Results 11 to 20 of about 34,337 (216)

Immunohistochemical Identification of Oxytocin Neurons in the Suprachiasmatic Nucleus of the Male and Female Albino Rats: A Morphometrical Study [PDF]

open access: yesThe Egyptian Journal of Histology, 2019
Background: The suprachiasmatic nucleus (SCN) is one of the nuclei in the anterior hypothalamus superior to the optic chiasma. It is well known that vasopressin and oxytocin neurons are located in the hypothalamic para-ventricular and the supraoptic ...
Hagar Hashish
doaj   +1 more source

Circadian neurons in the paraventricular nucleus entrain and sustain daily rhythms in glucocorticoids

open access: yesNature Communications, 2021
It is unclear how circadian signals from the suprachiasmatic nucleus (SCN) are decoded to generate daily rhythms in hormone release. Here, the authors show that daily corticosterone release depends on coordinated clock gene and neuronal activity rhythms ...
Jeff R. Jones   +3 more
doaj   +1 more source

A Journey in the Brain’s Clock: In Vivo Veritas?

open access: yesBiology, 2023
The suprachiasmatic nuclei (SCN) of the hypothalamus contain the circadian pacemaker that coordinates mammalian rhythms in tune with the day-night cycle.
Alec J. Davidson   +2 more
doaj   +1 more source

The neurobiology of circadian rhythms [PDF]

open access: yes, 2009
Purpose of review There is growing awareness of the importance of circadian rhythmicity in various research fields. Exciting developments are ongoing in the field of circadian neurobiology linked to sleep, food intake, and memory.
Boersma, Gretha J.,   +2 more
core   +9 more sources

Long-lasting effects of sepsis on circadian rhythms in the mouse. [PDF]

open access: yesPLoS ONE, 2012
Daily patterns of activity and physiology are termed circadian rhythms and are driven primarily by an endogenous biological timekeeping system, with the master clock located in the suprachiasmatic nucleus.
Emma K O'Callaghan   +3 more
doaj   +1 more source

Suprachiasmatic VIP neurons are required for normal circadian rhythmicity and comprised of molecularly distinct subpopulations

open access: yesNature Communications, 2020
Cell groups in the hypothalamic suprachiasmatic clock contribute to the genesis of circadian rhythms. The authors identified two populations of vasoactive intestinal polypeptide-expressing neurons in the suprachiasmatic nucleus which regulate locomotor ...
William D. Todd   +13 more
doaj   +1 more source

Ablation of microglia does not alter circadian rhythm of locomotor activity

open access: yesMolecular Brain, 2023
Microglia, as macrophages in the brain, are responsible for immune responses and synaptic remodeling. Although the function of microglia is regulated by circadian rhythms, it is still unclear whether microglia are involved in the generation and light ...
Futaba Matsui   +6 more
doaj   +1 more source

Rhythmic firing patterns in SCN: The role of circuit interactions [PDF]

open access: yes, 1995
The suprachiasmatic nucleus (SCN) is believed to contain the main generator of circadian rhythmicity in mammals. In order to obtain further functional details of this, electrophysiological extracellular measurements in vitro were made.
Aguilar-Roblero, R.   +3 more
core   +2 more sources

Masking effect in rats bearing partial lesions of the suprachiasmatic nucleus

open access: yesSleep Science, 2010
Background and objective: To explore the role of the suprachiasmatic nucleus (SCN) for masking by light in rats bearing bilateral complete or partial lesions of the suprachiasmatic nucleus. Methods: Rats were submitted to electrolytic SCN
Manuel Ángeles-Castellanos   +3 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

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