Abstract

In order to determine the effect of GABAB receptor antagonist, CGP 55845 {3-N [1-(S)-(3,4-dichlorophenyl)ethyl]amino-2-(S)-hydroxypropyl-P-benzyl-phosphinic acid} on the selective aspects of male albino mice behavior, present study was designed consisting of series of neurological (Rota rod, Open field, Morris Water Maze, Light and dark transition, Elevated plus maze and Novel object) tests. Mice were intraperitoneally injected with 1mg CGP 5584/ Kg body weight/ ml of Dimethyl Sulfoxide or with equal volume of saline solution (0.9 % NaCl) for twelve days. Data analysis for various parameters for rota rod, open field, light and dark transition test, elevated plus maze and novel object test revealed that the neuromuscular coordination, locomotory and exploratory behavior of male albino mice was not significantly affected by the CGP 55845 injections (P > 0.05). The results for Morris water maze (MWM) probe trial 1 indicated that CGP 55845 treated animals took less time and visited the platform area more frequently than controls indicating improved spatial memory but this affect were neutralized during probe trial 2 indicating that applied dose of CGP 55845 was unable to induce long term memory formation in male albino mice. We recommend further studies with higher dose concentration of CGP 55845 to explore its effect on albino male mice behavior.

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