title: The role of the neuropeptide Y (NPY) family in the pathophysiology of inflammatory bowel disease (IBD).
abstract: Inflammatory bowel disease (IBD) includes three main disorders: ulcerative colitis, Crohn's disease, and microscopic colitis. The etiology of IBD is unknown and the current treatments are not completely satisfactory. Interactions between the gut neurohormones and the immune system are thought to play a pivot role in inflammation, especially in IBD. These neurohormones are believed to include members of the neuropeptide YY (NPY) family, which comprises NPY, peptide YY (PYY), and pancreatic polypeptide (PP). Understanding the role of these peptides may shed light on the pathophysiology of IBD and potentially yield an effective treatment tool. Intestinal NPY, PYY, and PP are abnormal in both patients with IBD and animal models of human IBD. The abnormality in NPY appears to be primarily caused by an interaction between immune cells and the NPY neurons in the enteric nervous system; the abnormalities in PYY and PP appear to be secondary to the changes caused by the abnormalities in other gut neurohormonal peptides/amines that occur during inflammation. NPY is the member of the NPY family that can be targeted in order to decrease the inflammation present in IBD.
authors.affiliation: Section for Gastroenterology, Department of Medicine, Stord Hospital, Stord, Norway; Section for Neuroendocrine Gastroenterology, Division of Gastroenterology, Department of Clinical Medicine, University of Bergen, Bergen, Norway; National Centre for Functional Gastrointestinal Disorders, Department of Medicine, Haukeland University Hospital, Bergen, Norway. Electronic address: magdy.el-salhy@helse-fonna.no.
authors.forename: Magdy
authors.initials: M
authors.lastname: El-Salhy
authors.affiliation: Section for Neuroendocrine Gastroenterology, Division of Gastroenterology, Department of Clinical Medicine, University of Bergen, Bergen, Norway; National Centre for Functional Gastrointestinal Disorders, Department of Medicine, Haukeland University Hospital, Bergen, Norway. Electronic address: Trygve.hausken@helse-bergen.no.
authors.forename: Trygve
authors.initials: T
authors.lastname: Hausken
mesh_terms: D000818:Animals; D005768:Gastrointestinal Hormones / Q000378:metabolism; D006801:Humans; D007107:Immune System / Q000378:metabolism*; D015212:Inflammatory Bowel Diseases / Q000378:metabolism* / Q000503:physiopathology*; D009474:Neurons / Q000378:metabolism*; D009478:Neuropeptide Y / Q000378:metabolism*; D010191:Pancreatic Polypeptide / Q000378:metabolism*
chemical_list: D005768:Gastrointestinal Hormones; D009478:Neuropeptide Y; D010191:Pancreatic Polypeptide
keywords: Crohn's disease; Inflammatory bowel disease; Motility; Secretion; Ulcerative colitis