Results 31 to 40 of about 336,986 (421)

Organoids as Model Systems to Investigate Circadian Clock-Related Diseases and Treatments

open access: yesFrontiers in Genetics, 2022
Circadian rhythms exist in most cell types in mammals regulating temporal organization of numerous cellular and physiological processes ranging from cell cycle to metabolism.
Suengwon Lee, Christian I. Hong
doaj   +1 more source

Coupled network of the circadian clocks: a driving force of rhythmic physiology

open access: yesFEBS Letters, 2020
The circadian system is composed of coupled endogenous oscillators that allow living beings, including humans, to anticipate and adapt to daily changes in their environment.
Anna-Marie Finger, C. Dibner, A. Kramer
semanticscholar   +1 more source

Circadian Clocks and Pregnancy [PDF]

open access: yesFrontiers in Endocrinology, 2014
The recognition that 24-h rhythmic processes (“circadian”) underlie many endocrine functions has added a fascinating new temporal dimension to our appreciation of their complexity. Research from various laboratories has revealed circadian gene expression in multiple tissues in the reproductive system of non-pregnant and pregnant mammals.
openaire   +4 more sources

Setting the biological time in central and peripheral clocks during ontogenesis [PDF]

open access: yes, 2006
In mammals, the principal circadian clock within the suprachiasmatic nucleus (SCN) entrains the phase of clocks in numerous peripheral tissues and controls the rhythmicity in various body functions. During ontogenesis, the molecular mechanism responsible
Bendová, Zdenka   +6 more
core   +1 more source

Rodent models for the analysis of tissue clock function in metabolic rhythms research [PDF]

open access: yes, 2017
The circadian timing system consists on a distributed network of cellular clocks that together coordinate 24-h rhythms of physiology and behavior. Clock function and metabolism are tightly coupled, from the cellular to the organismal level.
Astiz, Mariana   +3 more
core   +2 more sources

Importance of circadian timing for aging and longevity

open access: yesNature Communications, 2021
Circadian clocks link physiologic processes to environmental conditions and a mismatch between internal and external rhythms has negative effects on organismal health.
Victoria A. Acosta-Rodríguez   +3 more
doaj   +1 more source

Making Memories: Why Time Matters [PDF]

open access: yes, 2018
In the last decade advances in human neuroscience have identified the critical importance of time in creating long-term memories. Circadian neuroscience has established biological time functions via cellular clocks regulated by photosensitive retinal ...
Evans, M. D. R.   +2 more
core   +2 more sources

Central and peripheral circadian clocks in mammals.

open access: yesAnnual Review of Neuroscience, 2012
The circadian system of mammals is composed of a hierarchy of oscillators that function at the cellular, tissue, and systems levels. A common molecular mechanism underlies the cell-autonomous circadian oscillator throughout the body, yet this clock ...
J. Mohawk, C. Green, J. Takahashi
semanticscholar   +1 more source

Rhythms of Locomotion Expressed by Limulus polyphemus, the American Horseshoe Crab: II. Relationship to Circadian Rhythms of Visual Sensitivity [PDF]

open access: yes, 2008
In the laboratory, horseshoe crabs express a circadian rhythm of visual sensitivity as well as daily and circatidal rhythms of locomotion. The major goal of this investigation was to determine whether the circadian clock underlying changes in visual ...
Bedford, Lisa   +2 more
core   +3 more sources

Neuroimmunology of the circadian clock

open access: yesBrain Research, 2008
Circadian timekeeping is a ubiquitous feature of all eukaryotes which allows for the imposition of a biologically appropriate temporal architecture on an animal's physiology, behavior and metabolism. There is growing evidence that in mammals the processes of circadian timing are under the influence of the immune system.
Coogan, Andrew, Wyse, Cathy A.
openaire   +4 more sources

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