based on the specificity of action of prazosin on postsynaptic alpha 1-adrenergic receptors and of dexamethasone on the anterior lobe of the pituitary gland , the present data indicate that phenylephrine is a potent stimulator of acth secretion by a direct action on an alpha 1-adrenergic receptor in corticotrophs of the adenohypophysis .
C1707524
corticotrophs
C0032008
adenohypophysis