Results 41 to 50 of about 346,110 (185)

Body-temperature circadian rhythm in 67 patients after heart valve replacement surgery secondary to valvular heart disease

open access: yesInternational Journal of Nursing Sciences, 2014
Purpose: Patient body temperature was monitored after cardiac valve replacement, in order to explore the characteristics of body-temperature circadian rhythm and the factors influencing that rhythm.
Xiao-Ying Jiang, Cong Wang
doaj   +1 more source

Relations between depressed mood and vocal parameters before, during and after sleep deprivation: a circadian rhythm study [PDF]

open access: yes, 1990
The mechanism underlying improvement after total sleep deprivation (TSD) was studied in 14 major depressed patients. The suggestions that (1) circadian processes and/or (2) dimensions of arousal may play a role in the response to TSD were investigated ...
BEERSMA, DGM   +7 more
core   +1 more source

The hormonal Zeitgeber melatonin: role as a circadian modulator in memory processing [PDF]

open access: yes, 2012
The neuroendocrine substance melatonin is a hormone synthesized rhythmically by the pineal gland under the influence of the circadian system and alternating light/dark cycles. Melatonin has been shown to have broad applications, and consequently becoming
Rawashdeh, Oliver   +5 more
core   +1 more source

Arrhythmic perch hopping and rhythmic feeding of starlings in constant light: Separate circadian oscillators? [PDF]

open access: yes, 1984
Perch hopping activity and food intake were recorded in starlings in different intensities of continuous illumination (LL), varying from 0.1 to 1000 lux. Circadian rhythmicity in perch hopping disappeared in 10 lux and all higher intensities. In contrast,
Gänshirt, G.,   +9 more
core   +1 more source

ELF4 is required for oscillatory properties of the circadian clock [PDF]

open access: yes, 2007
Circadian clocks are required to coordinate metabolism and physiology with daily changes in the environment. Such clocks have several distinctive features, including a free-running rhythm of approximately 24 h and the ability to entrain to both light or ...
Nagy, Ferenc   +22 more
core   +1 more source

Closed-loop cascade nanozyme strategy for mutually reinforced catalytic and mild-temperature photothermal therapeutic effects

open access: yesJournal of Nanobiotechnology
Nanocatalysis coupled with photothermal therapy is a potent anti-cancer approach, yet its clinical utility is limited by low concentration of tumor substrate, redox interference, and risks of overheating normal tissues.
Fan Yang   +7 more
doaj   +1 more source

Therapeutic potential of ginsenosides in circadian rhythm-based skin disorders

open access: yesJournal of Ginseng Research
The circadian rhythm, a biological system all living organisms possess, has become increasingly important as sleep patterns become more irregular. Circadian rhythms affect various cell types (fibroblasts, fat cells, muscles, etc.) and organs (the liver ...
Heejun Ha   +8 more
doaj   +1 more source

Circadian Rhythm Sleep Disorders [PDF]

open access: yesPsikiyatride Güncel Yaklaşımlar, 2016
The circadian rhythm sleep disorders define the clinical conditions where sleep and ndash;wake rhythm is disrupted despite optimum environmental and social conditions.
Erhan Akinci, Fatma Ozlem Orhan
doaj   +1 more source

Circadian Rhythms in Cyanobacteria [PDF]

open access: yesMicrobiology and Molecular Biology Reviews, 2015
SUMMARY Life on earth is subject to daily and predictable fluctuations in light intensity, temperature, and humidity created by rotation of the earth. Circadian rhythms, generated by a circadian clock, control temporal programs of cellular physiology to facilitate adaptation to daily environmental changes.
Cohen, Susan E, Golden, Susan S
openaire   +4 more sources

Serotonin and corticosterone rhythms in mice exposed to cigarette smoke and in patients with COPD:implication for COPD-associated neuropathogenesis [PDF]

open access: yes, 2014
The circadian timing system controls daily rhythms of physiology and behavior, and disruption of clock function can trigger stressful life events. Daily exposure to cigarette smoke (CS) can lead to alteration in diverse biological and physiological ...
Hongwei Yao   +20 more
core   +1 more source

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