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- W1514271462 abstract "Abstract MRL-lpr/lpr mice spontaneously develop massive T cell lymphadenopathy, autoantibodies, and immune-mediated pathology. These mice are thought to be models of various human autoimmune diseases, including systemic lupus, Sjogren's syndrome, and rheumatoid arthritis. We have used cyclosporin A (CS-A) treatment as a tool by which the mechanisms of immune-mediated pathology might be dissected. CS-A was used because of its known preferential inhibition of T cell function and the marked expansion in MRL-lpr/lpr mice of an unusual L3T4-, Lyt-2-, 6B2+ T cell population. CS-A prevented lymphadenopathy and expansion of L3T4-, Lyt-2-, 6B2+ T cells in the peripheral lymph nodes, and also in the thymus. The increased expression of the c-myb and T cell receptor beta-chain genes associated with these unusual cells was also corrected. The finding of increased numbers of L3T4-, Lyt-2-, 6B2+ thymocytes in untreated mice suggests abnormal intrathymic differentiation in lpr/lpr mice, a defect that was corrected by CS-A. Treated mice had a marked decrease in arthritis and glomerulonephritis and significantly prolonged survival. These beneficial effects of CS-A occurred despite a lack of reduction in antibodies reactive with DNA, circulating immune complexes, rheumatoid factor titers, or immunoglobulin concentrations. These results demonstrate that the B cell hyperactivity of MRL-lpr/lpr mice can proceed without the T cell proliferative disease." @default.
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- W1514271462 date "1987-01-01" @default.
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- W1514271462 title "CS-A therapy in MRL-lpr/lpr mice: amelioration of immunopathology despite autoantibody production." @default.
- W1514271462 doi "https://doi.org/10.4049/jimmunol.138.1.157" @default.
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