Barley and rye prolamins induce an mRNA interferon-gamma response in coeliac mucosa

Alimentary Pharmacology & Therapeutics
S C BrackenC Feighery

Abstract

In coeliac disease, wheat, barley and rye are traditionally excluded in the gluten-free diet. However, few studies have examined the small intestinal immune response to barley and rye. To investigate the immunogenicity of barley and rye prolamins (hordein and secalin respectively) in comparison with wheat gliadin. Duodenal biopsies from 22 coeliac patients and 23 disease controls were cultured for 4 h with gliadin, hordein or secalin and compared with culture medium alone. Proinflammatory cytokines, interferon-gamma and interleukin-2, were quantified by TaqMan polymerase chain reaction and enzyme-linked immunosorbent assay. Hordein caused the greatest increase in interferon-gamma mRNA in coeliac patients (median: 3.3-fold) in comparison with control subjects (median: 0.28-fold, P < 0.085). Secalin and gliadin induced similar levels of interferon-gamma mRNA with median fold-changes of 3.4 and 2.8, respectively, in coeliac patients in comparison with 1.6- and 1.1-fold increases in control subjects (P < 0.294 and P < 0.105, respectively). The median fold-changes for interleukin-2 mRNA did not differ between coeliac patients and controls. Cytokine protein was not upregulated. The findings of this study provide evidence that barley ...Continue Reading

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Citations

Jun 3, 2011·World Journal of Gastroenterology : WJG·Hugh James FreemanAlan Br Thomson
May 9, 2014·Expert Opinion on Investigational Drugs·Kalle KurppaK Lindfors
Jun 18, 2010·Digestive and Liver Disease : Official Journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver·Antonio CarroccioNorberto Pogna

Related Concepts

Biopsy
Celiac Disease
Enzyme-Linked Immunosorbent Assay
Secalins
Interferon Type II
Structure of Intestinal Gland
Organ Culture Techniques
Plant Proteins
Poly(A) Tail
Secale

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