both epinephrine and norepinephrine dose-dependently ( 10 ng/ml to 1 microgram/ml ) stimulated the contractility of the myometrial strips and significantly increased the synthesis of all prostaglandins assayed . alpha-adrenergic blockers inhibited the catecholamine-induced increase in contractility .
C0014563
epinephrine
C0028351
norepinephrine