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자료유형
학술저널
저자정보
Lee, Chang-Hwan (Department of Herbal Medicinal Pharmacology, College of Herbal Bio-Industry, Daegu Haany University) Yoon, Byung-Hoon (Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University) Ryu, Jong-Hoon (Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University) Jung, Ji-Wook (Department of Herbal Medicinal Pharmacology, College of Herbal Bio-Industry, Daegu Haany University)
저널정보
경희한의학연구센터 Oriental pharmacy and experimental medicine Oriental pharmacy and experimental medicine 제9권 제2호
발행연도
2009.1
수록면
135 - 141 (7page)

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The purpose of this study was to characterize the putative anxiolytic-like effects of the 70% ethanol extract of Portulaca oleracea (EPO) using an elevated plus maze (EPM) in mice. The EPO was orally administered at 50, 100, 200 or 400 mg/kg to ICR mice, 1 h before the behavioral evaluation in the EPM, respectively. Control mice were treated with an equal volume of 10% tween 80, and positive control mice with diazepam (1 mg/kg). Single treatments of the EPO significantly increased the percentage of time spent and arm entries into the open arms of the EPM versus controls (P < 0.05). Moreover, there were no changes in the locomotor activity and myorelaxant effects in any group compared with the saline controls. In addition, the anxiolytic-like effects of the EPO were blocked by flumazenil (10 mg/kg, i.p), a $GABA_A$ antagonist not by WAY 100635 (0.3 mg/kg, i.p), a 5-$HT_{1A}$ receptor antagonist. These results indicate that P. oleracea is an effective anxiolytic agent, and suggest that the anxiolytic-like effects of P. oleracea is mediated via the GABAergic nervous system.

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