Effect of resection of antrum and duodenal bulb on sham-feeding-induced inhibition of canine gastric secretion

In dogs with Heidenhain pouches and oesophageal and gastric fistulae, sham feeding inhibited pentagastrin-stimulated Heidenhain pouch acid output. Resection of the antrum and the duodenalbulb reduced oin stomach was diverted through the gastric cannula. The present results are conid secretion at least partly by inducing a vagal release of an inhibitory hormone. The results suggest that this hormone is released from the antrum and the duodenal bulb.

[Non-resecting surgery for gastroduodenal ulcer. I. Pathophysiological principles (author's transl)]

Selective proximal vagotomy with pyloroplasty is a method which permits ulcers to be operated on with less morphological and pathophysiological disturbances than is possible with any other method. After ingestion, a reactive yet reduced acid secretion is still possible through the gastrin stimulus. The retained vagal antral release of gastrin seems to be without importance to the denervated delomorphous cells. Side effects of this type of vagotomy are small. The disturbances of motility and evacuation which also occur here can easily be corrected by an additional pyloroplasty suitable in shape and function.

Effect of two methylated prostaglandin E2 analogs on gastroduodenal pressure in man

The effect of two methylated analogs of prostaglandin E2 (PGE2), namely 16, 16-dimethyl PGE2 and 15 (S)-15-methyl PGE2 methyl ester, on gastroduodenal motility has been studied in healthy male volunteers. Oral administration of 140 mug of the 16-alkylated analog produced a significant decrease in motor activity in both the gastric antrum and the duodenum. 80 mug had no detectable effect on pressure. However, 80 mug of the 15-methylated analog administered directly into the duodenum caused an almost immidiated inhibition of the duodenal motor activity. In view of previous findings on the inhibitory action of these two analogs on gastric acid secretion, it seems as if the gastrointestinal smooth muscles are less sensitive to the action of the analogs than are the oxyntic glands.

Gastric secretory inhibition by two 16-methylated analogs of prostaglandin E2 given intragastrically to patients with duodenal ulcer disease

The effects of two methylated analogs of prostaglandin E2 (PGE2), namely 16,16-dimethyl PGE2 and its methyl ester, on gastric acid and pepsin secretion have been studied in 5 ulcer patients. Both analogs produced significant inhibition of acid secretion in a dose-dependent fashion, but the effect was less pronounced than the inhibition found in a group of healthy volunteers, and it was necessary to give 140 mug of each analog to reach about the ED50. The mean values of pepsin output and pepsin concentration were decreased following administration of PGE2, but the individual results varied.