Genistein potentiates the relaxation induced by β1- and β2-Adrenoceptor activation in rat aortic rings

Summary:In rat aortic rings, genistein, an inhibitor of tyrosine kinase, but not daidzein, an inactive analogue of genistein, potentiated the relaxation induced by isoproterenol. Atenolol, a β1-adrenoceptor antagonist, or ICI-118,551, a β2-adrenoceptor antagonist, inhibited the relaxation induced by