Results 91 to 100 of about 195,357 (242)

Urban-like night illumination reduces melatonin release in European blackbirds (Turdus merula): implications of city life for biological time-keeping of songbirds [PDF]

open access: yes, 2013
<p>Introduction: Artificial light-at-night is known to affect a broad array of behaviours and physiological processes. In urbanized bird species, light-at-night advances important biological rhythms such as daily cycles of activity/rest and timing
Dominoni, D.M.   +3 more
core   +2 more sources

Melatonin as an anti-stress signal: effects on an acute stress model and direct actions on interrenal tissue in goldfish

open access: yesFrontiers in Endocrinology
BackgroundMelatonin is a key hormone in regulation of circadian rhythms, and involved in many rhythmic functions, such as feeding and locomotor activity. Melatonin reportedly counteracts stress responses in many vertebrates, including fish.
Clara Azpeleta   +5 more
doaj   +1 more source

The role of melatonin in diabetes: therapeutic implications

open access: yesArchives of Endocrinology and Metabolism, 2015
Melatonin referred as the hormone of darkness is mainly secreted by pineal gland, its levels being elevated during night and low during the day. The effects of melatonin on insulin secretion are mediated through the melatonin receptors (MT1 and MT2).
Shweta Sharma   +4 more
doaj   +1 more source

Rythme nycthéméral de la sécrétion de mélatonine chez le dromadaire (Camelus dromedarius) [PDF]

open access: yes, 1997
La mélatonine, une hormone secrétée par la glande pinéale, a été dosée sur trois chamelles vivant dans le Sud de la France. Comme pour les autres espèces domestiques, les résultats montrent qu'il existe un rythme nycthéméral de la sécrétion de cette ...
Chemineau, P.   +3 more
core  

Photoperiodic influences on ultradian rhythms of male Siberian hamsters. [PDF]

open access: yes, 2012
Seasonal changes in mammalian physiology and behavior are proximately controlled by the annual variation in day length. Long summer and short winter day lengths markedly alter the amplitude of endogenous circadian rhythms and may affect ultradian ...
Prendergast, Brian, ZUCKER, Irving
core   +2 more sources

Suppressive effect of melatonin administration on ethanol‐induced gastroduodenal injury in rats in vivo [PDF]

open access: bronze, 1997
Daniela Melchiorri   +5 more
openalex   +1 more source

Melatonin Treatment Enhances the Polyphenol Content and Antioxidant Capacity of Red Wine

open access: yesHorticultural Plant Journal, 2018
Melatonin and polyphenols are strong antioxidants, and melatonin is also a potential plant growth regulator. The role of melatonin in regulating polyphenol metabolism is unclear. This study assessed the primary impacts of exogenous melatonin treatment on
Lili XU   +4 more
doaj   +1 more source

The Effect of Melatonin on Behavioral, Molecular, and Histopathological Changes in Cuprizone Model of Demyelination [PDF]

open access: yes, 2016
Multiple sclerosis (MS) is an autoimmune, demyelinating disease of the central nervous system. The protective effects of melatonin (MLT) on various neurodegenerative diseases, including MS, have been suggested.
Ghadiri, T.   +6 more
core  

Effect of Melatonin on Ovarian Function by Over-expression and Down -Regulation of Genes Related to Steroidogenesis in Pinealectomized Rats [PDF]

open access: bronze, 2014
CC Maganhin   +9 more
openalex   +1 more source

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