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Journal of Applied Sciences
Year: 2007  |  Volume: 7  |  Issue: 10  |  Page No.: 1397 - 1403

Evaluation of the Effects of the Aqueous Extract of Vitex doniana Root-Bark on the Peripheral and Central Nervous System of Laboratory Animals

F.I. Abdulrahman, P.A. Onyeyili, U.K. Sandabe and V.O. Ogugbuaja    

Abstract: Aim of this study to investigate the effects of aqueous extract of Vitrex doniana on the peripheral and central nervous systems and possibility to use it as folk medicine. The aqueous extract of Vitex doniana was soxhlet extracted with distilled water and concentrated in vacuo to give a yield of 8.5% w/w. The LD50 following intraperitoneal administration was estimated to be 980 mg kgG1. The aqueous extract of Vitex doniana from the study produced substantial depressant effects on both the peripheral and central nervous system. The aqueous extract induced sleep on its own at dose of 400 mg kgG1 and potentiated sodium thiopental sleeping time in a dose dependant manner. It also showed significant (p< 0.05) muscle relaxant activities and produced analgesia and weal anesthetic effect. The extract was able to confer 80% protection to rats treated with convulsive dose of PTZ, while it conferred 100% protection to rats treated with convulsion dose of strychnine.

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