PMID- 21839129 OWN - NLM STAT- MEDLINE DCOM- 20120112 LR - 20161125 IS - 1873-5169 (Electronic) IS - 0196-9781 (Linking) VI - 32 IP - 9 DP - 2011 Sep TI - Central administration of neuronostatin induces antinociception in mice. PG - 1893-901 LID - 10.1016/j.peptides.2011.07.010 [doi] AB - Neuronostatin, a recently discovered endogenous bioactive peptide, was encoded by pro-mRNA of somatostatin that contributes to modulation of nociception. However, nociceptive effect of neuronostatin is still not fully known. The aim of this study was to evaluate effect of neuronostatin on nociception and elucidate its possible mechanism of action. Intracerebroventricular (i.c.v.) administration of neuronostatin (0.3, 3, 6, 12nmol/mouse) produced a dose- and time-related antinociceptive effect in the tail immersion assay in mice, an acute pain model. The antinociceptive effect of neuronostatin was significantly antagonized by naloxone, and was strongly inhibited by co-injection with beta-funaltrexamine or nor-binaltorphimine, but not by naltrindole. Also, melanocortin 3/4 receptor antagonist, SHU9119, completely blocked the effect of neuronostatin. These data indicated the involvement of both mu- and kappa-opioid receptors and central melanocortin system in the analgesic response induced by neuronostatin. In addition, neuronostatin (6nmol, i.c.v.) increased c-Fos protein expression in the periaqueductal gray (PAG) and the nucleus raphe magnus (NRM) that have a pivotal role in regulating descending pain pathways. Taken together, this study is the first to reveal that neuronostatin produces antinociceptive effect via opioid and central melanocortin systems, which is associated with an increase in neuronal activity the PAG and NRM. CI - Copyright (c) 2011 Elsevier Inc. All rights reserved. FAU - Yang, Ai-min AU - Yang AM AD - Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, PR China. FAU - Ge, Wan-wen AU - Ge WW FAU - Lu, Song-song AU - Lu SS FAU - Yang, Shao-bin AU - Yang SB FAU - Su, Shu-fang AU - Su SF FAU - Mi, Ze-yun AU - Mi ZY FAU - Chen, Qiang AU - Chen Q LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110802 PL - United States TA - Peptides JT - Peptides JID - 8008690 RN - 0 (Analgesics) RN - 0 (Mc3r protein, mouse) RN - 0 (Narcotic Antagonists) RN - 0 (Peptide Hormones) RN - 0 (Proto-Oncogene Proteins c-fos) RN - 0 (Receptor, Melanocortin, Type 3) RN - 0 (Receptor, Melanocortin, Type 4) RN - 0 (neuronostatin, mouse) RN - 168482-23-3 (SHU 9119) RN - 36B82AMQ7N (Naloxone) RN - 36OOQ86QM1 (norbinaltorphimine) RN - 5S6W795CQM (Naltrexone) RN - 72782-05-9 (beta-funaltrexamine) RN - 9002-79-3 (Melanocyte-Stimulating Hormones) SB - IM MH - Acute Pain/drug therapy MH - Analgesics/administration & dosage/pharmacology MH - Animals MH - Dose-Response Relationship, Drug MH - Immunohistochemistry MH - Infusions, Intraventricular MH - Male MH - Melanocyte-Stimulating Hormones/pharmacology MH - Mice MH - Models, Animal MH - Naloxone/pharmacology MH - Naltrexone/analogs & derivatives/pharmacology MH - Narcotic Antagonists MH - Nociception/*drug effects MH - Peptide Hormones/*administration & dosage/antagonists & inhibitors/chemical synthesis/*pharmacology MH - Periaqueductal Gray/drug effects MH - Proto-Oncogene Proteins c-fos/metabolism MH - Receptor, Melanocortin, Type 3/antagonists & inhibitors MH - Receptor, Melanocortin, Type 4/antagonists & inhibitors EDAT- 2011/08/16 06:00 MHDA- 2012/01/13 06:00 CRDT- 2011/08/16 06:00 PHST- 2011/06/03 00:00 [received] PHST- 2011/07/11 00:00 [revised] PHST- 2011/07/11 00:00 [accepted] PHST- 2011/08/16 06:00 [entrez] PHST- 2011/08/16 06:00 [pubmed] PHST- 2012/01/13 06:00 [medline] AID - S0196-9781(11)00285-3 [pii] AID - 10.1016/j.peptides.2011.07.010 [doi] PST - ppublish SO - Peptides. 2011 Sep;32(9):1893-901. doi: 10.1016/j.peptides.2011.07.010. Epub 2011 Aug 2.