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支气管哮喘大鼠肺组织中Wnt5a/JNK信号通路相关分子表达 被引量:3

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摘要 目的对支气管哮喘大鼠肺组织Wnt5a/JNK信号通路相关分子的表达进行研究。方法将36只健康清洁级SD大鼠随机分为模型组和对照组,每组18只,模型组制备大鼠哮喘模型,采用HE染色法观察两组气道病理生理变化,通过实时荧光定量PCR对两组肺组织及血液中Wnt5a mRNA的表达进行研究,通过Western印迹法对肺组织中磷酸化的c-Jun和c-Jun N端激酶蛋白的表达进行检测。结果在激发后,模型组出现呼吸困难、大小便失禁、皮肤发绀等症状;随着激发时间的延长,对照组大鼠无明显异常。大体观察,模型组双肺增大明显,肺组织表明出现形状不规则的充血区;对照组肺组织呈现正常的粉红色,无明显出血点;光镜下发现模型组支气管呈管腔狭窄,黏膜皱褶较多,呈增厚状态,气管及血管可见炎症细胞浸润,气道壁增厚,说明哮喘模型造模成功;实时荧光定量PCR检测Wnt5a的融解曲线呈现单峰状态,而在扩增曲线中显示Ct的间隔值相对较均匀,说明Wnt5a荧光定量PCR检测扩增曲线相对比较特异,相对比较理想。与对照组相比,模型组肺组织及外周血单核细胞中Wnt5a mRNA的表达量均增加明显(P<0.05);模型组p-JNK、p-c-Jun蛋白的表达量明显高于对照组(P<0.05)。结论 Wnt5a/JNK信号通路的相关分子在哮喘的发生发展过程中表达增强,说明Wnt5a/JNK信号通路在哮喘的发生过程中可能被激活。
作者 张晓霞 许涛
机构地区 武汉市普爱医院
出处 《中国老年学杂志》 CAS CSCD 北大核心 2015年第24期7007-7009,7009,共3页 Chinese Journal of Gerontology
基金 武汉市卫生局科研项目(No.wx14c64)
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二级参考文献22

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