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Impact of Thyroid Autoimmunity on Thyroid Function in 12-year-old Children With Celiac Disease
Umea Univ, Sweden.
Lund Univ, Sweden.
Umea Univ, Sweden.
Praktikertjanst, Sweden.
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2018 (English)In: Journal of Pediatric Gastroenterology and Nutrition - JPGN, ISSN 0277-2116, E-ISSN 1536-4801, Vol. 67, no 1, p. 64-68Article in journal (Refereed) Published
Abstract [en]

Objectives: Celiac disease (CD) is associated with thyroid autoimmunity and other autoimmune diseases. Data are, however, lacking regarding the relationship between thyroid autoimmunity and thyroid function, especially in regard to CD. Our aim was to investigate the impact of thyroid autoimmunity on thyroid function in 12-year-old children with CD compared to their healthy peers. Methods: A case-referent study was conducted as part of a CD screening of 12-year-olds. Our study included 335 children with CD and 1695 randomly selected referents. Thyroid autoimmunity was assessed with antibodies against thyroid peroxidase (TPOAb). Thyroid function was assessed with thyroid-stimulating hormone and free thyroxine. Results: TPOAb positivity significantly increased the risk of developing hypothyroidism in all children. The odds ratios (with 95% confidence intervals) were 5.3 (2.7-11) in healthy 12-year-olds, 10 (3.2-32) in screening-detected CD cases, 19 (2.6-135) in previously diagnosed CD cases, and 12 (4.4-32) in all CD cases together. Among children with TPOAb positivity, hypothyroidism was significantly more common (odds ratio 3.1; 95% CI 1.03-9.6) in children with CD (10/19) than in children without CD (12/46). Conclusions: The risk of thyroid dysfunction due to thyroid autoimmunity is larger for those with CD than their healthy peers. Our study indicates that a gluten-free diet does not reduce the risk of thyroid dysfunction. Further studies are required for improved understanding of the role of the gluten-free diet for the risk of autoimmune diseases in children with CD.

Place, publisher, year, edition, pages
LIPPINCOTT WILLIAMS & WILKINS , 2018. Vol. 67, no 1, p. 64-68
Keywords [en]
autoimmune diseases; Exploring the Iceberg of Celiacs in Sweden study; population-based study; screening
National Category
Pediatrics
Identifiers
URN: urn:nbn:se:liu:diva-150498DOI: 10.1097/MPG.0000000000001903ISI: 000441421500019PubMedID: 29373441OAI: oai:DiVA.org:liu-150498DiVA, id: diva2:1241679
Note

Funding Agencies|Swedish Research Council [521-2004-7093, 521-2007-2953]; Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning [222-2004-1918, 222-2007-1394]; Swedish Council for Working Life and Social Research [2005-0802]; European Union [FP6-2005-FOOD-4B-36383-PREVENTCD]; FAS, the Swedish Council for Working Life and Social Research

Available from: 2018-08-24 Created: 2018-08-24 Last updated: 2018-08-24

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Högberg, Lotta
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Division of Children's and Women's healthFaculty of Medicine and Health SciencesDepartment of Paediatrics in Norrköping
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