Abarema cochliacarpos reduces LPS-induced inflammatory response in murine peritoneal macrophages regulating ROS-MAPK signal pathway

• Published in: Journal of ethnopharmacology Vol. 149; no. 1; pp. 140 - 147
• Main Authors: Sánchez-Fidalgo, S., da Silva, M.S., Cárdeno, A., Aparicio-Soto, M., Salvador, M.J., Frankland Sawaya, A.C.H., Souza-Brito, A.R.M., de la Lastra, C. Alarcón
• Format: Journal Article
• Language: English
• Published: Ireland Elsevier Ireland Ltd 26.08.2013
• Subjects: (+)-Catechin; Abarema; Abarema cochliacarpos (Mimosaceae); alcohols; Animals; anti-inflammatory activity; Anti-Inflammatory Agents - isolation & purification; Anti-Inflammatory Agents - pharmacology; Brazil; Cell Survival - drug effects; cell viability; Cells, Cultured; colitis; Cyclooxygenase; Dose-Response Relationship, Drug; Ethnopharmacology; Fabaceae - chemistry; flavonoids; fluorescence; Inducible nitric oxide synthase; inflammation; Lipopolysaccharides - pharmacology; macrophages; Macrophages, Peritoneal - drug effects; Macrophages, Peritoneal - enzymology; Macrophages, Peritoneal - immunology; MAP Kinase Signaling System - drug effects; MAPK; Mice; mitogen-activated protein kinase; nitric oxide; nitric oxide synthase; Peritoneal macrophages; Plant Extracts - isolation & purification; Plant Extracts - pharmacology; prostaglandin synthase; reactive oxygen species; Reactive Oxygen Species - metabolism; Spectrometry, Mass, Electrospray Ionization; stomach ulcers; ultra-performance liquid chromatography; Western blotting; Brazil; Abarema cochliacarpos (Mimosaceae); (+)-Catechin; Cyclooxygenase; MAPK; Inducible nitric oxide synthase; Peritoneal macrophages
• ISSN: 0378-8741; 1872-7573
• DOI: 10.1016/j.jep.2013.06.013

Abarema cochliacarpos (Gomes) Barneby and Grimes (Fabaceae), known by the vulgar name of Babatenã, has been traditionally used in Northeast Brazil, as an anti-inflammatory remedy. Previous studies have demonstrated its anti-inflammatory and antiulcer effects in skin lesion, alcohol gastric ulcer and acute and chronic colitis. The present study was designed to evaluate the antioxidant and anti-inflammatory effects of the butanolic fraction from A. cochliacarpos (BFAC) and its major flavonoid, (+)-catechin, in LPS-stimulated murine peritoneal macrophages. Moreover, we studied the role of mitogen-activated protein kinase (MAPK)s and NF-kB signaling pathways possibly involved in the beneficial effects. The quantification of the extract was carried out by ultra-performance liquid chromatography analysis. Cell viability was determined using SRB assay. Nitric oxide (NO) production was analyzed by Griess method and intracellular reactive oxygen species (ROS) by fluorescence analysis. In addition, cyclooxygenase (COX-2) and inducible nitric oxide synthase (iNOS) expression, MAPK activation and IkappaBalpha (IKBα) degradation, were determined by Western blot. After BFAC characterization, (+)-catechin was revealed as its major constituent. Both BFAC and (+)-catechin, exerted significant anti-oxidant and anti-inflammatory effects inhibiting LPS-induced intracellular ROS and NO production in peritoneal macrophages. Additionally, the extract but also its major component reduced pro-inflammatory proteins expression probably through c-Jun N-terminal kinase and p38 MAPK signaling pathways. These data suggest that the beneficial effects of BFAC might be mediated, at least in part, by the presence of (+)-catechin. Conclusively our findings confirm the potential of A. cochliacarpos as a new therapeutic strategy for the management of inflammatory and oxidative stress-related diseases. [Display omitted]