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Institution

University of Marburg

EducationMarburg, Germany
About: University of Marburg is a education organization based out in Marburg, Germany. It is known for research contribution in the topics: Population & Virus. The organization has 23195 authors who have published 42907 publications receiving 1506069 citations. The organization is also known as: Philipps University of Marburg & Philipps-Universität.
Topics: Population, Virus, Gene, Exciton, Photoluminescence


Papers
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Journal ArticleDOI
TL;DR: Comparative molecular field analysis has been applied to a data set of thermolysin inhibitors and the results obtained demonstrate the prediction power of the CoMSIA method.
Abstract: Comparative molecular field analysis has been applied to a data set of thermolysin inhibitors. Fields expressed in terms of molecular similarity indices (CoMSIA) have been used instead of the usually applied Lennard-Jones- and Coulomb-type potentials (CoMFA). Five different properties, assumed to cover the major contributions responsible for ligand binding, have been considered: steric, electrostatic, hydrophobic, and hydrogen-bond donor or acceptor properties. The statistical evaluation of the field properties by PLS analysis reveals a similar predictive potential to CoMFA. However, significantly improved and easily interpretable contour maps are obtained. The features in these maps intuitively suggest where to modify a molecular structure in terms of physicochemical properties and functional groups in order to improve its binding affinity. They can also be interpreted with respect to the known structural protein environment of thermolysin. Most of the highlighted regions in the maps are mirrored by features in the surrounding environment required for binding. Using the derived correlation model, different members of a combinatorial library designed for thermolysin inhibition have been scored for affinity. The results obtained demonstrate the prediction power of the CoMSIA method.

263 citations

Journal ArticleDOI
TL;DR: In this article, two studies with call centre agents (N=211, N=161) were conducted in which the relationships of objective working conditions (e.g., inbound vs. outbound work), subjective measures of motivating potential of work, and organisational identification were analyzed.
Abstract: Previous work has not considered the interplay of motivational forces linked to the task with those linked to the social identity of employees. The aim of the present study is to combine these approaches. Two studies with call centre agents (N=211, N=161) were conducted in which the relationships of objective working conditions (e.g., inbound vs. outbound work), subjective measures of motivating potential of work, and organisational identification were analysed. Job satisfaction, turnover intentions, organisational citizenship behavior (OCB), health complaints, and burnout were assessed as indicators of the agents’ work motivation and well-being. In both studies it was found that objective working conditions substantially correlated with subjective measures of work motivation. Moreover, employees experiencing a high motivating potential at work reported more OCB, higher job satisfaction, and less turnover intentions. As hypothesized, organisational identification was a further independent predict...

263 citations

Journal ArticleDOI
C. Alt1, Tome Anticic, B. Baatar2, D. Barna3, J. Bartke4, M. Behler5, L. Betev1, Helena Bialkowska, A. Billmeier6, Christoph Blume1, Bożena Boimska, Nicolas Borghini7, M. Botje, J. Bracinik8, R. Bramm1, Rene Brun9, Predrag Buncic1, Predrag Buncic9, V. Cerny8, O. Chvala6, G.E. Cooper10, J. G. Cramer11, P. Csato3, Phuong Mai Dinh12, P. Dinkelaker1, V. Eckardt13, P. Filip13, Z. Fodor14, Panagiota Foka15, P. Freund13, V. Friese5, J. Gál3, Marek Gaździcki1, G. Georgopoulos16, E. Gladysz4, S. Hegyi3, C. Höhne5, Peter Martin Jacobs10, Kreso Kadija9, A. Karev13, S. Kniege1, V. I. Kolesnikov2, Thorsten Sven Kollegger1, R. Korus17, Marek Kowalski4, I. Kraus15, Michal Kreps8, M. van Leeuwen, Peter Levai3, Alexander Malakhov2, Christina Markert15, B. W. Mayes18, G. L. Melkumov2, C. Meurer1, Andre Mischke15, M. K. Mitrovski1, Jozsef Molnar3, St Mrówczyński17, G. Odyniec10, J. Y. Ollitrault19, Gergely Palla3, Apostolos Panagiotou16, K. Perl20, Andreas Petridis16, Miroslav Pikna8, Lawrence Pinsky18, A. M. Poskanzer10, F. Pühlhofer5, Jeffrey G. Reid11, Rainer Arno Ernst Renfordt1, W. Retyk20, H. G. Ritter10, Christof Roland21, Gunther Roland21, M. Rybczynśki17, A. Rybicki9, A. Rybicki4, A. Sandoval15, H. Sann15, N. Schmitz13, P. Seyboth13, Ferenc Sikler3, Branislav Sitar8, E. Skrzypczak20, R.J.M. Snellings10, G. Stefanek17, R. Stock1, H. Ströbele1, Tatjana Susa, I. Szentpetery3, J. Sziklai3, Thomas A. Trainor11, Dezso Varga3, M. Vassiliou16, Gabor Istvan Veres3, Gyorgy Vesztergombi3, Sergey Voloshin22, D. Vranic15, A. Wetzler1, Zbigniew Wlodarczyk17, I. K. Yoo23, I. K. Yoo15, J. Zaranek1, J. Zimányi3 
TL;DR: In this paper, both the standard method of correlating particles with an event plane and the cumulant method of studying multiparticle correlations were used to reconstruct the collective motion in A+A collisions at SPS energies.
Abstract: Directed and elliptic flow measurements for charged pions and protons are reported as a function of transverse momentum, rapidity, and centrality for 40A and 158A GeV Pb+Pb collisions, as recorded by the NA49 detector. Both the standard method of correlating particles with an event plane and the cumulant method of studying multiparticle correlations are used. In the standard method the directed flow is corrected for conservation of momentum. In the cumulant method elliptic flow is reconstructed from genuine four-, six-, and eight-particle correlations, showing the first unequivocal evidence for collective motion in A+A collisions at SPS energies.

262 citations

Journal ArticleDOI
30 Jan 2006-Oncogene
TL;DR: The results indicate that promoter hypermethylation is the predominant mechanism of SFRP1 gene silencing in human breast cancer and that SFRp1 gene inactivation in breast cancer is associated with unfavourable prognosis.
Abstract: The canonical Wnt signalling pathway plays a key role during embryogenesis and defects in this pathway have been implicated in the pathogenesis of various types of tumours, including breast cancer. The gene for secreted frizzled-related protein 1 (SFRP1) encodes a soluble Wnt antagonist and is located in a chromosomal region (8p22–p12) that is often deleted in breast cancer. In colon, lung, bladder and ovarian cancer SFRP1 expression is frequently inactivated by promoter methylation. We have previously shown that loss of SFRP1 protein expression is a common event in breast tumours that is associated with poor overall survival in patients with early breast cancer. To investigate the cause of SFRP1 loss in breast cancer, we performed mutation, methylation and expression analysis in human primary breast tumours and breast cell lines. No SFRP1 gene mutations were detected. However, promoter methylation of SFRP1 was frequently observed in both primary breast cancer (61%, n=130) and cell lines analysed by methylation-specific polymerase chain reaction (MSP). We found a tight correlation (P<0.001) between methylation and loss of SFRP1 expression in primary breast cancer tissue. SFRP1 expression was restored after treatment of tumour cell lines with the demethylating agent 5-aza-2′-deoxycytidine. Most interestingly, SFRP1 promoter methylation was an independent factor for adverse patient survival in Kaplan–Meier analysis. Our results indicate that promoter hypermethylation is the predominant mechanism of SFRP1 gene silencing in human breast cancer and that SFRP1 gene inactivation in breast cancer is associated with unfavourable prognosis.

262 citations

Journal ArticleDOI
TL;DR: Co-occurrence of several diseases with AAT deficiency is discussed, providing new evidence that, in addition to protease inhibition, AAT expresses anti-inflammatory, immunomodulatory and antimicrobial properties, and highlighting the importance of this protein in health and diseases.

262 citations


Authors

Showing all 23488 results

NameH-indexPapersCitations
John C. Morris1831441168413
Russel J. Reiter1691646121010
Martin J. Blaser147820104104
Christopher T. Walsh13981974314
Markus Cristinziani131114084538
James C. Paulson12644352152
Markus F. Neurath12493462376
Nicholas W. Wood12361466270
Florian Lang116142166496
Howard I. Maibach116182160765
Thomas G. Ksiazek11339846108
Frank Glorius11366349305
Eberhard Ritz111110961530
Manfred T. Reetz11095942941
Wolfgang H. Oertel11065351147
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023142
2022412
20212,103
20201,918
20191,749
20181,592