Abstract
The protective and ulcer-healing properties of sucralfate on gastroduodenal mucosa are well established. In this study, the possible mode of action of sucralfate in humans has been explored by examining its effect on gastric bicarbonate secretion and luminal prostaglandin E 2 (PGE 2) output from the intact stomach. The gastric output of bicarbonate and PGE 2 has been calculated using a perfusion technique before, during, and after perfusion with sucralfate (8 mg/ml) in eight healthy volunteers. A significant increase in bicarbonate output occurred during the period of sucralfate perfusion returning to basal values during the post-sucralfate period. Pretreatment with indomethacin (25 mg/hour) failed to influence this secretory response. Luminal PGE 2 output was significantly increased in the post-sucralfate perfusion period only. These changes were caused mainly by an increase in gastric secretory volume with insignificant increases in concentrations of bicarbonate and PGE 2. These results suggest that stimulation of gastric bicarbonate secretion and PGE 2 output by sucralfate may play a role in its protective actions.
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