简介:目的总结门静脉压力(FPP)≥35cmH2O肝癌病人的外科治疗经验。方法回顾性分析1998年1月至2004年10月外科手术的11例FPP≥35cmH2O肝癌病人的手术资料、术后近期并发症及随访情况。结果全部病例手术均获得成功,无术中死亡。围手术期死亡率18.2%,术后并发症发生率100%,其中因上消化道大出血及肝功能衰竭死亡各2例(36.4%)。术后3mo、6mo及1年、2年、3年生存率分别为63.4%、36.4%、18.2%、18.2%、0%。结论FPP≥35cmH2O肝癌病人的手术切除有较高的并发症和死亡率,因此作者建议应将FPP≥35cmH2O肝癌视为肝部分切除的相对禁忌症。
简介:目的探讨3D打印技术在乳腺外科精确手术治疗中的意义。方法2例女性患者均是经查体、B超检查发现右侧乳腺有占位性病变,疑为恶性,要求手术切除。行多排CT胸部平扫、乳腺3.0TMR平扫+增强检查获得CT和MRI的DICOM数据,输入计算机进行立体模拟建模,而后打印,据此精准定位后手术。结果3D重建模型能清晰地显示乳腺解剖结构、肿瘤所在的三维空间及周围血供。精准定位后完整切除肿瘤,最大限度地保全腺体组织,手术时间大为减少。结论3D打印技术应用于乳腺肿瘤的手术治疗,能够清晰显示出解剖结构,辨识肿瘤毗邻血管,避免遗漏病灶,更有效地辅助术前规划,对提升乳腺复杂手术的安全性、加快手术速度,提高手术精确性有益,在乳腺外科精确手术治疗方面具有极大的应用前景。
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:探讨人表皮生长因子受体2(humanepidermalgrowthfactorreceptor2,HER2)和环氧化酶2(cyclooxygenase-2,COX-2)在非小细胞肺癌(non-smallcelllungcancer,NSCLC)中的表达,其各自与临床特征之间的关系及二者在NSCLC中表达的相互关系。方法采用免疫组化链霉菌抗生物素蛋白-过氧化物酶(streptavidin-peroxidase,SP)法检测72例NSCLC中HER2、COX-2的表达情况。结果①72例NSCLC中,HER2、COX-2的阳性表达率分别为55.6%、65.3%;②HER2在NSCLC中的阳性表达与组织学类型、分化程度、肿块大小、淋巴结转移及临床分期相关(P<0.05),而与性别、年龄、吸烟、病变部位无关(P>0.05);③COX-2的阳性表达与年龄、组织学类型、肿块大小、淋巴结转移及临床分期相关(P<0.05),而与性别、吸烟、病变部位及分化程度无关(P>0.05);④HER2、COX-2在NSCLC中的阳性表达呈正相关关系。结论HER2、COX-2可以作为判断NSCLC恶性程度的生物学指标。
简介:目的了解环氧化酶-2(COX-2)和基质金属蛋白酶-2(MMP-2)在甲状腺乳头状癌中的表达情况及相互关系。方法甲状腺乳头状癌和癌旁组织COX-2和MMP-2的表达采用SP免疫组化分析。结果甲状腺乳头状癌组织COX-2和MMP-2的阳性表达率为81.7%(49/60)和73.3%(44/60),20例癌旁正常滤泡上皮COX-2和MMP-2阳性表达率为5.0%(1/20)和25.0%(5/20),两者阳性表达率均以甲状腺乳头状癌中为高(P<0.01)。COX-2和MMP-2在有淋巴结转移组阳性表达明显高于无淋巴结转移组(P<0.05,P<0.01)。COX-2阳性表达强度与MMP-2的阳性表达强度之间呈显著的正相关(P<0.01)。结论COX-2和MMP-2在甲状腺乳头状癌组织中的表达密切相关,两者的高表达在甲状腺乳头状癌的发生和发展中具有重要作用。提示COX-2和MMP-2可作为临床诊断的指标和化学治疗的靶点。
简介:Objective:PyruvatekinasesM(PKM),includingthePKM1andPKM2isoforms,arecriticalfactorsinglucosemetabolism.PKM2promotesaerobicglycolysis,aphenomenonknownas"theWarburgeffect".ThepurposeofthisstudywastoidentifytherolesofPKM2inregulatingcellularmetabolism.Methods:TheCRISPR/Cas9systemwasusedtogeneratethePKM-knockoutcellmodeltoevaluatetheroleofPKMincellularmetabolism.LactatelevelsweremeasuredbytheVitrosLACslidemethodonanautoanalyzerandglucoselevelsweremeasuredbytheautoanalyzerAU5800.Themetabolismof13C6-glucoseor13C5-glutaminewasevaluatedbyliquidchromatography/massspectrometryanalyses.TheeffectsofPKMontumorgrowthweredetectedinvivoinatumor-bearingmousemodel.Results:WefoundthatbothPKM1andPKM2enabledaerobicglycolysis,butPKM2convertedglucosetolactatemuchmoreefficientlythanPKM1.Asaresult,PKM2reducedglucoselevelsreservedforintracellularutilization,particularlyfortheproductionofcitrate,andthusincreasedtheα-ketoglutarate/citrateratiotopromotethegenerationofglutamine-derivedacetylcoenzymeAthroughthereductivepathway.Furthermore,reductiveglutaminemetabolismfacilitatedcellproliferationunderhypoxiaconditions,whichsupportsinvivotumorgrowth.Inaddition,PKM-deletioninducedareverseWarburgeffectintumorassociatedstromalcells.Conclusions:PKM2playsacriticalroleinpromotingreductiveglutaminemetabolismandmaintainingprotonhomeostasis.ThisstudyishelpfultoincreasetheunderstandingofthephysiologicalroleofPKM2incancercells.
简介:Objective:TheresultsofapreviousstudyshowedthatacleardysregulationwasevidentintheglobalgeneexpressionoftheBCL11A-suppressedB-lymphomacells.Inthisstudy,thebonemorphogeneticproteinreceptor,typeII(BMPR2),E1Abindingproteinp300(EP300),transforminggrowthfactor-β2(TGFβ2),andtumornecrosisfactor,andalpha-inducedprotein3(TNFAIP3)geneexpressionpatternsinB-cellmalignancieswerestudied.Methods:TherelativeexpressionlevelsofBMPR2,EP300,TGFβ2,andTNFAIP3mRNAinB-lymphomacelllines,myeloidcelllines,aswellasincellsfromhealthyvolunteers,weredeterminedbyreal-timequantitativereversetranscriptpolymerasechainreaction(qRT-PCR)withSYBRGreenDye.Glyceraldehyde-3-phosphatedehydrogenase(GAPDH)wasusedasreference.Results:TheexpressionlevelofTGFβ2mRNAinB-lymphomacelllineswassignificantlyhigherthanthoseinthecellsfromthehealthycontrol(P<0.05).However,theexpressionlevelofTNFAIP3mRNAinB-malignantcellswassignificantlylowerthanthatofthehealthycontrol(P<0.05).TheexpressionlevelsofBMPR2andEP300mRNAshowednosignificantdifferencebetweenB-malignantcelllinesandthehealthygroup(P>0.05).InB-lymphomacelllines,correlationanalysesrevealedthattheexpressionofBMPR2andTNFAIP3(r=0.882,P=0.04)hadsignificantpositiverelation.TheexpressionlevelsofBMPR2,EP300,andTNFAIP3mRNAincelllinesfrommyeloidleukemiaweresignificantlylowerthanthoseinthecellsfromthehealthycontrol(P<0.05).TheexpressionlevelsofTGFβ2mRNAshowednosignificantdifferencebetweenmyeloidleukemiacelllinesandthehealthycontrolorB-malignantcelllines(P>0.05).TheexpressionlevelsofBMPR2,EP300,andTNFAIP3mRNAinB-lymphomacellsweresignificantlyhigherthanthoseofthemyeloidleukemiacells(P<0.05).Conclusion:DifferentexpressionpatternsofBMPR2,EP300,TGFβ2,andTNFAIP3genesinB-lymphomacellsexist.更多还原