© 1967 by European Society of Cardiology
Copyright © 1967, European Society of Cardiology
Inhibition of Adenosine-induced Coronary Vasodilatation*
From Baker Medical Research Institute, Commercial Road, Prahran S.1, Victoria, Australia
Authors' Synopsis: Isolated spontaneously beating rat and guinea-pig hearts were used to investigate the direct dilator action of adenosine (5 µg./ml.) on the coronary vasculature. Phenoxybenzamine (10 µg./ml.) blocked the coronary dilator effect of adenosine and of another coronary dilator drug, dipyridamole, but failed to block adenosine-induced bradycardia. These results are interpreted to mean that adrenergic receptors may be involved in the coronary-dilator effect of adenosine.
* This work was done during the tenure of a grant-in-aid from the National Heart Foundation of Australia.