简介:Objective:Tostudytheroleofmonocytesinthepathogenesisofgenitalherpes.Methods:TNF-aandIL-6levelsin27casesofgenitalherpesweredetectedbyenzymelinkedimmunosorbantassay(ELISA).HLAclassⅡantigenexpressiononmonocytesweredetectedbyanalkalinephosphataseanti-alkalinephosphatasemethod.Results:Comparedwithnormalcontrols,levelsofTNF-aandIL-6secretedbymonocytesrespondingtoLPSmitogeninvitroweresignificantlydecreased[(3.13±0.44ng/ml)vs(4.68±0.54ng/ml),P<0.05and(3.32±1.06ng/ml)vs(6.46±1.94ng/ml),P<0.05,respectively].HLAclassⅡantigenexpressiononmonocytesinthegenitalherpesgroupwasalsosignificantlydecreased[HLA-DR(67.48%±1.51%)vs(81.03%±1.32%),P<0.01andHLA-DQ(29.54%±1.15%)vs(37.63%±1.79%),P<0.01respectively].Conclusion:Thesefindingssuggestthatthedecreasedmonocytefunctionmaycontributetothepathogenesisofgenitalherpes.Augmentingorinducingmonocytefunctionmaybeimportantintheprevention,treatment,andreductionofgenitalherpescases.
简介:摘要目的探讨白细胞介素-8(IL-8)和肿瘤坏死因子-a(TNF-a)在慢性阻塞性肺疾病(COPD)发病机制中的作用。方法收集34例急性加重期、34例缓解期COPD患者和20名健康者的血清,采用酶联免疫吸附法测定血清中IL-8和TNF-a。结果COPD急性加重期组及缓解期组血清IL-8和TNF-a水平明显高于健康对照组,急性加重期组又明显高于缓解期组,差异有显著性(P<0.O5),急性加重期组IL-8和TNF-a呈正相关(r=0.617,P<0.05)。结论IL-8和TNF-a共同参与了COPD气道炎症反应与COPD的发病有关。
简介:目的观察灵孢多糖对脂多糖诱导的小胶质细胞激活的影响及对TNF-amRNA和iNOSmRNA表达的影响。方法建立中脑原代小胶质细胞的培养,用灵孢多糖预处理30min,再加入脂多糖处理24h,通过免疫组化检测OX-42的阳性细胞数及RT-PCR检测TNF-amRNA和iNOSmRNA的表达。结果激活的小胶质细胞体积增大.细胞数量增多.TNF-amRNA和iNOSmRNA表达增高,但经较大剂量灵孢多糖(100μg/mL,300μg/mL)预处理后,小胶质细胞的激活被抑制,且总的细胞数量显著减少(P〈0.01),TNF-amRNA和iNOSmRNA表达量也降低(P〈0.01)。结论灵孢多糖可以减少TNF-amRNA和INOSmRNA的表达,可能是由于灵孢多糖的预处理阻断了由脂多糖诱导的小胶质细胞的激活,提示灵孢多糖可能对中脑多巴胺能神经元具有保护作用。
简介:Aim:Tostudytheeffectofprothymosinα(ProTα)asafusionproteinonthesecetionofINF-γ,IFN-αandTNF-αinvitro.Methods:Theinvitrostudywascarriedoutontheculturedofsplenocytes,splenicandperitonealmacrophagesisolatedfromBalb/cmice.SplenocyteswereincubatedwithvariousconcentrationsofProTα(1×10^-7-1×10^-10mol·L^-1)withorwithoutConA(5μg·mL^-1)for72h.SplenicandperitoealmacrophageswererespectivelytreatedwithProTα(1×10^-7-1×10^-10mol.L^-1)inthepresenceofLPS(10μg·mL^-1)for24h.ThenINF-γ′s,INF-α′sandTNF-α′slevelsinthesupernatantweredetecedbyELISA,Results:ProTα(1×10^-7)mol.L^-1)wasfoundtoobviouslyincreaseINF-γlevel(P<0.05)inthesupernatantofsplenocytescomparedwiththecontrolgroup.Moreover,ProTα(1×10^-7mol.L^-1)significantlyinducedthesecretionofINF-α(P<0.01)andTNF-α(P<0.01)insplenicandperitonealmacrophages.Conchusion:Invitro,ProTαcouldincreasethesecretionofIFN-γ,IFN-αandTNF-α.
简介:Ahallmarkofallformsofneurodegenerativediseasesisimpairmentofneuronalfunctions,andinmanycasesneuronalcelldeath.Althoughtheetiologyofneurodegenerativediseasesmaybedistinct,differentdiseasesdisplayasimilarpathogenesis,forexampleabnormalimmunitywithinthecentralnervoussystem(CNS),activationofmacrophage/microgliaandtheinvolvementofproinflammatorycytokines.Recentstudiesshowthatneuronsinaneurodegenerativestateundergoahighlyregulatedprogrammedcelldeath,alsocalledapoptosis.TNF-relatedapoptosis-inducingligand(TRAIL),amemberoftheTNFfamily,hasbeenshowntobeinvolvedinapoptosisduringmanydiseases.Asonememberofadeathligandfamily,TRAILwasoriginallythoughttotargetonlytumorcellsandwasnotpresentinCNS.However,recentdatashowedthatTRAILwasunregulatedinHIV-1-infectedandimmune-activatedmacrophages,amajordiseaseinducingcellduringHIV-1-associateddementia(HAD).TRAILisalsoinducedonneuronbyβ-amyloidprotein,animportantpathogenforAlzheimer'sdisease.Inthisreview,wesummarizethepossiblecommonaspectsthatTRAILinvolvedthoseneurodegenerativediseases,TRAILinducedapoptosissignalingintheCNScells,andspecificroleofTRAILinindividualdiseases.Cellular&MolecularImmunology.2005;2(2):113-122.
简介:目的观察脑梗死患者内皮细胞舒张因子(EDRF),血管性假血友病因子(vWF)及肿瘤坏死因子(TNF)血浆中的含量。方法测定42例急性期脑梗死患者,38例恢复期脑梗死患者及40例正常人血浆EDRF、vWF、TNF含量,并分析其相互关系。结果(1)急性期脑梗死患者vWF、TNF较对照组明显升高(P〈0.01)。EDRF明显降低(P〈0.01)。(2)大梗死组与小梗死组相比较,vWF、TNF水平升高和EDRF水平下降均有显著差异(P〈0.01)。(3)急性期脑梗死患者vWF升高与TNF呈正相关(r=0.72、P〈0.01),vWF升高与E.DRF呈负相关(r=-0.74,P〈0.01)。(4)恢复期脑梗死患者vWF、TNF及EDRF与对照组比较,无显著差异(P〉0.05)。结论急性脑梗死患者存在内皮细胞损伤和功能障碍。
简介:ObjectivesToelucidatethepotentialroleofcytokinesinthepathogenesisofcoronaryheartdisease(CHD).MethodsTNF-αandIFN-γactivity,IL-8levelsofplasmaandsupernatantsweremeasuredin62patientswithCHDand30healthcontrolsbymethodsofdirectcytotoxicityassay,cytopathiceffectinhibitiontestandELISArespectively.ResultsBothTNF-αactivityandIL-8levelsofplasmainCHDpatientswerehigherandIFN-γactivityofsupernatantsinCHDpatientswerelowerthanthoseofhealthycontrols(P<0.001),TherehavesignificantdifferencesbetweenhealthycontrolsandthesubgroupsofCHD(P<0.01).IL-8levelsofplasmaincreasedwiththeadvancingofthediseaseandtherehaveobviousdifferencesamongsubgroupsoftheillness(P<0.05).TNF-αactivityofplasmainstableanginapectoris(SAP)subgroupwaslowerthanthoseofunstableanginapectoris(UAP)andacutemyocardialinfarction(AMI)subgroups,thedifferencesbetweenSAPandUAPorAMIweresignificant(P<0.05),ButtherehavenosignificantdifferencesbetweenUAPandAMI(P>0.05).However,IFN-γactivityofsupernatantsshowednodifferenceamonganysubgroups.ConclusionstherehavecloserelationsbetweenTNF-α,IFN-γ,IL-8andCHD.
简介:Objectiwe:InordertodetecttheroleofmonocytesinHSV-2infection,westudiedtheeffectofherpessim-plexVirus-2infectionontheproductionoftumorne-crosisfactor(TNF-α),interleukin-6(IL-6)secretedbymonocytes.Methods:MonocyteswereinfectedbyHSV-2(333Strain).Culturesupernatantswerecollectedat1,3,5,7dayspost-infection.ThelevelsofTNF-α,IL-6weremeasuredbyenzyme-linkedimmunosorbentas-say(ELISA).Results:ThelevelsofTNF-αsecretionbymono-cytessignificantlydecreasedonfirstdaypost-infection.ThelevelsofIL-6significantlydecreasedonfirstandthirddayspost-infection,andthengradu-allyincreasedtothecontrolonseventhdaypost-infection.Conclusions:TNF-αandIL-6productionbymono-cyteswasinhibitedduringHSV-2infection.Thepro-ductionofcytokinesmayplayanimportantroleinherpessimplexviurs-2pathogenicityandimmunity.