title: Immunoregulatory T cell abnormalities in mucocutaneous lymph node syndrome.
abstract: We recently demonstrated that during the acute phase of mucocutaneous lymph node syndrome (MCLS)3 there was a significant reduction in circulating T8+ suppressor/cytotoxic T cells and an increased number of Ia/Dr-bearing T4+ T cells, which suggests the presence of circulating activated helper T cells (1). Furthermore, the vast majority of patients with acute MCLS had a significantly elevated number of circulating B cells spontaneously secreting IgG and IgM. In the present study, the possible role of the immunoregulatory T cell abnormalities in the polyclonal B cell activation was investigated by assaying the ability of T cells and T cell factors from patients with acute MCLS to induce immunoglobulin production by normal B lymphocytes. We also examined the capacity of normal T cells to suppress immunoglobulin production by activated B cells from patients with acute MCLS.
mesh_terms: D000921:Antibody-Producing Cells / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000096:biosynthesis; D007223:Infant; D008206:Lymphatic Diseases / Q000276:immunology*; D008213:Lymphocyte Activation; D008297:Male; D009080:Mucocutaneous Lymph Node Syndrome / Q000276:immunology*; D010641:Phenotype; D013601:T-Lymphocytes / Q000145:classification / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology
chemical_list: D007074:Immunoglobulin G