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Dynesys系统治疗单节段与多节段腰椎退变性疾病的临床疗效。方法回顾分析2008年7月至2011年3月采用Dynesys系统治疗的腰椎退变疾病患者46例。根据患者手术节段分为单节段组(32例)和多节段组(14例)。记录两组患者术前术后Oswestry功能障碍指数(oswestrydisabilityindex,ODI)和疼痛视觉模拟量表(visualanaloguescale,VAS)评分,摄腰椎正侧位和前屈后伸位片,测量手术节段椎间高度、活动度以及近端相邻节段的椎间活动度。结果46例患者平均随访30(24~52)个月,两组患者ODI指数术后3个月:单节段组(20.5±5.7)%,多节段组(21.2±9.8)%;末次随访:单节段组(12.2±4.3)%,多节段组(15.3±6.9)%,均较术前明显改善(P<0.05);VAS评分术后3个月:单节段组2.9±1.3,多节段组3.2±1.4;末次随访:单节段组1.4±0.3,多节段组1.6±0.4,均较术前明显改善(P<0.05)。末次随访时ODI与VAS评分两组间差异无统计学意义(P>0.05)。两组患者手术节段椎间高度术后3个月单节段组(11.3±2.7)mm,多节段组(11.1±2.0)mm;末次随访单节段组(10.8±3.1)mm,多节段组(10.3±2.2)mm,较术前均有所下降,但差异均无统计学意义(P>0.05)。手术节段的活动度在术后3个月单节段组(4.3±2.4)°,多节段组(4.6±2.7)°;末次随访单节段组(4.8±2.2)°,多节段组(5.3±2.0)°均显著下降(P<0.05)。两组近端相邻节段活动度在术后3个月时单节段组(9.1±2.1)°,多节段组(8.5±1.8)°有所增加,但差异无统计学意义(P>0.05),仅在末次随访时单节段组(10.3±2.7)°较术前显著增加,并且单节段组大于多节段组(9.1±3.0)°(P<0.05)。结论单节段与多节段Dynesys内固定治疗腰椎退变性疾病均能获得满意的短期临床疗效,并保留部分椎间活动度�
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:目的总结15例第Ⅷ肝段切除术的临床经验.方法使用彭氏多功能手术解剖器(PMOD),采取选择性肝血流阻断,对15例第Ⅷ段肝癌进行肝段或联合肝段切除.结果15例手术均顺利完成,无一例手术死亡.其中13例行第Ⅷ肝段切除,2例行联合第Ⅶ、第Ⅷ肝段切除.术中肝血流阻断1-2次,时间12~25min,平均(17.3±5.2)min,切肝时间(阻断肝血流至肝脏肿块切除时间)10-23min,平均(18.3±4.7)min.出血量约(50-700)ml,平均(186±78)ml,2例患者需输血.术后有2例合并胸腔积液,1例胆漏并发膈下感染.结论使用PMOD在选择性肝血流阻断下,安全快捷地行第Ⅷ肝段的切除是完全可行的.
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.