title: Licochalcone A isolated from licorice suppresses lipopolysaccharide-stimulated inflammatory reactions in RAW264.7 cells and endotoxin shock in mice.
abstract: Licochalcone A (LicA), a major phenolic constituent of the licorice species Glycyrrhiza inflata, exhibits various biological properties, including chemopreventive, anti-bacterial, and anti-spasmodic activity. We report that LicA inhibits inflammatory reactions in macrophages and protects mice from endotoxin shock. Our in vitro experiments showed that LicA suppressed not only the generation of nitric oxide (NO) and prostaglandin (PG)E(2), but also the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 induced by lipopolysaccharide (LPS) in RAW264.7 cells. Similarly, LicA inhibited the production of inflammatory cytokines induced by LPS in RAW264.7 cells, including IL-1 beta and IL-6. In an animal model, LicA protected BALB/c mice from LPS-induced endotoxin shock, possibly through inhibiting the production of inflammatory cytokines and NO. Collectively, LicA inhibited the production of inflammatory mediators and may be a potential target for treatment of various inflammatory diseases.
authors.affiliation: Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Hallymdaehak-gil 39, Chuncheon, 200-702, Republic of Korea.
authors.forename: Hyuck-Se
authors.initials: HS
authors.lastname: Kwon
authors.forename: Jun Hong
authors.initials: JH
authors.lastname: Park
authors.forename: Dae Hwan
authors.initials: DH
authors.lastname: Kim
authors.forename: Yoon Hee
authors.initials: YH
authors.lastname: Kim
authors.forename: Jung Han Yoon
authors.initials: JH
authors.lastname: Park
authors.forename: Hyun-Kyung
authors.initials: HK
authors.lastname: Shin
authors.forename: Jin-Kyung
authors.initials: JK
authors.lastname: Kim
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology* / Q000627:therapeutic use; D002460:Cell Line; D047188:Chalcones / Q000302:isolation & purification / Q000494:pharmacology* / Q000627:therapeutic use; D006035:Glycyrrhiza / Q000737:chemistry*; D007249:Inflammation / Q000188:drug therapy / Q000378:metabolism; D018836:Inflammation Mediators / Q000378:metabolism; D008070:Lipopolysaccharides / Q000494:pharmacology*; D051379:Mice; D016328:NF-kappa B / Q000502:physiology; D012772:Shock, Septic / Q000188:drug therapy* / Q000378:metabolism / Q000401:mortality; D048051:p38 Mitogen-Activated Protein Kinases / Q000502:physiology
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D047188:Chalcones; D018836:Inflammation Mediators; D008070:Lipopolysaccharides; D016328:NF-kappa B; D048051:p38 Mitogen-Activated Protein Kinases; C070840:licochalcone A