Zur Wirkung von Oxytocin auf einen autorhythmischen glatten Gefässmuskel

The influence of oxytocine on the spontaneously contractile portal vein of the rat has been investigated. This octapeptide decreases the active tension and abolished it completely at a concentration of 5×10−7g/ml. The effect is not caused by an adrenergic mechanism but by a direct action on the smooth muscle cell.