育亨宾、纳洛酮及两药合用对氯胺酮麻醉模型小鼠的催醒试验

Effect of yohimbine,naloxone and their combination on analepsia from ketamine-induced anesthesia in mice

背景:育亨宾、纳洛酮作为临床常用麻醉拮抗剂,尤其是在拮抗氯胺酮麻醉方面运用广泛。目的:观察育亨宾、纳洛酮及二者合用对氯胺酮麻醉小鼠的催醒作用。方法:昆明种小鼠40只随机分成4组,所有小鼠均腹腔注射氯胺酮制作麻醉模型,待翻正反射消失1min后,不同实验组分别采用腹腔注射生理盐水、育亨宾、纳洛酮、育亨宾+纳洛酮处理,观察翻正反射消失的持续时间(恢复时间)。结果与结论:与生理盐水处理组相比,育亨宾组、纳洛酮组、育亨宾+纳洛酮组小鼠的睡眠时间均明显缩短,两药合用组比单独用药组睡眠缩短时间明显。提示育亨宾与纳洛酮及二者合用能有效拮抗氯胺酮的麻醉效应。

BACKGROUND： Yohimbine and naloxone are widely used as narcotic antagonists in clinic, especially against ketamine-induced anesthesia. OBJECTIVE： To investigate the analeptic effects of yohimbine, naloxone and their combination on ketamine-induced anesthesia in mice. METHODS： Forty Kunming mice were randomly assigned to four groups, and all mice were intraperitoneally administered with ketamine. One minute after loss of righting reflex, different groups were intraperitoneally injected with normal saline, yohimbine, naloxone, yohimbine＋naloxone, respectively. The duration of loss righting reflex （sleeping time） was recorded. RESULTS AND CONCLUSION： Compared with the normal saline group, the sleeping time in the yohimbine, naloxone and yohimbine＋naloxone groups was obviously decreased. In addition, significant difference was also observed between the single treated and combined groups. Yohimbine, naloxone and their combination can efficaciously play an antagonistic role in the narcotism of ketamine.