Preventive effect of rebamipide on N-methyl-N'-nitro-N-nitrosoguanidine-induced gastric carcinogenesis in rats

Hironobu Tsukamoto, Tsutomu Mizoshita, Takahito Katano, Noriyuki Hayashi, Keiji Ozeki, Masahide Ebi, Takaya Shimura, Yoshinori Mori, Satoshi Tanida, Hiromi Kataoka, Tetsuya Tsukamoto, Masae Tatematsu, Takashi Joh

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12 Citations (Scopus)

Abstract

Chemoprevention strategies against gastric cancer (GC) need to be explored in light of the fact that stomach cancer still occurs in the absence of Helicobacter pylori (HP) infection and following HP eradication. We evaluated the effect of rebamipide on N-methyl- N'-nitro- N-nitrosoguanidine (MNNG)-induced carcinogenesis in SD rats. Thirty-nine male rats were divided into four groups based on whether or not they were treated with rebamipide and/or MNNG: Control, Rebamipide, Control-M, and Rebamipide-M groups. From 8 weeks of age, rats in the Control-M and Rebamipide-M groups received MNNG in drinking water for 30 weeks. The Rebamipide and Rebamipide-M groups were administered 5 mg/kg/day of rebamipide. At 50 weeks, cancerous lesions were not observed in either the Control or Rebamipide groups. Nine rats in the Control-M group had developed GC, while four rats in the Rebamipide-M group had developed GC. The incidence of cancer in the Rebamipide-M group was significantly less than in the Control-M group (p<0.05), with a trend toward a lower incidence of invasive carcinoma in the Rebamipide-M group. Carcinomatous invasion into the muscularis propria was not observed in the Rebamipide-M group. In conclusion, the present study demonstrates that rebamipide suppresses. MNNG-induced carcinogenesis and may also inhibit progression of cancer in rats.

Original languageEnglish
Pages (from-to)271-277
Number of pages7
JournalExperimental and Toxicologic Pathology
Volume67
Issue number3
DOIs
Publication statusPublished - 01-03-2015

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine
  • Toxicology
  • Cell Biology

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