Inhibition of neutrophil elastase prevents the development of murine dextran sulfate sodium-induced colitis

Yuichi Morohoshi, Katsuyoshi Matsuoka, Hiroshi Chinen, Nobuhiko Kamada, Toshiro Sato, Tadakazu Hisamatsu, Susumu Okamoto, Nagamu Inoue, Hiromasa Takaishi, Haruhiko Ogata, Yasushi Iwao, Toshifumi Hibi

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

Background: Neutrophil elastase (NE) is a major secretory product from activated neutrophils and a major contributor to tissue destruction. However, little is known about the pathogenic contribution of NE to ulcerative colitis (UC). This study was designed to investigate the contribution of NE by measuring NE activity in plasma and colonic mucosal tissue from UC patients and a murine acute colitis model, and to elucidate the therapeutic effect of the NE-specific inhibitor ONO-5046. Methods: The NE enzyme activities in plasma and colonic mucosal tissue from UC patients were directly measured using an enzyme-substrate reaction. Acute colitis was induced in mice by administration of 1.5% dextran sulfate sodium (DSS) for 5 days. DSS-induced colitis mice were then treated with ONO-5046 (50 mg/kg body weight) intraperitoneally twice a day. Results: In UC patients, the NE enzyme activity was significantly elevated in both the plasma and colonic mucosal tissue compared with healthy controls. In DSS-induced colitis mice, the NE enzyme activity increased in parallel with the disease development. ONO-5046 showed therapeutic effects in DSS-treated mice by significantly reducing weight loss and histological score. ONO-5046 suppressed the NE enzyme activities in both plasma and culture supernatant of colonic mucosa from DSS-induced colitis mice. Conclusions: ONO-5046, a specific NE inhibitor, prevented the development of DSS-induced colitis in mice. NE therefore represents a promising target for the treatment of UC patients.

Original languageEnglish
Pages (from-to)318-324
Number of pages7
JournalJournal of gastroenterology
Volume41
Issue number4
DOIs
Publication statusPublished - 2006 Apr 1

Keywords

  • Dextran sulfate sodium-induced colitis
  • Neutrophil elastase
  • ONO-5046
  • Ulcerative colitis

ASJC Scopus subject areas

  • Gastroenterology

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