Carcinogenesis Advance Access published online on April 11, 2003
Carcinogenesis, doi:10.1093/carcin/bgg054
© 2003 by Oxford University Press
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MOLECULAR EPIDEMIOLOGY AND CANCER PREVENTION
1 Department of Preventive Medicine/Cancer Research Institute, Seoul National University, Seoul, Korea
* Corresponding author. E-mail: jangjjy{at}madang.ajou.ac.kr.
Received 8 November 2002
; revised 14 February 2003
; accepted 20 March 2003
Urinary 1-hyroxypyrene (1-OHP) has been used as a biomarker for assessing the level of exposure to environmental carcinogenic polycyclic aromatic hydrocarbons (PAHs). In order to perform the appropriate biological monitoring for examining the level of exposure to PAHs, this study investigated whether or not genetic polymorphisms of the metabolic enzymes, which might be involved in the metabolism of pyrene, affected the urinary 1-OHP levels in a population of 661 Koreans (male, 63%; female, 37%; mean-age, 36.5 yrs ± 11.1 yrs) who were not occupationally exposed to PAHs. Urinary 1-OHP was detected in 76% of the subjects (range, 0.001-3.8 µg/L). Among the physical and lifestyle factors, cigarette smoking was found to be associated with the urinary 1-OHP levels (p < 0.05). After adjusting for these factors, we found that the GSTT1 genotypes affected the urinary 1-OHP levels: i.e. the GSTT1 present subjects had approximately 1.5 times the urinary 1-OHP level than did the GSTT1 null subjects (p < 0.05). In the case of the subjects who were also GSTM1 null, this trend became stronger, i.e. the GSTT1 present subjects had approximately 2 times the urinary 1-OHP level (p < 0.01). However, the genetic polymorphism of the other metabolic enzymes, CYP1A1, CYP1B1, and GSTM1 alone, did not affect urinary the 1-OHP level. Therefore, this study suggests that the GSTT1 genetic polymorphism has the potential to affect the biological monitoring of PAHs with urinary 1-OHP, and might act as a genetic factor in PAH-related toxicity.
polycyclic aromatic hydrocarbons, 1-hydroxypyrene, biomarker, genetic polymorphism, cancer-susceptibility
2-1Genetic effects on urinary 1-hydroxypyrene levels in a Korean population
2 Department of Preventive Medicine and Public Health, Ajou University, Suwon, Korea
3 Department of Preventive Medicine and Public Health, Chungnam National University, Korea
4 Department of Preventive Medicine, College of Medicine, Dongkuk University, Korea
5 Department of Preventive Medicine, Korea University, Seoul, Korea
6 School of Public Health, Seoul National University, Seoul, Korea
7 Department of Environmental Health, University of Occupational and Environmental Kitakyushu, Japan
8 Department of Genetic Epidemiology, SNP Genetics, Seoul, Korea
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