title: [Regulation of the natural killer activity of lymphocytes from healthy donors and patients with chronic lympholeukemia through the interaction of T- and non-T cells].
abstract: The role of T- and B-cell cooperative interaction in the regulation of natural killer (NK) activity in human peripheral blood lymphocytes was studied. It has been shown that preincubation of normal donor mononuclear cells (MNC) for 48 h is followed by the loss of NK activity, while the incubation of the isolated T- and non-T-cell subsets does not lead to an analogous fall in the killer lymphocyte function. NK activity of MNC and isolated lymphocyte subsets in normal donors is shown to exceed that of CLL patients. The absence of preincubation effect on NK activity level of MNC, T- and non-T-cells in CLL patients has been also found. The findings obtained suggest that as a result of T- and B-cell interaction during preincubation differentiation of young T lymphocytes with NK cellular properties takes place. It is followed by the loss in NK activity. B-cell defect in CLL patients might cause the absence of preincubation effect on NK activity of T cells.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology; D002450:Cell Communication; D002478:Cells, Cultured; D003601:Cytotoxicity Tests, Immunologic; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D007945:Leukemia, Lymphoid / Q000276:immunology*; D008215:Lymphocytes, Null / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*; D013997:Time Factors
vernacular_title: Reguliatsiia natural'noĭ killernoĭ aktivnosti limfotsitov zdovorykh donorov i bol'nykh khronicheskim limfoleĭkozom putem vzaimodeĭstviĭ T- i ne-T-kletok.