Neuropeptides Strongly Influence Rabbit Vaginal Muscle Contraction and Blood Flow In Vitro

The intricate interplay of smooth muscle contraction and relaxation, alongside blood flow regulation, is absolutely fundamental for healthy vaginal function and the physiological responses associated with sexual arousal. Neuropeptides, which are small protein-like molecules used by neurons to communicate, are known to act as crucial signaling molecules, modulating smooth muscle activity across various organ systems. However, despite their widespread importance, the precise and detailed pharmacological effects of various neuropeptides on both the vaginal wall smooth muscle and the associated vaginal artery smooth muscle in a controlled in vitro setting remained largely unexplored.