title: [Immunoregulatory cells in patients with monoclonal gammopathies].
abstract: The authors detected immunoregulatory cells by two-color cytometric analysis in the peripheral blood of 21 patients with multiple myeloma (MM) and 10 patients with monoclonal gammopathy of undetermined significance (MGUS). CD3-CD56+ cells increased in both MGUS and IgG, IgA type MM in clinical stage (CS) I & II, whereas CD3+ cells decreased. On the other hand, the CD4/8 ratio, the proportions of CD45RA+ cells and CD29++ cells in CD4+ cells, and S6F1++ cells in CD8++ cells remained normal. In CS III MM of IgG and IgA type, CD3-CD56+ cells did not increase, although CD3+ cells decreased. Additionally, both CD4/8 and CD4+ CD45RA+/CD4+ ratios were low, while the proportions of CD29++ cells in CD4 cells and S6F1++ cells in CD8++ cells were high. However, this type of change in the T-cell subset balance was not observed in CS III MM of the Bence-Jones type, which showed no significant elevation of serum M-protein. These findings suggest that serum monoclonal idiotypes could affect immunoregulatory cells, especially T cells.
authors.affiliation: First Department of Internal Medicine, Tokyo Medical College.
authors.forename: Y
authors.initials: Y
authors.lastname: Kuriyama
authors.forename: Y
authors.initials: Y
authors.lastname: Kawanishi
authors.forename: O
authors.initials: O
authors.lastname: Iwase
authors.forename: M
authors.initials: M
authors.lastname: Nakano
authors.forename: K
authors.initials: K
authors.lastname: Toyama
mesh_terms: D005434:Flow Cytometry; D006801:Humans; D009101:Multiple Myeloma / Q000276:immunology; D010265:Paraproteinemias / Q000276:immunology*; D016176:T-Lymphocyte Subsets / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*