Prenatal exposure to phthalate esters and behavioral syndromes in children at 8 years of age: Taiwan maternal and infant cohort study

Yin Ju Lien, Hsiu Ying Ku, Pen Hua Su, Suh Jen Chen, Hsiao Yen Chen, Pao Chi Liao, Wei J. Chen, Shu Li Wang

Research output: Contribution to journalArticle

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Abstract

Background: Few studies have shown an association between prenatal phthalate exposure and adverse effects on neurodevelopment and behavior in young children.

Objectives: We aimed to assess the relationship between prenatal exposure to phthalate esters and behavior syndromes in children at 8 years of age.

Methods: A total of 122 mother-child pairs from the general population in central Taiwan were studied from 2000 to 2009. Mono-methyl phthalate (MMP), mono-ethyl phthalate (MEP), monobutyl phthalate (MBP), mono-benzyl phthalate (MBzP), and three di-(2-ethylhexyl) phthalate (DEHP) metabolites—mono-2-ethylhexyl, mono-2-ethyl-5-hydroxyhexyl, and mono-2-ethyl-5-oxohexyl phthalates (MEHP, MEHHP, and MEOHP)—were measured in maternal urine collected during the third trimester of pregnancy using liquid chromatography-electrospray ionization-tandem mass spectrometry. Behavioral syndromes of children at 8 years of age were evaluated using the Child Behavior Checklist (CBCL). Associations between log10-transformed creatinine-corrected phthalate concentrations and standardized scores of the CBCL were estimated using linear regres-sion models or multinomial logistic regressions with adjustments for potential confounders.

Results: Externalizing problem scores were significantly higher in association with a 1-unit increase in log10-transformed creatinine-corrected concentrations of maternal MBP (β = 4.29; 95% CI: 0.59, 7.99), MEOHP (β = 3.74; 95% CI: 1.33, 6.15), and MEHP (β = 4.28 ; 95% CI: 0.03, 8.26) after adjusting for the child’s sex, intelligence, and family income. Meanwhile, MBP and MEOHP were significantly associated with Delinquent Behavior and Aggressive Behavior scores. The same pattern was found for borderline and/or clinical ranges.

Conclusions: Our findings suggest positive associations between maternal DEHP and dibutyl phthalate (DBP) exposure and externalizing domain behavior problems in 8-year-old children.

Original languageEnglish
Pages (from-to)95-100
Number of pages6
JournalEnvironmental Health Perspectives
Volume123
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

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Maternal Age
Taiwan
Esters
Cohort Studies
Mothers
Child Behavior
Checklist
Creatinine
Dibutyl Phthalate
Electrospray Ionization Mass Spectrometry
Third Pregnancy Trimester
Tandem Mass Spectrometry
Intelligence
Liquid Chromatography
phthalic acid
Logistic Models
Urine
Population
monobutyl phthalate

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

Cite this

Prenatal exposure to phthalate esters and behavioral syndromes in children at 8 years of age : Taiwan maternal and infant cohort study. / Lien, Yin Ju; Ku, Hsiu Ying; Su, Pen Hua; Chen, Suh Jen; Chen, Hsiao Yen; Liao, Pao Chi; Chen, Wei J.; Wang, Shu Li.

In: Environmental Health Perspectives, Vol. 123, No. 1, 01.01.2015, p. 95-100.

Research output: Contribution to journalArticle

Lien, Yin Ju ; Ku, Hsiu Ying ; Su, Pen Hua ; Chen, Suh Jen ; Chen, Hsiao Yen ; Liao, Pao Chi ; Chen, Wei J. ; Wang, Shu Li. / Prenatal exposure to phthalate esters and behavioral syndromes in children at 8 years of age : Taiwan maternal and infant cohort study. In: Environmental Health Perspectives. 2015 ; Vol. 123, No. 1. pp. 95-100.
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abstract = "Background: Few studies have shown an association between prenatal phthalate exposure and adverse effects on neurodevelopment and behavior in young children.Objectives: We aimed to assess the relationship between prenatal exposure to phthalate esters and behavior syndromes in children at 8 years of age.Methods: A total of 122 mother-child pairs from the general population in central Taiwan were studied from 2000 to 2009. Mono-methyl phthalate (MMP), mono-ethyl phthalate (MEP), monobutyl phthalate (MBP), mono-benzyl phthalate (MBzP), and three di-(2-ethylhexyl) phthalate (DEHP) metabolites—mono-2-ethylhexyl, mono-2-ethyl-5-hydroxyhexyl, and mono-2-ethyl-5-oxohexyl phthalates (MEHP, MEHHP, and MEOHP)—were measured in maternal urine collected during the third trimester of pregnancy using liquid chromatography-electrospray ionization-tandem mass spectrometry. Behavioral syndromes of children at 8 years of age were evaluated using the Child Behavior Checklist (CBCL). Associations between log10-transformed creatinine-corrected phthalate concentrations and standardized scores of the CBCL were estimated using linear regres-sion models or multinomial logistic regressions with adjustments for potential confounders.Results: Externalizing problem scores were significantly higher in association with a 1-unit increase in log10-transformed creatinine-corrected concentrations of maternal MBP (β = 4.29; 95{\%} CI: 0.59, 7.99), MEOHP (β = 3.74; 95{\%} CI: 1.33, 6.15), and MEHP (β = 4.28 ; 95{\%} CI: 0.03, 8.26) after adjusting for the child’s sex, intelligence, and family income. Meanwhile, MBP and MEOHP were significantly associated with Delinquent Behavior and Aggressive Behavior scores. The same pattern was found for borderline and/or clinical ranges.Conclusions: Our findings suggest positive associations between maternal DEHP and dibutyl phthalate (DBP) exposure and externalizing domain behavior problems in 8-year-old children.",
author = "Lien, {Yin Ju} and Ku, {Hsiu Ying} and Su, {Pen Hua} and Chen, {Suh Jen} and Chen, {Hsiao Yen} and Liao, {Pao Chi} and Chen, {Wei J.} and Wang, {Shu Li}",
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T2 - Taiwan maternal and infant cohort study

AU - Lien, Yin Ju

AU - Ku, Hsiu Ying

AU - Su, Pen Hua

AU - Chen, Suh Jen

AU - Chen, Hsiao Yen

AU - Liao, Pao Chi

AU - Chen, Wei J.

AU - Wang, Shu Li

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N2 - Background: Few studies have shown an association between prenatal phthalate exposure and adverse effects on neurodevelopment and behavior in young children.Objectives: We aimed to assess the relationship between prenatal exposure to phthalate esters and behavior syndromes in children at 8 years of age.Methods: A total of 122 mother-child pairs from the general population in central Taiwan were studied from 2000 to 2009. Mono-methyl phthalate (MMP), mono-ethyl phthalate (MEP), monobutyl phthalate (MBP), mono-benzyl phthalate (MBzP), and three di-(2-ethylhexyl) phthalate (DEHP) metabolites—mono-2-ethylhexyl, mono-2-ethyl-5-hydroxyhexyl, and mono-2-ethyl-5-oxohexyl phthalates (MEHP, MEHHP, and MEOHP)—were measured in maternal urine collected during the third trimester of pregnancy using liquid chromatography-electrospray ionization-tandem mass spectrometry. Behavioral syndromes of children at 8 years of age were evaluated using the Child Behavior Checklist (CBCL). Associations between log10-transformed creatinine-corrected phthalate concentrations and standardized scores of the CBCL were estimated using linear regres-sion models or multinomial logistic regressions with adjustments for potential confounders.Results: Externalizing problem scores were significantly higher in association with a 1-unit increase in log10-transformed creatinine-corrected concentrations of maternal MBP (β = 4.29; 95% CI: 0.59, 7.99), MEOHP (β = 3.74; 95% CI: 1.33, 6.15), and MEHP (β = 4.28 ; 95% CI: 0.03, 8.26) after adjusting for the child’s sex, intelligence, and family income. Meanwhile, MBP and MEOHP were significantly associated with Delinquent Behavior and Aggressive Behavior scores. The same pattern was found for borderline and/or clinical ranges.Conclusions: Our findings suggest positive associations between maternal DEHP and dibutyl phthalate (DBP) exposure and externalizing domain behavior problems in 8-year-old children.

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