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时间:2018-11-22
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1、反流致大鼠Barrett论文张涛朱以芳张峰王云杰程庆书李小飞【关键词】BarrExpressionandsignificanceofinduciblenitricoxidesynthaseinformationofBarrettsesophagusanditsprogressiontoesophagealadenocarcinomainaratmodel【Abstract】AIM:Toinvestigatetheexpressionandsignificanceofinduciblenitricoxidesynthase(iNOS)intheformationofBarrett
2、sesophagus(BE)anditsprogressiontoesophagealadenocarcinoma(EAC)inaratmodel.METHODS:SixtyfiveeightaleSpragueDay,folloyapproximately05cmdistaltothegastrojejunostomatoproducetheduodenogastroesophagealrefluxmodelgroup.Another10ratsundergoingashamoperativeprocedureeanimalsplesthemodelgroupatthecon
3、trolgroupatadeandusedforhematoxylinandeosinstainingandiNOSimmunohistochemicalstaining.PathologicalchangesandexpressionofiNOSinthedistalohirdoftheesophagealmucosaicroscopically.RESULTS:①Nopathologicalchangesodelgroupaftersurgery.Theremationfrommildtosevereinthedistalohirdoftheesophagus,andBEa
4、ndEACe:375%and0%atmunohistochemicalstainingofiNOSodelgrouppositiveexpressionofiNOSinthedistalohirdoftheesophagusalmacrophagesdirectlybeneaththeepithelium.CONCLUSION:ExcessivenitricoxideproducedbyiNOSinthestromalmacrophagesmaycontributetothepathogenesisofBEanditsprogressiontoEAC.【Keys;adenoca
5、rcinoma;nitricoxidesynthase;nitricoxide【摘要】目的:探讨反流致大鼠Barretts食管(Barrettsesophagus,BE)及食管腺癌(esophagealadenocarcinoma,EAC)发生过程中局部诱导型一氧化氮合酶(iNOS)的表达及意义.方法:将8L/LH2O2处理后,以正常山羊血清封闭,加入一抗1∶100iNOS抗体4℃过夜,二抗为1∶100生物素化山羊抗兔,三抗为1∶100ABC复合物孵育30min,PBS冲洗,DAB显色,苏木素衬染细胞核,常规脱水、透明、封片.光镜下胞质呈棕色颗粒状着色为阳性,对阳性细胞进行观察
6、和计数.统计学处理:采用SPSS100统计软件,方差分析用于分析组间均数差别,方差不齐时采用非参数秩和检验,Fishers精确检验用于比较两个率的差别,P005表示两组差别具有显著性的意义.2结果对照组全部存活;模型组死亡12只,死亡率为185%.21组织学观察对照组未见病变.模型组术后引发反流性食管炎,食管下段黏膜炎症和增生的程度随观察时间的延长逐渐加重(Tab1),并有部分发展为BE和起源于BE的EAC(Fig1).BE,EAC最早分别出现于术后第8周和第12周,在以后的各时间点两者发生率呈上升趋势,到术后20eniJFJr.Changingpatternsintheinc
7、idenceofesophagealandgastriccarcinomaintheUnitedStates[J].Cancer,1998;83(10):2049-2053.[2]PeraM.Epidemiologyofesophagealcancer,especiallyadenocarcinomaoftheesophagusandesophagogastricjunction[J].RecentResultsCancerRes,2000;155:1-14.[3]NavaratnamRM,
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