Abstract
The main aim of this study was to investigate the beneficial effects of hydro-alcoholic extract of Caralluma fimbriata (CFE) on the effects of high-fat diet feeding on insulin resistance and oxidative stress in Wistar rats. High-fat diet (60% of fat) and CFE (200 mg/kg body weight/day) were given concurrently to the rats for a period of 90 days. Feeding with high-fat diet resulted in the development of hyperglycemia, hyperinsulinemia, hyperleptinemia, and hypertriglyceridemia and impaired insulin sensitivity (P < 0.05). Administration of CFE to high-fat diet-fed rats for 90 days resulted in a significant improvement in plasma glucose, insulin, leptin, and triglycerides. Regarding liver antioxidant status, high-fat fed rats showed higher levels of lipid peroxidation, protein oxidation and lower GSH levels and lower activities of enzymatic antioxidants, while CFE treatment prevented all these observed abnormalities. In conclusion, intake of CFE may be beneficial for the suppression of high-fat diet-induced insulin resistance and oxidative stress.
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