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时间:2020-05-14
《复氧损伤乳鼠心肌细胞钙超载的影响.pdf》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、·644·中国中医药科技2014年11月第21卷第6期Nov.2014Vo1.21No.6山茱萸总苷对缺氧/复氧损伤乳鼠心肌细胞钙超载的影响水侯祥平李建军潘爱珍林玉洁陈克芳(中山大学孙逸仙纪念医院·广州510120)摘要目的:从抑制钙超载的角度探讨山茱萸总苷保护心肌细胞的作用机制。方法:采用乳鼠心肌细胞原代培养方法获得正常心肌细胞并建立缺氧/复氧损伤细胞模型,实验分正常组、模型组和山茱萸总苷低中高剂量组,培养24小时后进行细胞缺箪/复氧处理,采用Flue4一AM荧光探针检测心肌细胞胞浆内钙离子浓度;An
2、nexinV/PI双染法检测心肌细胞总凋亡率。结果:缺氧/复氧损伤组心肌细胞胞浆内钙离子浓度显著升高(P<0.01),山茱萸总苷低、中、高剂量可明显降低心肌组织内钙离子浓度(P<0.05,P<0.01);缺箪/复氧模型心肌细胞凋亡率明显升高,中、高剂量山茱萸总苷可明显降低心肌细胞凋亡率(P<0.01)。结论:山茱萸总苷中、高剂量预处理可以抑制缺氧/复氧损伤心肌细胞的钙超载,可能是其抗心肌细胞凋亡,保护心肌的作用机制之一。关键词缺氧复氧损伤山茱萸总苷心肌细胞钙超载细胞凋亡乳鼠EffctsofComusAf
3、ieinalisGlycosidesonCalciumOverloadofNeonatalRats’MyocardiumCellsInjuriedbyHypoxia/ReoxygenationH0UXiang—ping,LIJian-jun,PANAi-zhen,etal(SunYat—senMemorialHospitalofSunYat—senUniversity,Guangzhou510120)ABSTRACrObjective:ToobservetheefectsofComusoffieinal
4、isglycosidesonapoptosisand[Ca2]iinculturedhypoxiacardiomyocytes,andexplorethemechanismofmyocardialprotection.Methods:Primarilycul-turedneonaterats’eardiomyocyteswereusedtoestablishthehypoxiamodels,experimentWasdividedintonor-mal,modelandGlycosideslow,mid
5、dle,highdosesgroups.eachgroupwasculturedfor24houmbeforehypoxia/reoxygenation,[Ca2]iofeardiomyocytesioadedbyHuo4一AMWasanalyzedbyflowcytometry(FCM),theap.optosispercentageofeardiomyocyteswasmeasul~byAnnexinV/PIFCM.Results:Calciuminhypoxiacardiacmyocytesinj
6、urygroupwassignificantlyhigher,theintracellularcalciumionconcentrationofthemiddleandhighdoseGlycosidesWaSobviouslylowered,theapoptosispreeentogeofcardiomyocytesinmodelgroupwasobviouslyincreased,thatofmiddleandhishdosegroupsWassignifcantlydecreased(P<0.05
7、).Conclusions:Comusofti.cinalisglycosidesVaninhibitintraeellularcalciumoverload,whichmaybetheinhibitionofeardiomyocyteapop-tosis,thatmaybethemechanismofmyocardialprotectionofComusoficinalisglycosides.Keywords:hypoxioy/reoxygenationinjuryComusafieinalisgl
8、ycosideseardiomyocytecalciumoverloadapoptosisofceUsneonatalrat山茱萸(ComusofieinalisSieb.etZuce.),又名蜀枣,出度探讨山茱萸的有效成分一山茱萸总苷抗细胞凋亡、保护自《神农本草经》,其味酸、涩,微温,归肝、肾经,具有补益肝心肌的作用机制,冀希为临床应用提供实验依据。肾、收敛固涩的作用。长期临床实践表明,山茱萸可以有效1材料缓解胸痛、胸闷、心悸气短等症状,
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