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《血红素氧合酶-1对脂多糖诱导的急性心肌细胞损伤细胞内钙离子浓度的影响》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、江两医药2010年7月第45卷第7期Jian~iMedicalJournal,Jul2010,Vo1.45。No.7·实验研究·血红素氧合酶一1对脂多糖诱导的急性心肌细胞损伤细胞内钙离子浓度的影响;l:杨人强洪葵吴延庆王伶李萍吴清华程晓曙【摘要】目的研究HO一1对脂多糖刺激的心肌细胞内钙离子含量的影响。方法差速贴壁法培养乳鼠心肌细胞,分为对照组(C),脂多糖LPs组fL1,LPS+Hemin组(L+H),LPS+ZnPP组fL+Zn),分别诱导或阻断HO—l的合成,并检测心肌细胞内钙离子含量。结果LPS诱导心肌细胞钙离子含量升高,Hemin增加HO
2、一1水平.降低细胞内钙离子水平,ZnPP降低HO一1水平,细胞内钙离子浓度进一步增加。结论IS刺激使心肌细胞内钙离子含量明显升高.HO—l可降低细胞内钙超载。f关键词】血红素氧合酶一1;心肌细胞;炎症因子;钙离子f中图分类号】R329.28Theeffectofhemeoxygenase-1onCa“inIip0polysaccharide—inducedacuteeardiocyteinjuryYangRenqiang,HongKui,WuYanqing,eta1.Departmentofcardiovasculardisease,theseco
3、ndaffiliatedhospitalofNanchanguniversity,Nanchang,330006,China【Abstract]ObjectiveHeineoxygenase-1(HO一1),therate-limitingenzymeinhemecatabolism,hasbeenshowntobeinducedininflammatorydisease,andactsasanimportantcellulardefensemechanismagainstcellinjury.Inthisstudy,theefectofHO-1o
4、nCawasstudiedinamodeloflipop0lysaccharide—inducedacutecardiocyteinjury.MethodsCardiocytewasculturedwithdifferentadherence,andwasenrolledintogroupcontrol,groupofLPS+Hemin(L+H),andgroupofLPS+ZnPP(L+Zn).ThelevelofHO-1andCa“wasmeasuredwithRT—PCR.Westernblottingandfloweytometry.res
5、pectively.ResultsWefoundthatLPStreatmentofcardio·cyteresultedinsevereincreaseofCa.WhereasupregulationofHO一1byheroinpretreatmentdecreasedthelevelofCa“.InhibitionofHO-1activitybyzincprotoporphyrin-9(ZnPP,aspecificinhibitorofHO)makethelevelofCa“morehigh.ConclusionThesedatatherefo
6、reshowedthatthelevelofCa2+wasincreasedinthemodelofLPS-inducedacutecardiocyteinjury.Thischangecanbeinhib—itedbyHO-1partly.[Keywords】hemeoxygenase-1;cardiocyte;inflammationfactor;Ca脂多糖(LPS)是内毒素的主要成份,在重症心的研究发现HO—l可减轻内毒素/LPS诱导的急性肌炎、重度感染等疾病,LPS可刺激机体产生系列反心肌细胞损伤.但其中是否与调节心肌细胞内钙应并对心肌产生
7、直接损伤,抑制心肌收缩,最终可能离子浓度有关尚不明确。导致休克甚至多器官功能衰竭_I1。血红素氧合酶一11材料与方法(Hemeoxygenase,HO—1)是一种新型应激蛋白,以往1.1材料及试剂LPS、HO一1诱导剂氯化血红素acuteangle-closureglaucoma.Ophthamology,1999,106:669tioningfilteringblebs.OphthalnicSurgLasers,1997,28:657【3】ActonJ,SalmonJF,SchohzR.Extracapsularcataractextractio
8、n[8】GiandF,SchnyderCC,BoveyE,eta1.Combinedsurgeryforcataractw
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