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J Ethnopharmacol. 2003 Apr;85(2-3):201-6.

Hypoglycaemic and hypolipidemic effect of ethanolic extract of seeds of Eugenia jambolana in alloxan-induced diabetic rabbits.

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Department of Biochemistry, University College of Medical Sciences and GTB Hospital, Delhi 110095, India.


The hypoglycaemic and hypolipidemic effect of ethanolic extract obtained from seeds of E. jambolana was investigated in alloxan-induced diabetic rabbits. Hypoglycaemic activity was assessed by reduction in fasting blood glucose (FBG) at 90min and also fall in peak blood glucose during glucose tolerance test (GTT) in sub-diabetic and mild diabetic (MD) rabbits, but in severe diabetic (SD) rabbits by reduction in FBG at 90min. Ethanolic extract (100mg/kg body weight) when given orally to sub-diabetic (AR) for 1 day, MD for 7 days and SD for 15 days showed significant fall in FBG at 90min (12% AR, 18.9% MD and 29% SD) and also produced 16.9% fall in peak blood glucose in AR and 21% in MD rabbits during GTT. When administered daily for 15 days to MD and SD rabbits, significant fall in FBG (41.3% MD, 31.6% SD) and glycosylated haemoglobin (GHb) levels (23.3% MD, 26.6% SD) were observed, while serum insulin level showed significant increase (32.8% MD, 26.9% SD). Liver and muscle glycogen content also increased. The ethanolic extract of seeds also exhibited significant hypolipidemic effect as evident from fall in total serum cholesterol (TC)/high density lipoprotein cholesterol (HDL-c) ratio, serum low density lipoprotein cholesterol (LDL-c) levels and decreased activity of HMG-CoA reductase. The histopathological studies of liver, pancreas and aorta in alcoholic extract treated diabetic groups revealed almost normal appearance.

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