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  • Title: Role of tropomyosin as a cross-reacting allergen in sensitization to cockroach in patients from Martinique (French Caribbean island) with a respiratory allergy to mite and a food allergy to crab and shrimp.
    Author: Purohit A, Shao J, Degreef JM, van Leeuwen A, van Ree R, Pauli G, de Blay F.
    Journal: Eur Ann Allergy Clin Immunol; 2007 Mar; 39(3):85-8. PubMed ID: 17465280.
    Abstract:
    BACKGROUND: Tropomyosin has been described as cross-reacting allergen between mite, cockroach and shrimp. METHODS: In 13 patients with asthma and/or rhinitis sensitized to mite and/or German cockroach and presenting urticaria, oral allergy syndrome or angio-edema upon eating shrimp and/or crab, we measured specific IgE to mite, cockroach, crab and shrimp tropomyosin. RESULTS: Ten patients had specific IgE to tropomyosin from mite, 8 from shrimp, 6 from crab and 5 from cockroach. AST inhibition tests indicated that mite allergen is a primary sensitizer and is cross-reacting with shrimp, crab and cockroach allergens. CONCLUSION: Tropomyosin could be the cross-reacting allergen relevant for clinical symptoms to mite, cockroach, shrimp and crab.
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