Peripheral benzodiazepines potentiate the effect of adenosine in rat vas deferens

Abstract
Ro 5–4864, diazepam, clonazepam and PK 11195 inhibit the responses of rat vas deferens following electrical stimulation in the rank order Ro 5–4864 > PK 11195 = diazepam > clonazepam. The adenosine-inhibited electrically-induced response was potentiated by Ro 5–4864 or diazepam, but not by clonazepam or PK 11195. This potentiation is due to an inhibition of the adenosine uptake system.