Thyroid

A goitre (British English), or goiter (American English), is a swelling in the neck resulting from an enlarged thyroid gland. A goitre can be associated with a thyroid that is not functioning properly.

Hyperthyroidism is a endocrine disease in which the thyroid gland produces excessive amounts of thyroid hormones. Thyrotoxicosis is a condition that occurs due to elevated levels of thyroid hormones of any cause and therefore includes hyperthyroidism. Some, however, use the terms interchangeably. Signs and symptoms vary between people and may include irritability, muscle weakness, sleeping problems, a fast heartbeat, heat intolerance, diarrhea, enlargement of the thyroid, hand tremor, and weight loss. Symptoms are typically less severe in the elderly and during pregnancy. An uncommon but life-

family of glycoprotein hormones in vertebrata

Thyroxine, also known as T4, is a hormone produced by the thyroid gland. It is the primary form of thyroid hormone found in the blood and acts as a prohormone of the more active thyroid hormone, triiodothyronine (T3). Thyroxine and its active metabolites are essential for regulating metabolic rate, supporting heart and muscle function, promoting brain development, and maintaining bone health.

hormones produced by the thyroid gland

hormone

Thyroglobulin (Tg) is a 660 kDa, dimeric glycoprotein produced by the follicular cells of the thyroid and used entirely within the thyroid gland. Tg is secreted and accumulated at hundreds of grams per litre in the extracellular compartment of the thyroid follicles, accounting for approximately half of the protein content of the thyroid gland. Human TG (hTG) is a homodimer of subunits each containing 2768 amino acids as synthesized (a short signal peptide of 19 amino acids may be removed from the N-terminus in the mature protein).

artery

enzyme

Transthyretin (TTR or TBPA) is a transport protein in the plasma and cerebrospinal fluid that transports the thyroid hormone thyroxine (T4) and retinol to the liver. This is how transthyretin gained its name: transports thyroxine and retinol. The liver secretes TTR into the blood, and the choroid plexus secretes TTR into the cerebrospinal fluid.

neuroendocrine cells in the thyroid gland which secrete calcitonin

thyroid eye disease often associated with Graves' disease

endocrine disease

artery of the neck

pair of enantiomers

mammalian protein found in Homo sapiens

type of cell that forms the lining of thyroid follicles

variably present artery that provides blood to the thyroid gland

rare form of monodermal teratoma that contains mostly thyroid tissue, which may cause hyperthyroidism

Thyronamine is a type of decarboxylated and deiodinated metabolite of the thyroid hormones thyroxine (T4) and 3,5,3'-triiodothyronine (T3). The word thyronamine can refer to either the family of molecules, or the specific molecule from which they are derived.

3-Iodothyronamine (T1AM) is an endogenous thyronamine. It is a high-affinity ligand of the trace amine-associated receptor 1 (TAAR1). T1AM is the most potent endogenous TAAR1 agonist yet discovered. It is also an agonist of the TAAR2 and TAAR5 with similar potency as for the TAAR1 (all in the case of the human proteins). T1AM is not a ligand of the thyroid hormone receptors. However, it is additionally a ligand of various monoamine and other receptors. For instance, it is a muscarinic acetylcholine receptor antagonist.

effect

Dextrothyroxine (trade name Choloxin) is a dextrorotary isomer of thyroxine. It saw research as a cholesterol-lowering drug but was pulled due to cardiac side-effects. It increases hepatic lipase which in turn improves utilization of triglycerides and decreases levels of lipoprotein(a) in blood serum.

'''3,3',5-Triiodothyronamine''' is a thyronamine.

Human disease

Deiodinase (monodeiodinase) is a peroxidase enzyme that is involved in the activation or deactivation of thyroid hormones.

Antibodies targeted against the thyroid

a tablet to prevent the accumulation of radioactive material in the body

classification system for cervical neoplasia, named after the town in Maryland

blood vessels

mammalian protein found in Homo sapiens

Liotrix is a 4:1 mixture of thyroxine (T4) and triiodothyronine (T3) made synthetically. It is used to replenish thyroid hormones in thyroid deficiency and hypothyroidism. The only brand of liotrix available in the U.S. is Thyrolar, manufactured by Forest Laboratories.

blood vessel

human disease

medical subspecialty

Thyroid gland prepared for medical use

Mu-crystallin homolog also known as NADP-regulated thyroid-hormone-binding protein (THBP) is a protein that in humans is encoded by the CRYM gene. Multiple alternatively spliced transcript variants have been found for this gene.