Sedative and anxiolytic effects of the methanolic extract of <i>Leea indica</i> (Burm. f.) Merr. leaf

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The sedative and anxiolytic potential of Leea indica (Burm. f.) Merr., a Bangladeshi tribal medicinal plant was studied for the first time. The crude methanol extract of L. indica leaves was evaluated for its central nervous system (CNS) depressant effect using rodent behavioral models, such as hole cross, open field and thiopental sodium induced sleeping time tests for its sedative properties and an elevated plus-maze (EPM) test for its anxiolytic potential, respectively. The methanol extract of L. indica at doses of 200 mg/kg, p.o. and 400 mg/kg, p.o., displayed a dose dependent suppression of motor activity, exploratory behavior (in hole cross and open field tests) and prolongation of thiopental induced sleeping time in mice; the highest CNS depressant effect was shown at a dose of 400 mg/kg, p.o. In the EPM test, both doses of methanol extract significantly (p < 0.01) increased exploration to and time spent by the treated mice in EPM open arms in a dose dependent manner. These results provide in vivo evidence that leaves of L. indica in general have significant sedative and anxiolytic effects. However, these results may rationalize the scientific basis for use of this plant in traditional medicine for treatment of anxiety and related disorders.

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  • Drug Discoveries & Therapeutics

    Drug Discoveries & Therapeutics 5 (4), 185-189, 2011

    特定非営利活動法人 バイオ＆ソーシャル・サイエンス推進国際研究交流会

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