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Fetal exposure to propoxur and abnormal child neurodevelopment at 2 years of age

Enrique M Ostrea1, Alexis Reyes, Esterlita Villanueva-Uy

  • 1Department of Pediatrics, Hutzel Women's Hospital, the Carman and Ann Adams Department of Pediatrics, Children's Hospital of Michigan, Wayne State University, Detroit, MI, United States. eostrea@med.wayne.edu

Neurotoxicology
|December 14, 2011
PubMed

Insights

Prenatal exposure to the pesticide propoxur is linked to poorer motor development in children by age two. This study investigated pesticide effects on neurodevelopment in a Philippine cohort.

Area of Science:

  • Environmental Health
  • Neurodevelopmental Toxicology
  • Pediatric Epidemiology

Background:

  • Pesticide use is widespread in agricultural regions, raising concerns about potential neurodevelopmental impacts.
  • Prenatal exposure to environmental toxins can affect child development.
  • Limited data exists on the specific effects of propoxur and pyrethroids on early neurodevelopment.

Purpose of the Study:

  • To assess the association between fetal exposure to propoxur and pyrethroids and neurodevelopmental outcomes in children at two years of age.
  • To identify sensitive biomarkers for detecting prenatal pesticide exposure.

Main Methods:

  • Prospective cohort study in the Philippines with maternal recruitment during pregnancy.
  • Analysis of maternal and infant biological samples (hair, blood, meconium) for pesticide detection using gas chromatography/mass spectrometry.
  • Neurodevelopmental assessment of children at two years using the Griffiths Mental Developmental Scale.

Main Results:

  • Meconium analysis proved most sensitive for detecting fetal pesticide exposure.
  • Prenatal exposure to propoxur was significantly associated with poorer motor development at 24 months (β=-0.14, p<0.001) after controlling for confounders.
  • Higher exposure rates were observed for propoxur and grouped pyrethroids.

Conclusions:

  • Prenatal exposure to propoxur is associated with adverse motor development in children by two years of age.
  • Findings highlight the potential neurotoxic effects of common pesticides on child development.
  • Meconium is a valuable matrix for assessing prenatal pesticide exposure.
Abstract

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