Abstract
Diabetes is a major cause of death worldwide and currently available allopathic drugs presents adverse side effects, thus, necessitating a continuous screening for natural products. This study therefore investigated the effects of Propolis Ethanol Extract (PEE) on blood sugar, lipid metabolism, and poly-(ADP)-ribose polymerase (PARPs) protein level of diabetic male Wistar rats. Seventy rats weighing between (150-180) g used in this study were randomized into seven (7) groups as follows: group 1 (Normal control given Olive oil), group 2 (Diabetic control given Olive oil), group 3 [Diabetic + PEE (200mg/kg)], group 4 [Diabetic + (PEE 600mg/kg)], group 5 [Diabetic + Glibenclamide (10mg/kg)], group 6 [Normal + PEE (200mg/kg)], and group 7 [Normal + PEE (600mg/kg)]. Diabetes was induced by a single intraperitoneal injection of streptozotocin (65mg/kg in 0.1M citrate buffer pH 4.5), while the vehicle and PEE were orally administered once daily. Treatment with PEE commenced after the confirmation of diabetes. Five rats from each group were sacrificed after the third and sixth weeks of PEE treatment. Administration of PEE significantly (P < 0.05) lowered the elevated fasting blood sugar, improves body weight, and abated lipotoxicity in the brain, heart, liver and kidney of the treated groups in a dose- and duration-dependent manners. The increased protein level of PARPs and lowered hydroxyl methyl-glutaryl CoA reductase activity were significantly reversed after PEE treatment. This study concludes that PEE might be a suitable and viable regimen against diabetic complications in rats.
Published Version
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