triiodothyronine

tri·io·do·thy·ro·nine .trī-.ī-əd-ō-'thī-rə-.nēn n a crystalline iodine-containing hormone C15H12I3NO4 that is an amino acid derived from thyroxine and is used esp. in the form of its soluble sodium salt C15H11I3NNaO4 in the treatment of hypothyroidism and metabolic insufficiency called also liothyronine, T3

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n.
one of the hormones synthesized and secreted by the thyroid gland (see thyroid hormone). A preparation of triiodothyronine (liothyronine) is administered by mouth or injection for treating underactivity of the thyroid.

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tri·io·do·thy·ro·nine (T3) (tri-i″o-do-thiґro-nēn) 3,5,3′-triiodothyronine, an iodine-containing thyroid hormone secreted in smaller amounts than thyroxine; most circulating triiodothyronine is produced by the deiodination of thyroxine in the peripheral tissues, chiefly the liver. It has several times the biological activity of thyroxine and is the “tissue-active” form of thyroid hormone.

Medical dictionary. 2011.

Look at other dictionaries:

  • Triiodothyronine — Général DCI triiodothyronine Nom IUPAC acide (R,S) …   Wikipédia en Français

  • triiodothyronine — triiodothyronine. См. трииодотиронин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • triiodothyronine — [trī ī΄ə dō thī′rə nēn΄] n. [ TRI + IODO + THYR(O) + INE3] a crystalline hormone, C15H12I3NO4, secreted by the thyroid gland, that influences the rate of general metabolic activity: used medically, esp. to treat hypothyroidism …   English World dictionary

  • Triiodothyronine — Chembox new ImageFile = Triiodothyronine.svg ImageSize = 250px ImageFile1 = T3 3D balls.png ImageSize1 = IUPACName = (2S) 2 amino 3 [4 (4 hydroxy 3 iodo phenoxy) 3,5 diiodo phenyl] propanoic acid OtherNames = triiodothyronine T3 3,3 ,5 triiodo L… …   Wikipedia

  • Triïodothyronine — Hormone thyroïdienne Les hormones thyroïdiennes, la thyroxine (= tétraiodothyronine) (T4) et la triiodothyronine (T3), sont des hormones produites par la glande thyroïde à partir d un acide aminé, la tyrosine. La condensation de deux molécules de …   Wikipédia en Français

  • triiodothyronine — Thyroid Thy roid, a. [Gr. qyreoeidh s shield shaped; qyreo s a large, oblong shield (from qy ra a door) + e i^dos form: cf. F. thyro[ i]de, thyr[ e]o[ i]de.] 1. Shaped like an oblong shield; shield shaped; as, the thyroid cartilage. [1913… …   The Collaborative International Dictionary of English

  • triiodothyronine — T3; n. the most metabolically active of the thyroid hormones, which is mostly formed in the tissues from thyroxine. A preparation of triiodothyronine (liothyronine sodium) is administered by mouth or injection for treating underactivity of the… …   The new mediacal dictionary

  • triiodothyronine — noun thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer • Syn: ↑liothyronine, ↑T • Hypernyms: ↑thyroid… …   Useful english dictionary

  • triiodothyronine — noun Etymology: tri + iod + thyronine an amino acid of which thyroxine is a derivative Date: 1952 an iodine containing hormone C15H12I3NO4 that is an amino acid derived from thyroxine …   New Collegiate Dictionary

  • triiodothyronine — /truy uy oh doh thuy reuh neen , uy od oh /, n. 1. Biochem. a thyroid hormone, C15H12I3NO4, similar to thyroxine but several times more potent. 2. Pharm. a preparation of this hormone, used in treating hypothyroidism. Abbr.: T3 [1950 55; TRI +… …   Universalium

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