title: Increased in vitro induced CD4+ and CD8+ T cell IFN-gamma and CD4+ T cell IL-10 production in stable relapsing multiple sclerosis.
abstract: Multiple sclerosis (MS) is presumed to be a T-cell mediated chronic inflammatory disease of the central nervous system. Investigators previously demonstrated increased IFN-gamma (pro-inflammatory) and IL-10 (counterregulatory anti-inflammatory) in MS. The balance of pro-inflammatory and counterregulatory anti-inflammatory cytokines may be important in the stabilization of disease activity. Purified CD4+ and CD8+ T cells from patients with clinically definite, stable relapsing MS (RRMS) were stimulated by anti-CD3 mAb or Con A for 48 hours and cytokine supernatants analysed for production of IL-2, IL-6, IFN-gamma, TNF-alpha (potential pro-inflammatory) and IL-4, IL-10, and TGF-beta (potential counterregulatory anti-inflammatory). Con A activated CD4+ and CD8+ T cell proinflammatory cytokine IL-2 secretion, CD4+ T cell IL-6 secretion, CD4+ and CD8+ T cell TNF-alpha secretion and CD8+ T cell IFN-gamma secretion was decreased significantly in RRMS subjects compared to controls. CD3 activated CD4+ and CD8+ T cell IL-6 secretion and CD4+ T cell TNF-alpha secretion was significantly decreased in MS subjects compared to controls. In contrast, there was increased CD3-induced IFN-gamma in both CD4+ and CD8+ T cells and counterregulatory anti-inflammatory CD3-induced IL-10 secretion in CD4+ T cells in RRMS compared to controls. These data suggest that an equilibrium of a pro-inflammatory (IFN-gamma) and a counterregulatory anti-inflammatory (IL-10) cytokine may define stable clinically definite early RRMS.
authors.affiliation: Department of Neurology, University of Texas-Houston 77225, USA.
authors.forename: S A
authors.initials: SA
authors.lastname: Brod
authors.forename: L D
authors.initials: LD
authors.lastname: Nelson
authors.forename: M
authors.initials: M
authors.lastname: Khan
authors.forename: J S
authors.initials: JS
authors.lastname: Wolinsky
mesh_terms: D017252:CD3 Complex / Q000276:immunology; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology*; D046508:Culture Techniques; D006801:Humans; D007371:Interferon-gamma / Q000276:immunology* / Q000378:metabolism*; D016753:Interleukin-10 / Q000276:immunology* / Q000378:metabolism*; D009103:Multiple Sclerosis / Q000097:blood / Q000276:immunology*; D012008:Recurrence
chemical_list: D017252:CD3 Complex; D016753:Interleukin-10; D007371:Interferon-gamma