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The objective of the study was to investigate the possible neuroprotective effect of ethanolic extract of Commiphora mukul gum resin (EtCMGR) against oxidative stress in the brain of streptozotocin (STZ) induced diabetic Wistar rats. The experimental animals were divided into four groups: control (C), control treated with EtCMGR (C+CM), diabetic (D) and diabetic treated with EtCMGR (D+CM). Diabetes was induced by a single intraperitoneal injection of STZ (55 mg/kg body weight). Plant extract treated groups (C+CM and D+CM) were administered EtCMGR at a dose of 200 mg/kg body weight/day by gavage for 60 days. Diabetic rats showed hyperglycemia, hypoinsulinemia with impaired insulin sensitivity. EtCMGR treatment to diabetic (D+CM group) rats prevented the rise in glucose level by 96.7 %, while enhancing insulin level (77.7 %) and improving insulin sensitivity (27.3 %) compared to D group. The brain antioxidant status of D group rats showed higher levels of lipid peroxidation (77.9 %), protein glycation (100 %), and increased activities of xanthine oxidase (47.1 %) and sorbitol dehydrogenase (101.9 %) and lowered concentration of reduced glutathione (38.2 %) and decreased activities of antioxidant enzymes i.e., glutathione reductase (24 %), glutathione peroxidase (24.4 %) and superoxide dismutase (42.1 %) and increased activities of catalase (87.4 %) and glutathione-S-transferase (45.3 %) compared to control group. While EtCMGR treatment for 60 days in D+CM group prevented the observed abnormalities of antioxidant status of D group. This study demonstrates that EtCMGR is a potent neuroprotective agent against oxidative damage induced under diabetes.

excli journal

Protective effect of ethanolic extract of Commiphora mukul gum resin against oxidative stress in the brain of streptozotocin induced diabetic Wistar male rats