title: Effects of daphnodorin A, B and C, new flavans isolated from traditional Chinese medicine, on the 12-lipoxygenase and cyclooxygenase metabolism of arachidonic acid in rabbit platelets.
abstract: The effects of daphnodorin A, B and C, isolated from the root and bark of Daphne odora THUNB, on the activities of 12-lipoxygenase and cyclooxygenase in rabbit platelets were examined. Daphnodorin A and C were inhibitors of platelet 12-lipoxygenase and cyclooxygenase activities. Daphnodorin B had no effect on the two enzymatic pathways. The present data raise the possibility that daphnodorin A and C can be anti-thrombotic and anti-atherosclerotic drugs through the suppressive influence on the platelet 12-lipoxygenase and cyclooxygenase.
authors.affiliation: Department of Hygienic Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Sakuma
authors.forename: Y
authors.initials: Y
authors.lastname: Fujimoto
authors.forename: M
authors.initials: M
authors.lastname: Tsunomori
authors.forename: S
authors.initials: S
authors.lastname: Tagano
authors.forename: H
authors.initials: H
authors.lastname: Nishida
authors.forename: K
authors.initials: K
authors.lastname: Baba
authors.forename: T
authors.initials: T
authors.lastname: Fujita
mesh_terms: D019377:12-Hydroxy-5,8,10,14-eicosatetraenoic Acid / Q000097:blood; D000818:Animals; D001092:Arachidonate 12-Lipoxygenase / Q000187:drug effects* / Q000378:metabolism; D016718:Arachidonic Acid / Q000097:blood*; D001578:Benzopyrans / Q000008:administration & dosage / Q000494:pharmacology; D001792:Blood Platelets / Q000187:drug effects* / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid; D004305:Dose-Response Relationship, Drug; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology*; D005231:Fatty Acids, Unsaturated / Q000097:blood; D007306:Insecticides / Q000008:administration & dosage / Q000494:pharmacology*; D008297:Male; D008516:Medicine, Chinese Traditional; D011451:Prostaglandin-Endoperoxide Synthases / Q000187:drug effects* / Q000378:metabolism; D011817:Rabbits
chemical_list: D001578:Benzopyrans; D004365:Drugs, Chinese Herbal; D005231:Fatty Acids, Unsaturated; D007306:Insecticides; D016718:Arachidonic Acid; C008033:12-hydroxy-5,8,10-heptadecatrienoic acid; D019377:12-Hydroxy-5,8,10,14-eicosatetraenoic Acid; C055028:daphnodorin B; C055027:daphnodorin A; C055029:daphnodorin C; D001092:Arachidonate 12-Lipoxygenase; D011451:Prostaglandin-Endoperoxide Synthases