title: Human IgE antibody-forming cells. Radio-resistant and radio-sensitive subpopulations.
abstract: In vitro IgE and antimite IgE antibody (IgE Ab) synthesis was investigated. Peripheral blood lymphocytes (PBL) from atopic patients depleted of E-rosetting T cells developed IgE and IgE Ab in the absence of pokeweed mitogen (PWM), and it was not significantly affected by addition of T cells of of PWM. 1,000 R irradiation decreased more than 50% of the IgE and IgE Ab-producing capacity in 2 of 8 cases, but the remainder were not significantly affected. Increase of the gamma-ray dose from 1,000 to 12,000 R did not result in more suppression. Radio-resistant as well as radio-sensitive subpopulations may exist in the PBL of atopic patients. The radio-sensitive component of IgE and IgE Ab formation was suppressed by PWM, while the radio-resistant component was not affected.
mesh_terms: D000818:Animals; D000921:Antibody-Producing Cells / Q000276:immunology* / Q000528:radiation effects; D001402:B-Lymphocytes / Q000276:immunology; D004307:Dose-Response Relationship, Radiation; D005720:Gamma Rays; D006801:Humans; D006969:Hypersensitivity, Immediate / Q000276:immunology; D007073:Immunoglobulin E / Q000276:immunology*; D008925:Mites; D011043:Pokeweed Mitogens / Q000494:pharmacology; D013601:T-Lymphocytes / Q000276:immunology; D013936:Thymidine / Q000378:metabolism
chemical_list: D011043:Pokeweed Mitogens; D007073:Immunoglobulin E; D013936:Thymidine