title: Antibody-dependent lymphocyte killer function in human immunodeficiency diseases.
abstract: Antibody-dependent cell immunity to the lymphocyte system (ABCIL) has been shown to be a function of a non-thymus-processed cell in the experimental animal. To evaluate its role in the human and to assess its clinical usefulness, we assessed ABCIL in twenty-five patients with various immunodeficiency (ID) syndromes. Our technique measures the lysis of 51Cr-labelled normal human lymphocytes coated with HL-A-specific antibody. Cytotoxicity is expressed as a percentage of 51Cr released after subtracting the spontaneous target cell release. Mean values in normals are 20+/-2 (s.e.). The ten patients with AB deficiency had a mean ABCIL of 7-9+/-2 (Pless than0-01). All eight patients with cellular ID had normal ABCIL (18+/-2), while the ten patients with combined ID had variable results. Effector cell function in the ABCIL test correlated (r=0-74; Pless than0-05) with the percentage of B cells in the peripheral blood. No correlation was found between ABCIL function and serum immunoglobulin levels or rosette-forming cells in the peripheral blood. There is a function for B lymphocytes other than as a precursor of antibody-synthesizing cells.
mesh_terms: D000293:Adolescent; D000328:Adult; D000361:Agammaglobulinemia / Q000276:immunology; D000906:Antibodies / Q000032:analysis; D001402:B-Lymphocytes / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D003601:Cytotoxicity Tests, Immunologic; D005260:Female; D006680:HLA Antigens / Q000032:analysis; D006801:Humans; D007111:Immunity, Cellular; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007153:Immunologic Deficiency Syndromes / Q000276:immunology*; D007223:Infant; D008214:Lymphocytes / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D012882:Skin Tests
chemical_list: D000906:Antibodies; D006680:HLA Antigens; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M