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ID:37368679
大小:1.25 MB
页数:38页
时间:2019-05-22
《降纤酶对大鼠脑缺血再灌注后神经损伤的保护作用》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、郑硕士论文题目:作者姓名:学科门类:专业名称:导师姓名、职称:州大学位授予单位代码学号或申请号密级学论文降纤酶对大鼠脑缺血再灌注后神经损伤的保护作用白蓉医学临床神经病学张博爱教授2005年10月兰第l儿郑州凡学2【)05J1{;硕}。毕业论文降纤酶对大鼠脑缺血再灌注后神经损伤的保护作用研究生自蓉导师张博爱郑州大学第一附属医院神经内科郊卅l450052摘要目的观察降纤酶对缺血再灌注大鼠脑损伤的保护作用。方法采用大鼠脑缺血再灌注动物模型,观察降纤酶对大鼠脑缺血/再灌注不同时间点梗死体积、脑血流量、行为学评分、凋亡数目的影响。采用T
2、Tc染色法测量梗死体积、激光多谱勒血流仪监测血流量、神经功能缺损评分(Nss)评估行为学改变、凋亡数目的变化使用t岫el方法观察。结果与生理盐水组比较降纤酶组在缺血3h再灌注6h、24h,脑梗死体积减小(P(0.05),血流增加(P(0.05),在缺血3h再灌注3h、72h,脑梗死体积与生理盐水组比较无明显变化。降纤酶组动物行为学评分无明显改善,凋亡细胞数目随再灌注时间延长而渐增多,於24h达高峰,以后逐渐减少。降纤酶组凋亡细胞数变化趋势与对照组相同,但凋亡细胞数明显减少(P3、血/再灌注后的低灌注状态,挽救损伤神经细胞,减少神经细胞凋亡,减小脑梗死体积,扩大脑梗死治疗时间窗,对脑组织具有一定的保护作用。关键词I鞴燃梗嗍脑缺血j撇行为黼凋亡第2负琊州人学2005属坝fj毕业沧ZTheprotectiVeeffectofde胁船seonthece睫braIischemiareperfusi蚰ⅫuryPostgraugrate:BaiRongTutor;ZhangBouaiTheFirstAffiliatedHospitalofZhengzhOuUniVefsityAbsn·act0bJectiveTbd4、eterminetheprotectiveeffectofdefibraseonthecerebralischemiareperfusioninjuryintherats.MethodsAtVarioustimepointsinthemodelratsofccrebralischemiareperfusionafterdefibraseadministeredthechangesofcerebralinfarctvolumeweremeasufedwithTTCstain,thecerebralbloodnowwereinsp5、ectedbymeansofTheDopularBloodflowInstrument,thebehaviorscofeswereperfbmedwithNeurologicalseVefityscores(Nss)testatthetimejustafteroperationandbefbresacrificeandthenumberofapoptosiscellswercexaminedwithTUNELmethod.ResuItsThecerebralinfarctvolumewassjgnificantlydecrea6、sed(P<0.05)andthecerebralbloodnowwasincreasedwhenreperfusingfor6hand24hafterischemiafor3hindefibrasegroupscomparedwithsalinecontrOlgroups.However'ThcreisnodiffefenceincerebralinfarctVolumebetweendefibrasegroupsandthecontrDlgroupswhenreperfusingfor3hand72hafterischem7、iafor3h.1ndefibrasegroupsthescaleOfbehaviorwasnotimproVed.TheTUNEL-positiVecellswerepreferentiallylocatedintheinnerbOundaryzoneoftheinfactjonandprogressiVelyincreaseduptoandpeakedat24hafterreperfUsion,andthendecreasedgraudually,Thechangeabletendencyofbraincellapopto8、sisinthedefibrasegroupshaVealikewithcontrolgroups,thenumberoftheapoptoticcelldecreased(P
3、血/再灌注后的低灌注状态,挽救损伤神经细胞,减少神经细胞凋亡,减小脑梗死体积,扩大脑梗死治疗时间窗,对脑组织具有一定的保护作用。关键词I鞴燃梗嗍脑缺血j撇行为黼凋亡第2负琊州人学2005属坝fj毕业沧ZTheprotectiVeeffectofde胁船seonthece睫braIischemiareperfusi蚰ⅫuryPostgraugrate:BaiRongTutor;ZhangBouaiTheFirstAffiliatedHospitalofZhengzhOuUniVefsityAbsn·act0bJectiveTbd
4、eterminetheprotectiveeffectofdefibraseonthecerebralischemiareperfusioninjuryintherats.MethodsAtVarioustimepointsinthemodelratsofccrebralischemiareperfusionafterdefibraseadministeredthechangesofcerebralinfarctvolumeweremeasufedwithTTCstain,thecerebralbloodnowwereinsp
5、ectedbymeansofTheDopularBloodflowInstrument,thebehaviorscofeswereperfbmedwithNeurologicalseVefityscores(Nss)testatthetimejustafteroperationandbefbresacrificeandthenumberofapoptosiscellswercexaminedwithTUNELmethod.ResuItsThecerebralinfarctvolumewassjgnificantlydecrea
6、sed(P<0.05)andthecerebralbloodnowwasincreasedwhenreperfusingfor6hand24hafterischemiafor3hindefibrasegroupscomparedwithsalinecontrOlgroups.However'ThcreisnodiffefenceincerebralinfarctVolumebetweendefibrasegroupsandthecontrDlgroupswhenreperfusingfor3hand72hafterischem
7、iafor3h.1ndefibrasegroupsthescaleOfbehaviorwasnotimproVed.TheTUNEL-positiVecellswerepreferentiallylocatedintheinnerbOundaryzoneoftheinfactjonandprogressiVelyincreaseduptoandpeakedat24hafterreperfUsion,andthendecreasedgraudually,Thechangeabletendencyofbraincellapopto
8、sisinthedefibrasegroupshaVealikewithcontrolgroups,thenumberoftheapoptoticcelldecreased(P
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