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Journal of Cancer Research and Clinical Oncology

, Volume 94, Issue 2, pp 201–206 | Cite as

Intestinal metaplasia and adenocarcinoma induced in the stomach of rats by N-propyl-N′-nitro-N-nitrosoguanidine

  • K. Sasajima
  • T. Kawachi
  • N. Matsukura
  • T. Sano
  • T. Sugimura
Original Papers Experimental Oncology

Summary

PNNG, the propyl derivative of MNNG, was administered to Wistar rats at a concentration of 59.5 μg/ml in the drinking water for 4, 8, and 12 months and the rats were killed in the 15th month. Intestinal metaplasia was induced in the glandular stomachs of 25%, 75%, and 83% of the rats treated with PNNG for 4, 8, and 12 months, respectively. Metaplastic glands were found in the pyloric region, especially near the pyloric ring. These glands contained goblet cells and columnar cells with striated borders. No tumors were found in the stomach of rats after 4-months treatment, but adenomas were found after 8-months treatment, and both adenomas and adenocarcinomas after 12-months treatment.

Key words

Intestinal metaplasia Gastric carcinoma N-Propyl-N′-nitro-N-nitrosoguanidine Wistar rats 

Abbreviations

PNNG

N-propyl-N′-nitro-N-nitrosoguanidine

MNNG

N-methyl-N′-nitro-N-nitrosoguanidine

PAS

Periodic acid-Schiff

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Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • K. Sasajima
    • 1
  • T. Kawachi
    • 1
  • N. Matsukura
    • 1
  • T. Sano
    • 1
  • T. Sugimura
    • 1
  1. 1.Biochemistry DivisionNational Cancer Center Research InstituteTokyoJapan

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