Results 21 to 30 of about 404,197 (358)

FLOWERING LOCUS C -dependent and -independent regulation of the circadian clock by the autonomous and vernalization pathways [PDF]

open access: yes, 2006
Background The circadian system drives pervasive biological rhythms in plants. Circadian clocks integrate endogenous timing information with environmental signals, in order to match rhythmic outputs to the local day/night cycle.
Amasino, Richard M.   +5 more
core   +4 more sources

Thyroxine differentially modulates the peripheral clock: lessons from the human hair follicle [PDF]

open access: yes, 2015
The human hair follicle (HF) exhibits peripheral clock activity, with knock-down of clock genes (BMAL1 and PER1) prolonging active hair growth (anagen) and increasing pigmentation.
Farjo, Bessam   +4 more
core   +4 more sources

A Long Noncoding RNA Perturbs the Circadian Rhythm of Hepatoma Cells to Facilitate Hepatocarcinogenesis

open access: yesNeoplasia: An International Journal for Oncology Research, 2015
Clock circadian regulator (CLOCK)/brain and muscle arnt-like protein-1 (BMAL1) complex governs the regulation of circadian rhythm through triggering periodic alterations of gene expression.
Ming Cui   +5 more
doaj   +1 more source

The neurobiology of circadian rhythms [PDF]

open access: yes, 2009
Purpose of review There is growing awareness of the importance of circadian rhythmicity in various research fields. Exciting developments are ongoing in the field of circadian neurobiology linked to sleep, food intake, and memory.
Boersma, Gretha J.,   +2 more
core   +3 more sources

Circadian rhythms and hormonal homeostasis: Pathophysiological implications [PDF]

open access: yes, 2017
Over recent years, a deeper comprehension of the molecular mechanisms that control biological clocks and circadian rhythms has been achieved. In fact, many studies have contributed to unravelling the importance of the molecular clock for the regulation ...
Bruscalupi, Giovannella, Gnocchi, Davide
core   +2 more sources

Circadian clock protein Rev-erbα regulates neuroinflammation

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Significance Disruptions in the circadian clock and its component proteins have been shown to be associated with disease states ranging from cancer to neurodegeneration.
Percy Griffin   +14 more
semanticscholar   +1 more source

Brain-specific rescue of Clock reveals system-driven transcriptional rhythms in peripheral tissue.

open access: yesPLoS Genetics, 2012
The circadian regulatory network is organized in a hierarchical fashion, with a central oscillator in the suprachiasmatic nuclei (SCN) orchestrating circadian oscillations in peripheral tissues.
Michael E Hughes   +7 more
doaj   +1 more source

Heritable gene expression variability and stochasticity govern clonal heterogeneity in circadian period.

open access: yesPLoS Biology, 2020
A ubiquitous feature of the circadian clock across life forms is its organization as a network of cellular oscillators, with individual cellular oscillators within the network often exhibiting considerable heterogeneity in their intrinsic periods.
K L Nikhil, Sandra Korge, Achim Kramer
doaj   +1 more source

Non-circadian expression masking clock-driven weak transcription rhythms in U2OS cells. [PDF]

open access: yesPLoS ONE, 2014
U2OS cells harbor a circadian clock but express only a few rhythmic genes in constant conditions. We identified 3040 binding sites of the circadian regulators BMAL1, CLOCK and CRY1 in the U2OS genome. Most binding sites even in promoters do not correlate
Julia Hoffmann   +5 more
doaj   +1 more source

Solving the mystery of human sleep schedules one mutation at a time. [PDF]

open access: yes, 2013
Sleep behavior remains one of the most enigmatic areas of life. The unanswered questions range from "why do we sleep?" to "how we can improve sleep in today's society?" Identification of mutations responsible for altered circadian regulation of human ...
Fu, Ying-Hui   +2 more
core   +1 more source

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