Thyroid hormone and immunological studies in endemic goiter.
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| Abstract |
Iodized oil (1 ml im) was given to 58 goitrous patients from a mildly iodine-deficient area in Greece. Goiter size, urinary iodine, and serum T4, T3RU, T3, rT3, TSH, thyroxine-binding globulin (TBG), and thyroid autoantibodies were measured before and 1, 3, and 6 months after the injection. Goiter size decreased. Serum T4 remained relatively constant, but TBG decreased and therefore T3RU and FTI increased. Serum T3 and rT3 initially decreased (P less than 0.001) and then increased at the sixth month (P less than 0.001), both showing roughly parallel changes. Serum TSH, initially normal (1.42 +/- 0.11 (SEM) mU/liter), decreased to 0.65 +/- 0.01 and 0.76 +/- 0.05 mU/liter at the third and sixth month (difference from baseline P less than 0.001). Thyroid autoantibodies, both against thyroglobulin and the microsomal antigen, were undetectable before treatment, but became positive in 42.8% of the patients 3 and 6 months later. Three patients developed transient hyperthyroidism. This occurred 3 or 6 months after treatment, and was associated with high titers of thyroid autoantibodies. These results indicate that: 1) transient hyperthyroidism may occur after the administration of iodized oil, possibly because of thyroid tissue necrosis and leakage of hormones, and 2) serum TBG decreases after iodized oil, a finding not previously reported and one whose cause is not known.
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| Authors | M A Boukis, D A Koutras, A Souvatzoglou, A Evangelopoulou, M Vrontakis, S D Moulopoulos |
| Journal | The Journal of clinical endocrinology and metabolism (J Clin Endocrinol Metab) Vol. 57 Issue 4 Pg. 859-62 (Oct 1983) ISSN: 0021-972X [Print] United States |
| PMID | 6309889 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
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