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Article
June 1981

Hypothyroidism, Triiodothyronine Antibodies, and Hyperprolactinemia

Author Affiliations

From the Departments of Medicine (Drs Henry and Faiman), Obstetrics and Gynaecology (Dr Reyes), and Physiology (Dr Faiman), University of Manitoba, and the Endocrine-Metabolism Laboratory, Health Sciences Centre, Winnipeg, Manitoba, Canada.

Arch Intern Med. 1981;141(7):953-955. doi:10.1001/archinte.1981.00340070133031
Abstract

• This report describes the development of triiodothyronine (T3) antibodies in a patient with Hashimoto's thyroiditis that resulted in compensated hypothyroidism and hyperprolactinemia. The patient, a 23-year-old woman, had a small goiter, modest elevation of thyrotropin (TSH) and prolactin (PRL) levels, and a markedly elevated T3 level. Circulating antibodies to T3 were demonstrated that presumably rendered the T, physiologically inactive. Saturation of antibody binding sites by incremental dosages of liothyronine (triiodothyronine) sodium (12.5 to 87.5 μg/day) resulted in normalization of both the TSH and PRL levels.

(Arch Intern Med 1981;141:953-955)

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