Home Forum Dictionary Articles Tutorials Books Directory Share your work


Edit page | Page history | Printable version

Dictionary » G » Gastrin

Gastrin

Polypeptide hormone secreted by the mucous lining of the stomach; induces the secretion of gastric juice.A hormone produced by gastrin cells that promote gastric juice secretion.gastrin

(Science: hormone, protein) a group of peptide hormones secreted by the mucosal gut lining of some mammals in response to mechanical stress or high ph. When there is food in the stomach, these cells secrete gastrin.

gastrin then stimulates the stomach parietal cells to produce hydrochloric acid. Normally, as stomach ph lowers, gastrin secretion decreases. Gastrin blood levels can be determined to be elevated in conditions such as Zollinger-Ellison syndrome and pernicious anaemia.

Several different gastrins have been identified, human gastrin i has 16 amino acids (2116 D). Gastrin is competitively inhibited by cholecystokinin.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Vagus Nerve

An important point - Gastic acid is still produced without activation of the vagal nerve... For those who are interested... The hormone gastrin binds to (CCK-2) receptors on the stomach and activates a proton pump (via increases cAMP levels) to increase acid in the stomach... Gastrin also ...

See entire post
by Revenged
Sat Sep 15, 2007 10:45 am
 
Forum: Human Biology
Topic: Vagus Nerve
Replies: 16
Views: 43160

hormones in digestion

The presence of chyme (in acidic condition because of the presence of HCl) in the stomach stimulate the release of secretin, gastrin and cck that control digestive secretion. Liver does produce bile which is the byproduct of hemoglobin breakdown that occur in it. It also produces blood ...

See entire post
by sham
Mon Mar 13, 2006 2:36 am
 
Forum: Human Biology
Topic: hormones in digestion
Replies: 6
Views: 1119

hormones in digestion

secretin gastrin and cck in humans are all hormones that control digestive secretions, i know that statement is correct but the follow make me confuse : they are produced in the gut by an acid ph? i believe they are produced in ...

See entire post
by coco
Thu Mar 09, 2006 11:18 pm
 
Forum: Human Biology
Topic: hormones in digestion
Replies: 6
Views: 1119

gastric secretion

what about the action of hormones gastrin and epigastrin??

See entire post
by kiran
Sat Oct 08, 2005 11:00 am
 
Forum: General Discussion
Topic: gastric juice secretion
Replies: 9
Views: 1701

Can you live off milk?

... (T3, T4, rT3, Calcitonin, Parathormone, PTH peptide) · gastrointestinal peptides (Vasoactive intestinal peptide, Bombesin, Cholecystokinin, Gastrin, Gastrin inhibitory peptide, Pancreatic peptide, Y peptide, Substance P and Neurotensin) · Growth Factors (IGF's (I and II), IGF binding proteins, ...

See entire post
by b_d_41501
Wed Jun 01, 2005 3:20 am
 
Forum: Human Biology
Topic: Can you live off milk?
Replies: 7
Views: 4096


This page was last modified 21:16, 3 October 2005. This page has been accessed 2,453 times. 
What links here | Related changes | Permanent link