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《依那普利對(duì)高糖誘導(dǎo)的大鼠腎小球系膜細(xì)胞產(chǎn)生tgfβ1、ln及ctgf表達(dá)的影響》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、依那普利對(duì)高糖誘導(dǎo)的大鼠腎小球系膜細(xì)胞產(chǎn)生TGFβ1、LN及CTGF表達(dá)的影響作者:彭爽曹文富陳平唐靜【摘要】目的觀察依那普利(Enalapril,Ena)對(duì)高糖誘導(dǎo)的大鼠腎小球系膜細(xì)胞(GMCs)轉(zhuǎn)化生長(zhǎng)因子β1(TGFβ1)、層黏連蛋白(LN)及結(jié)締組織生長(zhǎng)因子(CTGF)表達(dá)的影響。方法大鼠GMCs分別培養(yǎng)于正常濃度葡萄糖(5.5mmol/L)、高濃度葡萄糖(20mmol/L)及高糖和不同濃度(10-7mol/L、10-6mol/L、10-5mol/L)的Ena中,同時(shí)設(shè)空白對(duì)照。分別采用放射免疫法、酶聯(lián)免疫吸附實(shí)驗(yàn)(EL
2、ISA)檢測(cè)不同時(shí)間(24、48、72h)細(xì)胞培養(yǎng)上清液中TGFβ1、LN含量,采用逆轉(zhuǎn)錄聚合酶鏈反應(yīng)(RTPCR)檢測(cè)72h細(xì)胞CTGFmRNA的表達(dá)。結(jié)果與空白對(duì)照組比較,正常糖組和高糖組TGFβ1分泌增加、LN合成增多、CTGF表達(dá)上調(diào)(P<0.001),高糖組更明顯(P<0.001)。與高糖組比較,高、中、低濃度的Ena干預(yù)均可逆轉(zhuǎn)上述變化。結(jié)論高糖可致GMCs分泌TGFβ1增加、合成LN增多、CTGF表達(dá)上調(diào),Ena可減少細(xì)胞外基質(zhì)(ECM)積聚,下調(diào)CTGF表達(dá),從而有利于延緩糖尿病腎病腎小球硬化(GS
3、)的進(jìn)展?!娟P(guān)鍵詞】依那普利;腎小球系膜細(xì)胞;轉(zhuǎn)化生長(zhǎng)因子β1;層黏連蛋白;結(jié)締組織生長(zhǎng)因子11 【Abstract】ObjectiveToinvestigatetheeffectofenalaprilontheproductionoftransforminggrowthfactorβ1(TGFβ1),laminin(LN)andconnectivetissuegrowthfactor(CTGF)inratglomerularmesangialcells(GMCs)cultivatedunderhighglucose.Meth
4、odsGMCswereculturedwithnormalconcentrationglucose(NG,5.5mmol/L),highconcentrationglucose(HG,20mmol/L),andHGplusdifferentconcentrationofenalaprilfordifferentduration(24h,48h,72h),andblankcontrolwassetupsimultaneously.ThecontentsofTGFβ1,LNinthesupernatantofcultured.GMCsw
5、eredetectedbyRIA,ELISA,respectively,andtheexpressionofCTGFwasdetectedbyRTPCR.ResultsComparedwiththoseinblankcontrolgroup,thecontentsofTGFβ1,LNwerehigherthanthoseinNGandHGgroups(P<0.001),andtheexpressionofCTGFwasupregulatedinNGandHGgroups(P<0.001),HGgroupwasmore
6、significant(P<0.001).ComparedwiththoseinHGgroup,HGplushigh,middle,lowconcentrationofenalaprilgroupshadsignificantlylowerTGFβ1,LNinthesupernatantofculturedGMCs(P<0.005),anddecreasedtheexpressionofCTGF.ConclusionsGMCscanincreasethesecretionofTGFβ1,synthesisofLN,ex
7、pressionofCTGFinducedbyhighglucose.Enalaprilcanreduceaccumulationofextracelluarmatrix(ECM),11anddownregulatetheexpressionofCTGF,thendelaytheprogressionofglomerularsclerosisofdiabeticnephropathy. 【Keywords】Enalapril;Glomerularmesangialcell;Transforminggrowthfactorβ1;L
8、aminin;Connectivetissuegrowthfactor 糖尿病腎病(DN)早期高血糖即可引起腎小球系膜細(xì)胞(GMCs)增殖,過(guò)度增殖的GMCs產(chǎn)生和釋放轉(zhuǎn)化生長(zhǎng)因子β1(TGFβ1)、結(jié)締組織生長(zhǎng)因子