Clinical research has confirmed the efficacy of several plant extracts in the modulation of oxidative stress associated with diabetes mellitus (DM). Oil of Eruca sativa seeds (ESS) is tried for prevention and treatment of DM induced experimentally by alloxan injection. A single dose of alloxan (100 mg/kg) produced a decrease in insulin level, hyperglycemia, elevated total lipids, triglycerides and cholesterol, decreased high-density lipoprotein and hepatic glycogen contents and elevated hepatic glucose-6-phosphatase activity. Concurrent with these changes, there was an increase in the concentration of malondialdehyde and 4-hydroxynonenal in the liver. This oxidative stress was related to a decreased glutathione (GSH) content and superoxide dismutase activity in the liver of alloxan-diabetic rats. ESS oil (0.06 ml/kg) on its own increased significantly hepatic GSH. Daily oral administration of ESS oil 2 weeks before or after diabetes induction ameliorated hyperglycemia, improved lipid profile, blunted the increase in malondialdehyde and 4-hydroxynonenal and stimulated the GSH production in the liver of alloxan-treated rats. We suggested that ESS oil could be used as antidiabetic complement in case of DM. This may be related to its antioxidative properties and to the increase in hepatic GSH.

Keywords:
Eruca sativa seed oil, Alloxan, Insulin, Glucose, Lipids, Free radicals, Glutathione, Superoxide dismutase, Lipid peroxidation
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© 2000 S. Karger AG, Basel
2000
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