Results 31 to 40 of about 342,113 (368)

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

Circadian rhythms and hormonal homeostasis: Pathophysiological implications [PDF]

open access: yes, 2017
Over recent years, a deeper comprehension of the molecular mechanisms that control biological clocks and circadian rhythms has been achieved. In fact, many studies have contributed to unravelling the importance of the molecular clock for the regulation ...
Bruscalupi, Giovannella, Gnocchi, Davide
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

Splice variants of DOMINO control Drosophila circadian behavior and pacemaker neuron maintenance. [PDF]

open access: yes, 2019
Circadian clocks control daily rhythms in behavior and physiology. In Drosophila, the small ventral lateral neurons (sLNvs) expressing PIGMENT DISPERSING FACTOR (PDF) are the master pacemaker neurons generating locomotor rhythms.
Cai, Yao   +8 more
core   +1 more source

Disrupted circadian clocks and altered tissue mechanics in primary human breast tumours

open access: yesBreast Cancer Research, 2018
Background Circadian rhythms maintain tissue homeostasis during the 24-h day-night cycle. Cell-autonomous circadian clocks play fundamental roles in cell division, DNA damage responses and metabolism.
Eleanor Broadberry   +10 more
doaj   +1 more source

In Synch but Not in Step: Circadian Clock Circuits Regulating Plasticity in Daily Rhythms [PDF]

open access: yes, 2016
The suprachiasmatic nucleus (SCN) is a network of neural oscillators that program daily rhythms in mammalian behavior and physiology. Over the last decade much has been learned about how SCN clock neurons coordinate together in time and space to form a ...
Evans, Jennifer A., Gorman, M. R.
core   +2 more sources

Light and circadian regulation of clock components aids flexible responses to environmental signals [PDF]

open access: yes, 2014
The circadian clock measures time across a 24h period, increasing fitness by phasing biological processes to the most appropriate time of day. The interlocking feedback loop mechanism of the clock is conserved across species; however, the number of loops
Akman, Ozgur E   +5 more
core   +2 more sources

Circadian Rhythms in Urinary Functions: Possible Roles of Circadian Clocks? [PDF]

open access: yesInternational Neurourology Journal, 2011
Circadian clocks are the endogenous oscillators that harmonize a variety of physiological processes within the body. Although many urinary functions exhibit clear daily or circadian variation in diurnal humans and nocturnal rodents, the precise ...
Jong-Yun Noh   +8 more
doaj   +1 more source

Clock at the Core of Cancer Development

open access: yesBiology, 2021
To synchronize various biological processes with the day and night cycle, most organisms have developed circadian clocks. This evolutionarily conserved system is important in the temporal regulation of behavior, physiology and metabolism.
Sonal A. Patel, Roman V. Kondratov
doaj   +1 more source

Shell Neurons of the Master Circadian Clock Coordinate the Phase of Tissue Clocks Throughout the Brain and Body [PDF]

open access: yes, 2015
Background: Daily rhythms in mammals are programmed by a master clock in the suprachiasmatic nucleus (SCN). The SCN contains two main compartments (shell and core), but the role of each region in system-level coordination remains ill defined.
Baba, Kenkichi   +14 more
core   +2 more sources

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