简介：胃扭转自1866年Betti在尸检中发现以来，虽属少见病，但仍可占消化道疾病的0．4％。因其易于误/漏诊，因此提高对本病的X线诊断水平有十分重要的意义。为此，我们收集了1995-01／2005-04我院诊断的胃扭转病人50例，现结合有关资料，总结报告如下。

简介：消化性溃疡病传统上一直认为仅发生于成人，儿童极为少见，但近年来有逐渐上升趋势。其症状多不典型，常易误诊或漏诊。为进一步提高对本病的认识，现将近年来我们所遇到的127例儿童十二指肠球部溃疡报告如下。

简介：十二指肠胃返流病如果引起胃粘膜充血、水肿、糜烂等损害，称为胆汁返流性胃炎，是胃镜直视下常见的一种疾病，目前X线对该病报道甚少，现将我们在胃肠透视中发现有价值的X线征象，经与胃镜检查及胆汁酸浓度测定对照分析，制定的十二指肠胃返流病X线诊断与分型的经验介绍如下。

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简介：AIM:ToinvestigatetheeffectofhepatitisBvirus(HBV)XgeneonapoptosisandexpressionsofapoptosisfactorsinXgene-transfectedHepG2cells.METHODS:TheHBVXgeneeukaryonexpressionvectorpcDNVA3-XwastransientlytransfectedintoHepG2cellsbylipid-mediatransfection.UntransfectedHepG2andHepG2transfectedwithpcDNA3wereusedascontrols.ExpressionofHBxinHepG2wasidentifiedbyPT-PCR.MTTandTUNELwereemployedtomeasureproliferationandapoptosisofcellsin.threegroups.Semi-quantifiedRT-PCRwasusedtoevaluatetheexpressionlevelsofFas/FasL,Bax/Bcl-xL,andc-mycineachgroup.RESULTS:HBVXgenewastransfectedintoHepG2cellssuccessfully.RT-PCRshowedthatHBxwasonlyexpressedinHepG2/pcDNA3-Xcells,butnotexpressedinHepG2andHepG2/pcDNA3cells.AnalyzedbyMTT,cellproliferationcapacitywasobviouslylowerinHepG2/pcDNA3-Xcells(0.08910±0.003164)thaninHepG2(0.14410±0.004927)andHepG2/pcDNA3cells(0.12150±0.007159)(P＜0.05andP＜0.01).AnalyzedbyTUNEL,cellapoptosiswasmuchmoreinHepG2/pcDNA3-Xcells(980/2000)thanHepG2(420/2000),HepG2/pcDNA3cells(520/2000)(P＜0.05andP＜0.01).Evaluatedbysemi-quantifiedRT-PCR,theexpressionlevelofFas/FasLwassignificantlyhigherinHepG2cellstransfectedwithHBxthaninHepG2andHepG2/pcDNA3cells(P＜0.05andP＜0.01).Bax/Bcl-xLexpressionlevelwasalsoelevatedinHepG2/pcDNA3-Xcells(P＜0.05andP＜0.01).Expressionofc-mycwasmarkedlyhigherinHepG2/pcDNA3-XcellsthaninHepG2andHepG2/pcDNA3cells(P＜0.05andP＜0.01).CONCLUSION:HBVXgenecanimpaircellproliferationcapacity,improvecellapoptosis,andupregulateexpressionofapoptosisfactors.TheinterventionofHBVXgeneontheexpressionofapoptosisfactorsmaybeapossiblemechanismresponsibleforthechangeincellapoptosisandproliferation.

简介：我院放射科自使用数字化多功能X光机进行胃肠道检查以来，共检查1800例，现将初步体会总结报告如下。

简介：AIM:RecombinedplasmidpETNF-P16wasconstructedtoinvestigateitsexpressionpropertiesinesophagealsquamouscarcinomacelllineEC9706inducedbyX-rayirradiationandthefeasibilityofgene-radiotherapyforesophagealcarcinoma.METHODS:RecombinedplasmidpETNF-P16wasconstructedandtransfectedintoEC9706cellswithlipofectamine.ELISA,Westernblot,andimmunocytochemistrywereperformedtodeterminetheexpressionpropertiesofpETNF-P16inEC9706aftertransfectioninducedbyX-rayirradiation.RESULTS:EukaryoticexpressionvectorpETNF-P16wassuccessfullyconstructedandtransfectedintoEC9706cells.TNFαexpressionsweresignificantlyincreasedinthetransfectedcellsafterdifferentdosesofX-rayirradiationthaninthoseafter0Gyirradiation(1192.330-2026.518pg/mL,P<0.05-0.01),andtheTNFαexpressionsandP16weresignificantlyhigher6-48hafter2GyX-rayirradiation(358.963-585.571pg/mL,P<0.05-0.001).NoP16expressionwasdetectedinnormalEC9706cells.However,therewasstrongexpressioninthetransfectedandirradiationgroups.CONCLUSION:X-rayirradiationinductioncouldsignificantlyenhanceTNFαandP16expressioninEC9706cellstransfectedwithpETNF-P16plasmid.Theseresultsmayprovideimportantexperimentaldataandtherapeuticpotentialforgene-radiotherapyofesophagealcarcinoma.

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简介：目的通过内镜超声检查(EUS)结合细针穿刺活检来确定粘膜下病变的起源和性质,并评价这种方法对粘膜下病变诊断的意义.方法经胃镜发现28例食管胃实质性粘膜下病变的患者,对他们进行超声内镜检查,以明确其来源的层次、病变的位置,观察有无淋巴结转移.排除腔外正常组织压迫,在超声内镜导引下对病变行细胞针穿刺活检.结果28例患者中,2例经EUS证实为腔外正常组织压迫,余26例患者均行EUS导此下的细针穿刺活组织检查.3例患者穿刺取材失败.23例患者经细胞学分析显示4例恶性肿瘤(淋巴瘤2例,平滑肌肉瘤2例)及19例良性病变(平滑肌瘤18例,脂肪瘤1例).全部病例20例经手术、1例经内镜电切及7例经临床随访验证.结论EUS结合细针穿刺活检是诊断粘膜下病变安全、有效的方法.

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