侧脑室注射河豚毒素和藜芦定对大鼠异氟醚MAC的影响

被引:7
作者
靳艳卿
段世明
王钧
曾因明
机构
[1] 徐州医学院附属医院江苏省麻醉学重点实验室
关键词
钠通道; 河豚毒素; 藜芦定; 异氟烷;
D O I
暂无
中图分类号
R965 [实验药理学];
学科分类号
摘要
目的 观察侧脑室注射河豚毒素 (TTX ,钠通道阻断剂 )或 (和 )藜芦定 (VER ,钠通道激动剂 )对大鼠异氟醚最低肺泡有效浓度 (MAC)和翻正反射恢复时间的影响。方法 大鼠侧脑室置管后 2d ,进行MAC测定。 40只SD大鼠随机分为 5组 :生理盐水 (NS)组、TTX组、含 4%二甲亚砜生理盐水 (DMSO)组、VER组和VER +TTX组。测定每组大鼠侧脑室给药前和给药后MAC ,MAC测定结束后记录大鼠翻正反射恢复时间。结果  2 5 μmol·L-1的TTX 2 μL明显降低了异氟醚的MAC ,延长了翻正反射恢复时间。 5mmol·L-1的VER 2 μL对异氟醚的MAC和翻正反射恢复时间皆无影响 ,但可部分拮抗TTX降低异氟醚MAC和延长翻正反射恢复时间的作用。结论 电压门控性钠通道可能不是异氟醚全麻作用的主要靶位
引用
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页码:48 / 50
页数:3
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