简介：AIMToexploretheprotectiveeffectsandunderlyingmechanismsoftotalpolysaccharidesoftheSijunzidecoction(TPSJ)ontheepithelialbarriersinvitro.METHODSCaco-2cellmonolayersweretreatedwithorwithoutTPSJinthepresenceorabsenceofTNF-α,andparacellularpermeabilityandtransepithelialelectricalresistance(TEER)weremeasuredtoevaluatetheepithelialbarrierfunction.Immunofluorescenceandwesternblottingwererespectivelyusedtoevaluatethedistributionandexpressionofthetightjunctionproteinsclaudin1,claudin2,zo3,andoccludininCaco-2cells.Westernblottingwasalsousedtoevaluatethecellularexpressionofmyosinlightchain(MLC),phosphorylatedMLC(pMLC),MLCkinase(MLCK),andnuclearfactor(NF)-κBp65.RESULTSTPSJpromotedtheproliferationofCaco-2cellsandinhibitedTNF-α-inducedsecretionofpro-inflammatorycytokines.Furthermore,TPSJsignificantlyamelioratedboththereductionofTEERandtheincreasedparacellularpermeabilityobservedintumornecrosisfactor(TNF)-α-damagedCaco-2monolayers.Furthermore,TPSJremarkablyattenuatedTNF-α-inducedmorphologicalchanges,downregulatedtheexpressionofclaudin1,claudin2,zo3,andoccludin,andmarkedlysuppressedTNF-α-mediatedupregulationofp-MLCandMLCKexpression.Finally,TPSJinhibitedtheactivationandexpressionofNF-κBp65.CONCLUSIONOurresultsdemonstratethatTPSJalleviatestheTNF-α-inducedimpairmentoftheintestinalepithelialcellbarrierfunctionbysuppressingNF-κBp65-mediatedphosphorylationofMLCKandMLC.

简介：以质子泵抑制剂（PPI）为基础的三联疗法的幽门螺杆菌（H．pylori）根除率不尽相同，可能与细胞色素P450（CYP）2C19基因多态性有部分关联。目的：研究CYP2C19基因多态性对亚洲人群中以PPI为基础的三联疗法H．pylori根除率的影响。方法：在PubMed、EMBASE、CNKI和万方数据中进行系统文献检索，以RevMan4．2．8软件行荟萃分析。结果：共17篇文献纳入荟萃分析。不考虑PPI类型，CYP2C19弱代谢型（PM）与杂合子强代谢型（HetEM）之间、PM与纯合子强代谢型（HomEM）之间、HetEM与HomEM之间H．pylori根除率均有显著差异（PM对HetEM：OR=1．75，95％CI1．24—2．47．舟0．002；PM对HomEM：OR=2．82，95％CI1．73～4．60，P〈0．0001；HetEM对HomEM：OR=1．84，95％CI1．33-2．57，P=-0．0003）。在以奥美拉唑或兰索拉唑为基础的三联疗法中，PM与HomEM之间、HetEM与HomEM之间且pylori根除率均有显著差异（含奥美拉唑方案PM对HomEM：OR=4．37，95％CI1．86—10．26．P=0．0007，HetEM对HomEM：OR=3．15,95％CI1．75—5．66，P=0．0001；含兰索拉唑方案PM对HomEM：OR=3．06．95％CI1．56-6．00。P=0．001。HetEM对HomEM：OR=1．95，95％CI1．03～3．70，P=0．04）。在以雷贝拉唑为基础的三联疗法中，PM、HetEM、HomEM三组间H．pylori根除率均无明显差异。结论：在亚洲人群中，以奥美拉唑和兰索拉唑为基础的三联疗法．其H．pylori根除率受CYP2C19基因多态性影响，以雷贝拉唑为基础的三联疗法则否。