Background: High serum levels of anti-tissue-transglutaminase-2 IgA antibodies (anti-TG2), which are produced and deposited in the intestine, characterize celiac disease. Aim: To assess the diagnostic value of intestinal deposits of anti-TG2 IgA for celiac disease in a paediatric population. Methods: 344 children underwent duodenal biopsy for the suspicion of CD, and were divided into 3 groups: group A, 144 celiac subjects with villous atrophy (Marsh 3b–c); group B, 109 subjects with high serum levels of anti-TG2 but normal intestinal mucosa (Marsh 0–1) (potential celiac disease patients); group C, 91 subjects with normal levels of serum anti-TG2: 70 with Marsh 0–1 and 21 with Marsh 3a mucosa. All duodenal sections were evaluated for the presence of intestinal deposits of anti-TG2 IgA by double immunofluorescence. Results: Deposits of anti-TG2 IgA were present in 96%, 68%, 12% of patients from groups A, B, C, respectively. Diagnostic sensitivity and specificity for celiac disease were 96% and 88% vs. 97% and 100% for serum anti-TG2, respectively. The degree of concordance with serum anti-TG2 was 85%. Conclusion: Detection of intestinal deposits of anti-TG2 IgA is a useful diagnostic tool. Further research is needed regarding their ability to predict evolution to villous atrophy in potential celiac disease.
Intestinal deposits of anti-tissue transglutaminase IgA in childhood celiac disease / Mariantonia, Maglio; Antonella, Tosco; Auricchio, Renata; Francesco, Paparo; Barbara, Colicchio; Miele, Erasmo; Luciano, Rapacciuolo; Troncone, Riccardo. - In: DIGESTIVE AND LIVER DISEASE. - ISSN 1590-8658. - STAMPA. - 8:43(2011), pp. 604-608. [10.1016/j.dld.2011.01.015]
Intestinal deposits of anti-tissue transglutaminase IgA in childhood celiac disease
AURICCHIO, RENATA;MIELE, ERASMO;TRONCONE, RICCARDO
2011
Abstract
Background: High serum levels of anti-tissue-transglutaminase-2 IgA antibodies (anti-TG2), which are produced and deposited in the intestine, characterize celiac disease. Aim: To assess the diagnostic value of intestinal deposits of anti-TG2 IgA for celiac disease in a paediatric population. Methods: 344 children underwent duodenal biopsy for the suspicion of CD, and were divided into 3 groups: group A, 144 celiac subjects with villous atrophy (Marsh 3b–c); group B, 109 subjects with high serum levels of anti-TG2 but normal intestinal mucosa (Marsh 0–1) (potential celiac disease patients); group C, 91 subjects with normal levels of serum anti-TG2: 70 with Marsh 0–1 and 21 with Marsh 3a mucosa. All duodenal sections were evaluated for the presence of intestinal deposits of anti-TG2 IgA by double immunofluorescence. Results: Deposits of anti-TG2 IgA were present in 96%, 68%, 12% of patients from groups A, B, C, respectively. Diagnostic sensitivity and specificity for celiac disease were 96% and 88% vs. 97% and 100% for serum anti-TG2, respectively. The degree of concordance with serum anti-TG2 was 85%. Conclusion: Detection of intestinal deposits of anti-TG2 IgA is a useful diagnostic tool. Further research is needed regarding their ability to predict evolution to villous atrophy in potential celiac disease.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
