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Urinary polycyclic aromatic hydrocarbon metabolites as biomarkers of exposure to traffic-emitted pollutants.

Publication ,  Journal Article
Gong, J; Zhu, T; Kipen, H; Rich, DQ; Huang, W; Lin, W-T; Hu, M; Zhang, JJ
Published in: Environment international
December 2015

1-Nitro-pyrene has been considered a compound specific to diesel combustion emission, while 1- and 2-nitro-napthalene are mainly produced through photochemical conversion of naphthalene released to the atmosphere. Metabolites of these compounds may serve as biomarkers of exposure to traffic related pollutants. We collected urine samples from 111 healthy and non-smoking subjects within (i.e., during the Beijing Olympics) and outside (i.e., before and after the Olympics) a traffic control regime to improve Beijing's air quality. Urines were analyzed for the sum of 1&2-amino-naphthalene (metabolites of 1- and 2-nitro-naphthalene) and 1-amino-pyrene (a metabolite of 1-nitro-pyrene), using an HPLC-fluorescence method. Within the same time periods, PM2.5 mass and constituents were measured, including elemental carbon, sulfate, nitrate, PAHs, carbon monoxide, nitrogen dioxide, sulfur dioxide, ozone, and particle number concentrations. The associations between the urinary metabolites and air pollutants were analyzed using linear mixed-effects models. From the pre- to during-Olympic period, 1&2-amino-naphthalene and 1-hydroxy-pyrene decreased by 23% (p=0.066) and 16% (p=0.049), respectively, while there was no change in 1-amino-pyrene (2% increase, p=0.892). From during- to post-Olympic period, 1&2-amino-naphthalene, 1-amino-pyrene and 1-hydroxy-pyrene concentrations increased by 26% (p=0.441), 37% (p=0.355), and 3% (p=0.868), respectively. Furthermore, 1&2-amino-naphthalene and 1-hydroxy-pyrene were associated with traffic related pollutants in a similar lag pattern. 1-amino-pyrene was associated more strongly with diesel combustion products (e.g. PN and elemental carbon) and not affected by season. Time-lag analyses indicate strongest/largest associations occurred 24-72h following exposure. 1&2-amino-naphthalene and 1-hydroxy-pyrene can be used as a biomarker of exposure to general vehicle-emitted pollutants. More data are needed to confirm 1-amino-pyrene as a biomarker of exposure to diesel combustion emissions. Controlling creatinine as an independent variable in the models will provide a moderate adjusting effect on the biomarker analysis.

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Published In

Environment international

DOI

EISSN

1873-6750

ISSN

0160-4120

Publication Date

December 2015

Volume

85

Start / End Page

104 / 110

Related Subject Headings

  • Young Adult
  • Vehicle Emissions
  • Seasons
  • Polycyclic Aromatic Hydrocarbons
  • Models, Theoretical
  • Male
  • Linear Models
  • Humans
  • Hazardous Substances
  • Female
 

Citation

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ICMJE
MLA
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Gong, J., Zhu, T., Kipen, H., Rich, D. Q., Huang, W., Lin, W.-T., … Zhang, J. J. (2015). Urinary polycyclic aromatic hydrocarbon metabolites as biomarkers of exposure to traffic-emitted pollutants. Environment International, 85, 104–110. https://doi.org/10.1016/j.envint.2015.09.003
Gong, Jicheng, Tong Zhu, Howard Kipen, David Q. Rich, Wei Huang, Wan-Ting Lin, Min Hu, and Junfeng Jim Zhang. “Urinary polycyclic aromatic hydrocarbon metabolites as biomarkers of exposure to traffic-emitted pollutants.Environment International 85 (December 2015): 104–10. https://doi.org/10.1016/j.envint.2015.09.003.
Gong J, Zhu T, Kipen H, Rich DQ, Huang W, Lin W-T, et al. Urinary polycyclic aromatic hydrocarbon metabolites as biomarkers of exposure to traffic-emitted pollutants. Environment international. 2015 Dec;85:104–10.
Gong, Jicheng, et al. “Urinary polycyclic aromatic hydrocarbon metabolites as biomarkers of exposure to traffic-emitted pollutants.Environment International, vol. 85, Dec. 2015, pp. 104–10. Epmc, doi:10.1016/j.envint.2015.09.003.
Gong J, Zhu T, Kipen H, Rich DQ, Huang W, Lin W-T, Hu M, Zhang JJ. Urinary polycyclic aromatic hydrocarbon metabolites as biomarkers of exposure to traffic-emitted pollutants. Environment international. 2015 Dec;85:104–110.
Journal cover image

Published In

Environment international

DOI

EISSN

1873-6750

ISSN

0160-4120

Publication Date

December 2015

Volume

85

Start / End Page

104 / 110

Related Subject Headings

  • Young Adult
  • Vehicle Emissions
  • Seasons
  • Polycyclic Aromatic Hydrocarbons
  • Models, Theoretical
  • Male
  • Linear Models
  • Humans
  • Hazardous Substances
  • Female