简介:目的了解我国内镜治疗的临床科研现状。方法逐期逐页手工检索《中华消化内镜杂志》(1984~2002年)及《中国内镜杂志》(1996~2002年)中发表的临床对照实验,按cochrane协作网RCF、CCT资料库中的判定标准进行严格评价。结果《中华消化内镜杂志》19卷87期中共刊临床性文章1196篇,其中RCTs85篇(7.17%),CCTs4篇(0.34%)。《中国内镜杂志》7卷37期中共刊临床性文章1122篇,其中RCTs51篇(4.54%),CCTs6篇(0.53%)。结论我国临床内镜治疗的防治性研究RCTs的数量和质量,还不能满足临床实践的需要。
简介:目的评价在粤东地区采用10d序贯疗法与传统三联疗法治疗幽门螺杆菌(Up)感染的临床疗效。方法将汕头市、揭阳市、汕尾市经胃镜下胃黏膜Hp快速尿素酶试验阳性或者^14C-尿素呼气试验阳性的患者132例,随机分为2组,治疗组67例,采用10d序贯疗法治疗,即前5d口服泮托拉唑20mg+阿莫西林1000mg,bid,后5d泮托拉唑20mg+克拉霉素500mg+甲硝唑400mg,bid。对照组65例,采用标准三联疗法:泮托拉唑20mg+甲硝唑400mg+阿莫西林1000mg,bid,疗程7d。疗程结束后4周行快速尿素酶试验或者^14C-尿素呼气试验检测却。结果治疗组却根除率为94.03%,对照组73.85%,两组比较有显著性差异(P〈0.05)。结论在粤东地区采用10d序贯疗法对幽门螺杆菌感染的根除率高于传统的7d三联疗法。
简介:目的了解先天性肝外门腔静脉分流(Abernethy畸形)的临床特点。方法回顾分析1例Abernethy畸形并下消化道出血患者的临床资料,并进行文献复习。结果本例患者男性,20岁。反复间歇性便血20年。重度贫血貌,外周血WBC2.0×109/L,RBC2.6×1012/L,HB41g/L,PLT125×109/L;粪红色软便,OB(+++),血液(++);经电子胃镜、电子结肠镜、腹部血管彩超、腹部CT血管重建和磁共振成像检查诊断,行结直肠周围血管离断和直肠下段曲张静脉缝扎术,术后恢复良好,随访2年,生活质量好。结论Abernethy畸形分为Ⅰ型和Ⅱ型,Ⅱ型患者肝外门静脉广泛扩张并导致门腔静脉分流,以下消化道出血为主要临床表现。
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
简介:背景:食管癌是一种常见的消化道恶性肿瘤,血管生成在食管鳞癌的发生、发展中具有重要作用。缺氧诱导因子(HIF)-1α、HIF-2α是机体对缺氧适应性调节中的重要调控蛋白,在大多数恶性肿瘤中有表达,可通过调节血管内皮生长因子(VEGF)的表达诱导肿瘤血管生成。目的:探讨食管鳞癌组织中HIF-1α、HIF-2α、VEGF的表达和微血管密度(MVD)之间的关系及其与肿瘤临床病理病理之间的关系。方法:应用免疫组化方法分别检测62例食管鳞癌,40例食管鳞状上皮异型增生和42例正常食管上皮组织中HIF-1α、HIF-2α、VEGF的表达和MVD值,分析其间的相关性及其与肿瘤临床病理特征之间的相关性。结果:食管鳞癌组织中HIF-1α、HIF-2α和VEGF的表达较异型增生和正常上皮组织显著增加(P<0.01),MVD值亦显著增高(P<0.01);且HIF-1α和VEGF的表达与肿瘤浸润深度,淋巴结转移和TNM分期呈正相关,HIF-1α、HIF-2α的表达与VEGF的表达和MVD值呈正相关。结论:HIF-1α、HIF-2α在食管鳞癌组织中存在一定程度的表达,其可能通过诱导VEGF的表达参与食管鳞癌的血管生成;HIF-1α、HIF-2α和VEGF的过度表达可能成为判断食管鳞癌生物学行为的重要指标.
简介:TheTenthInternationalGastricCancerCongress(IGCC)washeldinVerona,Italy,fromJune19to22,2013.Themeetingenclosedvariousaspectsofstomachtumormanagement,includingbothtightlyclinicalapproaches,andtopicsmorerelatedtobasicresearch.Moreover,anoverviewongastrointestinalstromaltumorswasprovidedtoo,althoughherenotdiscussed.Herewewilldiscusssometopicsrelatedtomolecularbiologyofgastriccancer(GC),inherenttoprognostic,diagnosticandtherapeutictoolsshownattheconference.Resultsaboutwellknownsubjects,suchasE-cadherinlossofexpression/function,werepresented.Theyrevealedthatothermutationsofthegenewereidentified,showingacontinuousresearchtoimprovediagnosisandprognosisofstomachtumor.Simultaneously,newpossiblemolecularmarkerswithanestablishedroleforotherneoplasms,werediscussed,suchasmesothelin,stomatin-likeprotein2andNotch-1.Hence,awideoverviewincludingbotholdandnewdiagnostic/prognostictoolswasoffered.GreatattentionwasalsodedicatedtopossibledrugstobeusedagainstGC.Theyincludedmonoclonalantibodies,suchasMS57-2.1,drugsusedinotherpathologies,suchasmaraviroc,andnaturalextractsfromplantssuchasbiflorin.WewouldliketocontributetosummarizethemostimpressivestudiespresentedattheIGCC,concerningnovelfindingsaboutmolecularbiologyofgastriccancer.Althoughfurtherinvestigationswillbenecessary,itcanbeinferredthatmoreandmoretoolsweredeveloped,soastobetterfacestomachneoplasms.
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
简介:背景:肝纤维化病程迁延且药物治疗效果不理想,基因治疗将成为这一领域研究的热点.研究显示白细胞介素(IL)-10对肝脏具有保护作用,可阻止肝纤维化的发生、发展.目的:克隆并鉴定Sprague-Dawley(SD)大鼠IL-10基因的全长cDNA,为进一步构建大鼠IL-10腺病毒重组子和肝纤维化基因治疗的研究奠定基础.方法:自行设计IL-10上下游引物,以逆转录聚合酶链反应(RT-PCR)从SD大鼠脾脏单核细胞中扩增编码大鼠成熟IL-10肽链的cDNA片断.扩增产物与连接载体pMD-18T连接后转化感受态菌DH5α,构建重组载体pMD-18T-IL-10.结果:以SD大鼠脾脏单核细胞总RNA为模板,RT-PCR扩增出大小为540bp的大鼠IL-10cDNA片断.所构建的重组质粒经HindⅢ+KpnⅠ双酶切显示含有目的基因片段,测序结果证实扩增出的DNA片断与大鼠IL-10基因序列相符,表明编码区无基因突变.结论:成功地克隆了大鼠IL-10基因的全长cDNA,并构建了重组载体pMD-18T-IL-10.