Z{\"o}ller, Caren and Fiedler, Vanessa and Katzer, Astrid and Heiden, Robin and Becker, Nicholas and Eing, Lorenz and Ferreira, F{\´a}bio L.R. and Zimmermann, Heiko and Sauer, Markus and Flentje, Michael and Sukhorukov, Vladimir L. and Djuzenova, Cholpon S.}, title = {Migration pattern, actin cytoskeleton organization and response to PI3K-, mTOR-, and Hsp90-inhibition of glioblastoma cells with different invasive capacities}, series = {Oncotarget}, volume = {8}, journal = {Oncotarget}, number = {28}, doi = {10.18632/oncotarget.16847}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170719}, pages = {45298-45310}, year = {2017}, abstract = {High invasiveness and resistance to chemo- and radiotherapy of glioblastoma multiforme (GBM) make it the most lethal brain tumor. Therefore, new treatment strategies for preventing migration and invasion of GBM cells are needed. Using two different migration assays, Western blotting, conventional and super-resolution (dSTORM) fluorescence microscopy we examine the effects of the dual PI3K/mTOR-inhibitor PI-103 alone and in combination with the Hsp90 inhibitor NVP-AUY922 and/or irradiation on the migration, expression of marker proteins, focal adhesions and F-actin cytoskeleton in two GBM cell lines (DK-MG and SNB19) markedly differing in their invasive capacity. Both lines were found to be strikingly different in morphology and migration behavior. The less invasive DK-MG cells maintained a polarized morphology and migrated in a directionally persistent manner, whereas the highly invasive SNB19 cells showed a multipolar morphology and migrated randomly. Interestingly, a single dose of 2 Gy accelerated wound closure in both cell lines without affecting their migration measured by single-cell tracking. PI-103 inhibited migration of DK-MG (p53 wt, PTEN wt) but not of SNB19 (p53 mut, PTEN mut) cells probably due to aberrant reactivation of the PI3K pathway in SNB19 cells treated with PI-103. In contrast, NVP-AUY922 exerted strong anti-migratory effects in both cell lines. Inhibition of cell migration was associated with massive morphological changes and reorganization of the actin cytoskeleton. Our results showed a cell line-specific response to PI3K/mTOR inhibition in terms of GBM cell motility. We conclude that anti-migratory agents warrant further preclinical investigation as potential therapeutics for treatment of GBM.}, language = {en} } @article{MeiningerBlumSchameletal.2017, author = {Meininger, Susanne and Blum, Carina and Schamel, Martha and Barralet, Jake E. and Ignatius, Anita and Gbureck, Uwe}, title = {Phytic acid as alternative setting retarder enhanced biological performance of dicalcium phosphate cement in vitro}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, number = {558}, doi = {10.1038/s41598-017-00731-6}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-171047}, year = {2017}, abstract = {Dicalcium phosphate cement preparation requires the addition of setting retarders to meet clinical requirements regarding handling time and processability. Previous studies have focused on the influence of different setting modifiers on material properties such as mechanical performance or injectability, while ignoring their influence on biological cement properties as they are used in low concentrations in the cement pastes and the occurrence of most compounds in human tissues. Here, analyses of both material and biological behavior were carried out on samples with common setting retardants (citric acid, sodium pyrophosphate, sulfuric acid) and novel (phytic acid). Cytocompatibility was evaluated by in vitro tests with osteoblastic (hFOB 1.19) and osteoclastic (RAW 264.7) cells. We found cytocompatibility was better for sodium pyrophosphate and phytic acid with a three-fold cell metabolic activity by WST-1 test, whereas samples set with citric acid showed reduced cell number as well as cell activity. The compressive strength (CS) of cements formed with phytic acid (CS = 13 MPa) were nearly equal to those formed with citric acid (CS = 15 MPa) and approximately threefold higher than for other setting retardants. Due to a proven cytocompatibility and high mechanical strength, phytic acid seems to be a candidate replacement setting retardant for dicalcium phosphate cements.}, language = {en} } @article{MaurerHuppBischoffetal.2017, author = {Maurer, Jana and Hupp, Sabrina and Bischoff, Carolin and Foertsch, Christina and Mitchell, Timothy J. and Chakraborty, Trinad and Iliev, Asparouh I.}, title = {Distinct neurotoxicity profile of listeriolysin O from \(Listeria\) \(monocytogenes\)}, series = {Toxins}, volume = {9}, journal = {Toxins}, number = {1}, doi = {10.3390/toxins9010034}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172130}, year = {2017}, abstract = {Cholesterol-dependent cytolysins (CDCs) are protein toxins that originate from Gram-positive bacteria and contribute substantially to their pathogenicity. CDCs bind membrane cholesterol and build prepores and lytic pores. Some effects of the toxins are observed in non-lytic concentrations. Two pathogens, \(Streptococcus\) \(pneumoniae\) and \(Listeria\) \(monocytogenes\), cause fatal bacterial meningitis, and both produce toxins of the CDC family—pneumolysin and listeriolysin O, respectively. It has been demonstrated that pneumolysin produces dendritic varicosities (dendrite swellings) and dendritic spine collapse in the mouse neocortex, followed by synaptic loss and astrocyte cell shape remodeling without elevated cell death. We utilized primary glial cultures and acute mouse brain slices to examine the neuropathological effects of listeriolysin O and to compare it to pneumolysin with identical hemolytic activity. In cultures, listeriolysin O permeabilized cells slower than pneumolysin did but still initiated non-lytic astrocytic cell shape changes, just as pneumolysin did. In an acute brain slice culture system, listeriolysin O produced dendritic varicosities in an NMDA-dependent manner but failed to cause dendritic spine collapse and cortical astrocyte reorganization. Thus, listeriolysin O demonstrated slower cell permeabilization and milder glial cell remodeling ability than did pneumolysin and lacked dendritic spine collapse capacity but exhibited equivalent dendritic pathology.}, language = {en} } @article{MaierhoferFlunkertDittrichetal.2017, author = {Maierhofer, Anna and Flunkert, Julia and Dittrich, Marcus and M{\"u}ller, Tobias and Schindler, Detlev and Nanda, Indrajit and Haaf, Thomas}, title = {Analysis of global DNA methylation changes in primary human fibroblasts in the early phase following X-ray irradiation}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {5}, doi = {10.1371/journal.pone.0177442}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170895}, pages = {e0177442}, year = {2017}, abstract = {Epigenetic alterations may contribute to the generation of cancer cells in a multi-step process of tumorigenesis following irradiation of normal body cells. Primary human fibroblasts with intact cell cycle checkpoints were used as a model to test whether X-ray irradiation with 2 and 4 Gray induces direct epigenetic effects (within the first cell cycle) in the exposed cells. ELISA-based fluorometric assays were consistent with slightly reduced global DNA methylation and hydroxymethylation, however the observed between-group differences were usually not significant. Similarly, bisulfite pyrosequencing of interspersed LINE-1 repeats and centromeric α-satellite DNA did not detect significant methylation differences between irradiated and non-irradiated cultures. Methylation of interspersed ALU repeats appeared to be slightly increased (one percentage point; p = 0.01) at 6 h after irradiation with 4 Gy. Single-cell analysis showed comparable variations in repeat methylation among individual cells in both irradiated and control cultures. Radiation-induced changes in global repeat methylation, if any, were much smaller than methylation variation between different fibroblast strains. Interestingly, α-satellite DNA methylation positively correlated with gestational age. Finally, 450K methylation arrays mainly targeting genes and CpG islands were used for global DNA methylation analysis. There were no detectable methylation differences in genic (promoter, 5' UTR, first exon, gene body, 3' UTR) and intergenic regions between irradiated and control fibroblast cultures. Although we cannot exclude minor effects, i.e. on individual CpG sites, collectively our data suggest that global DNA methylation remains rather stable in irradiated normal body cells in the early phase of DNA damage response.}, language = {en} } @article{LueningschroerBinottiDombertetal.2017, author = {L{\"u}ningschr{\"o}r, Patrick and Binotti, Beyenech and Dombert, Benjamin and Heimann, Peter and Perez-Lara, Angel and Slotta, Carsten and Thau-Habermann, Nadine and von Collenberg, Cora R. and Karl, Franziska and Damme, Markus and Horowitz, Arie and Maystadt, Isabelle and F{\"u}chtbauer, Annette and F{\"u}chtbauer, Ernst-Martin and Jablonka, Sibylle and Blum, Robert and {\"U}{\c{c}}eyler, Nurcan and Petri, Susanne and Kaltschmidt, Barbara and Jahn, Reinhard and Kaltschmidt, Christian and Sendtner, Michael}, title = {Plekhg5-regulated autophagy of synaptic vesicles reveals a pathogenic mechanism in motoneuron disease}, series = {Nature Communications}, volume = {8}, journal = {Nature Communications}, number = {678}, doi = {10.1038/s41467-017-00689-z}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170048}, year = {2017}, abstract = {Autophagy-mediated degradation of synaptic components maintains synaptic homeostasis but also constitutes a mechanism of neurodegeneration. It is unclear how autophagy of synaptic vesicles and components of presynaptic active zones is regulated. Here, we show that Pleckstrin homology containing family member 5 (Plekhg5) modulates autophagy of synaptic vesicles in axon terminals of motoneurons via its function as a guanine exchange factor for Rab26, a small GTPase that specifically directs synaptic vesicles to preautophagosomal structures. Plekhg5 gene inactivation in mice results in a late-onset motoneuron disease, characterized by degeneration of axon terminals. Plekhg5-depleted cultured motoneurons show defective axon growth and impaired autophagy of synaptic vesicles, which can be rescued by constitutively active Rab26. These findings define a mechanism for regulating autophagy in neurons that specifically targets synaptic vesicles. Disruption of this mechanism may contribute to the pathophysiology of several forms of motoneuron disease.}, language = {en} } @article{LutzStroblSchuleretal.2017, author = {Lutz, Manfred B. and Strobl, Herbert and Schuler, Gerold and Romani, Nikolaus}, title = {GM-CSF monocyte-derived cells and Langerhans cells as part of the dendritic cell family}, series = {Frontiers in Immunology}, volume = {8}, journal = {Frontiers in Immunology}, number = {1388}, doi = {10.3389/fimmu.2017.01388}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158730}, year = {2017}, abstract = {Dendritic cells (DCs) and macrophages (Mph) share many characteristics as components of the innate immune system. The criteria to classify the multitude of subsets within the mononuclear phagocyte system are currently phenotype, ontogeny, transcription patterns, epigenetic adaptations, and function. More recently, ontogenetic, transcriptional, and proteomic research approaches uncovered major developmental differences between Flt3L-dependent conventional DCs as compared with Mphs and monocyte-derived DCs (MoDCs), the latter mainly generated in vitro from murine bone marrow-derived DCs (BM-DCs) or human CD14\(^{+}\) peripheral blood monocytes. Conversely, in vitro GM-CSF-dependent monocyte-derived Mphs largely resemble MoDCs whereas tissue-resident Mphs show a common embryonic origin from yolk sac and fetal liver with Langerhans cells (LCs). The novel ontogenetic findings opened discussions on the terminology of DCs versus Mphs. Here, we bring forward arguments to facilitate definitions of BM-DCs, MoDCs, and LCs. We propose a group model of terminology for all DC subsets that attempts to encompass both ontogeny and function.}, language = {en} } @article{LukešGlatzovaKvičalovaetal.2017, author = {Lukeš, Tom{\´a}š and Glatzov{\´a}, Daniela and Kv{\´i}čalov{\´a}, Zuzana and Levet, Florian and Benda, Aleš and Letschert, Sebastian and Sauer, Markus and Brdička, Tom{\´a}š and Lasser, Theo and Cebecauer, Marek}, title = {Quantifying protein densities on cell membranes using super-resolution optical fluctuation imaging}, series = {Nature Communications}, volume = {8}, journal = {Nature Communications}, doi = {10.1038/s41467-017-01857-x}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172993}, year = {2017}, abstract = {Quantitative approaches for characterizing molecular organization of cell membrane molecules under physiological and pathological conditions profit from recently developed super-resolution imaging techniques. Current tools employ statistical algorithms to determine clusters of molecules based on single-molecule localization microscopy (SMLM) data. These approaches are limited by the ability of SMLM techniques to identify and localize molecules in densely populated areas and experimental conditions of sample preparation and image acquisition. We have developed a robust, model-free, quantitative clustering analysis to determine the distribution of membrane molecules that excels in densely labeled areas and is tolerant to various experimental conditions, i.e. multiple-blinking or high blinking rates. The method is based on a TIRF microscope followed by a super-resolution optical fluctuation imaging (SOFI) analysis. The effectiveness and robustness of the method is validated using simulated and experimental data investigating nanoscale distribution of CD4 glycoprotein mutants in the plasma membrane of T cells.}, language = {en} } @article{LuekenKuhnYangetal.2017, author = {Lueken, U and Kuhn, M and Yang, Y and Straube, B and Kircher, T and Wittchen, H-U and Pfleiderer, B and Arolt, V and Wittmann, A and Str{\"o}hle, A and Weber, H and Reif, A and Domschke, K and Deckert, J and Lonsdorf, TB}, title = {Modulation of defensive reactivity by GLRB allelic variation: converging evidence from an intermediate phenotype approach}, series = {Translational Psychiatry}, volume = {7}, journal = {Translational Psychiatry}, number = {e1227}, doi = {10.1038/tp.2017.186}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-182381}, year = {2017}, abstract = {Representing a phylogenetically old and very basic mechanism of inhibitory neurotransmission, glycine receptors have been implicated in the modulation of behavioral components underlying defensive responding toward threat. As one of the first findings being confirmed by genome-wide association studies for the phenotype of panic disorder and agoraphobia, allelic variation in a gene coding for the glycine receptor beta subunit (GLRB) has recently been associated with increased neural fear network activation and enhanced acoustic startle reflexes. On the basis of two independent healthy control samples, we here aimed to further explore the functional significance of the GLRB genotype (rs7688285) by employing an intermediate phenotype approach. We focused on the phenotype of defensive system reactivity across the levels of brain function, structure, and physiology. Converging evidence across both samples was found for increased neurofunctional activation in the (anterior) insular cortex in GLRB risk allele carriers and altered fear conditioning as a function of genotype. The robustness of GLRB effects is demonstrated by consistent findings across different experimental fear conditioning paradigms and recording sites. Altogether, findings provide translational evidence for glycine neurotransmission as a modulator of the brain's evolutionary old dynamic defensive system and provide further support for a strong, biologically plausible candidate intermediate phenotype of defensive reactivity. As such, glycine-dependent neurotransmission may open up new avenues for mechanistic research on the etiopathogenesis of fear and anxiety disorders.}, language = {en} } @article{LudwigsAmann2017, author = {Ludwigs, Markus and Amann, Hannah}, title = {Klausur im Kommunalrecht: Ausschluss aus dem Gemeinderat}, series = {JURA - Juristische Ausbildung}, volume = {39}, journal = {JURA - Juristische Ausbildung}, number = {9}, issn = {1612-7021}, doi = {10.1515/jura-2017-0205}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-195589}, pages = {1106 -- 1115}, year = {2017}, abstract = {Kein Abstract verf{\"u}gbar.}, language = {de} } @article{LohseBockMaiellaroetal.2017, author = {Lohse, Christian and Bock, Andreas and Maiellaro, Isabella and Hannawacker, Annette and Schad, Lothar R. and Lohse, Martin J. and Bauer, Wolfgang R.}, title = {Experimental and mathematical analysis of cAMP nanodomains}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {4}, doi = {10.1371/journal.pone.0174856}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170972}, pages = {e0174856}, year = {2017}, abstract = {In their role as second messengers, cyclic nucleotides such as cAMP have a variety of intracellular effects. These complex tasks demand a highly organized orchestration of spatially and temporally confined cAMP action which should be best achieved by compartmentalization of the latter. A great body of evidence suggests that cAMP compartments may be established and maintained by cAMP degrading enzymes, e.g. phosphodiesterases (PDEs). However, the molecular and biophysical details of how PDEs can orchestrate cAMP gradients are entirely unclear. In this paper, using fusion proteins of cAMP FRET-sensors and PDEs in living cells, we provide direct experimental evidence that the cAMP concentration in the vicinity of an individual PDE molecule is below the detection limit of our FRET sensors (<100nM). This cAMP gradient persists in crude cytosol preparations. We developed mathematical models based on diffusion-reaction equations which describe the creation of nanocompartments around a single PDE molecule and more complex spatial PDE arrangements. The analytically solvable equations derived here explicitly determine how the capability of a single PDE, or PDE complexes, to create a nanocompartment depend on the cAMP degradation rate, the diffusive mobility of cAMP, and geometrical and topological parameters. We apply these generic models to our experimental data and determine the diffusive mobility and degradation rate of cAMP. The results obtained for these parameters differ by far from data in literature for free soluble cAMP interacting with PDE. Hence, restricted cAMP diffusion in the vincinity of PDE is necessary to create cAMP nanocompartments in cells.}, language = {en} } @article{LiuChenGaoetal.2017, author = {Liu, Han and Chen, Chunhai and Gao, Zexia and Min, Jiumeng and Gu, Yongming and Jian, Jianbo and Jiang, Xiewu and Cai, Huimin and Ebersberger, Ingo and Xu, Meng and Zhang, Xinhui and Chen, Jianwei and Luo, Wei and Chen, Boxiang and Chen, Junhui and Liu, Hong and Li, Jiang and Lai, Ruifang and Bai, Mingzhou and Wei, Jin and Yi, Shaokui and Wang, Huanling and Cao, Xiaojuan and Zhou, Xiaoyun and Zhao, Yuhua and Wei, Kaijian and Yang, Ruibin and Liu, Bingnan and Zhao, Shancen and Fang, Xiaodong and Schartl, Manfred and Qian, Xueqiao and Wang, Weimin}, title = {The draft genome of blunt snout bream (Megalobrama amblycephala) reveals the development of intermuscular bone and adaptation to herbivorous diet}, series = {GigaScience}, volume = {6}, journal = {GigaScience}, number = {7}, doi = {10.1093/gigascience/gix039}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170844}, year = {2017}, abstract = {The blunt snout bream Megalobrama amblycephala is the economically most important cyprinid fish species. As an herbivore, it can be grown by eco-friendly and resource-conserving aquaculture. However, the large number of intermuscular bones in the trunk musculature is adverse to fish meat processing and consumption. As a first towards optimizing this aquatic livestock, we present a 1.116-Gb draft genome of M. amblycephala, with 779.54 Mb anchored on 24 linkage groups. Integrating spatiotemporal transcriptome analyses, we show that intermuscular bone is formed in the more basal teleosts by intramembranous ossification and may be involved in muscle contractibility and coordinating cellular events. Comparative analysis revealed that olfactory receptor genes, especially of the beta type, underwent an extensive expansion in herbivorous cyprinids, whereas the gene for the umami receptor T1R1 was specifically lost in M. amblycephala. The composition of gut microflora, which contributes to the herbivorous adaptation of M. amblycephala, was found to be similar to that of other herbivores. As a valuable resource for the improvement of M. amblycephala livestock, the draft genome sequence offers new insights into the development of intermuscular bone and herbivorous adaptation.}, language = {en} } @article{LischkeHerpertzBergeretal.2017, author = {Lischke, Alexander and Herpertz, Sabine C. and Berger, Christoph and Domes, Gregor and Gamer, Matthias}, title = {Divergent effects of oxytocin on (para-)limbic reactivity to emotional and neutral scenes in females with and without borderline personality disorder}, series = {Social Cognitive and Affective Neuroscience}, volume = {12}, journal = {Social Cognitive and Affective Neuroscience}, number = {11}, doi = {10.1093/scan/nsx107}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-173309}, pages = {1783-1792}, year = {2017}, abstract = {Borderline personality disorder (BPD) patients' hypersensitivity for emotionally relevant stimuli has been suggested be due to abnormal activity and connectivity in (para-)limbic and prefrontal brain regions during stimulus processing. The neuropeptide oxytocin has been shown to modulate activity and functional connectivity in these brain regions, thereby optimizing the processing of emotional and neutral stimuli. To investigate whether oxytocin would be capable of attenuating BPD patients' hypersensitivity for such stimuli, we recorded brain activity and gaze behavior during the processing of complex scenes in 51 females with and 48 without BPD after intranasal application of either oxytocin or placebo. We found divergent effects of oxytocin on BPD and healthy control (HC) participants' (para-)limbic reactivity to emotional and neutral scenes: Oxytocin decreased amygdala and insula reactivity in BPD participants but increased it in HC participants, indicating an oxytocin-induced normalization of amygdala and insula activity during scene processing. In addition, oxytocin normalized the abnormal coupling between amygdala activity and gaze behavior across all scenes in BPD participants. Overall, these findings suggest that oxytocin may be capable of attenuating BPD patients' hypersensitivity for complex scenes, irrespective of their valence.}, language = {en} } @article{LindertPozzoriniBoughezaletal.2017, author = {Lindert, J. M. and Pozzorini, S. and Boughezal, R. and Campbell, J. M. and Denner, A. and Dittmaier, S. and Gehrmann-De Ridder, A. and Gehrmann, T. and Glover, N. and Huss, A. and Kallweit, S. and Maierh{\"o}fer, P. and Mangano, M. L. and Morgan, T. A. and M{\"u}ck, A. and Petriello, F. and Salam, G. P. and Sch{\"o}nherr, M. and Williams, C.}, title = {Precise predictions for \(V+\)jets dark matter backgrounds}, series = {European Physical Journal C}, volume = {77}, journal = {European Physical Journal C}, doi = {10.1140/epjc/s10052-017-5389-1}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172555}, year = {2017}, abstract = {High-energy jets recoiling against missing transverse energy (MET) are powerful probes of dark matter at the LHC. Searches based on large MET signatures require a precise control of the \({Z(ν\overline{ν})}+\) jet background in the signal region. This can be achieved by taking accurate data in control regions dominated by \(Z(ℓ^+ℓ^-)+\) jet, \(W(ℓν)+\) jet and \(γ+\) jet production, and extrapolating to the \({Z(ν\overline{ν})}+\) jet background by means of precise theoretical predictions. In this context, recent advances in perturbative calculations open the door to significant sensitivity improvements in dark matter searches. In this spirit, we present a combination of state-of-the-art calculations for all relevant \(V+\) jets processes, including throughout NNLO QCD corrections and NLO electroweak corrections supplemented by Sudakov logarithms at two loops. Predictions at parton level are provided together with detailed recommendations for their usage in experimental analyses based on the reweighting of Monte Carlo samples. Particular attention is devoted to the estimate of theoretical uncertainties in the framework of dark matter searches, where subtle aspects such as correlations across different \(V+\) jet processes play a key role. The anticipated theoretical uncertainty in the \({Z(ν\overline{ν})}+\) jet background is at the few percent level up to the TeV range.}, language = {en} } @article{LillaFuellgrafStetteretal.2017, author = {Lilla, Nadine and F{\"u}llgraf, Hannah and Stetter, Christian and K{\"o}hler, Stefan and Ernestus, Ralf-Ingo and Westermaier, Thomas}, title = {First Description of Reduced Pyruvate Dehydrogenase Enzyme Activity Following Subarachnoid Hemorrhage (SAH)}, series = {Frontiers in Neuroscience}, volume = {11}, journal = {Frontiers in Neuroscience}, number = {37}, doi = {10.3389/fnins.2017.00037}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157636}, year = {2017}, abstract = {Object: Several previous studies reported metabolic derangements and an accumulation of metabolic products in the early phase of experimental subarachnoid hemorrhage (SAH), which may contribute to secondary brain damage. This may be a result of deranged oxygen utilization due to enzymatic dysfunction in aerobic glucose metabolism. This study was performed to investigate, if pyruvate dehydrogenase enzyme (PDH) is affected in its activity giving further hints for a derangement of oxidative metabolism. Methods: Eighteen male Sprague-Dawley rats were randomly assigned to one of two experimental groups (n = 9): (1) SAH induced by the endovascular filament model and (2) sham-operated controls. Mean arterial blood pressure (MABP), intracranial pressure (ICP), and local cerebral blood flow (LCBF; laser-Doppler flowmetry) were continuously monitored from 30 min before until 3 h after SAH. Thereafter, the animals were sacrificed and PDH activity was measured by ELISA. Results: PDH activity was significantly reduced in animals subjected to SAH compared to controls. Conclusion: The results of this study demonstrate for the first time a reduction of PDH activity following SAH, independent of supply of substrates and may be an independent factor contributing to a derangement of oxidative metabolism, failure of oxygen utilization, and secondary brain damage.}, language = {en} } @article{LeopoldZeilbeckWeberetal.2017, author = {Leopold, Stephanie A. and Zeilbeck, Ludwig F. and Weber, Gregor and Seitz, Roswitha and B{\"o}sl, Michael R. and J{\"a}gle, Herbert and Fuchshofer, Rudolf and Tamm, Ernst R. and Ohlmann, Andreas}, title = {Norrin protects optic nerve axons from degeneration in a mouse model of glaucoma}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, doi = {10.1038/s41598-017-14423-8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-173494}, year = {2017}, abstract = {Norrin is a secreted signaling molecule activating the Wnt/β-catenin pathway. Since Norrin protects retinal neurons from experimental acute injury, we were interested to learn if Norrin attenuates chronic damage of retinal ganglion cells (RGC) and their axons in a mouse model of glaucoma. Transgenic mice overexpressing Norrin in the retina (Pax6-Norrin) were generated and crossed with DBA/2J mice with hereditary glaucoma and optic nerve axonal degeneration. One-year old DBA/2J/Pax6-Norrin animals had significantly more surviving optic nerve axons than their DBA/2J littermates. The protective effect correlated with an increase in insulin-like growth factor (IGF)-1 mRNA and an enhanced Akt phosphorylation in DBA/2J/Pax6-Norrin mice. Both mouse strains developed an increase in intraocular pressure during the second half of the first year and marked degenerative changes in chamber angle, ciliary body and iris structure. The degenerations were slightly attenuated in the chamber angle of DBA/2J/Pax6-Norrin mice, which showed a β-catenin increase in the trabecular meshwork. We conclude that high levels of Norrin and the subsequent constitutive activation of Wnt/β-catenin signaling in RGC protect from glaucomatous axonal damage via IGF-1 causing increased activity of PI3K-Akt signaling. Our results identify components of a protective signaling network preventing degeneration of optic nerve axons in glaucoma.}, language = {en} } @article{LavyshSokolovaSlashchevaetal.2017, author = {Lavysh, Daria and Sokolova, Maria and Slashcheva, Marina and F{\"o}rstner, Konrad U. and Severinov, Konstantin}, title = {Transcription profiling of "bacillus subtilis" cells infected with AR9, a giant phage encoding two multisubunit RNA polymerases}, series = {mBio}, volume = {8}, journal = {mBio}, number = {1}, doi = {10.1128/mBio.02041-16}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-181810}, year = {2017}, abstract = {Bacteriophage AR9 is a recently sequenced jumbo phage that encodes two multisubunit RNA polymerases. Here we investigated the AR9 transcription strategy and the effect of AR9 infection on the transcription of its host, Bacillus subtilis. Analysis of whole-genome transcription revealed early, late, and continuously expressed AR9 genes. Alignment of sequences upstream of the 5′ ends of AR9 transcripts revealed consensus sequences that define early and late phage promoters. Continuously expressed AR9 genes have both early and late promoters in front of them. Early AR9 transcription is independent of protein synthesis and must be determined by virion RNA polymerase injected together with viral DNA. During infection, the overall amount of host mRNAs is significantly decreased. Analysis of relative amounts of host transcripts revealed notable differences in the levels of some mRNAs. The physiological significance of up- or downregulation of host genes for AR9 phage infection remains to be established. AR9 infection is significantly affected by rifampin, an inhibitor of host RNA polymerase transcription. The effect is likely caused by the antibiotic-induced killing of host cells, while phage genome transcription is solely performed by viral RNA polymerases.}, language = {en} } @article{LapaSchrederSchirbeletal.2017, author = {Lapa, Constantin and Schreder, Martin and Schirbel, Andreas and Samnick, Samuel and Kort{\"u}m, Klaus Martin and Herrmann, Ken and Kropf, Saskia and Einsele, Herrmann and Buck, Andreas K. and Wester, Hans-J{\"u}rgen and Knop, Stefan and L{\"u}ckerath, Katharina}, title = {[\(^{68}\)Ga]Pentixafor-PET/CT for imaging of chemokine receptor CXCR4 expression in multiple myeloma - comparison to [\(^{18}\)F]FDG and laboratory values}, series = {Theranostics}, volume = {7}, journal = {Theranostics}, number = {1}, doi = {10.7150/thno.16576}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172106}, pages = {205-212}, year = {2017}, abstract = {Chemokine (C-X-C motif) receptor 4 (CXCR4) is a key factor for tumor growth and metastasis in several types of human cancer including multiple myeloma (MM). Proof-of-concept of CXCR4-directed radionuclide therapy in MM has recently been reported. This study assessed the diagnostic performance of the CXCR4-directed radiotracer [\(^{68}\)Ga]Pentixafor in MM and a potential role for stratifying patients to CXCR4-directed therapies. Thirty-five patients with MM underwent [\(^{68}\)Ga]Pentixafor-PET/CT for evaluation of eligibility for endoradiotherapy. In 19/35 cases, [\(^{18}\)F]FDG-PET/CT for correlation was available. Scans were compared on a patient and on a lesion basis. Tracer uptake was correlated with standard clinical parameters of disease activity. [\(^{68}\)Ga]Pentixafor-PET detected CXCR4-positive disease in 23/35 subjects (66\%). CXCR4-positivity at PET was independent from myeloma subtypes, cytogenetics or any serological parameters and turned out as a negative prognostic factor. In the 19 patients in whom a comparison to [\(^{18}\)F]FDG was available, [\(^{68}\)Ga]Pentixafor-PET detected more lesions in 4/19 (21\%) subjects, [\(^{18}\)F]FDG proved superior in 7/19 (37\%). In the remaining 8/19 (42\%) patients, both tracers detected an equal number of lesions. [\(^{18}\)F]FDG-PET positivity correlated with [\(^{68}\)Ga]Pentixafor-PET positivity (p=0.018). [\(^{68}\)Ga]Pentixafor-PET provides further evidence that CXCR4 expression frequently occurs in advanced multiple myeloma, representing a negative prognostic factor and a potential target for myeloma specific treatment. However, selecting patients for CXCR4 directed therapies and prognostic stratification seem to be more relevant clinical applications for this novel imaging modality, rather than diagnostic imaging of myeloma.}, language = {en} } @article{LapaKircherSchirbeletal.2017, author = {Lapa, Constantin and Kircher, Stefan and Schirbel, Andreas and Rosenwald, Andreas and Kropf, Saskia and Pelzer, Theo and Walles, Thorsten and Buck, Andreas K. and Weber, Wolfgang A. and Wester, Hans-Juergen and Herrmann, Ken and L{\"u}ckerath, Katharina}, title = {Targeting CXCR4 with [\(^{68}\)Ga]Pentixafor: a suitable theranostic approach in pleural mesothelioma?}, series = {Oncotarget}, volume = {8}, journal = {Oncotarget}, number = {57}, doi = {10.18632/oncotarget.18235}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-169989}, pages = {96732-96737}, year = {2017}, abstract = {C-X-C motif chemokine receptor 4 (CXCR4) is a key factor for tumor growth and metastasis in several types of human cancer. This study investigated the feasibility of CXCR4-directed imaging with positron emission tomography/computed tomography (PET/CT) using [\(^{68}\)Ga]Pentixafor in malignant pleural mesothelioma. Six patients with pleural mesothelioma underwent [\(^{68}\)Ga]Pentixafor-PET/CT. 2′-[\(^{18}\)F]fluoro-2′-deoxy-D-glucose ([\(^{18}\)F]FDG)-PET/CT (4/6 patients) and immunohistochemistry obtained from biopsy or surgery (all) served as standards of reference. Additionally, 9 surgical mesothelioma samples were available for histological work-up. Whereas [\(^{18}\)F]FDG-PET depicted active lesions in all patients, [\(^{68}\)Ga]Pentixafor-PET/CT recorded physiologic tracer distribution and none of the 6 patients presented [\(^{68}\)Ga]Pentixafor-positive lesions. This finding paralleled results of immunohistochemistry which also could not identify relevant CXCR4 surface expression in the samples analyzed. In contrast to past reports, our data suggest widely absence of CXCR4 expression in pleural mesothelioma. Hence, robust cell surface expression should be confirmed prior to targeting this chemokine receptor for diagnosis and/or therapy.}, language = {en} } @article{LapaHerrmannSchirbeletal.2017, author = {Lapa, Constantin and Herrmann, Ken and Schirbel, Andreas and H{\"a}nscheid, Heribert and L{\"u}ckerath, Katharina and Schottelius, Margret and Kircher, Malte and Werner, Rudolf A. and Schreder, Martin and Samnick, Samuel and Kropf, Saskia and Knop, Stefan and Buck, Andreas K. and Einsele, Hermann and Wester, Hans-Juergen and Kort{\"u}m, K. Martin}, title = {CXCR4-directed endoradiotherapy induces high response rates in extramedullary relapsed multiple myeloma}, series = {Theranostics}, volume = {7}, journal = {Theranostics}, number = {6}, doi = {10.7150/thno.19050}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172095}, pages = {1589-1597}, year = {2017}, abstract = {C-X-C-motif chemokine receptor 4 (CXCR4) is a key factor for tumor growth and metastasis in several types of human cancer. We have recently reported promising first-in-man experience with CXCR4-directed endoradiotherapy (ERT) in multiple myeloma (MM). Eight heavily pretreated MM patients underwent a total of 10 ERT cycles (7 patients with 1 cycle and a single patient with 3 cycles). ERT was administered in combination with chemotherapy and autologous stem cell support. End points were occurrence and timing of adverse events, progression-free and overall survival. ERT was overall well tolerated without any unexpected acute adverse events or changes in vital signs. With absorbed tumor doses >30-70 Gy in intra- or extramedullary lesions, significant anti-myeloma activity was observed with 1 patient achieving complete remission and 5/8 partial remission. Directly after ERT major infectious complications were seen in one patient who died from sepsis 22 days after ERT, another patient with high tumor burden experienced lethal tumor lysis syndrome. Median progression-free survival was 54 days (range, 13-175), median overall survival was 223 days (range, 13-313). During follow-up (6 patients available), one patient died from infectious complications, 2/8 from disease progression, the remaining 3/8 patients are still alive. CXCR4-directed ERT was well-tolerated and exerted anti-myeloma activity even at very advanced stage MM with presence of extramedullary disease. Further assessment of this novel treatment option is highly warranted.}, language = {en} } @article{LapaGarciaVellosoLueckerathetal.2017, author = {Lapa, Constantin and Garcia-Velloso, Maria J. and L{\"u}ckerath, Katharina and Samnick, Samuel and Schreder, Martin and Otero, Paula Rodriguez and Schmid, Jan-Stefan and Herrmann, Ken and Knop, Stefan and Buck, Andreas K. and Einsele, Hermann and San-Miguel, Jesus and Kort{\"u}m, Klaus Martin}, title = {\(^{11}\)C-methionine-PET in multiple myeloma: a combined study from two different institutions}, series = {Theranostics}, volume = {7}, journal = {Theranostics}, number = {11}, doi = {10.7150/thno.20491}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172038}, pages = {2956-2964}, year = {2017}, abstract = {\(^{11}\)C-methionine (MET) has recently emerged as an accurate marker of tumor burden and disease activity in patients with multiple myeloma (MM). This dual-center study aimed at further corroboration of the superiority of MET as positron emission tomography (PET) tracer for staging and re-staging MM, as compared to \(^{18}\)F-2`-deoxy-2`-fluoro-D-glucose (FDG). 78 patients with a history of solitary plasmacytoma (n=4), smoldering MM (SMM, n=5), and symptomatic MM (n=69) underwent both MET- and FDG-PET/computed tomography (CT) at the University Centers of W{\"u}rzburg, Germany and Navarra, Spain. Scans were compared on a patient and on a lesion basis. Inter-reader agreement was also evaluated. In 2 patients, tumor biopsies for verification of discordant imaging results were available. MET-PET detected focal lesions (FL) in 59/78 subjects (75.6\%), whereas FDG-PET/CT showed lesions in only 47 patients (60.3\%; p<0.01), accordingly disease activity would have been missed in 12 patients. Directed biopsies of discordant results confirmed MET-PET/CT results in both cases. MET depicted more FL in 44 patients (56.4\%; p<0.01), whereas in two patients (2/78), FDG proved superior. In the remainder (41.0\%, 32/78), both tracers yielded comparable results. Inter-reader agreement for MET was higher than for FDG (κ = 0.82 vs κ = 0.72). This study demonstrates higher sensitivity of MET in comparison to standard FDG to detect intra- and extramedullary MM including histologic evidence of FDG-negative, viable disease exclusively detectable by MET-PET/CT. MET holds the potential to replace FDG as functional imaging standard for staging and re-staging of MM.}, language = {en} } @article{LapaAriasLozaHayakawaetal.2017, author = {Lapa, Constantin and Arias-Loza, Paula and Hayakawa, Nobuyuki and Wakabayashi, Hiroshi and Werner, Rudolf A. and Chen, Xinyu and Shinaji, Tetsuya and Herrmann, Ken and Pelzer, Theo and Higuchi, Takahiro}, title = {Whitening and impaired glucose utilization of brown adipose tissue in a rat model of type 2 diabetes mellitus}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, doi = {10.1038/s41598-017-17148-w}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159066}, pages = {16795}, year = {2017}, abstract = {Brown adipose tissue (BAT) is an attractive therapeutic target to combat diabetes and obesity due to its ability to increase glucose expenditure. In a genetic rat model (ZDF fa/fa) of type-2 diabetes and obesity, we aimed to investigate glucose utilization of BAT by \(^{18}\)F-FDG PET imaging. Male Zucker diabetic fatty (ZDF) and Male Zucker lean (ZL) control rats were studied at 13 weeks. Three weeks prior to imaging, ZDF rats were randomized into a no-restriction (ZDF-ND) and a mild calorie restriction (ZDF-CR) group. Dynamic \(^{18}\)F-FDG PET using a dedicated small animal PET system was performed under hyperinsulinemic-euglycemic clamp. \(^{18}\)F-FDG PET identified intense inter-scapular BAT glucose uptake in all ZL control rats, while no focally increased \(^{18}\)F-FDG uptake was detected in all ZDF-ND rats. Mild but significant improved BAT tracer uptake was identified after calorie restriction in diabetic rats (ZDF-CR). The weight of BAT tissue and fat deposits were significantly increased in ZDF-CR and ZDF-ND rats as compared to ZL controls, while UCP-1 and mitochondrial concentrations were significantly decreased. Whitening and severely impaired insulin-stimulated glucose uptake in BAT was confirmed in a rat model of type-2 diabetes. Additionally, calorie restriction partially restored the impaired BAT glucose uptake.}, language = {en} } @article{LandmannHennigIgnat'evetal.2017, author = {Landmann, Johannes and Hennig, Philipp T. and Ignat'ev, Nikolai V. and Finze, Maik}, title = {Borylation of fluorinated arenes using the boron centred nucleophile B(CN)\(_{3}\)\(^{2-}\) - a unique entry to aryltricyanoborates}, series = {Chemical Science}, volume = {8}, journal = {Chemical Science}, number = {9}, doi = {10.1039/c7sc02249b}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170417}, pages = {5962-5968}, year = {2017}, abstract = {The potassium salt of the boron-centred nucleophile B(CN)\(_{3}\)\(^{2-}\)(1) readily reacts with perfluorinated arenes, such as hexafluorobenzene, decafluorobiphenyl, octafluoronaphthalene and pentafluoropyridine, which results in KF and the K\(^{+}\) salts of the respective borate anions with one {B(CN)\(_{3}\)} unit bonded to the (hetero)arene. An excess of K\(_{2}\)1 leads to the successive reaction of two or, in the case of perfluoropyridine, even three C-F moieties and the formation of di- and trianions, respectively. Moreover, all of the 11 partially fluorinated benzene derivatives, C\(_{6}\)F\(_{6-n}\)H\(_{n}\) (n = 1-5), generally react with K\(_{2}\)1 to give new tricyano(phenyl)borate anions with high chemo- and regioselectivity. A decreasing number of fluorine substituents on benzene results in a decrease in the reaction rate. In the cases of partially fluorinated benzenes, the addition of LiCl is advantageous or even necessary to facilitate the reaction. Also, pentafluorobenzenes R-C\(_{6}\)F\(_{5}\) (R = -CN, -OMe, -Me, or -CF\(_{3}\)) react via C-F/C-B exchange that mostly occurs in the para position and to a lesser extent in the meta or ortho positions. Most of the reactions proceed via an S\(_{N}\)Ar mechanism. The reaction of 1,4-F\(_{2}\)C\(_{6}\)H\(_{4}\) with K\(_{2}\)1 shows that an aryne mechanism has to be considered in some cases as well. In summary, a wealth of new stable tricyano(aryl)borates have been synthesised and fully characterized using multi-NMR spectroscopy and most of them were characterised using single-crystal X-ray diffraction.}, language = {en} } @article{LamazeOeztuerkColakFischeretal.2017, author = {Lamaze, Angelique and {\"O}zt{\"u}rk-{\c{C}}olak, Arzu and Fischer, Robin and Peschel, Nicolai and Koh, Kyunghee and Jepson, James E. C.}, title = {Regulation of sleep plasticity by a thermo-sensitive circuit in Drosophila}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, doi = {10.1038/srep40304}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-181146}, pages = {12}, year = {2017}, abstract = {Sleep is a highly conserved and essential behaviour in many species, including the fruit fly Drosophila melanogaster. In the wild, sensory signalling encoding environmental information must be integrated with sleep drive to ensure that sleep is not initiated during detrimental conditions. However, the molecular and circuit mechanisms by which sleep timing is modulated by the environment are unclear. Here we introduce a novel behavioural paradigm to study this issue. We show that in male fruit flies, onset of the daytime siesta is delayed by ambient temperatures above 29°C. We term this effect Prolonged Morning Wakefulness (PMW). We show that signalling through the TrpA1 thermo-sensor is required for PMW, and that TrpA1 specifically impacts siesta onset, but not night sleep onset, in response to elevated temperatures. We identify two critical TrpA1-expressing circuits and show that both contact DN1p clock neurons, the output of which is also required for PMW. Finally, we identify the circadian blue-light photoreceptor CRYPTOCHROME as a molecular regulator of PMW, and propose a model in which the Drosophila nervous system integrates information encoding temperature, light, and time to dynamically control when sleep is initiated. Our results provide a platform to investigate how environmental inputs co-ordinately regulate sleep plasticity.}, language = {en} } @article{LaglerElMeseryKuebleretal.2017, author = {Lagler, Charlotte and El-Mesery, Mohamed and K{\"u}bler, Alexander Christian and M{\"u}ller-Richter, Urs Dietmar Achim and St{\"u}hmer, Thorsten and Nickel, Joachim and M{\"u}ller, Thomas Dieter and Wajant, Harald and Seher, Axel}, title = {The anti-myeloma activity of bone morphogenetic protein 2 predominantly relies on the induction of growth arrest and is apoptosis-independent}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {10}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158993}, pages = {e0185720}, year = {2017}, abstract = {Multiple myeloma (MM), a malignancy of the bone marrow, is characterized by a pathological increase in antibody-producing plasma cells and an increase in immunoglobulins (plasmacytosis). In recent years, bone morphogenetic proteins (BMPs) have been reported to be activators of apoptotic cell death in neoplastic B cells in MM. Here, we use bone morphogenetic protein 2 (BMP2) to show that the "apoptotic" effect of BMPs on human neoplastic B cells is dominated by anti-proliferative activities and cell cycle arrest and is apoptosis-independent. The anti-proliferative effect of BMP2 was analysed in the human cell lines KMS12-BM and L363 using WST-1 and a Coulter counter and was confirmed using CytoTox assays with established inhibitors of programmed cell death (zVAD-fmk and necrostatin-1). Furthermore, apoptotic activity was compared in both cell lines employing western blot analysis for caspase 3 and 8 in cells treated with BMP2 and FasL. Additionally, expression profiles of marker genes of different cell death pathways were analysed in both cell lines after stimulation with BMP2 for 48h using an RT-PCR-based array. In our experiments we observed that there was rather no reduction in absolute cell number, but cells stopped proliferating following treatment with BMP2 instead. The time frame (48-72 h) after BMP2 treatment at which a reduction in cell number is detectable is too long to indicate a directly BMP2-triggered apoptosis. Moreover, in comparison to robust apoptosis induced by the approved apoptotic factor FasL, BMP2 only marginally induced cell death. Consistently, neither the known inhibitor of apoptotic cell death zVAD-fmk nor the necroptosis inhibitor necrostatin-1 was able to rescue myeloma cell growth in the presence of BMP2.}, language = {en} } @article{KoepingShehataDielerCebullaetal.2017, author = {K{\"o}ping, Maria and Shehata-Dieler, Wafaa and Cebulla, Mario and Rak, Kristen and Oder, Daniel and M{\"u}ntze, Jonas and Nordbeck, Peter and Wanner, Christoph and Hagen, Rudolf and Schraven, Sebastian}, title = {Cardiac and renal dysfunction is associated with progressive hearing loss in patients with Fabry disease}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {11}, doi = {10.1371/journal.pone.0188103}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-169961}, pages = {e0188103}, year = {2017}, abstract = {Background Fabry disease (FD) is an X-linked recessive hereditary lysosomal storage disorder which results in the accumulation of globotriaosylceramid (Gb3) in tissues of kidney and heart as well as central and peripheral nervous system. Besides prominent renal and cardiac organ involvement, cochlear symptoms like high-frequency hearing loss and tinnitus are frequently found with yet no comprehensive data available in the literature. Objective To examine hearing loss in patients with FD depending on cardiac and renal function. Material and methods Single-center study with 68 FD patients enrolled between 2012 and 2016 at the Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery of the University of W{\"u}rzburg. Every subject underwent an oto-rhino-laryngological examination as well as behavioral, electrophysiological and electroacoustical audiological testing. High-frequency thresholds were evaluated by using a modified PTA\(_{6}\) (0.5, 1, 2, 4, 6, 8) and HF-PTA (6, 8 kHz). Renal function was measured by eGFR, cardiac impairment was graduated by NYHA class. Results Sensorineural hearing loss was detected in 58.8\% of the cohort, which occurred typically in sudden episodes and affected especially high frequencies. Hearing loss is asymmetric, beginning unilaterally and affecting the contralateral ear later. Tinnitus was reported by 41.2\%. Renal and cardiac impairment influenced the severity of hearing loss (p < 0.05). Conclusions High frequency hearing loss is a common problem in patients with FD. Although not life-threatening, it can seriously reduce quality of life and should be taken into account in diagnosis and therapy. Optimized extensive hearing assessment including higher frequency thresholds should be used.}, language = {en} } @article{KaethnerHalderHintermuelleretal.2017, author = {K{\"a}thner, Ivo and Halder, Sebastian and Hinterm{\"u}ller, Christoph and Espinosa, Arnau and Guger, Christoph and Miralles, Felip and Vargiu, Eloisa and Dauwalder, Stefan and Rafael-Palou, Xavier and Sol{\`a}, Marc and Daly, Jean M. and Armstrong, Elaine and Martin, Suzanne and K{\"u}bler, Andrea}, title = {A Multifunctional Brain-Computer Interface Intended for Home Use: An Evaluation with Healthy Participants and Potential End Users with Dry and Gel-Based Electrodes}, series = {Frontiers in Neuroscience}, volume = {11}, journal = {Frontiers in Neuroscience}, number = {286}, doi = {10.3389/fnins.2017.00286}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157925}, year = {2017}, abstract = {Current brain-computer interface (BCIs) software is often tailored to the needs of scientists and technicians and therefore complex to allow for versatile use. To facilitate home use of BCIs a multifunctional P300 BCI with a graphical user interface intended for non-expert set-up and control was designed and implemented. The system includes applications for spelling, web access, entertainment, artistic expression and environmental control. In addition to new software, it also includes new hardware for the recording of electroencephalogram (EEG) signals. The EEG system consists of a small and wireless amplifier attached to a cap that can be equipped with gel-based or dry contact electrodes. The system was systematically evaluated with a healthy sample, and targeted end users of BCI technology, i.e., people with a varying degree of motor impairment tested the BCI in a series of individual case studies. Usability was assessed in terms of effectiveness, efficiency and satisfaction. Feedback of users was gathered with structured questionnaires. Two groups of healthy participants completed an experimental protocol with the gel-based and the dry contact electrodes (N = 10 each). The results demonstrated that all healthy participants gained control over the system and achieved satisfactory to high accuracies with both gel-based and dry electrodes (average error rates of 6 and 13\%). Average satisfaction ratings were high, but certain aspects of the system such as the wearing comfort of the dry electrodes and design of the cap, and speed (in both groups) were criticized by some participants. Six potential end users tested the system during supervised sessions. The achieved accuracies varied greatly from no control to high control with accuracies comparable to that of healthy volunteers. Satisfaction ratings of the two end-users that gained control of the system were lower as compared to healthy participants. The advantages and disadvantages of the BCI and its applications are discussed and suggestions are presented for improvements to pave the way for user friendly BCIs intended to be used as assistive technology by persons with severe paralysis.}, language = {en} } @article{KuznetsovAlmuzzainiKritikouetal.2017, author = {Kuznetsov, Nikolai V. and Almuzzaini, Bader and Kritikou, Joanna S. and Baptista, Marisa A. P. and Oliveira, Mariana M. S. and Keszei, Marton and Snapper, Scott B. and Percipalle, Piergiorgio and Westerberg, Lisa S.}, title = {Nuclear Wiskott-Aldrich syndrome protein co-regulates T cell factor 1-mediated transcription in T cells}, series = {Genome Medicine}, volume = {9}, journal = {Genome Medicine}, doi = {10.1186/s13073-017-0481-6}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-173486}, year = {2017}, abstract = {Background The Wiskott-Aldrich syndrome protein (WASp) family of actin-nucleating factors are present in the cytoplasm and in the nucleus. The role of nuclear WASp for T cell development remains incompletely defined. Methods We performed WASp chromatin immunoprecipitation and deep sequencing (ChIP-seq) in thymocytes and spleen CD4\(^+\) T cells. Results WASp was enriched at genic and intergenic regions and associated with the transcription start sites of protein-coding genes. Thymocytes and spleen CD4\(^+\) T cells showed 15 common WASp-interacting genes, including the gene encoding T cell factor (TCF)12. WASp KO thymocytes had reduced nuclear TCF12 whereas thymocytes expressing constitutively active WASp\(^{L272P}\) and WASp\(^{I296T}\) had increased nuclear TCF12, suggesting that regulated WASp activity controlled nuclear TCF12. We identify a putative DNA element enriched in WASp ChIP-seq samples identical to a TCF1-binding site and we show that WASp directly interacted with TCF1 in the nucleus. Conclusions These data place nuclear WASp in proximity with TCF1 and TCF12, essential factors for T cell development.}, language = {en} } @article{KunzGoettlichWallesetal.2017, author = {Kunz, Meik and G{\"o}ttlich, Claudia and Walles, Thorsten and Nietzer, Sarah and Dandekar, Gudrun and Dandekar, Thomas}, title = {MicroRNA-21 versus microRNA-34: Lung cancer promoting and inhibitory microRNAs analysed in silico and in vitro and their clinical impact}, series = {Tumor Biology}, volume = {39}, journal = {Tumor Biology}, number = {7}, doi = {10.1177/1010428317706430}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158399}, year = {2017}, abstract = {MicroRNAs are well-known strong RNA regulators modulating whole functional units in complex signaling networks. Regarding clinical application, they have potential as biomarkers for prognosis, diagnosis, and therapy. In this review, we focus on two microRNAs centrally involved in lung cancer progression. MicroRNA-21 promotes and microRNA-34 inhibits cancer progression. We elucidate here involved pathways and imbed these antagonistic microRNAs in a network of interactions, stressing their cancer microRNA biology, followed by experimental and bioinformatics analysis of such microRNAs and their targets. This background is then illuminated from a clinical perspective on microRNA-21 and microRNA-34 as general examples for the complex microRNA biology in lung cancer and its diagnostic value. Moreover, we discuss the immense potential that microRNAs such as microRNA-21 and microRNA-34 imply by their broad regulatory effects. These should be explored for novel therapeutic strategies in the clinic.}, language = {en} } @article{KrsticHerrmannGadjanskietal.2017, author = {Krstic, Jelena and Herrmann, Marietta and Gadjanski, Ivana and Mojsilovic, Slavko}, title = {Editorial: Microenvironment-derived stem cell plasticity}, series = {Frontiers in Cell and Developmental Biology}, volume = {5}, journal = {Frontiers in Cell and Developmental Biology}, issn = {2296-634X}, doi = {10.3389/fcell.2017.00082}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-197424}, year = {2017}, abstract = {No abstract available.}, language = {en} } @article{KrohnMoltAlawiFoerstneretal.2017, author = {Krohn-Molt, Ines and Alawi, Malik and F{\"o}rstner, Konrad U. and Wiegandt, Alena and Burkhardt, Lia and Indenbirken, Daniela and Thieß, Melanie and Grundhoff, Adam and Kehr, Julia and Tholey, Andreas and Streit, Wolfgang R.}, title = {Insights into microalga and bacteria interactions of selected phycosphere biofilms using metagenomic, transcriptomic, and proteomic approaches}, series = {Frontiers in Microbiology}, volume = {2017}, journal = {Frontiers in Microbiology}, number = {8}, doi = {10.3389/fmicb.2017.01941}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-173701}, year = {2017}, abstract = {Microalga are of high relevance for the global carbon cycling and it is well-known that they are associated with a microbiota. However, it remains unclear, if the associated microbiota, often found in phycosphere biofilms, is specific for the microalga strains and which role individual bacterial taxa play. Here we provide experimental evidence that \(Chlorella\) \(saccharophila\), \(Scenedesmus\) \(quadricauda\), and \(Micrasterias\) \(crux-melitensis\), maintained in strain collections, are associated with unique and specific microbial populations. Deep metagenome sequencing, binning approaches, secretome analyses in combination with RNA-Seq data implied fundamental differences in the gene expression profiles of the microbiota associated with the different microalga. Our metatranscriptome analyses indicates that the transcriptionally most active bacteria with respect to key genes commonly involved in plant-microbe interactions in the Chlorella (Trebouxiophyceae) and Scenedesmus (Chlorophyceae) strains belong to the phylum of the α-Proteobacteria. In contrast, in the Micrasterias (Zygnematophyceae) phycosphere biofilm bacteria affiliated with the phylum of the Bacteroidetes showed the highest gene expression rates. We furthermore show that effector molecules known from plant-microbe interactions as inducers for the innate immunity are already of relevance at this evolutionary early plant-microbiome level.}, language = {en} } @article{KredelKunzmannSchlegeletal.2017, author = {Kredel, Markus and Kunzmann, Steffen and Schlegel, Paul-Gerhardt and W{\"o}lfl, Matthias and Nordbeck, Peter and B{\"u}hler, Christoph and Lotz, Christopher and Lepper, Philipp M. and Wirbelauer, Johannes and Roewer, Norbert and Muellenbach, Ralf M.}, title = {Double Peripheral Venous and Arterial Cannulation for Extracorporeal Membrane Oxygenation in Combined Septic and Cardiogenic Shock}, series = {American Journal of Case Reports}, volume = {18}, journal = {American Journal of Case Reports}, doi = {10.12659/AJCR.902485}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158193}, pages = {723-727}, year = {2017}, abstract = {Background: The use of venoarterial extracorporeal membrane oxygenation (va-ECMO) via peripheral cannulation for septic shock is limited by blood flow and increased afterload for the left ventricle. Case Report: A 15-year-old girl with acute myelogenous leukemia, suffering from severe septic and cardiogenic shock, was treated by venoarterial extracorporeal membrane oxygenation (va-ECMO). Sufficient extracorporeal blood flow matching the required oxygen demand could only be achieved by peripheral cannulation of both femoral arteries. Venous drainage was performed with a bicaval cannula inserted via the left V. femoralis. To accomplish left ventricular unloading, an additional drainage cannula was placed in the left atrium via percutaneous atrioseptostomy (va-va-ECMO). Cardiac function recovered and the girl was weaned from the ECMO on day 6. Successful allogenic stem cell transplantation took place 2 months later. Conclusions: In patients with vasoplegic septic shock and impaired cardiac contractility, double peripheral venoarterial extracorporeal membrane oxygenation (va-va-ECMO) with transseptal left atrial venting can by a lifesaving option.}, language = {en} } @article{Kramer2017, author = {Kramer, Susanne}, title = {The ApaH-like phosphatase TbALPH1 is the major mRNA decapping enzyme of trypanosomes}, series = {PLoS Pathogens}, volume = {13}, journal = {PLoS Pathogens}, number = {6}, doi = {10.1371/journal.ppat.1006456}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158482}, pages = {e1006456}, year = {2017}, abstract = {5'-3' decay is the major mRNA decay pathway in many eukaryotes, including trypanosomes. After deadenylation, mRNAs are decapped by the nudix hydrolase DCP2 of the decapping complex and finally degraded by the 5'-3' exoribonuclease. Uniquely, trypanosomes lack homologues to all subunits of the decapping complex, while deadenylation and 5'-3' degradation are conserved. Here, I show that the parasites use an ApaH-like phosphatase (ALPH1) as their major mRNA decapping enzyme. The protein was recently identified as a novel trypanosome stress granule protein and as involved in mRNA binding. A fraction of ALPH1 co-localises exclusively with the trypanosome 5'-3' exoribonuclease XRNA to a special granule at the posterior pole of the cell, indicating a connection between the two enzymes. RNAi depletion of ALPH1 is lethal and causes a massive increase in total mRNAs that are deadenylated, but have not yet started 5'-3' decay. These data suggest that ALPH1 acts downstream of deadenylation and upstream of mRNA degradation, consistent with a function in mRNA decapping. In vitro experiments show that recombinant, N-terminally truncated ALHP1 protein, but not a catalytically inactive mutant, sensitises the capped trypanosome spliced leader RNA to yeast Xrn1, but only if an RNA 5' polyphosphatase is included. This indicates that the decapping mechanism of ALPH1 differs from the decapping mechanism of Dcp2 by leaving more than one phosphate group at the mRNA's 5' end. This is the first reported function of a eukaryotic ApaH-like phosphatase, a bacterial-derived class of enzymes present in all phylogenetic super-groups of the eukaryotic kingdom. The substrates of eukaryotic ApaH-like phosphatases are unknown. However, the substrate of the related bacterial enzyme ApaH, diadenosine tetraphosphate, is highly reminiscent of a eukaryotic mRNA cap.}, language = {en} } @article{Kraft2017, author = {Kraft, Stephan}, title = {Wider den „Hauffen junger Schnautzhahnen" : Grimmelshausens Versuch, die Erinnerung an den Dreißigj{\"a}hrigen Krieg in der Gegenwart festzuhalten}, series = {Internationales Archiv f{\"u}r Sozialgeschichte der deutschen Literatur}, volume = {42}, journal = {Internationales Archiv f{\"u}r Sozialgeschichte der deutschen Literatur}, number = {1}, issn = {1865-9128}, doi = {10.1515/iasl-2017-0005}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-193938}, pages = {122-134}, year = {2017}, abstract = {This paper retraces the specific conception of the 'present' as manifested in Satyrischer Pilgram, Grimmelshausen's first published work. In the face of progressively vanishing consciousness of the past terrors of the Thirty Years' War, the Pilgram devises a program for bringing the experience of a whole generation to the present, thereby saving it for the future. Instead of delivering a general reflection on the nature of war, it suggests to narrate individually experienced "particularities." It is crucial that all of these experiences are negative, not meant to prompt imitation, but instead rather to build and keep up a stronghold against attitudes and actions of the past.}, language = {de} } @article{Kraft2017, author = {Kraft, Stephan}, title = {Vom Kopf auf die F{\"u}ße gestellt, auf dass die Welt kopfsteht. B{\"u}rgerliches Trauerspiel und Kom{\"o}die in Karl von Holteis Trauerspiel in Berlin und Johann Nestroys Die verh{\"a}ngnißvolle Faschings-Nacht}, series = {Nestroyana}, volume = {37}, journal = {Nestroyana}, publisher = {Lehner}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-257900}, pages = {39-50}, year = {2017}, abstract = {Kein Abstract verf{\"u}gbar.}, language = {de} } @article{KraftSchuhmannGarzetal.2017, author = {Kraft, Peter and Schuhmann, Michael K. and Garz, Cornelia and Jandke, Solveig and Urlaub, Daniela and Mencl, Stine and Zernecke, Alma and Heinze, Hans-Jochen and Carare, Roxana O. and Kleinschnitz, Christoph and Schreiber, Stefanie}, title = {Hypercholesterolemia induced cerebral small vessel disease}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {8}, doi = {10.1371/journal.pone.0182822}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170493}, pages = {e0182822}, year = {2017}, abstract = {Background While hypercholesterolemia plays a causative role for the development of ischemic stroke in large vessels, its significance for cerebral small vessel disease (CSVD) remains unclear. We thus aimed to understand the detailed relationship between hypercholesterolemia and CSVD using the well described Ldlr\(^{-/-}\) mouse model. Methods We used Ldlr\(^{-/-}\) mice (n = 16) and wild-type (WT) mice (n = 15) at the age of 6 and 12 months. Ldlr\(^{-/-}\) mice develop high plasma cholesterol levels following a high fat diet. We analyzed cerebral capillaries and arterioles for intravascular erythrocyte accumulations, thrombotic vessel occlusions, blood-brain barrier (BBB) dysfunction and microbleeds. Results We found a significant increase in the number of erythrocyte stases in 6 months old Ldlr\(^{-/-}\) mice compared to all other groups (P < 0.05). Ldlr\(^{-/-}\) animals aged 12 months showed the highest number of thrombotic occlusions while in WT animals hardly any occlusions could be observed (P < 0.001). Compared to WT mice, Ldlr\(^{-/-}\) mice did not display significant gray matter BBB breakdown. Microhemorrhages were observed in one Ldlr\(^{-/-}\) mouse that was 6 months old. Results did not differ when considering subcortical and cortical regions. Conclusions In Ldlr\(^{-/-}\) mice, hypercholesterolemia is related to a thrombotic CSVD phenotype, which is different from hypertension-related CSVD that associates with a hemorrhagic CSVD phenotype. Our data demonstrate a relationship between hypercholesterolemia and the development of CSVD. Ldlr\(^{-/-}\) mice appear to be an adequate animal model for research into CSVD.}, language = {en} } @article{KraftFleischerWiedmannetal.2017, author = {Kraft, Peter and Fleischer, Anna and Wiedmann, Silke and R{\"u}cker, Viktoria and Mackenrodt, Daniel and Morbach, Caroline and Malzahn, Uwe and Kleinschnitz, Christoph and St{\"o}rk, Stefan and Heuschmann, Peter U.}, title = {Feasibility and diagnostic accuracy of point-of-care handheld echocardiography in acute ischemic stroke patients - a pilot study}, series = {BMC Neurology}, volume = {17}, journal = {BMC Neurology}, number = {159}, doi = {10.1186/s12883-017-0937-8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158081}, year = {2017}, abstract = {Background: Standard echocardiography (SE) is an essential part of the routine diagnostic work-up after ischemic stroke (IS) and also serves for research purposes. However, access to SE is often limited. We aimed to assess feasibility and accuracy of point-of-care (POC) echocardiography in a stroke unit (SU) setting. Methods: IS patients were recruited on the SU of the University Hospital W{\"u}rzburg, Germany. Two SU team members were trained in POC echocardiography for a three-month period to assess a set of predefined cardiac parameters including left ventricular ejection fraction (LVEF). Diagnostic agreement was assessed by comparing POC with SE executed by an expert sonographer, and intraclass correlation coefficient (ICC) or kappa (κ) with 95\% confidence intervals (95\% CI) were calculated. Results: In the 78 patients receiving both POC and SE agreement for cardiac parameters was good, with ICC varying from 0.82 (95\% CI 0.71-0.89) to 0.93 (95\% CI 0.87-0.96), and κ from 0.39 (-95\% CI 0.14-0.92) to 0.79 (95\% CI 0.67-0.91). Detection of systolic dysfunction with POC echocardiography compared to SE was very good, with an area under the curve of 0.99 (0.96-1.00). Interrater agreement for LVEF measured by POC echocardiography was good with κ 0.63 (95\% CI 0.40-0.85). Conclusions: POC echocardiography in a SU setting is feasible enabling reliable quantification of LVEF and preliminary assessment of selected cardiac parameters that might be used for research purposes. Its potential clinical utility in triaging stroke patients who should undergo or do not necessarily require SE needs to be investigated in larger prospective diagnostic studies.}, language = {en} } @article{KraftStanglKrauseetal.2017, author = {Kraft, Andreas and Stangl, Johannes and Krause, Ana-Maria and M{\"u}ller-Buschbaum, Klaus and Beuerle, Florian}, title = {Supramolecular frameworks based on [60]fullerene hexakisadducts}, series = {Beilstein Journal of Organic Chemistry}, volume = {13}, journal = {Beilstein Journal of Organic Chemistry}, doi = {10.3762/bjoc.13.1}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-171996}, pages = {1-9}, year = {2017}, abstract = {[60]Fullerene hexakisadducts possessing 12 carboxylic acid side chains form crystalline hydrogen-bonding frameworks in the solid state. Depending on the length of the linker between the reactive sites and the malonate units, the distance of the [60]fullerene nodes and thereby the spacing of the frameworks can be controlled and for the most elongated derivative, continuous channels are obtained within the structure. Stability, structural integrity and porosity of the material were investigated by powder X-ray diffraction, thermogravimetry and sorption measurements.}, language = {en} } @article{KollmannsbergerKerschnitzkiReppetal.2017, author = {Kollmannsberger, Philip and Kerschnitzki, Michael and Repp, Felix and Wagermaier, Wolfgang and Weinkamer, Richard and Fratzl, Peter}, title = {The small world of osteocytes: connectomics of the lacuno-canalicular network in bone}, series = {New Journal of Physics}, volume = {19}, journal = {New Journal of Physics}, number = {073019}, doi = {10.1088/1367-2630/aa764b}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170662}, year = {2017}, abstract = {Osteocytes and their cell processes reside in a large, interconnected network of voids pervading the mineralized bone matrix of most vertebrates. This osteocyte lacuno-canalicular network (OLCN) is believed to play important roles in mechanosensing, mineral homeostasis, and for the mechanical properties of bone. While the extracellular matrix structure of bone is extensively studied on ultrastructural and macroscopic scales, there is a lack of quantitative knowledge on how the cellular network is organized. Using a recently introduced imaging and quantification approach, we analyze the OLCN in different bone types from mouse and sheep that exhibit different degrees of structural organization not only of the cell network but also of the fibrous matrix deposited by the cells. We define a number of robust, quantitative measures that are derived from the theory of complex networks. These measures enable us to gain insights into how efficient the network is organized with regard to intercellular transport and communication. Our analysis shows that the cell network in regularly organized, slow-growing bone tissue from sheep is less connected, but more efficiently organized compared to irregular and fast-growing bone tissue from mice. On the level of statistical topological properties (edges per node, edge length and degree distribution), both network types are indistinguishable, highlighting that despite pronounced differences at the tissue level, the topological architecture of the osteocyte canalicular network at the subcellular level may be independent of species and bone type. Our results suggest a universal mechanism underlying the self-organization of individual cells into a large, interconnected network during bone formation and mineralization.}, language = {en} } @article{KohlmorgenEliasSchoen2017, author = {Kohlmorgen, Britta and Elias, Johannes and Schoen, Christoph}, title = {Improved performance of the artus Mycobacterium tuberculosis RG PCR kit in a low incidence setting: a retrospective monocentric study}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, number = {14127}, doi = {10.1038/s41598-017-14367-z}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159248}, year = {2017}, abstract = {Tuberculosis (TB) and the spread of Mycobacterium tuberculosis complex (MTBC) strains resistant against rifampin (RIF) and isoniazid (INH) pose a serious threat to global health. However, rapid and reliable MTBC detection along with RIF/INH susceptibility testing are challenging in low prevalence countries due to the higher rate of false positives. Here, we provide the first performance data for the artus MTBC PCR assay in a low prevalence setting. We analyze 1323 respiratory and 311 non-respiratory samples with the artus MTBC PCR assay as well as by mycobacterial culture and microscopy. We propose retesting of specimens in duplicate and consideration of a determined cycle-threshold value cut-off greater than 34, as this significantly increases accuracy, specificity, and negative predictive value without affecting sensitivity. Furthermore, we tested fourteen MTBC positive samples with the GenoType MTBDRplus test and demonstrate that using an identical DNA extraction protocol for both assays does not impair downstream genotypic testing for RIF and INH susceptibility. In conclusion, our procedure optimizes the use of the artus MTB assay with workload efficient methods in a low incidence setting. Combining the modified artus MTB with the GenoType MTBDRplus assays allows rapid and accurate detection of MTBC and RIF/INH resistance.}, language = {en} } @article{KoesslerSchwarzWeberetal.2017, author = {Koessler, Juergen and Schwarz, Michaela and Weber, Katja and Etzel, Julia and Koessler, Angela and Boeck, Markus and Kobsar, Anna}, title = {The role of adenosine diphosphate mediated platelet responsiveness for the stability of platelet integrity in citrated whole blood under ex vivo conditions}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {11}, doi = {10.1371/journal.pone.0188193}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159879}, pages = {e0188193}, year = {2017}, abstract = {Background: Platelets are important for effective hemostasis and considered to be involved in pathophysiological processes, e.g. in cardiovascular diseases. Platelets provided for research or for therapeutic use are frequently separated from citrated whole blood (WB) stored for different periods of time. Although functionally intact platelets are required, the stability of platelet integrity, e.g. adenosine diphosphate (ADP) mediated responsiveness, has never been thoroughly investigated in citrated WB under ex vivo conditions. Objectives: Platelet integrity was evaluated at different time points in citrated WB units, collected from healthy donors and stored for 5 days at ambient temperature. The analysis included the measurement of activation markers, of induced light transmission aggregometry and of purinergic receptor expression or function. Inhibitory pathways were explored by determination of basal vasodilator-stimulated phosphoprotein (VASP)-phosphorylation, intracellular cyclic nucleotide levels and the content of phosphodiesterase 5A. Fresh peripheral blood (PB) samples served as controls. Results: On day 5 of storage, thrombin receptor activating peptide-6 (TRAP-6) stimulated CD62P expression and fibrinogen binding were comparable to PB samples. ADP induced aggregation continuously decreased during storage. Purinergic receptor expression remained unchanged, whereas the P2Y1 activity progressively declined in contrast to preserved P2Y12 and P2X1 function. Inhibitory pathways were unaffected except for a slight elevation of VASP phosphorylation at Ser\(^{239}\) on day 5. Conclusion: After 5 days of storage in citrated WB, platelet responsiveness to TRAP-6 is sufficiently maintained. However, ADP-mediated platelet integrity is more sensitive to deterioration, especially after storage for more than 2 days. Decreasing ADP-induced aggregation is particularly caused by the impairment of the purinergic receptor P2Y1 activity. These characteristics should be considered in the use of platelets from stored citrated WB for experimental or therapeutic issues.}, language = {en} } @article{KoenigerKuerten2017, author = {Koeniger, Tobias and Kuerten, Stefanie}, title = {Splitting the "unsplittable": Dissecting resident and infiltrating macrophages in experimental autoimmune encephalomyelitis}, series = {International Journal of Molecular Sciences}, volume = {18}, journal = {International Journal of Molecular Sciences}, number = {10}, issn = {1422-0067}, doi = {10.3390/ijms18102072}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-285067}, year = {2017}, abstract = {Macrophages predominate the inflammatory landscape within multiple sclerosis (MS) lesions, not only regarding cellularity but also with respect to the diverse functions this cell fraction provides during disease progression and remission. Researchers have been well aware of the fact that the macrophage pool during central nervous system (CNS) autoimmunity consists of a mixture of myeloid cells. Yet, separating these populations to define their unique contribution to disease pathology has long been challenging due to their similar marker expression. Sophisticated lineage tracing approaches as well as comprehensive transcriptome analysis have elevated our insight into macrophage biology to a new level enabling scientists to dissect the roles of resident (microglia and non-parenchymal macrophages) and infiltrating macrophages with unprecedented precision. To do so in an accurate way, researchers have to know their toolbox, which has been filled with diverse, discriminating approaches from decades of studying neuroinflammation in animal models. Every method has its own strengths and weaknesses, which will be addressed in this review. The focus will be on tools to manipulate and/or identify different macrophage subgroups within the injured murine CNS.}, language = {en} } @article{KnauerGessnerFensholtetal.2017, author = {Knauer, Kim and Gessner, Ursula and Fensholt, Rasmus and Forkuor, Gerald and Kuenzer, Claudia}, title = {Monitoring agricultural expansion in Burkina Faso over 14 years with 30 m resolution time series: the role of population growth and implications for the environment}, series = {Remote Sensing}, volume = {9}, journal = {Remote Sensing}, number = {2}, doi = {10.3390/rs9020132}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-171905}, year = {2017}, abstract = {Burkina Faso ranges amongst the fastest growing countries in the world with an annual population growth rate of more than three percent. This trend has consequences for food security since agricultural productivity is still on a comparatively low level in Burkina Faso. In order to compensate for the low productivity, the agricultural areas are expanding quickly. The mapping and monitoring of this expansion is difficult, even on the basis of remote sensing imagery, since the extensive farming practices and frequent cloud coverage in the area make the delineation of cultivated land from other land cover and land use types a challenging task. However, as the rapidly increasing population could have considerable effects on the natural resources and on the regional development of the country, methods for improved mapping of LULCC (land use and land cover change) are needed. For this study, we applied the newly developed ESTARFM (Enhanced Spatial and Temporal Adaptive Reflectance Fusion Model) framework to generate high temporal (8-day) and high spatial (30 m) resolution NDVI time series for all of Burkina Faso for the years 2001, 2007, and 2014. For this purpose, more than 500 Landsat scenes and 3000 MODIS scenes were processed with this automated framework. The generated ESTARFM NDVI time series enabled extraction of per-pixel phenological features that all together served as input for the delineation of agricultural areas via random forest classification at 30 m spatial resolution for entire Burkina Faso and the three years. For training and validation, a randomly sampled reference dataset was generated from Google Earth images and based on expert knowledge. The overall accuracies of 92\% (2001), 91\% (2007), and 91\% (2014) indicate the well-functioning of the applied methodology. The results show an expansion of agricultural area of 91\% between 2001 and 2014 to a total of 116,900 km\(^2\). While rainfed agricultural areas account for the major part of this trend, irrigated areas and plantations also increased considerably, primarily promoted by specific development projects. This expansion goes in line with the rapid population growth in most provinces of Burkina Faso where land was still available for an expansion of agricultural area. The analysis of agricultural encroachment into protected areas and their surroundings highlights the increased human pressure on these areas and the challenges of environmental protection for the future.}, language = {en} } @article{KlughammerDittrichBlometal.2017, author = {Klughammer, Johanna and Dittrich, Marcus and Blom, Jochen and Mitesser, Vera and Vogel, Ulrich and Frosch, Matthias and Goesmann, Alexander and M{\"u}ller, Tobias and Schoen, Christoph}, title = {Comparative genome sequencing reveals within-host genetic changes in Neisseria meningitidis during invasive disease}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {1}, doi = {10.1371/journal.pone.0169892}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159547}, pages = {e0169892}, year = {2017}, abstract = {Some members of the physiological human microbiome occasionally cause life-threatening disease even in immunocompetent individuals. A prime example of such a commensal pathogen is Neisseria meningitidis, which normally resides in the human nasopharynx but is also a leading cause of sepsis and epidemic meningitis. Using N. meningitidis as model organism, we tested the hypothesis that virulence of commensal pathogens is a consequence of within host evolution and selection of invasive variants due to mutations at contingency genes, a mechanism called phase variation. In line with the hypothesis that phase variation evolved as an adaptation to colonize diverse hosts, computational comparisons of all 27 to date completely sequenced and annotated meningococcal genomes retrieved from public databases showed that contingency genes are indeed enriched for genes involved in host interactions. To assess within-host genetic changes in meningococci, we further used ultra-deep whole-genome sequencing of throat-blood strain pairs isolated from four patients suffering from invasive meningococcal disease. We detected up to three mutations per strain pair, affecting predominantly contingency genes involved in type IV pilus biogenesis. However, there was not a single (set) of mutation(s) that could invariably be found in all four pairs of strains. Phenotypic assays further showed that these genetic changes were generally not associated with increased serum resistance, higher fitness in human blood ex vivo or differences in the interaction with human epithelial and endothelial cells in vitro. In conclusion, we hypothesize that virulence of meningococci results from accidental emergence of invasive variants during carriage and without within host evolution of invasive phenotypes during disease progression in vivo.}, language = {en} } @article{KleinHesslingMuhammadKleinetal.2017, author = {Klein-Hessling, Stefan and Muhammad, Khalid and Klein, Matthias and Pusch, Tobias and Rudolf, Ronald and Fl{\"o}ter, Jessica and Qureischi, Musga and Beilhack, Andreas and Vaeth, Martin and Kummerow, Carsten and Backes, Christian and Schoppmeyer, Rouven and Hahn, Ulrike and Hoth, Markus and Bopp, Tobias and Berberich-Siebelt, Friederike and Patra, Amiya and Avots, Andris and M{\"u}ller, Nora and Schulze, Almut and Serfling, Edgar}, title = {NFATc1 controls the cytotoxicity of CD8\(^{+}\) T cells}, series = {Nature Communications}, volume = {8}, journal = {Nature Communications}, number = {511}, doi = {10.1038/s41467-017-00612-6}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170353}, year = {2017}, abstract = {Cytotoxic T lymphocytes are effector CD8\(^{+}\) T cells that eradicate infected and malignant cells. Here we show that the transcription factor NFATc1 controls the cytotoxicity of mouse cytotoxic T lymphocytes. Activation of Nfatc1\(^{-/-}\) cytotoxic T lymphocytes showed a defective cytoskeleton organization and recruitment of cytosolic organelles to immunological synapses. These cells have reduced cytotoxicity against tumor cells, and mice with NFATc1-deficient T cells are defective in controlling Listeria infection. Transcriptome analysis shows diminished RNA levels of numerous genes in Nfatc1\(^{-/-}\) CD8\(^{+}\) T cells, including Tbx21, Gzmb and genes encoding cytokines and chemokines, and genes controlling glycolysis. Nfatc1\(^{-/-}\), but not Nfatc2\(^{-/-}\) CD8\(^{+}\) T cells have an impaired metabolic switch to glycolysis, which can be restored by IL-2. Genome-wide ChIP-seq shows that NFATc1 binds many genes that control cytotoxic T lymphocyte activity. Together these data indicate that NFATc1 is an important regulator of cytotoxic T lymphocyte effector functions.}, language = {en} } @article{KingslakeDiasDawsonetal.2017, author = {Kingslake, Jonathan and Dias, Rebecca and Dawson, Gerard R. and Simon, Judit and Goodwin, Guy M. and Harmer, Catherine J. and Morriss, Richard and Brown, Susan and Guo, Boliang and Dourish, Colin T. and Ruh{\´e}, Henricus G. and Lever, Anne G. and Veltman, Dick J. and van Schaik, Anneke and Deckert, J{\"u}rgen and Reif, Andreas and St{\"a}blein, Michael and Menke, Andreas and Gorwood, Philip and Voegeli, G{\´e}raldine and Perez, Victor and Browning, Michael}, title = {The effects of using the PReDicT Test to guide the antidepressant treatment of depressed patients: study protocol for a randomised controlled trial}, series = {Trials}, volume = {18}, journal = {Trials}, doi = {10.1186/s13063-017-2247-2}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-173012}, year = {2017}, abstract = {Background Antidepressant medication is commonly used to treat depression. However, many patients do not respond to the first medication prescribed and improvements in symptoms are generally only detectable by clinicians 4-6 weeks after the medication has been initiated. As a result, there is often a long delay between the decision to initiate an antidepressant medication and the identification of an effective treatment regimen. Previous work has demonstrated that antidepressant medications alter subtle measures of affective cognition in depressed patients, such as the appraisal of facial expression. Furthermore, these cognitive effects of antidepressants are apparent early in the course of treatment and can also predict later clinical response. This trial will assess whether an electronic test of affective cognition and symptoms (the Predicting Response to Depression Treatment Test; PReDicT Test) can be used to guide antidepressant treatment in depressed patients and, therefore, hasten treatment response compared to a control group of patients treated as usual. Methods/design The study is a randomised, two-arm, multi-centre, open-label, clinical investigation of a medical device, the PReDicT Test. It will be conducted in five European countries (UK, France, Spain, Germany and the Netherlands) in depressed patients who are commencing antidepressant medication. Patients will be randomised to treatment guided by the PReDicT Test (PReDicT arm) or to Treatment as Usual (TaU arm). Patients in the TaU arm will be treated as per current standard guidelines in their particular country. Patients in the PReDicT arm will complete the PReDicT Test after 1 (and if necessary, 2) weeks of treatment. If the test indicates non-response to the treatment, physicians will be advised to immediately alter the patient's antidepressant therapy by dose escalation or switching to another compound. The primary outcome of the study is the proportion of patients showing a clinical response (defined as 50\% or greater decrease in baseline scores of depressionmeasured using the Quick Inventory of Depressive Symptoms - Self-Rated questionnaire) at week 8. Health economic and acceptability data will also be collected and analysed. Discussion This trial will test the clinical efficacy, cost-effectiveness and acceptability of using the novel PReDicT Test to guide antidepressant treatment selection in depressed patients. Trial registration ClinicalTrials.gov, ID: NCT02790970. Registered on 30 March 2016.}, language = {en} } @article{KelmSeyfriedReimeretal.2017, author = {Kelm, M. and Seyfried, F. and Reimer, S. and Krajinovic, K. and Miras, A. D. and Jurowich, C. and Germer, C. T. and Brand, M.}, title = {Proximal jejunal stoma as ultima ratio in case of traumatic distal duodenal perforation facilitating successful EndoVAC\(^{®}\) treatment: a case report}, series = {International Journal of Surgery Case Reports}, volume = {41}, journal = {International Journal of Surgery Case Reports}, doi = {10.1016/j.ijscr.2017.11.022}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159292}, pages = {401-403}, year = {2017}, abstract = {Introduction: During damage control surgery for blunt abdominal traumata simultaneous duodenal perforations can be missed making secondary sufficient surgical treatment challenging. Endoluminal vacuum (EndoVAC™) therapy has been shown to be a revolutionary option but has anatomical and technical limits. Presentation of the case: A 59-year old man with hemorrhagic shock due to rupture of the mesenteric root after blunt abdominal trauma received damage control treatment. Within a scheduled second-look, perforation of the posterior duodenal wall was identified. Due to local and systemic conditions, further surgical treatment was limited. Decision for endoscopic treatment was made but proved to be difficult due to the distal location. Finally, double-barreled jejunal stoma was created for transstomal EndoVAC™ treatment. Complete leakage healing was achieved and jejunostomy reversal followed subsequently. Discussion: During damage control surgery simultaneous bowel injuries can be missed leading to life-threatening complications with limited surgical options. EndoVAC™ treatment is an option for gastrointestinal perforations but has anatomical limitations that can be sufficiently shifted by a transstomal approach for intestinal leakage. Conclusion: In trauma related laparotomy complete mobilization of the duodenum is crucial. As ultima ratio, transstomal EndoVAC™ is a safe and feasible option and can be considered for similar cases.}, language = {en} } @article{KatzorkeZellerMuelleretal.2017, author = {Katzorke, Andrea and Zeller, Julia B. M. and M{\"u}ller, Laura D. and Lauer, Martin and Polak, Thomas and Reif, Andreas and Deckert, J{\"u}rgen and Herrmann, Martin J.}, title = {Reduced activity in the right inferior frontal gyrus in elderly APOE-E4 carriers during a verbal fluency task}, series = {Frontiers in Human Neuroscience}, volume = {11}, journal = {Frontiers in Human Neuroscience}, doi = {10.3389/fnhum.2017.00046}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-171892}, year = {2017}, abstract = {Apolipoprotein-E4 (APOE-E4) is a major genetic risk factor for developing Alzheimer's disease (AD). The verbal fluency task (VFT), especially the subtask category fluency, has shown to provide a good discrimination between cognitively normal controls and subjects with AD. Interestingly, APOE-E4 seems to have no effect on the behavioral performance during a VFT in healthy elderly. Thus, the purpose of the present study was to reveal possible compensation mechanisms by investigating the effect of APOE-E4 on the hemodynamic response in non-demented elderly during a VFT by using functional near-infrared spectroscopy (fNIRS). We compared performance and hemodynamic response of high risk APOE-E4/E4, -E3/E4 carriers with neutral APOE-E3/E3 non-demented subjects (N = 288; 70-77 years). No difference in performance was found. APOE-E4/E4, -E3/E4 carriers had a decreased hemodynamic response in the right inferior frontal junction (IFJ) with a corresponding higher response in the left middle frontal gyrus (MFG) during category fluency. Performance was correlated with the hemodynamic response in the MFG. We assume a compensation of decreased IFJ brain activation by utilizing the MFG during category fluency and thus resulting in no behavioral differences between APOE-groups during the performance of a VFT.}, language = {en} } @article{KasaragodMidekessaSridharetal.2017, author = {Kasaragod, Prasad and Midekessa, Getnet B. and Sridhar, Shruthi and Schmitz, Werner and Kiema, Tiila-Riikka and Hiltunen, Jukka K. and Wierenga, Rik K.}, title = {Structural enzymology comparisons of multifunctional enzyme, type-1 (MFE1): the flexibility of its dehydrogenase part}, series = {FEBS Open Bio}, volume = {7}, journal = {FEBS Open Bio}, number = {12}, doi = {10.1002/2211-5463.12337}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172732}, pages = {1830-1842}, year = {2017}, abstract = {Multifunctional enzyme, type-1 (MFE1) is a monomeric enzyme with a 2E-enoyl-CoA hydratase and a 3S-hydroxyacyl-CoA dehydrogenase (HAD) active site. Enzyme kinetic data of rat peroxisomal MFE1 show that the catalytic efficiencies for converting the short-chain substrate 2E-butenoyl-CoA into acetoacetyl-CoA are much lower when compared with those of the homologous monofunctional enzymes. The mode of binding of acetoacetyl-CoA (to the hydratase active site) and the very similar mode of binding of NAD\(^+\) and NADH (to the HAD part) are described and compared with those of their monofunctional counterparts. Structural comparisons suggest that the conformational flexibility of the HAD and hydratase parts of MFE1 are correlated. The possible importance of the conformational flexibility of MFE1 for its biocatalytic properties is discussed.}, language = {en} } @article{KarlGriesshammerUeceyleretal.2017, author = {Karl, Franziska and Grießhammer, Anne and {\"U}{\c{c}}eyler, Nurcan and Sommer, Claudia}, title = {Differential Impact of miR-21 on Pain and Associated Affective and Cognitive Behavior after Spared Nerve Injury in B7-H1 ko Mouse}, series = {Frontiers in Molecular Neuroscience}, volume = {10}, journal = {Frontiers in Molecular Neuroscience}, number = {219}, doi = {10.3389/fnmol.2017.00219}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170722}, year = {2017}, abstract = {MicroRNAs (miRNAs) are increasingly recognized as regulators of immune and neuronal gene expression and are potential master switches in neuropathic pain pathophysiology. miR-21 is a promising candidate that may link the immune and the pain system. To investigate the pathophysiological role of miR-21 in neuropathic pain, we assessed mice deficient of B7 homolog 1 (B7-H1), a major inhibitor of inflammatory responses. In previous studies, an upregulation of miR-21 had been shown in mouse lymphocytes. Young (8 weeks), middle-aged (6 months), and old (12 months) B7-H1 ko mice and wildtype littermates (WT) received a spared nerve injury (SNI). We assessed thermal withdrawal latencies and mechanical withdrawal thresholds. Further, we performed tests for anxiety-like and cognitive behavior. Quantitative real time PCR was used to determine miR-21 relative expression in peripheral nerves, and dorsal root ganglia (DRG) at distinct time points after SNI. We found mechanical hyposensitivity with increasing age of na{\"i}ve B7-H1 ko mice. Young and middle-aged B7-H1 ko mice were more sensitive to mechanical stimuli compared to WT mice (young: p < 0.01, middle-aged: p < 0.05). Both genotypes developed mechanical and heat hypersensitivity (p < 0.05) after SNI, without intergroup differences. No relevant differences were found after SNI in three tests for anxiety like behavior in B7-H1 ko and WT mice. Also, SNI had no effect on cognition. B7-H1 ko and WT mice showed a higher miR-21 expression (p < 0.05) and invasion of macrophages and T cells in the injured nerve 7 days after SNI without intergroup differences. Our study reveals that increased miR-21 expression in peripheral nerves after SNI is associated with reduced mechanical and heat withdrawal thresholds. These results point to a role of miR-21 in the pathophysiology of neuropathic pain, while affective behavior and cognition seem to be spared. Contrary to expectations, B7-H1 ko mice did not show higher miR-21 expression than WT mice, thus, a B7-H1 knockout may be of limited relevance for the study of miR-21 related pain.}, language = {en} } @article{KaluzaWallaceKelleretal.2017, author = {Kaluza, Benjamin F. and Wallace, Helen and Keller, Alexander and Heard, Tim A. and Jeffers, Bradley and Drescher, Nora and Bl{\"u}thgen, Nico and Leonhardt, Sara D.}, title = {Generalist social bees maximize diversity intake in plant species-rich and resource-abundant environments}, series = {Ecosphere}, volume = {8}, journal = {Ecosphere}, number = {3}, doi = {10.1002/ecs2.1758}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-171155}, pages = {e01758}, year = {2017}, abstract = {Numerous studies revealed a positive relationship between biodiversity and ecosystem functioning, suggesting that biodiverse environments may not only enhance ecosystem processes, but also benefit individual ecosystem members by, for example, providing a higher diversity of resources. Whether and how the number of available resources affects resource collection and subsequently consumers (e.g., through impacting functions associated with resources) have, however, been little investigated, although a better understanding of this relationship may help explain why the abundance and richness of many animal species typically decline with decreasing plant (resource) diversity. Using a social bee species as model (Tetragonula carbonaria), we investigated how plant species richness—recorded for study sites located in different habitats—and associated resource abundance affected the diversity and functionality (here defined as nutritional content and antimicrobial activity) of resources (i.e., pollen, nectar, and resin) collected by a generalist herbivorous consumer. The diversity of both pollen and resin collected strongly increased with increasing plant/tree species richness, while resource abundance was only positively correlated with resin diversity. These findings suggest that bees maximize resource diversity intake in (resource) diverse habitats. Collecting more diverse resources did, however, not increase their functionality, which appeared to be primarily driven by the surrounding (plant) source community in our study. In generalist herbivores, maximizing resource diversity intake may therefore primarily secure collection of sufficient amounts of resources across the entire foraging season, but it also ensures that the allocated resources meet all functional needs. Decreasing available resource diversity may thus impact consumers primarily by reduced resource abundance, but also by reduced resource functionality, particularly when resources of high functionality (e.g., from specific plant species) become scarce.}, language = {en} } @article{KaltdorfSchulzeHelmprobstetal.2017, author = {Kaltdorf, Kristin Verena and Schulze, Katja and Helmprobst, Frederik and Kollmannsberger, Philip and Dandekar, Thomas and Stigloher, Christian}, title = {Fiji macro 3D ART VeSElecT: 3D automated reconstruction tool for vesicle structures of electron tomograms}, series = {PLoS Computational Biology}, volume = {13}, journal = {PLoS Computational Biology}, number = {1}, doi = {10.1371/journal.pcbi.1005317}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172112}, year = {2017}, abstract = {Automatic image reconstruction is critical to cope with steadily increasing data from advanced microscopy. We describe here the Fiji macro 3D ART VeSElecT which we developed to study synaptic vesicles in electron tomograms. We apply this tool to quantify vesicle properties (i) in embryonic Danio rerio 4 and 8 days past fertilization (dpf) and (ii) to compare Caenorhabditis elegans N2 neuromuscular junctions (NMJ) wild-type and its septin mutant (unc-59(e261)). We demonstrate development-specific and mutant-specific changes in synaptic vesicle pools in both models. We confirm the functionality of our macro by applying our 3D ART VeSElecT on zebrafish NMJ showing smaller vesicles in 8 dpf embryos then 4 dpf, which was validated by manual reconstruction of the vesicle pool. Furthermore, we analyze the impact of C. elegans septin mutant unc-59(e261) on vesicle pool formation and vesicle size. Automated vesicle registration and characterization was implemented in Fiji as two macros (registration and measurement). This flexible arrangement allows in particular reducing false positives by an optional manual revision step. Preprocessing and contrast enhancement work on image-stacks of 1nm/pixel in x and y direction. Semi-automated cell selection was integrated. 3D ART VeSElecT removes interfering components, detects vesicles by 3D segmentation and calculates vesicle volume and diameter (spherical approximation, inner/outer diameter). Results are collected in color using the RoiManager plugin including the possibility of manual removal of non-matching confounder vesicles. Detailed evaluation considered performance (detected vesicles) and specificity (true vesicles) as well as precision and recall. We furthermore show gain in segmentation and morphological filtering compared to learning based methods and a large time gain compared to manual segmentation. 3D ART VeSElecT shows small error rates and its speed gain can be up to 68 times faster in comparison to manual annotation. Both automatic and semi-automatic modes are explained including a tutorial.}, language = {en} } @article{KalbheimZiebertz2017, author = {Kalbheim, Boris and Ziebertz, Hans-Georg}, title = {S{\"a}kular - mehr als „nichtreligi{\"o}s"?}, series = {International Journal of Practical Theology}, volume = {21}, journal = {International Journal of Practical Theology}, number = {1}, issn = {1612-9768}, doi = {10.1515/ijpt-2015-0005}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-194408}, pages = {58-88}, year = {2017}, abstract = {There is hardly an autonomous description of those who do not belong to a religious denomination and who don't regard themselves as religious in a traditional way. The terms "non-denominational" and "non-religious" implicate a dissociation from the historically traditional concept of religion, but they do not offer any alternative ideological communalities. This article discusses the option of a "secular worldview" and investigates whether religious and non-religious respondents differ in their attitudes on selected human rights - and if so, to what extent. The empirical study (N=2244) shows that human rights are supported by all young people, athough in some cases with differing emphases. In basic terms, we can discern a common worldview or 'Weltanschauung' of secular respondents. This is recognizable as an approval of the intrinsic value of the Other as well as a recognition of norms set by public society.}, language = {de} } @article{KaiserSauerKisker2017, author = {Kaiser, Sebastian and Sauer, Florian and Kisker, Caroline}, title = {The structural and functional characterization of human RecQ4 reveals insights into its helicase mechanism}, series = {Nature Communications}, volume = {8}, journal = {Nature Communications}, number = {15907}, doi = {10.1038/ncomms15907}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170769}, year = {2017}, abstract = {RecQ4 is a member of the RecQ helicase family, an evolutionarily conserved class of enzymes, dedicated to preserving genomic integrity by operating in telomere maintenance, DNA repair and replication. While reduced RecQ4 activity is associated with cancer predisposition and premature aging, RecQ4 upregulation is related to carcinogenesis and metastasis. Within the RecQ family, RecQ4 assumes an exceptional position, lacking several characteristic RecQ domains. Here we present the crystal structure of human RecQ4, encompassing the conserved ATPase core and a novel C-terminal domain that lacks resemblance to the RQC domain observed in other RecQ helicases. The new domain features a zinc-binding site and two distinct types of winged-helix domains, which are not involved in canonical DNA binding or helicase activity. Based on our structural and functional analysis, we propose that RecQ4 exerts a helicase mechanism, which may be more closely related to bacterial RecQ helicases than to its human family members.}, language = {en} } @article{KaireitSorrentinoRenneetal.2017, author = {Kaireit, Till F. and Sorrentino, Sajoscha A. and Renne, Julius and Schoenfeld, Christian and Voskrebenzev, Andreas and Gutberlet, Marcel and Schulz, Angela and Jakob, Peter M. and Hansen, Gesine and Wacker, Frank and Welte, Tobias and T{\"u}mmler, Burkhard and Vogel-Claussen, Jens}, title = {Functional lung MRI for regional monitoring of patients with cystic fibrosis}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {12}, doi = {10.1371/journal.pone.0187483}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172457}, year = {2017}, abstract = {Purpose To test quantitative functional lung MRI techniques in young adults with cystic fibrosis (CF) compared to healthy volunteers and to monitor immediate treatment effects of a single inhalation of hypertonic saline in comparison to clinical routine pulmonary function tests. Materials and methods Sixteen clinically stable CF patients and 12 healthy volunteers prospectively underwent two functional lung MRI scans and pulmonary function tests before and 2h after a single treatment of inhaled hypertonic saline or without any treatment. MRI-derived oxygen enhanced T1 relaxation measurements, fractional ventilation, first-pass perfusion parameters and a morpho-functional CF-MRI score were acquired. Results Compared to healthy controls functional lung MRI detected and quantified significantly increased ventilation heterogeneity in CF patients. Regional functional lung MRI measures of ventilation and perfusion as well as the CF-MRI score and pulmonary function tests could not detect a significant treatment effect two hours after a single treatment with hypertonic saline in young adults with CF (p>0.05). Conclusion This study shows the feasibility of functional lung MRI as a non-invasive, radiation-free tool for monitoring patients with CF.}, language = {en} } @article{KadochovaFrouzRoces2017, author = {Kadochov{\´a}, Štěp{\´a}nka and Frouz, Jan and Roces, Flavio}, title = {Sun basking in red wood ants Formica polyctena (Hymenoptera, Formicidae): Individual behaviour and temperature-dependent respiration rates}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {1}, doi = {10.1371/journal.pone.0170570}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-171936}, year = {2017}, abstract = {In early spring, red wood ants Formica polyctena are often observed clustering on the nest surface in large numbers basking in the sun. It has been hypothesized that sun-basking behaviour may contribute to nest heating because of both heat carriage into the nest by sunbasking workers, and catabolic heat production from the mobilization of the workers' lipid reserves. We investigated sun-basking behaviour in laboratory colonies of F. polyctena exposed to an artificial heat source. Observations on identified individuals revealed that not all ants bask in the sun. Sun-basking and non-sun-basking workers did not differ in body size nor in respiration rates. The number of sun-basking ants and the number of their visits to the hot spot depended on the temperature of both the air and the hot spot. To investigate whether sun basking leads to a physiological activation linked with increased lipolysis, we measured respiration rates of individual workers as a function of temperature, and compared respiration rates of sun-basking workers before and two days after they were allowed to expose themselves to a heat source over 10 days, at self-determined intervals. As expected for ectothermic animals, respiration rates increased with increasing temperatures in the range 5 to 35˚C. However, the respiration rates of sun-basking workers measured two days after a long-term exposure to the heat source were similar to those before sun basking, providing no evidence for a sustained increase of the basal metabolic rates after prolonged sun basking. Based on our measurements, we argue that self-heating of the nest mound in early spring has therefore to rely on alternative heat sources, and speculate that physical transport of heat in the ant bodies may have a significant effect.}, language = {en} } @article{JordanBittrichFehskeetal.2017, author = {Jordan, Martin C. and Bittrich, Leonie A. and Fehske, Kai and Meffert, Rainer H. and Jansen, Hendrik}, title = {A rare case of Hoffa fracture combined with lateral patellar dislocation}, series = {Trauma Case Reports}, volume = {9}, journal = {Trauma Case Reports}, doi = {10.1016/j.tcr.2017.05.001}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158315}, pages = {13-16}, year = {2017}, abstract = {The coronal unicondylar fracture of the distal femur (AO 33-B3) is a rare intraarticular injury within the weight bearing area of the knee, initially described by Albert Hoffa in 1904. We report an unusual combination of a Hoffa fracture with lateral patellar dislocation in a young adult. Our patient sustained the injury by a sudden twist of his leg during sports. He presented clinically with knee swelling, dislocation of the patella, and localized tenderness; unable to bare weight. After plane radiograph confirmed the injury, manual reduction of the patella was done by hyperextension of the knee and medialward pressure. Afterwards, a CT scan and MRI were conducted. The injury was surgically treated with lag-screws, locking-plate and MPFL-reconstruction.}, language = {en} } @article{JodeleitPalamidesBeigeletal.2017, author = {Jodeleit, Henrika and Palamides, Pia and Beigel, Florian and Mueller, Thomas and Wolf, Eckhard and Siebeck, Matthias and Gropp, Roswitha}, title = {Design and validation of a disease network of inflammatory processes in the NSG-UC mouse model}, series = {Journal of Translational Medicine}, volume = {15}, journal = {Journal of Translational Medicine}, doi = {10.1186/s12967-017-1368-4}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-225516}, year = {2017}, abstract = {Background: Ulcerative colitis (UC) is a highly progressive inflammatory disease that requires the interaction of epithelial, immune, endothelial and muscle cells and fibroblasts. Previous studies suggested two inflammatory conditions in UC-patients: 'acute' and 'remodeling' and that the design of a disease network might improve the understanding of the inflammatory processes. The objective of the study was to design and validate a disease network in the NOD-SCID IL2rγ\(^{null}\) (NSG)-UC mouse model to get a better understanding of the inflammatory processes. Methods: Leukocytes were isolated from the spleen of NSG-UC mice and subjected to flow cytometric analysis. RT-PCR and RNAseq analysis were performed from distal parts of the colon. Based on these analyses and the effects of interleukins, chemokines and growth factors described in the literature, a disease network was designed. To validate the disease network the effect of infliximab and pitrakinra was tested in the NSG-UC model. A clinical- and histological score, frequencies of human leukocytes isolated from spleen and mRNA expression levels from distal parts of the colon were determined. Results: Analysis of leukocytes isolated from the spleen of challenged NSG-UC mice corroborated CD64, CD163 and CD1a expressing CD14+ monocytes, CD1a expressing CD11b+ macrophages and HGF, TARC, IFNγ and TGFß1 mRNA as inflammatory markers. The disease network suggested that a proinflammatory condition elicited by IL-17c and lipids and relayed by cytotoxic T-cells, Th17 cells and CD1a expressing macrophages and monocytes. Conversely, the remodeling condition was evoked by IL-34 and TARC and promoted by Th2 cells and M2 monocytes. Mice benefitted from treatment with infliximab as indicated by the histological- and clinical score. As predicted by the disease network infliximab reduced the proinflammatory response by suppressing M1 monocytes and CD1a expressing monocytes and macrophages and decreased levels of IFNγ, TARC and HGF mRNA. As predicted by the disease network inflammation aggravated in the presence of pitrakinra as indicated by the clinical and histological score, elevated frequencies of CD1a expressing macrophages and TNFα and IFNγ mRNA levels. Conclusions: The combination of the disease network and the NSG-UC animal model might be developed into a powerful tool to predict efficacy or in-efficacy and potential mechanistic side effects.}, language = {en} } @article{JiGriesbeckMarder2017, author = {Ji, Lei and Griesbeck, Stefanie and Marder, Todd B.}, title = {Recent developments in and perspectives on three-coordinate boron materials: a bright future}, series = {Chemical Science}, volume = {8}, journal = {Chemical Science}, number = {2}, doi = {10.1039/c6sc04245g}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-171912}, pages = {846-863}, year = {2017}, abstract = {The empty p\(_z\)-orbital of a three-coordinate organoboron compound leads to its electron-deficient properties, which make it an excellent π-acceptor in conjugated organic chromophores. The empty p-orbital in such Lewis acids can be attacked by nucleophiles, so bulky groups are often employed to provide air-stable materials. However, many of these can still bind fluoride and cyanide anions leading to applications as anion-selective sensors. One electron reduction generates radical anions. The π-acceptor strength can be easily tuned by varying the organic substituents. Many of these compounds show strong two-photon absorption (TPA) and two-photon excited fluorescence (TPEF) behaviour, which can be applied for e.g. biological imaging. Furthermore, these chromophores can be used as emitters and electron transporters in OLEDs, and examples have recently been found to exhibit efficient thermally activated delayed fluorescence (TADF). The three-coordinate organoboron unit can also be incorporated into polycyclic aromatic hydrocarbons. Such boron-doped compounds exhibit very interesting properties, distinct from their all-carbon analogues. Significant developments have been made in all of these areas in recent years and new applications are rapidly emerging for this class of boron compounds.}, language = {en} } @article{JessbergerHoeggerGenestetal.2017, author = {Jessberger, Steffen and H{\"o}gger, Petra and Genest, Franca and Salter, Donald M. and Seefried, Lothar}, title = {Cellular pharmacodynamic effects of Pycnogenol\(^{®}\) in patients with severe osteoarthritis: a randomized controlled pilot study}, series = {BMC Complementary and Alternative Medicine}, volume = {17}, journal = {BMC Complementary and Alternative Medicine}, number = {537}, doi = {10.1186/s12906-017-2044-1}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159532}, year = {2017}, abstract = {Background: The standardized maritime pine bark extract (Pycnogenol\(^{®}\)) has previously shown symptom alleviating effects in patients suffering from moderate forms of knee osteoarthritis (OA). The cellular mechanisms for this positive impact are so far unknown. The purpose of the present randomized pilot controlled study was to span the knowledge gap between the reported clinical effects of Pycnogenol\(^{®}\) and its in vivo mechanism of action in OA patients. Methods: Thirty three patients with severe OA scheduled for a knee arthroplasty either received 100 mg of Pycnogenol\(^{®}\) twice daily or no treatment (control group) three weeks before surgery. Cartilage, synovial fluid and serum samples were collected during surgical intervention. Relative gene expression of cartilage homeostasis markers were analyzed in the patients' chondrocytes. Inflammatory and cartilage metabolism mediators were investigated in serum and synovial fluid samples. Results: The oral intake of Pycnogenol\(^{®}\) downregulated the gene expression of various cartilage degradation markers in the patients' chondrocytes, the decrease of MMP3, MMP13 and the pro-inflammatory cytokine IL1B were statistically significant (p ≤ 0.05). Additionally, protein concentrations of ADAMTS-5 in serum were reduced significantly (p ≤ 0.05) after three weeks intake of the pine bark extract. Conclusions: This is the first report about positive cellular effects of a dietary supplement on key catabolic and inflammatory markers in patients with severe OA. The results provide a rational basis for understanding previously reported clinical effects of Pycnogenol\(^{®}\) on symptom scores of patients suffering from OA.}, language = {en} } @article{JannaschWeigelEngelhardtetal.2017, author = {Jannasch, Maren and Weigel, Tobias and Engelhardt, Lisa and Wiezoreck, Judith and Gaetzner, Sabine and Walles, Heike and Schmitz, Tobias and Hansmann, Jan}, title = {\({In}\) \({vitro}\) chemotaxis and tissue remodeling assays quantitatively characterize foreign body reaction}, series = {ALTEX - Alternatives to Animal Experimentation}, volume = {34}, journal = {ALTEX - Alternatives to Animal Experimentation}, number = {2}, doi = {10.14573/altex.1610071}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172080}, pages = {253-266}, year = {2017}, abstract = {Surgical implantation of a biomaterial triggers foreign-body-induced fibrous encapsulation. Two major mechanisms of this complex physiological process are (I) chemotaxis of fibroblasts from surrounding tissue to the implant region, followed by (II) tissue remodeling. As an alternative to animal studies, we here propose a process-aligned \({in}\) \({vitro}\) test platform to investigate the material dependency of fibroblast chemotaxis and tissue remodeling mediated by material-resident macrophages. Embedded in a biomimetic three-dimensional collagen hydrogel, chemotaxis of fibroblasts in the direction of macrophage-material-conditioned cell culture supernatant was analyzed by live cell imaging. A combination of statistical analysis with a complementary parameterized random walk model allowed quantitative and qualitative characterization of the cellular walk process. We thereby identified an increasing macrophage-mediated chemotactic potential ranking of biomaterials from glass over polytetrafluorethylene to titanium. To address long-term effects of biomaterial-resident macrophages on fibroblasts in a three-dimensional microenvironment, we further studied tissue remodeling by applying macrophage-material-conditioned medium on fibrous \({in}\) \({vitro}\) tissue models. A high correlation of the \({in}\) \({vitro}\) tissue model to state of the art \({in}\) \({vivo}\) study data was found. Titanium exhibited a significantly lower tissue remodeling capacity compared to polytetrafluorethylene. With this approach, we identified a material dependency of both chemotaxis and tissue remodeling processes, strengthening knowledge on their specific contribution to the foreign body reaction.}, language = {en} } @article{JannaschGaetznerWeigeletal.2017, author = {Jannasch, Maren and Gaetzner, Sabine and Weigel, Tobias and Walles, Heike and Schmitz, Tobias and Hansmann, Jan}, title = {A comparative multi-parametric in vitro model identifies the power of test conditions to predict the fibrotic tendency of a biomaterial}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, number = {1689}, doi = {10.1038/s41598-017-01584-9}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170908}, year = {2017}, abstract = {Despite growing effort to advance materials towards a low fibrotic progression, all implants elicit adverse tissue responses. Pre-clinical biomaterial assessment relies on animals testing, which can be complemented by in vitro tests to address the Russell and Burch's 3R aspect of reducing animal burden. However, a poor correlation between in vitro and in vivo biomaterial assessments confirms a need for suitable in vitro biomaterial tests. The aim of the study was to identify a test setting, which is predictive and might be time- and cost-efficient. We demonstrated how sensitive in vitro biomaterial assessment based on human primary macrophages depends on test conditions. Moreover, possible clinical scenarios such as lipopolysaccharide contamination, contact to autologous blood plasma, and presence of IL-4 in an immune niche influence the outcome of a biomaterial ranking. Nevertheless, by using glass, titanium, polytetrafluorethylene, silicone, and polyethylene representing a specific material-induced fibrotic response and by comparison to literature data, we were able to identify a test condition that provides a high correlation to state-of-the-art in vivo studies. Most important, biomaterial ranking obtained under native plasma test conditions showed a high predictive accuracy compared to in vivo assessments, strengthening a biomimetic three-dimensional in vitro test platform.}, language = {en} } @article{JakubietzNickelNeshkovaetal.2017, author = {Jakubietz, Rafael G. and Nickel, Aljoscha and Neshkova, Iva and Schmidt, Karsten and Gilbert, Fabian and Meffert, Rainer H. and Jakubietz, Michael G.}, title = {Long-term patency of twisted vascular pedicles in perforator-based propeller flaps}, series = {Plastic and Reconstructive Surgery Global Open}, volume = {5}, journal = {Plastic and Reconstructive Surgery Global Open}, number = {10}, doi = {10.1097/GOX.0000000000001544}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158870}, pages = {e1544}, year = {2017}, abstract = {Background: Propeller flaps require torsion of the vascular pedicle of up to 180 degrees. Contrary to free flaps, where the relevance of an intact vascular pedicle has been documented, little is known regarding twisted pedicles of propeller flaps. As secondary surgeries requiring undermining of the flap are common in the extremities, knowledge regarding the necessity to protect the pedicle is relevant. The aim of this study was a long-term evaluation of the patency of vascular pedicle of propeller flaps. Methods: In a retrospective clinical study, 22 patients who underwent soft-tissue reconstruction with a propeller flap were evaluated after 43 months. A Doppler probe was used to locate and evaluate the patency of the vascular pedicle of the flap. Results: The flaps were used in the lower extremity in 19 cases, on the trunk in 3 cases. All flaps had healed. In all patients, an intact vascular pedicle could be found. Flap size, source vessel, or infection could therefore not be linked to an increased risk of pedicle loss. Conclusions: The vascular pedicle of propeller flaps remains patent in the long term. This allows reelevation and undermining of the flap. We therefore recommend protecting the pedicle in all secondary cases to prevent later flap loss.}, language = {en} } @article{JakubietzJakubietzMeffertetal.2017, author = {Jakubietz, Rafael G. and Jakubietz, Michael G. and Meffert, Rainer H. and Schmidt, Karsten}, title = {Multiple-level replantation in elderly patients: risk versus benefit}, series = {Plastic and Reconstructive Surgery Global Open}, volume = {5}, journal = {Plastic and Reconstructive Surgery Global Open}, number = {4}, doi = {10.1097/GOX.0000000000001313}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158443}, pages = {e1313}, year = {2017}, abstract = {Multiple-level amputations of the upper extremity represent a surgical challenge generally only attempted in young patients. This case demonstrates a successful replantation in an elderly woman. The postoperative course was complicated by disseminated intravascular coagulopathy most likely due to inadequate resuscitation. Hand trauma is often underestimated in its general severity. Upper extremity amputations need to be handled similar to polytraumatized patients.}, language = {en} } @article{JakubietzMeffertSchmidtetal.2017, author = {Jakubietz, Michael G. and Meffert, Rainer H. and Schmidt, Karsten and Gruenert, Joerg G. and Jakubietz, Rafael G.}, title = {Acute A4 Pulley Reconstruction with a First Extensor Compartment Onlay Graft}, series = {Plastic and Reconstructive Surgery Global Open}, volume = {5}, journal = {Plastic and Reconstructive Surgery Global Open}, number = {6}, doi = {10.1097/GOX.0000000000001361}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158057}, pages = {e1361}, year = {2017}, abstract = {Background: The integrity of the flexor tendon pulley apparatus is crucial for unimpaired function of the digits. Although secondary reconstruction is an established procedure in multi-pulley injuries, acute reconstruction of isolated, closed pulley ruptures is a rare occurrence. There are 3 factors influencing the functional outcome of a reconstruction: gapping distance between tendon and bone (E-space), bulkiness of the reconstruction, and stability. As direct repair is rarely done, grafts are used to reinforce the pulley. An advantage of the first extensor retinaculum graft is the synovial coating providing the possibility to be used both as a direct graft with synovial coating or as an onlay graft after removal of the synovia when the native synovial layer is present. Methods: A graft from the first dorsal extensor compartment is used as an onlay graft to reinforce the sutured A4 pulley. This technique allows reconstruction of the original dimensions of the pulley system while stability is ensured by anchoring the onlay graft to the bony insertions of the pulley. Results: Anatomical reconstruction can be achieved with this method. The measured E-space remained 0 mm throughout the recovery, while the graft incorporated as a slim reinforcement of the pulley, displaying no bulkiness. Conclusions: The ideal reconstruction should provide synovial coating and sufficient strength with minimal bulk. Early reconstruction using an onlay graft offers these options. The native synovial lining is preserved and the graft is used to reinforce the pulley.}, language = {en} } @article{JakubietzJakubietzMeffertetal.2017, author = {Jakubietz, Michael G. and Jakubietz, Rafael G. and Meffert, Rainer H. and Schmidt, Karsten and Zahn, Robert K.}, title = {Biomechanical properties of first dorsal extensor compartment regarding adequacy as a bone-ligament-bone graft}, series = {Plastic and Reconstructive Surgery Global Open}, volume = {5}, journal = {Plastic and Reconstructive Surgery Global Open}, number = {7}, doi = {10.1097/GOX.0000000000001397}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-158851}, pages = {e1397}, year = {2017}, abstract = {Background: Bone-ligament-bone grafts for reconstruction of the scapholunate ligament are a valuable tool to prevent disease progression to carpal collapse. Locally available grafts do not require an additional donor site. The first extensor compartment was evaluated biomechanically regarding its possible use as an autograft. Methods: Twelve native fresh-frozen, human cadaver specimens were tested by applying axial tension in a Zwick Roell machine. Load to failure, transplant elongation, and bony avulsion were recorded. The load to failure was quantitated in newtons (N) and the displacement in length (millimeters). Parameters were set at distinct points as start of tension, 1 mm stretch and 1.5 mm dissociation, failure and complete tear, and were evaluated under magnified visual control. Although actual failure occurred at higher tension, functional failure was defined at a stretch of 1.5 mm. Results: Mean load at 1 mm elongation was 44.1 ± 28 N and at 1.5 mm elongation 57.5 ± 42 N. Failure occurred at 111 ± 83.1 N. No avulsion of the bony insertion was observed. Half the transplants failed in the central part of the ligament, while the rest failed near the insertion but not at the insertion itself. Analysis of tension strength displayed a wide range from 3.8 to 83.7 N/mm at a mean of 33.4 ± 28.4 N/mm. Conclusions: The biomechanical tensile properties of the first dorsal extensor compartment are similar to those of the dorsal part of the scapholunate ligament. A transplant with a larger bone stock and a longer ligament may display an advantage, as insertion is possible in the dorsal, easily accessible part of the carpal bones rather than in the ar{\^e}te-like region adjacent to the insertion of the scapholunate ligament. In this study, 1.5 mm lengthening of the bone-ligament-bone transplant was defined as clinical failure, as such elongation will cause severe gapping and is considered as failure of the transplant.}, language = {en} } @article{IckrathWagnerScherzadetal.2017, author = {Ickrath, Pascal and Wagner, Martin and Scherzad, Agmal and Gehrke, Thomas and Burghartz, Marc and Hagen, Rudolf and Radeloff, Katrin and Kleinsasser, Norbert and Hackenberg, Stephan}, title = {Time-Dependent Toxic and Genotoxic Effects of Zinc Oxide Nanoparticles after Long-Term and Repetitive Exposure to Human Mesenchymal Stem Cells}, series = {International Journal of Environmental Research and Public Health}, volume = {14}, journal = {International Journal of Environmental Research and Public Health}, number = {12}, doi = {10.3390/ijerph14121590}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-169932}, pages = {1590}, year = {2017}, abstract = {Zinc oxide nanoparticles (ZnO-NP) are widely spread in consumer products. Data about the toxicological characteristics of ZnO-NP is still under controversial discussion. The human skin is the most important organ concerning ZnO-NP exposure. Intact skin was demonstrated to be a sufficient barrier against NPs; however, defect skin may allow NP contact to proliferating cells. Within these cells, stem cells are the most important toxicological target for NPs. The aim of this study was to evaluate the genotoxic and cytotoxic effects of ZnO-NP at low-dose concentrations after long-term and repetitive exposure to human mesenchymal stem cells (hMSC). Cytotoxic effects of ZnO-NP were measured by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. Furthermore, genotoxicity was evaluated by the comet assay. For long-term observation over 6 weeks, transmission electron microscopy (TEM) was applied. The results of the study indicated cytotoxic effects of ZnO-NP beginning at high concentrations of 50 μg/mL and genotoxic effects in hMSC exposed to 1 and 10 μg/mL ZnO-NP. Repetitive exposure enhanced cyto- but not genotoxicity. Intracellular NP accumulation was observed up to 6 weeks. The results suggest cytotoxic and genotoxic potential of ZnO-NP. Even low doses of ZnO-NP may induce toxic effects as a result of repetitive exposure and long-term cellular accumulation. This data should be considered before using ZnO-NP on damaged skin.}, language = {en} } @article{Ibrahim2017, author = {Ibrahim, Amira}, title = {L'orientalisme fran{\c{c}}ais : d{\´e}finition et histoire}, series = {promptus - W{\"u}rzburger Beitr{\"a}ge zur Romanistik}, volume = {3}, journal = {promptus - W{\"u}rzburger Beitr{\"a}ge zur Romanistik}, issn = {2510-2613}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172899}, pages = {127-145}, year = {2017}, abstract = {The history of intellectual and cultural contact between West and East is very complicated and contradictory. A long time ago, eastern culture attracted the attention of many writers, orientalists and researchers, who headed east not only to study and describe the fascinating eastern civilizations, but also to analyze their different literary, historical and scientific aspects. The new mysterious but exciting environment inspired the orientalists to record and describe what they experienced regarding the architecture, the nature and the people. The attractive eastern natural views which are distinguishable from the monotonous western environment - especially after the industrial revolution - helped them to find new prospects. The East has been coming into focus since the middle ages, when the church campaigns started to study Islam as the prevalent religion in this area. The orientalist motivations were not only religious, but also followed economic, colonial and scientific agenda, which lead to a plethora of specialized research, stories, novels and analytical studies. A close look at the orientalists' works will provide us with an overview of eastern civilization. Therefore, their works are considered as a mirror reflecting their point of view to the east and the north of Africa, especially to pharaonic Egypt. The orientalists who travelled to the east and expressed their passion to this old civilization in their writings influenced the literary movement deeply. But what do we mean by the term orientalism? Edward Sa{\"i}d has defined this term in different ways. Sa{\"i}d presented and interpreted it as a way of thinking, a historical phenomenon. Defining orientalism has become a problem indeed, and now it is carrying a number of meanings which do not match. Therefore, the aim of the study is to bring into focus the most important definitions of the term orientalism from the late 17th to the mid-20th century.}, language = {fr} } @article{Huettner2017, author = {Huettner, Sabrina}, title = {Nelson Pressley. American Playwriting and the Anti-Political Prejudice: Twentieth- and Twenty-First Century Perspectives. Basingstoke: Palgrave Macmillan, 2014, ix + 185 pp, \$69.99.}, series = {Journal of Contemporary Drama in English}, volume = {5}, journal = {Journal of Contemporary Drama in English}, number = {1}, issn = {2195-0164}, doi = {10.1515/jcde-2017-0019}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-194210}, pages = {217-222}, year = {2017}, abstract = {No abstract available}, language = {en} } @article{HoppNolteStetteretal.2017, author = {Hopp, Sarah and Nolte, Marc W. and Stetter, Christian and Kleinschnitz, Christoph and Sir{\´e}n, Anna-Leena and Albert-Weissenberger, Christiane}, title = {Alleviation of secondary brain injury, posttraumatic inflammation, and brain edema formation by inhibition of factor XIIa}, series = {Journal of Neuroinflammation}, volume = {14}, journal = {Journal of Neuroinflammation}, number = {39}, doi = {10.1186/s12974-017-0815-8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157490}, year = {2017}, abstract = {Background: Traumatic brain injury (TBI) is a devastating neurological condition and a frequent cause of permanent disability. Posttraumatic inflammation and brain edema formation, two pathological key events contributing to secondary brain injury, are mediated by the contact-kinin system. Activation of this pathway in the plasma is triggered by activated factor XII. Hence, we set out to study in detail the influence of activated factor XII on the abovementioned pathophysiological features of TBI. Methods: Using a cortical cryogenic lesion model in mice, we investigated the impact of genetic deficiency of factor XII and inhibition of activated factor XII with a single bolus injection of recombinant human albumin-fused Infestin-4 on the release of bradykinin, the brain lesion size, and contact-kinin system-dependent pathological events. We determined protein levels of bradykinin, intracellular adhesion molecule-1, CC-chemokine ligand 2, and interleukin-1β by enzyme-linked immunosorbent assays and mRNA levels of genes related to inflammation by quantitative real-time PCR. Brain lesion size was determined by tetrazolium chloride staining. Furthermore, protein levels of the tight junction protein occludin, integrity of the blood-brain barrier, and brain water content were assessed by Western blot analysis, extravasated Evans Blue dye, and the wet weight-dry weight method, respectively. Infiltration of neutrophils and microglia/activated macrophages into the injured brain lesions was quantified by immunohistological stainings. Results: We show that both genetic deficiency of factor XII and inhibition of activated factor XII in mice diminish brain injury-induced bradykinin release by the contact-kinin system and minimize brain lesion size, blood-brain barrier leakage, brain edema formation, and inflammation in our brain injury model. Conclusions: Stimulation of bradykinin release by activated factor XII probably plays a prominent role in expanding secondary brain damage by promoting brain edema formation and inflammation. Pharmacological blocking of activated factor XII could be a useful therapeutic principle in the treatment of TBI-associated pathologic processes by alleviating posttraumatic inflammation and brain edema formation.}, language = {en} } @article{HofmannKellerWalteretal.2017, author = {Hofmann, Ulf Krister and Keller, Ramona Luise and Walter, Christian and Mittag, Falk}, title = {Predictability of the effects of facet joint infiltration in the degenerate lumbar spine when assessing MRI scans}, series = {Journal of Orthopaedic Surgery and Research}, volume = {12}, journal = {Journal of Orthopaedic Surgery and Research}, doi = {10.1186/s13018-017-0685-x}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-173027}, year = {2017}, abstract = {Background Imaging results are frequently considered as hallmarks of disease by spine surgeons to plan their future treatment strategy. Numerous classification systems have been proposed to quantify or grade lumbar magnetic resonance imaging (MRI) scans and thus objectify imaging findings. The clinical impact of the measured parameters remains, however, unclear. To evaluate the pathological significance of imaging findings in patients with multisegmental degenerative findings, clinicians can perform image-guided local infiltrations to target defined areas such as the facet joints. The aim of the present retrospective study was to evaluate the correlation of MRI facet joint degeneration and spinal stenosis measurements with improvement obtained by image-guided intraarticular facet joint infiltration. Methods Fifty MRI scans of patients with chronic lumbar back pain were graded radiologically using a wide range of classification and measurement systems. The reported effect of facet joint injections at the site was recorded, and a comparative analysis performed. Results When we allocated patients according to their reported pain relief, 27 showed no improvement (0-30\%), 16 reported good improvement (31-75\%) and 7 reported excellent improvement (> 75\%). MRI features assessed in this study did, however, not show any relevant correlation with reported pain after facet joint infiltration: Values for Kendall's tau ranged from \(\tau\) = - 0.190 for neuroforaminal stenosis grading as suggested by Lee, to \(\tau\) = 0.133 for posterior disc height as proposed by Hasegawa. Conclusion Despite the trend in evidence-based medicine to provide medical algorithms, our findings underline the continuing need for individualised spine care that, along with imaging techniques or targeted infiltrations, includes diagnostic dimensions such as good patient history and clinical examination to formulate a diagnosis. Trial registration ClinicalTrials.gov, NCT03308149, retrospectively registered October 2017}, language = {en} } @article{HofmannBoettgerRangeetal.2017, author = {Hofmann, Sigrun Ruth and B{\"o}ttger, Fanny and Range, Ursula and L{\"u}ck, Christian and Morbach, Henner and Girschick, Hermann Joseph and Suttorp, Meinolf and Hedrich, Christian Michael}, title = {Serum interleukin-6 and CCL11/eotaxin may be suitable biomarkers for the diagnosis of chronic nonbacterial osteomyelitis}, series = {Frontiers in Pediatrics}, volume = {5}, journal = {Frontiers in Pediatrics}, doi = {10.3389/fped.2017.00256}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-172744}, year = {2017}, abstract = {Objectives: Chronic recurrent multifocal osteomyelitis (CRMO), the most severe form of chronic nonbacterial osteomyelitis (CNO), is an autoinflammatory bone disorder. In the absence of diagnostic criteria or biomarkers, CNO/CRMO remains a diagnosis of exclusion. The aim of this study was to identify biomarkers for diagnosing multifocal disease (CRMO). Study design: Sera from 71 pediatric CRMO patients, 11 patients with osteoarticular infections, 62 patients with juvenile idiopathic arthritis (JIA), 7 patients with para-infectious or reactive arthritis, and 43 patients with acute leukemia or lymphoma, as well as 59 healthy individuals were collected. Multiplex analysis of 18 inflammation- and/or bone remodeling-associated serum proteins was performed. Statistical analysis included univariate ANOVA, discriminant analysis, univariate receiver operating characteristic (ROC) analysis, and logistic regression analyses. Results: For 14 of 18 blood serum proteins, significant differences were determined between CRMO patients, at least one alternative diagnosis, or healthy controls. Multi-component discriminant analysis delivered five biomarkers (IL-6, CCL11/eotaxin, CCL5/RANTES, collagen Iα, sIL-2R) for the diagnosis of CRMO. ROC analysis allowed further reduction to a core set of 2 biomarkers (CCL11/eotaxin, IL-6) that are sufficient to discern between CRMO, healthy controls, and alternative diagnoses. Conclusion: Serum biomarkers CCL11/eotaxin and IL-6 differentiate between patients with CRMO, healthy controls, and alternative diagnoses (leukemia and lymphoma, osteoarticular infections, para-infectious arthritis, and JIA). Easily accessible biomarkers may aid in diagnosing CRMO. Further studies testing biomarkers in larger unrelated cohorts are warranted.}, language = {en} } @article{HofmannKarlSommeretal.2017, author = {Hofmann, Lukas and Karl, Franziska and Sommer, Claudia and {\"U}{\c{c}}eyler, Nurcan}, title = {Affective and cognitive behavior in the alpha-galactosidase A deficient mouse model of Fabry disease}, series = {PLoS ONE}, volume = {12}, journal = {PLoS ONE}, number = {6}, doi = {10.1371/journal.pone.0180601}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-170745}, pages = {e0180601}, year = {2017}, abstract = {Fabry disease is an X-linked inherited lysosomal storage disorder with intracellular accumulation of globotriaosylceramide (Gb3) due to α-galactosidase A (α-Gal A) deficiency. Fabry patients frequently report of anxiety, depression, and impaired cognitive function. We characterized affective and cognitive phenotype of male mice with α-Gal A deficiency (Fabry KO) and compared results with those of age-matched male wildtype (WT) littermates. Young (3 months) and old (≥ 18 months) mice were tested in the na{\"i}ve state and after i.pl. injection of complete Freund`s adjuvant (CFA) as an inflammatory pain model. We used the elevated plus maze (EPM), the light-dark box (LDB) and the open field test (OF) to investigate anxiety-like behavior. The forced swim test (FST) and Morris water maze (MWM) were applied to assess depressive-like and learning behavior. The EPM test revealed no intergroup difference for anxiety-like behavior in na{\"i}ve young and old Fabry KO mice compared to WT littermates, except for longer time spent in open arms of the EPM for young WT mice compared to young Fabry KO mice (p<0.05). After CFA injection, young Fabry KO mice showed increased anxiety-like behavior compared to young WT littermates (p<0.05) and na{\"i}ve young Fabry KO mice (p<0.05) in the EPM as reflected by shorter time spent in EPM open arms. There were no relevant differences in the LDB and the OF test, except for longer time spent in the center zone of the OF by young WT mice compared to young Fabry KO mice (p<0.05). Complementary to this, depression-like and learning behavior were not different between genotypes and age-groups, except for the expectedly lower memory performance in older age-groups compared to young mice. Our results indicate that genetic influences on affective and cognitive symptoms in FD may be of subordinate relevance, drawing attention to potential influences of environmental and epigenetic factors.}, language = {en} } @article{HocheSchmittHumeniuketal.2017, author = {Hoche, Joscha and Schmitt, Hans-Christian and Humeniuk, Alexander and Fischer, Ingo and Mitrić, Roland and R{\"o}hr, Merle I. S.}, title = {The mechanism of excimer formation: an experimental and theoretical study on the pyrene dimer}, series = {Physical Chemistry Chemical Physics}, volume = {19}, journal = {Physical Chemistry Chemical Physics}, number = {36}, doi = {10.1039/C7CP03990E}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159514}, pages = {25002-25015}, year = {2017}, abstract = {The understanding of excimer formation in organic materials is of fundamental importance, since excimers profoundly influence their functional performance in applications such as light-harvesting, photovoltaics or organic electronics. We present a joint experimental and theoretical study of the ultrafast dynamics of excimer formation in the pyrene dimer in a supersonic jet, which is the archetype of an excimer forming system. We perform simulations of the nonadiabatic photodynamics in the frame of TDDFT that reveal two distinct excimer formation pathways in the gas-phase dimer. The first pathway involves local excited state relaxation close to the initial Franck-Condon geometry that is characterized by a strong excitation of the stacking coordinate exhibiting damped oscillations with a period of 350 fs that persist for several picoseconds. The second excimer forming pathway involves large amplitude oscillations along the parallel shift coordinate with a period of ≈900 fs that after intramolecular vibrational energy redistribution leads to the formation of a perfectly stacked dimer. The electronic relaxation within the excitonic manifold is mediated by the presence of intermolecular conical intersections formed between fully delocalized excitonic states. Such conical intersections may generally arise in stacked π-conjugated aggregates due to the interplay between the long-range and short-range electronic coupling. The simulations are supported by picosecond photoionization experiments in a supersonic jet that provide a time-constant for the excimer formation of around 6-7 ps, in good agreement with theory. Finally, in order to explore how the crystal environment influences the excimer formation dynamics we perform large scale QM/MM nonadiabatic dynamics simulations on a pyrene crystal in the framework of the long-range corrected tight-binding TDDFT. In contrast to the isolated dimer, the excimer formation in the crystal follows a single reaction pathway in which the initially excited parallel slip motion is strongly damped by the interaction with the surrounding molecules leading to the slow excimer stabilization on a picosecond time scale.}, language = {en} } @article{HillmannWiedmannRueckeretal.2017, author = {Hillmann, Steffi and Wiedmann, Silke and R{\"u}cker, Viktoria and Berger, Klaus and Nabavi, Darius and Bruder, Ingo and Koennecke, Hans-Christian and Seidel, G{\"u}nter and Misselwitz, Bj{\"o}rn and Janssen, Alfred and Burmeister, Christoph and Matthis, Christine and Busse, Otto and Hermanek, Peter and Heuschmann, Peter Ulrich}, title = {Stroke unit care in Germany: the German stroke registers study group (ADSR)}, series = {BMC Neurology}, volume = {17}, journal = {BMC Neurology}, number = {49}, doi = {10.1186/s12883-017-0819-0}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-159447}, year = {2017}, abstract = {Background: Factors influencing access to stroke unit (SU) care and data on quality of SU care in Germany are scarce. We investigated characteristics of patients directly admitted to a SU as well as patient-related and structural factors influencing adherence to predefined indicators of quality of acute stroke care across hospitals providing SU care. Methods: Data were derived from the German Stroke Registers Study Group (ADSR), a voluntary network of 9 regional registers for monitoring quality of acute stroke care in Germany. Multivariable logistic regression analyses were performed to investigate characteristics influencing direct admission to SU. Generalized Linear Mixed Models (GLMM) were used to estimate the influence of structural hospital characteristics (percentage of patients admitted to SU, year of SU-certification, and number of stroke and TIA patients treated per year) on adherence to predefined quality indicators. Results: In 2012 180,887 patients were treated in 255 hospitals providing certified SU care participating within the ADSR were included in the analysis; of those 82.4\% were directly admitted to a SU. Ischemic stroke patients without disturbances of consciousness (p < .0001), an interval onset to admission time ≤3 h (p < .0001), and weekend admission (p < .0001) were more likely to be directly admitted to a SU. A higher proportion of quality indicators within predefined target ranges were achieved in hospitals with a higher proportion of SU admission (p = 0.0002). Quality of stroke care could be maintained even if certification was several years ago. Conclusions: Differences in demographical and clinical characteristics regarding the probability of SU admission were observed. The influence of structural characteristics on adherence to evidence-based quality indicators was low.}, language = {en} }