Abstract
The purpose of the present investigation is to study renal injury by monthly viral inoculation into mice, using several different types of strains of enterovirus. A group of mice were inoculated intravenously with five different serotypes of group B coxsackieviruses (CB1 to CB5), once a month from 1 to 5 months of age and sacrificed monthly from 6 to 12 months of age. Mesangial proliferation and PAS-positive mesangial deposits in light microscopy and electron-dense deposits in electron microscopy were observed at maximum from 6 to 7 months of age. The CB viral RNA detected by in situ hybridization were observed in the mesangial lesion. By immunofluorescence findings, positive findings for IgG and IgA were observed. These results demonstrated that intermittent intravenous inoculation with different serotypes CB in mice provoked pathological changes closely resembling those in human proliferative glomerulonephritis. Moreover, the detection of CB viral RNA in glomerular lesions suggested that renal injury was induced by immune complexes correlated with CB viral replication in renal tissues.
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