Embelia ribes extract reduces high fat diet and low dose streptozotocin-induced diabetic nephrotoxicity in rats
Keywords:type 2 diabetes, nephropathy, creatinine, streptozotocin, insulin, high fat diet
Nephropathy associated with type 2 diabetes is the single most common cause of end-stage renal disease. The aim of the present study was to evaluate the preventive effect of ethanolic extract of Embelia ribes fruit (EER) against high fat diet (HFD) and low dose streptozotocin (STZ)-induced diabetic nephrotoxicity in Wistar rats. HFD-fed and low dose STZ (35 mg/kg, i.p)-induced diabetic rats were treated with EER (100 and 200 mg/kg/day) for 21 days while continuing on HFD. Preventive effects of EER were demonstrated by significant reduction (p< 0.01) in body weight gain, fasting blood glucose, blood pressure, serum lactate dehydrogenase (LDH), creatinine, alkaline phosphatase (ALP), total cholesterol and triglyceride levels, while elevation in serum albumin and total protein levels. Insulin sensitizing effects were seen during oral glucose tolerance testing. Further, EER treatment significantly (p< 0.01) decreased the kidney thiobarbituric acid-reactive substance (TBARS) levels, while increasing the superoxide dismutase (SOD), catalase (CAT) and glutathione (GSH) levels in diabetic rats. Histological studies of kidney also supported the experimental findings. Taken together, our data suggest that EER attenuates renal injury in type 2 diabetic rats, possibly by improvement in glucose and lipid metabolism, enhancement of insulin sensitivity, blood pressure lowering, and inhibition of lipid peroxidation process.
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