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DOI: 10.1177/154405910808701206
Orally Based Diagnosis of Celiac Disease: Current Perspectives
1 Department of Surgical Sciences, University of Foggia, c/o Ospedali Riuniti, viale Pinto, 71100 Foggia, Italy; and Correspondence: * corresponding author, lpastore{at}yahoo.com Celiac disease (CD) is a lifelong immune-mediated disorder caused by the ingestion of wheat gluten in genetically susceptible persons. Most cases of CD are atypical and remain undiagnosed, which exposes the individuals to the risk of life-threatening complications. Serologic endomysial and tissue transglutaminase antibody tests are used to screen at-risk individuals, although a firm diagnosis requires demonstration of characteristic histopathologic findings in the small-intestinal mucosa. A gluten challenge, with a repeat biopsy to demonstrate recurrence of histopathologic changes in the intestinal mucosa after the re-introduction of gluten, is considered for those persons in whom diagnosis remains in doubt. In this paper, we review studies that evaluated: (1) the possibility of using oral mucosa for the initial diagnosis of CD or for local gluten challenge; and (2) the possibility of using salivary CD-associated antibodies as screening tests. Our review shows that orally based diagnosis of CD is attractive and promising, although additional evaluations with standardized collection and analysis methods are needed. There is some evidence of a dissociation between systemic and oral mucosal immune responses in CD. The hypothesis that gluten could stimulate naïve lymphocytes directly in the oral cavity would have important implications for the understanding, diagnosis, and management of CD.
Key Words: celiac disease • diagnosis • oral mucosa • saliva • screening
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