七氟醚后处理对局灶性脑缺血-再灌注损伤的保护作用

被引:34
作者
夏明
董海龙
谢克亮
熊利泽
机构
[1] 第四军医大学西京医院麻醉科
关键词
七氟醚; 再灌注损伤; 后处理;
D O I
暂无
中图分类号
R614 [麻醉学];
学科分类号
100217 [麻醉学];
摘要
目的评价在缺血后期及再灌注早期吸入不同浓度的七氟醚行后处理对大鼠局灶性脑缺血-再灌注损伤的保护作用及其剂量依赖性。方法雄性SD大鼠50只,随机分为空白对照组、吸氧组和0.5、1.0、1.5MAC七氟醚后处理组,每组10只。采用大脑中动脉线栓法阻闭(middle cerebral artery occlusion,MCAO)120min后再灌注72h制备局灶性脑缺血模型。各七氟醚后处理组于再灌注即刻的前20min和后10min给予不同浓度七氟醚吸入。再灌注后的24、48和72h行神经功能评分(NDS),并于最后一次评分后测定脑梗死容积比。结果0.5、1.0和1.5MAC组的脑梗死容积比分别为0.39±0.03,0.31±0.03和0.24±0.03(P<0.05),明显小于对照组0.53±0.05(P<0.05)。吸氧组为0.51±0.05,与对照组比差异无统计学意义。各个时间点七氟醚后处理组NDS明显优于对照组和吸氧组。结论在局灶性脑缺血-再灌注的缺血后期和再灌注早期吸入0.5、1.0和1.5MAC七氟醚行后处理均具有脑保护作用,并呈现剂量依赖性。
引用
收藏
页码:434 / 436
页数:3
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