Résumé:
Hyperhomocysteinemia (HHcy) defined by the increase in the homocysteine (Hcy) level in
the plasma (1), is related with cardiovascular disease, atherosclerosis and reactive oxygen
(2). Our research aims to determine the protective effect of the extract of Astragalus armatus
on antioxidant enzymes in methionine induced Hyperhomocysteinemia in mice, which has
risk factor of cardiovascular diseases, we are looking for whether HHcy leads to
hyperlipidemia and endogenous oxidative stress, and the treatment with the extract of
medicinal plant Astragalus armatus could correct these alterations induced by high dose of L methionine. After 21 days of treatments, Hcy concentration, hepatic antioxidant status were
determined. Consumption of high methionine diet resulted in a significant increase in plasma
Hcy. Furthermore, we detected a decrease in glutathione reduced (GSH) and catalase (CAT)
activities. While the administration of Astragalus armatus extract with L-methionine caused:
a decrease in Hcy concentration and an increase in GSH and CAT activities. Our data showed
that Astragalus armatus extract is effective in: decreasing plasma Hcy levels and reducing
oxidative stress by increasing antioxidant status in mice fed a diet rich in L-methionine
