Triiodothyronine


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Triiodothyronine

 

(3,5,3’-triiodothyronine), an animal and human hormone formed in the follicles of the thyroid gland by the oxidative condensation of monoiodotyrosine and diiodotyro-sine.

Like the other thyroid hormone, thyroxine, triiodothyronine has a multiple, varied effect on the organism and on the organism’s growth, differentiation, and metabolism. It is secreted into the blood in significantly smaller amounts than thyroxine, but its effect on metabolism is more rapid, since it is less strongly bound to specific plasma proteins and thus enters the tissue fluid and cells more easily.

References in periodicals archive ?
Low serum free triiodothyronine levels are associated with the presence and severity of coronary artery disease in the euthyroid patients: an observational study.
The free Triiodothyronine T3 measurements showed no significant difference between the breast cancer groups, fibrocystic group and the normal healthy control group (p > 0.05).
Abbreviations AMI: Acute myocardial infarction T3: Triiodothyronine FT3: Free triiodothyronine T4: Thyroxine FT4: Free thyroxine TSH: Thyroid-stimulating hormone TGAB: Thyroglobulin TMAB: Thyroid microsomal antibody EF: Cardiac ejection fraction NT-proBNP: N-terminal probrain natriuretic peptide MACE: Major adverse cardiovascular events GRACE: The Global Registry of Acute Coronary Events HR: Heart rate CKMB: MB isoenzyme of creatine kinase HbA1c: Hemoglobin A1c BP: Blood pressure AST: Aspartate transaminase CHF: Chronic heart failure PCI: Percutaneous coronary intervention CABG: Coronary artery bypass graft CCB: Calcium channel blocker.
Bhasipol, "Differentiating Graves' disease from subacute thyroiditis using ratio of serum free triiodothyronine to free thyroxine," Annals of Medicine & Surgery, vol.
Sener (2013).The heat strees effect on T4 (thyroxine), T3 (triiodothyronine), cortisol hormones of goats in rearing extensive systems.
Then a blood sample was obtained from each participant and transferred to the laboratory of the Persian Gulf Tropical Medicine Research Center, where plasma total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), TSH, thyroxine (T4), and triiodothyronine (T3) levels were determined.
'We also found that blood tests commonly performed to assess thyroid function, including thyroid stimulating hormone (TSH) levels and two distinct thyroid hormones called thyroxine (T4) and triiodothyronine (T3), are associated with the severity of heart failure,' Kannan said.
These result in a reduction of activity of thyroid gland and hence decrease in triiodothyronine (T3) and thyroxine (T4).
C[H.sub.4] emission from sheep is positively correlated with mean retention time (MRT) of digesta, which is known to be influenced by the hormone triiodothyronine (Barnett et al., 2012; 2015).
It is more common in women than men and is linked to the thyroid gland and the overproduction of the thyroid hormones thyroxine (T4) and triiodothyronine (T3) caused by auto-antibodies.
Thyroid function studies indicated thyroid stimulating hormone <0.01 mlU/mL (normal range = 0.27-4.20 mIU/ml), triiodothyronine (T3) >32.5 pg/mL (normal range = 1.80-4.60 pg/mL), and thyroxine ([T.sub.4]) >7.8 ng/dL (normal range = 0.9-1.8 ng/dL).
Thyroid tests should be obtained before the medication is taken because triiodothyronine ([T.sub.3]) levels rise abruptly in response to a dose.