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Altered Immunoregulation in Waldenström's macroglobulinemia. I. The absence of con A‐induced and spontaneous T suppressor cell activity in a patient and his kindred
Author(s) -
Keller Robert H.,
Feldman Eric,
Libnoch Joseph A.
Publication year - 1983
Publication title -
american journal of hematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.456
H-Index - 105
eISSN - 1096-8652
pISSN - 0361-8609
DOI - 10.1002/ajh.2830140303
Subject(s) - macroglobulinemia , peripheral blood mononuclear cell , waldenstrom macroglobulinemia , stimulation , suppressor , immunology , in vitro , lymphocyte , medicine , t cell , endocrinology , biology , immune system , multiple myeloma , lymphoma , cancer , biochemistry
Abstract In vitro lymphocyte functions in a patient with Waldenström's macroglobulinemia and his kindred were examined. The percentage and number of total peripheral blood T cells and the absolute number of FCγ bearing T cells were decreased in the patient and family members compared to controls but the B cells and monocytes were normal. In addition, PHA and PWM stimulated proliferation were decreased. Decreased responsiveness to PWM was abrogated by preculturing PBMC in media alone before PWM stimulation. Decreased responsiveness to PHA was not reversed by a similar period of preculture. To further define the above abnormalities in immunoregulation we examined mononuclear subpopulations. In controls, adding purified T cells or Con A activated lymphocytes to autologous cultures which had been stimulated with PHA and PWM significantly decreased proliferative activity. No such suppressive activity of T cells or Con A activated cells from the patient or family members was noted. These data demonstrate an absent or functionally inactive spontaneous and Con A activated T suppressor cells in the family of a patient with Waldenström's macroglobulinemia.