Abstract
Etifoxine is an anxiolytic drug with a dual mechanism of action. In contrast to conventional benzodiazepine anxiolytics, which induce cognitive dysfunction and myorelaxation, no memory impairment nor a decrease in motor activity is observed with etifoxine. This study aims to evaluate the effects of etifoxine on locomotor activity and passive learning in rats with diazepam-induced memory deficit. Male Wistar rats were treated intraperitoneally for 7 days with: (1) saline; (2) diazepam 2.5 mg/kg bw or (3) diazepam 2.5 mg/kg bw and etifoxine in a dose of 50 mg/kg bw. Activity cage test was used for evaluation of locomotor activity, and step-through and step-down tests were performed to study the passive learning. Etifoxine increased the number of horizontal movements on the 7th and 14th days of the experiment. The drug exhibits anti-amnesic effect in a model of diazepam-induced anterograde amnesia by enhancing long-term memory in passive learning tests. The data obtained suggest that etifoxine can reduce the benzodiazepine-induced cognitive deficit. Moreover, such a combination can alleviate the negative influence of benzodiazepines on locomotor activity. However, additional studies are necessary to translate these results into clinical practice.
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