Objective: To investigate the antiamnesic effect of pregnenolone sialic glycoside on memory impairment in mice. Methods: Pharmacological model of amnesia in mice was produced by scopolamine. Learning and memory was evaluated using water maze performance of mice. Results: Significant memory deficit was induced by scopolamine (4 mg/kg, ip). Pregnenolone sulfate (0.1 5 mg/kg, sc ) failed to affect the scopolamine induced memory deficit. Pregnenolone sialic glycoside (0.1 5 mg/kg, sc) attenuated the deficit, decreased the time of finding platform, the errors of entering non exit and swimming distance at a dose of 1 mg/kg ( P
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