title: COX, LOX and platelet aggregation inhibitory properties of Lauraceae neolignans.
abstract: The anti-inflammatory potential of 26 neolignans (14 of the bicyclooctane-type and 12 of the benzofuran-type), isolated from three Lauraceae species (Pleurothyrium cinereum, Ocotea macrophylla and Nectandra amazonum), was evaluated in vitro through inhibition of COX-1, COX-2, 5-LOX and agonist-induced aggregation of rabbit platelets. Benzofuran neolignans were found to be selective COX-2 inhibitors, whereas bicyclooctane neolignans inhibit selectively the PAF-action as well as COX-1 and 5-LOX. The neolignan 9-nor-7,8-dehydro-isolicarin B 15 and cinerin C 7 were found to be the most potent COX-2 inhibitor and PAF-antagonist, respectively. Nectamazin C 10 exhibited dual 5-LOX/COX-2 inhibition.
authors.affiliation: Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Química, Laboratorio de Investigación en Productos Naturales Vegetales, AA 14490, Bogotá DC, Colombia. edcoyb@unal.edu.co
authors.forename: Ericsson David
authors.initials: ED
authors.lastname: Coy
authors.forename: Luis Enrique
authors.initials: LE
authors.lastname: Cuca
authors.forename: Michael
authors.initials: M
authors.lastname: Sefkow
mesh_terms: D000818:Animals; D051545:Cyclooxygenase 1 / Q000187:drug effects; D051546:Cyclooxygenase 2 / Q000187:drug effects; D016861:Cyclooxygenase Inhibitors / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D019770:Lauraceae / Q000737:chemistry*; D016859:Lipoxygenase Inhibitors / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D010975:Platelet Aggregation Inhibitors / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D011817:Rabbits
chemical_list: D016861:Cyclooxygenase Inhibitors; D016859:Lipoxygenase Inhibitors; D010975:Platelet Aggregation Inhibitors; D051545:Cyclooxygenase 1; D051546:Cyclooxygenase 2