Complete iodide trapping defect in two cases with congenital hypothyroidism: adaptation of thyroid to huge iodide supplementation
| Autor: | A. Aurengo, C. Courpotin, F. A. Leger, N. Davous, J. C. Savoie, O. B. Helal, R. Doumith |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
Male
endocrine system medicine.medical_specialty Saliva Adolescent endocrine system diseases Clinical Biochemistry Iodide Thyroid Gland Thyrotropin Biochemistry Iodine Radioisotopes Hypothyroidism Internal medicine Congenital Hypothyroidism Humans Medicine Sodium Pertechnetate Tc 99m chemistry.chemical_classification Gastric Juice Triiodothyronine business.industry Stomach Thyroid General Medicine Iodides medicine.disease Congenital hypothyroidism Kinetics Thyroxine Endocrinology medicine.anatomical_structure chemistry Ventricle Child Preschool Female business |
| Zdroj: | European Journal of Clinical Investigation. 17:249-255 |
| ISSN: | 1365-2362 0014-2972 |
| Popis: | Two cases of congenital defect in iodide trapping mechanism are related. The absence of thyroid and gastric concentration of 99mTcO4 led to the diagnosis. The study of saliva and gastric:serum concentration ratios confirmed the complete defect. The kinetics of radioiodine studied by external detection showed an early simultaneous decay in the thyroid, the stomach and the left ventricle. Thyroid accumulation of 131I, demonstrated by camera imaging, was estimated to be 0.1% at 48 h. It probably originated from simple diffusion. Iodide supplementation was progressively increased to 4.5 g and 10 g day-1 respectively. It resulted in a normalization of all parameters. Huge doses of iodide did not result in any evidence of hyperthyroidism as TSH rose normally after TRH. Intermittent iodide supplementation in one case could not maintain euthyroidism longer than a few weeks. Daily treatment, therefore, seems necessary. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text