Results 131 to 140 of about 519,483 (296)
Cell Biology International, Volume 49, Issue 6, Page 659-673, June 2025.ABSTRACT Alzheimer's disease (AD) is prevalent in the elderly population and characterized by the intracellular accumulation of neurofibrillary tangles (NFTs), composed of tau proteins, and extracellular deposition of beta‐amyloid protein (Aβ). The present study aimed to investigate the neuroprotective effects of melatonin on Aβ42‐induced AD‐like ...
Jiraporn Panmanee +11 more
wiley +1 more source
Induction of dark-adaptive retinomotor movement (cell elongation) in teleost retinal cones by cyclic adenosine 3,5-monophosphate. [PDF]
, 1982 In the teleost retina, the photoreceptors and retinal pigment epithelium (RPE) undergo extensive movements (called retinomotor movements) in response to changes in light conditions and to an endogenous circadian rhythm.
BURNSIDE, Beth +3 more
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A brief review about melatonin, a pineal hormone
Archives of Endocrinology and Metabolism, 2018 Melatonin is a ubiquitous molecule in nature, being locally synthesized in several cells and tissues, besides being a hormone that is centrally produced in the pineal gland of vertebrates, particularly in mammals.
F. G. do Amaral, J. Cipolla-Neto
semanticscholar +1 more source
Ecology and Evolution, Volume 15, Issue 6, June 2025.This study investigates the seasonal variations in fecal microbiota and metabolites of captive Yangtze finless porpoises (YFP) during breeding (B) and nonbreeding (NB) seasons using 16S rRNA gene sequencing and UHPLC–MS/MS analysis. Firmicutes were dominant in NB, while Actinobacteria, Proteobacteria, and Fusobacteriota increased in B.
Syed Ata Ur Rahman Shah +8 more
wiley +1 more source
Biomolecules & Biomedicine, 2006 The aim of our study was to determine, using histological and stereological methods, whether photoperiodism has any impact on the effects that chronic (three-month long) exposure to LF-EMF (50Hz) has on morphological characteristics on rat's pineal ...
Tamara Lukač +4 more
doaj +1 more source
Rythme nycthéméral de la sécrétion de mélatonine chez le dromadaire (Camelus dromedarius) [PDF]
, 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
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Molecular rhythms in the pineal gland
Current Opinion in Neurobiology, 1998 Recent findings have clarified the mechanisms regulating the night- and pineal-specific transcription of serotonin N-acetyltransferase, the rate-limiting enzyme in melatonin formation. Norepinephrine, acting via beta-adrenoceptors and cAMP at night, stimulates the cAMP response element binding protein, which turns on the transcription of N ...
Solomon H. Snyder +2 more
openaire +3 more sources
Journal of Cachexia, Sarcopenia and Muscle, Volume 16, Issue 3, June 2025.ABSTRACT Introduction Gut dysbiosis is closely related to the development of sarcopenic obesity (SO). Melatonin (MLT) regulates gut microbiota and promotes the production of short‐chain fatty acids (SCFAs). However, whether MLT affects SO through the gut microbiota and SCFAs remains unclear.
Xiaoxing Mo +10 more
wiley +1 more source
Циркадианный ритм мелатонинобразующей функции эпифиза при опухолевых заболеваниях: связь с ритмичностью функционального состояния тимуса и коры надпочечников [PDF]
, 2007 Исследованы циркадианные колебания концентрации мелатонина (М) и кортизола, титра тимического сыворточного фактора (ТСФ) у больных раком пишевода и кардии в возрасте от 50 до 73 лет.
Гриневич, Ю.А. +4 more
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