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1、65PATHOGENESISOFCORONAVIRUS-INDUCEDINFECTIONSReviewofPathologicalandImmunologicalAspectsS.PerlmanDepartmentofPediatricsandMicrobiologyandInterdisciplinaryPrograminImmunologyUniversityofIowaIowaCity,Iowa522421.ABSTRACT:MODELSOFCORONAVIRUSPATHOGENESISCorona
2、virusesandarterivirusesinfectmultiplespeciesofmammals,includinghu?mans,causingdiseasesthatrangefromencephalitistoenteritis.Severalofthesevirusesinfectdomesticanimalsandcausesignificantmorbidityandmortality,leadingtomajoreconomiclosses.Inthiscategoryareinc
3、ludedsuchpathogensastransmissiblegastroen?teritisvirus,porcinerespiratoryandreproductivevirusandinfectiousbronchitisvirus.Thefelinecoronaviruses(FECV)generallydonotcauseinfectionswithhighmorbiditybutinasmallpercentageofcases,thevirusmutatestobecomemorevir
4、ulent.Thisvirus,felineinfectiousperitonitisvirus(FIPV),causesseverediseaseinyoungcats.Thisdiseaseisinlargepartimmunopathologicalandunderstandingitisamajorgoalofcoronavirusre?search.2.INTRODUCTIONTOMHV-INDUCEDNEUROLOGICALDISEASEThemostcommonlystudiedcorona
5、virusismousehepatitisvirus(MHV),inpartbe?causethenaturalhostforthisinfection,themouse,ismoreeasilymanagedinthelabora?tory.Although,asillustratedthroughoutthissymposium,muchprogresshasbeenmadeinunderstandingthepathogenesisoftheinfectionsdescribedabove,this
6、reviewwillconcen?trateonMHVandinparticular,theneurotropicstrainsofthisvirus.Thefirststrainofmousehepatitisviruswasisolatedin1947fromaparalyzedmouseinacolonyofSwissCoronavirusesandArteriviruses,editedbyEnjuanesetal.PlenumPress,NewYork,1998503504S.Perlmanwh
7、itemiceatHarvardMedicalSchool(Cheever,etaI.,1949).Thisvirusinitiallycausedhindlimbparalysis,butonrepeatedpassagethroughmice,morevirulentvariants,whiehpredominantlycausedencephalitiswereselected.ThisviruswasnamedtheJHMvirus(JHMV)andsubsequentlyshowntobeaco
8、ronavirus,relatedtootherMHVstrains.TheinfectioncausedbythisviruswasnotextensivelyinvestigateduntilWeinerdescribedastudyinwhichJHMV-induceddemyelinationwasanalyzed(Weiner,1973).JMHVisnowusedinmanylaboratoriestostudyv