Your browser doesn't support javascript.
loading
Effects of Mangifera indica L. aqueous extract (Vimang) on primary culture of rat hepatocytes.
Rodeiro, I; Donato, M T; Jiménez, N; Garrido, G; Delgado, R; Gómez-Lechón, M J.
Afiliação
  • Rodeiro I; Laboratory of Pharmacology, Department of Biomedical Investigations, Center of Pharmaceutical Chemistry, P.O. Box 16042, Havana, Cuba.
Food Chem Toxicol ; 45(12): 2506-12, 2007 Dec.
Article em En | MEDLINE | ID: mdl-17651882
Vimang is an aqueous extract from stem bark of Mangifera indica L. (Mango) with pharmacological properties. It is a mixture of polyphenols (as main components), terpenoids, steroids, fatty acids and microelements. In the present work we studied the cytotoxic effects of Vimang on rat hepatocytes, possible interactions of the extract with drug-metabolizing enzymes and its effects on GSH levels and lipid peroxidation. No cytotoxic effects were observed after 24 h exposure to Vimang of up to 1000 microg/mL, while a moderate cytotoxicity was observed after 48 and 72 h of exposure at higher concentrations (500 and 1000 microg/mL). The effect of the extract (50-400 microg/mL) on several P450 isozymes was evaluated. Exposure of hepatocytes to Vimang at concentrations of up to 100 microg/mL produced a significant reduction (60%) in 7-methoxyresorufin-O-demethylase (MROD; CYP1A2) activity, an increase (50%) in 7-penthoxyresorufin-O-depentylase (PROD; CYP2B1) activity, while no significant effect was observed with other isozymes. To our knowledge, this is the first report regarding the modulation of the activity of the P450 system by an extract of Mangifera indica L. The antioxidant properties of Vimang were also evaluated in t-butyl-hydroperoxide-treated hepatocytes. A 36-h pre-treatment of cells with Vimang (25-200 microg/mL) strongly inhibited the decrease of GSH levels and lipid peroxidation induced by t-butyl-hydroperoxide dose- and time-dependently.
Assuntos
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Extratos Vegetais / Peroxidação de Lipídeos / Mangifera / Fitoterapia / Antioxidantes Limite: Animals Idioma: En Revista: Food Chem Toxicol Ano de publicação: 2007 Tipo de documento: Article País de afiliação: Cuba País de publicação: Reino Unido
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Extratos Vegetais / Peroxidação de Lipídeos / Mangifera / Fitoterapia / Antioxidantes Limite: Animals Idioma: En Revista: Food Chem Toxicol Ano de publicação: 2007 Tipo de documento: Article País de afiliação: Cuba País de publicação: Reino Unido