Results 11 to 20 of about 5,427 (264)

Circadian clocks

open access: yes, 2012
Our understanding of the molecular and cellular organization of the circadian timing system in vertebrates has increased enormously over the past decade.
Cristiano Bertolucci   +16 more
core   +2 more sources

Feeding and circadian clocks [PDF]

open access: yesReproduction Nutrition Development, 2006
The mammalian genome encodes at least a dozen of genes directly involved in the regulation of the feedback loops constituting the circadian clock. The circadian system is built up on a multitude of oscillators organized according to a hierarchical ...
Kaeffer, Bertrand   +3 more
core   +3 more sources

Circadian Clocks: Evolution in the Shadows [PDF]

open access: yesCurrent Biology, 2009
As scientists, we strive for highly controlled conditions. The real world, however, is noisy. Complex networks are a coping mechanism for an erratic environment.
Merrow, Martha, Maas, Marc F. P. M.
openaire   +3 more sources

Circadian Biology: Clocks within Clocks [PDF]

open access: yesCurrent Biology, 2005
A small cluster of approximately 20,000 neurons in the ventral hypothalamus provide the body with key time-keeping signals and drive circadian rhythms. This circadian clock exhibits surprisingly complex substructures, with inputs from the retina, and outputs to other brain structures.
Piggins, Hugh D.   +1 more
openaire   +2 more sources

The Circadian Clock in Lepidoptera [PDF]

open access: yesFrontiers in Physiology, 2021
With approximately 160,000 identified species of butterflies and moths, Lepidoptera are among the most species-rich and diverse insect orders. Lepidopteran insects have fundamental ecosystem functions as pollinators and valuable food sources for countless animals.
Brady D.   +3 more
openaire   +4 more sources

The circadian clock in mammals [PDF]

open access: yesThe Journal of Headache and Pain, 2000
The basic physiological and anatomical basis for circadian rhythms in mammalian behaviour and physiology is introduced. The pathways involved in photic entrainment of the circadian clock are discussed in relation of new findings that identify the molecules that are involved in signalling between the environment and the clock.
ZORDAN, MAURO AGOSTINO, KYRIACOU C. P.
openaire   +4 more sources

Neurodegeneration and the Circadian Clock [PDF]

open access: yesFrontiers in Aging Neuroscience, 2017
Despite varied etiologies and symptoms, several neurodegenerative diseases-specifically, Alzheimer's (AD), Parkinson's (PD), and Huntington's diseases (HDs)-share the common feature of abnormal circadian rhythms, such as those in behavior (e.g., disrupted sleep/wake cycles), physiological processes (e.g., diminished hormone release) and biochemical ...
Hood, Suzanne, Amir, Shimon
openaire   +4 more sources

Circadian Clock and Nutrition

open access: yesNutrients, 2023
Rhythmicity is a fundamental characteristic of every living organism [...]
openaire   +3 more sources

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   +3 more sources

Reciprocal Interactions between Circadian Clocks, Food Intake, and Energy Metabolism

open access: yesBiology, 2023
Like other biological functions, food intake and energy metabolism display daily rhythms controlled by the circadian timing system that comprises a main circadian clock and numerous secondary clocks in the brain and peripheral tissues.
Emma Grosjean   +2 more
doaj   +1 more source

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