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1、阿托伐他汀对糖尿病大鼠视网膜NF-κB表达影响的实验研究魏薇于晓静王晓梅隋淼朱瑞萍李湘摘要目的:探讨他汀类药物对糖尿病大鼠视网膜NF-κB表达的影响及其可能机制。方法:雄性SD大鼠42只,随机抽28只腹腔注射链脲佐菌素65mg/kg建立糖尿病模型,余14只为正常对照组。糖尿病大鼠成模后,随机分成两组,糖尿病非药物干预组及阿托伐他汀干预组。干预组予阿托伐他汀(2mg/kg/day)灌胃,对照组及糖尿病非药物干预组给予等量饮用水。大鼠分别于3个月,6个月时按比例处死。取一眼视网膜组织抽提RNA,另一眼固定后做免疫组织化学观察。应用RT-PCR方法扩增NF-κB基因,比较3组大鼠
2、的NF-κB在基因水平上的表达差异。应用免疫组织化学方法来观察NF-κB在眼内的分布,并比较3组大鼠的差异。结果:PCR结果示糖尿病大鼠视网膜中NF-κB在基因水平上比正常大鼠明显增高(P<0.05),药物干预的大鼠,NF-κB的表达比糖尿病非药物干预组明显减少(P<0.05)。免疫组织化学方法证明在视网膜上NF-κB主要分布在血管层,糖尿病大鼠视网膜中NF-κB阳性的细胞比正常大鼠明显增多(P<0.05),且着色较深。阿托伐他汀干预组的大鼠中,NF-κB阳性的细胞比糖尿病大鼠明显减少(P<0.05),且着色较浅。结论:阿托伐他汀能降低糖尿病大鼠视网膜中NF-κBmRNA及
3、NF-κB蛋白质的表达,减缓视网膜病变进展。关键词:阿托伐他汀;糖尿病视网膜病变;NF-κBlocatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassination.Linping,Zhejiang,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),whogotAfewbayonets,duetomissedfatal,whennightcame作者单位:116001大连大学附属中山医院内分泌科(魏薇、于晓静、王晓梅、隋淼李湘);大
4、连大学附属中山医院病理科(朱瑞萍)通讯作者:于晓静邮编:yxj_y@sina.com大连市市卫生局资助课题,【2009】67locatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassination.Linping,Zhejiang,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),whogotAfewbayonets,duetomissedfatal,whennightcameExperimentalstudyofinfluence
5、ofAtrovastatinonexpressionofNF-κBinRetionpathyofDiabeticRatsWei-wei,YuXiao-jing,WANGXiao-mei,etal.EndocrinologyDepartmentofAfiliatedzhongshanHospitalofDaLianUniversity,Dalian116001,ChinaCorrespongdingauthor:YuXiao-jinglocatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassinatio
6、n.Linping,Zhejiang,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),whogotAfewbayonets,duetomissedfatal,whennightcameAbstractObjective:ToexploretheeffectsandmechanismofatrovastatinonexpressionoftheNF-κBonretionpathyofdiabeticrats.Methods:Atotalof42maleSDratswererandomlytakenout2
7、8tomakediabetesmodelbyinducedinjectionof65mgstreptozotocin(STZ)intoenterocoelia,therestwasnormalcontrolgroup.Afterthemodelmaded,atrovastatin(2mg/kg/d)weregiventhetreatedgroup,andnormalcontrolgroupanddiabeticratswithouttreatmentgroupwasgivenequivalentwater.Afte