Host age and genotypic effects on enterotropic mouse hepatitis virus infection - PubMed (original) (raw)
- PMID: 3035277
Host age and genotypic effects on enterotropic mouse hepatitis virus infection
S W Barthold. Lab Anim Sci. 1987 Feb.
Abstract
Intestinal lesions due to infection with an enterotropic strain of mouse hepatitis virus (MHV-Y) were found to be more severe and wide-spread in BALB/cByJ and Cr1:CD-1(ICR) mice than in SJL mice inoculated at 1 week of age, using nonparametric ranking analysis. Lesions and viral antigen were limited largely to the bowel, but also occurred in the liver and brain of some mice. BALB/cByJ mice developed a particularly high prevalence of brain infection, resulting in mortality after the enteric phase of infection had ceased. MHV-Y antigen was present in neurons, glia and vascular endothelium in a vascular distribution. Cr1:CD-1(ICR) pups inoculated with MHV-Y at 4 or 7 days of age developed severe typhlocolitis, enteritis and encephalitis with moderate mortality. Pups infected at 2 or 3 weeks of age had mild intestinal lesions with minimal alteration of mucosal architecture, no encephalitis and no mortality. These results demonstrate that host age and genotype influence the course of enterotropic mouse hepatitis virus, as has been shown previously with non-enterotropic, respiratory-type strains of mouse hepatitis virus.
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