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Childhood thyroid autoimmunity and relation to islet autoantibodies in children at risk for type 1 diabetes in the diabetes prediction in skåne (DiPiS) study
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- Jonsdottir, Berglind (author)
- Lund University,Lunds universitet,Pediatrisk endokrinologi,Forskargrupper vid Lunds universitet,Paediatric Endocrinology,Lund University Research Groups,Skåne University Hospital
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- Larsson, Christer (author)
- Lund University,Lunds universitet,Institutionen för laboratoriemedicin,Medicinska fakulteten,Department of Laboratory Medicine,Faculty of Medicine
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- Lundgren, Markus (author)
- Lund University,Lunds universitet,Pediatrisk endokrinologi,Forskargrupper vid Lunds universitet,Paediatric Endocrinology,Lund University Research Groups,Skåne University Hospital
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- (creator_code:org_t)
- 2018-11-28
- 2018
- English 10 s.
- In: Autoimmunity. - : Informa UK Limited. - 0891-6934 .- 1607-842X. ; 51:5, s. 228-237
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Background: The aim was to determine prevalence and age at seroconversion of thyroid autoimmunity in relation to islet autoantibodies, gender and HLA-DQ genotypes in children with increased risk for type 1 diabetes followed from birth. Methods: In 10-year-old children (n = 1874), blood samples were analysed for autoantibodies against thyroid peroxidase (TPOAb), thyroglobulin (TGAb), glutamic acid decarboxylase 65 (GADA), Zink transporter 8 (ZnT8R/W/QA), insulinoma-associated protein-2 (IA-2A), insulin (IAA) and HLA-DQ genotypes. Prospectively collected samples from 2 years of age were next analysed for TPOAb, and TGAb and, finally, in confirming samples at 11–16 years of age along with TSH and FT4. Frequencies were tested with Chi-square or Fischer’s exact tests, autoantibody levels with Wilcoxon and correlations between autoantibody levels with Spearman’s rank correlation test. Results: The prevalence of thyroid autoimmunity was 6.9%, overrepresented in girls (p <.001) also having higher TPOAb levels at 10 years (p =.049). TPOAb was associated with GADA (p =.002), ZnT8R/W/QA (p =.001) and IA-2A (p =.001) while TGAb were associated with ZnT8R/W/QA (p =.021). In boys only, TPOAb were associated with GADA (p =.002), IA-2A (p =.001), ZnT8R/W/QA (p =.001) and IAA (p =.009), and TGAb with GADA (p =.013), IA-2A (p =.005) and ZnT8R/W/QA (p =.003). Levels of IA-2A correlated to both TPOAb (p =.021) and to TGAb (p =.011). In boys only, levels of GADA and TGAb correlated (p =.009 as did levels of IA-2A and TPOAb (p =.013). The frequency and levels of thyroid autoantibodies increased with age. At follow-up, 22.3% had abnormal thyroid function or were treated with thyroxine. Conclusions: Thyroid autoimmunity and high TPOAb levels were more common in girls. In contrast, in boys only, there was a strong association with as well as correlation between levels of thyroid and islet autoantibodies. It is concluded that while girls may develop autoimmune thyroid disease (AITD) independent of islet autoantibodies, the risk for thyroid disease in boys may be linked to concomitant islet autoimmunity.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Pediatrik (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Pediatrics (hsv//eng)
Keyword
- autoimmune thyroid disease
- HLA-DQ genotypes
- islet autoantibodies
- seroconversion
- Thyroid autoantibodies
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- art (subject category)
- ref (subject category)
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