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《当归红芪超滤物抗辐射致心肌细胞损伤的作用及机制-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、世界中西医结合杂志2014年第9卷第5期WorldJournalofIntegratedTraditionalandWesternMedicine2014.Vo1.9,No,5·487-·实验研究·当归红芪超滤物抗辐射致心肌细胞损伤的作用及机制畅艳娜李应东王雪梅马莉刘凯【摘要】目的探讨当归红芪超滤物抗辐射致乳鼠心肌细胞损伤的作用及其可能机制。方法用x线照射Wistar乳鼠原代培养的心肌细胞建立辐射损伤模型,用不同浓度的当归红芪超滤物进行干预,实验分正常对照组、辐射损伤模型组、当归红芪超滤物不同浓度(3、6、9mg·mL)干预组(UFE—AH)。MTF法检测各组
2、心肌细胞的存活率,2,4二硝基苯肼显色法检测各组细胞培养上清液中乳酸脱氢酶(LDH)的含量,黄嘌呤氧化酶法测定各组细胞内超氧化物歧化酶(SOD)的活性,免疫组化法观测各组细胞Bax的表达,蛋白印迹半定量测定各组细胞Bax蛋白的表达。结果与辐射损伤模型组比较,当归红芪超滤物各干预组心肌细胞存活率明显升高,LDH含量显著降低(P<0.05),SOD活性显著提高(P<0.05),Bax表达显著降低(P<0.05)。结论当归红芪超滤物具有拮抗辐射致心肌细胞损伤的作用,其机制与清除自由基有关。【关键词】当归红芪超滤物;放射损伤;心肌细胞;Bax蛋白【中图分类号】R285
3、.5;R542.2【文献标识码】A【文章编号】1673—6613(2014)05~0487—05EfiectandMechanismOilMyocardialCellularDamageInducedbyRadia-tionTreatedwithUltra—FiltrationExtractfromAngelicaSinensisandHedysarumPolybotrysMixtureCHANGYan—na,LIYing—dong,WANGXne—mei,MALi,LIUKai(GansuCollegeofTraditionalChineseMedicine
4、,LanzhouGansu730000)【Abstract】ObjectiveToexploretheeffectandpotentialmechanismonmyocardialcellulardamageinducedbyradiationinsucklingmicetreatedwithultra—infiltrationextractfromAngelicaSinensisandHedysarumPolybotrysmixture.MethodsX—rayirradiationwasusedontheprimitivelyculturedmyocard
5、ialcellsofWistarsucklingmicetosetupradiationdamagemodels.Theuhra—infiltrationextractfromAngelicaSinensisandHedysarumPolybotrysmixturewasusedforinterventionatdifferentconcentrations.Intheexper—iment,anormalcontrolgroup,aradiationdamagemodelgroup,andtheinterventiongroupsofdifferentcon
6、—centrations(3,6.9mg·mL—oftheultra—infiltrationextractfromAngelicaSinensisandHedysarumPoly—botrysmixture)weredivided.MTTmethodwasusedtodetectthesurvivalrateofmyocardialcellsineachgroup.The2,4dinitro—phenvlhvdrazinecolorimetricreactionwasusedtodetectLDHcontentinthecuhuresupernatant.T
7、hexanthinoxidaseenzymemethodwasusedtodetectSODactivity.IHCmethodwasusedtodetectBaxexpressionandWesternblottingwastodetectBaxproteinexpressionineachgroup.ResultsComparedwiththeradiationdamagemodelgroup,thesurvivalrateofmyocardialcellwasincreasedapparent-lyineachinterventiongroup,LDHc
8、ontentwasreducedsig
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