Results 21 to 30 of about 347,727 (386)
Cell, 2001 The circadian clock in all organisms is so intimately linked to light reception that it appears as if evolution has simply wired a timer into the mechanism that processes photic information. Several recent studies have provided new insights into the role of light input pathways in the circadian system of Arabidopsis.
Till Roenneberg, Martha Merrow
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NPAS2 Compensates for Loss of CLOCK in Peripheral Circadian Oscillators. [PDF]
PLoS Genetics, 2016 Heterodimers of CLOCK and BMAL1 are the major transcriptional activators of the mammalian circadian clock. Because the paralog NPAS2 can substitute for CLOCK in the suprachiasmatic nucleus (SCN), the master circadian pacemaker, CLOCK-deficient mice ...
Dominic Landgraf +3 more
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The circadian clock and asthma [PDF]
Thorax, 2013 It is characteristic of asthma that symptoms worsen overnight, particularly in the early hours of the morning. Nocturnal symptoms in asthma are common and are an important indicator for escalation of treatment. An extensive body of research has demonstrated that nocturnal symptoms of cough and dyspnea are accompanied by circadian variations in airway ...
Durrington, Hannah J. +3 more
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Circadian Biology: Clocks within Clocks [PDF]
Current Biology, 2005 A small cluster of approximately 20,000 neurons in the ventral hypothalamus provide the body with key time-keeping signals and drive circadian rhythms. This circadian clock exhibits surprisingly complex substructures, with inputs from the retina, and outputs to other brain structures.
Piggins, Hugh D., Loudon, Andrew
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The Plant Cell, 2020 The rice circadian clock integrates sugar signaling and regulates expression of strigolactone pathway genes to control tillering and panicle development.
F. Wang +7 more
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Feeding and circadian clocks [PDF]
Reproduction Nutrition Development, 2006 The mammalian genome encodes at least a dozen of genes directly involved in the regulation of the feedback loops constituting the circadian clock. The circadian system is built up on a multitude of oscillators organized according to a hierarchical model in which neurons of the suprachiasmatic nuclei of the hypothalamus may drive the central circadian ...
Pardini, Lissia, Kaeffer, Bertrand
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Circadian clock: a regulator of the immunity in cancer
Cell Communication and Signaling, 2021 The circadian clock is an endogenous timekeeper system that controls and optimizes biological processes, which are consistent with a master circadian clock and peripheral clocks and are controlled by various genes.
Zhen Zhang +5 more
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Circadian clockâA promising scientific target in oral science
Frontiers in Physiology, 2022 The oral and maxillofacial organs play vital roles in chewing, maintaining facial beauty, and speaking. Almost all physiological processes display circadian rhythms that are driven by the circadian clock, allowing organisms to adapt to the changing ...
Guangxia Feng +16 more
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The circadian clock of cyanobacteria [PDF]
BioEssays, 2000 A circadian clock, with physiological characteristics similar to those of eukaryotes, functions in the photosynthetic prokaryote, cyanobacteria. The molecular mechanism of this clock has been efficiently dissected using a luciferase reporter gene that reports the status of the clock.
Masahiro Ishiura, Takao Kondo
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Circadian clocks in the ovary [PDF]
Trends in Endocrinology & Metabolism, 2010 Clock gene expression has been observed in tissues of the hypothalamic-pituitary-gonadal (HPG) axis. Whereas the contribution of hypothalamic oscillators to the timing of reproductive biology is well known, the role of peripheral oscillators like those in the ovary is less clear.
Michael Menaker, Michael T. Sellix
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