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:目的比较外侧中和钢板和后外侧解剖钢板治疗骨质疏松性外踝骨折的疗效。方法本组共44例,其中男25例,女19例;按照治疗方法分为外侧中和钢板组(24例),其中男13例,女11例,平均年龄(69.6±15.8)岁(60~84岁),术前腰椎骨密度(0.889±0.104)g/cm^2,股骨颈骨密度(0.675±0.092)g/cm^2;后外侧解剖钢板组(20例),其中男12例,女8例,平均年龄(67.9±13.2)岁(60~78岁),术前腰椎骨密度(0.925±0.093)g/cm^2,股骨颈骨密度(0.568±0.062)g/cm^2;平均术前住院时间分别为4.8天和4.5天。致伤原因:平地摔伤24例,自行车摔伤4例,楼梯扭伤16例;根据影像学旋后外旋型损伤分度:Ⅱ度(单纯的外踝骨折)7例,Ⅲ度(外踝和胫骨远端后外侧骨折)4例,Ⅳ度(外踝、胫骨远端后外侧及内踝骨折)33例。术后采用美国足踝外科协会后足踝评分系统(Americanorthopedicfootanklesociety,AOFAS)对两组的疗效和并发症进行评价。结果44例获平均17(12~25)个月随访,两组的性别比例、年龄、合并症、旋后外旋型骨折分度、术前住院时间和股骨颈骨密度相比,差异无统计学意义(P>0.05)。两组平均手术时间和术中出血量对比差异无统计学意义(P=0.29,0.26)。术后12个月随访AOFAS评分:外侧中和钢板和抗滑钢板组分别为平均(93.7±6.1)分和(94.5±6.0)分,两组比较差异无统计学意义(P=0.38)。切口相关并发症:外侧中和钢板组9例并发切口感染和内固定激惹等,后外侧抗滑钢板固定组并发内固定激惹和腓骨肌腱病各1例,两组相比差异有统计学意义(P=0.04)。结论两种方法治疗骨质疏松性旋后外旋型外踝骨折均安全有效,但后外侧解剖钢板可以减少切口局部并发症的发生。
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:目的回顾分析尺骨远端锁定加压钩钢板(lockingcompressionplatedistalulnahookplate,LCPDUHP)治疗第5跖骨基底部骨折的临床疗效。方法2010年3月至2012年3月,我院采用LCP-DUHP治疗第5跖骨基底部骨折的患者共29例,获完整随访资料者23例,男12例,女11例;年龄20~75岁,平均47岁。损伤骨机制:平地跌伤13例,电瓶车伤5例、交通事故伤3例、高处跌伤2例。所有患者均表现为足外侧肿胀、疼痛、活动受限,无开放性骨折。按照Lawrence-Botte分区:I区者18例,II区5例。从外伤到手术时间为1~5天,平均2天。术后定期随访评估骨折愈合时间、功能恢复、及并发症发生率(如:感染、骨折延迟愈合、骨不连、再折及创伤性关节炎)。功能恢复情况采用美国骨科足踝协会(Americanorthopaedicfootandanklesociety,AOFAS)中足评分标准评定。结果23例随访11~22个月,平均14个月;所有患者切口均一期愈合;术后部分负重时间3~6周,平均4周;完全负重时间5~16周,平均7周。术后恢复以前生活状态时间8~18周,平均11周。末次随访时,AOFAS中足评分为72~100分,平均94分;其中优19例、良3例、可1例,优良率95.7%。术后即刻X线片显示,骨折均获得满意复位;骨折愈合时间4~16周,平均7.6周,无骨不连及畸形愈合;1例(4.3%)出现延迟愈合,经石膏制动4周后,骨折愈合;末次随访时,3例(13.0%)出现轻度跖骰关节退变。结论LCP-DUHP治疗第5跖骨基底部骨折可获得满意的临床疗效和影像学结果。
简介:目的检测γδT细胞信号转导分子ζ链相关蛋白-70(ζ-chainassociatedprotein70,ZAP.70)。方法分离获取健康人PBMC,用结核杆菌低分子多肽抗原(Mtb.Ag)刺激PBMC,通过流式细胞仪检测总T细胞和丫6T细胞CD69分子的动态表达;Mtb-Ag活化俩T细胞增殖培养,10d后收集细胞,用免疫磁珠阳性分选法分离获取高纯度的γδT细胞;westernblot方法检测γδT细胞内的ZAP.70分子。结果总T细胞和γδT细胞均在活化刺激24h时表达CD69分子达高峰,但总T细胞仅为16%,γδT细胞可达75.2%;新鲜分离的PBMC中γδT细胞的比例仅为4.9%,Mtb-Ag刺激培养10d后升为69.2%,免疫磁珠阳性分选后达99-3%;检测到Y6T细胞内的ZAP-70分子。结论Mtb-Ag可特异性激活俩T细胞,用Mtb-Ag刺激γδT细胞活化增殖培养,可获得大量的γδT细胞;成功地检测到细胞内ZAP-70分子,这为Y6T细胞内其它分子的检测分析奠定方法学基础,也为进一步检测γδT细胞活化信号转导过程中ZAP-70分子的激活及作用奠定基础。
简介:Forelectronicmicroscopicobservation,wefoundSSV-transformedNIH3T3cellsweredifferentfromnon-transformedcells.InSSV-transformedNIH3T3cellsnucleicytoplasmaratiowasincreasedandincytoplasmatheribosomes(polyribosomeswereattachedtotheswollenroughendoplasmicreticulum.Itwaslikelythatribosomeswerelinedtogetherfunctionallyandstructionallytoproducespecificprotein(PDGF-likeprotein).
简介:目的分析乳腺癌3.0TMRI动态增强及扩散加权成像(DWI)的表现特征。方法回顾性分析经病理检查证实的36例乳腺癌的3.0TMRI影像资料,分析其表现。结果乳腺癌MRI表现:平扫T1WI病灶呈等或稍低信号;T2WI呈等或稍高信号;肿块形状不规则,部分呈深浅不同程度分叶状,边界模糊,并见毛刺征。DWI像:所有病灶均呈高信号,ADC图呈低信号ADC值为(0.97±0.22)×10-3mm2/s。动态增强示:不均匀强化,多呈斑点状、条片状或团状,部分病灶周围血管影增多;时间-信号强度曲线:流出型(Ⅲ型)曲线29例(80.6%);平台型(Ⅱ型)型曲线5例(13.9%);流入型(Ⅰ型)曲线2例(5.5%)。36例中34例诊断为乳腺癌,2例误诊为纤维腺瘤,诊断符合率为94.4%。结论乳腺癌具有一定MRI表现特征,结合3.0TMRI动态增强及DWI检查对乳腺癌的诊断具有较高的应用价值。
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:Objective:ToconstructamutantpEGFP-hTERTexpressionvector,toobserveitssteadyexpressionintransfectedhumanbladdercarcinomacelllineT24anditsroleinmolecularregulatorymechanismsoftelomerase,andtoprovideanewtargetgeneforbladdercancer.Methods:PCRamplificationwasperformedbyusingprimersbasedontheknowngenesequenceofhTERT.PCRproductionwasclonedintoplasmidpGEMT-TeasyandthesequenceofmutanthTERTgenewasanalyzed.ArecombinantmutanthTERTvector(pEGFP-hTERT)wasconstructedattheEcoRIandSalIsitesofthepEGFP-C1vector.AftertransfectingthefusiongeneintobladdercarcinomacelllineT24bycalciumphosphate-DNAcoprecipitation,thesteadyexpressionofGFP-hTERTfusionproteinwastestedbyfluorescentlightmicroscopy.TheproliferationchangesofbladdercarcinomacelllineT24weredetectedbylightmicroscopyandsenescencecorrelatedβ-galactosidasestaining.Results:IdentificationofpEGFP-hTERTbyenzymedigestionshowedthatmutanthTERTfragmenthadbeenclonedintoEcoRIandSalIsitesofthepEGFP-C1vector.ThesteadyexpressionofGFP-hTERTfusionproteinwaslocalizedinthenucleusoftransfectedcells.Expressionofsenescence-associatedβ-galactosidaseintransfectedcellsgraduallyincreasedwithextendedculturedtimeandcellgrowthwassuppressed.Conclusion:Themutant-typehTERTgenesuppressestheproliferationofbladdercarcinomacelllineT24bycompetitiveeffectontelomeraseactivity.ThissuggeststhathTERTgenemightbeasuitablegenetargetforbladdercancertherapy.
简介:Objective:MemorystemTcells(Tscm)haveattractedattentionbecauseoftheirenhancedself-renewal,multipotentcapacity,andanti-tumorcapacities.However,littleisknownaboutTscminpatientswithrenalclearcellcarcinoma(RCC)andtheroleofWntsignalinginthesecells.WeevaluatedTscmfromRCCpatientsconcerningtheiractivationofWntsignalinginvitroandexploredthemechanismofpreferentialsurvival.Methods:FlowcytometryidentifiedsurfacemarkersandcytokinesproducedfromaccumulatedTscminthepresenceoftheglycogensynthasekinasebetainhibitorTWS119.Apoptosiswasevaluatedafterinductionusingtumornecrosisfactor-alpha.ImmunofluorescenceandWesternblotanalyseswereusedtoinvestigatetheactivationofthenuclearfactor-kappaB(NF-КB)pathway.Results:RCCpatientshadasimilarpercentageofCD4~+andCD8~+Tscmashealthydonors.ActivationofWntsignalingbyTWS119resultedintheaccumulationofTscminactivatedTcells,butreversalofdifferentiatedTcellstoTscmwasnotachieved.PreferentialsurvivalofTscmwasassociatedwithincreasedanti-apoptoticabilitymediateddownstreamoftheNF-КBactivationpathway.Conclusions:ThefindingthatTscmcanaccumulatebyWntsignalinginvitroinbloodfromRCCpatientswillhelpindevisingnewcancertherapystrategiesofTscm-basedadoptiveimmunotherapy,suchasdendriticcell-stimulatedTscm,andTcellreceptororchimericantigenreceptor-engineeredTscm.
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:目的探讨恶性淋巴瘤患者T淋巴细胞亚群的变化特点。方法采用流式细胞术检测24例各型恶性淋巴瘤患者及20例正常人的外周血中T淋巴细胞(CD3+细胞)、辅助性T细胞(CD4+)、抑制性细胞毒T细胞(CD3+/CD8+)、NK细胞(CD3-/CD16+56)和NKT细胞(CD3+/CD16+56),对两者百分比进行比较分析。结果患者组中辅助性T细胞(CD3+/CIM+/CD8-)的百分比和绝对值明显低于正常对照组(P〈0.01),而患者组中CIM/CD8细胞亦明显低于正常对照组(P〈0.01)。结论在恶性淋巴瘤发生发展的过程中了解淋巴细胞亚群的变化,可为后期病情判断及可能采取的相关治疗提供依据。