PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8618029-4 1996 Based on histamine release from IgE-sensitized and nonsensitized basophil leukocytes of healthy donors, we detected anti-Fc epsilon RI alpha autoantibodies in sera from 38 (23%) urticaria patients and evidence for anti-IgE antibodies in a further nine patients. Histamine 9-18 Fc epsilon receptor Ia Homo sapiens 121-140 8618029-7 1996 Preincubation of sera or the IgG fraction with a recombinant alpha-chain of Fc epsilon RI inhibited histamine release from mast cells and basophils. Histamine 100-109 Fc gamma receptor and transporter Homo sapiens 61-72 8618029-7 1996 Preincubation of sera or the IgG fraction with a recombinant alpha-chain of Fc epsilon RI inhibited histamine release from mast cells and basophils. Histamine 100-109 Fc epsilon receptor Ia Homo sapiens 76-89 8618029-9 1996 These studies demonstrate that circulating levels of anti-Fc epsilon RI alpha autoantibodies mediate histamine release from skin mast cells in vitro and, taken together with in vivo evidence of mast cell degranulation following intradermal injection of autologous serum, support the concept that anti-Fc epsilon RI alpha autoantibodies are relevant to the pathogenesis of severe chronic urticaria in about 25% of patients. Histamine 101-110 Fc epsilon receptor Ia Homo sapiens 58-77