Inhibitory effect of (-)-epigallocatechin gallate on carcinogenesis with N-ethyl-N'-nitro-N-nitrosoguanidine in mouse duodenum

Jpn J Cancer Res. 1989 Jun;80(6):503-5. doi: 10.1111/j.1349-7006.1989.tb01666.x.

Abstract

(-)-Epigallocatechin gallate (EGCG) is the main polyphenolic constituent of green tea infusion and inhibits tumor promotion by teleocidin in two-stage carcinogenesis on mouse skin. In this work, EGCG was found to inhibit tumor promotion in the gastrointestinal tract in a model system of mouse duodenal carcinogenesis with N-ethyl-N'-nitro-N-nitrosoguanidine. The duodenal tumors that developed were studied stereomicroscopically and histologically.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Carcinogens
  • Catechin / analogs & derivatives*
  • Catechin / therapeutic use
  • Duodenal Neoplasms / chemically induced
  • Duodenal Neoplasms / pathology
  • Duodenal Neoplasms / prevention & control*
  • Male
  • Methylnitronitrosoguanidine / analogs & derivatives*
  • Mice
  • Mice, Inbred C57BL
  • Molecular Structure

Substances

  • Carcinogens
  • Methylnitronitrosoguanidine
  • ENNG
  • Catechin
  • epigallocatechin gallate