Articles with "circadian system" as a keyword



Chronobiology of Exercise: Evaluating the Best Time to Exercise for Greater Cardiovascular and Metabolic Benefits.

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Published in 2022 at "Comprehensive Physiology"

DOI: 10.1002/cphy.c210036

Abstract: Physiological function fluctuates across 24 h due to ongoing daily patterns of behaviors and environmental changes, including the sleep/wake, rest/activity, light/dark, and daily temperature cycles. The internal circadian system prepares the body for these anticipated behavioral… read more here.

Keywords: chronobiology; cardiovascular metabolic; metabolic benefits; circadian system ... See more keywords

The SSRI citalopram increases the sensitivity of the human circadian system to light in an acute dose

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Published in 2018 at "Psychopharmacology"

DOI: 10.1007/s00213-018-5019-0

Abstract: RationaleDisturbances of the circadian system are common in depression. Though they typically subside when depression is treated with antidepressants, the mechanism by which this occurs is unknown. Despite being the most commonly prescribed class of… read more here.

Keywords: human circadian; circadian system; sensitivity; citalopram ... See more keywords

Eat, sleep, repeat: the role of the circadian system in balancing sleep–wake control with metabolic need

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Published in 2020 at "Current Opinion in Physiology"

DOI: 10.1016/j.cophys.2020.02.003

Abstract: Feeding and sleep are behaviours fundamental to survival, and as such are subject to powerful homeostatic control. Of course, these are mutually exclusive behaviours, and therefore require coordinated temporal organisation to ensure that both energy… read more here.

Keywords: energy; control; role circadian; circadian system ... See more keywords

Impact of mental stress, the circadian system and their interaction on human cardiovascular function

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Published in 2019 at "Psychoneuroendocrinology"

DOI: 10.1016/j.psyneuen.2019.01.016

Abstract: The risk for adverse cardiovascular events (e.g., myocardial infarction, sudden cardiac death) peaks in the morning, possibly due to the effects of the endogenous circadian system on cardiovascular risk factors, or the occurrence in the… read more here.

Keywords: mental stress; stress; morning; function ... See more keywords

Can exercise regulate the circadian system of adolescents? Novel implications for the treatment of delayed sleep-wake phase disorder.

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Published in 2017 at "Sleep medicine reviews"

DOI: 10.1016/j.smrv.2016.06.010

Abstract: Adolescents are vulnerable to inadequate sleep due to a unique constellation of risk factors. In particular, the puberty-related phase delay in the timing of the circadian system postpones the onset of sleep. Resultantly, disordered sleep… read more here.

Keywords: sleep wake; phase; wake phase; delayed sleep ... See more keywords

Exposing 24-hour cycles in bile acids of male humans

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Published in 2024 at "Nature Communications"

DOI: 10.1038/s41467-024-53673-9

Abstract: Bile acids are trans-genomic molecules arising from the concerted metabolism of the human host and the intestinal microbiota and are important for digestion, energy homeostasis and metabolic regulation. While diurnal variation has been demonstrated in… read more here.

Keywords: bile acids; hour cycles; circadian system; bile acid ... See more keywords

Involvement of cortisol and sirtuin1 during the response to stress of hypothalamic circadian system and food intake-related peptides in rainbow trout, Oncorhynchus mykiss

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Published in 2018 at "Chronobiology International"

DOI: 10.1080/07420528.2018.1461110

Abstract: ABSTRACT Stress is conditioning animal welfare by negatively affecting a wide range of physiological and behavioral functions. This may be applied to circadian physiology and food intake. Cortisol, the stress-related hormone, may mediate such effect… read more here.

Keywords: cortisol; food intake; stress; food ... See more keywords

Constant light during lactation programs circadian and metabolic systems

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Published in 2018 at "Chronobiology International"

DOI: 10.1080/07420528.2018.1465070

Abstract: ABSTRACT Exposure to light at night is a disruptive condition for the adult circadian system, leading to arrhythmicity in nocturnal rodents. Circadian disruption is a risk factor for developing physiological and behavioral alterations, including weight… read more here.

Keywords: light lactation; term; long term; constant light ... See more keywords

Circadian system responses to nocturnal and diurnal hosts in the kissing bug, Triatoma infestans

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Published in 2018 at "Chronobiology International"

DOI: 10.1080/07420528.2018.1486851

Abstract: ABSTRACT Insects express diverse behavioral rhythms synchronized to environmental cycles. While circadian entrainment to light–dark cycles is ubiquitous in living organisms, synchronization to non-photic cycles may be critical for hematophagous bugs that depend on rhythmic… read more here.

Keywords: insects; host; nocturnal diurnal; triatoma infestans ... See more keywords

0008 The endogenous circadian system provides for enhanced coronary microvascular function in the morning

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Published in 2023 at "SLEEP"

DOI: 10.1093/sleep/zsad077.0008

Abstract: Major adverse cardiovascular events occur most commonly in the morning compared to other times of the day or night. Evaluation of coronary microvascular reserve perfusion can be used to reflect the anatomic and functional status… read more here.

Keywords: circadian system; microvascular function; morning; coronary microvascular ... See more keywords

Duration invariance and intensity dependence of the human circadian system phase shifting response to brief light flashes

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Published in 2022 at "Proceedings of the Royal Society B: Biological Sciences"

DOI: 10.1098/rspb.2021.1943

Abstract: The melanopsin-containing intrinsically photosensitive retinal ganglion cells (ipRGCs) are characterized by a delayed off-time following the cessation of light stimulation. Here, we exploited this unusual physiologic property to characterize the exquisite sensitivity of the human… read more here.

Keywords: circadian system; human circadian; phase; intensity ... See more keywords