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。
2
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.
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.