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Anti-natrium/Iodide Symporter Antibodies and Other Anti-thyroid Antibodies in Children with Turner’s Syndrome

  • Anna M. Kucharska
  • Barbara Czarnocka
  • Urszula Demkow
Conference paper
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 756)

Abstract

Antibodies against the Na/I symporter (anti-NIS ab) have been found in adult patients with autoimmune thyroid diseases. As easily available for the immune system, NIS can play a role in the initial stage of autoimmune thyroid diseases. Children with Turner’s syndrome (TS) being at high risk of autoimmune thyroid disease development seem a valuable group for the investigation of the early autoimmune process. The aim of the study was to investigate the presence of anti-NIS ab and its potential clinical significance in TS children. Fifty four girls with TS were examined (age 11.9 ± 2.46 years), and 23 healthy girls with normal thyroid function, free of autoimmune diseases. Anti-NIS antibodies were measured by the in-house ELISA method and the Western blotting. Sera considered positive for anti-NIS ab were used for the iodide uptake bioassay using COS7 cells stably transfected with hNIS. In all patients the thyroid function, antithyroid antibodies presence and thyroid ultrasonography were evaluated. In 20% of the patients a subclinical hypothyroidism was diagnosed and 70.4% had antithyroid antibodies (anti-TPO – 64.8% and Anti-Tg – 24%). Anti-NISab were present in 14.8% girls with TS and in none of the control group. Their presence was unrelated to other antithyroid antibodies titre or patients’ age. A positive correlation between the anti-NIS ab presence and the hypothyroidism was found (p < 0.04). Anti-NIS ab-positive sera did not suppress iodine uptake. In conclusion, anti-NIS antibodies were present in 14.8% of children with TS and they were related to the presence of hypothyroidism.

Keywords

Autoantibodies Autoimmune thyroiditis Children Na/I symporter Turner’s syndrome 

Notes

Acknowledgement

We wish to thank Prof. Nancy Carrasco of the Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York for the gift of the plasmid containing full length human NIS cDNA. The authors also thank Dr Cornelia Rinderle of the BRAHMS Diagnostica GmbH Henningsdorf in Berlin for the evaluation of iodide uptake in bioassay.

Conflicts of interest: The authors declare no conflicts of interest in relation to this article.

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Anna M. Kucharska
    • 1
  • Barbara Czarnocka
    • 2
  • Urszula Demkow
    • 3
  1. 1.Department of Paediatrics and EndocrinologyMedical University of WarsawWarsawPoland
  2. 2.Department of BiochemistryMedical Center of Postgraduate EducationWarsawPoland
  3. 3.Department of Laboratory Diagnostics and Clinical Immunology of the Developmental AgeMedical University of WarsawWarsawPoland

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