PMID- 26854180 OWN - NLM STAT- MEDLINE DCOM- 20160728 LR - 20220316 IS - 1879-0631 (Electronic) IS - 0024-3205 (Linking) VI - 148 DP - 2016 Mar 1 TI - Diclofenac pretreatment effects on the toll-like receptor 4/nuclear factor kappa B-mediated inflammatory response to eccentric exercise in rat liver. PG - 247-53 LID - S0024-3205(16)30056-X [pii] LID - 10.1016/j.lfs.2016.02.006 [doi] AB - Acute exercise is a stress stimulus that may cause cell damage through the activation of the toll-like receptor (TLR)4 pathway, resulting in the translocation of nuclear factor kappa B (NF-kappaB) into the cell nucleus and the upregulation of inflammatory genes. Nonsteroidal anti-inflammatory drugs, such as diclofenac, are often prescribed to counteract exercise-induced inflammation. AIMS: This study analyzed effects of diclofenac pretreatment on the TLR4/NF-kappaB pathway in rat liver after an acute eccentric exercise. MAIN METHODS: Twenty male Wistar rats were divided in four groups: control-saline, control-diclofenac, exercise-saline and exercise-diclofenac. The rats received saline or diclofenac (10mg/kg) for 7days prior to an eccentric exercise bout. KEY FINDINGS: After exercise there was an increase in TLR4, myeloid differentiation primary response gene 88 (MyD88), TIR domain-containing adaptor inducing interferon (TRIF) and p65 NF-kappaB subunit protein levels. Exercise also resulted in increased mRNA and protein expression of interleukin (IL)-6, inducible nitric oxide synthase (iNOS) and tumor necrosis factor (TNF)-alpha. Proinflammatory effects of exercise were prevented by the administration of diclofenac, which blunted the activation of the TLR4/NF-kappaB pathway and the inflammatory response in the liver of exercised rats. SIGNIFICANCE: Results from the present study highlight the role of TLR4 as a target for anti-inflammatory interventions. CI - Copyright (c) 2016 Elsevier Inc. All rights reserved. FAU - Barcelos, Romulo Pillon AU - Barcelos RP AD - Departamento de Bioquimica e Biologia Molecular, Centro de Ciencias Naturais e Exatas (CCNE), Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil; Institute of Biomedicine (IBIOMED) and CIBERehd, University of Leon, Campus Universitario, 24071 Leon, Spain. Electronic address: romulo1604@hotmail.com. FAU - Bresciani, Guilherme AU - Bresciani G AD - Instituto de Actividad Fisica y Salud, Universidad Autonoma de Chile, Chile. FAU - Rodriguez-Miguelez, Paula AU - Rodriguez-Miguelez P AD - Division of Clinical Translational Science, Georgia Prevention Institute, Department of Pediatrics, Georgia Regents University, USA. FAU - Cuevas, Maria Jose AU - Cuevas MJ AD - Institute of Biomedicine (IBIOMED) and CIBERehd, University of Leon, Campus Universitario, 24071 Leon, Spain. FAU - Soares, Felix Alexandre Antunes AU - Soares FA AD - Departamento de Bioquimica e Biologia Molecular, Centro de Ciencias Naturais e Exatas (CCNE), Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil. FAU - Barbosa, Nilda Vargas AU - Barbosa NV AD - Departamento de Bioquimica e Biologia Molecular, Centro de Ciencias Naturais e Exatas (CCNE), Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil. FAU - Gonzalez-Gallego, Javier AU - Gonzalez-Gallego J AD - Institute of Biomedicine (IBIOMED) and CIBERehd, University of Leon, Campus Universitario, 24071 Leon, Spain. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160204 PL - Netherlands TA - Life Sci JT - Life sciences JID - 0375521 RN - 0 (Inflammation Mediators) RN - 0 (NF-kappa B) RN - 0 (Tlr4 protein, rat) RN - 0 (Toll-Like Receptor 4) RN - 144O8QL0L1 (Diclofenac) SB - IM MH - Animals MH - Diclofenac/*administration & dosage MH - Inflammation Mediators/antagonists & inhibitors/*metabolism MH - Liver/drug effects/*metabolism MH - Male MH - NF-kappa B/antagonists & inhibitors/*metabolism MH - Physical Conditioning, Animal/*physiology MH - Rats MH - Rats, Wistar MH - Toll-Like Receptor 4/antagonists & inhibitors/*metabolism MH - Treatment Outcome OTO - NOTNLM OT - Acute exercise OT - Diclofenac OT - Inflammation OT - Liver OT - NF-kappaB OT - TLR4 EDAT- 2016/02/09 06:00 MHDA- 2016/07/29 06:00 CRDT- 2016/02/09 06:00 PHST- 2015/09/08 00:00 [received] PHST- 2015/10/04 00:00 [revised] PHST- 2016/02/03 00:00 [accepted] PHST- 2016/02/09 06:00 [entrez] PHST- 2016/02/09 06:00 [pubmed] PHST- 2016/07/29 06:00 [medline] AID - S0024-3205(16)30056-X [pii] AID - 10.1016/j.lfs.2016.02.006 [doi] PST - ppublish SO - Life Sci. 2016 Mar 1;148:247-53. doi: 10.1016/j.lfs.2016.02.006. Epub 2016 Feb 4.