Document 0057 DOCN M9590057 TI CD3+/TCR-alpha beta- cells are important in protecting spinal cord tissues against Theiler's virus strain GD VII infection. DT 9509 AU Kohanawa M; Nakane A; Asano M; Minagawa T; Department of Microbiology, Hokkaido University School of; Medicine, Japan. SO Microbiol Immunol. 1995;39(2):123-8. Unique Identifier : AIDSLINE MED/95303030 AB Intravenous infection with Theiler's virus strain GD VII causes acute encephalomyelitis in mice. Endogenous IFN-gamma produced in the spinal cord is important to protect the tissue in mice infected with this virus. Neither CD4+ cells nor CD8+ cells infiltrated the spinal cords of infected mice until Day 9 postinfection. However, the number of CD3+/TCR-gamma delta+ cells increased in the spinal cords of mice infected with the virus. These cells resided in the spinal cords of normal mice, and produced IFN-gamma as a result of stimulation by immobilized anti-CD3 mAb. Elimination of CD3+ cells by the administration of a specific mAb augmented viral replication and suppressed production of endogenous IFN-gamma. Depletion of TCR-alpha beta+ cells and ASGM1+ cells did not affect the viral replication, and did not alter the production of IFN-gamma. Therefore, CD3+/TCR-alpha beta- cells producing IFN-gamma play an important role in the protection of the spinal cord against Theiler's virus infection. These results suggest that CD3+/TCR-alpha beta- cells might be identical to TCR-gamma delta+ cells. DE Animal Antibodies, Monoclonal/THERAPEUTIC USE Antigens, CD/ANALYSIS Antigens, CD3/*IMMUNOLOGY CD4-Positive T-Lymphocytes/IMMUNOLOGY CD8-Positive T-Lymphocytes/IMMUNOLOGY Female Flow Cytometry Hamsters Interferon Type II/BIOSYNTHESIS Leukocytes, Mononuclear/IMMUNOLOGY/METABOLISM Mice Mice, Mutant Strains Poliomyelitis/*IMMUNOLOGY/MICROBIOLOGY Polioviruses, Murine/CLASSIFICATION/*GROWTH & DEVELOPMENT Receptors, Antigen, T-Cell, alpha-beta/*IMMUNOLOGY Spinal Cord/CYTOLOGY/*IMMUNOLOGY/MICROBIOLOGY Virus Replication JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).