PT-141

PT-141 (Bremelanotide) is a synthetic melanocortin receptor agonist derived from melanocyte-stimulating hormone (MSH) analogues. It primarily targets melanocortin receptors (particularly MC4R) within the central nervous system.

In research settings, PT-141 has been studied for its effects on neuroendocrine signaling pathways related to sexual function, arousal mechanisms, and behavioral modulation. Unlike phosphodiesterase inhibitors, its mechanism is centrally mediated rather than vascular.