title: HLA and lymphocyte histamine sensitivity in mastocytosis.
abstract: HLA-ABC and DR typing was performed on 50 patients with mastocytosis. Lymphocyte stimulation with concanavalin A has earlier been performed in 22 of these patients. No phenotypic aberrations were detected in the patient group. 8 patients had the HLA-B12 phenotype. Lymphocytes from the HLA-B12 phenotype stimulated with a lymphocyte mitogen have earlier been shown to react with decreased inhibitory effect to histamine. 2 patients in this study had the HLA-B12 phenotype and systemic mastocytosis with high histamine turnover, but these patients reacted with a low mitogen response of the lymphocytes.
mesh_terms: D000328:Adult; D000368:Aged; D003208:Concanavalin A / Q000494:pharmacology; D005260:Female; D006680:HLA Antigens / Q000276:immunology*; D015235:HLA-B Antigens; D006632:Histamine / Q000378:metabolism / Q000494:pharmacology*; D006801:Humans; D066298:In Vitro Techniques; D008213:Lymphocyte Activation / Q000187:drug effects; D008214:Lymphocytes / Q000187:drug effects* / Q000276:immunology; D008297:Male; D008875:Middle Aged; D014582:Urticaria Pigmentosa / Q000276:immunology* / Q000378:metabolism
chemical_list: D006680:HLA Antigens; D015235:HLA-B Antigens; C035015:HLA-B12 antigen; D003208:Concanavalin A; D006632:Histamine