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The Exposure Status and Biomarkers of Bisphenol A in Shipyard Workers  

Kim, Cheong-Sik (Department of Preventive Medicine, Seoul National University College of Medicine)
Park, Jun-Ho (Department of Preventive Medicine and Institute of Occupational Medicine, Yonsei University Wonju College of Medicine)
Cha, Bong-Suk (Department of Preventive Medicine and Institute of Occupational Medicine, Yonsei University Wonju College of Medicine)
Park, Jong-Ku (Department of Preventive Medicine and Institute of Occupational Medicine, Yonsei University Wonju College of Medicine)
Kim, Heon (Department of Preventive Medicine, College of Medicine, Chungbuk National University)
Chang, Soung-Hoon (Department of Preventive Medicine, College of Medicine, Kunkuk University)
Koh, Sang-Baek (Department of Occupational Medicine, Daewoo Hospital)
Publication Information
Journal of Preventive Medicine and Public Health / v.36, no.2, 2003 , pp. 93-100 More about this Journal
Abstract
Objectives : Because shipyard workers are involved with various manufacturing process, they are exposed to many kinds of hazardous materials. Welders especially, are exposed to bisphenol-A (BPA) during the welding and flame cutting of coated steel, This study was conducted to assess the exposure status of the endocrine disrupter based on the job-exposure matrix. The effects of the genetic polymorphism of xenobiotic enzyme metabolisms involved in the metabolism of BPA on the levels of urinary metabolite were investigated. Methods : The study population was recruited from a shipyard company in the f province. A total of 84 shipbuilding workers 47 and 37 in the exposed and control groups, respectively, were recruited for this study. The questionnaire variables included, age, sex, use of personal protective equipment, smoking, drinking and work duration. The urinary metabolite was collected in the afternoon and correction made for the urinary creatinine concentration. The of the CYP1A1, CYP2E1 and UGT1A6 genotypes were investigated using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) methods with the DNA extracted from venous blood. Results : The urinary BPA level in the welders group was significantly higher than in the control group (p<0.05). The urinary BPA concentration with the wild type UGT1A6 was higher than the other UGT1A6 genotypes, but with no statistical significant. From themultiple regression analysis of the urinary BPA, the regression coefficient for job grade was statistically significant (p<0.05). Conclusions : The grade of exposure to BPA affected the urinary BPA concentration was statistically significant. However, the genetic polymorphisms of xenobiotics enzyme metabolism were not statistically significant. Further investigation of the genetic polymorphisms with a larger sample size is needed.
Keywords
Bisphenol A; Genetic polymorphism; Biological makers;
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