Polycyclic aromatic hydrocarbon-DNA adducts and the CYP1A1 restriction fragment length polymorphism

Journal Article · Sun Nov 01 00:00:00 EST 1992 · Environmental Health Perspectives; (United States)

DOI:https://doi.org/10.1289/ehp.9298191· OSTI ID:7026258

Shields, P G; Bowman, E D; Weston, A; Harris, C C; Sugimura, H; Caporaso, N E; Petruzzelli, S F ^[1]; Trump, B F ^[2]

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1. National Cancer Institute, Bethesda, MD (United States)
2. Univ. of Maryland, Baltimore, MD (United States)

Human cancer risk assessment at a genetic level involves the investigation of carcinogen metabolism and DNA adduct formation. Wide interindividual differences in metabolism result in different DNA adduct levels. For this and other reasons, many laboratories have considered DNA adducts to be a measure of the biologically effective dose of a carcinogen. Techniques for studying DNA adducts using chemically specific assays are becoming available. A modification of the [sup 32]P-postlabeling assay for polycyclic aromatic hydrocarbon DNA adducts described here provides potential improvements in quantification. DNA adducts, however, reflect only recent exposure to carcinogens; in contrast, genetic testing for metabolic capacity indicates the extent to which carcinogens can be activated and exert genotoxic effects. Such studies may reflect both separate and integrated risk factors together with DNA adduct levels. A recently described restriction fragment length polymorphism for the CYP1A1, which codes for the cytochrome P450 enzyme primarily responsible for the metabolic activation of carcinogenic polycyclic aromatic hydrocarbons, has been found to be associated with lung cancer risk in a Japanese population. In a subset of individuals enrolled in a US lung cancer case-control study, no association with lung cancer was found. 17 refs., 3 figs.

• OSTI ID: 7026258
• Journal Information: Environmental Health Perspectives; (United States), Vol. 98; ISSN 0091-6765
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
59 BASIC BIOLOGICAL SCIENCES
CARCINOGENS
METABOLIC ACTIVATION
DNA ADDUCTS
BIOLOGICAL INDICATORS
POLYCYCLIC AROMATIC HYDROCARBONS
BIOLOGICAL PATHWAYS
CARCINOGENESIS
ADDUCTS
AROMATICS
HYDROCARBONS
ORGANIC COMPOUNDS
PATHOGENESIS
560300* - Chemicals Metabolism & Toxicology
550200 - Biochemistry