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Effect of HLA DQ2, dietary exposure and coeliac disease on the development of antibody response to gliadin in children.

Abstract：

OBJECTIVE:To study the effect of HLA DQ2, dietary history and development of coeliac disease (CD) on the induction of antibody response to wheat gliadin and cow's milk, beta-lactoglobulin between 1 and 2.5 years of age in children who developed CD and in healthy children. MATERIAL AND METHODS:Infants participating in a birth cohort study (the ABIS study) in Sweden were studied. Thirty-nine children developed CD (=cases), confirmed through biopsy, during follow-up until 2.5-5 years of age. A total of 181 healthy control children were matched for duration of exclusive breast-feeding, birth-weight, gender, maternal smoking and season of birth. IgG and IgA antigliadin and anti-beta-lactoglobulin antibodies were measured using enzyme immunoassay (EIA). The effects of HLA-risk genotypes, DQ2 and DQ8, on CD were also considered. RESULTS:Children who developed CD had higher IgG and IgA antigliadin and anti-beta-lactoglobulin antibody levels at 1 year of age than controls (all comparisons: p<0.001). Similar differences were seen between cases with as yet undiagnosed CD by 1 year of age and controls, and also when cases were compared with HLA-matched controls. Higher levels of IgG and IgA antibodies to beta-lactoglobulin (p=0.003; p=0.001), but not to gliadin, were found in treated cases versus controls at 2.5 years of age. HLA-DQ2-positive healthy children had lower levels of IgG and IgA antigliadin antibodies than HLA-DQ2 negative controls at 1 year of age (p=0.004; p=0.012). CONCLUSIONS:Enhanced humoral response emerging not only to gliadin, but also to other food antigens seems to be primarily associated with CD. Poor induction of antibody response to wheat gliadin in healthy children with the HLA-DQ2 risk molecule could at least partly explain the genetic predisposition to gluten intolerance and CD.

journal_name

Scand J Gastroenterol

journal_title

Scandinavian journal of gastroenterology

authors

Ludvigsson JF,Eylert M,Ilonen J,Ludvigson J,Vaarala O

doi

10.1080/00365520500535519

subject

Has Abstract

pub_date

2006-08-01 00:00:00

pages

919-28

issue

eissn

0036-5521

issn

1502-7708

pii

P150225R87776202

journal_volume

pub_type

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Effect of HLA DQ2, dietary exposure and coeliac disease on the development of antibody response to gliadin in children.