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Food mutagens.

Radoslav Goldman1, Peter G Shields

  • 1Lombardi Cancer Center, Georgetown University Medical Center, Washington, DC, USA.

The Journal of Nutrition
|March 4, 2003
PubMed
Summary

Dietary mutagens in food can cause DNA damage, increasing cancer risk. Gene-environment interactions and epigenetic factors, alongside protective dietary components, influence this process, highlighting the need for validated biomarkers.

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Area of Science:

  • Nutritional Science
  • Molecular Biology
  • Genetics

Background:

  • Dietary behaviors and food mutagens are linked to human cancer risk.
  • Gene-environment interactions, influenced by dietary exposures, play a role in sporadic cancer development.
  • Food mutagens can induce DNA damage, including nucleotide alterations and chromosomal aberrations, initiating carcinogenesis.

Purpose of the Study:

  • To review the role of food mutagens in mutagenesis and carcinogenesis.
  • To discuss how heritable traits modify the effects of food mutagens.
  • To explore methods for identifying and evaluating the impact of food mutagens on cancer risk.

Main Methods:

  • Review of scientific literature on diet, food mutagens, DNA damage, and cancer.
  • Analysis of gene-environment interactions in the context of dietary exposures.
  • Discussion of epigenetic factors and oxidative stress in diet-cancer relationships.

Main Results:

  • Food mutagens like aflatoxin, N-nitrosamines, polycyclic aromatic hydrocarbons, and heterocyclic amines can cause specific DNA damage and target organs.
  • Heritable traits, including genes involved in metabolic activation, detoxification, and DNA repair, modulate mutagen effects.
  • Epigenetic changes, such as DNA methylation, and oxidative DNA damage are additional pathways linking diet and cancer, influenced by both mutagens and protective dietary components.

Conclusions:

  • Cancer development from dietary exposures results from an imbalance between carcinogenesis and anticarcinogenesis.
  • Validated biomarkers are crucial for assessing nutritional risks, though challenges remain in their application to target organs.
  • Understanding the complex interplay of food mutagens, host genetics, and epigenetic factors is essential for evaluating dietary cancer risks.

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