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Asthma Induced by Canary Food Mix

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A 42-year-old woman reported immediate rhinoconjunctivitis, asthma, and contact urticaria while handling bird food. Skin-prick tests were positive to Lolium, Cynodon, Phragmites, Cupressus sempervirens, Cupressus arizonica, Chenopodium, sunflower pollen and seed, mugwort, chamomile, Chrysanthemum, Taraxacum, canary seed, and black seed (Guizotia abyssinica). The patient's serum-specific immunoglobulin (IgE) to Taraxacum, black seed, and canary seed was positive. Enzyme-linked immunosorbent assay inhibition studies revealed a 97 and 27% IgE-binding inhibition of whole canary food IgE by black seed and Taraxacum pollen, respectively. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis immunoblotting showed two IgE-binding protein bands of 11 and 44 kDa in the G. abyssinica extract. These two bands were totally inhibited by sunflower seed, mugwort, and Taraxacum extracts. Specific bronchial challenge with black seed extract was positive. The patient was able to feed her canary with birdseeds after she removed black seeds. We report a case of asthma caused by black seed (G. abyssinica) used as canary food in a patient previously allergic to pollen (olea europaea, grass, and mugwort) and sunflower seeds.
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Document Type: Original Article

Publication date: July 1, 2003

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  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma and by having the potential to directly impact the quality of patient care. AAP welcomes the submission of original works including peer-reviewed original research and clinical trial results. Additionally, as the official journal of the Eastern Allergy Conference (EAC), AAP will publish content from EAC poster sessions as well as review articles derived from EAC lectures.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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