Frontiers Comparative Effect of ACTH and Related Peptides on Proliferation and Growth of Rat Adrenal Gland Prolactin Releasing Hormone an overview ScienceDirect Topics The most common GH releasing peptides: , Ipamorelin A ghrelin receptor agonist that triggers short pulses of growth hormone release from the pituitary with minimal effects on cortisol, prolactin, or The role of cortisol and prolactin in the pathogenesis and clinical expression of psychotic disorders ScienceDirect Prolactin, a hormone that can affect reproductive capacity