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大鼠离体胃黏膜对五肽胃泌素和乙酰甲胆碱反应时组胺分泌增加。

Increased histamine-output from the isolated gastric mucosa of the rat in response to pentagastrin and methacholine.

作者信息

Main I H, Pearce J B

出版信息

Br J Pharmacol. 1982 May;76(1):51-9. doi: 10.1111/j.1476-5381.1982.tb09190.x.

Abstract

1 A rat isolated gastric mucosal preparation was used to monitor histamine output and acid secretion during stimulation by different secretagogues. 2 In non-stimulated preparations, spontaneous histamine output decreased over 450 min. 3 Stimulation of secretion with 4 (5)-methylhistamine or dibutyryl cyclic adenosine 3'5'-monophosphate (db cyclic AMP) and theophylline did not influence histamine output. 4 Pentagastrin, gastrin and methacholine increased both acid secretion and histamine output. Pentagastrin and gastrin mobilized six times more histamine and relation to acid secretion than did methacholine. 5 Spontaneous histamine output and secretagogue-induced increases were unaffected by changes in external Ca2+ (0.0 to 7.2 mM) or Mg2+ (1.2 to 4.8 mM). 6 These results support the hypothesis that mucosal histamine plays a more important role in the action of gastrin than of cholinomimetics on the parietal cell.

摘要
  1. 使用大鼠离体胃黏膜制备物监测不同促分泌剂刺激期间的组胺释放和胃酸分泌。2. 在未受刺激的制备物中,自发组胺释放在450分钟内减少。3. 用4(5)-甲基组胺或二丁酰环腺苷3',5'-单磷酸(db环磷酸腺苷)和茶碱刺激分泌不影响组胺释放。4. 五肽胃泌素、胃泌素和乙酰甲胆碱增加胃酸分泌和组胺释放。与乙酰甲胆碱相比,五肽胃泌素和胃泌素释放的组胺量是其六倍,且与胃酸分泌相关。5. 自发组胺释放和促分泌剂诱导的增加不受细胞外Ca2 +(0.0至7.2 mM)或Mg2 +(1.2至4.8 mM)变化的影响。6. 这些结果支持以下假设:黏膜组胺在胃泌素对壁细胞的作用中比拟胆碱药发挥更重要的作用。

相似文献

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The role of gastric secretagogues in regulating gastric histamine release in vivo.
Gastroenterology. 1992 Feb;102(2):403-8. doi: 10.1016/0016-5085(92)90083-b.

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