RT Journal Article SR Electronic T1 International Union of Basic and Clinical Pharmacology. CV. Somatostatin Receptors: Structure, Function, Ligands, and New Nomenclature JF Pharmacological Reviews JO Pharmacol Rev FD American Society for Pharmacology and Experimental Therapeutics SP 763 OP 835 DO 10.1124/pr.117.015388 VO 70 IS 4 A1 Thomas Günther A1 Giovanni Tulipano A1 Pascal Dournaud A1 Corinne Bousquet A1 Zsolt Csaba A1 Hans-Jürgen Kreienkamp A1 Amelie Lupp A1 Márta Korbonits A1 Justo P. Castaño A1 Hans-Jürgen Wester A1 Michael Culler A1 Shlomo Melmed A1 Stefan Schulz A2 Eliot H. Ohlstein YR 2018 UL http://pharmrev.aspetjournals.org/content/70/4/763.abstract AB Somatostatin, also known as somatotropin-release inhibitory factor, is a cyclopeptide that exerts potent inhibitory actions on hormone secretion and neuronal excitability. Its physiologic functions are mediated by five G protein–coupled receptors (GPCRs) called somatostatin receptor (SST)1–5. These five receptors share common structural features and signaling mechanisms but differ in their cellular and subcellular localization and mode of regulation. SST2 and SST5 receptors have evolved as primary targets for pharmacological treatment of pituitary adenomas and neuroendocrine tumors. In addition, SST2 is a prototypical GPCR for the development of peptide-based radiopharmaceuticals for diagnostic and therapeutic interventions. This review article summarizes findings published in the last 25 years on the physiology, pharmacology, and clinical applications related to SSTs. We also discuss potential future developments and propose a new nomenclature.