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Evid Based Complement Alternat Med. 2008 Jun;5(2):181-6. doi: 10.1093/ecam/nem017.

Evaluation of the anxiolytic effect of Nepeta persica Boiss. in mice.

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1
Department of Pharmacology, Department of Pharmacognosy and Isfahan Pharmaceutical Sciences Research Centre, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.

Abstract

The aim of the present study was to evaluate the anxiolytic effects of hydroalcoholic extract (HE) of Nepeta persica Boiss. (Lamiaceae) on the elevated plus-maze (EPM) model of anxiety. The extract of arial parts of the plant was administered intraperitoneally to male NMRI mice, at various doses, 30 min before behavioural evaluation. The HE extract of N. persica at the dose of 50 mg kg(-1) significantly increased the percentage of time spent and percentage of arm entries in the open arms of the EPM. This dose of plant extract affected neither animal's locomotor activity nor ketamine-induced sleeping time. The 50 mg kg(-1) dose of the plant extract seemed to be the optimal dose in producing the anxiolytic effects, lower or higher doses of the plant produce either sedative or stimulant effects. At 100 mg kg(-1), the plant extract increased the locomotor activity. These results suggested that the extract of N. persica at dose of 50 mg kg(-1) possess anxiolytic effect with less sedative and hypnotic effects than that of diazepam and causes a non-specific stimulation at 100 mg kg(-1).

KEYWORDS:

Nepeta persica; anxiety; elevated plus-maze; sedative

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