Mosquito allergy: recombinant mosquito salivary antigens for new diagnostic tests.

Autor(es): Simons F E; Peng Z

Resumo: In patients with mosquito allergy, lack of a readily available, sensitive, specific, safe test is the major obstacle to accurate diagnosis. Three recombinant mosquito salivary antigens, rAed a 1 (68 kD), rAed a 2 (37 kD) and rAed a 3 (30 kD), from Aedes aegypti have been cloned, expressed, purified and characterized. All three recombinant antigens are shared by Aedes vexans and other mosquito species, and all have been found to have biologic activity in humans. In recent studies, 43% of 28 mosquito bite test-positive subjects had a positive skin test to rAed a 1, 11% to rAed a 2 and 32% to rAed a 3. The sizes of the skin test reactions to the recombinant antigens correlated with the sizes of the A. aegypti bite test reactions. None of 15 A. aegypti bite test-negative subjects had a positive skin test to any of the recombinant antigens. Recombinant mosquito salivary antigens will facilitate the diagnosis of mosquito allergy.

Palavras-Chave: Mosquito allergy; Recombinant antigen; Local cutaneous allergic response; Anaphylaxis; Skin test; ELISA

Imprenta: International Archives of Allergy and Immunology, v. 124, n. 1-3, p. 403-405, 2001

Identificador do objeto digital: 10.1159/000053771

Descritores: Aedes aegypti - Pathogenesis ; Aedes aegypti - Proteins ; Aedes aegypti - Immunology

Data de publicação: 2001