Neurokinin refers to a group of neuropeptides that play a crucial role in the nervous system. These peptides are involved in various physiological processes, including pain perception, inflammation, and the regulation of mood. They interact with specific receptors, known as neurokinin receptors, to exert their effects on the body. One of the most studied neurokinins is substance P, which is primarily associated with the transmission of pain signals. Neurokinins are also implicated in other functions, such as controlling stress responses and influencing gastrointestinal activity. Their diverse roles make them important targets for research in treating conditions like chronic pain and anxiety disorders.