期刊
JOURNAL OF ETHNOPHARMACOLOGY
卷 89, 期 2-3, 页码 271-276出版社
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/j.jep.2003.09.008
关键词
anxiety; elevated plus-maze; Stachys lavandulifolia Vahl
Interest in alternative medicine and plant-derived medications that affect the mind is growing. The aim of the present study was to investigate the effects of a hydroalcoholic extract and essential oil of Stachys lavanduifolia Vahl on the elevated plus-maze (EPM) model of anxiety. The Stachys lavandulifolia extract or its essential oil was administered intraperitoneally to male TO mice, at various doses, 30 min before the behavioral evaluation. The extract of Stachys lavandulifolia at the dose of 100 rng/kg increased the percentage of time spent and the percentage of arm entries in the open arms of the EPM and decreased the percentage of time spent and the percentage of arm entries in the closed arms of the EPM. The plant extract at doses lower than 100 mg/kg had no significant effects on any of the parameters measured on the EPM. This dose of the plant extract prolonged the ketamine-induced sleeping time, and decreased the locomotor activity in mice. These results suggested that the extract of Stachys lavandulifolia possessed anxiolytic effect with relatively lower sedative activity than diazepam. The essential oil of Stachys lavandulifolia, however, at doses of up to 100 mg/kg did not have any significant effects on the mice behaviour on the EPM. (C) 2003 Elsevier Ireland Ltd. All rights reserved.
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