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Einleitung: Die linksventrikuläre diastolische Dysfunktion (LVDD) ist bei Diabetikern noch vor Entwicklung einer klinisch apparenten Herzinsuffizienz eines der ersten Anzeichen einer kardialen Beteiligung. Daher soll in dieser Studie untersucht werden, ob die LVDD mit ECG-gated F-18-FDG PET in einem Diabetes-Rattenmodell dargestellt werden kann.
Methodik: Es wurden F-18-FDG PET Scans in einem Typ-2-Diabetes Rattenmodell (ZDF fa/fa, n=6) und in ZL Kontrollen (n=6) vorgenommen (Alter, jeweils 13 Wochen). Unter Hyperinsulinemic-Euglycemic Clamp-Technik wurden 37 MBq 18F-FDG über die Schwanzvene appliziert. 15-35 Minuten nach Tracergabe wurden mittels eines Kleintier-PET-Scanners sowie unter EKG-Ableitung PET Scans angefertigt (16 frames/cardiac cycle). Die linksventrikuläre Ejektionsfraktion (EF) und die Peak Füllrate (PFR) wurden mittels einer geeigneten Software (Heart Function View) gemessen, wobei die Software an die Größe des Rattenherzes angepasst wurde.
Ergebnisse: Im Alter von 13 Wochen entwickeln ZDF Diabetes-Ratten eine im Vergleich zu Kontrolltieren eine signifikante myokardiale Hypertrophie, bestätigt durch post-mortem Analyse des Herzgewichtes (994±78mg vs. 871±44mg in ZDF Diabetes-Ratten vs. ZL Kontrollen, p<0.01). ECG-gated PET zeigte eine signifikante Abnahme der LV diastolischen PFR (10.4±0.5 vs. 11.8±0.4 EDV/sec in ZDF Diabetes-Ratten vs. ZL Kontrollen, p<0.001), jedoch zeigte sich kein signifikanter Unterschied zwischen LVEF und der Herzfrequenz in den untersuchten ZDF Diabetes-Ratten und Kontrollen (LVEF: 60.0±4.5 vs. 63.7±4.1%, n.s. und HR: 305±25 vs. 323±24 bpm, n.s.).
Schlussfolgerung: Im Diabetes-Ratten-Modell kann unter Verwendung eines ECG-gated FDG-PET Protokolls die diastolische Dysfunktion als Parameter der frühen diabetischen Kardiomyopathie nachgewiesen werden.
Pandinus imperator is a forest dweller of tropical West Africa. In the field, lobserved aggregations of up to 15 individuals. In the laboratory, mixed age groups of related and also unrelated animals lived jointly in terraria rarely showing within-group aggression or cannibalism. Brood-caring behavior of the mother influenced growth rate and survival probability of the young. With birth, mothers became very aggressive. To study family cohesion in Pandinus, experiments with family groups were conducted. Siblings aggregated around their mother. In choice experiments with two family groups, mothers were placed in enclosures that only the young were able to enter or to leave. Second instars significantly preferred the enclosure containing their own mother. Aggression among unrelated young of the same age was not observed. Feeding experiments studied the possible advantages of long-Iasting group living with regard to enhanced success in prey capture and its effect on growth of the young. Even groups of second instars were unable to subdue large prey on their own. Sibling groups with their mother removed suffered high mortality due to starvation and cannibalism compared to groups with mothers present. Here, young grew significantly faster: they shared the prey that only the mother was able to kill and dismember. Pandinus imperator has to be considered an intermediate subsocial scorpion.
In accordance with various other studies. the present longitudinal study gave no clues for specific personality variables or traits 01' drug addicts. Personality factors did not allow a valid prediction of the kind 01' th~apy termination. nor were there clear deviations from the norm. Analyzed as a group. the addicts showed only minor changes that appeared over the course of treatment. These results correspond to data reported on alcohol dependency (cf. Wanke 1987). A more differentiated picture is gained when stable and changeable components of personality and analyzed separately. Changeable components are of special relevance for treatment. From the current study these were characteristics of action regulation, that is, activation and impulse control, social interaction, and somatic reactions (sleep disorders, bodily reactions to drug deprivation). For relapse prevention, attention should be given to stable, persistent, problematic components. Persistent suicidal ideas turned out to be one such aspect. Like the differentiation between state and trait anxiety, stable and variable components could also be separated for other domains of personality when they are used to describe the course of treatment. How can personality concepts and instruments for assessment be utilized for treatment? The claim of therapists to predict the outcome of a treatment may be realized for only a delimited period of time. Especially at such critical points as shortly before relapse, a firm prediction might be possible only rarely (Wanke 1987). Lack of predictability could be a warning which, however, can be verified only afterward. According to the current results, one benefit of personality concepts could be to specify targets of change on an individual basis and thus clarify effects of therapeutic interventions. Personality concepts can help patients to better understand their problems and to recognize changes as weil as persistent areas of vulnerability.
Characterization of the env gene and of two novel coding regions of the human spumaretrovirus
(1988)
Recombinant clones harboring retroviral DNA were established. The nucleotide sequence of the central and 3' region of the genome of the human spumaretrovirus was determined. The 5' end of the deduced protein sequence was homologaus to the endonuclease domain of retroviral reverse transcriptases. A small intergenic region is followed by a lang open reading frame of 985 aminoacid residues that according to its genomic location and structural features is a typical retroviral env gene. Surprisingly, the postenv region contains two open reading frames that encodes two novel retroviral genes, termed bel-l and bel-2. The 3' LTR is 963 nucleotides lang and contains the signal sequences characteristic for transcriptional regulation of retrovirus genomes.
Am Montag, den 29. November 2010 fand das 6. Würzburger Wirtschaftssymposium unter dem Leitmotiv "Chef, lass uns mal Kultur machen!" statt. Die gemeinnützige Veranstaltung versteht sich seit jeher als Ort der Begegnung und des gemeinsamen Gedankenaustauschs, Studenten und Mitarbeiter aller Fachbereiche nahmen ebenso teil wie interessierte Bürger außerhalb der Würzburger Hochschulen. Die Festschrift enthält Interviews mit sowie Gastbeiträge von Referenten des 6. Würzburger Wirtschaftssymposiums. Darüber hinaus greifen Gastbeiträge von Experten aus Wissenschaft, Wirtschaft, Politik und Gesellschaft weitere Facetten auf und stellen das Thema damit auf eine breitere Grundlage.
No abstract available
Despite the internet's dynamic and collaborative nature, scientists continue to produce grant proposals, lab notebooks, data files, conclusions etc. that stay in static formats or are not published online and therefore not always easily accessible to the interested public. Because of limited adoption of tools that seamlessly integrate all aspects of a research project (conception, data generation, data evaluation, peerreviewing and publishing of conclusions), much effort is later spent on reproducing or reformatting individual entities before they can be repurposed independently or as parts of articles.
We propose that workflows - performed both individually and collaboratively - could potentially become more efficient if all steps of the research cycle were coherently represented online and the underlying data were formatted, annotated and licensed for reuse. Such a system would accelerate the process of taking projects from conception to publication stages and allow for continuous updating of the data sets and their interpretation as well as their integration into other independent projects.
A major advantage of such work ows is the increased transparency, both with respect to the scientific process as to the contribution of each participant. The latter point is important from a perspective of motivation, as it enables the allocation of reputation, which creates incentives for scientists to contribute to projects. Such work ow platforms offering possibilities to fine-tune the accessibility of their content could gradually pave the path from the current static mode of research presentation into a more coherent practice of open science.
De Nedjma à Nedschma: Il y a trente ans, la critique allemande découvrait une nouvelle comète
(1993)
No abstract available
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Der Band versammelt aktuelle Beiträge, die der sprachwissenschaftlichen Erforschung der Kodifizierung der Sprache, insbesondere des Deutschen, gewidmet sind. Es finden sich sowohl historisch als auch gegenwartssprachlich, sowohl theoretisch als auch empirisch-exemplarisch orientierte Untersuchungen, Stellungnahmen und Ausblicke. Sprach-systematisch stehen phonetische, graphematische, syntaktische sowie soziolinguistische Blickrichtungen im Vordergrund. Darüber hinaus werden verschiedentlich die methodologischen Probleme reflektiert, die mit der Annahme eines Sprachkodex, seiner Formulierung und seiner möglichen Wirkung auf die Sprachentwicklung verbunden sind. Die meisten Aufsätze gehen auf eine entsprechende Tagung zurück, die im Februar 2015 am Institut für deutsche Philologie der Universität Würzburg stattfand.