简介:目的探讨T3期胃癌行胃癌根治术淋巴结清扫数目与预后的关系.方法回顾性分析2000年1月~2005年1月在我院接受胃癌根治术的426例T3期胃癌患者的临床资料,比较根治术不同淋巴结清扫数目组别问生存率的差异.结果426例患者中,无淋巴结转移者154例,其中清扫淋巴结数超出25枚的患者1、3、5年生存率分别为95.8%、87.6%和83.5%,清扫淋巴结数20~25枚者1、3、5年生存率分别为96.7%、86.5%和80.1%,清扫淋巴结数15~19枚者1、3、5年生存率分别为96.3%、83.2%和69.3%;有淋巴结转移者272例,其中清扫淋巴结数目超过25枚的患者1、3、5年生存率分别为87.1%、67.1%和54.7%,清扫淋巴结数20~25枚者1、3、5年生存率分别为85.6%、63.5%和50.2%,清扫淋巴结数15~19枚者1、3、5年生存率分别为86.5%、61.2%和38.4%.清扫淋巴结数20~25枚组与25枚以上组相比,无论有无淋巴结转移,生存率差异均无统计学意义(P>0.05),而与清扫淋巴结数15-19枚组比较,无沦有无淋巴结转移,5年生存率差异均有统计学意义(P<0.05).结论T3期胃癌行胃癌根治术淋巴结清扫数目应达20枚以上.
简介:Forelectronicmicroscopicobservation,wefoundSSV-transformedNIH3T3cellsweredifferentfromnon-transformedcells.InSSV-transformedNIH3T3cellsnucleicytoplasmaratiowasincreasedandincytoplasmatheribosomes(polyribosomeswereattachedtotheswollenroughendoplasmicreticulum.Itwaslikelythatribosomeswerelinedtogetherfunctionallyandstructionallytoproducespecificprotein(PDGF-likeprotein).
简介:Objective:ToexploretheeffectsofnuclearM-CSFontheprocessoftumorigenesis.Methods:FunctionalpartofM-CSFcDNAwasinsertedintoaneukaryoticexpressionplasmidpCMV/myc/nuc,whichcanaddthreeNLStotheC-terminaloftheexpressedproteinanddirecttheproteinintothecellnuclei.TheconstructedplasmidwastransferredintoNIH3T3cellsandthecellcloneswereselectedbyG-418selection.CellclonesstableexpressingtargetproteinwereidentifiedbyRT-PCR,ABCimmunohistochemistryassayandWesternblot.Cellgrowthkineticsanalysesthroughgrowthcurves,celldoublingtime,MTTtestandanti-senseoligodeoxynucleotide(ASODN)inhibitingcellgrowthtestwereperformedtoidentifycellsproliferationpotential.Results:Thetransfectedcellsshowedelevatedproliferationpotentialoverthecontrolcells.Conclusion:AbnormalappearanceofM-CSFinnucleuscouldenhancecellproliferation,whichsuggeststhatcytokineisoformswithincellnucleusmightplaytranscriptionfactor-likerole.
简介:TheeffectofTPA,apotenttumorpromoter,onSSV-NIH3T3cellsinserum-freemediumwasinvestigated.TPAstimulatedDNAsynthesisofSSV-NIH3T3cellsonthethirddayofcultureinSFM.InSDS-PAGFofmediumconditionedbyTPA-treatedSSV-NIH3T3cells(inSFM+TPA),theamountsoffourproteinsof31.0Kd,28.5Kd,25.5Kdand13.5Kdstrikinglyincreasedoverthatofnon-TPA-treatedcounterpart(inSFM).ThePDGF-likeactivitywasalsodetectedinCMofSFM+TPA.WheninsulinandEGFweredrownofftheSFM+TPA(SFM-Ins-EGF+TPA),TPAlostitsabilitytostimulateDNAsynthesisofSSV-NIH3T3cellsonthethirddayandSDS-PAGEoftheconditionedmediumshowedthattheamountsofthefourproteinsnotedabovegratelyreduced.However,cellsinSFM-Ins-EGF+TPAwereinalmostthesamegrowthconditionascellsincompleteSFM+TPAonthethirddayofculture.Resultswerediscussedinthepaper.
简介:目的探讨皮肤鳞状细胞癌(CSCC)中Livin蛋白的表达与CD3+T细胞浸润的情况,分析两者在CSCC发生、发展中的作用。方法采用免疫组织化学SP法检测40例CSCC组织中Livin蛋白表达及CD3+T细胞浸润情况,并以10例正常皮肤组织作对照,分析二者与CSCC临床病理特征的关系及其相关性。结果CSCC组织中Livin蛋白的阳性表达率为70.0%(28/40),正常皮肤组织中Livin无表达。10例正常皮肤组织中CD3+T细胞数量较少,为8.70±2.25,40例CSCC中为21.87±5.21,差异有统计学意义(P=0.000)。Livin蛋白表达和CD3+T细胞的数量均与CSCC的病理分级和淋巴结转移有关(P〈0.05),但二者之间无相关性(r=0.015,P=0.926)。结论Livin蛋白可以作为判断CSCC恶性程度、评价预后的指标。CD3+T细胞亦可反映机体抗肿瘤特异性细胞免疫状态和生物学行为,并作为判断预后的重要指标。
简介:Theacquisitionofsecondarychromosomalaberrationsinchronicmyeloidleukemia(CML)patientswithPhiladelphiachromosome-positive(Ph+)karyotypesignifiesclonalevolutionassociatedwiththeprogressionofthediseasetoitsacceleratedorblasticphase.Therefore,theseaberrationshaveclinicalandbiologicalsignificance.T(3;12)(q26;p13),whichisarecurrentchromosomalaberrationobservedinmyeloidmalignancies,istypicallyassociatedwithdysplasiaofmegakaryocytes,multilineageinvolvement,shortdurationofanyblasticphase,andextremelypoorprognosis.Wehaveidentifiedarecurrentreciprocaltranslocationbetweenchromosomes3and12withdifferentbreakpointatbands3q21inthemalignantcellsfroma28-year-oldman.ThepatientwasinitiallydiagnosedashavingPh+CMLinthechronicphase.Thet(3;12)(q21;p13)translocationoccurred4yearsafterthepatientwasfirstdiagnosedwithCMLwhileundergoingtyrosinekinaseinhibitortherapy.Weconfirmedthet(3;12)(q21;p13)translocationviafluorescenceinsituhybridizationassaybyusingwhole-chromosomepaintprobesforchromosomes3and12.Ourfindingsdemonstratethat,similartootherrecurrenttranslocationsinvolving3q26suchast(3;3)andt(3;21),thet(3;12)(q21;p13)translocationisimplicatednotonlyinmyelodysplasticsyndromeandacutemyeloidleukemiabutalsointheprogressionofCML.Thesefindingsextendthediseasespectrumofthiscytogeneticaberration.
简介:Objective:Toinvestigatetheeffectofbreast-conservationtherapyinearlystagebreastcancer.Methods:Atotalof234earlystagebreastcarcinomapatientsreceivedbreastconservingtreatmentinourhospital.Aftertheoperation,theyunderwentadjuvantchemotherapyandradiotherapy.Allofthesepatientsdesiredtopreservetheirbreasts.Results:Aftermedianfollow-upof29.46months(rangefrom3to100months),3caseshadlocalrelapseand8caseshaddistantmetastasis.Theoverallsurvivalrateof5yearwas96.7%,andthediseasefreesurvivalrateof5yearwas87.85%.Conclusion:Forearlystagebreastcarcinomapatients,classicquadrantectomy,axillarydissectionandpost-operativeadjuvantchemotherapyandradiotherapyleadtoexcellentlocalcontrolandgoodsurvival.
简介:MicroRNAs(miRNAs)aresmall,non-codingsingle-strandedRNAsthatcanmodulatetargetgeneexpressionatposttranscriptionallevelandparticipateincellproliferation,differentiation,andapoptosis.Tcellshaveimportantfunctionsinacquiredimmuneresponse;miRNAsregulatethisimmuneresponsebytargetingthemRNAsofgenesinvolvedinTcelldevelopment,proliferation,differentiation,andfunction.Forinstance,miR-181familymembersfunctioninprogressionbytargetingBcl2andCD69,amongothers.MiR-17tomiR-92clustersfunctionbybindingtoCREB1,PTEN,andBim.ConsideringthatthesuppressionofTcell-mediatedimmuneresponsesagainsttumorcellsisinvolvedincancerprogression,weshouldinvestigatethemechanismbywhichmiRNAregulatesTcellstodevelopnewapproachesforcancertreatment.
简介:目的:本研究应用流式细胞术检测恶性黑色素瘤患者外周血CD8~+T细胞中T细胞免疫球蛋白及黏蛋白-3(Tim-3)的表达情况,探讨Tim-3在恶性黑色素瘤进展中的作用。方法:应用流式细胞仪检测42例恶性黑色素瘤患者及38例健康体检者外周血CD8~+T细胞上Tim-3的表达,同时分析其与恶性黑色素瘤患者临床病理特征的关系。结果:Tim-3在恶性黑色素瘤患者及健康体检者外周血CD8+T细胞中均有不同程度的表达,恶性黑色素瘤组Tim-3表达量为(15.89±6.49)%,健康对照组的表达量为(3.27±2.16)%,差异具有统计学意义(P〈0.01)。Tim-3在CD8~+T细胞中的表达水平与恶性黑色素瘤患者有无溃疡、淋巴结转移、临床分期、远处转移有关(P〈0.01),而与性别、年龄、Breslow分度无关(P〉0.05)。结论:Tim-3在恶性黑色素瘤患者外周血CD8~+T细胞上高水平表达,其表达水平与临床分期呈正相关,并有望成为恶性黑色素瘤早期预测及治疗的重要靶标。
简介:Prostatecancergene3(PCA3,alsoknownasDD3)isanewbiomarkerthatcouldimprovetheaccuracyofprostatecancerdiagnosis.Itisagreatbiomarkerwithfairlyhighspecificityandsensitivity.Theincidenceofprostatecancerisrisingsteadilyinmostcountries.Thecommonlyusedprostate-specificantigen(PSA)testoncegavepeoplehopeforearlydiagnosisofprostatecancer.However,thelowspecificityofthePSAtesthasresultedinalargenumberofunnecessarybiopsiesandovertreatment.Duringthepastdecade,manynewprostatecancerbiomarkershavebeenfound.Amongthese,PCA3isthemostpromising.Duetoitsgreatperformanceindistinguishingprostatecancerfromotherprostateconditions,PCA3couldlikelybeappliedforearlydiagnosisofprostatecancer,patientfollow-up,prognosisprediction,andtargetedtherapy.Afteryearsofresearch,wehaveobtainedsomeknowledgeaboutthesequenceofPCA3gene.WehavealsodeterminedtherelationshipbetweenPCA3andtheproliferationofprostatecancercellsandlearnedsomeinformationabouthowPCA3affectstumor-relatedgenesandproteins.APCA3scorehasbeencreated,andithasbeenusedinavarietyofstudies.SomeresearchershaveevenappliedPCA3totargetedtherapyandobtainedagoodeffectinvitro.Thisreviewdescribesthecurrentstateofresearch,andexploresthefutureprospectsforPCA3.更多还原
简介:目的:探讨14—3—3β基因(酪氨酸3-加单氧矽色氨酸5-加单氧酶激活蛋白基因)对卡波氏肉瘤(Kaposigsarcoma,KS)细胞迁移的影响。方法:采用脂质体法将14—3—3β基因稳定转染入BCBL—1(HHV-8positiveandEBVnegativehumanBcells)细胞,Western—Blot检测14—3—3β蛋白的表达,最后利用Transwell法分析14—3—3β基因对BCBL-1细胞迁移的影响(设立空载体组和阴性对照组)。结果:pcDNA3.1/myc—His(-)A-14—3—3β组细胞迁移数目明显高于pcDNA3.1/myc—His(-)A组和阴性对照组,差异具有统计学意义(P〈0.05);pcDNA3.1/myc—His(-)A组和阴性对照组细胞迁移数目相比差异无统计学意义(P〉0.05)。结论:14—3—3β基因能促进KS细胞的迁移。
简介:目的:比较592例鼻咽癌患者的CT、MRI资料,探讨MRI及CT对鼻咽癌92福州分期和02UICC/AJCC分期的不同影响。方法:分析592例治疗前进行CT/MRI检查并经病理证实为鼻咽癌的患者。比较MRI和CT检查的差异性所导致分期不同。结果:MRI分期结果较CT晚,92福州分期CT中T1+T2比例达59.4%,MRI中为39.9%(P=0.000);02UICC/AJCC分期中T1+T2比例达61.0%,MRI中为46.6%(P=0.001)。两种分期相比,92分期T4期比例为32.4%,02UICC/AJCC分期T4期比例为22.0%(P=0.001)。结论:较CT对鼻咽癌T分期的诊断具有优越性,92分期和02UICC/AJCC分期在T分期上差异不大。
简介:目的人胃癌组织中caspase-3表达的研究。探讨caspase-3表达-9胃癌预后的关系。方法应用免疫组织化学ABC法检测人胃癌组织中caspase-3的表达情况。结果周围正常胃粘膜上皮caspase-3阳性率为94/99(94.9%),胃癌组织中caspase-3的阳性率为62/99(63.5%),较周围正常胃粘膜上皮明显降低(P〈0.05)。caspase-3的表达与胃癌的预后指标(如组织学类型,TNM分期等)明显相关性。结论人胃癌组织中caspase-3的表达较低。这一结果提示caspase-3低表达导致的细胞凋亡异常降低及增生过度可能是胃癌的发病原因之一。这一结果亦提示caspase-3与胃正常粘膜及肿瘤细胞的凋亡有关。Caspase-3可能是胃癌的预后指标之一。