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 RESEARCH ARTICLE
Year : 2011  |  Volume : 43  |  Issue : 4  |  Page : 414-418

Protective effects of Phyllanthus amarus aqueous extract against renal oxidative stress in Streptozotocin -induced diabetic rats


1 Department of Biochemistry, Sri Krishnadevaraya University, Anantapur-515 003, Andhra Pradesh, India
2 Department of Biochemistry, Sri Venkateswara University, Tirupati-517502, Andhra Pradesh, India

Correspondence Address:
D Saralakumari
Department of Biochemistry, Sri Krishnadevaraya University, Anantapur-515 003, Andhra Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0253-7613.83112

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Aim and Objectives: In the present study, we have evaluated the antihyperglycemic, hypolipidemic and antioxidant activities of aqueous extract of Phyllanthus amarus (PAAEt) in streptozotocin (STZ)-induced diabetic rats. Materials and Methods: PAAEt was administered at 200 mg/kg body weight/day to normal treated (NT-group) and STZ-induced diabetic treated rats (DT-group) by gavage for eight weeks. During the experimental period, blood was collected from fasted rats at 10 days intervals and plasma glucose level was estimated. The plasma lipid profile was estimated at the end of experimental period. After the treatment, period kidney lipid peroxidation (LPO), protein oxidation and reduced glutathione (GSH) were estimated and antioxidant enzymes viz., glutathione reductase (GR), glutathione peroxidase (GPx) and glutathione-S-transferase (GST), catalase (CAT) and superoxide dismutase (SOD) were also assayed. Results: The significant decrease in the body weight, hyperglycemia and hyperlipidemia observed in STZ-induced diabetic rats (D-group) were rectified with PAAEt treatment in diabetic treated group (DT-group). D-group rats showed increased renal oxidative stress with increased LPO and protein oxidation. DT-group showed a significant decrease in renal LPO, protein oxidation and a significant increase in GSH content and GR, GPx and GST activities when compared with D-group. The activities of SOD and CAT decreased significantly in D-group, but were normalized in DT-group. Normal rats treated with PAAEt (NT-rats) showed a significant decrease in lipid profile, renal LPO and protein oxidation, with significant increase in renal GSH and activities of antioxidant enzymes compared to normal rats (N-group). Conclusion: Our results demonstrated that PAAEt with its antidiabetic, hypolipidemic and antioxidant properties could be a potential herbal medicine in treating diabetes and renal problems.






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