Grape Anaphylaxis: A Study of 11 Adult Onset Cases
Reports of immunoglobulin E (IgE)-mediated allergic reactions to grapes and wine are limited in the literature. Nevertheless, grapes are widely grown and consumed in Mediterranean countries. The object of this prospective study was to present clinical features, in vivo and in vitro allergy testing, and human leukocyte antigen (HLA) serotyping in patients with recurring reactions to grapes and grape products. Eleven unrelated Greek patients, six men and five women (aged 16 – 44 years; mean, 26.9 years) were enrolled based on a documented history of IgE-mediated reactions to grapes, wine, or other grape products. Their evaluation included full history, reaction severity, clinical examination, skinprick tests with food allergens and molds, serum IgE, specific IgEs to the same allergen battery, and HLA typing. Patients reported 35 grape-induced anaphylaxis episodes ranging from moderate (more than one system involved but not prominent respiratory or cardiovascular symptoms; 45.5%) to severe (serious respiratory obstruction and/or hypotension and loss of consciousness; 54.5%). A causative agent was identified: wine, 10/35 (28.6%); red grapes, 9/35 (25.7%); stuffed vine leaves, 8/35 (22.9%); raisins, 3/35 (8.6%); white grapes, 2/35 (5.7%); wine vinegar, 2/35 (5.7%); and grape juice, 1/35 (2.9%). Other foods that induced anaphylaxis were apples (54.5%), cherries (18.6%), peaches (18.6%), and bananas (9.3%). Specific IgE values were in accordance with skin-prick tests reactivity. Concerning HLA typing, 9/11 possessed HLA-DR11(5) and -DQ7(3) and the remanning two possessed HLA-DR17(3) and -DQ2 antigens. Grapes, wine and other grape products might cause serious allergic reactions in sensitized individuals. The cosensitization and reaction incidence to other fruit allergens could be a basis for further investigation of panallergens of fruits. HLA class II antigens may contribute in genetic predisposition to these allergic reactions.
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Document Type: Research Article
Publication date: January 1, 2005
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