1,721,171 research outputs found
Die Lotsen der Medizin - über die Bedeutung der Pathologie in Forschung und Praxis:Interview mit Prof. Dr. Eva Wardelmann
No full textBeim Stichwort Pathologie denken viele vermutlich als erstes an Prof. Karl-Friedrich Börne aus dem Münsteraner Tatort. Ein großer Irrtum, denn der eitle Ermittler ist kein Pathologe, sondern Gerichtsmediziner. Womit sich die Pathologie stattdessen beschäftigt, erklärt Prof. Dr. Eva Wardelmann, Direktorin des Gerhard-Domagk-Instituts für Pathologie der WWU, im Podcast. Der typische Arbeitsalltag des Pathologen besteht darin, Proben zu untersuchen. Das können Abstriche sein, aber auch ganze Organe. Manchmal muss eine Probe auch während einer laufenden Operation untersucht werden, um beispielsweise festzustellen, ob es sich bei einer Gewebeentnahme um Krebs handelt oder nicht. "Unsere Arbeit hat etwas Detektivisches. Wir gehen den Dingen auf den Grund", betont die Medizinerin im Podcast
Die Lotsen der Medizin - über die Bedeutung der Pathologie in Forschung und Praxis:Interview mit Prof. Dr. Eva Wardelmann
No full textBeim Stichwort Pathologie denken viele vermutlich als erstes an Prof. Karl-Friedrich Börne aus dem Münsteraner Tatort. Ein großer Irrtum, denn der eitle Ermittler ist kein Pathologe, sondern Gerichtsmediziner. Womit sich die Pathologie stattdessen beschäftigt, erklärt Prof. Dr. Eva Wardelmann, Direktorin des Gerhard-Domagk-Instituts für Pathologie der WWU, im Podcast. Der typische Arbeitsalltag des Pathologen besteht darin, Proben zu untersuchen. Das können Abstriche sein, aber auch ganze Organe. Manchmal muss eine Probe auch während einer laufenden Operation untersucht werden, um beispielsweise festzustellen, ob es sich bei einer Gewebeentnahme um Krebs handelt oder nicht. "Unsere Arbeit hat etwas Detektivisches. Wir gehen den Dingen auf den Grund", betont die Medizinerin im Podcast
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Abstract B03: The EWS/FLI oncogene exerts pro-migratory and anti-apoptotic effects via dysregulation of focal adhesion kinase (FAK) signaling in Ewing sarcoma
No full textAbstract
Ewing sarcoma (ES), an aggressive bone tumor of childhood and adolescence, is one of the most genetically normal tumors. The oncogenic potential is derived from chimeric fusions of EWS and ETS family transcription factors, with EWS-FLI1 rearrangements in 85% of cases. (Micro-) metastatic dissemination is the major threat for patients, and earlier studies have shown that cytoskeletal rearrangements upon EWS/FLI oncoprotein expression contribute to a migratory phenotype in ES cells.
Using a patient-derived ES cell line with a stable EWS/FLI knockdown (A673-iEF), we show here that key tumorigenic effects of EWS/FLI are mediated via autophosphorylation of FAK on tyrosine 397, resulting in enhanced formation of focal adhesions and actin stress fibers as well as tumor cell migration, but impaired caspase-3-mediated anoikis (detachment-induced cell death) in vitro. This effect was not limited to A673 cells, but could also be observed in TC-32 and CADO-ES1 ES cells. Application of the FAK inhibitor 1, 2, 4, 5-Benzenetetraamine tetrahydrochloride (Y15) impaired cell migration and enhanced caspase-mediated apoptosis. Taken together, our results show that key oncogenic effects of EWS rearrangements are mediated via FAK autophosphorylation in ES and provide a rationale for the use of FAK inhibitors to impair metastatic dissemination of ES.
Citation Format: Konrad Steinestel, Marcel Trautmann, Jan Rehkaemper, Eva Wardelmann, Uta Dirksen, Wolfgang Hartmann. The EWS/FLI oncogene exerts pro-migratory and anti-apoptotic effects via dysregulation of focal adhesion kinase (FAK) signaling in Ewing sarcoma [abstract]. In: Proceedings of the AACR International Conference: New Frontiers in Cancer Research; 2017 Jan 18-22; Cape Town, South Africa. Philadelphia (PA): AACR; Cancer Res 2017;77(22 Suppl):Abstract nr B03.</jats:p
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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