Shaddock (Citrus maxima) peels extract restores cognitive function, cholinergic and purinergic enzyme systems in scopolamine-induced amnesic rats.

Autor: Ademosun, Ayokunle O., Adebayo, Adeniyi A., Popoola, Temitope V., Oboh, Ganiyu
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Zdroj: Drug & Chemical Toxicology; May2022, Vol. 45 Issue 3, p1073-1080, 8p
Abstrakt: This study investigated the effect of shaddock peels extract on cognitive function in scopolamine-induced amnesic rats. Wistar rats were pretreated with shaddock peels extract (50 and 100 mg/kg) and donepezil (5 mg/kg) for fourteen days via oral administration. Memory impairment was induced at the end of the treatment period via a single intraperitoneal administration of scopolamine (3 mg/kg). Thereafter, the animals were subjected to behavioral studies (Morris water maze and Y-maze tests). Finally, the rats were sacrificed and the hippocampus of the rat's brain was isolated for biochemical analyses. The results showed a significant decrease in memory and cognitive function as revealed by Morris water maze and Y-maze tests in scopolamine-induced rats which were reversed by shaddock peels extract. Also, there was a significant decrease in the activity of adenosine monophosphohydrolase (AMPase) with a simultaneous increase in activities of adenosine deaminase (ADA), adenosine triphosphate diphosphohydrolase (ATPdase), acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) in scopolamine-induced rats when compared with the control. Besides, a significant increase in malondialdehyde (MDA) and reactive oxygen species (ROS) levels were observed in scopolamine-induced rats. However, donepezil or shaddock peels extract (50 and 100 mg/kg) caused a significant inhibitory effect on AChE, and ADA activities when compared to scopolamine-induced rats. Rats treated with shaddock peels extract also showed a significant reduction in MDA and ROS levels compared to scopolamine-induced rats. Therefore, our findings showed that the cognitive-enhancing effects of shaddock peels extract could be due to antioxidant activities and modulation of some enzymes linked with cognitive dysfunction. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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