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Parathyroid Glands

Gland, Parathyroid | Glands, Parathyroid | Parathyroid Gland

Two small paired endocrine glands in the region of the thyroid gland. They secrete parathyroid hormone and are concerned with the metabolism of calcium and phosphorus.

Receptors, Parathyroid Hormone

Parathyroid Hormone Receptors | Parathyroid Hormone Receptor | Receptors, Parathyroid Hormones | Parathyroid Hormones Receptors | Receptor, Parathyroid Hormone

Cell surface proteins that bind parathyroid hormone with high affinity and trigger intracellular changes which influence the behavior of cells. Parathyroid hormone receptors on bone, kidney, and gastrointestinal cells mediate the hormone's role in calcium and phosphate homeostasis.

Parathyroid Neoplasms

Cancer of Parathyroid | Parathyroid Cancer | Cancer of the Parathyroid | Neoplasms, Parathyroid | Cancer, Parathyroid | Cancers, Parathyroid | Neoplasm, Parathyroid | Parathyroid Cancers | Parathyroid Neoplasm

Tumors or cancer of the PARATHYROID GLANDS.

Parathyroid Hormones

BPTH(1-84) | PTH (1-84) | Parathormone | Parathyrin | Parathyroid Hormone | Parathyroid Hormone (1-84) | hPTH(1-84) | Hormone, Parathyroid | Hormones, Parathyroid

Polypeptide hormones (84 amino acid residues) secreted by the parathyroid glands, which promote release of calcium from bone to extracellular fluid by activating osteoblasts and inhibiting osteoclasts, indirectly promote increased intestinal absorption of calcium, and promote renal tubular reabsorption of calcium and increased renal excretion of phosphates. It is a major regulator of bone metabolism. Secretion of parathyroid hormone increases when the level of calcium in the extracellular fluid is low. Its action is opposed by calcitonin. (Dorland, 28th ed)

Teriparatide

Human Parathyroid Hormone (1-34) | hPTH (1-34) | Parathar | Parathyroid Hormone Peptide (1-34) | Teriparatide Acetate | Acetate, Teriparatide

A synthetic polypeptide that consists of the 1-34 amino-acid fragment of human parathyroid hormone, the biologically active N-terminal region. The acetate form is given by intravenous infusion in the differential diagnosis of HYPOPARATHYROIDISM and PSEUDOHYPOPARATHYROIDISM. (Reynolds JEF(Ed): Martindale: The Extra Pharmacopoeia (electronic version). Micromedex, Inc, Englewood, CO, 1995)

Salivary Gland Calculi

Salivary Gland Stones | Sialolithiasis | Sialoliths | Calculi, Salivary Gland | Calculus, Salivary Gland | Gland Calculi, Salivary | Gland Calculus, Salivary | Gland Stone, Salivary | Gland Stones, Salivary | Salivary Gland Calculus | Sialolith

Calculi occurring in a salivary gland. Most salivary gland calculi occur in the submandibular gland, but can also occur in the parotid gland and in the sublingual and minor salivary glands.

Hyperparathyroidism

Abnormally increased activity of the parathyroid glands, which may be primary or secondary (HYPERPARATHYRODISM, SECONDARY). Primary hyperparathyroidism is associated with neoplasia or hyperplasia. The excess of parathyroid hormone leads to alteration in function of bone, renal tubules, and gastrointestinal mucosa. (Dorland, 27th ed)

Harderian Gland

Gland, Harderian

A sebaceous gland that, in some animals, acts as an accessory to the lacrimal gland. The harderian gland excretes fluid that facilitates movement of the third eyelid.

Salt Gland

Rectal Gland | Gland, Rectal | Gland, Salt | Glands, Rectal | Glands, Salt | Rectal Glands | Salt Glands

A compound tubular gland, located around the eyes and nasal passages in marine animals and birds, the physiology of which figures in water-electrolyte balance. The Pekin duck serves as a common research animal in salt gland studies. A rectal gland or rectal salt gland in the dogfish shark is attached at the junction of the intestine and cloaca and aids the kidneys in removing excess salts from the blood. (Storer, Usinger, Stebbins & Nybakken: General Zoology, 6th ed, p658)

Calcitriol

1 alpha,25-Dihydroxycholecalciferol | 1 alpha,25-Dihydroxyvitamin D3 | 1,25-Dihydroxycholecalciferol | 1,25-Dihydroxyvitamin D3 | 1 alpha, 25-dihydroxy-20-epi-Vitamin D3 | 1,25(OH)2-20epi-D3 | 1,25-dihydroxy-20-epi-Vitamin D3 | MC-1288 | MC1288

The physiologically active form of vitamin D. It is formed primarily in the kidney by enzymatic hydroxylation of 25-hydroxycholecalciferol (CALCIFEDIOL). Its production is stimulated by low blood calcium levels and parathyroid hormone. Calcitriol increases intestinal absorption of calcium and phosphorus, and in concert with parathyroid hormone increases bone resorption.
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