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Treatment with lipid transfer protein sublingual immunotherapy: slowing down new sensitizations

Asia Pacific Allergy 2021년 11권 1호 p.6 ~ 6
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Abstract


Food allergy (FA) is a potentially life-threatening condition, food allergen immunotherapy, targeting the underlying mechanisms, is a potentially curative strategy in FA. A 46-year-old woman had an episode of facial angioedema and urticaria after mandarin ingestion and other episode of urticaria, abdominal pain, and facial angioedema after eating hazelnuts and almonds 4 years ago and contact urticaria (CU) with the manipulation of the peach skin. Three years ago, she suffered a facial and glottis angioedema, generalized urticaria, vomiting, and abdominal pain 10?15 minutes after eating green beans. She was treated with intravenous corticosteroids and antihistamines and intramuscular epinephrine, with complete resolution within a few hours. She no longer consumed nuts, and she avoided vegetables or fruits that caused her symptoms. Prick-prick test were performed, being positive with lettuce, eggplant, and cabbage and negative for cauliflower and broccoli. Total IgE (UniCAP method, kU/L) was 39.3, specific IgE Prup3 lipid transfer protein (LTP), 3.9; specific IgE to peanut, peach, pear, lemon, almond, avocado, walnut, cherry, and green bean were also positive. We decided to try to stop the march of the LTP sensitizations. Sublingual immunotherapy with a peach extract quantified in 12 μg/mL of peach allergen Prup3 was then initiated without any adverse event, and she has good adherence to the treatment. After 1 year, single-blind oral challenge test with peach, mandarin, and aubergine, were performed up to a portion dose (approximately 100 g) with all good tolerances.

키워드

Food allergy; Lipid transfer protein; Immunotherapy; Desensitization; Allergen challenge test

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