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Antibodies to Deamidated Gliadin as a Tool in Diagnosing Childhood Celiac Disease

Celiac.com 10/01/2009 - Antibodies to deamidated gliadin offer a promising new tool in the diagnosis of celiac disease. A team of researchers recently set out of examine serodiagnosis of childhood celiac disease assay of antibodies against deamidated gliadin.

 The research team was made up of Christian Prause, Thomas Richter, Sibylle Koletzko, H. Holm Uhlig, Almuthe C. Hauer, Martin Stern, Klaus-Peter Zimmer, Martin W. Laass, Christian Probst, Wolfgang Schlumberger, and Thomas Mothes.

Their results show that the ELISA for gauging IgG antibodies to deamidated gliadin-analogous fusion peptides (GAF3X) performs better in children than does the ELISA for gauging antibodies against native gliadin, and compares favorably to results for IgA antibodies against tissue transglutaminase (IgA-anti-tTG).

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By combining investigations of IgG antibodies to GAF3X (IgG-anti-GAF3X) with IgA-anti-tTG, a significantly higher number of children were positively confirmed to have celiac disease, or to be free of celiac disease.

The new IgG-anti-GAF3X ELISA detected three instances of IgA deficienc, along with two cases of silent celiac disease, in addition to improving diagnosis of children under 2 years of age.

It will be interesting to see where these enhanced approaches for diagnosing celiac disease will take us. Much research certainly supports the benefits of early diagnosis and treatment, especially with respect to the development of conditions associated with untreated and/or latent celiac disease. Even the ability to diagnose a new category of gluten intolerant individuals might gain steam from more refined screening techniques.

Source:
Annals of the New York Academy of Sciences - Volume 1173 Issue Contemporary Challenges in Autoimmunity, Pages 28 - 35

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