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delta cell

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Wikipedia

  1. Delta cell

    Delta cells (δ-cells or D cells) are somatostatin-producing cells. They can be found in the stomach, intestine and the pancreatic islets. Delta cells comprise ca 5% of the cells in the islets but may interact with many more islet cells than suggested by their low numbers. In rodents, delta-cells are located in the periphery of the islets; in humans the islet architecture is generally less organized and delta-cells are frequently observed inside the islets as well. In both species, the peptide hormone Urocortin III (Ucn3) is a major local signal that is released from beta cells (and alpha cells in primates) to induce the local secretion of somatostatin. It has also been suggested that somatostatin may be implicated in insulin-induced hypoglycaemia through a mechanism involving SGLT-2 receptors. Ghrelin can also strongly stimulate somatostatin secretion, thus indirectly inhibiting insulin release. Viewed under an electron microscope, delta-cells can be identified as cells with smaller and slightly more compact granules than beta cells.The δ-cells in the stomach contain CCKBR (which respond to gastrin) and M3 receptors (which respond to Ach). Respectively, these receptors will increase somatostatin output and decrease somatostatin output from the δ-cells. VIP, vasoactive intestinal peptide, acts positively on δ-cells resulting in more somatostatin being released. In the stomach, somatostatin acts directly on the acid-producing parietal cells via a G-protein coupled receptor (which inhibits adenylate cyclase, thus effectively antagonising the stimulatory effect of histamine) to reduce acid secretion. Somatostatin can also indirectly decrease stomach acid production by preventing the release of other hormones, including gastrin, secretin and histamine which effectively slows down the digestive process.

Wikidata

  1. Delta cell

    Delta cells are somatostatin-producing cells. They can be found in the stomach, intestine and the Islets of Langerhans in the pancreas. In rodents, delta-cells are located in the periphery of the islets; in humans the islet architecture is generally less organized and delta-cells are frequently observed inside the islets as well. In the electron microscope, delta-cells can be identified as cells with smaller and slightly more compact granules than beta cells. D cells contain CCKBR and M3 receptors. Respectively, these receptors will increase somatostatin output and decrease somatostatin output from the D cells. VIP, vasoactive intestinal peptide, acts positively on D cells resulting in more somatostatin being released.

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Numerology

  1. Chaldean Numerology

    The numerical value of delta cell in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of delta cell in Pythagorean Numerology is: 2

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"delta cell." Definitions.net. STANDS4 LLC, 2024. Web. 5 Nov. 2024. <https://www.definitions.net/definition/delta+cell>.

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