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- W2000599573 abstract "Interferons (IFN) are biological molecules with anti-viral, anti-proliferative and immunomodulatory actions. There is evidence that IFN-gamma increases the frequency of exacerbations of multiple sclerosis (MS) whereas IFN-beta may reduce their frequency. Here we present evidence that IFN-beta significantly decreases concanavalin A (Con A)-induced proliferation of peripheral blood mononuclear cells (PBMC) of MS patients and healthy individuals. Similar results were obtained when PBMC were activated through the T cell receptor (TcR) by anti-CD3 monoclonal antibody or independently of it by phorbol ester and Ca2+ ionophore. These effects of IFN-beta were also noted when IFN-gamma and IFN-beta were added together. Furthermore, IFN-beta decreased proliferation when added to cells that were already pre-activated. Activated CD4+ and CD8+ T cells were downregulated to approximately the same extent. Analysis of cytokine production showed that IFN-gamma production by Con A activated PBMC was increased in MS when compared to controls. IFN-beta significantly decreased IFN-gamma production in MS patients and control individuals. Con A activated cultures treated with IFN-beta showed decreased IL2R expression and accumulation of IL2. These results show that IFN-beta decreases T cell activation and IFN-gamma production in vitro, effects that may be beneficial in MS." @default.
- W2000599573 created "2016-06-24" @default.
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- W2000599573 date "1993-07-01" @default.
- W2000599573 modified "2023-09-26" @default.
- W2000599573 title "Interferon β decreases T cell activation and interferon γ production in multiple sclerosis" @default.
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- W2000599573 doi "https://doi.org/10.1016/0165-5728(93)90244-s" @default.
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