Title : Dermal mast cell activation by autoantibodies against the high affinity IgE receptor in chronic urticaria.

Pub. Date : 1996 May

PMID : 8618029






3 Functional Relationships(s)
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1 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 Fc epsilon receptor Ia Homo sapiens
2 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 Fc epsilon receptor Ia Homo sapiens
3 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 Fc epsilon receptor Ia Homo sapiens