Results 1 to 10 of about 95,387 (235)

The Prognostic Significance of Sleep and Circadian Rhythm for Myocardial Infarction Outcomes: Case-Control Study

open access: yesJournal of Medical Internet Research
BackgroundMyocardial infarction (MI) is a medical emergency resulting from coronary artery occlusion. Patients with acute MI often experience disturbed sleep and circadian rhythm. Most previous studies assessed the premorbid sleep
Wei-Chih Chin   +8 more
doaj   +2 more sources

Photoperiodism and Circadian Rhythms [PDF]

open access: bronzeCold Spring Harbor Symposia on Quantitative Biology, 1960
K. C. Hamner
openalex   +4 more sources

Circadian rhythms [PDF]

open access: yesBrain Research Reviews, 1993
Circadian rhythms are a ubiquitous adaptation of eukaryotic organisms to the most reliable and predictable of environmental changes, the daily cycles of light and temperature. Prominent daily rhythms in behavior, physiology, hormone levels and biochemistry (including gene expression) are not merely responses to these environmental cycles, however, but ...
Aronson, B. D.   +20 more
openaire   +5 more sources

Sleep and circadian rhythm disturbance in kidney stone disease: a narrative review

open access: yesFrontiers in Endocrinology, 2023
The circadian rhythm generated by circadian clock genes functions as an internal timing system. Since the circadian rhythm controls abundant physiological processes, the circadian rhythm evolved in organisms is salient for adaptation to environmental ...
Si-Ke He   +8 more
doaj   +1 more source

Relationship between circadian rhythm characteristics and chronotypes with multiple sclerosis: literature review

open access: yesNeurologijos seminarai, 2021
Circadian rhythm disorder is described as discrepancy between person’s sleep habits and usual, generally accepted sleep model during 24-hour period. Circadian rhythm disorders affect not only person’s working capacity during the day but also may reduce ...
Ieva Jonušaitė   +3 more
doaj   +1 more source

Research Progress and Effects of Light on Poultry Circadian Rhythm Regulation Based on CiteSpace

open access: yesApplied Sciences, 2023
Light is not only an important environmental regulation factor in poultry growth and development, but it is also a key factor affecting circadian rhythm.
Yue Yu, Zhanming Li
doaj   +1 more source

Circadian rhythms and the liver

open access: yesLiver International, 2023
AbstractThis narrative review briefly describes the mammalian circadian timing system, the specific features of the liver clock, also by comparison with other peripheral clocks, the role of the liver clock in the preparation of food intake, and its relationship with energy metabolism.
Costa, Rodolfo   +4 more
openaire   +3 more sources

AMPK regulates circadian rhythms in a tissue- and isoform-specific manner. [PDF]

open access: yesPLoS ONE, 2011
AMP protein kinase (AMPK) plays an important role in food intake and energy metabolism, which are synchronized to the light-dark cycle. In vitro, AMPK affects the circadian rhythm by regulating at least two clock components, CKIα and CRY1, via direct ...
Jee-Hyun Um   +8 more
doaj   +1 more source

Circadian secretion rhythm of GLP-1 and its influencing factors

open access: yesFrontiers in Endocrinology, 2022
Circadian rhythm is an inherent endogenous biological rhythm in living organisms. However, with the improvement of modern living standards, many factors such as prolonged artificial lighting, sedentarism, short sleep duration, intestinal flora and high ...
Chuanfeng Liu   +3 more
doaj   +1 more source

Wavelengths and irradiances modulate the circadian rhythm of Neurospora crassa.

open access: yesPLoS ONE, 2022
The circadian rhythm affects the biological evolution and operating mechanisms of organisms. The impact of light on the circadian rhythm is a significant concern for both biology and human well-being.
Peijun Wen   +5 more
doaj   +1 more source

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