“Excessive amounts of PGE1 only partially inhibited the lipolytic effect of even submaximal concentrations of epinephrine, glucagon, and ACTH in adipocytes, although total inhibitions were obtainable with appropriate concentrations of the β-adrenergic blocking compounds.”
“While PGE1 , Ko 592, and propranolol all inhibited the stimulatory effects of glucagon and ACTH on lipolysis in adipocytes, neither agent influenced the action of either hormone on glucose oxidation; the latter finding suggests that β-receptors do not mediate the stimulatory effects of these hormones on glucose oxidation.”