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您当前的位置:首页→期刊目录>>红藻氨酸诱导癫痫发作大鼠海马星形胶质细胞C-FOS基因表达的研究 |
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摘要:
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目的研究癫痫发作大鼠海马星形胶细胞C-FOS基因表达的变化,探讨其对癫痫发作的维持与复发的影响。方法将83只成年雄性SD大鼠随机分为实验组58只,对照组25只。实验组在海马CA3区注射红藻氨酸(Kainicacid,KA)建立癫痫模型,对照组在相同部位注射等量生理盐水。利用免疫组织化学双重染色技术,分别在癫痫发作后1h、3h、6h、12h和24h观察大鼠海马星形胶质细胞C—FOS基因的表达。结果与对照组大鼠比较,癫痫模型鼠海马CA1区CFAP/C—FOS双标记阳性细胞百分率于癫痫发作后1h(12.70±-0.03)、3h(17.10±0.05)、6h(24.92±0.04)明显升高(P〈0.01),在6h达到高峰,在12h下降,但是仍较对照组高(10.71±0.06;1.59±0.02,P〈0.01),在24h下降至对照组水平(2.00±0.02;2.08±0.03,P〉0.05)。结论KA诱导大鼠癫痫发作,导致海马星形胶质细胞C-FOS基因相对持续的高表达,从而激活星形胶质细胞,产生高致痢性的病理环境,可能是癫痫发作的维持以及复发的病理生理机制之一。
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参考文献:
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