简介:Livertransplantation(LT)isalife-savingtreatmentforpatientswithend-stageliverdiseaseandforpatientswithlivercellcancerrelatedtoliverdisease.Acuteandchronicliverdiseasesrelatedtohepatitisvirusesarebetweenthemainindicationsforlivertransplantation.Theriskofviralreinfectionaftertransplantationisthemainlimitingfactorintheseindications.Beforetheavailabilityofantiviralprophylaxis,hepatitisBvirus(HBV)recurrencewasuniversalinpatientswhowereHBVDNA-positivebeforetransplantation.ThenaturalhistoryofrecurrentHBVwasacceleratedbyimmunosuppression,anditprogressedrapidlytograftfailureanddeath.Introductionofpost-transplantprophylaxiswithimmunoglobulinalonefirst,andassociatedtoantiviraldrugslater,drasticallyreducedHBVrecurrence,resultinginexcellentlong-termoutcomes.Onthecontrary,recurrenceofhepatitisCisthemaincauseofgraftlossinmosttransplantprograms.Overall,patientandgraftsurvivalafterLTforhepatitisCvirus(HCV)-associatedcirrhosisisinferiorcomparedwithotherindications.However,successfulpretransplantorposttransplantantiviraltherapyhasbeenassociatedwithincreasedgraftandoverallsurvival.Untilrecently,thecombinationofpegylatedinterferonandribavirinwasthestandardofcareforthetreatmentofpatientswithchronichepatitisC.Highlyactiveantiviralcompoundshavebeendevelopedoverthepastdecade,thankstonewinvitrosystemstostudyHCVentry,replication,assembly,andrelease.
简介:材料和方法一、标本收集我院及协作单位病理科1986年/1996年胆囊良、恶性病变手术切除标本,HE染色确诊,胆囊腺癌38例,(高分化18例,低分化8例,未分化8例,粘液腺癌4例),胆囊粘膜上皮异型增生24例(轻度8例,中度6例,重度10例),另取20例正常胆囊粘膜标本作对照.
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.