Secondary soy allergy in children with birch pollen allergy may cause both chronic and acute symptoms

To cite this article: De Swert LFA, Gadisseur R, Sjölander S, Raes M, Leus J, Van Hoeyveld E. Secondary soy allergy in children with birch pollen allergy may cause both chronic and acute symptoms. Pediatr Allergy Immunol 2011; Doi: 10.1111/j.1399‐3038.2011.01218.x Background:  Secondary soy allergy...

Full description

Saved in:
Bibliographic Details
Published inPediatric allergy and immunology Vol. 23; no. 2; pp. 118 - 124
Main Authors De Swert, Liliane F. A., Gadisseur, Romy, Sjölander, Sigrid, Raes, Marc, Leus, Jasmine, Van Hoeyveld, Erna
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.03.2012
Blackwell
Wiley Subscription Services, Inc
Subjects
Online AccessGet full text
ISSN0905-6157
1399-3038
1399-3038
DOI10.1111/j.1399-3038.2011.01218.x

Cover

More Information
Summary:To cite this article: De Swert LFA, Gadisseur R, Sjölander S, Raes M, Leus J, Van Hoeyveld E. Secondary soy allergy in children with birch pollen allergy may cause both chronic and acute symptoms. Pediatr Allergy Immunol 2011; Doi: 10.1111/j.1399‐3038.2011.01218.x Background:  Secondary soy allergy occurring in tree pollen allergic patients may cause acute symptoms. Methods:  We selected children with birch pollen allergy suspected of also being soy allergic (SA). Soy allergy was proven based on one of the following: (i) a clear‐cut clinical history; (ii) a positive provocation test; and (iii) elimination and reintroduction of soy. Skin prick tests (SPT) were performed with a commercial soy extract and with soy flour. Specific IgE to Gly m 4, Gly m 5, and Gly m 6 was determined by means of ImmunoCAP and ISAC. Eight soy‐tolerant atopic children being CAP rGly m 4‐negative served as a control group for skin testing. Results:  Of 15 subjects with birch pollen allergy and being suspected of soy allergy, eight of them proved to be SA; 7/15 subjects proved to be soy tolerant (ST). Besides acute symptoms in 8/8 SA subjects, 3/8 subjects also had been suffering from severe chronic complaints because of soy allergy. SPT with commercial soy extract was negative in all SA and ST subjects tested. SPT with soy flour was positive in 8/8 SA and in 5/6 ST subjects, but negative in all 8 controls (p < 0.0001); the median weal diameter was 7.7 mm in SA subjects, compared to 3 mm in ST subjects (p < 0.01). The median IgE level to rGly m 4 using CAP and ISAC was, respectively, 32.4 kU/l and 4.0 ISU in SA subjects, compared to 6.2 kU/l and 0.4 ISU in ST subjects (p < 0.05). Analysis of IgE to nGly m 5 and nGly m 6, using CAP or ISAC, showed no significant differences between SA and ST subjects. Conclusions:  Secondary soy allergy may cause severe chronic besides acute symptoms. SPT with soy flour is a sensitive and specific tool in detecting soy sensitization. SPT with soy flour, CAP rGly m 4, and ISAC rGLY m 4 are valuable tools in the diagnosis of birch‐pollen‐associated secondary soy allergy.
Bibliography:istex:78BEDD10E53A5AF318F853634BD88EDDC32AB7F5
ArticleID:PAI1218
ark:/67375/WNG-XPJMVWN1-S
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:0905-6157
1399-3038
1399-3038
DOI:10.1111/j.1399-3038.2011.01218.x