简介:目的研究Hp长期感染对胃粘膜病变的转归的影响.方法随防了62例10年前Hp感染患者,并分析对比10年前后Hp感染情况、胃镜和病理组织学变化.结果①63例患者16例(25.4%)Hp转阴,47例(74.6%)Hp持续阳性.②Hp持续阴性者10年前后消化性溃疡(PU)的发生率分别为29.78%和53.19%(P<0.05),Hp转阴者10年前后消化性溃疡(PU)的发生率分别为68.8%和12.5%(P<0.05)③Hp持续阳性者10年前后慢性炎症严重程度积分分别为1.77±0.43和2.13±0.34(P<0.01),肠上皮化生(IM)严重程度积分分别为1.13±0.35和1.63±0.52(P<0.05);Hp转阴者10年前后慢性炎症严重程度积分分别为1.81±0.40和1.31±0.48(P<0.01),肠上皮化生(IM)严重程度积分分别为1.6±0.55和1.4±0.59(P<0.05);Hp持续阳性者10年前后胃粘膜糜烂的发生分别为17.02%和38.29%(P<0.05),IM的发生分别为17.02%和44.68%(P<0.01);Hp转阴者10年前后IM的发生均为31.25%,胃粘膜糜烂10年后完全消失.结论根除Hp不仅能减轻胃粘膜的炎症程度,而且能阻止肠化的发生和发展.
简介:目的观察α-干扰素和CD3AK细胞阻断慢性乙型肝炎演变为肝硬化和肝细胞癌(HCC)的有效性.方法61例CHB分为A、B两组,A组31例用IFn-α3Mu深部皮下注射,第一月每日1次,第2~6月隔日1次;CD3AK每周1次静滴,12次为一疗程;B组30例用辅助对症治疗.治疗后6月检测血清ALT,HBeAg,抗-HBe,HBVDNA,AFP,蛋白电泳,B型超声,CT扫描,连续观察10年.结果A组ALT复常,HB以g阴转,抗-HBe阳转,HBVDNA阴转,分别为80.6%,48.3%,45.2%和51.6%;B组分别为67%,10%,6.7%和6.7%;A组肝硬化,HCC发病率分别为3.2%和0%,B组为33%和16.7%.结论HBV是LC、HCC的主要病因,抗病毒和免疫治疗不仅是治疗CHB的有效方法,而且是阻断CHB演变为LC、HCC的有效方法之一.
简介:瞄准:与ulcerative(UC)在病人的结肠的粘膜检验metalloproteinase-1(MMP-1)和metalloproteinase-1(TIMP-1)的织物禁止者的表示。方法:颠倒抄写聚合酶链反应(RT-PCR),免疫组织化学被用来与UC和控制在病人在mRNA和蛋白质层次学习MMP-1和TIMP-1的表达式。在MMP-1mRNA,TIMP-1mRNA,MMP-1mRNA/TIMP-1mRNA比率和有UC的病人的临床的症状的严厉之间的关系也被分析。结果:MMP-1mRNA和TIMP-1mRNA在的表示溃烂并且煽动了结肠的粘膜在非煽动的结肠的粘膜比那显著地高(P<0.001),但是有不,统计上,在UC病人和正常的非煽动的结肠的粘膜的有效差量控制(P>0.05)。在UC病人的溃烂的结肠的粘膜的MMP-1和TIMP-1的mRNA表达式被80褶层和2.2褶层增加,分别地什么时候与正常控制相比。在煽动的结肠的粘膜,增加分别地是30褶层和1.6褶层。Immunohistochemical分析显示出那在之中溃烂,发炎,并且UC病人的非煽动的结肠的mucosae和正常控制,MMP-1表示的积极的率分别地是87%,87%,40%和35%,并且TIMP-1表示的积极的率分别地是89%,89%,80%和75%。而且,MMP-1mRNA,TIMP-1mRNA和MMP-1mRNA/TIMP-1mRNA比率的表示与临床的症状(P<0.05)的严厉被相关。结论:在结肠的粘膜在UC病人引起细胞外的矩阵(ECM)和溃疡的过多的水解作用的diseased的MMP-1的过多的表示。MMP-1mRNA,TIMP-1mRNA和MMP-1mRNA/TIMP-1mRNA比率能被用作简历标记与UC在病人判定临床的症状的严厉。外长的TIMP-1或MMP-1禁止者治疗是为有UC的病人的新奇治疗。
简介:AIMToinvestigatetherolesandinteractionsofmutThomolog(MTH)-1andhypoxia-induciblefactor(HIF)-1αinhumancolorectalcancer(CRC).METHODS:TheexpressionanddistributionofHIF-1αandMTH-1proteinsweredetectedinhumanCRCtissuesbyimmunohistochemistryandquantitativerealtimepolymerasechainreaction(qRT-PCR).SW480andHT-29cellswereexposedtonormoxiaorhypoxia.ProteinandmRNAlevelsofHIF-1αandMTH-1wereanalyzedbywesternblottingandqRT-PCR,respectively.InordertodeterminetheeffectofHIF-1αontheexpressionofMTH-1andtheamountof8-oxodeoxyguanosinetriphosphate(dGTP)inSW480andHT-29cells,HIF-1αwassilencedwithsmallinterferingRNA(siRNA).GrowthstudieswereconductedoncellswithHIF-1αinhibitionusingaxenografttumormodel.Finally,MTH-1proteinwasdetectedbywesternblottinginvivo.RESULTS:HighMTH-1mRNAexpressionwasdetectedin64.2%ofcases(54/84),andthiswassignificantlycorrelatedwithtumorstage(P=0.023)andsize(P=0.043).HIF-1αproteinexpressionwascorrelatedsignificantlywithMTH-1expression(R=0.640;P〈0.01)inhumanCRCtissues.HypoxicstressinducedmRNAandproteinexpressionofMTH-1inSW480andHT-29cells.InhibitionofHIF-1αbysiRNAdecreasedtheexpressionofMTH-1andledtotheaccumulationof8-oxo-dGTPinSW480andHT-29cells.Intheinvivoxenografttumormodel,expressionofMTH-1wasdecreasedintheHIF-1αsiRNAgroup,andthetumorvolumewasmuchsmallerthanthatinthemocksiRNAgroup.CONCLUSION:MTH-1expressioninCRCcellswasupregulatedviaHIF-1αinresponsetohypoxicstress,emphasizingthecrucialroleofHIF-1α-inducedMTH-1intumorgrowth.
简介:AIM:Toinvestigatetheeffectsofc-mybantisenseRNAoncellproliferationandtheexpressionofc-myb,TGF-β1andα1-Ⅰcollageninculturedhepaticstellatecells(HSC)fromrats.METHODS:Recombinantretroviralvectorofc-mybantisensegene(pDOR-myb)wasconstructed,andthentransfectedintoretroviralpackagecelllinePA317bymeansofDOTAP.ThepseudovirusesproducedfromtheresistantPA317cellswereselectedwithG418toinfectHSCsisolatedfromratlivers.Thecellproliferationwasmeasuredby3-[4,5-Dimethylthiazolzyl]-2,5-diphenyltetrazo-diumbromide(MTT)method.Theexpressionofc-myb,α1-ⅠcollagenandTGF-β1rnRNA,andc-mybproteininHSCswasdetectedwithsemi-quantitivereversetranseription-polymerasechainreaction(RT-PCR)andWestern-blotrespectively.RESULTS:HSCsfromratswereisolatedsuccessfullywiththeviability>98%.InthepDOR-mybinfectedHSCs,thecmybproteinexpression,cellproliferation,andα1-ⅠcollagenandTGF-β1mRNAexpressionwererepressedsignificantlycomparedwiththeircorrespondingcontrolgroups(P<0.01).CONCLUSION:c-mybplaysakeyroleinactivationandproliferationofHSC.c-mybantisenseRNAcaninhibitcellproliferation,α1-ⅠcollagenandTGF-β1mRNAexpression,suggestingthatinhibitionofc-mybgeneexpressionmightbeapotentialwayforthetreatmentofliverfibrosis.
简介:AIM:Toclarifythecorrelationwithphenotypicexpression,clinicopathologicalfeatures,geneticalterationandmicrosatellite-instabilitystatusinsmallintestinaladenocarcinoma(SIA).METHODS:Thecasesof47patientsdiagnosedwithprimarySIAsthatweresurgicallyresectedatourinstitutionin1975-2005werestudied.Wereviewedclinicopathologicalfindings(age,gender,tumorsize,grossappearance,histologicalmorphologictype,invasiondepth,lymphaticpermeation,venousinvasion,andlymphnodemetastasis),andtheimmunohistochemicalexpressionofMUC5AC,MUC6,MUC2,CD10,andmismatch-repair(MMR)proteins(MLH1andMSH2).WeanalyzedKRASandBRAFgenemutations,andthemicrosatelliteinstability(MSI)status.TheimmunohistochemicalstainingofCD10,MUC2,MUC5ACandMUC6wasconsideredpositivewhendistinctstainingin>5%oftheadenocarcinomacellswasrecorded.ToevaluateofMMRproteinexpression,weusedadjacentnormaltissueincludinglymphoidfollicles,inflammatorycells,andstromalcellsasaninternalpositivecontrol.SectionswithoutnuclearstaininginthetumorcellswereconsideredtohavelosttheexpressionoftherespectiveMMRprotein.RESULTS:Therewere29malesand18femalespatients(meanage59.9years,range:23-87years).Tumorswerelocatedintheduodenumin14cases(30%),thejejunumin21cases(45%),andtheileumin12cases(25%).Aphenotypicexpressionanalysisrevealed20MUC2-positivetumors(42.6%),11MUC5AC-positive(23.4%),4MUC6-positive(8.5%),and7CD10-positive(14.9%).ThetumorsizesoftheMUC2(+)tumorsweresignificantlylargerthanthoseoftheMUC2(-)tumors(mean,5.7±1.4cmvs4.7±2.1cm,P<0.05).AllthreetumorswithadenomatouscomponentwerepositiveforMUC2(P<0.05).PolypoidappearancewasseensignificantlymorefrequentlyintheCD10(+)groupthanintheCD10(-)group(P<0.05).ThetumorsizewassignificantlylargerintheCD10(+)groupthanintheCD10(-)group(mean,5.9±1.4cmvs5.0±2.1cm,P<0.05).Of34SIAswithsuccessfullyobtainedMSIdata,4wereMSI-high.O