Smoking Status and Occupational Exposure Affects Oxidative DNA Injury in Boilermakers Exposed to Metal Fume and Residual Oil Fly Ash

Details

• Personal Author:
  Aerchliman DB ; Christiani, David C. ; Houk RS ; Kim JY ; Mukherjee S ; Palmer JL ; Woodin MA
• Description:
  Epidemiologic studies demonstrate increased cancer incidence among workers exposed to polycyclic aromatic hydrocarbons (PAH) and metals, probably through cumulative oxidative DNA damage in response to carcinogens. Boilermakers are exposed to particulates of residual oil fly ash (ROFA) and metal fume that contain carcinogenic PAH and metals. We conducted a repeated-measures cohort study in boilermakers during the overhaul of an oil-fired boiler to determine a possible association between the level of 8-hydroxy-2'-deoxyguanosine (8-OH-dG; an oxidative injury biomarker) and biomarkers of PAH (1-hydroxypyrene; 1-OHP) and metal exposure. Preshift and postshift urine samples were analyzed for 8-OH-dG, cotinine, 1-OHP, and metals. Generalized estimating equations were used to model the multivariate relationship of 8-OH-dG to the explanatory variables of interest. Biomarker levels were determined for 181 urine samples from 20 male subjects (mean age 45 years, 50% smokers). Metal and 1-OHP levels increased cross-week and were affected by smoking status. Levels of 8-OH-dG were higher in nonsmokers at the start of the workweek yet declined after occupational exposure to similar levels as in smokers. Multivariate analysis indicated that metal x cotinine interaction terms for nickel, vanadium, chromium, and copper were significantly associated with the 8-OH-dG level, but there were differential effects depending on the metal. This study suggests that oxidative DNA damage in boilermakers is influenced by the interaction between occupational exposures and smoking status. In addition, boilermakers may have reduced ability to repair damaged DNA after ROFA and metal fume exposure. This finding has clinical relevance because these exposures may increase the cancer susceptibility of boilermakers. [Description provided by NIOSH]
• Subjects:
  Biomarkers Carcinogens Chromium Copper Environmental Exposure Epidemiology Hydrocarbons Metals Neoplasms Nickel Occupational Health Oxidants Particulate Matter Polycyclic Aromatic Hydrocarbons Risk Assessment Risk Factors Safety Smokers Urine Vanadium Workplace

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• Keywords:
  Cancer Deoxyribonucleic Acids DNA DNA Damage Exposure Levels Injuries Metal Fumes Models Oxidative Processes Particulates Polycyclic Aromatic Hydrocarbons Risk Factors Sampling Smoking Urinalysis Work Environment Workers

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• ISSN:
  1055-9965
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Iowa ; Massachusetts ; OSHA Region 1 ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  454-460
• Volume:
  13
• Issue:
  3
• NIOSHTIC Number:
  nn:20058636
• Citation:
  Cancer Epidemiol Biomark Prev 2004 Mar; 13(3):454-460
• Contact Point Address:
  David C. Christiani, Occupational Health Program, Department of Environmental Health, Harvard School of Public Health, Building I, Room 1402, 665 Huntington Avenue, Boston, MA 02115
• Email:
  dchris@hohp.harvard.edu
• CAS Registry Number:
  1-Hydroxypyrene (CAS RN 5315-79-7) ; Chromium (CAS RN 7440-47-3) ; Copper (CAS RN 7440-50-8) ; Nickel (CAS RN 7440-02-0) ; Vanadium (CAS RN 7440-62-2)
• Federal Fiscal Year:
  2004
• Performing Organization:
  Harvard School of Public Health
• Peer Reviewed:
  True
• Start Date:
  20030701
• Source Full Name:
  Cancer Epidemiology, Biomarkers & Prevention
• End Date:
  20050630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:db31ff82d06549ab0cc9e0736cea60b14878d5c161e5c4e199726be20315d9a90be3038df127dead50494a30a40d52766e865655e5f7d0ee9f17b47dcf9da9fd
• Download URL:
  https://stacks.cdc.gov/view/cdc/221678/cdc_221678_DS1.pdf
• File Type:
  [PDF - 240.98 KB ]