Cellular and molecular basis of circadian timing in mammals.

Abstract:

:In mammals, a master circadian clock resides in the suprachiasmatic nuclei of the anterior hypothalamus. The suprachiasmatic nuclei is composed of multiple, single-cell circadian oscillators, which, when synchronized, lead to coordinated circadian outputs that ultimately regulate overt rhythms. Several "clock genes" have been cloned that are involved in interacting transcriptional/translational feedback loops that comprise the molecular clockwork. The daily light-dark cycle ultimately impinges on the control of 2 clock genes that reset the core clock mechanism. Output genes are also generated by the central clock mechanism, but their protein products transduce downstream effects. Greater understanding of the cellular and molecular control of the suprachiasmatic nuclei provides opportunities for pharmacological manipulation of circadian timing.

journal_name

Semin Perinatol

journal_title

Seminars in perinatology

authors

Reppert SM

doi

10.1053/sper.2000.9122

keywords:

subject

Has Abstract

pub_date

2000-08-01 00:00:00

pages

243-6

issue

4

eissn

0146-0005

issn

1558-075X

pii

S0146-0005(00)80035-X

journal_volume

24

pub_type

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