PMID- 28797764 OWN - NLM STAT- MEDLINE DCOM- 20180524 LR - 20180524 IS - 1873-488X (Electronic) IS - 1056-8719 (Linking) VI - 88 IP - Pt 1 DP - 2017 Nov TI - Inflammatory pain assessment in the arthritis of the temporomandibular joint in rats: A comparison between two phlogistic agents. PG - 100-108 LID - S1056-8719(17)30039-4 [pii] LID - 10.1016/j.vascn.2017.08.001 [doi] AB - Temporomandibular joint (TMJ) disorders are a group of conditions that result in TMJ pain, which frequently limits basic daily activities. Experimental models that allow the study of the mechanisms underlying these inflammatory and pain conditions are of great clinical relevance. The aim of this study was to evaluate nociception, inflammation and participation of the macrophage/microglia cells in the arthritis of the TMJ induced by two phlogistic agents. 84 rats were divided into 2 groups: Zy, which received zymosan intra-articularly, or Cg, which received carrageenan intra-articularly. Mechanical nociception, total leukocyte influx to the synovial fluid and histopathological analyses were evaluated in the TMJ. The participation of macrophage/microglia located in trigeminal ganglia (TG) and in the subnucleus caudalis (V-SnC) was assessed immunohistochemically. Both agents induced mechanical hyperalgesia 6h after the induction, but a more persistent algesic state was perceived in the Cg group, which lasted for 120h. Even though both groups presented increased leukocyte influx, the Zy-group presented a more intense influx. Zymosan recruited resident macrophage in the trigeminal ganglia 24h after the injection. In the V-SnC, the group Cg presented a more prolonged immunolabeling pattern in comparison with the group Zy. It can be concluded that zymosan induced a more intense infiltrate and peripheral nervous changes, while Cg lead to a moderate TMJ inflammation with prominent changes in the V-SnC. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - de Araujo, Joana Claudia Bezerra AU - de Araujo JCB AD - Pharmacology Post Graduation Program, Department of Physiology and Pharmacology, Federal University of Ceara, Brazil. FAU - Gondim, Delane Viana AU - Gondim DV AD - Morphofunctional Sciences Post Graduation Program, Department of Morphology, Federal University of Ceara, Brazil. FAU - Cavalcante, Andre Luiz Cunha AU - Cavalcante ALC AD - Medical Sciences Post Graduation Program, Department of Clinical Medicine, Federal University of Ceara, Brazil. FAU - Lisboa, Mario Roberto Pontes AU - Lisboa MRP AD - Morphofunctional Sciences Post Graduation Program, Department of Morphology, Federal University of Ceara, Brazil. FAU - de Castro Brito, Gerly Anne AU - de Castro Brito GA AD - Morphofunctional Sciences Post Graduation Program, Department of Morphology, Federal University of Ceara, Brazil. FAU - Vale, Mariana Lima AU - Vale ML AD - Pharmacology Post Graduation Program, Department of Physiology and Pharmacology, Federal University of Ceara, Brazil; Morphofunctional Sciences Post Graduation Program, Department of Morphology, Federal University of Ceara, Brazil. Electronic address: mariana.vale@pq.cnpq.br. LA - eng PT - Journal Article DEP - 20170808 PL - United States TA - J Pharmacol Toxicol Methods JT - Journal of pharmacological and toxicological methods JID - 9206091 RN - 9000-07-1 (Carrageenan) RN - 9010-72-4 (Zymosan) SB - IM MH - Animals MH - Arthritis/chemically induced/diagnosis/pathology/*physiopathology MH - Carrageenan/pharmacology MH - Disease Models, Animal MH - Hyperalgesia/chemically induced/pathology/*physiopathology MH - Injections, Intra-Articular MH - Macrophages/drug effects/pathology MH - Male MH - Microglia/drug effects/pathology MH - Nociception/drug effects/physiology MH - Pain/chemically induced/pathology/*physiopathology MH - Pain Measurement/*methods MH - Rats MH - Rats, Sprague-Dawley MH - Rats, Wistar MH - Temporomandibular Joint Disorders/chemically induced/pathology/*physiopathology MH - Trigeminal Ganglion/cytology/drug effects MH - Zymosan/pharmacology EDAT- 2017/08/12 06:00 MHDA- 2018/05/25 06:00 CRDT- 2017/08/12 06:00 PHST- 2017/02/25 00:00 [received] PHST- 2017/07/21 00:00 [revised] PHST- 2017/08/05 00:00 [accepted] PHST- 2017/08/12 06:00 [pubmed] PHST- 2018/05/25 06:00 [medline] PHST- 2017/08/12 06:00 [entrez] AID - S1056-8719(17)30039-4 [pii] AID - 10.1016/j.vascn.2017.08.001 [doi] PST - ppublish SO - J Pharmacol Toxicol Methods. 2017 Nov;88(Pt 1):100-108. doi: 10.1016/j.vascn.2017.08.001. Epub 2017 Aug 8.