title: Inhibition of inducible isoforms of cyclooxygenase and nitric oxide synthase by flavonoid hesperidin in mouse macrophage cell line.
abstract: Previous data have shown that a citrus flavanone, hesperidin possesses chemopreventive efficacies. We designed to investigate the inhibitory effect of hesperidin on lipopolysaccharide (LPS)-induced over-expression of cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS) proteins, over-production of prostaglandin E2 (PGE2) and nitric oxide (NO) using mouse macrophage cells. Treatment with hesperidin suppressed production of PGE2, nitrogen dioxide (NO2), and expression of iNOS protein. In the case of COX-2, hesperidin did not affect the protein level. Our data indicate hesperidin as a COX-2 and iNOS inhibitor, which might be related to the anti-inflammatory and anti-tumorigenic efficacies.
authors.affiliation: Department of Tumor Pathology, Gifu University School of Medicine, 40 Tsukasa-machi, Gifu 500-8705, Japan. f2101002@guedu.cc.gifu-u.ac.jp
authors.forename: Keiko
authors.initials: K
authors.lastname: Sakata
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Hirose
authors.forename: Zheng
authors.initials: Z
authors.lastname: Qiao
authors.forename: Takuji
authors.initials: T
authors.lastname: Tanaka
authors.forename: Hideki
authors.initials: H
authors.lastname: Mori
mesh_terms: D000818:Animals; D015153:Blotting, Western; D002460:Cell Line; D051546:Cyclooxygenase 2; D015232:Dinoprostone / Q000378:metabolism; D004791:Enzyme Inhibitors / Q000494:pharmacology; D005419:Flavonoids / Q000494:pharmacology; D006569:Hesperidin / Q000494:pharmacology*; D007527:Isoenzymes / Q000037:antagonists & inhibitors*; D008070:Lipopolysaccharides / Q000494:pharmacology; D008264:Macrophages / Q000187:drug effects* / Q000201:enzymology; D051379:Mice; D009569:Nitric Oxide / Q000378:metabolism; D019001:Nitric Oxide Synthase / Q000037:antagonists & inhibitors*; D052247:Nitric Oxide Synthase Type II; D009585:Nitrogen Dioxide / Q000378:metabolism; D011451:Prostaglandin-Endoperoxide Synthases
chemical_list: D004791:Enzyme Inhibitors; D005419:Flavonoids; D007527:Isoenzymes; D008070:Lipopolysaccharides; D009569:Nitric Oxide; D006569:Hesperidin; D019001:Nitric Oxide Synthase; D052247:Nitric Oxide Synthase Type II; C496317:Nos2 protein, mouse; D051546:Cyclooxygenase 2; D011451:Prostaglandin-Endoperoxide Synthases; D015232:Dinoprostone; D009585:Nitrogen Dioxide