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ID:28285662
大小:7.38 MB
页数:45页
时间:2018-12-09
《卡托普利对于大鼠心肌梗死后心室重构时mmp-9及lpo表达的影响》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、广东医学院硕士学位论文卡托普利对于大鼠心肌梗死后心室重构时MMP-9及LPO表达的影响姓名:代西艳申请学位级别:硕士专业:@指导教师:杨景宁201005卡托普利对于大鼠心肌梗死后心室重构时MMP一9及LP0表达的影响中文摘要【目的】急性心肌梗死后,常发生不同程度的心室重构。本研究旨在探讨大鼠急性心肌梗死(AMI)后2周血清中基质金属蛋白酶9(MMP.9)和脂质过氧化物(LPo)的变化,以及卡托普利对心室重构时MMP.9和LPo表达的影响。【方法】采用左冠状动脉前降支结扎法建立大鼠心肌梗死模型。45只雄性SD大鼠被随机分为正常对照组组(n=15)、心肌梗死对照组(急性心肌梗死未给药组,n
2、=15)、心肌梗死卡托普利于预组(100mg/1(∥dn=15)。手术后2周测定反应心室重构形态学及生化参数。处死大鼠后取出心脏,测定左室心脏重量指数(I,WI)和左室长轴径(LVLA),可反映左室肥厚程度和扩张程度,并制作病理组织切片,观察各组心肌胶原的变化。用夹心酶联免疫吸附测定法(ELISA法)测定血清中MMP.9和LPo的表达水平。【结果】心肌梗死后2周,与正常对照组相比较,所有心肌梗死组I,VwI、LVlA、MMP一9及LPO均明显升高(p3、鼠心肌梗死后2周,血清中MMP.9升高,卡托普利可抑制其升高。2.大鼠心肌梗死后2周,血清中LPO升高,卡托普利可抑制其升高。3.大鼠心肌梗死后2周,左室出现心室重构,卡托普利可改善心室重构。【关键词】心肌梗死,心室重构,基质金属蛋白酶,脂质过氧化物,卡托普利,大鼠Ef.fectofCaptoprilonExpressionsofMMP-9andLPOinRatswithVbnt“cularRemodelingafterAcuteMyocardialInfarctionABSTRACT【objectives】Acutemyocardialinf.arctionoReIl印pearSdi4、毹rentde黟eeofv胁tricularremodeling.Thisresearchaimst0inVestigatethechangesofmatrixmetalloproteinase一9(MMP一9)andlipidperoxides(LPo)inratSaRcracutemyocardialinf.arCtion(AMI)撕o、№eksandthee髓ctofcapto研IonexpressionsofMMP.9肌dLPOinratswithVentricular—玎nodeling.【Methods】AMImodelinratswasestablisedbyligati5、ngt11eleRant舐orde∞endingcoronar),arte哆Forty-jFiVemaleSDratswercmdomlydevid。dintothree簪oups鹪follow:no册alcoIl仃olgroup(n=l5)、AMIcon们lgroup(notherapyn=l5)、capt0砸lgroup(100mg/l(g脚n2l5).TwoweeksaRcroperation,、粑me弱uredmorphology孤ldbioch锄is时’spar锄eterswhichreflectVentricularremodeling.LeRv吼tricul盯weigll6、index(LVWI)aJldIeftVefltricularlongaxis(LVLA)wcremeaSured雄erratsbeingkilled.T11eywereusedtorenectthedegreeoflenventricularhypenrolmy觚ddistellsion.Histopatholo西cslidew嬲madetoobseⅣechallgesincollag锄ofalIgroups.ExpressionsofMMP·9andU’oinbloodserumweremeasuredwimELISA.【Re蛐Its】Comparedwithno姗alcontro7、lgroup眺LVWI、LVLA、MMP一9andLPOofallAMI目∞upratsweresigni6cantIyincreaSedattwoweeksaR盯AMI(p
3、鼠心肌梗死后2周,血清中MMP.9升高,卡托普利可抑制其升高。2.大鼠心肌梗死后2周,血清中LPO升高,卡托普利可抑制其升高。3.大鼠心肌梗死后2周,左室出现心室重构,卡托普利可改善心室重构。【关键词】心肌梗死,心室重构,基质金属蛋白酶,脂质过氧化物,卡托普利,大鼠Ef.fectofCaptoprilonExpressionsofMMP-9andLPOinRatswithVbnt“cularRemodelingafterAcuteMyocardialInfarctionABSTRACT【objectives】Acutemyocardialinf.arctionoReIl印pearSdi
4、毹rentde黟eeofv胁tricularremodeling.Thisresearchaimst0inVestigatethechangesofmatrixmetalloproteinase一9(MMP一9)andlipidperoxides(LPo)inratSaRcracutemyocardialinf.arCtion(AMI)撕o、№eksandthee髓ctofcapto研IonexpressionsofMMP.9肌dLPOinratswithVentricular—玎nodeling.【Methods】AMImodelinratswasestablisedbyligati
5、ngt11eleRant舐orde∞endingcoronar),arte哆Forty-jFiVemaleSDratswercmdomlydevid。dintothree簪oups鹪follow:no册alcoIl仃olgroup(n=l5)、AMIcon们lgroup(notherapyn=l5)、capt0砸lgroup(100mg/l(g脚n2l5).TwoweeksaRcroperation,、粑me弱uredmorphology孤ldbioch锄is时’spar锄eterswhichreflectVentricularremodeling.LeRv吼tricul盯weigll
6、index(LVWI)aJldIeftVefltricularlongaxis(LVLA)wcremeaSured雄erratsbeingkilled.T11eywereusedtorenectthedegreeoflenventricularhypenrolmy觚ddistellsion.Histopatholo西cslidew嬲madetoobseⅣechallgesincollag锄ofalIgroups.ExpressionsofMMP·9andU’oinbloodserumweremeasuredwimELISA.【Re蛐Its】Comparedwithno姗alcontro
7、lgroup眺LVWI、LVLA、MMP一9andLPOofallAMI目∞upratsweresigni6cantIyincreaSedattwoweeksaR盯AMI(p
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