• 제목/요약/키워드: Tissue transglutaminase

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Celiac Disease in South Jordan

  • Altamimi, Eyad
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제20권4호
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    • pp.222-226
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    • 2017
  • Purpose: Celiac disease, an autoimmune enteropathy triggered by exposure to gluten, is not uncommon in South Jordan. However, its prevalence is underestimated due to lack of physician awareness of the diversity of disease presentation. The clinical spectrum includes classic gastrointestinal manifestations, as well as rickets, iron-deficiency anemia, short stature, elevated liver enzymes, and edema. Our goal was to evaluate celiac disease presentation in clinically diagnosed children. Methods: Retrospective study included all children diagnosed with celiac disease between September 2009 and September 2015. Hospital charts were reviewed. Demographic data, clinical characteristics, and follow-up were recorded. Results: Thirty-five children were diagnosed with celiac disease during the study period. Mean age${\pm}$standard deviation was $6.7{\pm}3.8$ years (range, 2.0-14 years). There were 17 (48.6%) female patients. The average duration between onset of symptoms and diagnosis was $16.3{\pm}18.7$ months. Fifteen (42.9%) patients presented with classic malabsorption symptoms, whereas 7 (20.0%) patients presented with short stature. Positive tissue transglutaminase antibodies (tTg)-immunoglobulin A (IgA) was seen in 34 (97.1%) patients. The one patient with negative tTg-IgA had IgA deficiency. Although tTG-IgA values were not available for objective documentation of compliance, clinical data (resolution of presenting abnormalities and growth improvement) assured acceptable compliance in 22 (62.9%) patients. Conclusion: CD in children may present with diverse picture. Although of the small number, the non-classical presentations are not uncommon in our rural community. Gluten-free diet is the main strategy for treatment and associated with usually correction of laboratory abnormalities and improvement of growth.

Influence of Age and Type 1 Diabetes Mellitus on Serological Test for Celiac Disease in Children

  • Maheshwari, Anshu;He, Zhaoping;Weidner, Melissa Nicole;Lin, Patrick;Bober, Ryan;Del Rosario, Fernando J.
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제24권2호
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    • pp.218-229
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    • 2021
  • Purpose: Serological tests of tissue transglutaminase (TTG) and deamidated gliadin (DGP) antibodies for celiac disease diagnosis show conflicting correlation with histology in young children and in type 1 diabetes mellitus (T1DM). Tests' ability to predict histology and cutoff values based on age and T1DM was evaluated. Methods: A retrospective study of children who had celiac serological tests between 6/1/2002 and 12/31/2014 at a pediatric hospital. Results: TTG IgA displayed similar results in predicting histology between <4.0 and ≥4.0 years age groups with sensitivity 98% and 93%, and specificity 88% and 86%, respectively. In children <4.0 years old, sensitivity for DGP antibodies was 100% and specificity 94%; in ≥4.0 years age groups, sensitivity was 60%, 88% for DGP IgA and IgG and specificity 95%, 96%, respectively. TTG IgA had low specificity in patients with T1DM compared with non-T1DM, 42% vs. 91%. Positive TTG IgA with normal histology was associated with higher T1DM prevalence at 36% compared with negative tests at 4%. Finally, the TTG IgA cutoff value was higher in T1DM at 36 vs. 16.3 units in non-T1DM. DGP IgG cutoff showed similar values between age groups; TTG IgA and DGP IgA cutoffs were lower in <4.0 years at 8.3 and 11.9 units than ≥4.0 years at 23.4 and 19.9, respectively. Conclusion: TTG IgA is sufficient for the <4.0 years age group and DGP antibodies had no advantage over TTG IgA in older children. The cutoff value to determine a positive TTG IgA should be higher for children with T1DM.