Journal
PEDIATRICS
Volume 127, Issue 3, Pages E699-E706Publisher
AMER ACAD PEDIATRICS
DOI: 10.1542/peds.2010-0133
Keywords
prenatal pesticide exposure; neurodevelopment
Categories
Funding
- National Institutes of Health (NIH)
- National Institute of Environmental Health Sciences [5P01ES09600, P50ES015905, 5R01ES08977]
- US Environmental Protection Agency [R827027, 8260901, RR00645]
- Educational Foundation of America
- John and Wendy Neu Family Foundation
- New York Community Trust
- Trustees of the Blanchette Hooker Rockefeller
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OBJECTIVE: Recent pesticide-monitoring results suggest that a shift in residential pesticide exposure from organophosphorus insecticides to pyrethroid insecticides has occurred. Pyrethroid insecticides are potential neurodevelopmental toxicants and have not been evaluated for developmental toxicity. Our objective was to explore the association between prenatal exposure to permethrin (a common pyrethroid) and piperonyl butoxide (a pyrethroid synergist) and 36-month neurodevelopment. METHODS: Participants is this study were part of a prospective cohort of black and Dominican mothers and newborns living in low-income neighborhoods in New York City. We examined 36-month cognitive and motor development (using the Bayley Scales of Infant Development, second edition) as a function of permethrin levels measured in maternal and umbilical cord plasma collected on delivery and permethrin and piperonyl butoxide levels measured in personal air collected during pregnancy. All models were controlled for gender, gestational age, ethnicity, maternal education, maternal intelligence, quality of the home environment, and prenatal exposure to environmental tobacco smoke and chlorpyrifos. RESULTS: Prenatal exposure to permethrin in personal air and/or plasma was not associated with performance scores for the Bayley Mental Developmental Index or the Psychomotor Developmental Index. After data adjustment, children more highly exposed to piperonyl butoxide in personal air samples (> 4.34 ng/m(3)) scored 3.9 points lower on the Mental Developmental Index than those with lower exposures (95% confidence interval: -0.25 to -7.49). CONCLUSIONS: Prenatal exposure to piperonyl butoxide was negatively associated with 36-month neurodevelopment. Pediatrics 2011; 127: e699-e706
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