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Exposure to polycyclic aromatic hydrocarbons and newborn biometric indicators

Kinga Polańska1, Wojciech Hanke, Wojciech Sobala

  • 1Department of Environmental Epidemiology, Nofer Institute of Occupational Medicine, Łódź, Poland. kinga@imp.lodz.pl

International Journal of Occupational Medicine and Environmental Health
|February 11, 2011
PubMed

Insights

Polycyclic aromatic hydrocarbons (PAH) exposure during pregnancy negatively impacts fetal development, affecting birth weight and circumference. However, this association disappears when accounting for tobacco smoking.

Area of Science:

  • Environmental Health
  • Reproductive Toxicology
  • Pediatrics

Background:

  • Polycyclic aromatic hydrocarbons (PAH) are environmental pollutants linked to adverse health outcomes.
  • Prenatal exposure to environmental toxins can significantly impact fetal development.
  • Identifying sources of PAH exposure during pregnancy is crucial for public health.

Purpose of the Study:

  • To investigate the association between prenatal exposure to polycyclic aromatic hydrocarbons (PAH) and fetal growth parameters.
  • To assess the role of active and passive smoking as a source of PAH exposure in pregnant women.

Main Methods:

  • Prospective cohort study involving 449 mother-child pairs in Poland.
  • Biomarker for PAH exposure: 1-hydroxypyrene (1-HP) in urine, measured via HPLC.
  • Assessment of smoking exposure using saliva cotinine levels via LC-ESI+MS/MS.

Main Results:

  • PAH exposure, measured by 1-HP, was significantly associated with lower birth weight, chest circumference, and cephalisation index.
  • These associations remained significant after adjusting for multiple confounding factors.
  • After controlling for active and passive smoking (cotinine levels), the statistical significance of PAH associations with fetal growth was lost.

Conclusions:

  • Prenatal PAH exposure can adversely affect fetal development, including birth weight and circumference.
  • Tobacco smoking is a significant source of PAH exposure.
  • The observed negative impacts of PAH on fetal growth may be largely explained by concurrent tobacco smoke exposure.
Abstract

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