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1、J.Comp.Path.1998Vol.119,114FatalEnteritisAssociatedwithCoronavirusInfectioninCatsA.Kipar,J.Kremendahl,D.D.Addie*,W.Leukert,C.K.GrantfandM.ReinacherInstitutfurVeterindr-Pathologie,UniversitdtLeipzig,Margarete-Blank-Strasse4,04103Leipzig,Germany,*DepartmentofVeterinaryPathology,UniversityofGlasgow,
2、BearsdenRoad,Glasgow,G61IQH,UK,and'CustomMonoclonalsInternational,813HarborBoulevard248,WestSacramento,CA95691,USASummaryThisreportdescribesfivecasesofnaturallyoccurringfelinecoronavirusenteritis.Theaffectedanimals,aged2monthsto7years,hadaclinicalhistoryofintestinalsymptoms,includingdiarrhoeaorv
3、omiting,orboth.Theyexhibitedvariablehistologicalchangesintheepitheliumofthesmallintestine,rangingfromdegenerationofsinglecellsanddetachmentofgroupsofcellsfromthevilloustipstoregenerativeprocessesofthecryptepithelia.Post-mortemdiagnosiswasbasedontheimmunohistochemicaldemonstrationofcoronavirusanti
4、genwithinintestinalepithelialcellsandontheelectronmicroscopicaldemonstrationofcoronavirusparticlesinthefaeces.Inaddition,oneanimalwasimmunohistochemicallypositiveforantigensoffelineleuk•aemiavirus(FeLV)andexhibitedintestinalchangesconsistentwithFeLV-associatedenteritis.Twocatsweretestedserologica
5、llyforfelineim•munodeficiencyantibodies,withnegativeresults.Thefindingsindicatethatnaturalcoronavirusinfectionisapotentialcauseofsevereenteritisinjuvenileandadultcats.©1998W.B.SaundersCompanyLimitedIntroductionFelineentericcoronavirus(FECV),apotentiallyenteropathogenicubiquitousfelinecoronavirus,
6、andfelineinfectiousperitonitisvirus(FIPV)areregardedastwovirulencevariantsoffelinecoronavirus(FCoV)(PedersenandFloyd,1985;FiscusandTeramoto,1987a,b;Herreweghetat.,1995b).UnlikeFIPVinfection,FECVinfectionisnotregardedasfatal(Evermannetal.,1991;Pedersen,1995).FCoVisspreadbythefaecal-oronasalroute(H
7、oshinoandScott,1980a;Pedersenetai,1981a;Hayashietai,1982;Stoddartetal,1988;Herreweghetal,1995a;Pedersen,1995;Vennemaetal,1995;Addieetal.,1996;Polandetai,1996).Informationonfelinecoronavirusenteritishasbeengainedmainlyb