Sökning: onr:"swepub:oai:lup.lub.lu.se:c0fc5776-0f2c-4336-8ad7-0030eef8d96b" > Gastric acid secret...
Fältnamn | Indikatorer | Metadata |
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000 | 03167naa a2200277 4500 | |
001 | oai:lup.lub.lu.se:c0fc5776-0f2c-4336-8ad7-0030eef8d96b | |
003 | SwePub | |
008 | 160404s1996 | |||||||||||000 ||eng| | |
024 | 7 | a https://lup.lub.lu.se/record/301812 URI |
040 | a (SwePub)lu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a art2 swepub-publicationtype |
072 | 7 | a ref2 swepub-contenttype |
100 | 1 | a Andersson, K4 aut |
245 | 1 0 | a Gastric acid secretion after depletion of enterochromaffin-like cell histamine. A study with a-fluoromethylhistidine in rats |
264 | 1 | c 1996 |
520 | a BACKGROUND: Histamine is thought to play a central role in the regulation of gastric acid secretion. In the rat oxyntic mucosa most of the histamine is synthesized and stored in enterochromaffin-like (ECL) cells, and the rest resides in mast cells. The present study examines the role of ECL-cell histamine in the control of acid secretion in the intact, conscious rat. METHODS: Rats were treated with alpha-fluoromethylhistidine (alpha-FMH) to inhibit histamine synthesis. alpha-FMH was given by continuous subcutaneous infusion (3 mg/kg/h) for up to 9 days. An additional oral dose of alpha-FMH (50 mg/kg) was given 2 h before each acid secretion test. Acid secretion was studied in pylorus-ligated rats and in chronic gastric fistula rats stimulated with histamine, gastrin-17, or insulin after 2-6 days of alpha-FMH infusion. RESULTS: Treatment with alpha-FMH lowered oxyntic mucosal histamine synthesis by 80%. From previous observations this is thought to reflect depletion of histamine from the ECL cells. The remaining 20% resides in mucosal and submucosal mast cells, which seem to be resistant to alpha-FMH. Basal acid secretion was inhibited by more than 60% after alpha-FMH treatment and by more than 80% by ranitidine. Histamine-stimulated secretion was unaffected by alpha-FMH and abolished by the histamine H2-receptor antagonist ranitidine. The acid response to gastrin-17 was almost abolished in histamine-depleted rats and abolished by ranitidine. Vagally induced acid secretion (provoked by the injection of insulin or by pylorus ligation) was unaffected by alpha-FMH treatment but abolished by ranitidine and by the muscarinic M1-receptor antagonist pirenzepine. CONCLUSION: The results suggest that gastrin stimulates acid secretion by releasing histamine from ECL cells. Vagally induced acid secretion is also dependent on a histaminergic pathway but not on ECL-cell histamine. | |
650 | 7 | a MEDICIN OCH HÄLSOVETENSKAPx Medicinska och farmaceutiska grundvetenskaper0 (SwePub)3012 hsv//swe |
650 | 7 | a MEDICAL AND HEALTH SCIENCESx Basic Medicine0 (SwePub)3012 hsv//eng |
700 | 1 | a Cabero, J L4 aut |
700 | 1 | a Mattsson, H4 aut |
700 | 1 | a Håkanson, Rolfu Lund University,Lunds universitet,Drug Target Discovery,Forskargrupper vid Lunds universitet,Lund University Research Groups4 aut0 (Swepub:lu)farm-rha |
710 | 2 | a Drug Target Discoveryb Forskargrupper vid Lunds universitet4 org |
773 | 0 | t Scandinavian Journal of Gastroenterologyg 31:1, s. 24-30q 31:1<24-30x 1502-7708 |
856 | 4 8 | u https://lup.lub.lu.se/record/30181 |
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