The neutrophil elastase inhibitor sivelestat suppresses accelerated gastrointestinal tumor growth via peritonitis after cecal ligation and puncture

Koshi Kumagai, Yoshirou Saikawa, Hiroya Takeuchi, Koichi Suda, Kazumasa Fukuda, Rieko Nakamura, Tsunehiro Takahashi, Hirofumi Kawakubo, Norihito Wada, Taku Miyasho, Yuko Kitagawa

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Background: We examined whether tumor growth is enhanced by cecal ligation and puncture (CLP) and suppressed by a neutrophil elastase inhibitor, sivelestat. Materials and Methods: C57BL/6 mice were divided in CLP/sivelestat, CLP alone, and control (simple laparotomy) groups. Murine CT26 colon carcinoma cells were injected subcutaneously into the back of each mouse and tumor growth and serum cytokine levels were assessed. Results: Mice subjected to CLP alone exhibited enhanced tumor growth compared to controls with subcutaneously injected CT26 cells (0.64±0.24 g vs. 0.021±0.027 g, p<0.001), while treatment with CLP/sivelestat produced smaller tumors than CLP alone (0.28±0.23 g vs. 0.64±0.24 g, p=0.006). Cytokine assays showed suppressed production of interleukin (IL)-6 and IL-10 in the CLP/sivelestat group, and increased IL-6 and IL-10 in the CLP-alone group. Conclusion: Intraabdominal inflammation induced by CLP enhances the growth of subcutaneously implanted tumors, while perioperative administration of sivelestat suppresses tumor growth by affecting systemic inflammation.

Original languageEnglish
Pages (from-to)3653-3660
Number of pages8
JournalAnticancer research
Volume33
Issue number9
Publication statusPublished - 2013 Sep

Keywords

  • CT26 murine colon cancer
  • Cecal ligation and puncture
  • Compensatory anti-inflammatory response syndrome
  • Neutrophil elastase inhibitor
  • Sivelestat

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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