PMID- 29570803 OWN - NLM STAT- MEDLINE DCOM- 20181022 LR - 20181022 IS - 2042-7158 (Electronic) IS - 0022-3573 (Linking) VI - 70 IP - 7 DP - 2018 Jul TI - Facial hyperalgesia due to direct action of endothelin-1 in the trigeminal ganglion of mice. PG - 893-900 LID - 10.1111/jphp.12905 [doi] AB - OBJECTIVE: This study assessed the ability of endothelin-1 (ET-1) to evoke heat hyperalgesia when injected directly into the trigeminal ganglia (TG) of mice and determined the receptors implicated in this effect. The effects of TG ET(A) and ET(B) receptor blockade on alleviation of heat hyperalgesia in a model of trigeminal neuropathic pain induced by infraorbital nerve constriction (CION) were also examined. METHODS: Naive mice received an intraganglionar (i.g.) injection of ET-1 (0.3-3 pmol) or the selective ET(B) R agonist sarafotoxin S6c (3-30 pmol), and response latencies to ipsilateral heat stimulation were assessed before the treatment and at 1-h intervals up to 5 h after the treatment. Heat hyperalgesia induced by i.g. ET-1 or CION was assessed after i.g. injections of ET(A) R and ET(B) R antagonists (BQ-123 and BQ-788, respectively, each at 0.5 nmol). KEY FINDINGS: Intraganglionar ET-1 or sarafotoxin S6c injection induced heat hyperalgesia lasting 4 and 2 h, respectively. Heat hyperalgesia induced by ET-1 was attenuated by i.g. BQ-123 or BQ-788. On day 5 after CION, i.g. BQ-788 injection produced a more robust antihyperalgesic effect compared with BQ-123. CONCLUSIONS: ET-1 injection into the TG promotes ET(A) R/ET(B) R-mediated facial heat hyperalgesia, and both receptors are clearly implicated in CION-induced hyperalgesia in the murine TG system. CI - (c) 2018 Royal Pharmaceutical Society. FAU - Gomes, Lenyta Oliveira AU - Gomes LO AD - Department of Pharmacology, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis , Santa Catarina, Brazil. FAU - Chichorro, Juliana Geremias AU - Chichorro JG AUID- ORCID: 0000-0001-5345-141X AD - Department of Pharmacology, Biological Sciences Sector, Federal University of Parana, Curitiba , Parana, Brazil. FAU - Araya, Erika Ivanna AU - Araya EI AD - Department of Pharmacology, Biological Sciences Sector, Federal University of Parana, Curitiba , Parana, Brazil. FAU - de Oliveira, Jade AU - de Oliveira J AD - Department of Biochemistry, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil. FAU - Rae, Giles Alexander AU - Rae GA AD - Department of Pharmacology, Center of Biological Sciences, Federal University of Santa Catarina, Florianopolis , Santa Catarina, Brazil. LA - eng PT - Journal Article DEP - 20180323 PL - England TA - J Pharm Pharmacol JT - The Journal of pharmacy and pharmacology JID - 0376363 RN - 0 (Endothelin A Receptor Antagonists) RN - 0 (Endothelin-1) RN - 0 (Oligopeptides) RN - 0 (Peptides, Cyclic) RN - 0 (Piperidines) RN - 0 (Receptor, Endothelin A) RN - 0 (Receptor, Endothelin B) RN - 0 (Viper Venoms) RN - 0 (sarafotoxins s6) RN - 44OLL8XEJ4 (BQ 788) RN - S2A8YZM151 (cyclo(Trp-Asp-Pro-Val-Leu)) SB - IM MH - Animals MH - Constriction MH - Dose-Response Relationship, Drug MH - Endothelin A Receptor Antagonists/pharmacology MH - Endothelin-1/*pharmacology MH - Hyperalgesia/*chemically induced/physiopathology MH - Male MH - Mice MH - Oligopeptides/pharmacology MH - Pain Measurement/drug effects MH - Peptides, Cyclic/pharmacology MH - Piperidines/pharmacology MH - Receptor, Endothelin A/physiology MH - Receptor, Endothelin B/agonists/physiology MH - Trigeminal Ganglion/drug effects/*physiology MH - Viper Venoms/pharmacology OTO - NOTNLM OT - ETA receptor OT - ETB receptor OT - heat hyperalgesia OT - trigeminal ganglion EDAT- 2018/03/24 06:00 MHDA- 2018/10/23 06:00 CRDT- 2018/03/24 06:00 PHST- 2017/08/24 00:00 [received] PHST- 2018/02/10 00:00 [accepted] PHST- 2018/03/24 06:00 [pubmed] PHST- 2018/10/23 06:00 [medline] PHST- 2018/03/24 06:00 [entrez] AID - 10.1111/jphp.12905 [doi] PST - ppublish SO - J Pharm Pharmacol. 2018 Jul;70(7):893-900. doi: 10.1111/jphp.12905. Epub 2018 Mar 23.