Neuropeptides

Neuropeptides are a class of signaling molecules produced in the nervous system and other tissues throughout the body. They are typically larger and more complex than neurotransmitters and are made up of chains of amino acids. Neuropeptides can act as neurotransmitters, neuromodulators, or hormones and can have a wide range of effects on cells and tissues of the body (Holzer et al., 2012).