Maternal Prenatal Urinary Phthalate Metabolite Concentrations and Child Mental, Psychomotor and Behavioral Development at Age Three Years.
Summary of "Maternal Prenatal Urinary Phthalate Metabolite Concentrations and Child Mental, Psychomotor and Behavioral Development at Age Three Years."
Background: Research suggests prenatal phthalate exposures affect child executive function and behavior. Objectives: To evaluate associations between phthalate metabolite concentrations in maternal prenatal urine and mental, motor and behavioral development in children at age 3 years. Methods: Mono-n-butyl phthalate (MnBP), mono-benzyl phthalate (MBzP), mono-isobutyl phthalate (MiBP) and 4 di-2-ethylhexyl phthalate metabolites were measured in a spot urine sample collected from 319 women during the 3rd trimester. At child age 3 years, the Mental Development Index (MDI) and Psychomotor Development Index (PDI) were measured using the Bayley Scales of Infant Development II, and behavior problems were assessed by maternal report on the Child Behavior Checklist. Results: Child PDI scores decreased with increasing logeMnBP (estimated adjusted coefficient [β]= -2.81 [95% confidence interval (CI) -4.63, -1.0]) and logeMiBP (β= -2.28 [95% CI -3.90, -0.67]); odds of motor delay increased significantly (estimated adjusted odds ratios (OR)=1.64 [95%CI 1.10, 2.44] and 1.82 [95% CI 1.24, 2.66 per logeMnBP and logeMiBP). In girls, MDI scores decreased with increasing logeMnBP (β= -2.67 `[95% CI -4.70, -0.65]); the child sex difference in odds of mental delay was significant (p=0.037). The OR for clinically withdrawn behavior were 2.23 (95% CI 1.27, 3.92) and 1.57 (95% CI 1.07, 2.31) per loge unit increase in MnBP and MBzP, respectively; for clinically internalizing behaviors, the OR was 1.43 (95% 1.01, 1.90) per loge unit increase in MBzP. Significant child sex differences were seen in associations between MnBP and MBzP and behaviors in internalizing domains (p<0.05). Conclusion: Certain prenatal phthalate exposures may decrease child mental and motor development and increase internalizing behaviors.
Affiliation
Columbia University.
Journal Details
This article was published in the following journal.
Name: Environmental health perspectives
ISSN: 1552-9924
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21893441
- DOI: http://dx.doi.org/10.1289/ehp.1103705
Medical and Biotech [MESH] Definitions
Prenatal Care
Care provided the pregnant woman in order to prevent complications, and decrease the incidence of maternal and prenatal mortality.
Child, Exceptional
A child whose needs, abilities, or other characteristics vary so much from the average in mental, physical, or social areas that a greater than usual level of services is needed to facilitate the child's maximum potential development.
Pregnancy, High-risk
Pregnancy in which the mother and/or FETUS are at greater than normal risk of MORBIDITY or MORTALITY. Causes include inadequate PRENATAL CARE, previous obstetrical history (ABORTION, SPONTANEOUS), pre-existing maternal disease, pregnancy-induced disease (GESTATIONAL HYPERTENSION), and MULTIPLE PREGNANCY, as well as advanced maternal age above 35.
Child Of Impaired Parents
Child with one or more parents afflicted by a physical or mental disorder.
Ultrasonography, Prenatal
The visualization of tissues during pregnancy through recording of the echoes of ultrasonic waves directed into the body. The procedure may be applied with reference to the mother or the fetus and with reference to organs or the detection of maternal or fetal disease.
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