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CTRP9在糖尿病视网膜病变病程进展中的表达及其意义

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摘要 目的:探讨C1q/肿瘤坏死因子相关蛋白9(CTRP9)在糖尿病视网膜病变(DR)病程变化中的表达状况及其意义.方法:选择健康SD大鼠48只为实验对象,随机抽取其中15只作为正常对照组.其余大鼠给予腹腔注射链脲佐菌素(STZ)诱导大鼠DR模型.将成模的大鼠再次随机分为DR 5W组及DR 10W组(每组各15只),分别继续饲养5周及10周.实验完成后处死大鼠,采用HE染色对不同病程DR大鼠视网膜的病理改变进行观察,并通过RT-PCR、Western Blot方法检测各组视网膜组织中CTRP9 mRNA及蛋白的动态表达.结果:HE染色显示5W组大鼠视网膜部分细胞出现水肿现象;10W组视网膜组织细胞明显水肿,神经上皮层可见增生的毛细血管.RT-PCR显示与正常对照组相比,5W、10W组视网膜组织中CTRP9的表达明显降低(P<0.05),且两组间CTRP9含量比较差异有统计学意义(P<0.05).Western Blot结果示5W、10W组视网膜组织中CTRP9蛋白表达水平明显低于正常组(P<0.05),且两组间CTRP9蛋白含量比较差异有统计学意义(P<0.05).结论:DR大鼠视网膜中CTRP9表达量明显低于正常组,且随着病程加重,视网膜中CTRP9含量逐渐减少,提示CTRP9参与DR的发生、发展.
出处 《甘肃科技纵横》 2020年第5期73-76,14,共5页 Scientific & Technical Information of Gansu
基金 甘肃省卫生行业科研计划项目(项目编号:GSWSKY-2019-40)。
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