Central and peripheral circadian clocks in mammals.
Central and peripheral circadian clocks in mammals.
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DOI:
10.1146/annurev-neuro-060909-153128
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发表时间:
2012
影响因子:
13.9
通讯作者:
Takahashi JS
中科院分区:
文献类型:
--
作者:
Mohawk JA;Green CB;Takahashi JS
The circadian system of mammals is composed of a hierarchy of oscillators that function at the cellular, tissue and systems levels. A common molecular mechanism underlies the cell autonomous circadian oscillator throughout the body, yet this clock system is adapted to different functional contexts. In the central suprachiasmatic nucleus (SCN) of the hypothalamus, a coupled population of neuronal circadian oscillators acts as a master pacemaker for the organism to drive rhythms in activity and rest, feeding, body temperature and hormones. Coupling within the SCN network confers robustness to the SCN pacemaker which in turn provides stability to the overall temporal architecture of the organism. Throughout the majority of the cells in the body, cell autonomous circadian clocks are intimately enmeshed within metabolic pathways. Thus, an emerging view for the adaptive significance of circadian clocks is their fundamental role in orchestrating metabolism.
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