Ripe Musa sapientum Peels Exhibit Neuroprotection Against Lead Acetate-Induced Brain Damage in Wistar Rats

Abstract

Objective: Human health has continued to be at risk from lead exposure. This study explored the antioxidative potential of ethanol extract of ripe Musa sapientum peels to protect against lead acetate-induced neuronal insult in female wistar rats. Methods: Thirty adult female rats (120-160 g) were randomly divided into six groups (n = 5): Group 1 (control group) received 10 mL/kg of distilled water; Group 2 received 100 mg/kg lead acetate. Group 3 received 2.5 mg/kg of donepezil. Groups 4 to 6 received 100, 200, and 400 mg/kg ethanol extract of ripe M sapientum, respectively, via oral gavage. Groups 2 to 5 were co-treated with 100 mg/kg lead acetate for 21 days. Neurobehavioral parameter, biochemical and histological analyses of the hippocampus were determined. Recognition memory was evaluated using Novel Object Recognition Test. Results: There was a significant ( p < 0.05) increase in total exploration, discrimination index, and percentage alternation in the ethanol extract M sapientum-treated groups compared with the lead acetate-induced group. M sapientum ethanol extract and dopamine significantly ( p < 0.05) reduced acetylcholinesterase enzyme (AChE) and malondialdehyde (MDA) activities in a dose-dependent manner and significantly ( p < 0.05) increased superoxide dismutase activity (SOD) dose dependently, respectively. In the histopathological analysis of the hippocampal area, there were mild vacuolation (V), mild degeneration as well as mild granular cell atrophy in the treated groups, suggesting that M sapientum may have neuroprotective properties. Conclusion: Ethanol extract of ripe M sapientum peels enhanced cognitive functions and may be beneficial in preventing neurodegenerative disorders via antioxidant mechanism.