简介：Someantitumoractivitiesofcomponent(E),extractedfromtherootofFagopynumCymosum(Trev)Meisn(FCTM),haverecentlybeendiscoveredinvivoandinvitro.ThecomponentE(CE)’spatternofactionwithtumorcellularDNAatthemolecularpharmacologicallevelwasinvestigatedbymacromolecularsynthesisexperiment(MSE)andhumanDNAinteractionsystemestablishedinourlaboratory.Theexperimentsdemonstratedthat,invitro,theagentcouldmarkedlyinhibittheincorporationof3H-TdRintothecellularDNA,andtheIC50inP388leukemiacellandinSGC-7901cellwas17.86μg/mland110.4μg/ml,respectively.Theagent,atmg/mllevel,couldproduceanintercalationreversionpatternwithDNAwithinashorttime(2hours).Butwhentheintervalwasprolongedforover4hours,theactionchangedtointercalationirreversiblepattern.Accordingtotheseobservations,theauthorsinferthatCEinteractswithDNAintwoways-directlyandindirectly.Theindirectaction,especiallyinlowconcentr

简介：目的研究E-cad在食管鳞状细胞癌中的表达及意义。方法免疫组化SABC法检测76例食管癌E-cad的表达。结果正常食管粘膜细胞膜E-cad表达呈阳性。在癌组织中，E-cad细胞膜表达减弱。E-cad减弱表达率为65．8％(50／76)，E-cad表达与病理分化程度(P=0．02)、漫润深度(P=0．024)、静脉侵犯(P=0．04)、淋巴结转移(P=0．022)和临床分期(P=0．04)具有相关性；而与年龄、性别、病理类型无关(P>0．05)。在无淋巴结转移组E-cad表达降低占56．25％(27／48)，有淋巴结转移组占82．14％(23／28)，两者之间表达差异有显著性；有静脉侵犯组E-cad表达降低率为92．86％(13／14)和无静脉侵犯组为59．68％(37／62)，两者之间差异有显著性。结论E-cad减弱表达与食管癌生物学行为有关，可能为食管癌预后差的因素之一。

简介：研究人员最新在报告近68000人参加的大剂量维生素E对预防心血管病和癌症的危险的结果.人们可能听说过,维生素E是纯天然的抗氧化剂,服用维生素E是预防癌症和心脏病的有效方法.人们对它寄予很大希望,但研究证明这是个不切实际的希望.

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简介：Objective:Tostudythevaccinepotencyofgene-modifiedtumorcells.Methods:TheEL-4lymphomawastransducedwithrecombinantretroviruscontainingthemurineGM-CSFgeneorB7-1gene.Theeffectofgenetransductiononantitumorimmunitywasinvestigated.Results:Flowcytometryanalysisshowedthatexpressionoftheirsurfacemarkerbetweenwild-typeEL-4cellsandgenetransducedtumorcellswasthesameexceptforCD80positiveinB7-1genetransducedcells.GM-CSFgeneorB7-1genetransducedEL-4cellsresultedinremarkablelossoftumorigenicityinsyngeneticmice.ThesystemicprotectiveimmunitywasinducedagainstthechallengewithEL-4/wtcells.TherapeuticvaccinewithEL-4/GM-CSForEL/7-1cellscouldretardthegrowthofestablishedearly-stageEL-4/wttumorsignificantly,butnotretardthegrowthoflate-stageEL-4/wttumor.IrradiatedGM-CSFgenetransducedEL-4cellsshowedstrongvaccineeffectagainstEL-4cellchallenge,butirradiatedB7-1genetransducedEL-4cellsshowedweakvaccineeffect.RemarkablecooperativeantitumoreffectagainstEL-4cellchallengewasobservedwhenbothirradiatedEL-4/GM-CSFandEL-4/B7-1wereinoculatedtogether.Conclusion:GM-CSFgeneorB7-1genetransducedcombinationofthetwokindsofvaccinemayhavepotentialapplicationvalueinhumancancertreatment.

简介：Objective:ToinvestigatetheexpressionofE2FandBcl-2andtheclinicopathologicalsignificanceinhepatocellularcarcinoma.Methods:TheexpressionsofE2F-3andBcl-2in74patientswithhepaticcarcinoma,paracarcinomaand15patientswithlivercirrhosisweredetectedbyS-Pimmunohistochemicalstaining.Results:TheexpressionofE2Finhepaticcarcinomawassignificantlyhigherthanthatinparacarcinomaorlivercirrhosis(P<0.005),theexpressionofBcl-2inhepaticcarcinomawassignificantlyhigherthanthatinparacarcinoma(P<0.005),inwhichBcl-2expressionwaslowerthaninlivercirrhosis(P<0.05).TheexpressionofE2F-3wasrelatedwithhistologicalgrade,tumorsize,andtheexpressionofBcl-2wasrelatedwithhistologicalgrade,tumorsizeandtumornumber.TherewascorrelationbetweentheexpressionofE2F-3andBcl-2inhepaticcarcinoma.Conclusion:E2F-3andBcl-2expressionmayplayanimportantroleindevelopment,progressionandcellapoptosisoftumor.

简介：目的:探讨E-钙粘蛋白(E-cadherin,E-cad)的表达与胃癌的浸润、转移及预后的关系.方法:应用SP免疫组化方法检测76例胃癌E-cad的表达.结果:正常胃粘膜上皮中E-cad全部表达.Ⅰ期E-cad的异常表达率为19.6%,而Ⅱ、Ⅲ、Ⅳ期的异常表达率分别是57.2%、62.1%和69.3%,Ⅰ期和Ⅱ、Ⅲ、Ⅳ期间有非常显著性差异(P＜0.01).伴有淋巴结转移者51例中异常表达为74.3%,而无淋巴结转移者40.2%,两者间有非常显著性差异(P＜0.05).在进展期胃癌中按肿瘤生长方式分组,结节型E-cad异常表达率41.2%,而溃疡浸润型异常表达率67.3%,两者间有显著性差异(P＜0.05);高中分化胃癌E-cad异常表达率32.0%,而低分化胃癌E-cad异常表达率69.6%,两者间有非常显著性差异(P＜0.01).癌细胞浸润深度达粘膜、粘膜下层和肌层者E-cad异常表达率为30.1%、38.2%,而浸润至浆膜及浆膜外者异常率为67.3%,两者间有非常显著性差异(P＜0.01).胃癌组织中E-cad的表达与癌组织分化、浸润和转移密切相关.结论:E-cad与肿瘤的发生、浸润、转移有关,可作为一种新的肿瘤标记物,对判断预后有一定价值.

简介：E—选择素(又称内皮细胞白细胞粘附分子—1),主要由激活的血管内皮细胞表达并释放入血。它不但在白细胞定居及炎症反应中起主要作用,而且在循环中的肿瘤细胞定向到达靶器官的血管内皮细胞及其与内皮细胞的粘附启动,决定器官的特异性转移方面起非常重要的作用。为探讨肺癌时E—选择素表达及其与肺癌浸润转移的关系,本文对肺癌患者血浆中可溶性E—选择素水平进行测定。现报告如下:

简介：Objective:TostudythesynergiceffectsofIL-12andB7-1transfectantonantitumorimmunityinvivo.Methods:TheretrovirusvectorencodingmIL-12andmB7-1genewastranfectedintoEL-4thymiclymphomacellsrespectively.Thecellswereusedastumorvaccineandthetherapeuticeffectwasobserved.Results:IncontrasttothemiceimmunizedwithEL-4/WtorEL-4/Neogroups,thetumorigenicityofEL-4/IL-12transfectantwasdecreased(P<0.001).TheEL-4/IL-12andEL-4/B7-1cellsirradiatedwith60CoshowedsignificantsystematicprotectiveeffectsagainsttherechallengeofEL-4/Wt.60CoirradiatedEL-4/IL-12cellsdelayedtheoccurrenceoftumorandprolongedthesurvivalperiodoftumorbearingmice.CombinationofthevaccinesofEL-4/IL-12andEL-4/B7-1resultedintheenhancedtherapeuticeffectcomparedwitheachsingletransfectantgroup(P<0.001).Conclusion:TheresultsshowedthatIL-12transducedcellscouldenhancetheantitumorimmunityofhostascancervaccine.CombinationoftheEL-4/IL-12andEL-4/B7-1transfectantcouldimproveimmunityofhostandisaprospectcancervaccine.

简介：目的:探讨转化生长因子β1(transforminggrowthfactorβ1,TGFβ1)及层粘连蛋白(laminin,LN)反义RNA对大肠癌细胞E-钙粘着蛋白表达的影响.方法:采用免疫印迹技术检测大肠癌细胞E-钙粘着蛋白的表达水平,采用增强的化学发光技术显示结果.结果:TGFβ1可促进E-钙粘着蛋白表达;LN反义RNA既可抑制E-钙粘着蛋白表达,又能抑制TGFβ1对该蛋白的调节.结论:TGFβ1对肿瘤细胞恶性行为的影响可能与E-钙粘着蛋白表达增加有关.

简介：1病案摘要患者,男,39岁.因左鼻塞1年伴双颈肿块1月入院.该患者于1年前无诱因下出现左侧鼻塞,未经处理.1月前双颈出现无痛性肿块而来我院就诊.

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简介：DuckhepatitisBvims(DHBV)DNAwasdetectedindifferenttumorousnodulesofduckswithhepaticmulticentriccancerorintrahepaticmetastasisbySouthernblottechnique.Among7duckswithhepatocellularcarcinomaofmultipletumornodules,thehybridizationpatternofIntegratedDHBVDNAIndifferenttumorousnoduleswasidenticalin3casesanddifferentin2cases.OnecaseshowedasimilarhybridizationpatternintwotumorousnodulesandotheronewasnegativetorDHBVDNA.IntegratedDHBVDNAwasalsoidentifiedinametastaticlungcancerofduckswithhepatocellularcarcinoma.Thehybridizationpatternofmetastasisoflungswasasthesomeasthatinprimaryhepatocellularcarcinoma.ThesamediscretehybridizationbandsInthedifferenttumorousnodulesindicatethatthesenodulesmightarisefromonetransformedcell.ThedifferenthybridizationpatternsInvarioustumorousnodulesshowthatthesetumorousnodulesmightarisefromvarioustransformedcells.Theresultssuggestthatthehyb

简介：目的：探讨血清CEA和CAl9-9联合检测对胃癌根治术后复发及(或)转移诊断的实用价值。方法：57例胃癌患者，在根治术后a1～5规定的时间内分别做血CEA及CAl9-9、胃镜、腹部B超、胸片等相关检查；血清CEA及(或)CAl9-9阳性者即做胃镜及(或)肠镜、腹部B超、胸片等相关检查或胃镜及腹部B超等检查提示复发或转移者、有腹部不适、大便性状改变、食欲下降、体重减轻等症状即做血清CEA及CAl9-9检查。血清CEA、CAl9-9检测采用美国雅培快速酶免发光分析仪。结果：有34例被证明有复发及转移，其中CEA阳性率38．2％，CA19-9阳性率52．9％，CEA及CAl9-9合并阳性率为73．5％，单项检测阳性率与联合检测的阳性率比较有统计学意义(P<0．01)。结论：血清CEA和CAl9-9联合检测可将单项检测的阳性率从50％左右提高到73．5％，联合检测与单项检测比较，有统计学意义。因此血清CEA及CAl9-9联合检测对胃癌术后监控、及时治疗可起重要作用，有一定的实用价值。

简介：Inourreport,thevaluesofwholebloodserotonin(5-HT)in87apudomapatients(diagnosedbyoperationandpathology)weresummarized.Amongthem,thelevelsofurinary5-hydroxyindole-3-aceticacid(5-HIAA)of44patientswerealsotested.Theresultsshowedthatbothparametresofapudomapatientswerehigherthanthoseofnon-apudoma,post-operativepatientsofapudomaaswellasthenormal.Theincreasingextentofthelevelsofwholeblood5-HTandurinary5-HIAAinsmallintestinalcarcihoidwasthemostobviousonebutthatofrectumwasnot.Thereferablediagnosticvaluessuggestedwere:5-HT>130ngml,5-HIAA>30mg/24hours.

简介：Objective:Toinvestigatephospho-(-cateninexpressioninnon-smallcelllungcancer(NSCLC)andtostudytherelationshipbetweenphospho-(-cateninexpressionandsomeclinicalpathologicalfactors.Methods:Theexpressionofphospho-(-cateninin67primaryNSCLCcasesdetectedimmunohistochemically.Results:phospho-(-cateninwasnotexpressedinnormalbronchialmucouscellandshowedcytoplasmicandnuclearexpressioninNSCLCcell.Totalpositiveexpressionratereached62.7%,andpositiveexpressionrateofnucleuswas38.8%.Thepositiveexpressionrate(87.5%)andnuclearexpressionrateofadenocarcinoma(62.5%)wereapparentlyhigherthanthoseofsquamouscellcancer(40.0%and17.1%)(P<0.01).Expressionofphospho-(-cateninhadnorelationshiptodifferentiationdegreeandlymphaticmetastasis.Thepostoperativesurvivaltimeisnotrelatedtophospho-(-cateninexpression.(Log-ranktest,P=0.9198;P=0.6274).COXmodelanalysisshowedthattumorstageanddifferentiationareindependentriskfactorstoprognosis(P=0.001;P=0.020).Conclusion:NSCLCcellsshowpositiveexpressionofphospho-(-catenin,phospho-(-cateninnuclearexpressionisrelevanttohistologicaltypes.Thereisnodifferenceinpostoperativesurvivaltimebetweenpatientswithphospho-(-cateninpositiveexpressionandpatientswithnegativeexpression,expressionofphospho-(-cateninisnotindependentriskfactortoprognosis.

简介：例1．54岁，孕6产5。因绝经3年，阴道不规则流血1月于1982年11月7日入院。2年前曾有“宫颈炎”病史，行冰冻治疗后好转。妇科检查：外阴阴道正常，宫颈上唇糜烂，子宫正常大小，右附件区阴性，左侧骶韧带增厚。肛诊：直肠粘膜光滑。取宫颈上唇组织活检，病理诊断为宫颈鳞状细胞癌。入院诊斯：宫颈鳞状细胞癌Ⅱa期。于同年11月18日在硬膜外麻醉下行子宫颈癌根治术。

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简介：恶性淋巴瘤主要发生在淋巴结,累及乳腺极少见,而乳腺原发恶性淋巴瘤更罕见,1967年Lattes统计共173例,占乳腺恶性肿瘤的0.04%～0.5%和所有乳腺肉瘤的10%[1],国内亦有零星报告.本文收集我院自1980年至1999年乳腺肿块经手术切除,病理确诊为恶性淋巴瘤者5例,现报告并行复习文献如下: