PMID- 22001991 OWN - NLM STAT- MEDLINE DCOM- 20120210 LR - 20200106 IS - 2299-5684 (Electronic) IS - 1734-1140 (Linking) VI - 63 IP - 4 DP - 2011 TI - Anti-inflammatory effects of LASSBio-998, a new drug candidate designed to be a p38 MAPK inhibitor, in an experimental model of acute lung inflammation. PG - 1029-39 AB - We investigated the effects of LASSBio-998 (L-998), a compound designed to be a p38 MAPK (mitogen-activated protein kinase) inhibitor, on lipopolysaccharide (LPS)-induced acute lung inflammation in vivo. BALB/c mice were challenged with aerosolized LPS inhalation (0.5 mg/ml) 4 h after oral administration of L-998. Three hours after LPS inhalation, bronchoalveolar lavage fluid was obtained to measure the levels of the proinflammatory cytokines TNF-alpha (tumor necrosis factor-alpha) and IL-1 (interleukin-1) and the chemokines MCP-1 (monocyte chemoattractant protein-1) and KC (keratinocyte chemoattractant). In addition, neutrophil infiltration and p38 MAPK phosphorylation was measured. L-998 inhibited LPS-induced production of TNF-alpha and IL-1beta and did not alter KC and MCP-1 levels. Furthermore, L-998 also significantly decreased neutrophil accumulation in lung tissues. As expected, L-998 diminished p38 MAPK phosphorylation and reduced acute lung inflammation. Inhibition of p38 MAPK phosphorylation by L-998 was also demonstrated in LPS-challenged murine C57BL/6 peritoneal macrophages in vitro, with concentration-dependent effects. L-998 suppressed LPS-induced lung inflammation, most likely by inhibition of the cytokine-p38 MAPK pathway, and we postulate that L-998 could be a clinically relevant anti-inflammatory drug candidate. FAU - Brando Lima, Aline C AU - Brando Lima AC AD - Laboratory of Cellular Immunopharmacology, Institute of Medical Biochemistry, Federal University of Rio de Janeiro, CCS, 21941-902, Rio de Janeiro, Brazil. FAU - Machado, Alexandre L AU - Machado AL FAU - Simon, Patricia AU - Simon P FAU - Cavalcante, Moises M AU - Cavalcante MM FAU - Rezende, Daniele C AU - Rezende DC FAU - Sperandio da Silva, Gilberto M AU - Sperandio da Silva GM FAU - Nascimento, Paulo Gustavo B D AU - Nascimento PG FAU - Quintas, Luis E M AU - Quintas LE FAU - Cunha, Fernando Q AU - Cunha FQ FAU - Barreiro, Eliezer J AU - Barreiro EJ FAU - Lima, Lidia M AU - Lima LM FAU - Koatz, Vera L G AU - Koatz VL LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Switzerland TA - Pharmacol Rep JT - Pharmacological reports : PR JID - 101234999 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Inflammation Mediators) RN - 0 (Lipopolysaccharides) RN - 0 (Quinolines) RN - 0 (ethyl 6-cyclohexylurea-(1,3)dioxolo(5,4-g)quinoline-7-carboxylate) RN - 8W8T17847W (Urea) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Anti-Inflammatory Agents/administration & dosage/*pharmacology MH - Bronchoalveolar Lavage Fluid MH - Disease Models, Animal MH - Dose-Response Relationship, Drug MH - In Vitro Techniques MH - Inflammation/*drug therapy/pathology MH - Inflammation Mediators/metabolism MH - Lipopolysaccharides/toxicity MH - Lung/drug effects/pathology MH - Macrophages, Peritoneal/drug effects/metabolism MH - Male MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred C57BL MH - Neutrophils/drug effects/metabolism MH - Phosphorylation/drug effects MH - Quinolines/administration & dosage/*pharmacology MH - Urea/administration & dosage/*pharmacology MH - p38 Mitogen-Activated Protein Kinases/*antagonists & inhibitors EDAT- 2011/10/18 06:00 MHDA- 2012/02/11 06:00 CRDT- 2011/10/18 06:00 PHST- 2010/10/24 00:00 [received] PHST- 2011/04/14 00:00 [revised] PHST- 2011/10/18 06:00 [entrez] PHST- 2011/10/18 06:00 [pubmed] PHST- 2012/02/11 06:00 [medline] AID - S1734-1140(11)70619-3 [pii] AID - 10.1016/s1734-1140(11)70619-3 [doi] PST - ppublish SO - Pharmacol Rep. 2011;63(4):1029-39. doi: 10.1016/s1734-1140(11)70619-3.