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ID:38118804
大小:1.03 MB
页数:4页
时间:2019-05-25
《吗啡预处理对兔心肌的延迟性保护作用》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、中南大学学报(医学版)2009,34(2)http://xbyx.xysm.netJCentSouthUniv(MedSci)135吗啡预处理对兔心肌的延迟性保护作用122龙利民,邹定全,谭嵘(中南大学湘雅二医院1.老年病科;2.麻醉科,长沙410011)[摘要]目的:研究吗啡预处理是否对兔心肌具有延迟性保护作用。方法:将30只健康新西兰大白兔随机分为生理盐水预处理组(NS组)、吗啡预处理12h组(Mor12组)、吗啡预处理24h组(Mor24组),每组10只。NS组用生理盐水静脉输注预处理,Mor12组
2、和Mor24组用吗啡3mg/kg静脉输注预处理,12h(Mor12组)或24h(NS组、Mor24组)后阻断冠状动脉左前降支30min,再灌注120min。其中8只于缺血前(T1)、缺血30min(T2)、再灌注后120min(T3)抽取动脉血测定血清肌钙蛋白I(cardiactroponinI,cTnI)的浓度,并于再灌注毕测定心肌梗死面积,另2只于再灌注毕取心肌行电镜检查,观察心肌细胞超微结构损伤。结果:T2和T3时Mor24组的cTnI浓度低于NS组和Mor12组;Mor24组的心肌梗死面积和
3、心肌细胞超微结构损伤小于NS组和Mor12组。结论:吗啡预处理对兔心肌具有延迟性保护作用。[关键词]吗啡;预处理;心肌保护[中图分类号]R614[文献标识码]A[文章编号]16727347(2009)02013504Delayedprotectiveeffectofmorphinepreconditioningonrabbitmyocardium122LONGLimin,ZOUDingquan,TANRong(1.DepartmentofGeriatrics;2.DepartmentofAnesthes
4、iology,SecondXiangyaHospital,CentralSouthUniversity,Changsha410011,China)Abstract:ObjectiveToinvestigatewhethermorphinepreconditioninghasthedelayedprotectiveeffectonrabbitmyocardium.MethodsThirtyNewZealandwhiterabbitswererandomlydividedintoaNSgroup,aMor12g
5、roupandaMor24group(n=10).IntheMor12groupandMor24group,morphine(3mg/kg)wasinfusedintorabbits,whilethesamevolumeofnormalsaline(NS)wasgiventorabbitsintheNSgroup.TwelvehoursaftermorphineinfusionintheMor12group,24hafterNSormorphineinfusionintheNSgroupandMor2
6、4group,rabbitsweresubjectedto30minleftanteriordescendingcoronaryarteryocclusionsandwerereperfusedfor120min.In8ofthe10rabbitsineachgroup,arterialbloodsamplesweretakenbeforetheischemia(T1),30minaftertheischemia(T2)and120minafterthereperfusion(T3)todetermineth
7、econcentrationofcardiactroponinI(cTnI),andthemyocardialinfarctareawasdeterminedattheendofreperfusion.Intheother2ofthe10rabbitsineachgroup,thecellultramicrostructureinjuryofmyocardiumwasexaminedbyelectronmicroscopeattheendofreperfusion.ResultsTheconcentratio
8、nofcTnIatT2andT3intheMor24groupwaslowerthanthatintheNSgroupandMor12group.Themyocardialinfarctsize,andcellultramicrostructureinjuryofmyocardiumintheMor24groupweredecreased收稿日期(Dateofreception)
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