gastrin

gastrin
gas·trin 'gas-trən n any of various polypeptide hormones that are secreted by the gastric mucosa and induce secretion of gastric juice

* * *

n.
a hormone produced in the mucous membrane of the pyloric region of the stomach (see G-cell). Its secretion is stimulated by the presence of food. It is circulated in the blood to the rest of the stomach, where it stimulates the production of gastric juice.

* * *

gas·trin (gasґtrin) any of several polypeptide hormones released from peptidergic fibers in the vagus nerve and from G cells in the pyloric glands of the gastric antrum. Forms include little gastrins (G17, chain lengths of 17 amino acids), big gastrins (G34, chain lengths of 34), and minigastrins (G14, chain lengths of 14). Gastrin stimulates secretion of gastric acid, causing contraction of the lower esophageal sphincter and modifying gastric and esophageal motility; increases growth of acid-secreting mucosa cells; and weakly stimulates secretion of pancreatic enzymes and gallbladder contraction.

Medical dictionary. 2011.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Gastrin — Masse/Länge Primärstruktur 6/14/17/34/53/71 Aminosäuren …   Deutsch Wikipedia

  • Gastrin — Gastrin, zu den ⇒ gastrointestinalen Hormonen gehörendes Peptidhormon aus 34, 17 oder 13 Aminosäuren; wird in den G Zellen des Magenantrums gebildet. Zusammen mit Histamin stimuliert G. die Protonensekretion in den Belegzellen… …   Deutsch wörterbuch der biologie

  • Gastrin — Patronyme porté à la Réunion. Variante : Gastrein. Je n en connais pas la signification …   Noms de famille

  • gastrin — gàstrīn m <G gastrína> DEFINICIJA fiziol. probavni hormon koji luči sluznica želuca i dvanaesnika ETIMOLOGIJA gastr (o) …   Hrvatski jezični portal

  • gastrin — [gas′trin] n. [ GASTR(O) + IN1] a polypeptide hormone secreted in the stomach, that stimulates production of gastric juice …   English World dictionary

  • Gastrin — In humans, gastrin is a hormone that stimulates secretion of gastric acid (HCl) by the parietal cells of the stomach, as well as aiding in gastric motility. It is released by G cells in the stomach and duodenum. Its existence was first suggested… …   Wikipedia

  • gastrin — /gas trin/, n. a hormone that stimulates the secretion of gastric juice. [1900 05; GASTR + IN2] * * * ▪ hormone       any of a group of digestive hormones secreted by the wall of the pyloric end of the stomach (the area where the stomach joins… …   Universalium

  • Gastrin — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Gastrin est le patronyme de plusieurs personnalités françaises originaires de l île de La Réunion : Olivier Gastrin, footballeur. Sophie Gastrin,… …   Wikipédia en Français

  • gastrin — A group of peptide hormones secreted by the mucosal gut lining of some mammals in response to mechanical stress or high pH. They stimulate secretion of protons and pancreatic enzymes. Several different gastrins have been identified; human gastrin …   Dictionary of molecular biology

  • Gastrin — ◆ Gas|trin 〈n. 11; Biochem.〉 ein Peptidhormon, das am Magenausgang gebildet wird [zu grch. gaster „Unterleib, Magen“] ◆ Die Buchstabenfolge gas|tr... kann in Fremdwörtern auch gast|r... getrennt werden. * * * Gas|t|rin [griech. gaste̅̓r, Gen.:… …   Universal-Lexikon

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”