Summary
Interaction between prostaglandins and Syntocinon is shown to be of two kinds. There may be potentiation, where an increased response to Syntocinon follows combination with a low dose of prostaglandin, and enhancement, which is of much longer duration. Potentiation can be produced by both E and F prostaglandins, whereas enhancement is confined to E prostaglandins. Varying the doses of prostaglandin E is shown to have little effect on the degree of enhancement produced. The physiological implications and clinical applications of these interactions are discussed.