Relationship between serotonin and tryptamine receptors in the rat stomach fundus.

Abstract

Tryptamine and serotonin (5-HT) are relatively potent contractile agonists in the rat fundus, a tissue in which contraction to 5-HT is not mediated by interaction with 5-HT1 or 5-HT2 receptors. The identification of [3H] tryptamine binding sites in the brain and fundus that …