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Potent thyrotrophin receptor-blocking antibodies: a cause of transient congenital hypothyroidism and delayed thyroid development

Evans, Carol, Jordan, Nicola, Owens, G., Bradley, D., Ludgate, Marian Elizabeth and John, R. 2004. Potent thyrotrophin receptor-blocking antibodies: a cause of transient congenital hypothyroidism and delayed thyroid development. European Journal of Endocrinology 150 (3) , pp. 265-268. 10.1530/eje.0.1500265

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Abstract

OBJECTIVE: We describe an infant with surprisingly severe neonatal hypothyroidism due to transplacental passage of thyrotrophin receptor (TSH-R)-blocking antibodies (TBAb). DESIGN AND METHODS: TBAb were detected using a cell line which stably expresses the human TSH-R and a cAMP-responsive luciferase reporter by their ability to inhibit TSH-stimulated luciferase expression. Potent TBAb were detected in maternal serum and initially in the infant's serum but, in the latter, TBAb decreased over time to within the reference range by 3-4 months of age, illustrating the transient nature of this condition. RESULTS: The thyroid function of this child did not return to normal on withdrawal of thyroxine therapy at 16 months of age when he developed transient compensated hypothyroidism. CONCLUSIONS: We propose that the presence of potent TBAb in utero and in the first weeks of life may have implications for the development of a normally sized thyroid gland. We have demonstrated the presence of TBAb in the mother's milk and, as far as we are aware, this is the first such report. However, the TBAb in the milk probably did not contribute significantly to hypothyroidism in the child, given the reducing antibody titre in his circulation.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > RC Internal medicine
R Medicine > RM Therapeutics. Pharmacology
Publisher: European Society of Endocrinology
ISSN: 0804-4643
Last Modified: 04 Jun 2017 04:54
URI: http://orca.cf.ac.uk/id/eprint/46360

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