简介：AIM:Toconstructanon-resistantandattenuatedSalmonellatyphimurium(S.typhimurium)strainwhichexpressesconservativeregionofadhesionABofHelicobacterpylori(Hpylon)andevaluateitsimmunogenicity.METHODS:TheABgeneamplifiedbyPCRwasinsertedintotheexpressionvectorpYA248containingasdgeneandthroughtwotransformationsintroducedintothedeltaCya1deltaCrp1deltaAsdattenuatedSalmonellatyphimuriumstrain,constructingbalancedlethalattenuatedSalmonellatyphimuriumstrainsX4072(pYA248-AB).BridgedELISAmethodwasusedtomeasuretheexpressionofABantigeninsonicateandculturesupematant.AccordingtothemethoddescribedbyMeacock,stabilityoftherecombinantwasevaluated.Semi-lethalcapacitytestwasusedtoevaluatethesafetyofrecombinant.Theimmunogenicityofrecombinantwasevaluatedwithanimalexperiments.RESULTS:TheattenuatedS.typhimuriumX4072(pYA248-AB)whichexpressesABwassuccessfullyconstructed.Furthermore,bridgedELISAassayshowedthatthecontentofABinrecombinantX4072(pYA248-AB)culturesupematantwashigherthanthatwasinthalluslyticliquor.AndafterrecombinantX4072(pYA248-AB)wasculturedfor100generationswithoutselectionpressure,bheentirerecombinantbacteriaselectedrandomlycouldgrow,andtheABantigenwasdefectedpositivebyELISA.ThegrowthcurveoftherecombinantbacteriashowedthatthegrowthstatesofX4072(pYA248)andX4072(pYA248-AB)werebasicallyconsistent.ThesurvivalrateofC57BL/6wasstill100%,at30daftermicetakingX4072(pYA248-AB)1.0×l0^10cfuorally.OralimmunizationofmicewithX4072(pYA248-AB)inducedaspecificimmuneresponse.CONCLUSION:Invitrorecombinantplasmidappearstobestableandexperimentsonanimalsshowedthattherecombinantstrainsweresafeandimmunogenicinvitro,whichprovidinganewliveoralvaccinecandidateforprotectionandcareofHpyloriinfection.

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.

简介：急性重度有机磷农药中毒（AOPP）的病人多服毒量大，中毒症状重，如不及时抢救，会迅速出现呼吸衰竭、脑水肿、循环衰竭，甚至死亡。为此，我们积极开展了对该类病人的“120”院前急救措施，使病人得到及时而有效的处理，抢救成功率明显提高，现将该工作总结报告如下。

简介：人力资源开发，就是根据人力资源载体的生理和心理特点，运用科学的方法，充分挖掘人力资源的潜力，合理配置人力资源，实现劳动投入和经济投入的高效率。有著名经济学家认为：中国加入WTO后，如何面对人才重重危机，是医院人力资源管理必须接受的考验，国外人力资源开发比较注重以人为本(即人本管理)，突出理解人、尊重人，充分发挥人的主动性和积极性。目前，急救工作在现代社会已显示出其重要地位，由于急救工作特点，使得急救护理人员合理配置和培训成为护理管理难题，本文就本院院前急救护理人员的配制和培训管理进行探讨。

简介：医院文化是医院赖以生存与发展的前提以及作为这个生存与发展的产物的总和。医院文化是医院发展的灵魂，两者相互依存。医院文化的建设和发展过程，也是医院发展树立和创建过程。本文试述在社会主义市场经济提供了公平竞争的环境中，医院文化建设在医院发展中必将起着巨大作用。