简介:目的探讨Dieulafoy病的诊断与治疗。方法对近年来15例Dieulafoy病临床和内镜资料进行分析。结果内镜治疗7例,其中注射高渗盐水或硬化剂5例,射频治疗2例,均立即止血,其中l例再次出血死亡。手术7例,均治愈。结论内镜治疗是Dieulafoy病主要治疗方法,其中射频治疗效果尚属满意,但需进一步观察总结经验。手术治疗可彻底解决血管畸形问题,仍为重要治疗手段。
简介:Ithasbeenfoundthatexpressionof15-lipoxygenasc-1(15-LOX-1)anditsmainproduct,13-C-hydroxyoctadecadienoicacid(13-S-HODE),aredecreasedinhumancolorectalandesophagealcancersandthatnonsteroidalanti-inflammatorydrugs(NSAIDs)cantherspeuticallyinduce15-LOC-1expressiontotriggerapoptosisinthosecancercellsindependentlyCOX-2.WefoundthataspecificCOX-2inhibitorSC-236similarlyinduceapoptosisingastriccancercells,althoughthemechanismsoftheseeffectsremaintobedefined.Inthepresentstudy,wetestedwhetherSC-236inducedapoptosisthroughup-regulationof15-LOX-1ingastriccancercells.Wefoundthat,(a)SC-236inhibitedgrowthofgastriccancercellsmainlybyapoptosisinduced;(b)SC-236induced15-LOX-1expressionandincreasedendogenous13-S-HODEproduct,insteadof15-S-HETEduringapoptosisingastriccancercellswithout15-LOX-1expressionbeforetreatmentbySC-236;(c)sc-236didn'teffectexpressionofCOX-1,COX-2,5-LOXand12-LOX;and(d)15-LOX-1inhibitionsuppressedSC-236inducedapoptosis.ThesefindingsdemonstratedthatSC-236inducedapoptosisingastriccancercellsviaup-regulationof25-LOX-1.Theyalsosupporttheconceptthatthelossoftheproapopoticroleof15-LOX-1inepithelialcancersisnotlimitedtohumancolorectalandesophagealcancers.
简介:AIM:Todeterminewhetherischemicpreconditioning(IP)affectsthedevelopmentofedematouscerulein-inducedpancreatitisandtoassesstheroleofcyclooxygenase-1(COX-1),COX-2,andheatshockprotein70(HSP70)inthisprocess.METHODS:InmaleWistarrats,IPwasperformedbydampingofceliacartery(twicefor5minat5-minintervals).ThirtyminutesafterIPorshamoperation,acutepancreatitiswasinducedbycerulein.ActivityofCOX-1orCOX-2wasinhibitedbyresveratrolorrofecoxib,respectively(10mg/kg).RESULTS:IPsignificantlyreducedpancreaticdamageincerulein-inducedpancreatitisasdemonstratedbytheimprovementofpancreashistology,reductioninserumlipaseandpoly-Cribonucleaseactivity,andserumconcentrationofpro-inflammatoryinterleukin(IL)-1β.Also,IPattenuatedthepancreatitis-evokedfallinpancreaticbloodflowandpancreaticDNAsynthesis.Serumlevelofanti-inflammatoryIL-10wasnotaffectedbyIP.Cerulein-inducedpancreatitisandIPincreasedthecontentofHSP70inthepancreas.MaximalincreaseinHSP70wasobservedwhenIPwascombinedwithcerulein-inducedpancreatitis.InhibitionofCOXs,especiallyCOX-2,reducedtheprotectiveeffectofIPinedematouspancreatitis.CONCLUSION:OurresultsindicatethatIPreducespancreaticdamageincerulein-inducedpancreatitisandthiseffect,atleastinpart,dependsontheactivityofCOXsandpancreaticproductionofHSP70.
简介:目的探讨热休克蛋白70(HSP70)、p53和增殖细胞核抗原(PCNA)在肝细胞癌(HCC)组织中的表达及其意义。方法采用免疫组化法检测正常人、慢性乙型肝炎、肝硬化和HCC肝或癌组织HSP70、p53和PCNA的表达情况。结果HCC组织HSP70、p53和PCNA表达阳性率明显高于非癌组织(x1^2=27.16x2^2=67.6,x3^2=40.6,P〈0.01);HSP70在正常人、慢性乙型肝炎、肝硬化和HCC中的表达逐步增强;HSP70和p53在分化较好的HCC中的阳性率明显低于分化不良者(x1^2=6.8,P1〈0.01x2^2=6.1,P2〈0.05),而PCNA表达与HCC组织分化程度无关(x2=2.4,P〉0.05);HSP70表达强度与p53和PCNA表达关系密切(x1^2=41.3,x2^2=41.4,P〈0.01)。结论HCC是HSP70高表达肿瘤。HSP70表达与p53和PCNA表达密切相关,因而在HCC发生和发展中起重要作用。
简介:AIM:Heatshockprotein(HSP)70isover-expressedinhumangastriccancerandplaysanimportantroleintheprogressionofthiscancer.WeinvestigatedtheeffectsofantisenseHSP70oligomeronhumangastriccancercelllineSGC-7901,anditspotentialroleingenetherapyforthiscancer.METHODS:HumangastriccancercelllineSGC-7901wastreatedinvitrowithvariousconcentrationsofantisenseHSP70oligonucleotidesatdifferentintervals.Growthinhibitionwasdeterminedaspercentagebytrypanbluedyeexclusiontest.ExtractedDNAwaselectrophoresedonagarosegel,anddistributionofcellcycleandkineticsofapoptosisinductionwereanalyzedbypropidiumiodideDNAincorporationusingflowcytometry,whichwasalsousedtodetecttheeffectsofantisenseoligomerpretreatmentonthesubsequentapoptosisinducedbyheatshockinSGC-7901cells.ProteinswereextractedforsimultaneousmeasurementofHSP70expressionlevelbySDS-PAGEWesternblotting.RESULTS:Thenumberofviablecellsdecreasedinadoseandtime-dependentmanner,andladder-likepatternsofDNAfragmentswereobservedinSGC-7901cellstreatedwithantisenseHSP70oligomersataconcentrationof10μmol/Lfor48hor8μmol/Lfor72h,whichwereconsistentwithinter-nucleosomalDNAfragmentation.Flowcytometricanalysisshowedadose-andtime-dependentincreaseinapoptoticratebyHSP70antisenseoligomers.ThisresponsewasaccompaniedwithadecreaseinthepercentageofcellsintheG1andSphasesofthecellcycle,suggestinginhibitionofcellproliferation.Inaddition,flowcytometryalsoshowedthatpretreatmentofSGC-7901cellswithHSP70antisenseoligomersenhancedthesubsequentapoptosisinducedbyheatshocktreatment.WesternblottingdemonstratedthatHSP70antisenseoligomersinhibitedHSP70expression,whichprecededapoptosis,andHSP70wasundetectableattheconcentrationof10μmol/Lfor48hor8μmol/Lfor72h.CONCLUSION:AntisenseHSP70oligomerscanabrogateHSP70expressioninSGC-7901cells,wh
简介:目的探讨联合应用埃索美拉唑镁、铝碳酸镁和伊托比利治疗胃食管反流病(gastroesophagealrefluxdisease,GERD)的临床疗效。方法将83例GERD病人随机分为A组和B组,分别采用埃索美拉唑镁、铝碳酸镁及伊托比利和奥美拉唑、铝碳酸镁及伊托比利治疗。3周后评价临床疗效,6周后评价胃镜下有效率。结果治疗3周后A组和B组病人临床症状总改善率分别是92.9%和73.2%,差异有统计学意义(P〈0.05)。治疗6周后A组和B组病人胃镜下有效率分别是97.6%和80.5%,差异有统计学意义(P〈0.05)。结论埃索美拉唑镁、铝碳酸镁和伊托比利治疗GERD优于奥美拉唑、铝碳酸镁及伊托比利。