Results 31 to 40 of about 143,667 (304)
Postnatal constant light compensates Cryptochrome1 and 2 double deficiency for disruption of circadian behavioral rhythms in mice under constant dark. [PDF]
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
Sexual Differentiation of Circadian Clock Function in the Adrenal Gland [PDF]
Sex differences in glucocorticoid production are associated with increased responsiveness of the adrenal gland in females. However, the adrenal-intrinsic mechanisms that establish sexual dimorphic function remain ill defined. Glucocorticoid production is
Evans, Jennifer A. +5 more
core +2 more sources
Programming effects of maternal stress on the circadian system of adult offspring
Circadian rhythms: Maternal stress can disrupt adult offspring’s biological clock When pregnant mothers are stressed, the fetus’s circadian rhythms are reprogrammed, increasing the risk of health complications later in life.
Seongsik Yun +5 more
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Circadian Rhythm Disruption [PDF]
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.
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Circadian rhythm and neurodegenerative disorders
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
Development of circadian oscillators in neurosphere cultures during adult neurogenesis. [PDF]
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
Extraordinary behavioral entrainment following circadian rhythm bifurcation in mice. [PDF]
The mammalian circadian timing system uses light to synchronize endogenously generated rhythms with the environmental day. Entrainment to schedules that deviate significantly from 24 h (T24) has been viewed as unlikely because the circadian pacemaker ...
Gorman, Michael R +5 more
core +2 more sources
Patterns of Activity Expressed by Juvenile Horseshoe Crabs [PDF]
Adult American horseshoe crabs, Limulus polyphemus, possess endogenous circadian and circatidal clocks controlling visual sensitivity and locomotion, respectively.
Chabot, Christopher C. +3 more
core +2 more sources
The role of the circadian rhythms in critical illness with a focus on acute pancreatitis
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
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

