PMID- 30863364 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200225 IS - 1664-2392 (Print) IS - 1664-2392 (Electronic) IS - 1664-2392 (Linking) VI - 10 DP - 2019 TI - Gut Hormones and Their Effect on Bone Metabolism. Potential Drug Therapies in Future Osteoporosis Treatment. PG - 75 LID - 10.3389/fendo.2019.00075 [doi] LID - 75 AB - Bone homeostasis displays a circadian rhythm with increased resorption during the night time as compared to day time, a difference that seems-at least partly-to be caused by food intake during the day. Thus, ingestion of a meal results in a decrease in bone resorption, but people suffering from short bowel syndrome lack this response. Gut hormones, released in response to a meal, contribute to this link between the gut and bone metabolism. The responsible hormones appear to include glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1), known as incretin hormones due to their role in regulating glucose homeostasis by enhancing insulin release in response to food intake. They interact with their cognate receptors (GIPR and GLP-1R), which are both members of the class B G protein-coupled receptors (GPCRs), and already recognized as targets for treatment of metabolic diseases, such as type 2 diabetes mellitus (T2DM) and obesity. Glucagon-like peptide-2 (GLP-2), secreted concomitantly with GLP-1, acting via another class B receptor (GLP-2R), is also part of this gut-bone axis. Several studies, including human studies, have indicated that these three hormones inhibit bone resorption and, moreover, that GIP increases bone formation. Another hormone, peptide YY (PYY), is also secreted from the enteroendocrine L-cells (together with GLP-1 and GLP-2), and acts mainly via interaction with the class A GPCR NPY-R2. PYY is best known for its effect on appetite regulation, but recent studies have also shown an effect of PYY on bone metabolism. The aim of this review is to summarize the current knowledge of the actions of GIP, GLP-1, GLP-2, and PYY on bone metabolism, and to discuss future therapies targeting these receptors for the treatment of osteoporosis. FAU - Schiellerup, Sine Paasch AU - Schiellerup SP AD - Laboratory of Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. FAU - Skov-Jeppesen, Kirsa AU - Skov-Jeppesen K AD - Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. AD - Faculty of Health and Medical Sciences, Novo Nordisk Foundation (NNF) Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark. FAU - Windelov, Johanne Agerlin AU - Windelov JA AD - Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. AD - Faculty of Health and Medical Sciences, Novo Nordisk Foundation (NNF) Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark. FAU - Svane, Maria Saur AU - Svane MS AD - Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. FAU - Holst, Jens Juul AU - Holst JJ AD - Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. AD - Faculty of Health and Medical Sciences, Novo Nordisk Foundation (NNF) Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark. FAU - Hartmann, Bolette AU - Hartmann B AD - Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. AD - Faculty of Health and Medical Sciences, Novo Nordisk Foundation (NNF) Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark. FAU - Rosenkilde, Mette Marie AU - Rosenkilde MM AD - Laboratory of Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. LA - eng PT - Journal Article PT - Review DEP - 20190226 PL - Switzerland TA - Front Endocrinol (Lausanne) JT - Frontiers in endocrinology JID - 101555782 PMC - PMC6399108 OTO - NOTNLM OT - GIP OT - GLP-1 OT - GLP-2 OT - PYY OT - bone metabolism OT - gut hormones OT - osteoporosis EDAT- 2019/03/14 06:00 MHDA- 2019/03/14 06:01 PMCR- 2019/01/01 CRDT- 2019/03/14 06:00 PHST- 2018/09/20 00:00 [received] PHST- 2019/01/28 00:00 [accepted] PHST- 2019/03/14 06:00 [entrez] PHST- 2019/03/14 06:00 [pubmed] PHST- 2019/03/14 06:01 [medline] PHST- 2019/01/01 00:00 [pmc-release] AID - 10.3389/fendo.2019.00075 [doi] PST - epublish SO - Front Endocrinol (Lausanne). 2019 Feb 26;10:75. doi: 10.3389/fendo.2019.00075. eCollection 2019.