title: Increase in T cells bearing IgG Fc receptors in peripheral blood of patients with tuberculosis by in vitro stimulation with purified protein derivative.
abstract: A mixed rosette technique with sheep erythrocytes and chicken erythrocytes coated with heat-aggregated human IgG was used to identify human peripheral blood T lymphocytes bearing IgG Fc receptors (FcR+-T). When peripheral blood lymphocytes from patients with advanced, refractory tuberculosis were stimulated with purified protein derivative (PPD) in vitro, the number of FcR+-T cells increased. No FcR+-T cells developed in peripheral blood lymphocytes from patients with newly diagnosed tuberculosis after stimulation with PPD. The FcR+-T cells from a person who reacted positively to a PPD skin test were isolated by the method of velocity sedimentation. These cells suppressed the PPD-induced proliferative response of autologous peripheral blood lymphocytes as well as the pokeweed mitogen-induced IgG synthesis by B-cells.
mesh_terms: D000328:Adult; D000368:Aged; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis*; D008297:Male; D008875:Middle Aged; D011961:Receptors, Fc / Q000032:analysis* / Q000276:immunology; D012397:Rosette Formation; D013601:T-Lymphocytes / Q000276:immunology*; D014373:Tuberculin / Q000276:immunology*; D014397:Tuberculosis, Pulmonary / Q000276:immunology*
chemical_list: D007074:Immunoglobulin G; D011961:Receptors, Fc; D014373:Tuberculin