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219 个结果
  • 简介:本文介绍了Ⅱc早期胃癌常规内镜、色素内镜、NBI+放大内镜和超声内镜的检查方法和诊断要点,强调了病变分化程度、浸润深度、范围精确判断的重要性,对临床诊治很有指导意义。

  • 标签: 胃癌 早期诊断 内镜
  • 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.

  • 标签: 影响作用 C-MYB 反感觉RNA TGF-Β1 α1-Ⅰ 胶原质表达
  • 简介:目的掌握影响肝性脑病(HE)预后的危险因素。方法对国内发表资料完整、统计设计合理的11个HE研究(共1131例)进行荟萃分析。结果HE诱因分别为:消化道出血43.8%,感染33.9%,电解质紊乱29.1%,大量利尿和/或放腹水14.5%,饮食不节14.2%,肾功能衰竭13.0%,手术/创伤6.0%,药物4.5%,输血/输复合氨基酸3.2%,腹泻2.4%,便秘1.8%,原因未明/无2.7%.与HE死亡率相关因素包括:①诱因数:单一诱因死亡率33%,二种诱因为71.4%;三种或以上诱因为92.3%;三组间差异显著(P〈0.01)。②诱因纠正情况:可纠正组死亡率为18.2%,未纠正组为100%,二组间差异显著(P〈0.01)。③HE分期:Ⅰ期死亡率为O%,Ⅱ期为4.9%.Ⅲ期为34.4%,Ⅳ期为85.1%,四组间差异显著(P〈0.01)。④肝功(Child—pugh分级):A级死亡率为19.8%,B级为49.8%,C级为80.8%,三组间差异显著(P〈0.01)。结论重视HE预后的危险因素,警惕多种诱因并存,消除其不利影响。保护肝功能是改善HE预后的重要途径。

  • 标签: 肝性脑病 荟萃分析 危险因素
  • 简介:目的建立快速、敏感、特异性强、重复性好的抗单纯疱疹1病毒(HSV1)IgG检测方法。方法制备纯化抗原和抗体,对间接ELISA法检测人单纯疱疹1病毒(HSV1)IaG抗体方法进行优化改良,并对随机选择的331份临床孕妇血清标本进行检测,用德国DIMAHSV1-IgGELISA试剂与本试剂同时比较。结果自制试剂盒的敏感性、特异性和诊断指数分别为92.9%,92、2%和185.1%,与德国试剂的符合率为92.3%。结论本试剂的质量与国外商品试剂相似,具有较好的特异性和敏感性,可广泛应用于临床优生优育检测。

  • 标签: HSV1 IGG ELISA
  • 简介:AIMToinvestigatetheroleofthecomplement5a(C5a)/C5areceptor(C5aR)pathwayinthepathogenesisofacuteliverfailure(ALF)inamousemodel.METHODSBALB/cmicewererandomlyassignedtodifferentgroups,andintraperitonealinjectionsoflipopolysaccharide(LPS)/D-galactosamine(D-GalN)(600mg/kgand10μg/kg)wereusedtoinduceALF.TheKaplanMeiermethodwasusedforsurvivalanalysis.Serumalanineaminotransferase(ALT)levels,atdifferenttimepointswithina1-wkperiod,weredetectedwithabiochemistryanalyzer.Pathologicalexaminationoflivertissuewasperformed36hafterALFinduction.Serumcomplement5(C5),C5a,tumornecrosisfactor-α(TNF-α),interleukin(IL)-1β,IL-6,high-mobilitygroupproteinB1(HMGB1)andsphingosine-1-phosphatelevelsweredetectedbyenzyme-linkedimmunosorbantassay.Hepaticmorphologicalchangesat36hafterALFinductionwereassessedbyhematoxylinandeosinstaining.ExpressionofC5aR,sphingosinekinase1(SphK1),p38-MAPKandp-p38-MAPKinlivertissue,peripheralbloodmononuclearcells(PBMCs)andperitonealexudativemacrophages(PEMs)ofmiceorRAW264.7cellswasanalyzedbywesternblotting.C5aRmRNAlevelsweredetectedbyquantitativereal-timePCR.RESULTSActivationofC5andup-regulationofC5aRwereobservedinlivertissueandPBMCsofmicewithALF.BlockadeofC5aRwithaC5aRantagonist(C5aRaC5aRa)significantlyreducedthelevelsofserumALT,inflammatorycytokines(TNF-α,IL-1βandIL-6)andHMGB1,aswellasthelivertissuedamage,butincreasedthesurvivalrates(P<0.01forall).BlockadeofC5aRdecreasedSphK1expressioninbothlivertissueandPBMCssignificantlyat0.5hafterALFinduction.C5aRapretreatmentsignificantlydownregulatedthephosphorylationofp38-MAPKinlivertissuesofALFmiceandC5astimulatedPEMsorRAW264.7cells.Moreover,inhibitionofp38-MAPKactivitywithSB203580reducedSphK1proteinproductionsignificantlyinPEMsafterC5astimulation.CONCLUSIONTheC5a/C5aRpath

  • 标签: 尖锐的肝失败 C5a/C5aR P38-MAPK 鞘氨醇 kinase 1
  • 简介:嗜酸性粒细胞性胃肠炎(eosinophilicgastroenteritis,EG),是一种以胃肠道某些部位局限性或弥漫性嗜酸性粒细胞浸润为特征的疾病。临床上分为3:(1)黏膜:最常见,主要为胃肠道粘膜内大量嗜酸性粒细胞浸润,以消化吸收不良为主要表现;(2)肌层,较少见,主要表现为胃肠壁增厚,僵硬呈结节状,可引起幽门梗阻及肠梗阻;

  • 标签: 胃肠炎 嗜酸性粒细胞 浆膜型 腹水
  • 简介:1999年日本内镜专家小野裕之及後藤田桌志等人首先开发出一种先端带陶瓷绝缘头的新型电刀(IT刀),可以一次性完整切除直径大于2cm的早期癌病灶,切除深度包括黏膜全层、黏膜肌层及大部分黏膜下层,这一手术被称为内镜黏膜下剥离术(Endoscopicsubmucosaldissection,ESD)。内镜黏膜下剥离术治疗消化道良性肿瘤,其治疗效果与外科相近,又可避免开腹手术带来的创伤和并发症,已逐渐成为治疗消化道癌前病变的一种标准微创治疗手段。

  • 标签: 侧向发育型肿瘤 ESD 内镜黏膜下剥离术 ENDOSCOPIC 消化道癌前病变 护理
  • 简介:AIM:Toelucidatethemechanism(s)bywhichS-adenosyl-L-methionine(SAM)decreaseshepatitisCvirus(HCV)expression.METHODS:WeexaminedtheeffectsofSAMonviralexpressionusinganHCVsubgenomicrepliconcellculturesystem.Huh7HCV-repliconcellsweretreatedwith1mmol/LSAMfordifferenttimes(24-72h),thentotalRNAandproteinswereisolated.cDNAwassynthesizedandrealtime-PCRwasachievedtoquantifyHCV-RNA,superoxidedismutase1and2(SOD-1,SOD-2)catalase,thioredoxin1,methionineadenosyltransferase1Aand2A(MAT1A,MAT2A)expression,andGAPDHandRPS18asendogenousgenes.Expressionofcellularandviralproteinwasevaluatedbywestern-blotanalysisusingantibodiesvsHCV-NS5A,SOD-1,SOD-2,catalase,thioredoxin-1,MAT1A,MAT2A,GAPDHandactin.TotalglutathionelevelsweremeasuredatdifferenttimesbyEllman’srecyclingmethod(0-24h).Reactiveoxidativespecies(ROS)levelswerequantifiedbythedichlorofluoresceinassay(0-48h);Pyrrolidindithiocarbamate(PDTC)wastestedasanantioxidantcontrolandH2O2asapositiveoxidantagent.RESULTS:SAMexpositiondecreasedHCV-RNAlevels50%-70%comparedtonon-treatedcontrols(24-72h).SAMinducedasynergicantiviraleffectwithstandardIFNtreatmentbutitwasindependentofIFNsignaling.Inaddition,1mmol/LSAMexpositiondidnotmodifyviralRNAstability,butitneedscellulartranslationmachineryinordertodecreaseHCVexpression.TotalglutathionelevelsincreaseduponSAMtreatmentinHCV-repliconcells.Transcriptionalantioxidantenzymeexpression(SOD-1,SOD-2andthioredoxin-1)wasincreasedatdifferenttimesbutinterestingly,therewasnosignificantchangeinROSlevelsuponSAMtreatment,contrarytowhatwasdetectedwithPDTCtreatment,whereanaverage40%reductionwasobservedinexposedcells.TherewasaturnoverfromMAT1A/MAT2A,sinceMAT1Aexpressionwasincreased(2.5fold-timesat48h)andMAT2Awasdiminished(from24h)uponSAMtreatmentatboththetranscriptionalandtranslationall

  • 标签: Hepatitis C virus S-ADENOSYL-L-METHIONINE Superoxide DISMUTASE
  • 简介:目的研究c—erbB—2和c—myc癌基因在胃癌组织中扩增的意义。方法应用非放射性原位杂交技术检测81例胃癌标本中c—erbB—2和c—myc的扩增情况。结果C—erbB—2和c—myc在胃癌中的扩增率分别为50.6%和67.9%。c—erbB—2基因与胃癌组织分化程度、浸润深度及淋巴结转移有关(P〈0.05),分化程度越差、浸润深度越深、淋巴结有转移,c—erbB—2基因表达率越高,而C—myc癌基因与胃癌组织分化程度、浸润深度及淋巴结转移无关。两基因的扩增具有显著的相关性(x^2=7.26,P〈0.01)。结论c—erbB—2和c—myc扩增是胃癌发生过程中的一个重要的生物学因素,且两者具有较好的协同作用。

  • 标签: 胃癌 C—erbB—2基因 C—myc基因 原位杂交
  • 简介:胃癌是世界范围内高发的恶性肿瘤.正常胃黏膜在外源及内源性致病因素共同作用下发生恶变,而肿瘤的发生、发展、浸润、转移对人类身心健康造成严重影响。蛋白酪氨酸激酶(proteintyrosinekinase,PTK)是一类备受关注的效应蛋白,研究发现PTK参与了人类多种肿瘤的发生及发展过程,部分能作为肿瘤预后评估指标。c-Met癌基因编码的蛋白产物属于受体型蛋白酪氨酸激酶家族,我们尝试回顾其在人类胃腺癌中相关研究,分析Met蛋白酪氨酸激酶在胃癌发生、发展中所扮演的角色及对临床治疗的意义。

  • 标签: c-Met癌基因 胃癌发生 蛋白酪氨酸激酶 恶性肿瘤 致病因素 世界范围
  • 简介:INTRODUCTIONMolecularbiologyhasmadeatremendousimpactonthediagnosisandtreatmentofliverdiseases.Inparticular,advancesinmolecularbiologymadepossiblethediscovery

  • 标签: HEPATITIS C molecular BIOLOGY VIRAL HEPATITIS
  • 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。

  • 标签: 基因表达 大肠炎 溃疡疾病 治疗
  • 简介:目的观察分子吸附再循环系统(MARS)对肝衰竭患者Th1/Th2细胞因子水平的影响,探讨MARS在肝衰竭治疗中的临床价值。方法28例肝衰竭患者接受MARS治疗,采用ELISA法测定血清TNF-α、IFN-γ、IL-6、IL-10和IL-12水平,比较其在治疗前后的变化。结果在MARS治疗结束时,患者血清TNF-α、IFN-γ、IL-6水平分别为(40.3±3.7)pg/ml、(25.9±1.9)pg/ml、(33.6±2.5)pg/ml,显著低于治疗前【(81.5±6.2)pg/ml、(49.3±2.2)pg/ml、(66.8±4.1)pg/ml,P均〈0.01】;治疗结束时血清IL-10和IL-12水平分别为(39.3±2.6)pg/ml和(168.7±8.5)pg/ml,显著高于治疗前【(37.1±1.9)pg/ml和(98.6±6.5)pg/ml,P〈0.01】;在MARS治疗结束后7d,患者TNF-α、IFN-γ、IL-6、IL-10和IL-12水平分别为(80.3±3.9)pg/ml、(48.6±2.1)pg/ml、(65.1±2.4)pg/ml、(38.4±2.2)pg/ml、(99.8.6±7.9)pg/ml,与治疗前相比,差异无显著性(P〉0.05)。结论MARS治疗肝衰竭患者有利于纠正失衡的Th1/Th2细胞因子水平,减轻免疫反应对肝组织的损伤,为肝细胞再生提供机会。

  • 标签: 肝衰竭 分子吸附再循环系统 肿瘤坏死因子-Α 细胞因子
  • 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.

  • 标签: hypoxia-inducible factor-1α COLORECTALCANCER MUTT homolog-1 8-oxo-dGTP
  • 简介:病例:患者女,62岁,主诉“上腹痛2年,牙龈出血2个月”于2010年4月19日收治入院。患者2午前于本院行肖镜检查并取活检,病理结果:(胃体)低分化腺癌(见图1),免疫组化检查:Ki-67(+)、CK(+)、CEA(+)。诊断“胃癌”明确,遂行胃癌根治术,术后未行后续治疗。患营诉间断上腹隐痛,服用药物不洋。2个月前自觉口腔右下颌磨牙区出现一包块,约黄豆大小,咀嚼时稍感小适,无疼痛。肿物生长较快,就诊时已有鹌鹑蛋大小,并时有出血,可自行停止。入院检查:全身一般情况好,左锁骨上方町扪及数个黄移大小的淋巴结,质硬,黏连,小可推动。心肺佥体未发现异常。

  • 标签: 胃肿瘤 牙龈 肿瘤转移
  • 简介:目的观察端粒酶催化亚基(hTERT)、c-myc在胆囊癌中的表达,探讨hTERT及c-myc与胆囊癌的相关性。方法采用免疫组织化学方法检测15例胆囊癌组织、癌旁组织、正常胆囊黏膜及20例胆囊腺瘤性息肉组织hTERT、c-myc的表达。结果①正常胆囊黏膜、胆囊腺瘤性息肉组织、癌旁组织及胆囊癌组织hTERT的阳性表达率分别为6,67%(1/15)、10.00%(2/20)、33.33%(5/15)及80%(12/15);c-myc阳性表达率分别为20.00%(3/15)、45.00%(9/20)、40%(6/15)及86.67%(13/15);胆囊癌组织中hTERT与c-myc阳性表达率明显高于其它组织(P〈0.05);②胆囊癌组织hTERT和c-myc表达与淋巴结转移有关,伴淋巴结转移的胆囊癌hTERT及c-myc阳性表达率明显高于无淋巴结转移者(P〈0.05);③c-myc在hTERT阳性的胆囊癌组织的表达率明显高于hTERT阴性组(P〈0.05)。结论hTERT过度表达在胆囊癌的发生发展过程中具有重要作用,c-myc在转录水平上调控hTERT的表达,进而激活端粒酶促进胆囊癌的形成。

  • 标签: 胆囊癌 hTERI C-MYC
  • 简介:背景:临床上评估炎症性肠病活动性的方法有临床活动度、C反应蛋白(CRP)和血沉等,三者常不一致。目的:探讨CRP评估炎症性肠病活动性的价值。方法:以Logistic回归法分析80例克罗恩病(CD)、70例溃疡性结肠炎(UC)患者血清CRP与血沉、临床活动度、内镜表现活动性、组织学活动性、低白蛋白血症、贫血、白细胞升高的关系;比较临床严重度、病变部位和药物治疗对CRP的影响。结果:CD中CRP与血沉相关;UC中CRP与血沉、外周血白细胞升高相关。CRP在活动性CD中显著升高(P〈0.01),重度CD和结肠CD中CRP升高较其他各组明显(P〈0.05);活动性UC中CRP亦显著升高(P〈0.01),重度组中CRP升高较其他组明显(P〈0.05)。药物有效控制临床表现时.CRP显著下降(P〈0.01),复发时重新升高(P〉0.05)。结论:CRP升高更适于反映中至重度结肠CD和UC的活动性:具有快速反映药物治疗有效性的特点。

  • 标签: C反应蛋白质 CROHN病 溃疡性结肠炎
  • 简介:AIM:Toevaluatetheimpactofsociodemographic/clinicalfactorsonearlyvirologicalresponse(EVR)topegin-terferon/ribavirinforchronichepatitisC(CHC)inclinicalpractice.METHODS:Weconductedamulticenter,cross-sectional,observationalstudyinHepatologyUnitsof91Spanishhospitals.CHCpatientstreatedwithpeginterferonα-2aplusribavirinwereincluded.EVRwasdefinedasundetectablehepatitisCvirus(HCV)-ribonucleicacid(RNA)or≥2logHCV-RNAdecreaseafter12wkoftreatment.AbivariateanalysisofsociodemographicandclinicalvariablesassociatedwithEVRwascarriedout.IndependentfactorsassociatedwithanEVRwereanalyzedusingamultipleregressionanalysisthatincludedthefollowingbaselinedemographicandclinicalvariables:age(≤40yearsvs>40years),gender,race,educationallevel,maritalstatusandfamilystatus,weight,alcoholandtobaccoconsumption,sourceofHCVinfection,alanineaminotransferase(ALT)andaspartateaminotransferase(AST)levels,andgammaglutamyltranspeptidase(GGT)(≤85IU/mLvs>85IU/mL),serumferritin,serumHCV-RNAconcentration(<400000vs≥400000),genotype(1/4vs3/4),cirrhoticstatusandribavirindose(800/1000/1200mg/d).RESULTS:Atotalof1014patientswereincludedinthestudy.Meanageofthepatientswas44.3±9.8years,70%weremale,and97%wereCaucasian.ThemainsourcesofHCVinfectionwereintravenousdrugabuse(25%)andbloodtransfusion(23%).SeventyeightpercentwereinfectedwithHCVgenotype1/4(68%hadgenotype1)and22%withgenotypes2/3.TheHCV-RNAlevelwas>400000IU/mLin74%ofpatients.ThemeanALTandASTlevelswere88.4±69.7IU/mLand73.9±64.4IU/mL,respectively,andmeanGGTlevelwas82±91.6IU/mL.Themeanferritinlevelwas266±284.8μg/L.Only6.2%ofpatientspresentedwithcirrhosis.Allpatientsreceived180mgofpeginterferonα-2a.Themostfrequentlyusedribavirindoseswere1000mg/d(41%)and1200mg/d(41%).Theplannedtreatm

  • 标签: ANTIVIRAL therapy BASELINE FACTORS Early virological