title: Anti-inflammatory potency of FR167653, a p38 mitogen-activated protein kinase inhibitor, in mouse models of acute inflammation.
abstract: The anti-inflammatory effect of FR167653 (1-[7-(4-fluorophenyl)-1,2,3,4-tetrahydro-8-(4-pyridyl)pyrazolo[5,1-c][1,2,4]triazin-2-yl]-2-phenylethanedione sulfate monohydrate), a p38 mitogen-activated protein (MAP) kinase inhibitor, was examined in two mouse models of acute inflammation. Carrageenan-induced paw edema was inhibited by pretreatment with FR167653, anti-tumor necrosis factor (TNF)-alpha antibody, and NS-398 (N-(2-cyclohexyloxy-4-nitrophenyl) methanesulfonamide), a selective cyclooxygenase-2 inhibitor. Carrageenan increased TNF-alpha and prostaglandin E(2) levels in the paw, both of which were suppressed by FR167653. Subcutaneous injection of lipopolysaccharide at the back of mouse caused local increase in vascular permeability determined by leakage of Pontamine sky blue. FR167653 dose-dependently inhibited the lipopolysaccharide-induced plasma leakage. FR167653 also inhibited lipopolysaccharide-induced increases in serum TNF-alpha level, and skin TNF-alpha and prostaglandin E(2) levels at the injection site. On the other hand, FR167653 did not reduce arachidonic acid-induced plasma leakage which is not mediated by cyclooxygenase-2. FR167653 exhibits anti-inflammatory effects against both carrageenan-induced paw edema and lipopolysaccharide-induced plasma leakage through inhibiting the synthesis of inflammatory mediators that are regulated by p38 MAP kinase.
authors.affiliation: Department of Anesthesiology, Tokyo Women's Medical University, School of Medicine, 8-1 Kawada-cho, Shinjuku, Tokyo 162-8666, Japan. nishiki@anes.twmu.ac.jp
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Nishikori
authors.forename: Kaoru
authors.initials: K
authors.lastname: Irie
authors.forename: Taiyo
authors.initials: T
authors.lastname: Suganuma
authors.forename: Makoto
authors.initials: M
authors.lastname: Ozaki
authors.forename: Toshimasa
authors.initials: T
authors.lastname: Yoshioka
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use*; D002351:Carrageenan / Q000009:adverse effects; D004487:Edema / Q000139:chemically induced / Q000517:prevention & control; D007249:Inflammation / Q000188:drug therapy* / Q000503:physiopathology; D008297:Male; D051379:Mice; D020928:Mitogen-Activated Protein Kinases / Q000037:antagonists & inhibitors*; D011720:Pyrazoles / Q000627:therapeutic use*; D011725:Pyridines / Q000627:therapeutic use*; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; C104334:FR 167653; D011720:Pyrazoles; D011725:Pyridines; D014409:Tumor Necrosis Factor-alpha; D002351:Carrageenan; D020928:Mitogen-Activated Protein Kinases