Atividade hipolipidêmica do disseleneto de difenila na hiperlipidemia induzida por Triton WR-1339 em camundongos

• Ano de defesa: 2009
• Autor(a) principal: Rocha, Juliana Trevisan da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Bioquímica; UFSM; Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica
• Palavras-chave em Português: Disseleneto de difenila; Hipercolesterolemia; Estresse oxidativo; Selênio; Triton WR-1339; Diphenyl diselenide; Hypercholesterolaemia; Oxidative stress; Selenium; CNPQ::CIENCIAS BIOLOGICAS::BIOQUIMICA
• Link de acesso: http://repositorio.ufsm.br/handle/1/11115

In mammals, the liver plays a central role in whole-body lipid metabolism. Unfortunately, dysregulation of these pathways has been implicated in hyperlipidemias. In recent years, a significant association between the trace element selenium and hypercholesterolaemia in human and animals has been reported. This study was designed to investigate a potential hypolipidaemic effect of diphenyl diselenide ((PhSe)2) in Triton WR-1339-induced hyperlipidaemia in mice. Triton was administered intraperitoneally (400 mg/kg) to overnight-fasted mice to develop acute hyperlipidaemia. (PhSe)2 was administered orally (10 mg/kg) 30 min before Triton. At 24 h after Triton injection, blood samples were collected to measure plasma lipid levels. The hepatic thiobarbituric acid reactive substances and ascorbic acid levels as well as catalase and glutathione peroxidase activity were recorded. (PhSe)2 administration significantly lowered total cholesterol, non-high- density lipoprotein-cholesterol and triglycerides,whilst it increased high-density lipoprotein-cholesterol levels in plasma of hyperlipidaemic mice. Neither oxidative stress nor the antioxidant effect of (PhSe)2 was observed in the mouse liver in this experimental protocol. These findings indicated that (PhSe)2 was able to lower plasma lipid concentrations. Further studies are needed to elucidate the exact mechanism by which (PhSe)2 exerted its hypolipidaemic effect in the management of hyperlipidaemia.