Sleep deprivation reduces total plasma homocysteine levels in rats

Sleep deprivation reduces total plasma homocysteine levels in rats

Autor Oliveira, A. C. de Autor UNIFESP Google Scholar
D'Almeida, V Autor UNIFESP Google Scholar
Hipolide, D. C. Autor UNIFESP Google Scholar
Nobrega, J. N. Google Scholar
Tufik, Sergio Autor UNIFESP Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Ctr Addict & Mental Hlth
Resumo Hyperhomocysteinemia has been associated with pathological and stressful conditions and is a risk factor for cardiovascular disease. Since sleep deprivation is a stressful condition that is associated with disruption of various physiological processes, we investigated whether it would also be associated with increases in plasma homocysteine levels. Further, since hyperhomocysteinemia may promote oxidative stress, and we had previously found evidence of oxidative stress in brain following sleep deprivation, we also searched for evidence of systemic oxidative stress by measuring glutathione and thiobarbituric acid reactive substance levels. Rats were sleep deprived for 96 h using the platform technique. A group was killed after sleep deprivation and another two groups were allowed to undergo sleep recovery for 24 or 48 h. Contrary to expectation, plasma homocysteine was reduced in sleep-deprived rats as compared with the control group and did not revert to normal levels after 24 or 48 h of sleep recovery. A trend was observed towards decreased glutathione and increased thiobarbituric acid reactive substance levels in sleep-deprived rats. It is possible that the observed decreases in homocysteine levels may represent a self-correcting response to depleted glutathione in sleep-deprived animals, which would contribute to the attenuation of the deleterious effects of sleep deprivation.
Palavra-chave sleep deprivation
homocysteine
oxidative stress
glutathione
rats
Idioma Inglês
Data de publicação 2002-03-01
Publicado em Canadian Journal of Physiology and Pharmacology. Ottawa: Natl Research Council Canada, v. 80, n. 3, p. 193-197, 2002.
ISSN 0008-4212 (Sherpa/Romeo, fator de impacto)
Publicador Natl Research Council Canada
Extensão 193-197
Fonte http://dx.doi.org/10.1139/Y02-018
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000174559700003
Endereço permanente http://repositorio.unifesp.br/handle/11600/26761

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