Results 11 to 20 of about 335,217 (225)

Identification of novel light-induced genes in the suprachiasmatic nucleus [PDF]

BMC Neuroscience, 2007
Background The transmission of information about the photic environment to the circadian clock involves a complex array of neurotransmitters, receptors, and second messenger systems.
Piontkivska Helen, Porterfield Veronica M, Mintz Eric M   +2 more
doaj   +2 more sources

Effects of ionophoretically applied bombesin-like peptides on hamster suprachiasmatic nucleus neurons in vitro

, 1994
Ionophoresis of the smaller bombesin-like peptides (gastrin releasing peptide [GRP]-(18-27), neuromedin B, and bombesin) evoked responses from 30-60% of hamster suprachiasmatic nucleus cells recorded in a hypothalamic slice preparation, depending on the ...
Piggins, Hugh D., Cutler, David J., Rusak, Benjamin   +2 more
core   +10 more sources

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

The 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

GABAergic signalling in the suprachiasmatic nucleus is required for coherent circadian rhythmicity. [PDF]

Eur J Neurosci
The suprachiasmatic nucleus is the circadian pacemaker of the mammalian brain. Suprachiasmatic nucleus neurons display synchronization of their firing frequency on a circadian timescale, which is required for the pacemaker function of the suprachiasmatic
Klett N, Gompf HS, Allen CN, Cravetchi O, Hablitz LM, Gunesch AN, Irwin RP, Todd WD, Saper CB, Fuller PM.   +9 more
europepmc   +2 more sources

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

Nature 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, Sneha Chaturvedi, Daniel Granados-Fuentes, Erik D. Herzog   +3 more
doaj   +1 more source

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

Nature 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, Anne Venner, Christelle Anaclet, Rebecca Y. Broadhurst, Roberto De Luca, Sathyajit S. Bandaru, Lindsay Issokson, Lauren M. Hablitz, Olga Cravetchi, Elda Arrigoni, John N. Campbell, Charles N. Allen, David P. Olson, Patrick M. Fuller   +13 more
doaj   +1 more source

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

Biology, 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, Delaney Beckner, Xavier Bonnefont   +2 more
doaj   +1 more source

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

PLoS 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, Sean T Anderson, Paul N Moynagh, Andrew N Coogan   +3 more
doaj   +1 more source

Global parameter search reveals design principles of the mammalian circadian clock [PDF]

, 2008
Background: Virtually all living organisms have evolved a circadian (~24 hour) clock that controls physiological and behavioural processes with exquisite precision throughout the day/night cycle.
Locke, James C. W., Kramer, Achim, Herzel, Hanspeter, Westermark, Pål O.   +3 more
core   +1 more source

Masking effect in rats bearing partial lesions of the suprachiasmatic nucleus

Sleep 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, Jorge M. Amaya, Ruud M. Buijs, Carolina Escobar   +3 more
doaj   +1 more source