Studies on the persistent infection with measles virus in HeLa cells. I. Clonal analysis of cells of carrier cultures.
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Biomedical subjects
Publications and source records attributed to T Minagawa.
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Theiler's virus GD VII strain causes acute encephalomyelitis by intracerebral inoculation. We established acute encephalomyelitis in mice by the intravenous (i.v.) inoculation of Theiler's virus GD VII strain. Replication of Theiler's virus injected i.v. could be observed in both the brain and spinal cord of mice, and interferon (IFN)-gamma could be detected in the extracts of brain and spinal cord in parallel with viral replication. Furthermore, by the injection of anti-IFN-gamma monoclonal antibody (mAb) on Day 1 post-infection (p.i.), mortality and virus titres in the spinal cord increased compared with the control mice treated with normal rat globulin. The histological exacerbation of inflammation was observed in spinal cord of anti-IFN-gamma mAb-treated mice. These results indicate that endogenous IFN-gamma, produced locally in the brain and spinal cord of mice through both antiviral action and anti-inflammatory action of IFN-gamma in central nervous system, plays an important role in Theiler's virus infection.