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Wyszukujesz frazę "Heinrich, Bernd." wg kryterium: Autor


Wyświetlanie 1-7 z 7
Tytuł:
Aquatic warbler - song behaviour and range use
Etologia śpiewu i terytorializm poligamicznych samców wodniczki
Acta Ornithologica, vol. 34, no. 2
Song behaviour and range use in the polygamous aquatic warbler Acrocephalus paludicola
Autorzy:
Schmidt, Veronika (1973– )
Schaefer, Heinrich Martin
Leisler, Bernd
Współwytwórcy:
Meeting of the European Ornithologists' Union (2 ; 1999 ; Gdańsk)
Polska Akademia Nauk. Muzeum i Instytut Zologii
Polska Akademia Nauk. Muzeum i Instytut Zoologii
Wydawca:
Muzeum i Instytut Zoologii PAN
Powiązania:
Acta Ornithologica
Opis:
Males Aquatic Warblers used three different song types. Playback experiments revealed, that A-type song had an intrasexual function, while C-type song seemed to serve intersexual communication. Song flight contained a higher portion of C-song than spontaneous song. Song flight rate was not constant throughout the breeding season with a maximum in the absence of receptive females. The range use of both sexes was studied using radio-telemetry during two breeding seasons. Males used home ranges of up to 8 ha in size. These home ranges overlapped up to 74% with the ranges of other males. Females used isolated patches of 2.8 to 6.4 ha within activity ranges of 100-160 ha during the mating period. Seasonal variation in mobility of males was correlated to the presence of receptive females. The diurnal mobility of males was constant during the day and decreased after 20:00 when males participated in an evening chorus.
P. [209]-213 ; 27 cm
Streszcz. pol. Nazwy taksonów także w jęz. łac.
Abstract in Polish. Taxa in Latin
Bibliogr. s. 212
S. [209]-213 ; 27 cm
Bibliogr. p. 212
Referat wygłoszony na Second Meeting of the European Ornithologists' Union
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Analysis of hyperforin (St. Johns wort) action at TRPC6 channel leads to the development of a new class of antidepressant drugs
Autorzy:
Heinrich, Markus
Tran, Mai Anh
Schafer, Michael K.E.
Hellmich, Ute A.
Nowak, Gabriel
Muller, Christian P.
Zheng, Fang
Ye, Lian
El Hamdaoui, Yamina
Lichtenstein, Dajana
Alzheimer, Christian
Fritz, Nikolas
Friedland, Kristina
Treccani, Giulia
Schirmeister, Tanja
Braeuning, Albert
Schwickert, Kevin
Weikert, Dorothee
Nurnberg, Bernd
Opis:
St. John’s wort is an herb, long used in folk medicine for the treatment of mild depression. Its antidepressant constituent, hyperforin, has properties such as chemical instability and induction of drug-drug interactions that preclude its use for individual pharmacotherapies. Here we identify the transient receptor potential canonical 6 channel (TRPC6) as a druggable target to control anxious and depressive behavior and as a requirement for hyperforin antidepressant action. We demonstrate that TRPC6 deficiency in mice not only results in anxious and depressive behavior, but also reduces excitability of hippocampal CA1 pyramidal neurons and dentate gyrus granule cells. Using electrophysiology and targeted mutagenesis, we show that hyperforin activates the channel via a specific binding motif at TRPC6. We performed an analysis of hyperforin action to develop a new antidepressant drug that uses the same TRPC6 target mechanism for its antidepressant action. We synthesized the hyperforin analog Hyp13, which shows similar binding to TRPC6 and recapitulates TRPC6-dependent anxiolytic and antidepressant effects in mice. Hyp13 does not activate pregnan-X-receptor (PXR) and thereby loses the potential to induce drug-drug interactions. This may provide a new approach to develop better treatments for depression, since depression remains one of the most treatment-resistant mental disorders, warranting the development of effective drugs based on naturally occurring compounds.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
    Wyświetlanie 1-7 z 7

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