the ineffectiveness of these two compounds to inhibit the hyperglycemia induced by alpha adrenergic agonists indicates that the postsynaptic alpha adrenergic receptors which suppress the secretion of immunoreactive insulin from b cells of pancreatic islets are not blocked and that the alpha adrenergic receptors which control immunoreactive insulin secretion differ from the classical postsynaptic alpha adrenergic receptors and more closely resemble presynaptic alpha-2 adrenergic receptors .
C0034784
alpha adrenergic
C0001639
alpha-2 adrenergic receptors