Inhibition of non-adrenergic transmission in the rat vas deferens by prazosin.

Isolated preparations of rat vas deferens were induced to contract by neurogenic and non-neurogenic stimuli, and the effect of prazosin on these contractions was investigated. Prazosin (24 microM) exerted a profound inhibitory effect on neurogenic contractions and had no significant effect on non-neurogenic contractions. These experiments indicate that prazosin is capable of interacting with the neurotransmission processes in the vas deferens to produce inhibition of transmission.