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Title
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Sensitization profiles to peanut allergens in Belgium : cracking the code in infants, children and adults
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Author
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Abstract
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| Objectives: Peanut allergy shows distinct clinical patterns that can be predicted by component resolved diagnosis. However, data about peanut sensitization profiles in populations with a broad age stratification are scarce. Methods: Sera of 89 peanut allergic patients (age 170 years), 21 infants (<1 year) with atopic dermatitis (AD) sensitized to peanut, 24 age matched peanut-tolerant individuals with positive specific IgE (sIgE) to peanut and 15 healthy individuals were tested for sIgE reactivity to rAra h 1, rAra h 2, rAra h 3, rAra h 8, rAra h 9 and rBet v 1 (FEIA ImmunoCAP, Thermo Fisher Scientific). Results: In infants with AD, Ara h 1, Ara h 2 and Ara h 3 enabled to explain 14/21 (67%) of peanut sensitizations. No sensitization to Ara h 8 or Bet v 1 was observed. Patients with generalized reactions were more frequently sensitized to Ara h 1, Ara h 2 and Ara h 3 compared to patients with an oral allergy syndrome (OAS) and peanut-tolerant patients. Sensitization to Ara h 8 was significantly more observed in patients with an OAS. Ara h 2 showed to be the best marker to distinguish patients with generalized reactions from patients with an OAS and/or peanut sensitized patients but tolerating the legume. Conclusion: Sensitization to Ara h 1, Ara h 2 and Ara h 3 can have an early onset and is predominantly associated with a more severe outcome. Ara h 2 is the best marker of a generalized peanut allergy. |
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Language
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English
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Source (journal)
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Acta clinica Belgica. - Leuven, 1946 - 1997
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Publication
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Leuven
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2016
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ISSN
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0001-5512
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DOI
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10.1080/17843286.2015.1109170
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Volume/pages
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(2016)
, p. 1-7
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ISI
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000377620500004
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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