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Wheat allergy in children evaluated with challenge and IgE antibodies to wheat components
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2015 (English)In: Pediatric Allergy and Immunology, ISSN 0905-6157, E-ISSN 1399-3038, Vol. 26, no 2, 119-125 p.Article in journal (Refereed) Published
Abstract [en]

IntroductionWheat sensitization is common but IgE antibodies (IgE-abs) to wheat are not predictive of clinical symptoms in children with suspected wheat allergy. Wheat allergen components other than -5gliadin have not been well studied. Our aim was to characterize the clinical profile and investigate the value of adding measurements of IgE-abs to wheat components in a group of children with a doctor's diagnosed wheat allergy. MethodSixty-three children with a doctor's diagnosis of wheat allergy confirmed sensitization to wheat and, on a wheat elimination diet, went through oral wheat challenges or had a convincing recent history of wheat allergy. IgE-ab to -5 gliadin, low molecular weight glutenin (LMW-glutenin), high molecular weight glutenin (HMW-glutenin) and a native gliadin preparation containing -, -, -, and -gliadin (gliadin) were analyzed. ResultsTwenty-six children were positive in challenge, while six children were regarded as wheat allergic due to recent anaphylactic reactions. The IgE-ab levels to all four wheat components were significantly higher in the group with wheat allergy compared to the group with no wheat allergy (p<0.0001). Also, the severity of symptoms at challenge correlated with the IgE-ab levels to all four components (p<0.05). IgE-ab levels to -5 gliadin correlated best with challenge outcome, and by additional analysis of gliadin, HMW- and LMW-glutenin IgE-abs all challenge positive children could be identified. ConclusionMany children diagnosed as wheat allergic have outgrown their allergy and are unnecessarily on a wheat-free diet. The levels of IgE-ab to wheat gluten-derived components correlated well with wheat challenge outcome and severity.

Place, publisher, year, edition, pages
2015. Vol. 26, no 2, 119-125 p.
Keyword [en]
allergy, children, food challenge, gliadin, glutenin, IgE, wheat, omega-5 gliadin
National Category
Pediatrics Respiratory Medicine and Allergy
Identifiers
URN: urn:nbn:se:uu:diva-252027DOI: 10.1111/pai.12334ISI: 000351626800006PubMedID: 25601168OAI: oai:DiVA.org:uu-252027DiVA: diva2:809160
Available from: 2015-04-30 Created: 2015-04-28 Last updated: 2017-12-04Bibliographically approved

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Borres, Magnus P.

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