PMID- 17371808 OWN - NLM STAT- MEDLINE DCOM- 20070730 LR - 20190108 IS - 0022-3565 (Print) IS - 0022-3565 (Linking) VI - 321 IP - 3 DP - 2007 Jun TI - Anti-inflammatory activity of a potent, selective leukotriene A4 hydrolase inhibitor in comparison with the 5-lipoxygenase inhibitor zileuton. PG - 1154-60 AB - Leukotriene A(4) hydrolase (LTA(4)H) catalyzes production of the proinflammatory lipid mediator, leukotriene (LT) B(4), which is implicated in a number of inflammatory diseases. We have identified a potent and selective inhibitor of both the epoxide hydrolase and aminopeptidase activities of recombinant human LTA(4)H (IC(50), approximately 10 nM). In a murine model of arachidonic acid-induced ear inflammation, the LTA(4)H inhibitor, JNJ-26993135 (1-[4-(benzothiazol-2-yloxy)-benzyl]-piperidine-4-carboxylic acid), dose-dependently inhibited ex vivo LTB(4) production in blood, in parallel with dose-dependent inhibition of neutrophil influx (ED(50), 1-3 mg/kg) and ear edema. In murine whole blood and in zymosan-induced peritonitis, JNJ-26993135 selectively inhibited LTB(4) production, without affecting cysteinyl leukotriene production, while maintaining or increasing production of the anti-inflammatory mediator, lipoxin (LX) A(4). The 5-lipoxygenase (5-LO) inhibitor zileuton showed inhibition of LTB(4), LTC(4), and LXA(4) production. Although zileuton inhibited LTB(4) production in the peritonitis model more effectively than the LTA(4)H inhibitor, the influx of neutrophils into the peritoneum after 1 and 2 h was significantly higher in zileuton- versus JNJ-26993135-treated animals. This difference may have been mediated by the increased LXA(4) levels in the presence of the LTA(4)H inhibitor. The selective inhibition of LTB(4) production by JNJ-26993135, while increasing levels of the anti-inflammatory mediator, LXA(4), may translate to superior therapeutic efficacy versus 5-LO or 5-LO-activating protein inhibitors in LTB(4)-mediated inflammatory diseases. FAU - Rao, Navin L AU - Rao NL AD - Johnson and Johnson Pharmaceutical Research and Development LLC, 3210 Merryfield Row, San Diego, CA 92121, USA. FAU - Dunford, Paul J AU - Dunford PJ FAU - Xue, Xiaohua AU - Xue X FAU - Jiang, Xiaohui AU - Jiang X FAU - Lundeen, Katherine A AU - Lundeen KA FAU - Coles, Fawn AU - Coles F FAU - Riley, Jason P AU - Riley JP FAU - Williams, Kacy N AU - Williams KN FAU - Grice, Cheryl A AU - Grice CA FAU - Edwards, James P AU - Edwards JP FAU - Karlsson, Lars AU - Karlsson L FAU - Fourie, Anne M AU - Fourie AM LA - eng PT - Comparative Study PT - Journal Article DEP - 20070319 PL - United States TA - J Pharmacol Exp Ther JT - The Journal of pharmacology and experimental therapeutics JID - 0376362 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Benzothiazoles) RN - 0 (Eicosanoids) RN - 0 (Enzyme Inhibitors) RN - 0 (Lipoxins) RN - 0 (Lipoxygenase Inhibitors) RN - 0 (Piperidines) RN - 0 (Recombinant Proteins) RN - 0 (lipoxin A4) RN - 1HGW4DR56D (Leukotriene B4) RN - 27YG812J1I (Arachidonic Acid) RN - 2CU6TT9V48 (Leukotriene C4) RN - 7W7511NPF8 (1-(4-(benzothiazol-2-yloxy)benzyl)piperidine-4-carboxylic acid) RN - EC 3.3.2.- (Epoxide Hydrolases) RN - V1L22WVE2S (zileuton) RN - V38765PUZ6 (leukotriene A4 hydrolase) RN - X6Q56QN5QC (Hydroxyurea) SB - IM MH - Animals MH - Anti-Inflammatory Agents, Non-Steroidal/metabolism/*pharmacology MH - Arachidonic Acid/pharmacology MH - Ascitic Fluid/drug effects/metabolism MH - Benzothiazoles/metabolism/*pharmacology/therapeutic use MH - Dogs MH - Ear/pathology MH - Edema/pathology/prevention & control MH - Eicosanoids/metabolism MH - Enzyme Inhibitors/metabolism/pharmacology MH - Epoxide Hydrolases/*antagonists & inhibitors/genetics/metabolism MH - Female MH - Humans MH - Hydroxyurea/*analogs & derivatives/metabolism/pharmacology MH - Inflammation/metabolism/pathology/prevention & control MH - Leukotriene B4/metabolism MH - Leukotriene C4/metabolism MH - Lipoxins/metabolism MH - *Lipoxygenase Inhibitors MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred Strains MH - Neutrophil Infiltration/drug effects MH - Peritonitis/metabolism/pathology/prevention & control MH - Piperidines/metabolism/*pharmacology/therapeutic use MH - Recombinant Proteins/chemistry/metabolism EDAT- 2007/03/21 09:00 MHDA- 2007/07/31 09:00 CRDT- 2007/03/21 09:00 PHST- 2007/03/21 09:00 [pubmed] PHST- 2007/07/31 09:00 [medline] PHST- 2007/03/21 09:00 [entrez] AID - jpet.106.115436 [pii] AID - 10.1124/jpet.106.115436 [doi] PST - ppublish SO - J Pharmacol Exp Ther. 2007 Jun;321(3):1154-60. doi: 10.1124/jpet.106.115436. Epub 2007 Mar 19.