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ID:18019639
大小:366.14 KB
页数:4页
时间:2018-09-12
《大鼠肝缺血及再灌注所致小肠过氧化损伤及丹参的保护作用》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据大鼠肝缺血及再灌注所致小肠过氧化损伤及丹参的保护作用张智勇陈孝平卢绮萍【摘要l目的观察大鼠肝缺血再灌注小肠过氧化损伤及丹参预处理的保护作用。方法首先将SD大鼠随机分为正常对照组(CO组)、假手术组(s0组)、缺血再灌注组(IR组)、丹参预处理组(SM组),分别在肝缺血30、45、60min时取上段空肠进行大体病理学检测;然后在肝缺血45min条件下,动物亦随机分为4组(CO组、s0组、IR组、SM组),按再灌注后不同时间(0、3、12、24、72h)分为5个亚组,每组5只。SM组在阻断第一肝门30rain前经尾静脉推注丹参注射液6g/kg由D生理盐水40ml/
2、kg,其余各组按40ml/ks给予生理盐水尾静脉注入,S0组开腹后仅解剖肝门,不钳夹肝蒂。分别在再灌注0、3、12、24、72h取上段空肠行病理学检查、丙二醛(MDA)含量测定、髓过氧化物酶(MP0)活性测定。结果空肠黏膜损伤评分随肝缺血时限延长而加重;在肝缺血45min再灌注不同时限点SM组空肠黏膜损伤较IR组明显减轻,且肠组织MDA含量、MPO活性均低于IR组(P3、ideinjuryinducedbyischemia/reperfusionandSalviaMilfiorrhizapretreatmentZHANGZhi一"增‘,CHENXiao-ping,LUQi-ping.‘HepaticSurgeryCenter,乃倒Hospital,To,硒iMedicalCollege。HuazhongUnwersityofScienceandTechnology,Wuhan430030,ChinaCorrespondingauthor:LUQi-ping,Email:ptwklqp@yahoo.com.c//,【Abstract】04、bjecfiveTostudytheintestinalperoxideinjuryinducedbyischemia/reperfusion(I/R)andSalviamihiorrhizapretreatment.MethodsSDratswererandomlydividedinto4groups:normalcontrolgroup(CO),sham—operatedgroup(SO),I/Rgroup(IR),salviamiltiorrhizapretreatmentgroup(SM).UpperjejuIlalsamplesweretakenat30,45、0,and60minofhepaticischemiaforgeneralpathologicalexamination.Undertheconditionofhepaticischemiafor45min,SDratswerealsorandomlydividedinto4groups:COgroup.SOgroup,IRgroup,SMgroup,andeachgroupweresubdividedinto5subgroupsaccordingtodifferentreperfusiontime(O,3,12,24,72h),5ineachsubgroup.孙er6、atsinSMgroupwereinjectedwith40mL/kgsalineand6g/kgSalviaMiltiorrhizaviacaudalvein30minbeforeclampinghepaticpedicle.andtherestgroupswereinjectedwith40ml/kgnormalsalineviacaudalvein.InS0group.onlyportahepaticwasdissectedandhepaticpedicleWasnotclampedafterlaparotomy.Thechangesoftheupperjeja7、numatdifferentreperfusiontimepoints(0,3,12,24,72h)wereobservedunderalightmicroscope.,11lecontentofmalondialdehyde(MDA),andactivityofmyelopemxidase(MPO)weredetermined.ResultsJejunalmucosalinjuryscorewasincreasedwiththeischemiatime.111escoreofjejunalmucosalinjuryinSMgroupWaslesst
3、ideinjuryinducedbyischemia/reperfusionandSalviaMilfiorrhizapretreatmentZHANGZhi一"增‘,CHENXiao-ping,LUQi-ping.‘HepaticSurgeryCenter,乃倒Hospital,To,硒iMedicalCollege。HuazhongUnwersityofScienceandTechnology,Wuhan430030,ChinaCorrespondingauthor:LUQi-ping,Email:ptwklqp@yahoo.com.c//,【Abstract】0
4、bjecfiveTostudytheintestinalperoxideinjuryinducedbyischemia/reperfusion(I/R)andSalviamihiorrhizapretreatment.MethodsSDratswererandomlydividedinto4groups:normalcontrolgroup(CO),sham—operatedgroup(SO),I/Rgroup(IR),salviamiltiorrhizapretreatmentgroup(SM).UpperjejuIlalsamplesweretakenat30,4
5、0,and60minofhepaticischemiaforgeneralpathologicalexamination.Undertheconditionofhepaticischemiafor45min,SDratswerealsorandomlydividedinto4groups:COgroup.SOgroup,IRgroup,SMgroup,andeachgroupweresubdividedinto5subgroupsaccordingtodifferentreperfusiontime(O,3,12,24,72h),5ineachsubgroup.孙er
6、atsinSMgroupwereinjectedwith40mL/kgsalineand6g/kgSalviaMiltiorrhizaviacaudalvein30minbeforeclampinghepaticpedicle.andtherestgroupswereinjectedwith40ml/kgnormalsalineviacaudalvein.InS0group.onlyportahepaticwasdissectedandhepaticpedicleWasnotclampedafterlaparotomy.Thechangesoftheupperjeja
7、numatdifferentreperfusiontimepoints(0,3,12,24,72h)wereobservedunderalightmicroscope.,11lecontentofmalondialdehyde(MDA),andactivityofmyelopemxidase(MPO)weredetermined.ResultsJejunalmucosalinjuryscorewasincreasedwiththeischemiatime.111escoreofjejunalmucosalinjuryinSMgroupWaslesst
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