Results 21 to 30 of about 64,689 (160)

Postnatal constant light compensates Cryptochrome1 and 2 double deficiency for disruption of circadian behavioral rhythms in mice under constant dark. [PDF]

open access: yesPLoS ONE, 2013
Clock genes Cryptochrome (Cry1) and Cry2 are essential for expression of circadian rhythms in mice under constant darkness (DD). However, circadian rhythms in clock gene Per1 expression or clock protein PER2 are detected in the cultured suprachiasmatic ...
Daisuke Ono, Sato Honma, Ken-Ichi Honma
doaj   +1 more source

Development of circadian oscillators in neurosphere cultures during adult neurogenesis. [PDF]

open access: yesPLoS ONE, 2015
Circadian rhythms are common in many cell types but are reported to be lacking in embryonic stem cells. Recent studies have described possible interactions between the molecular mechanism of circadian clocks and the signaling pathways that regulate stem ...
Astha Malik   +3 more
doaj   +1 more source

Circadian Rhythm Disruption [PDF]

open access: yesAAOHN Journal, 2011
The circadian rhythm is a 24-hour cycle subject to outside influences. Disruptions of this cycle (e.g., shift work and international travel) have implications for occupational health nurses.
openaire   +2 more sources

Circadian rhythm and neurodegenerative disorders

open access: yesBrain Science Advances, 2020
The circadian clock controls daily rhythms in animal physiology, metabolism, and behavior, such as the sleep‐wake cycle. Disruption of circadian rhythms has been revealed in many diseases including neurodegenerative disorders.
Michelle Werdann, Yong Zhang
doaj   +1 more source

The role of the circadian rhythms in critical illness with a focus on acute pancreatitis

open access: yesHeliyon, 2023
Circadian rhythms are responsible for governing various physiological processes, including hormone secretion, immune responses, metabolism, and the sleep/wake cycle.
Heather Waddell   +2 more
doaj   +1 more source

Plant Circadian Rhythms [PDF]

open access: yesThe Plant Cell, 2006
The earth rotates on its axis every 24 h, with the result that any position on the earth's surface alternately faces toward or away from the sun—day and night. That the metabolism, physiology, and behavior of most organisms changes profoundly between day and night is obvious to even the ...
openaire   +2 more sources

Circadian rhythms in thrombosis and atherothrombotic events

open access: yesFrontiers in Bioscience-Landmark, 2022
Biological circadian rhythms in living organisms are regulated by molecular clocks. Several of these clocks are present in blood vessels, peripheral tissues, and immune cells.
Eduardo Peñaloza-Martínez   +7 more
doaj   +1 more source

Circadian Rhythms and Mood Disorders: Are The Phenomena and Mechanisms Causally Related?

open access: yesFrontiers in Psychiatry, 2015
This paper reviews some of the compelling evidence of disrupted circadian rhythms in individuals with mood disorders (major depressive disorder, seasonal affective disorder, and bipolar disorder) and that treatments such as bright light, designed to ...
William eBechtel
doaj   +1 more source

Mechanism for 12 Hr Rhythm Generation by the Circadian Clock

open access: yesCell Reports, 2013
In addition to the well-known circadian rhythms in animal behavior, cell biology, and gene expression, there are also 12 hr rhythms. The mechanism giving rise to these 12 hr rhythms is not clear.
Pål O. Westermark, Hanspeter Herzel
doaj   +1 more source

Pathophysiological Models of Hypersomnolence Associated With Depression

open access: yesBiological Psychiatry Global Open Science
Up to 25% of patients with depression experience hypersomnolence (e.g., excessive daytime sleepiness, hypersomnia, and/or sleep inertia), which is associated with treatment resistance, overall poorer outcomes, and safety concerns while driving ...
Christophe Moderie, Diane B. Boivin
doaj   +1 more source

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