电刺激小脑顶核对局灶脑缺血/再灌注后大鼠脑组织NF-кB、PPARγ、IкBα和COX-2mRNA表达的影响

被引：6

作者：

何兰英 ^{[1
]}

张蓓 ^{[1
]}

罗勇 ^{[2
,3
]}

董为伟 ^{[2
,3
]}

王咏龙 ^{[2
,3
]}

机构：

[1] 成都市第二人民医院神经内科

[2] 重庆医科大学附属第一医院神经内科

[3] 重庆市神经病学重点实验室

来源：

中国康复医学杂志 | 2014年 / 29卷 / 02期

关键词：

电刺激; 小脑顶核; NF-κB; 脑缺血/再灌注; PAARγ; COX-2; IкBα;

D O I：

暂无

中图分类号：

R743.3 [急性脑血管疾病（中风）];

学科分类号：

1002 ;

摘要：

目的:观察电刺激小脑顶核(FNS)对大鼠局灶脑缺血/再灌注(I/R)大脑缺血侧皮质PPARγ、IкBα和NF-кB P65蛋白表达的变化,以及对下游炎症因子COX-2 mRNA表达的影响,探讨FNS对大鼠局灶脑缺血/再灌注后脑保护作用的机制。方法:采用SD大鼠建立局灶I/R模型,随机分为6组。正常对照组(NC组)、缺血再灌注组(I/R组)、缺血再灌注后小脑顶核刺激组(FNS组),根据再灌注时间不同分为7d和14d两个亚组。采用免疫组织化学法检测NF-κB P65蛋白表达,分别采用Western blotting和逆转录—聚合酶链反应法(RT-PCR)检测PPARγ、IкBα蛋白和COX-2 mRNA表达,同时检测各组脑梗死体积。结果:免疫组织化学显示I/R 7d组和I/R 14d组NF-κB P65、PPARγ和IкBα蛋白较正常组显著增加(P<0.05),FNS组NF-κB P65蛋白表达显著低于相应I/R组(P<0.05),Western blotting检测显示FNS组PPARγ、IкBα蛋白表达明显高于相应正常组及I/R组(P<0.05),RT-PCR显示FNS组COX-2 mRNA表达较I/R组显著降低(P<0.05),而FNS组脑梗死体积较单纯I/R组明显减小(P<0.05)。结论:FNS可有效提高脑缺血/再灌注后PAARγ及IкBα表达,抑制由NF-κB P65调控的下游炎症因子COX-2mRNA的表达,减轻脑梗死体积,这可能是FNS发挥中枢神经保护的机制之一。

引用

页码：107 / 112

页数：6

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