thyroid hormone


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Thyroid hormone

Any of the chemical messengers produced by the thyroid gland, including thyrocalcitonin, a polypeptide, and thyroxine and triiodothyronine, which are iodinated thyronines. See Hormone, Thyrocalcitonin, Thyroid gland, Thyroxine

McGraw-Hill Concise Encyclopedia of Bioscience. © 2002 by The McGraw-Hill Companies, Inc.

thyroid hormone

[′thī‚rȯid ′hȯr‚mōn]
(biochemistry)
Commonly, thyroxine or triiodothyronine, or both; a metabolically active compound formed and stored in the thyroid gland which functions to regulate the rate of metabolism.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Pantos, "Inhibition of thyroid hormone receptor [alpha]1 impairs post-ischemic cardiac performance after myocardial infarction in mice," Molecular and Cellular Biochemistry, vol.
Lean body mass is a predictor of the daily requirement for thyroid hormone in older men and women.
The exact cause of changes in thyroid hormone levels observed in ESS remains controversial and undermined.
In our study, we have observed that thyroid hormone levels (T3, T4) are decreased in neonates having severe hyperbilirubinemia, though statistically significant correlation is not noted, but alteration in levels in thyroid hormones is seen in severe hyperbilirubinemia.
As a result of the applied Friedman test, there occurs a significant difference between aggressive behaviors of the athletes and thyroid hormone values (p <0.05).
It has been reported that salivary glands at least in experimental animals are closely linked with various endocrine organs and disturbance of endocrine glands can affect the morphological or functional aspects of the salivary glands.7 Thyroid hormone is produced by the follicular cells of the thyroid gland through iodination of thyrosine residues in the glycoprotein thyroglobulin.8 3, 3, 5-triiodo-L-thyronine (T3) is the meta-bolically active form of the thyroid hormone.This hormone plays important roles in normal growth and development, neural differentiation, inflammation, proliferation and metabolic regulation in mammals.9 It is involved in regulation of many physiological processes that can differ between tissues or developmental stages or in response to environmental ques.
The reason of thyrotoxicosis for this SHPT patient after total parathyroidectomy may be that thyroid hormones stored in the thyroid were excessively released into the blood circulation due to mechanical irritation during operation.
When the thyroid gland produces too much thyroid hormone (overactive), the condition is called hyperthyroidism.
Thyroxine ([T.sub.4]), the major form of thyroid hormone, and triiodothyronine ([T.sub.3]), the active form, are controlled by thyroid-stimulating hormone (TSH) and released by the thyroid gland.

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