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时间:2020-05-04
《人心房肌蛋白激酶C表达下调参与心房颤动发病机制-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、泸州医学院学报2014年第37卷第1期42JournalofLuzhouMedicalCollegeVo1.37No.12014¨血管疾病研究专栏·人心房肌蛋白激酶C表达下调参与心房颤动发病机制木范学慧,李涛,毛亮,李妙龄,谭晓秋,杨艳,曾晓荣(医学电生理省部共建教育部重点实验室,泸州医学院心肌电生理学研究室,四川I泸卅1646000)摘要目的:研究心房颤动(atrialfibriUauon,AF)时心房肌组织中PKC、8、£、04种亚型mRNA和PKC总蛋白的表达变化,探讨PKC与AF发生发展的相关性。方法:泸州医学院附属医院行体外循环手术患者常规切除的右心耳组织作为研究对象。①实时定量PC
2、R实验:提取人右心耳组织总RNA,~3-actin为内参照基因,采用SYBRGreenI法实时荧光定量PCR技术检测SR和AF患者PKCo【、6、e、0基因mRNA水平。(~)westernblotting实验:右心耳组织提取总蛋白,测定蛋白浓度,GAPDH作为内参照,SDS—PAGE电泳检测SR和AF患者PKC的蛋白表达变化。结果:①AF患者心房肌细胞PKC和PKC8亚基mKNA水平下调:PKC£和PKC0亚基mRNA水平明显上调。~SR组与AF组PKC总蛋白相对表达量分别为1.37±009(n=23)、1.00±O.10(n=18),(P3、患者心肌细胞中PKC0t、6亚基mRNA明显下调.PKC£、0亚基mRNA上调,PKC总蛋白表达降低。PKC亚型mRNA和总蛋白的表达变化可能是参与AF发生发展的分予基础之一。关键词心房颤动:蛋白激酶C;基因水平;蛋白水平中图分类号R541.7.5文献标识码Adoi:10.3969~.issn.1000—2669.2014.01.008DownregulationofhumanatrialproteinkinaseCinpathogenesisofatrialfibrillationFanXuehui,LiTao,MaoLiang,LiMiaoling,Tanxiaoqiu,YangYan,Z4、engXiaorongKeyLaboratoryofMinistryofEducationforMyocardialElectrophysiology,InstituteofCardiovasologyLuzhouMedicalcollegeAbstractObjective:TostudythechangesofmRNAexpressionofsubtype、6、£、0andtotalproteinofproteinkineseC(PKC)duringatrialfibrillation(AF),andtherelarionshipbetweenPKCandAF.Methods:Righta5、trialappendagesamplesfromheartdiseasepatientswereobtainedduringcardiacsurgery.TotalRNAwasextractedfromtheatrialtissuesandthePKCOL、6、s、0mRNAweredetectedbySYBRGreenIreal—timePCRwithB-actinasthereferencegene.18patientswithchronicatrialfibrillation(AFgroup)and23patientswithsinusrhythm(SR,ascontrolgroup)6、wereusedtoassesstheproteinexpressionofPKCbyWesternblo.t.Results:ComparedwithSRgroup,theleftatrialdiametersincreasedsignificantlyinAFgroup.ThereweresignificantdifferencesinmRNAexpressionofPKCo【、8、8、0betweentwogroups;theexpressionofPKC8andPKC0mRNAwasup-regula-tedandtheexpressionofPKC£andPKC0mRNAwasd0w7、n—regulatedsignificantlyinAFgroup(P<0.05).PKCproteinwassignificantlydecreasedinAFgroupcomparedwithSRgroup(P
3、患者心肌细胞中PKC0t、6亚基mRNA明显下调.PKC£、0亚基mRNA上调,PKC总蛋白表达降低。PKC亚型mRNA和总蛋白的表达变化可能是参与AF发生发展的分予基础之一。关键词心房颤动:蛋白激酶C;基因水平;蛋白水平中图分类号R541.7.5文献标识码Adoi:10.3969~.issn.1000—2669.2014.01.008DownregulationofhumanatrialproteinkinaseCinpathogenesisofatrialfibrillationFanXuehui,LiTao,MaoLiang,LiMiaoling,Tanxiaoqiu,YangYan,Z
4、engXiaorongKeyLaboratoryofMinistryofEducationforMyocardialElectrophysiology,InstituteofCardiovasologyLuzhouMedicalcollegeAbstractObjective:TostudythechangesofmRNAexpressionofsubtype、6、£、0andtotalproteinofproteinkineseC(PKC)duringatrialfibrillation(AF),andtherelarionshipbetweenPKCandAF.Methods:Righta
5、trialappendagesamplesfromheartdiseasepatientswereobtainedduringcardiacsurgery.TotalRNAwasextractedfromtheatrialtissuesandthePKCOL、6、s、0mRNAweredetectedbySYBRGreenIreal—timePCRwithB-actinasthereferencegene.18patientswithchronicatrialfibrillation(AFgroup)and23patientswithsinusrhythm(SR,ascontrolgroup)
6、wereusedtoassesstheproteinexpressionofPKCbyWesternblo.t.Results:ComparedwithSRgroup,theleftatrialdiametersincreasedsignificantlyinAFgroup.ThereweresignificantdifferencesinmRNAexpressionofPKCo【、8、8、0betweentwogroups;theexpressionofPKC8andPKC0mRNAwasup-regula-tedandtheexpressionofPKC£andPKC0mRNAwasd0w
7、n—regulatedsignificantlyinAFgroup(P<0.05).PKCproteinwassignificantlydecreasedinAFgroupcomparedwithSRgroup(P
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