The Comparative Physiology of Regulatory Peptides

Strictly speaking, the term regulatory peptides may include any peptide which has a regulatory function in any organism. In recent years, how­ ever, the term has come to mean those originally classified as brain-gut peptides. The peptides initially defined as those belonging to the brain­ gut axis had a dual location in neurones of the brain and endocrine cells of the gut. We now include a number of neuropeptides found in the autonomic nervous system of the gut, the cardiovascular system an...