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时间:2020-06-03
《阿托伐他汀通过PPARβ/δ信号通路下调衰老心肌TNF-α表达的研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、国际心血管病杂志2014年3月第41卷第2期IntJCardiovascDis,March2014,Vo1.41,No.2阿托伐他汀通过PPAR~/3信号通路下调衰老心肌TNF一表达的研究韩磊叶平李鸣皋【摘要1目的:观察阿托伐他汀下调老年大鼠心肌肿瘤坏死因子一a(TNF—a)表达的作用及其与过氧化物酶体增殖物激活型受体8/8(PPAR~/3)信号通路之间的关系。方法:分离培养24个月龄大鼠的心肌细胞,将心肌细胞分为空白对照组、溶剂对照组、阿托伐他汀组、阿托伐他汀+PPARI3/a拮抗剂GSK0660组。各组细胞分别加入细胞培养液、二
2、甲基亚砜(DMSO)、阿托伐他汀、阿托伐他汀+GSK0660处理。用RT—PCR方法检测各组大鼠衰老心肌细胞的TNF—rnRNA表达水平,用westernblot方法检测各组TNF—a蛋白含量。结果:(1)与空白对照组相比,溶剂对照组大鼠衰老心肌细胞的TNF—dmRNA和蛋白水平均无显著差异;(2)与空白对照组相比,阿托伐他汀组的TNF—drnRNA和蛋白水平含量均显著降低(P<0.01);(3)阿托伐他汀+GSK0660组的TNF—aITIRNA表达水平及蛋白含量均显著高于阿托伐他汀组,但仍低于空白对照组(P<0.05)。结论:阿
3、托伐他汀可通过激活PPARft/3信号通路下调衰老心肌细胞TNF—d的表达。【关键词】阿托伐他汀;衰老;过氧化物酶体增殖物激活物受体J3/;肿瘤坏死因子一adoi:10.3969/.issn.1673—6583.2014.02.017Atorvastatindown-regulatesTNF-~~expressioninagingcardiomyocytesbyPPARp/6pathwayHANLei,YEPing,LjMing—gao1.AviationandNauticalMedicalCenter,PLANavyGeneral
4、Hospita1.Beijing100048,China;2.SecondDepartmentofGeriatricCardiology,PLAGeneralHospital。Beijing100853,China[Abstract]Objective:Toinvestigatetheeffectsofatorvastatinontumornecrosisfactor-a(TNF-a)expressioninagingeardiomyocytesandtheroleofperoxisomeproliferatoractivatedr
5、eceptor8/8(PPARI?/3)signalpathway.Methods:Senescentcardiomyocytesobtainedfromagingratsof24monthsoldwererandomlydividedintocontrolgroup,DMSOgroup,atorvastatingroupandatorvastatin+GSK0660group,whichweretreatedbycellculturemedium,DMSO,atorvastatin,atorvastatin+GSK0660,res
6、pectively.ThemRNAlevelsofTNF—QwereevaluatedbyRT—PCR,andtheproteincontentsofTNF一weredetectedbywesternblot.Results:(1)TherewereriodifferencesinthemRNAandproteinlevelsofTNF-abetweencontrolgroupandDMSOgroup(P>0.05);(2)ThemRNAandproteinlevelsofTNF—dinatorvastatingroupweresi
7、gnificantlylowerthanthoseincontrolgroup(P<0.01);(3)BothmRNAandproteinexpressionofTNF-ainatorvastatin+GSK0660groupwerehigherthanthoseinatorvastatingroup(P%0.05orP%0.O1),butwerelowerthanthoseincontrolgroup(P<().05).Conclusion:Atorvastatincandown-regulateTNF—aexpressionin
8、senescentcardiomyocytesbyactivatingPPARft/asignalpathway.[Keywords]Atorvastatin;Aging;Peroxisomeproliferatoractivated
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