Stimulated gastric prostaglandin output, and the effect of inhibition of prostaglandin synthetase, in the conscious cat.

1. In the conscious gastric fistula cat there was no correlation between the outputs of gastric acid and PGE secreted in response to incremental doses of pentagastrin and histamine acid phosphate. 2. PGE secreted in response to pentagastrin and histamine was not dose dependent. 3. Flurbiprofen significantly inhibited the gastric output of PGE but did not influence acid or pepsin secretion. Inhibition of PGE secretion was accompanied by evidence of gastric mucosal haemorrhage. 4. It is concluded that gastric juice PGE is unlikely to be involved in the physiological control of acid secretion.