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电针对大鼠局灶脑缺血/再灌注后神经上皮干细胞蛋白表达的影响 被引量:10

Effect of Electroacupuncture on Expression of Nestin Protein after Focal Ischemia/Reperfusion in Rats
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摘要 目的研究电针“合谷”穴(LI4)对大鼠局灶脑缺血/再灌注后室下区(SVZ)神经干细胞增殖的影响。方法采用“线栓法”建立大鼠局灶脑缺血/再灌注模型,将88只Wistar大鼠随机分为正常对照组(4只)、假手术组(4只)、模型组和电针组,其中模型组和电针组按1、7、14、21、28天5个时间点分为5个亚组,每个亚组8只。取大鼠双侧“合谷”穴作为刺激部位,用电针治疗仪作连续刺激,每次刺激时间为15min,每天1次,7天为1个疗程。免疫组化法检测SVZ区神经上皮干细胞蛋白(Nestin)的表达。结果与正常对照组比较,模型组中再灌注1天时梗塞侧SVZ Nestin阳性细胞开始增加,7天达到高峰(P<0.05),14天后开始下降,28天后接近正常;模型组7天梗塞灶周围出现大量Nestin阳性细胞。与模型组比较。电针组(SVZ)Nestin阳性细胞在再灌注后1天时开始增加,7天时达到高峰,与模型7天组比较,统计学分析显示增加约1.5倍(P<0.05),14天后开始下降,28天后接近正常;电针刺激7天后梗塞灶周围Nestin阳性表达较模型7天组增强。结论脑缺血可激活内源性神经干细胞的自我增殖潜能,而电针刺激后可使内源性神经干细胞的增殖更加明显。 Objective To investigate the effect of electroacupuncturing (EA) Hegu point (LI4) on prolifer- ation of neural stem cells in the subventricular zone (SVZ) after rat focal ischemia/reperfusion (I/R).Methods Animal model was made by ligating external carotid artery and inserting a piece of nylon thread into the internal ca- rotid artery.Eighty-eight Wistar rats were randomly divided into the normal control group (n=4),the sham opera- ted group (n=4),the I/R groups (contain 1,7,14,21,28 days five time points,e...
作者 赵振强 罗勇
出处 《中国中西医结合杂志》 CAS CSCD 北大核心 2006年第S1期20-24,共5页 Chinese Journal of Integrated Traditional and Western Medicine
基金 重庆市科委攻关项目(No.2003-7) 重庆市卫生局中医药科研项目(No.2003-B-16)
关键词 局灶脑缺血/再灌注 神经干细胞 增殖 电针 “合谷”穴 s focal ischemia/reperfusion neural stem cell proliferation electroacupuncture Hegu point
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