Inhibitory effects of beta-adrenergic agonists on gastric acid secretion in dogs.
Inhibitory effects of beta-adrenergic agonists on gastric acid secretion in dogs.
复制标题
β-肾上腺素能激动剂对狗胃酸分泌的抑制作用。
DOI：
10.1152/ajpgi.1986.251.4.g453
复制
发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Feldman,M
中科院分区：
文献类型：
--
作者：
Stevens,MH;Thirlby,RC;Richardson,CT;Fredrickson,MA;Unger,RH;Feldman,M
We evaluated the effect of two beta-adrenergic agonists, isoproterenol (nonselective agonist) and terbutaline (selective beta 2-agonist), on gastric acid secretion stimulated by intravenous pentagastrin, bethanechol, or histamine in dogs with gastric fistulas. Intravenous infusion of isoproterenol or terbutaline inhibited pentagastrin-stimulated acid secretion to a significantly greater extent than they inhibited bethanechol- or histamine-stimulated acid secretion. For example, isoproterenol (12 micrograms X kg-1 X h-1) reduced mean pentagastrin-, bethanechol-, and histamine-stimulated acid output by 86, 63, and 14%, respectively. Percent inhibition of acid secretion with terbutaline (30 micrograms X kg-1 X h-1) averaged 60, 17, and 24% for pentagastrin, bethanechol, and histamine, respectively. Terbutaline also inhibited pentagastrin-stimulated acid secretion from vagally denervated fundic pouches in a dose-related manner. Plasma somatostatin-like immunoreactivity was significantly higher during infusion of terbutaline plus pentagastrin than during infusion of pentagastrin alone. However, an intravenous infusion of 0.3 microgram X kg-1 X h-1 somatostatin-14 had no effect on pentagastrin-stimulated acid secretion from the gastric fistula, even though this infusion increased plasma somatostatin-like immunoreactivity to the same extent as terbutaline plus pentagastrin infusion. Thus the amount of somatostatin released during terbutaline infusion was not sufficient to explain the inhibition of pentagastrin-stimulated acid secretion observed.
