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ID:33953785
大小:4.11 MB
页数:39页
时间:2019-03-02
《哮喘大鼠磷酸化erk1%2f2及mmp-9表达变化及布地奈德对其影响》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、摘要目的:研究哮喘大鼠肺组织中磷酸化的细胞外信号调节激酶1/2(EIⅨl/2)及基质金属蛋白酶.9(MMP.9)的表达,探讨ERK信号通路与MMP.9在支气管哮喘气道重塑中的作用,两者的相互关系,以及雾化吸入布地奈德(BUD)的干预作用。方法:本实验以4-6周龄SD大鼠为实验对象,将30只大鼠随机分为正常对照组(对照组),哮喘模型组(哮喘组),布地奈德干预组(BUD组),每组10只,哮喘组及BUD组于第l天、第8天分别给予卵清蛋白(0VA)致敏液腹腔注射致敏,第15天开始将大鼠置于不完全封闭的容器内给予OVA雾化激发,每次30分钟,隔天1次,共8周,BUD组每次OVA雾
2、化激发前30分钟给予lmgBUD雾化,在末次激发后24h内处死大鼠后提取肺组织,观察大鼠肺组织病理变化,利用免疫组化方法检测各组肺组织中磷酸化的ERKl/2(p.ERKl/2)及MMP.9的表达。p-ERKl/2及MMP.9免疫组化制作完成以后,400倍高倍镜下,每张切片随机选取5个视野,用ImageProPlus图像分析软件测定肺组织中p-ERKl/2及MMP.9的累积光密度(IOD)值,取其平均值作为每张切片的代表值。结果:1、肺组织病理改变:HE染色示对照组显示正常小气道和肺泡结构。哮喘组气道上皮细胞坏死脱落,气道壁增厚,气道和血管周围炎性细胞浸润。BUD组上述改
3、变较哮喘组减轻。2、免疫组化方法分别检测肺组织中p-ERKl/2及MMP.9的表达。2.1.各组大鼠肺组织中p-ERKl/2表达的比较:与对照组比较,哮喘组p-ERKl/2表达显著升高,差异有统计学意义(P<0.01),BUD组与哮喘组比较p-ERKl/2显著降低,差异有统计学意义(尸4、织中p-ERKl/2及MMP.9相关性分析:哮喘组、BUD组大鼠肺组织中p-EKKl/2及MMP.9的表达量均呈正相关,均具有统计学意义(尸5、进一步寻找新的治疗靶点。关键词:布地奈德;哮喘;气道重塑;细胞外信号调节激酶1/2(ERKl/2);基质金属蛋白酶.9(MMP.9);AbstractABSTRACTobjectives:Tostudytheexpressionofphosphorylatedextracellularsignalregulatingl【inase1/2(ERKl/2)andmatrixmetalloproteinase·9(MMP一9)inasthmaticratlungtissue,theroleofERKsignalingpathwaysandMMP-9inasthmaairway6、remodeling,therelationshipbetweeneachotherandtheeffectofbudesonideontheexpression.MethodsThisexperimentin4-6weeksSDratsasexperimentalobjects.30ratswererandomlydividedintonormalcontrolgroup(controlgroup),Asthmamodelgroup(asthmagroup),budesonideinterventiongroup(BUDgroup),10ineachgroup.Gro7、upBandgroupCweregivenOVA(ovalbumin)byintraperitonealinjectiononday1,day8.AsthmagroupandBUDinday1,day8,respectivelygiveovalbumin(ovalbuminandOVA)byintraperitonealinjectionofsensitizationliquidsensitization,onday15,theratswerechallengedbyOVAinacontainerwithnotcompletelyairt
4、织中p-ERKl/2及MMP.9相关性分析:哮喘组、BUD组大鼠肺组织中p-EKKl/2及MMP.9的表达量均呈正相关,均具有统计学意义(尸5、进一步寻找新的治疗靶点。关键词:布地奈德;哮喘;气道重塑;细胞外信号调节激酶1/2(ERKl/2);基质金属蛋白酶.9(MMP.9);AbstractABSTRACTobjectives:Tostudytheexpressionofphosphorylatedextracellularsignalregulatingl【inase1/2(ERKl/2)andmatrixmetalloproteinase·9(MMP一9)inasthmaticratlungtissue,theroleofERKsignalingpathwaysandMMP-9inasthmaairway6、remodeling,therelationshipbetweeneachotherandtheeffectofbudesonideontheexpression.MethodsThisexperimentin4-6weeksSDratsasexperimentalobjects.30ratswererandomlydividedintonormalcontrolgroup(controlgroup),Asthmamodelgroup(asthmagroup),budesonideinterventiongroup(BUDgroup),10ineachgroup.Gro7、upBandgroupCweregivenOVA(ovalbumin)byintraperitonealinjectiononday1,day8.AsthmagroupandBUDinday1,day8,respectivelygiveovalbumin(ovalbuminandOVA)byintraperitonealinjectionofsensitizationliquidsensitization,onday15,theratswerechallengedbyOVAinacontainerwithnotcompletelyairt
5、进一步寻找新的治疗靶点。关键词:布地奈德;哮喘;气道重塑;细胞外信号调节激酶1/2(ERKl/2);基质金属蛋白酶.9(MMP.9);AbstractABSTRACTobjectives:Tostudytheexpressionofphosphorylatedextracellularsignalregulatingl【inase1/2(ERKl/2)andmatrixmetalloproteinase·9(MMP一9)inasthmaticratlungtissue,theroleofERKsignalingpathwaysandMMP-9inasthmaairway
6、remodeling,therelationshipbetweeneachotherandtheeffectofbudesonideontheexpression.MethodsThisexperimentin4-6weeksSDratsasexperimentalobjects.30ratswererandomlydividedintonormalcontrolgroup(controlgroup),Asthmamodelgroup(asthmagroup),budesonideinterventiongroup(BUDgroup),10ineachgroup.Gro
7、upBandgroupCweregivenOVA(ovalbumin)byintraperitonealinjectiononday1,day8.AsthmagroupandBUDinday1,day8,respectivelygiveovalbumin(ovalbuminandOVA)byintraperitonealinjectionofsensitizationliquidsensitization,onday15,theratswerechallengedbyOVAinacontainerwithnotcompletelyairt
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