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ID:32916032
大小:6.96 MB
页数:44页
时间:2019-02-17
《骨形成蛋白7对肝纤维化中e3泛素连接酶表达的干预研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、温州医学院硕士学位论文骨形成蛋白7对肝纤维化中E3泛素连接酶表达的干预研究姓名:申春燕申请学位级别:硕士专业:内科学指导教师:陈永平2012-05骨形成蛋白7对肝纤维化中E3泛素连接酶表达的干预研究摘要目的:探索E3泛素连接酶Arkadia在四氯化碳致小鼠肝纤维化中的动态表达,以及BMP7对其阻断作用。方法:30只健康雄性ICR小鼠,随机分为正常对照组(6只)、模型组(18只)和BMP7干预组(6只);模型组再按不同的时间点分为4周、8周、12周3个亚组。在小鼠双后肢皮下交替注射60%四氯化碳/花生油溶液(5ml/Kg),每周2次,
2、共持续12周,制备肝纤维化模型;BMP7干预组在皮下注射四氯化碳的同时,从第9周始腹腔注射骨形成蛋白7(300pg/g)溶液,隔天一次,共4周。苏木素一伊红(HE)和Masson染色观察肝组织病理变化;用反转录酶一聚合酶链锁反应(RT—PCR),免疫组化和免疫印记(westernblotting)法检测肝组织中Arkadia信使核糖核酸(mRNA)及蛋白的表达。结果:成功建立了肝纤维化模型。模型组ArkadiamRNA的表达量在纤维化过程中逐渐升高,BMP一7干预组其表达量又降低,与对照组相比,差异有统计学意义(F=812.801,
3、P4、肝纤维化作用并可以抑制纤维化过程中Arkadia的表达。关键词肝纤维化;E3泛素连接酶Arkadim骨形成蛋白一7;转化生子因子B1;动物模型2Interventionolbonemorphogeneticprotein-70ntlle—J●n’’···一一’expressionofE3ubiquitinligaseintheliverfibrosisprogressionAbstractobjectiveToobservethedynamicexpressionofE3ubiquitinligaseArkadiainmicemod5、elofliverfibrosis,andtheexpressionchangeafterBMP-7treatment.MethodsThirtyhealthymaleICRmicewererandomlyassignedtothreegroups:normal(n=6),modelgroup(n218)andtreatmentgroupofBMP7(n26);Modelgroupwasfurtherdividedintothreesubgroups(n26×3)accordingtodifferenttimepoints:4,8a6、nd12weeks.Liverfibrosiswasinducedbyalternatelyrepeatedhypodermicinjectionof60%CCL4/peanutoil(5ml/Kg)tothehindlegsofmice,and2timesperweekforaperiodof12weeks.ForBMP一7treatmentgroup,miceweretreatedbyrepeatedintraperitonealinjectionofbonemorphogeneticprotein一7(BMP.7,300pg/7、g)from9weeksatthesametimerepeatedhypodermicinjectionof60%CCLdpeanutoil,andeveryotherdayforaperiodof4weeks.ThepathologicalchangesofliverwereobservedbyHematoxylin-Eosin(HE)andMassonStaining.MessengerRNA(mRNA)andproteinexpressionofliverArkadiawereevaluatedusingRT-PCR,immu8、nohistochemistryandwesternblotting.ResultsMicemodelsofliverfibrosisweresuccessfullyestablished.ThegeneexpressionofArk
4、肝纤维化作用并可以抑制纤维化过程中Arkadia的表达。关键词肝纤维化;E3泛素连接酶Arkadim骨形成蛋白一7;转化生子因子B1;动物模型2Interventionolbonemorphogeneticprotein-70ntlle—J●n’’···一一’expressionofE3ubiquitinligaseintheliverfibrosisprogressionAbstractobjectiveToobservethedynamicexpressionofE3ubiquitinligaseArkadiainmicemod
5、elofliverfibrosis,andtheexpressionchangeafterBMP-7treatment.MethodsThirtyhealthymaleICRmicewererandomlyassignedtothreegroups:normal(n=6),modelgroup(n218)andtreatmentgroupofBMP7(n26);Modelgroupwasfurtherdividedintothreesubgroups(n26×3)accordingtodifferenttimepoints:4,8a
6、nd12weeks.Liverfibrosiswasinducedbyalternatelyrepeatedhypodermicinjectionof60%CCL4/peanutoil(5ml/Kg)tothehindlegsofmice,and2timesperweekforaperiodof12weeks.ForBMP一7treatmentgroup,miceweretreatedbyrepeatedintraperitonealinjectionofbonemorphogeneticprotein一7(BMP.7,300pg/
7、g)from9weeksatthesametimerepeatedhypodermicinjectionof60%CCLdpeanutoil,andeveryotherdayforaperiodof4weeks.ThepathologicalchangesofliverwereobservedbyHematoxylin-Eosin(HE)andMassonStaining.MessengerRNA(mRNA)andproteinexpressionofliverArkadiawereevaluatedusingRT-PCR,immu
8、nohistochemistryandwesternblotting.ResultsMicemodelsofliverfibrosisweresuccessfullyestablished.ThegeneexpressionofArk
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