The characterization of the repertoire of wheat antigens and peptides involved in the humoral immune responses in patients with gluten sensitivity and Crohn's disease.
Level 4 - case-series / case-control
Case-control laboratory study comparing serum antibody profiles across clinical cohorts and healthy controls
PubMed 23724236 · doi:10.5402/2011/950104
What was done
Serum IgG and IgA antibody reactivity was measured against an array of wheat antigens and peptides (including whole wheat extract, transglutaminase, prodynorphin, wheat germ agglutinin, glutenin, and α-, γ-, and ω-gliadins) in sera from patients with gluten sensitivity, patients with Crohn's disease, and healthy controls.
What was found
The abstract reports qualitative antibody hierarchy patterns without numerical values, titers, or statistical tests: - In gluten sensitivity: IgG reacted most against transglutaminase, prodynorphin, wheat extract, and α-, γ-, and ω-gliadin; IgA reacted most against wheat extract, followed by transglutaminase, glutenin, and other peptides. - In Crohn's disease: IgG reacted most against wheat extract and wheat germ agglutinin, followed by transglutaminase, prodynorphin, and α- and γ-gliadin; IgA reacted foremost against prodynorphin, followed by transglutaminase and α-gliadin.
Why it matters
Demonstrates that humoral immune responses in gluten sensitivity and Crohn's disease involve a diverse repertoire of wheat antigens beyond classical celiac targets, suggesting potential utility for broad-panel serological testing.
Limits
The abstract does not state sample sizes (n), quantitative antibody levels, diagnostic accuracy metrics (sensitivity/specificity), or statistical significance. Specific diagnostic criteria used to define gluten sensitivity were not provided in the abstract.
Cited by
- supports The Cyrex Array 2 test measures antibodies to lipopolysaccharides (LPS) to assess leaky gut, while Cyrex Array 3 measures immune reactivity to gluten and gliadin domains.