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  • Title: Abnormalities of immunoregulatory T cell subsets in patients with insulin-dependent diabetes mellitus.
    Author: Horita M, Suzuki H, Onodera T, Ginsberg-Fellner F, Fauci AS, Notkins AL.
    Journal: J Immunol; 1982 Oct; 129(4):1426-9. PubMed ID: 6213714.
    Abstract:
    Patients with insulin-dependent diabetes mellitus (IDDM) have autoantibodies that react with cells in the islets of Langerhans. To determine whether these patients suffer from a more generalized immunoregulatory disorder, the ratio of phenotypic helper to suppressor cells was evaluated by specific monoclonal antibodies. Our experiments showed that the helper/suppressor cell ratio was significantly increased in patients with IDDM of less of 2 mo duration and then gradually returned to normal. Despite the alteration in the helper/suppressor cell ratio, there was no evidence for polyclonal activation as measured by the number of immunoglobulin-secreting plaque-forming cells in the peripheral blood. There was, however, a significant increase in the number of spontaneous plaque-forming cells in patients suffering from both IDDM and Hashimoto's thyroiditis (HT). Nonetheless, immunoglobulin production after stimulation with pokeweed mitogen was not different in diabetics with or without HT when compared to normal controls. These findings suggest that subtle changes in the immunoregulatory system occur during the early stages of IDDM.
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