Abstract
The study evaluated the lipid profile, electrolytes and histological changes in diabetic Wistar rats treated with stem bark extract of Aristolochia repens. Type 2 diabetes was induced in rats with high-fat diet and low dose of streptozotocin (35 mg/kg body weight). A total of thirty-five Wistar rats were fed with high-fat diet for eight (8) weeks, while five (5) Wistar rats (Sham control) were fed with low-fat diet. Non-induced male Wistar rats were treated with distilled water (Sham control); while the induced male Wistar rats were treated with distilled water, metformin (100 mg/kg), 50, 100 and 200 mg/kg ethanolic extract of Aristolonchia repens stem bark for 28 days. The rats were sacrificed; liver, kidney and serum were collected and analyzed for serum glucose, lipid profile, electrolytes and histological changes. Treatment with ethanolic extract of Aristolonchia repens stem bark significantly reduced the body weight, glucose level, total cholesterol concentration, triglycerides, low-density lipoprotein concentration and atherogenic indices. Mild pathological alterations were observed in the liver and kidney of diabetic rats at dosage above 50 mg/kg. However, the extract reduced the blood glucose, lipids and improve the selected electrolyte balance. This study suggests that ethanolic extract of stem bark of A. repens possesses antihyperglycaemia and antilipidaemic potential and might not be safe at dosage above 50 mg/kg.
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