简介：AIM:Toinvestigatetheefficacyofneoadjuvantchemoradiotherapy(NACRT)forresectabilityoflocallyadvancedgastriccancer(LAGC).METHODS:BetweenNovember2007andJanuary2014,29patientswithLAGC(clinicallyT3withdistalesophagusinvasion/T4orbulkyregionalnodemetastasis)thatweretreatedwithNACRTfollowedbyD2gastrectomywereincludedinthisstudy.ResectabilitywasevaluatedwithradiologicandendoscopicexamsbeforeandafterNACRT.Usingthreedimensionalconformalradiotherapy,patientsreceived45Gy,withadailydoseof1.8Gy.Theentiretumorextentandtheregionalmetastaticlymphnodeswereincludedinthegrosstumorvolume.PatientspresentingwitharesectabletumorafterNACRTreceivedatotalorsubtotalgastrectomywithD2dissection.ThepathologictumorresponsewasevaluatedusingJapaneseGastricCancerAssociationhistologicevaluationcriteria.PostoperativemorbiditywasevaluatedusingtheNationalCancerInstitute-CommonTerminologyCriteriaforAdverseEventsversion4.0.Overallsurvival(OS)andprogression-freesurvival(PFS)rateswereestimatedusingaKaplan-Meieranalysisandcomparedusingthelog-ranktest.RESULTS:Allpatientswereassessedasunresectablecases.Twenty-fourpatients(24/29;82.8%)showedLAGConpositronemissiontomography-computedtomography(CT)andcontrast-enhancedCT,whereasfourpatients(4/29;13.8%)withvagueinvasionorabutmenttoanadjacentorganunderwentdiagnosticlaparoscopy.Onepatient(1/29;3.4%),initiallyassessedasaresectablecase,underwentan'openandclosure'afterthetumorwasfoundtobeunresectable.Abutmenttoanadjacentorgan(34.5%)wasthemostcommonreasonforNACRT.TheclinicalresponserateonemonthafterNACRTwas44.8%.AfterNACRT,69%(20/29)ofpatientshadaresectabletumor.Ofthe20patientswitharesectabletumor,18patients(62.1%)underwentaD2gastrectomy.TheR0resectionratewas94.4%andtwopatients(2/18;11.1%)showedacompleteresponse.Themedianfollow-updurationwas13.5mo.Theone-yearOSandPFS

简介：AIM:ToinvestigatetheroleoftheoverexpressionofB7-H3inapoptosisincolorectalcancercelllinesandtheunderlyingmolecularmechanisms.METHODS:SW620cellsthathighlyoverexpressedB7-H3(SW620-B7-H3-EGFP)andHCT8cellsstablytransfectedwithB7-H3shRNA(HCT8-shB7-H3)werepreviouslyconstructedinourlaboratory.CellstransfectedwithpIRES2-EGFPwereusedasnegativecontrols(SW620-NCandHCT8-NC).Real-timePCRandwesternblottinganalysiswereusedtodetectthemRNAandproteinexpressionsoftheapoptosisregulatorproteinsBcl-2,Bcl-xlandBax.Acellproliferationassaywasusedtoevaluatethesurvivalrateanddrugsensitivityofthecells.Theeffectofdrugresistancewasdetectedbyacellcycleassay.Activecaspase-3westernblottingwasusedtoreflecttheanti-apoptoticabilityofcells.WesternblottingwasalsoperformedtodeterminetheexpressionofproteinsassociatedwiththeJak2-STAT3signalingpathwayandtheapoptosisregulatorproteinsafterthetreatmentwithAG490,aJak2specificinhibitor,inB7-H3overexpressingcells.ThedatawereanalyzedbyGraphPadPrism6usinganon-pairedt-test.RESULTS:WhetherbyoverexpressioninSW620cellsordownregulationinHCT8,B7-H3significantlyaffectedtheexpressionofanti-andpro-apoptoticproteins,atboththetranscriptionalandtranslationallevels,comparedwiththenegativecontrol(P<0.05).AcellproliferationassayrevealedthatB7-H3overexpressionincreasedthedrugresistanceofcellsandresultedinahighersurvivalrate(P<0.05).Inaddition,theresultsofcellcycleandactivecaspase-3westernblottingprovedthatB7-H3overexpressioninhibitedapoptosisincolorectalcancercelllines(P<0.05).B7-H3overexpressionimprovedJak2andSTAT3phosphorylationand,inturn,increasedtheexpressionofthedownstreamanti-apoptoticproteinsB-cellCLL/lymphoma2(Bcl-2)andBcl-xl,basedonwesternblotting(P<0.05).AftertreatingB7-H3overexpressingcellswiththeJak2-specificinhibitorAG490,thephosphorylationofJak2andSTAT3,andtheexp

简介：目的探讨Survivin蛋白、CDX2在结直肠癌及癌前病变中的表达,为结直肠癌的早期诊断、基因靶点治疗、评估预后、判断复发提供新的标记物。方法收集结直肠癌、腺瘤伴高级别上皮内瘤变、腺瘤伴低级别上皮内瘤变及正常对照组各30例,应用免疫组化方法分别检测各组中Survivin蛋白、CDX2的表达情况。结果Survivin蛋白表达在腺癌组、高级别上皮内瘤变组、低级别上皮内瘤变组及正常组各组间均有明显差异（P〈0.01）;CDX2表达在腺癌组与低级别瘤变组、正常组之间,高级别上皮内瘤变组与低级别上皮内瘤变组、正常组之间,低级别上皮内瘤变组与正常组之间均有显著差异（P〈0.01）,而腺癌组与高级别组之间无明显差异（P〉0.05）。Survivin与CDX2的表达呈高度密切负相关（r=-0.64,P〈0.01）。结论Survivin蛋白、CDX2是结直肠癌发生发展的重要生物学标记物,两者有密切相关性,联合检测可为结直肠癌早期诊断、基因靶点治疗、评估预后、判断复发提供新的手段。

简介：目的：探索阿德福韦酯（ADV）在不同时期联合聚乙二醇干扰素α-2a治疗HBeAg阳性的高病毒载量的慢性乙型肝炎患者的疗效。方法28例A组患者在开始治疗时给予ADV和聚乙二醇干扰素α-2a联合治疗，29例B组患者开始只给予ADV治疗，在经过平均（11.8±3.2）w治疗使血清HBVDNA≤4lgIU/ml时，再加入聚乙二醇干扰素α-2a治疗，两组均治疗48w。结果两组基线HBsAg定量分别为（4583.2±1749.3）IU/ml和（4620.3±1812.4）IU/ml，差异无统计学意义（P＞0.05），治疗结束时分别为[（759.4±72.3）IU/ml和（467.6±56.9）IU/ml，P±0.05]；A组HBsAg血清转换率和HBeAg血清转换率分别为7.1%和35.7%，显著低于B组的（20.7%和62.1%，P±0.05）；两组ALT复常率和HBVDNA阴转率无显著性相差（P＆gt;0.05）。结论对于HBeAg阳性的高病毒载量的慢性乙型肝炎患者，先经ADV治疗降低HBVDNA载量后再联合聚乙二醇干扰素α-2a治疗，可能经济、有效。