Abstract
Serum gliadin antibodies of the IgA and IgG isotypes were determined by means of the diffusion-in-gel enzyme-linked immunosorbent assay (DIG-ELISA) in children during different phases of coeliac disease. Fourteen children were studied before onset of dietary treatment, 16 during a period of gluten-free diet and 16 during gluten challenge. The control groups consisted of 44 children with other gastrointestinal diseases and 14 children without gastrointestinal disorders. All of the children studied had been subjected to small-intestinal biopsy. On the basis of the results obtained in this study the diagnostic sensitivity with regard to untreated coeliac disease was found to be 100% and the diagnostic specificity 97%. In 10 coeliac children followed during the phases of diagnostic evaluation antibody levels decreased in all during dietary treatment and increased in 8 during a subsequent gluten challenge. It is suggested that determination of IgA and IgG gliadin antibodies by means of DIG-ELISA may be used as a diagnostic test for coeliac disease in children and that this test may be useful in monitoring the dietary treatment in children with known coeliac disease. Moreover, the DIG-ELISA is an inexpensive and technically simple method.
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