@article{LudwigSaemannAlexanderetal.2013, author = {Ludwig, K. U. and S{\"a}mann, P. and Alexander, M. and Becker, J. and Bruder, J. and Moll, K. and Spieler, D. and Czisch, M. and Warnke, A. and Docherty, S. J. and Davis, O. S. P. and Plomin, R. and N{\"o}then, M. M. and Landerl, K. and M{\"u}ller-Myhsok, B. and Hoffmann, P. and Schumacher, J. and Schulte-K{\"o}rne, G. and Czamara, D.}, title = {A common variant in Myosin-18B contributes to mathematical abilities in children with dyslexia and intraparietal sulcus variability in adults}, series = {Translational Psychiatry}, volume = {3}, journal = {Translational Psychiatry}, number = {e229}, doi = {10.1038/tp.2012.148}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-131513}, year = {2013}, abstract = {The ability to perform mathematical tasks is required in everyday life. Although heritability estimates suggest a genetic contribution, no previous study has conclusively identified a genetic risk variant for mathematical performance. Research has shown that the prevalence of mathematical disabilities is increased in children with dyslexia. We therefore correlated genome-wide data of 200 German children with spelling disability, with available quantitative data on mathematic ability. Replication of the top findings in additional dyslexia samples revealed that rs133885 was a genome-wide significant marker for mathematical abilities\((P_{comb}=7.71 x 10^{-10}, n=699)\), with an effect size of 4.87\%. This association was also found in a sample from the general population (P=0.048, n=1080), albeit with a lower effect size. The identified variant encodes an amino-acid substitution in MYO18B, a protein with as yet unknown functions in the brain. As areas of the parietal cortex, in particular the intraparietal sulcus (IPS), are involved in numerical processing in humans, we investigated whether rs133885 was associated with IPS morphology using structural magnetic resonance imaging data from 79 neuropsychiatrically healthy adults. Carriers of the MYO18B risk-genotype displayed a significantly lower depth of the right IPS. This validates the identified association between rs133885 and mathematical disability at the level of a specific intermediate phenotype.}, language = {en} } @article{BousquetAntoBachertetal.2021, author = {Bousquet, Jean and Anto, Josep M. and Bachert, Claus and Haahtela, Tari and Zuberbier, Torsten and Czarlewski, Wienczyslawa and Bedbrook, Anna and Bosnic-Anticevich, Sinthia and Walter Canonica, G. and Cardona, Victoria and Costa, Elisio and Cruz, Alvaro A. and Erhola, Marina and Fokkens, Wytske J. and Fonseca, Joao A. and Illario, Maddalena and Ivancevich, Juan-Carlos and Jutel, Marek and Klimek, Ludger and Kuna, Piotr and Kvedariene, Violeta and Le, LTT and Larenas-Linnemann, D{\´e}sir{\´e}e E. and Laune, Daniel and Louren{\c{c}}o, Olga M. and Mel{\´e}n, Erik and Mullol, Joaquim and Niedoszytko, Marek and Odemyr, Mika{\"e}la and Okamoto, Yoshitaka and Papadopoulos, Nikos G. and Patella, Vincenzo and Pfaar, Oliver and Pham-Thi, Nh{\^a}n and Rolland, Christine and Samolinski, Boleslaw and Sheikh, Aziz and Sofiev, Mikhail and Suppli Ulrik, Charlotte and Todo-Bom, Ana and Tomazic, Peter-Valentin and Toppila-Salmi, Sanna and Tsiligianni, Ioanna and Valiulis, Arunas and Valovirta, Erkka and Ventura, Maria-Teresa and Walker, Samantha and Williams, Sian and Yorgancioglu, Arzu and Agache, Ioana and Akdis, Cezmi A. and Almeida, Rute and Ansotegui, Ignacio J. and Annesi-Maesano, Isabella and Arnavielhe, Sylvie and Basaga{\~n}a, Xavier and D. Bateman, Eric and B{\´e}dard, Annabelle and Bedolla-Barajas, Martin and Becker, Sven and Bennoor, Kazi S. and Benveniste, Samuel and Bergmann, Karl C. and Bewick, Michael and Bialek, Slawomir and E. Billo, Nils and Bindslev-Jensen, Carsten and Bjermer, Leif and Blain, Hubert and Bonini, Matteo and Bonniaud, Philippe and Bosse, Isabelle and Bouchard, Jacques and Boulet, Louis-Philippe and Bourret, Rodolphe and Boussery, Koen and Braido, Fluvio and Briedis, Vitalis and Briggs, Andrew and Brightling, Christopher E. and Brozek, Jan and Brusselle, Guy and Brussino, Luisa and Buhl, Roland and Buonaiuto, Roland and Calderon, Moises A. and Camargos, Paulo and Camuzat, Thierry and Caraballo, Luis and Carriazo, Ana-Maria and Carr, Warner and Cartier, Christine and Casale, Thomas and Cecchi, Lorenzo and Cepeda Sarabia, Alfonso M. and H. Chavannes, Niels and Chkhartishvili, Ekaterine and Chu, Derek K. and Cingi, Cemal and Correia de Sousa, Jaime and Costa, David J. and Courbis, Anne-Lise and Custovic, Adnan and Cvetkosvki, Biljana and D'Amato, Gennaro and da Silva, Jane and Dantas, Carina and Dokic, Dejan and Dauvilliers, Yves and De Feo, Giulia and De Vries, Govert and Devillier, Philippe and Di Capua, Stefania and Dray, Gerard and Dubakiene, Ruta and Durham, Stephen R. and Dykewicz, Mark and Ebisawa, Motohiro and Gaga, Mina and El-Gamal, Yehia and Heffler, Enrico and Emuzyte, Regina and Farrell, John and Fauquert, Jean-Luc and Fiocchi, Alessandro and Fink-Wagner, Antje and Fontaine, Jean-Fran{\c{c}}ois and Fuentes Perez, Jos{\´e} M. and Gemicioğlu, Bilun and Gamkrelidze, Amiran and Garcia-Aymerich, Judith and Gevaert, Philippe and Gomez, Ren{\´e} Maximiliano and Gonz{\´a}lez Diaz, Sandra and Gotua, Maia and Guldemond, Nick A. and Guzm{\´a}n, Maria-Antonieta and Hajjam, Jawad and Huerta Villalobos, Yunuen R. and Humbert, Marc and Iaccarino, Guido and Ierodiakonou, Despo and Iinuma, Tomohisa and Jassem, Ewa and Joos, Guy and Jung, Ki-Suck and Kaidashev, Igor and Kalayci, Omer and Kardas, Przemyslaw and Keil, Thomas and Khaitov, Musa and Khaltaev, Nikolai and Kleine-Tebbe, Jorg and Kouznetsov, Rostislav and Kowalski, Marek L. and Kritikos, Vicky and Kull, Inger and La Grutta, Stefania and Leonardini, Lisa and Ljungberg, Henrik and Lieberman, Philip and Lipworth, Brian and Lodrup Carlsen, Karin C. and Lopes-Pereira, Catarina and Loureiro, Claudia C. and Louis, Renaud and Mair, Alpana and Mahboub, Bassam and Makris, Micha{\"e}l and Malva, Joao and Manning, Patrick and Marshall, Gailen D. and Masjedi, Mohamed R. and Maspero, Jorge F. and Carreiro-Martins, Pedro and Makela, Mika and Mathieu-Dupas, Eve and Maurer, Marcus and De Manuel Keenoy, Esteban and Melo-Gomes, Elisabete and Meltzer, Eli O. and Menditto, Enrica and Mercier, Jacques and Micheli, Yann and Miculinic, Neven and Mihaltan, Florin and Milenkovic, Branislava and Mitsias, Dimitirios I. and Moda, Giuliana and Mogica-Martinez, Maria-Dolores and Mohammad, Yousser and Montefort, Steve and Monti, Ricardo and Morais-Almeida, Mario and M{\"o}sges, Ralph and M{\"u}nter, Lars and Muraro, Antonella and Murray, Ruth and Naclerio, Robert and Napoli, Luigi and Namazova-Baranova, Leyla and Neffen, Hugo and Nekam, Kristoff and Neou, Angelo and Nordlund, Bj{\"o}rn and Novellino, Ettore and Nyembue, Dieudonn{\´e} and O'Hehir, Robyn and Ohta, Ken and Okubo, Kimi and Onorato, Gabrielle L. and Orlando, Valentina and Ouedraogo, Solange and Palamarchuk, Julia and Pali-Sch{\"o}ll, Isabella and Panzner, Peter and Park, Hae-Sim and Passalacqua, Gianni and P{\´e}pin, Jean-Louis and Paulino, Ema and Pawankar, Ruby and Phillips, Jim and Picard, Robert and Pinnock, Hilary and Plavec, Davor and Popov, Todor A. and Portejoie, Fabienne and Price, David and Prokopakis, Emmanuel P. and Psarros, Fotis and Pugin, Benoit and Puggioni, Francesca and Quinones-Delgado, Pablo and Raciborski, Filip and Rajabian-S{\"o}derlund, Rojin and Regateiro, Frederico S. and Reitsma, Sietze and Rivero-Yeverino, Daniela and Roberts, Graham and Roche, Nicolas and Rodriguez-Zagal, Erendira and Rolland, Christine and Roller-Wirnsberger, Regina E. and Rosario, Nelson and Romano, Antonino and Rottem, Menachem and Ryan, Dermot and Salim{\"a}ki, Johanna and Sanchez-Borges, Mario M. and Sastre, Joaquin and Scadding, Glenis K. and Scheire, Sophie and Schmid-Grendelmeier, Peter and Sch{\"u}nemann, Holger J. and Sarquis Serpa, Faradiba and Shamji, Mohamed and Sisul, Juan-Carlos and Sofiev, Mikhail and Sol{\´e}, Dirceu and Somekh, David and Sooronbaev, Talant and Sova, Milan and Spertini, Fran{\c{c}}ois and Spranger, Otto and Stellato, Cristiana and Stelmach, Rafael and Thibaudon, Michel and To, Teresa and Toumi, Mondher and Usmani, Omar and Valero, Antonio A. and Valenta, Rudolph and Valentin-Rostan, Marylin and Pereira, Marilyn Urrutia and van der Kleij, Rianne and Van Eerd, Michiel and Vandenplas, Olivier and Vasankari, Tuula and Vaz Carneiro, Antonio and Vezzani, Giorgio and Viart, Fr{\´e}d{\´e}ric and Viegi, Giovanni and Wallace, Dana and Wagenmann, Martin and Wang, De Yun and Waserman, Susan and Wickman, Magnus and Williams, Dennis M. and Wong, Gary and Wroczynski, Piotr and Yiallouros, Panayiotis K. and Yusuf, Osman M. and Zar, Heather J. and Zeng, St{\´e}phane and Zernotti, Mario E. and Zhang, Luo and Shan Zhong, Nan and Zidarn, Mihaela}, title = {ARIA digital anamorphosis: Digital transformation of health and care in airway diseases from research to practice}, series = {Allergy}, volume = {76}, journal = {Allergy}, number = {1}, doi = {10.1111/all.14422}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-228339}, pages = {168 -- 190}, year = {2021}, abstract = {Digital anamorphosis is used to define a distorted image of health and care that may be viewed correctly using digital tools and strategies. MASK digital anamorphosis represents the process used by MASK to develop the digital transformation of health and care in rhinitis. It strengthens the ARIA change management strategy in the prevention and management of airway disease. The MASK strategy is based on validated digital tools. Using the MASK digital tool and the CARAT online enhanced clinical framework, solutions for practical steps of digital enhancement of care are proposed.}, language = {en} } @article{ZirkelCecilSchaeferetal.2012, author = {Zirkel, J. and Cecil, A. and Sch{\"a}fer, F. and Rahlfs, S. and Ouedraogo, A. and Xiao, K. and Sawadogo, S. and Coulibaly, B. and Becker, K. and Dandekar, T.}, title = {Analyzing Thiol-Dependent Redox Networks in the Presence of Methylene Blue and Other Antimalarial Agents with RT-PCR-Supported in silico Modeling}, series = {Bioinformatics and Biology Insights}, volume = {6}, journal = {Bioinformatics and Biology Insights}, doi = {10.4137/BBI.S10193}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-123751}, pages = {287-302}, year = {2012}, abstract = {BACKGROUND: In the face of growing resistance in malaria parasites to drugs, pharmacological combination therapies are important. There is accumulating evidence that methylene blue (MB) is an effective drug against malaria. Here we explore the biological effects of both MB alone and in combination therapy using modeling and experimental data. RESULTS: We built a model of the central metabolic pathways in P. falciparum. Metabolic flux modes and their changes under MB were calculated by integrating experimental data (RT-PCR data on mRNAs for redox enzymes) as constraints and results from the YANA software package for metabolic pathway calculations. Several different lines of MB attack on Plasmodium redox defense were identified by analysis of the network effects. Next, chloroquine resistance based on pfmdr/and pfcrt transporters, as well as pyrimethamine/sulfadoxine resistance (by mutations in DHF/DHPS), were modeled in silico. Further modeling shows that MB has a favorable synergism on antimalarial network effects with these commonly used antimalarial drugs. CONCLUSIONS: Theoretical and experimental results support that methylene blue should, because of its resistance-breaking potential, be further tested as a key component in drug combination therapy efforts in holoendemic areas.}, language = {en} } @article{HerrmannHappMoellmannetal.1993, author = {Herrmann, K. H. and Happ, M. and M{\"o}llmann, K.-P. and Tomm, J. W. and Becker, Charles R. and Kraus, M. M. and Yuan, S. and Landwehr, G.}, title = {A new model for the absorption coefficient of narrow gap (Hg,Cd)Te that simultaneously considers band tails and band filling}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-37894}, year = {1993}, abstract = {A semiempirical model is presented that correlates the broadening of the absorption edge with both transitions below the energy gap and with transitions by the Kane band model. This model correctly fits both the absorption and luminescence spectra of narrow-gap (Hg,Cd)Te samples that have been grown by the traveling heater method as well as by molecular-beam epitaxy. The accuracy of the band-gap determination is enhanced by this model.}, language = {en} } @article{BluemelLinkeHerrmannetal.2016, author = {Bluemel, Christina and Linke, Fraenze and Herrmann, Ken and Simunovic, Iva and Eiber, Matthias and Kestler, Christian and Buck, Andreas K. and Schirbel, Andreas and Bley, Thorsten A. and Wester, Hans-Juergen and Vergho, Daniel and Becker, Axel}, title = {Impact of \(^{68}\)Ga-PSMA PET/CT on salvage radiotherapy planning in patients with prostate cancer and persisting PSA values or biochemical relapse after prostatectomy}, series = {EJNMMI Research}, volume = {6}, journal = {EJNMMI Research}, number = {78}, doi = {10.1186/s13550-016-0233-4}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-147798}, year = {2016}, abstract = {Background Salvage radiotherapy (SRT) is clinically established in prostate cancer (PC) patients with PSA persistence or biochemical relapse (BCR) after prior radical surgery. PET/CT imaging prior to SRT may be performed to localize disease recurrence. The recently introduced \(^{68}\)Ga-PSMA outperforms other PET tracers for detection of recurrence and is therefore expected also to impact radiation planning. Forty-five patients with PSA persistence (16 pts) or BCR (29 pts) after prior prostatectomy, scheduled to undergo SRT of the prostate bed, underwent \(^{68}\)Ga-PSMA PET/CT. The median PSA level was 0.67 ng/ml. The impact of \(^{68}\)Ga-PSMA PET/CT on the treatment decision was assessed. Patients with oligometastatic (≤5 lesions) PC underwent radiotherapy (RT), with the extent of the RT area and dose escalation being based on PET positivity. Results Suspicious lesions were detected in 24/45 (53.3 \%) patients. In 62.5 \% of patients, lesions were only detected by 68Ga-PSMA PET. Treatment was changed in 19/45 (42.2 \%) patients, e.g., extending SRT to metastases (9/19), administering dose escalation in patients with morphological local recurrence (6/19), or replacing SRT by systemic therapy (2/19). 38/45 (84.4 \%) followed the treatment recommendation, with data on clinical follow-up being available in 21 patients treated with SRT. All but one showed biochemical response (mean PSA decline 78 ± 19 \%) within a mean follow-up of 8.12 ± 5.23 months. Conclusions \(^{68}\)Ga-PSMA PET/CT impacts treatment planning in more than 40 \% of patients scheduled to undergo SRT. Future prospective studies are needed to confirm this significant therapeutic impact on patients prior to SRT.}, language = {en} } @article{SargeCammengaBeckeretal.1988, author = {Sarge, S. and Cammenga, H. K. and Becker, B. and Rohr-Aehle, R. and Tacke, Reinhold}, title = {Energetic and kinetic investigation of thermally induced molecular rearrangements of esters of (hydroxymethyl)hydridosilanes by DSC}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63850}, year = {1988}, abstract = {No abstract available}, subject = {Anorganische Chemie}, language = {en} } @article{KleinschnitzGrundWingleretal.2010, author = {Kleinschnitz, Christoph and Grund, Henrike and Wingler, Kirstin and Armitage, Melanie E. and Jones, Emma and Mittal, Manish and Barit, David and Schwarz, Tobias and Geis, Christian and Kraft, Peter and Barthel, Konstanze and Schuhmann, Michael K. and Herrmann, Alexander M. and Meuth, Sven G. and Stoll, Guido and Meurer, Sabine and Schrewe, Anja and Becker, Lore and Gailus-Durner, Valerie and Fuchs, Helmut and Klopstock, Thomas and de Angelis, Martin Hrabe and Jandeleit-Dahm, Karin and Shah, Ajay M. and Weissmann, Norbert and Schmidt, Harald H. H. W.}, title = {Post-Stroke Inhibition of Induced NADPH Oxidase Type 4 Prevents Oxidative Stress and Neurodegeneration}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-68416}, year = {2010}, abstract = {Ischemic stroke is the second leading cause of death worldwide. Only one moderately effective therapy exists, albeit with contraindications that exclude 90\% of the patients. This medical need contrasts with a high failure rate of more than 1,000 pre-clinical drug candidates for stroke therapies. Thus, there is a need for translatable mechanisms of neuroprotection and more rigid thresholds of relevance in pre-clinical stroke models. One such candidate mechanism is oxidative stress. However, antioxidant approaches have failed in clinical trials, and the significant sources of oxidative stress in stroke are unknown. We here identify NADPH oxidase type 4 (NOX4) as a major source of oxidative stress and an effective therapeutic target in acute stroke. Upon ischemia, NOX4 was induced in human and mouse brain. Mice deficient in NOX4 (Nox42/2) of either sex, but not those deficient for NOX1 or NOX2, were largely protected from oxidative stress, blood-brain-barrier leakage, and neuronal apoptosis, after both transient and permanent cerebral ischemia. This effect was independent of age, as elderly mice were equally protected. Restoration of oxidative stress reversed the stroke-protective phenotype in Nox42/2 mice. Application of the only validated low-molecular-weight pharmacological NADPH oxidase inhibitor, VAS2870, several hours after ischemia was as protective as deleting NOX4. The extent of neuroprotection was exceptional, resulting in significantly improved long-term neurological functions and reduced mortality. NOX4 therefore represents a major source of oxidative stress and novel class of drug target for stroke therapy.}, subject = {Schlaganfall}, language = {en} } @article{TackeWiesenbergerBeckeretal.1992, author = {Tacke, Reinhold and Wiesenberger, F. and Becker, B. and Rohr-Aehle, R. and Schneider, P. B. and Ulbrich, U. and Sarge, S. M. and Cammenga, H. K. and Koslowski, T. and Niessen, W. von}, title = {Ester von (Hydroxymethyl)diorganylsilanen: Synthese und thermisch induzierte Umlagerung}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-64188}, year = {1992}, abstract = {Twenty silanes of the type R\(^1\)R\(^2\)Si(H)CH\(_2\)OR\(^3\) (A) were syn- and entropy of activation) of these reactions were studied by thesized {R\(^1\), R\(^2\) = Me, Ph, 1-naphthyl, PhCH\(_2\), Me\(_3\)SiCH\(_2\); OR\(^3\) means of d{\"u}ferential scanning calorimetry (DSC). In addition, = OC(O)Me, OC(O)Ph, OC(O)CF\(_3\) , OS(0)\(_2\)CF\(_3\), OP(O)Ph\(_2\), the kinetics of all reactions were investigated by 1H-NMR OC(O)Cl, and studied for their thermal behaviour. The silanes spectroscopy. The transition state of the rearrangement was A undergo a thermally induced rearrangement to give the investigated by an ab initio study based on the model comcorresponding silanes R\(^1\)R\(^2\)Si(OR\(^3\))Me (B). For compounds with pound H\(_3\)SiCH\(_2\)OC(O)H (-> MeH\(_2\)SiOC(O)H]. The theoretical OR3 = OC(O)Cl, an additional decarboxylation takes place to data and the experimentally obtained energetic and kinetic yield the chlorosilanes R1R2Si(Cl)Me. Except for the deriva- data are discussed in terms of mechanistic aspects of the retives with OR\(^3\) = OC(O)Cl, the energetic (reaction enthalpy) arrangement reaction A -> B. and kinetic data (reaction order, frequency factor, enthalpy ...}, subject = {Anorganische Chemie}, language = {de} } @article{WuBeckerWaagetal.1993, author = {Wu, Y. S. and Becker, Charles R. and Waag, A. and von Schierstedt, K. and Bicknell-Tassius, R. N. and Landwehr, G.}, title = {Surface sublimation of zinc blende CdTe}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-37829}, year = {1993}, abstract = {The surface sublimation of Cd and Te atoms from the zinc blende (111)A CdTe surface has been investigated in detail by reflection high energy electron diffraction and x-ray photoelectron spectroscopy. These experiments verify that Te is much easier to evaporate than Cd. The experimental value for the Te activation energy from a Te stabilized (111)A CdTe surface is 1.41 ±0.1O eV, which is apparently inconsistent with recent theoretical results.}, language = {en} } @article{SchikoraHausleitnerEinfeldtetal.1994, author = {Schikora, D. and Hausleitner, H. and Einfeldt, S. and Becker, Charles R. and Widmer, T. and Giftige, C. and Lischka, K. and von Ortenburg, M. and Landwehr, G.}, title = {Epitaxial overgrowth of II-VI compounds on patterned substrates}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-37985}, year = {1994}, abstract = {The selected area epitaxial overgrowth of narrow gap HgTe as well as wide gap CdTe and ZnTe on CdTe/GaAs substrates, which had been structured by dry etching techniques, has been investigated. A plasma etching process using a barrel reactor with CH\(_4\)-CH\(_2\) gases has been employed to prepare stripes with a width of about 1 μm with anisotropic as well as isotropic etching profiles. It has been found, that the selected area HgTe overgrowth takes place with a high local selectivity to the low index planes of the patterned surface. In contrast, the selected area overgrowth of the wide gap CdTe and ZnTe is controlled by anisotropic growth kinetics provided that the substrate temperature is not lower than 220°C and the starting surface consists of well developed low index crystallographic planes.}, language = {en} } @article{KlitzingBecker1976, author = {Klitzing, K. von and Becker, Charles R.}, title = {Far infrared photoconductivity of residual acceptors in pure tellurium}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31278}, year = {1976}, abstract = {The photoconductivity of both undeformed and deformed Te samples has been investigated at liquid He temperature by means of a Fourier spectrometer. Three peaks were usually found in the spectra of undeformed samples at 11, 24 and 46 cm\(^{-1}\). These are shown to be due to three different chemical impurities. The deformed samples are characterized by additional structure at higher frequencies.}, language = {en} } @misc{UnkelbachBeckerKoehleretal.1973, author = {Unkelbach, K. H. and Becker, Charles R. and K{\"o}hler, H. and Middendorff, A. V.}, title = {Optical Phonons of Bi\(_2\)Te\(_3\)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-30809}, year = {1973}, abstract = {No abstract available}, language = {en} } @article{BuderLapaKreissletal.2014, author = {Buder, Kristina and Lapa, Constantin and Kreissl, Michael C. and Schirbel, Andreas and Herrmann, Ken and Schnack, Alexander and Br{\"o}cker, Eva-Bettina and Goebeler, Matthias and Buck, Andreas K. and Becker, J{\"u}rgen C.}, title = {"Somatostatin receptor expression in Merkel cell carcinoma as target for molecular imaging"}, doi = {10.1186/1471-2407-14-268}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-110326}, year = {2014}, abstract = {Background Merkel cell carcinoma (MCC) is a rare cutaneous neoplasm with increasing incidence, aggressive behavior and poor prognosis. Somatostatin receptors (SSTR) are expressed in MCC and represent a potential target for both imaging and treatment. Methods To non-invasively assess SSTR expression in MCC using PET and the radiotracers [68Ga]DOTA-D-Phe1-Tyr3-octreotide (DOTATOC) or -octreotate (DOTATATE) as surrogate for tumor burden. In 24 patients with histologically proven MCC SSTR-PET was performed and compared to results of computed tomography (CT). Results SSTR-PET detected primary and metastatic MCC lesions. On a patient-based analysis, sensitivity of SSTR-PET was 73\% for nodal metastases, 100\% for bone, and 67\% for soft-tissue metastases, respectively. Notably, brain metastases were initially detected by SSTR-PET in 2 patients, whereas liver and lung metastases were diagnosed exclusively by CT. SSTR-PET showed concordance to CT results in 20 out of 24 patients. Four patients (17\%) were up-staged due to SSTR-PET and patient management was changed in 3 patients (13\%). Conclusion SSTR-PET showed high sensitivity for imaging bone, soft tissue and brain metastases, and particularly in combination with CT had a significant impact on clinical stage and patient management.}, language = {en} } @article{GriebschKernHansenetal.2022, author = {Griebsch, Nora-Isabell and Kern, Johanna and Hansen, Jonas and Rullmann, Michael and Luthardt, Julia and Helfmeyer, Stephanie and Dekorsy, Franziska J. and Soeder, Marvin and Hankir, Mohammed K. and Zientek, Franziska and Becker, Georg-Alexander and Patt, Marianne and Meyer, Philipp M. and Dietrich, Arne and Bl{\"u}her, Matthias and Ding, Yu-Shin and Hilbert, Anja and Sabri, Osama and Hesse, Swen}, title = {Central serotonin/noradrenaline transporter availability and treatment success in patients with obesity}, series = {Brain Sciences}, volume = {12}, journal = {Brain Sciences}, number = {11}, issn = {2076-3425}, doi = {10.3390/brainsci12111437}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-290294}, year = {2022}, abstract = {Serotonin (5-hydroxytryptamine, 5-HT) as well as noradrenaline (NA) are key modulators of various fundamental brain functions including the control of appetite. While manipulations that alter brain serotoninergic signaling clearly affect body weight, studies implicating 5-HT transporters and NA transporters (5-HTT and NAT, respectively) as a main drug treatment target for human obesity have not been conclusive. The aim of this positron emission tomography (PET) study was to investigate how these central transporters are associated with changes of body weight after 6 months of dietary intervention or Roux-en-Y gastric bypass (RYGB) surgery in order to assess whether 5-HTT as well as NAT availability can predict weight loss and consequently treatment success. The study population consisted of two study cohorts using either the 5-HTT-selective radiotracer [\(^{11}\)C]DASB to measure 5-HTT availability or the NAT-selective radiotracer [\(^{11}\)C]MRB to assess NAT availability. Each group included non-obesity healthy participants, patients with severe obesity (body mass index, BMI, >35 kg/m\(^2\)) following a conservative dietary program (diet) and patients undergoing RYGB surgery within a 6-month follow-up. Overall, changes in BMI were not associated with changes of both 5-HTT and NAT availability, while 5-HTT availability in the dorsal raphe nucleus (DRN) prior to intervention was associated with substantial BMI reduction after RYGB surgery and inversely related with modest BMI reduction after diet. Taken together, the data of our study indicate that 5-HTT and NAT are involved in the pathomechanism of obesity and have the potential to serve as predictors of treatment outcomes.}, language = {en} } @article{HankirPattPattetal.2017, author = {Hankir, Mohammed K. and Patt, Marianne and Patt, J{\"o}rg T. W. and Becker, Georg A. and Rullmann, Michael and Kranz, Mathias and Deuther-Conrad, Winnie and Schischke, Kristin and Seyfried, Florian and Brust, Peter and Hesse, Swen and Sabri, Osama and Kr{\"u}gel, Ute and Fenske, Wiebke}, title = {Suppressed fat appetite after Roux-en-Y gastric bypass surgery associates with reduced brain mu-opioid receptor availability in diet-induced obese male rats}, series = {Frontiers in Neuroscience}, volume = {10}, journal = {Frontiers in Neuroscience}, doi = {10.3389/fnins.2016.00620}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-181130}, year = {2017}, abstract = {Brain μ-opioid receptors (MORs) stimulate high-fat (HF) feeding and have been implicated in the distinct long term outcomes on body weight of bariatric surgery and dieting. Whether alterations in fat appetite specifically following these disparate weight loss interventions relate to changes in brain MOR signaling is unknown. To address this issue, diet-induced obese male rats underwent either Roux-en-Y gastric bypass (RYGB) or sham surgeries. Postoperatively, animals were placed on a two-choice diet consisting of low-fat (LF) and HF food and sham-operated rats were further split into ad libitum fed (Sham-LF/HF) and body weight-matched (Sham-BWM) to RYGB groups. An additional set of sham-operated rats always only on a LF diet (Sham-LF) served as lean controls, making four experimental groups in total. Corresponding to a stage of weight loss maintenance for RYGB rats, two-bottle fat preference tests in conjunction with small-animal positron emission tomography (PET) imaging studies with the selective MOR radioligand [\(^{11}\)C]carfentanil were performed. Brains were subsequently collected and MOR protein levels in the hypothalamus, striatum, prefrontal cortex and orbitofrontal cortex were analyzed by Western Blot. We found that only the RYGB group presented with intervention-specific changes: having markedly suppressed intake and preference for high concentration fat emulsions, a widespread reduction in [\(^{11}\)C]carfentanil binding potential (reflecting MOR availability) in various brain regions, and a downregulation of striatal and prefrontal MOR protein levels compared to the remaining groups. These findings suggest that the suppressed fat appetite caused by RYGB surgery is due to reduced brain MOR signaling, which may contribute to sustained weight loss unlike the case for dieting.}, language = {en} } @article{ZahoGhirlandoAlfonsoetal.2015, author = {Zaho, Huaying and Ghirlando, Rodolfo and Alfonso, Carlos and Arisaka, Fumio and Attali, Ilan and Bain, David L. and Bakhtina, Marina M. and Becker, Donald F. and Bedwell, Gregory J. and Bekdemir, Ahmet and Besong, Tabot M. D. and Birck, Catherine and Brautigam, Chad A. and Brennerman, William and Byron, Olwyn and Bzowska, Agnieszka and Chaires, Jonathan B. and Chaton, Catherine T. and Coelfen, Helmbut and Connaghan, Keith D. and Crowley, Kimberly A. and Curth, Ute and Daviter, Tina and Dean, William L. and Diez, Ana I. and Ebel, Christine and Eckert, Debra M. and Eisele, Leslie E. and Eisenstein, Edward and England, Patrick and Escalante, Carlos and Fagan, Jeffrey A. and Fairman, Robert and Finn, Ron M. and Fischle, Wolfgang and Garcia de la Torre, Jose and Gor, Jayesh and Gustafsson, Henning and Hall, Damien and Harding, Stephen E. and Hernandez Cifre, Jose G. and Herr, Andrew B. and Howell, Elizabeth E. and Isaac, Richard S. and Jao, Shu-Chuan and Jose, Davis and Kim, Soon-Jong and Kokona, Bashkim and Kornblatt, Jack A. and Kosek, Dalibor and Krayukhina, Elena and Krzizike, Daniel and Kusznir, Eric A. and Kwon, Hyewon and Larson, Adam and Laue, Thomas M. and Le Roy, Aline and Leech, Andrew P. and Lilie, Hauke and Luger, Karolin and Luque-Ortega, Juan R. and Ma, Jia and May, Carrie A. and Maynard, Ernest L. and Modrak-Wojcik, Anna and Mok, Yee-Foong and M{\"u}cke, Norbert and Nagel-Steger, Luitgard and Narlikar, Geeta J. and Noda, Masanori and Nourse, Amanda and Obsil, Thomas and Park, Chad K and Park, Jin-Ku and Pawelek, Peter D. and Perdue, Erby E. and Perkins, Stephen J. and Perugini, Matthew A. and Peterson, Craig L. and Peverelli, Martin G. and Piszczek, Grzegorz and Prag, Gali and Prevelige, Peter E. and Raynal, Bertrand D. E. and Rezabkova, Lenka and Richter, Klaus and Ringel, Alison E. and Rosenberg, Rose and Rowe, Arthur J. and Rufer, Arne C. and Scott, David J. and Seravalli, Javier G. and Solovyova, Alexandra S. and Song, Renjie and Staunton, David and Stoddard, Caitlin and Stott, Katherine and Strauss, Holder M. and Streicher, Werner W. and Sumida, John P. and Swygert, Sarah G. and Szczepanowski, Roman H. and Tessmer, Ingrid and Toth, Ronald T. and Tripathy, Ashutosh and Uchiyama, Susumu and Uebel, Stephan F. W. and Unzai, Satoru and Gruber, Anna Vitlin and von Hippel, Peter H. and Wandrey, Christine and Wang, Szu-Huan and Weitzel, Steven E and Wielgus-Kutrowska, Beata and Wolberger, Cynthia and Wolff, Martin and Wright, Edward and Wu, Yu-Sung and Wubben, Jacinta M. and Schuck, Peter}, title = {A Multilaboratory Comparison of Calibration Accuracy and the Performance of External References in Analytical Ultracentrifugation}, series = {PLoS ONE}, volume = {10}, journal = {PLoS ONE}, number = {5}, doi = {10.1371/journal.pone.0126420}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-151903}, pages = {e0126420}, year = {2015}, abstract = {Analytical ultracentrifugation (AUC) is a first principles based method to determine absolute sedimentation coefficients and buoyant molar masses of macromolecules and their complexes, reporting on their size and shape in free solution. The purpose of this multi-laboratory study was to establish the precision and accuracy of basic data dimensions in AUC and validate previously proposed calibration techniques. Three kits of AUC cell assemblies containing radial and temperature calibration tools and a bovine serum albumin (BSA) reference sample were shared among 67 laboratories, generating 129 comprehensive data sets. These allowed for an assessment of many parameters of instrument performance, including accuracy of the reported scan time after the start of centrifugation, the accuracy of the temperature calibration, and the accuracy of the radial magnification. The range of sedimentation coefficients obtained for BSA monomer in different instruments and using different optical systems was from 3.655 S to 4.949 S, with a mean and standard deviation of (4.304\(\pm\)0.188) S (4.4\%). After the combined application of correction factors derived from the external calibration references for elapsed time, scan velocity, temperature, and radial magnification, the range of s-values was reduced 7-fold with a mean of 4.325 S and a 6-fold reduced standard deviation of \(\pm\)0.030 S (0.7\%). In addition, the large data set provided an opportunity to determine the instrument-to-instrument variation of the absolute radial positions reported in the scan files, the precision of photometric or refractometric signal magnitudes, and the precision of the calculated apparent molar mass of BSA monomer and the fraction of BSA dimers. These results highlight the necessity and effectiveness of independent calibration of basic AUC data dimensions for reliable quantitative studies.}, language = {en} }