Steven A. Brown and the synchronization of circadian rhythms by body temperature cycles.

Autor: Schibler U; Department of Molecular and Cellular Biology, Sciences III, University of Geneva, Geneva, Switzerland.
Jazyk: angličtina
Zdroj: The European journal of neuroscience [Eur J Neurosci] 2024 Jul; Vol. 60 (2), pp. 3891-3900. Date of Electronic Publication: 2024 Jun 04.
DOI: 10.1111/ejn.16431
Abstrakt: The mammalian circadian timing system has a hierarchical architecture, with a central pacemaker located in the brain's suprachiasmatic nucleus orchestrating rhythms in behaviour and physiology. In cooperation with environmental cycles, it synchronizes the phases of peripheral oscillators operating in most cells of the body. Even cells kept in tissue culture harbour self-sustained and cell-autonomous circadian clocks that keep ticking throughout their lifespan. The master pacemaker in the suprachiasmatic nucleus is synchronized primarily by light-dark cycles, whereas peripheral oscillators are phase entrained by a multitude of systemic signalling pathways. These include pathways depending on feeding-fasting cycles, cellular actin polymerization dynamics, endocrine rhythms and, surprisingly, body temperature oscillations. Using tissue culture and murine models, Steve Brown was the first one to demonstrate that shallow rhythms of mammalian body temperature are timing cues (zeitgebers) for peripheral circadian clocks.
(© 2024 The Author(s). European Journal of Neuroscience published by Federation of European Neuroscience Societies and John Wiley & Sons Ltd.)
Databáze: MEDLINE
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