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. 1987 May;78(5):931-4.

Enhancement of carcinogenesis by the natural anticarcinogen indole-3-carbinol

G S Bailey, J D Hendricks, D W Shelton, J E Nixon, N E Pawlowski
  • PMID: 3106695

Enhancement of carcinogenesis by the natural anticarcinogen indole-3-carbinol

G S Bailey et al. J Natl Cancer Inst. 1987 May.

Abstract

Indole-3-carbinol (I3C), a natural constituent of cruciferous vegetables, is an inhibitor in several experimental animal models of carcinogenesis by polynuclear aromatic hydrocarbons or aflatoxin B1 (AFB1) when administered prior to or during carcinogen exposure. For assessment of the postinitiation effects of I3C, rainbow trout were exposed to dietary I3C in two different protocols--before and during AFB1 exposure or after AFB1 exposure only. Preinitiation exposure to I3C reduced AFB1-initiated hepatocellular carcinomas in trout as previously reported, but post-initiation I3C exposure strongly enhanced the tumor incidence above the positive AFB1 control. These results reveal the need for additional research to elucidate the overall effect of I3C on chemical carcinogenesis.

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