Alterations in immunoregulatory T cell subsets in active systemic lupus erythematosus.
To determine whether imbalance among subsets of human T cells exists in patients with systemic lupus erythematosus (SLE), we analyzed peripheral blood lymphocytes in SLE patients during active and inactive stages of disease. For this analysis, we used monoclonal antibodies to the surface antigens of inducer (T4) and suppressor (T5/T8) T cell subsets, as well as a common T cell antigen (T3). In contrast to normal and inactive SLE patients, the percentage of T3+ cells was reduced in all active SLE patients. More importantly, there was a selective decrease in T5+/T8+ suppressor T cells in 12 of 14 active patients, including 1 of 2 patients with drug-induced SLE. Serial analysis of three SLE patients showed a significant correlation between the presence of T5+/T8+ subset and clinical disease activity in all patients. We conclude that aberrations in suppressor T cell subsets are an important correlate of disease in patients with SLE.
23 references, click to expand
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