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Chromogranin A: a novel regulator of parathyroid gland secretion. 1995

D V Cohn, and B H Fasciotto, and B K Reese, and J X Zhang
Department of Biological and Biophysical Sciences, University of Louisville, KY 40292, USA.

Chromogranin A (CgA) is a major protein of the parathyroid gland that is costored and cosecreted with parathyroid hormone (PTH). CgA, widely distributed in endocrine and neuroendocrine cells in addition to parathyroid cells, appears to be a precursor of biologically active autocrine or paracrine peptides that include pancreastatin (CgA240-288) and parastatatin (CgA347-419), compounds that strongly inhibit stimulated secretion of PTH and costored CgA. The biosynthesis of CgA and PTH via gene expression and mRNA translation are noncoordinately altered by agents that affect parathyroid cell secretion including 1,25 dihydroxycholecalciferol, dexamethasone and Ca2+. These data have been interpreted to support an important physiological role for CgA-derived peptides as autocrine, paracrine and endocrine agents in the regulation of parathyroid cell function and secretion.

UI MeSH Term Description Entries
D010187 Pancreatic Hormones Peptide hormones secreted into the blood by cells in the ISLETS OF LANGERHANS of the pancreas. The alpha cells secrete glucagon; the beta cells secrete insulin; the delta cells secrete somatostatin; and the PP cells secrete pancreatic polypeptide. Hormones, Pancreatic
D010280 Parathyroid Glands Two pairs of small oval-shaped glands located in the front and the base of the NECK and adjacent to the two lobes of THYROID GLAND. They secrete PARATHYROID HORMONE that regulates the balance of CALCIUM; PHOSPHORUS; and MAGNESIUM in the body. Gland, Parathyroid,Glands, Parathyroid,Parathyroid Gland
D010281 Parathyroid Hormone A polypeptide hormone (84 amino acid residues) secreted by the PARATHYROID GLANDS which performs the essential role of maintaining intracellular CALCIUM levels in the body. Parathyroid hormone increases intracellular calcium by promoting the release of CALCIUM from BONE, increases the intestinal absorption of calcium, increases the renal tubular reabsorption of calcium, and increases the renal excretion of phosphates. Natpara,PTH (1-84),PTH(1-34),Parathormone,Parathyrin,Parathyroid Hormone (1-34),Parathyroid Hormone (1-84),Parathyroid Hormone Peptide (1-34),Hormone, Parathyroid
D010446 Peptide Fragments Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques. Peptide Fragment,Fragment, Peptide,Fragments, Peptide
D002864 Chromogranins A group of acidic proteins that are major components of SECRETORY GRANULES in the endocrine and neuroendocrine cells. They play important roles in the aggregation, packaging, sorting, and processing of secretory protein prior to secretion. They are cleaved to release biologically active peptides. There are various types of granins, usually classified by their sources. Chromogranin,Granin,Secretogranin,Secretogranins,Granins
D003907 Dexamethasone An anti-inflammatory 9-fluoro-glucocorticoid. Hexadecadrol,Decaject,Decaject-L.A.,Decameth,Decaspray,Dexasone,Dexpak,Hexadrol,Maxidex,Methylfluorprednisolone,Millicorten,Oradexon,Decaject L.A.
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D053379 Chromogranin A A type of chromogranin which was first isolated from CHROMAFFIN CELLS of the ADRENAL MEDULLA but is also found in other tissues and in many species including human, bovine, rat, mouse, and others. It is an acidic protein with 431 to 445 amino acid residues. It contains fragments that inhibit vasoconstriction or release of hormones and neurotransmitter, while other fragments exert antimicrobial actions. CHGA Protein,Parathyroid Secretory Protein,Secretory Protein I, Parathyroid Gland,Secretory Protein, Parathyroid

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