Basal and pentagastrin stimulated 6-keto prostaglandin F1 alpha secretion in dog stomach.

The effect of pentagastrin on gastric secretion of prostacyclin (PGI2) was studied by measuring the output of 6-keto-prostaglandin F1 alpha in the gastric juice of 8 dogs before and after an intramuscular injection of pentagastrin. A similar study was done in 7 control dogs not given pentagastrin. Pentagastrin was found to significantly increase the gastric secretory output of acid and 6-keto PGF1 alpha during the first 30 minutes after the pentagastrin injection. This was highly significant when compared to the control group. It is concluded that pentagastrin stimulates gastric prostacyclin secretion.