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Archivos argentinos de pediatría

versión impresa ISSN 0325-0075versión On-line ISSN 1668-3501

Resumen

ORTIZ, Gonzalo et al. IgA anti-tissue transglutaminase antibodies and IgG antibodies against deamidated gliadin peptides as predictors of celiac disease. Arch. argent. pediatr. [online]. 2019, vol.117, n.1, pp.52-55. ISSN 0325-0075.  http://dx.doi.org/10.5546/aap.2019.52.

Objective. To compare the performance of IgA anti-tissue transglutaminase antibodies (IgA anti-tTG), IgA anti-endomysial antibodies (IgA EMA), and IgA/IgG antibodies against deamidated gliadin peptides (IgA/IgG anti-DGP) for the diagnosis of celiac disease. Methods. Descriptive study in patients with celiac disease. Anti-DGP (IgA/IgG), IgA EMA, IgA anti-tTG antibodies were measured and an intestinal biopsy was done. Sex: female (61 %). Median age: 78.4 months old. Results. A total of 136 children were included; 108 had high IgA anti-DGP titers; 124, increased IgG anti-DGP titers; 128, positive IgA EMA titers; and 130, increased IgA anti-tTG titers. High IgG anti-DGP titers were observed in 4/6 patients with negative IgA anti-tTG antibodies. The combination of IgG anti-DGP + IgA anti-tTG antibodies showed a positive correlation in 134 patients and the IgG anti-DGP + EMA combination was positive in 133 children. Conclusion. IgA EMA, IgA anti-tTG, and IgG anti-DGP antibodies exhibited an adequate specificity and sensitivity. The IgG anti-DGP/anti-tTG combination showed a 98-99 % sensitivity and a 100 % specificity. The anti-tTG and IgG anti-DGP option yields excellent results, with a low cost and independence from the observer.

Palabras clave : Celiac disease; Antibodies; Diagnosis; Children.

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