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  • Title: Circulating thyroid antibodies in congenital hypothyroidism.
    Author: Ilicki A, Larsson A, Karlsson FA.
    Journal: Acta Paediatr Scand; 1991; 80(8-9):805-11. PubMed ID: 1659767.
    Abstract:
    The role of maternal thyroid antibodies in congenital hypothyroidism is controversial. We have analysed serum thyroid antibodies in patients and their mothers. In a bioassay, antibodies interacting with thyroid cells were analysed by measuring of TSH-stimulated cAMP production in a rat thyroid cell line, FRTL5. Serum antibodies against the TSH receptor, thyroid peroxidase and thyroglobulin were determined by radioreceptor assay and enzyme-linked immunosorbent assays. The bioassay was performed with IgG preparations from 89 mothers of children with congenital hypothyroidism. Analyses for TSH receptor antibodies and thyroid peroxidase/thyroglobulin antibodies were performed on 144 and 118 sera of newborn patients respectively. No evidence of an increased prevalence of thyroid antibodies was found on comparison with controls. One infant had transient neonatal hyperthyrotropinaemia because of TSH receptor blocking antibodies transferred from the mother. Our data indicate that, apart from transplacental transfer of TSH receptor antibodies, maternal immunoglobulins have a limited role in the aetiology of congenital thyroid dysfunction.
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