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2000μW/cm^2电磁辐射对大鼠海马NR2A蛋白及其mRNA表达的影响 被引量:10

Effects of 2000 μW/cm^2 electromagnetic radiation on expression of immunoreactive protein and mRNA of NMDA receptor 2A subunit in rats hippocampus
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摘要 目的:探讨2000μW/cm2电磁辐射对大鼠海马N-甲基-D-门冬氨酸受体亚单位2A(NR2A)蛋白及其mRNA水平表达的影响,揭示电磁辐射对大鼠学习记忆功能的损伤机制。方法:实验分为空白对照组,假辐射组,1h/d、2h/d、3h/d辐射组。将辐射组大鼠固定体位,头部接受功率密度为2000μW/cm2的近场辐射,连续辐射30d。通过Morris水迷宫检测大鼠的空间学习记忆能力,采用免疫组化法和Western blot法检测大鼠海马组织NR2A蛋白表达的变化,RT-PCR法检测大鼠海马组织NR2A mRNA表达的变化。结果:假辐射组大鼠各项指标与空白对照组相比均无统计学差异(P>0.05);而各辐射组大鼠寻找安全平台的逃避潜伏期较空白对照组明显延长(P<0.05);各辐射组大鼠海马神经元排列紊乱,NR2A阳性细胞比率显著下降,海马组织NR2A蛋白及其mRNA表达水平明显降低(P<0.05)。结论:2000μW/cm2电磁辐射可导致大鼠学习记忆功能下降,其机制可能与大鼠海马组织NR2A蛋白及其mRNA的表达降低有关。 AIM: To evaluate the effects of electromagnetic irradiation of 2000uW/cm2 exposure on mRNA and protein expression levels of immunoreactive protein and mRNA of NMDA receptor 2A subunit in rats hippocampal, and to explore the mechanism of electromagnetic irradiation induced learning and memory impairment. METHODS: Rats were randomly divided into normal control group, sham-radiated group, and 1 h/d, 2 h/d, and 3 h/d radiation groups.
出处 《细胞与分子免疫学杂志》 CAS CSCD 北大核心 2011年第1期15-18,共4页 Chinese Journal of Cellular and Molecular Immunology
基金 河北省自然科学基金资助项目(c2007000921) 河北省科技厅资助项目(07276101D) 河北省教育厅资助项目(031403) 河北省卫生厅资助项目(20100136)
关键词 电磁辐射 海马 学习记忆 N-甲基-D-门冬氨酸受体亚单位2A electromagnetic radiation Hippocampus learning and memory NMethylDasparate receptor subunit 2A
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