PMID- 26820818 OWN - NLM STAT- MEDLINE DCOM- 20170406 LR - 20170406 IS - 1472-8206 (Electronic) IS - 0767-3981 (Linking) VI - 30 IP - 3 DP - 2016 Jun TI - Analgesic effects evoked by a CCR2 antagonist or an anti-CCL2 antibody in inflamed mice. PG - 235-47 LID - 10.1111/fcp.12182 [doi] AB - Chemokine CCL2, also known as monocyte chemoattractant protein-1 (MCP-1), is a molecule that in addition to its well-established role in chemotaxis can also act as nociceptor sensitizer. The upregulation of this chemokine in inflamed tissues could suggest its involvement in inflammatory hypernociception. Thus, we have measured CCL2 levels in mice with acute or chronic inflammation due to the intraplantar (i.pl.) injection of carrageenan or complete Freund's adjuvant (CFA), respectively, and we have studied whether inflammatory hyperalgesia or allodynia could be attenuated by blocking CCR2 receptors or neutralizing CCL2 with an anti-CCL2 antibody. A remarkable increase in CCL2 concentration was detected by ELISA in paw homogenates coming from carrageenan- or CFA-inflamed mice, being its expression mainly localized in macrophages, as shown by immunohistochemical assays. The s.c. (0.3-3 mg/kg) or i.pl. (0.3-3 mug) administration of the CCR2 antagonist, RS 504393, dose dependently inhibited thermal hyperalgesia measured in acutely or chronically inflamed mice, whereas s.c. administration of this drug did not reduce inflammatory mechanical allodynia. Furthermore, the inhibition of inflammatory hyperalgesia after the administration of an anti-CCL2 antibody (0.1-1 mug; i.pl.) suggests that CCL2 could be the endogenous chemokine responsible for CCR2-mediated hyperalgesic effects. Besides, the acute administration of the highest antihyperalgesic dose of RS 504393 assayed did not reduce paw tumefaction or modify the presence of inflammatory cells. These results indicate that the blockade of the CCL2/CCR2 system can counteract inflammatory hyperalgesia, being this antinociceptive effect unrelated to a decrease in the inflammatory reaction. CI - (c) 2016 Societe Francaise de Pharmacologie et de Therapeutique. FAU - Llorian-Salvador, Maria AU - Llorian-Salvador M AD - Facultad de Medicina, Laboratorio de Farmacologia, Instituto Universitario de Oncologia del Principado de Asturias (IUOPA), Universidad de Oviedo, C/Julian Claveria 6, 33006, Oviedo, Spain. FAU - Pevida, Marta AU - Pevida M AD - Facultad de Medicina, Laboratorio de Farmacologia, Instituto Universitario de Oncologia del Principado de Asturias (IUOPA), Universidad de Oviedo, C/Julian Claveria 6, 33006, Oviedo, Spain. FAU - Gonzalez-Rodriguez, Sara AU - Gonzalez-Rodriguez S AD - Facultad de Medicina, Laboratorio de Farmacologia, Instituto Universitario de Oncologia del Principado de Asturias (IUOPA), Universidad de Oviedo, C/Julian Claveria 6, 33006, Oviedo, Spain. FAU - Lastra, Ana AU - Lastra A AD - Facultad de Medicina, Laboratorio de Farmacologia, Instituto Universitario de Oncologia del Principado de Asturias (IUOPA), Universidad de Oviedo, C/Julian Claveria 6, 33006, Oviedo, Spain. FAU - Fernandez-Garcia, Maria-Teresa AU - Fernandez-Garcia MT AD - Unidad de Histopatologia Molecular en Modelos Animales de Cancer, IUOPA, Universidad de Oviedo, C/Julian Claveria 6, 33006, Oviedo, Spain. FAU - Hidalgo, Agustin AU - Hidalgo A AD - Facultad de Medicina, Laboratorio de Farmacologia, Instituto Universitario de Oncologia del Principado de Asturias (IUOPA), Universidad de Oviedo, C/Julian Claveria 6, 33006, Oviedo, Spain. FAU - Baamonde, Ana AU - Baamonde A AD - Facultad de Medicina, Laboratorio de Farmacologia, Instituto Universitario de Oncologia del Principado de Asturias (IUOPA), Universidad de Oviedo, C/Julian Claveria 6, 33006, Oviedo, Spain. FAU - Menendez, Luis AU - Menendez L AD - Facultad de Medicina, Laboratorio de Farmacologia, Instituto Universitario de Oncologia del Principado de Asturias (IUOPA), Universidad de Oviedo, C/Julian Claveria 6, 33006, Oviedo, Spain. LA - eng PT - Journal Article DEP - 20160217 PL - England TA - Fundam Clin Pharmacol JT - Fundamental & clinical pharmacology JID - 8710411 RN - 0 (Analgesics) RN - 0 (Benzoxazines) RN - 0 (Ccl2 protein, mouse) RN - 0 (Ccr2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (RS 504393) RN - 0 (Receptors, CCR2) RN - 0 (Spiro Compounds) SB - IM MH - Analgesics/pharmacology/*therapeutic use MH - Animals MH - Benzoxazines/pharmacology/*therapeutic use MH - Chemokine CCL2/*antagonists & inhibitors/metabolism MH - Dose-Response Relationship, Drug MH - Hyperalgesia/*drug therapy/metabolism MH - Inflammation/drug therapy/metabolism MH - Male MH - Mice MH - Pain Threshold/drug effects/physiology MH - Receptors, CCR2/*antagonists & inhibitors/metabolism MH - Spiro Compounds/pharmacology/*therapeutic use MH - Treatment Outcome OTO - NOTNLM OT - CCL2 OT - CCR2 OT - carrageenan OT - chemokines OT - complete Freund's adjuvant OT - inflammation OT - mouse EDAT- 2016/01/29 06:00 MHDA- 2017/04/07 06:00 CRDT- 2016/01/29 06:00 PHST- 2015/07/24 00:00 [received] PHST- 2015/12/22 00:00 [revised] PHST- 2016/01/25 00:00 [accepted] PHST- 2016/01/29 06:00 [entrez] PHST- 2016/01/29 06:00 [pubmed] PHST- 2017/04/07 06:00 [medline] AID - 10.1111/fcp.12182 [doi] PST - ppublish SO - Fundam Clin Pharmacol. 2016 Jun;30(3):235-47. doi: 10.1111/fcp.12182. Epub 2016 Feb 17.