資源描述：
《冠狀病毒Coronavirusl論文-1989 Virus strain specificity of challenge immunity to coronavirus.pdf》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、ArchVirol(1989)104:187-196VirologyArchives?bySpringer-Verlag1989VirusstrainspecificityofchallengeimmunitytocoronavirusS.W.BartholdandAbigailL.SmithSectionofComparativeMedicine,YaleUniversitySchoolofMedicine,NewHaven,Connecticut,U.S.A.AcceptedDecember5,1988Summary.Theresistance
2、ofimmunizedmicetochallengewiththesameoradifferentstrainofmousehepatitisvirus(MHV)wasexaminedasamodelofchallengeimmunitytocoronavirusinfection.GeneticallysusceptibleBALB/cByJmiceweregivenanintranasalimmunizinginfectionofrespiratory-typeMHV-JHM,MHV-S,orenterotropicMHV-Y.Controlm
3、iceweresham-im-munizedwithsteriletissueculturefluid.Recoveredmicewerechallengedin-tranasallywithMHV-JHM,MHV-Sorsteriletissueculturefluidat30daysafterimmunization.Resistancetochallengeinoculationwasevaluatedingroupsofmiceat4and30daysafterchallenge.At4days,theprevalenceofMHVlesi
4、onsinnoseandliverwastabulatedandMHVtitersinliverweredetermined.At30days,theprevalenceofresidualbrainstemspongiformlesionswastab-ulatedandserumantibodytoMHV-JHMandMVH-Swasquantifiedbyenzymeimmunoassay.MiceimmunizedwithMHV-JHMorMHV-SresistedchallengewiththeMHVhomotype,butMHV-S-i
5、mmunizedmicewerefullysusceptibletochallengewithMVH-JHM.MiceimmunizedwithenterotropicMHV-Ywereonlypartiallyprotectedagainstchallengewithantigenicallyre-lated,butbiologicallydifferentMHV-S.SerumantibodyresponsestoMHVsupportedtheseobservations.Thesedataindicatethatchallengeimmuni
6、tytocoronavirusesisstrong,buthighlyvirusstrain-specific.IntroductionCoronavirusesarecommonrespiratoryandentericpathogensofavarietyofbirdsandmammals,includingman.About15%ofcommoncoldsinmanarecausedbycoronaviruses[25].Thefrequencyofrepeatedcoldsinasingleindividualandthefrequency
7、ofassociationwithacoronaviraletiologysuggestthatanindividualcanberepeatedlyinfectedwithcoronaviruses.Ifso,hostimmunityisineffective,oreffectivelydirectedtowardvirusstrain-specificanti-gens.Mousehepatitisvirus(MHV)isanextensivelystudiedcoronavirusthatmightprovideinsightintothem
8、echanismofthisphenomenon.Thisvirusisrepresentedbymanydifferen
