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右美托咪定联合肢体远程缺血后处理对大鼠局灶性脑缺血再灌注损伤的保护作用 被引量:1

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摘要 目的探讨右美托咪定(DEX)联合肢体远程缺血后处理对大鼠局灶性脑缺血再灌注(IRI)的保护作用。方法选取成年雄性SD大鼠60只,按随机数字表法分为对照组、DEX后处理组DEX组、远程缺血后处理组(远程缺血组)和联合处理组(联合组)各15只。通过采用线拴阻闭大脑中动脉1.5 h,再灌注48 h的方法建立大鼠局灶性脑IRI模型,其中对照组大鼠给予缺血期分离左股动脉,再灌注前15 min腹腔注射10 ml生理盐水处理;DEX组给予缺血期分离左股动脉,再灌注前15 min腹腔注射10 ml 3μg/kg的盐酸DEX处理;远程缺血组给予缺血期钳夹夹闭左股动脉15 min后恢复血流10 min,循环3次,大脑中动脉再灌注前15 min腹腔注射10 ml生理盐水处理;联合组进行DEX、远程缺血组的联合处理。24 h后进行大鼠脑神经功能缺损评分(NDS),48 h后以Image J软件测量大鼠的脑梗死面积比例。结果 DEX、远程缺血、联合组的NDS评分及脑梗死面积比例均显著低于对照组,且联合组低于DEX、远程缺血组(P<0.05);而DEX、远程缺血组比较无统计学差异(P>0.05)。结论 DEX及肢体远程缺血后处理均可显著改善大鼠的局灶性脑缺血再灌注损伤,二者联合处理具有协同保护作用。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2016年第14期3413-3414,共2页 Chinese Journal of Gerontology
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