ObjectiveTo investigate the effect of NMDA receptor antagonist MK801 on the negative affection induced by withdrawal from acute morphine dependence in rats.

目的谷氨酸NMDA受体拮抗剂地卓西平（MK801）对大鼠急性吗啡依赖戒断性情绪反应的影响。

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OBJECTIVE:To elucidate the effect of ondansetron(OND), a 5-HT3 receptor antagonist, on the morphine-induced conditioned place preference(CPP) in mice and its possible mechanism.

目的：探讨5-HT3型受体特异性拮抗剂奥丹西隆对吗啡诱导的条件性位置偏爱（CPP）效应的影响及其可能机制。

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Objective: To evaluate the effects of prophylactic intravenous administration of the 5-hydroxytryptamine subtype 3(5-HT3) receptors antagonist azasetron on intrathecal morphine-induced pruritus.

目的：观察5-羟色胺（5-HT3）受体拮抗药阿扎司琼静脉预先注射对鞘内吗啡所致的瘙痒发生防治效果。

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