Institution
University of Würzburg
Education•Wurzburg, Bayern, Germany•
About: University of Würzburg is a education organization based out in Wurzburg, Bayern, Germany. It is known for research contribution in the topics: Population & CAS Registry Number. The organization has 31437 authors who have published 62203 publications receiving 2337033 citations. The organization is also known as: Julius-Maximilians-Universität Würzburg & Würzburg University.
Topics: Population, CAS Registry Number, Immune system, Gene, T cell
Papers published on a yearly basis
Papers
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Imperial College London1, Humboldt University of Berlin2, University of Paris3, University of Würzburg4, University of Verona5, Erasmus University Rotterdam6, University of Pisa7, John Radcliffe Hospital8, Heidelberg University9, University of Copenhagen10, Sapienza University of Rome11, Newcastle upon Tyne Hospitals NHS Foundation Trust12
TL;DR: EFSUMB study group M. Claudon, D. Cosgrove, T. Tranquart, L. Thorelius, and H. Whittingham study group L. de.
Abstract: EFSUMB study group M. Claudon1, D. Cosgrove2, T. Albrecht3, L. Bolondi4, M. Bosio5, F. Calliada6, J.-M. Correas7, K. Darge8, C. Dietrich9, M. D'On ofrio10, D. H. Evans11, C. Filice12, L. Greiner13, K. Jäger14, N. de. Jong15, E. Leen16, R. Lencioni17, D. Lindsell18, A. Martegani19, S. Meairs20, C. Nolsøe21, F. Piscaglia22, P. Ricci23, G. Seidel24, B. Skjoldbye25, L. Solbiati26, L. Thorelius27, F. Tranquart28, H. P. Weskott29, T. Whittingham30
755 citations
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University of Buenos Aires1, National Scientific and Technical Research Council2, University of Würzburg3, University of California, Berkeley4, Swedish University of Agricultural Sciences5, Commonwealth Scientific and Industrial Research Organisation6, University of Göttingen7, Michigan State University8, Hebrew University of Jerusalem9, University of Queensland10, University of Reading11, Jagiellonian University12, Federal University of Bahia13, Rutgers University14, Lüneburg University15
TL;DR: Wild pollinators are relevant for crop productivity and stability even when honey bees are abundant, and policies to preserve and restore natural areas in agricultural landscapes should enhance levels and reliability of pollination services.
Abstract: Sustainable agricultural landscapes by definition provide high magnitude and stability of ecosystem services, biodiversity and crop productivity However, few studies have considered landscape effects on the stability of ecosystem services We tested whether isolation from florally diverse natural and semi-natural areas reduces the spatial and temporal stability of flower-visitor richness and pollination services in crop fields We synthesised data from 29 studies with contrasting biomes, crop species and pollinator communities Stability of flower-visitor richness, visitation rate (all insects except honey bees) and fruit set all decreased with distance from natural areas At 1 km from adjacent natural areas, spatial stability decreased by 25, 16 and 9% for richness, visitation and fruit set, respectively, while temporal stability decreased by 39% for richness and 13% for visitation Mean richness, visitation and fruit set also decreased with isolation, by 34, 27 and 16% at 1 km respectively In contrast, honey bee visitation did not change with isolation and represented > 25% of crop visits in 21 studies Therefore, wild pollinators are relevant for crop productivity and stability even when honey bees are abundant Policies to preserve and restore natural areas in agricultural landscapes should enhance levels and reliability of pollination services
751 citations
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TL;DR: It is found that in the fish medaka the Y chromosome-specific region spans only about 280 kb and contains a duplicated copy of the autosomal DMRT1 gene, named D MRT1Y, which is the only functional gene in this chromosome segment and maps precisely to the male sex-determining locus.
Abstract: The genes that determine the development of the male or female sex are known in Caenorhabditis elegans, Drosophila, and most mammals. In many other organisms the existence of sex-determining factors has been shown by genetic evidence but the genes are unknown. We have found that in the fish medaka the Y chromosome-specific region spans only about 280 kb. It contains a duplicated copy of the autosomal DMRT1 gene, named DMRT1Y. This is the only functional gene in this chromosome segment and maps precisely to the male sex-determining locus. The gene is expressed during male embryonic and larval development and in the Sertoli cells of the adult testes. These features make DMRT1Y a candidate for the medaka male sex-determining gene.
751 citations
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TL;DR: The CHO cells with stably transfected adenosine receptors provide an identical cellular background for such a pharmacological characterization and are valuable systems for further characterization of specific receptor subtypes and for the development of new ligands.
Abstract: Four adenosine receptor subtypes of the family of G protein-coupled receptors, designated A1, A2A, A2B and A3 are currently known. In this study all human subtypes were stably transfected into Chinese hamster ovary (CHO) cells in order to be able to study their pharmacological profile in an identical cellular background utilizing radioligand binding studies (A1, A2A, A3) or adenylyl cyclase activity assays (A2B). The A1 subtype showed the typical pharmacological profile with 2-chloro-N6-cyclopentyladenosine (CCPA) as the agonist with the highest affinity and a marked stereoselectivity for the N6-phenylisopropyladenosine (PIA) diastereomers. In competition with antagonist radioligand biphasic curves were observed for agonists. In the presence of GTP all receptors were converted to a single low affinity state indicating functional coupling to endogenous G proteins. For A2A adenosine receptors CGS 21680 (2-[p-(2-carboxyethyl)phenylethylamino]-5'-N-ethylcarboxamidoadeno sine) and N-ethylcarboxamidoadenosine (NECA) were found to be the most potent agonists followed by R- and S-PIA with minor stereoselectivity. The relative potencies of agonists for the A2B adenosine receptor could only be tested by measurement of receptor-stimulated adenylyl cyclase activity. NECA was the most potent agonist with an EC50-value of 2.3 microM whereas all other compounds tested were active at concentrations in the high micromolar range. Inhibition of NECA-stimulated adenylyl cyclase identified xanthine amino congener (XAC; 8-[4-[[[[(2-aminoethyl)amino]-carbonyl]methyl]oxy]phenyl]-1,3-dipropylxa nthine) as the most potent antagonist at this receptor subtype. The A3 receptor was characterized utilizing the nonselective agonist [3H]NECA. The N6-benzyl substituted derivatives of adenosine-5'-N-methyluronamide (MECA) turned out to be the most potent agonists. The notion of xanthine-insensitivity of the A3 receptor should be dropped at least for the human receptor as xanthines with submicromolar affinity were found. Overall, the pharmacological characteristics of the human receptors are similar to other species with some species-specific characteristics. In this study we present for the first time the comparative pharmacology of all known human adenosine receptor subtypes. The CHO cells with stably transfected adenosine receptors provide an identical cellular background for such a pharmacological characterization. These cells are valuable systems for further characterization of specific receptor subtypes and for the development of new ligands.
751 citations
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TL;DR: Drosophila coiled-coil domain protein Bruchpilot-like proteins seem to establish proximity between Ca2+ channels and vesicles to allow efficient transmitter release and patterned synaptic plasticity.
Abstract: The molecular organization of presynaptic active zones during calcium influx–triggered neurotransmitter release is the focus of intense investigation. The Drosophila coiled-coil domain protein Bruchpilot (BRP) was observed in donut-shaped structures centered at active zones of neuromuscular synapses by using subdiffraction resolution STED (stimulated emission depletion) fluorescence microscopy. At brp mutant active zones, electron-dense projections (T-bars) were entirely lost, Ca 2+ channels were reduced in density, evoked vesicle release was depressed, and short-term plasticity was altered. BRP-like proteins seem to establish proximity between Ca 2+ channels and vesicles to allow efficient transmitter release and patterned synaptic plasticity.
749 citations
Authors
Showing all 31653 results
Name | H-index | Papers | Citations |
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Peer Bork | 206 | 697 | 245427 |
Cyrus Cooper | 204 | 1869 | 206782 |
D. M. Strom | 176 | 3167 | 194314 |
George P. Chrousos | 169 | 1612 | 120752 |
David A. Bennett | 167 | 1142 | 109844 |
Marc W. Kirschner | 162 | 457 | 102145 |
Josef M. Penninger | 154 | 700 | 107295 |
William A. Catterall | 154 | 536 | 83561 |
Rui Zhang | 151 | 2625 | 107917 |
Niels Birbaumer | 142 | 835 | 77853 |
Kim Nasmyth | 142 | 294 | 59231 |
James J. Gross | 139 | 529 | 100206 |
Michael Schmitt | 134 | 2007 | 114667 |
Jean-Luc Brédas | 134 | 1026 | 85803 |
Alexander Schmidt | 134 | 1185 | 83879 |