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Published in: Clinical and Translational Allergy 1/2017

Open Access 01-12-2017 | Research

Sensitization to PR-10 proteins is indicative of distinctive sensitization patterns in adults with a suspected food allergy

Authors: Mark A. Blankestijn, André C. Knulst, Edward F. Knol, Thuy-My Le, Heike Rockmann, Henny G. Otten, Rob J. B. Klemans

Published in: Clinical and Translational Allergy | Issue 1/2017

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Abstract

Background

The extent of co-sensitization within and between food protein families in an adult population is largely unknown. This study aimed to identify the most frequently recognized components in the PR-10 and storage protein family, as well as patterns in (co-)sensitization, in a birch-endemic area.

Methods

Results of ImmunoCAP ISAC, performed during routine care in Dutch adult outpatients suspected of food allergy, were collected.

Results

A total of 305 patients were selected, aged 16–79 years (median 32 years). Sensitization to one or more PR-10 proteins was most frequent (74% of all subjects), followed by 35% to storage protein and 15% to nsLTPs. Within the PR-10 family, subjects were most often sensitized to Bet v 1 (73% of 305), Cor a 1.04 (72%) and Mal d 1 (68%). Sensitization to PR-10s from soy, celery and kiwi occurred distinctively less often (< 55% of Bet v 1 sensitized subjects) compared to other food PR-10s (all > 70%). Subjects sensitized to these ‘less common PR-10 proteins’ were sensitized to more food and inhalant components on the ISAC, compared to subjects sensitized to ‘common PR-10 proteins’ (median 22 vs 13 out of 112, p < 0.0001). Seven subjects demonstrated sensitization to food PR-10 proteins, without concomitant sensitization to pollen PR-10s. Within the storage proteins, sensitization to multiple peanut allergens was most common (on average 3 out of 4).

Conclusions

Sensitization to PR-10 food proteins could occur without concomitant sensitization to common PR-10 from pollen in a subset of subjects. Less commonly recognized PR-10 proteins appear to be an indication of polysensitization.
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Metadata
Title
Sensitization to PR-10 proteins is indicative of distinctive sensitization patterns in adults with a suspected food allergy
Authors
Mark A. Blankestijn
André C. Knulst
Edward F. Knol
Thuy-My Le
Heike Rockmann
Henny G. Otten
Rob J. B. Klemans
Publication date
01-12-2017
Publisher
BioMed Central
Published in
Clinical and Translational Allergy / Issue 1/2017
Electronic ISSN: 2045-7022
DOI
https://doi.org/10.1186/s13601-017-0177-4

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