아드레나린성 약물이 유문부결찰 백서의 위분비 기능에 미치는 영향

Gastric secretion is modulated largely by three major factors-the autonomic nervous system, the gastrointestinal hormones and the circulation. For autonomic nervous system, the parasympathetic influence on gastric secretion has been widely studied. However, the influence of sympatho-adrenal system has received much less attention and its role on gastric secretion remains a matter of controversy. Present investigation was undertaken to evaluate the adrenergic influence on gastric secretion using the experimental model of pylorus-ligated rat. Immediately after pylorus ligation intrinsic or synthetic adrenergic agents (methoxamine, norepinephrine, epinephrine, isoproterenol or dopamine) were injected subcutaneously. After 3-or 6-hour period of pyloric ligation the stomach was removed and gastric juice was collected for the evaluation of gastric secretory function. And blood glucose level was also measured. The results obtained are as folllows. 1) Gastric secretory function was active in the group of 3 hours pyloric-ligation and depressed greatly therafter. 2) All adrenergic drugs used in this experirnent suppressed the volume of gastric juice and acid output. The degree of suppression was marked in epinephrine or isoproterenol, moderate in methoxamine or norepinephrine and minimal in dopamine treated rats. 3) Blood glucose level was not directly correlated with the suppressive action of adrenergic drugs on gastric secretion. From the above results it is concluded that gastric secretory function is suppressed by adrenergic influence. And it is suggested that adrenergic beta-receptor acitivation plays a major role in the suppression of gastric secretion.