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Environ Health Perspect. 2017 Sep 20;125(9):097018. doi: 10.1289/EHP1330.

Prenatal Exposure to Perfluoroalkyl Substances and Cardiometabolic Risk in Children from the Spanish INMA Birth Cohort Study.

Author information

1
ISGlobal, Centre for Research in Environmental Epidemiology (CREAL) , Barcelona, Spain.
2
Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP) , Madrid, Spain.
3
Universitat Pompeu Fabra , Barcelona, Spain.
4
Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València , Valencia, Spain.
5
Health Research Institute of Palma (IdISPa), University Hospital Son Espases , Palma de Mallorca, Spain.
6
Spanish Consortium for Research on Obesity and Nutrition (CIBEROBN) , Madrid, Spain.
7
Public Health Department of Gipuzkoa, San Sebastián, Spain.
8
Health Research Institute BIODONOSTIA , San Sebastián, Spain.
9
Institute for Occupational Medicine, RWTH Aachen University , Aachen, Germany.
10
Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.
11
Miguel Hernandez University , San Juan de Alicante, Spain.

Abstract

BACKGROUND:

Perfluoroalkyl substances (PFAS) may affect body mass index (BMI) and other components of cardiometabolic (CM) risk during childhood, but evidence is scarce and inconsistent.

OBJECTIVES:

We estimated associations between prenatal PFAS exposures and outcomes relevant to cardiometabolic risk, including a composite CM-risk score.

METHODS:

We measured perfluorohexanesulfonic acid (PFHxS), perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA), and perfluorononanoic acid (PFNA) in maternal plasma (first trimester). We assessed weight gain from birth until 6 mo. At 4 and 7 y, we calculated the age- and sex-specific z-scores for BMI, waist circumference (WC), and blood pressure (BP) (n≈1,000). At age 4, we calculated the age-, sex-, and region-specific z-scores for cholesterol, triglycerides (TGs), high-density (HDL-C), and low-density lipoprotein cholesterol (LDL-C) (n=627). At age 4, we calculated a CM-risk score (n=386) as the sum of the individual age-, sex-, and region-specific z-scores for WC, BP, HDL-C, and TGs. We used the average between the negative of HDL-C z-score and TGs z-score to give similar weight to lipids and the other components in the score. A higher score indicates a higher cardiometabolic risk at age 4.

RESULTS:

PFOS and PFOA were the most abundant PFAS (geometric mean: 5.80 and 2.32 ng/mL, respectively). In general, prenatal PFAS concentrations were not associated with individual outcomes or the combined CM-risk score. Exceptions were positive associations between prenatal PFHxS and TGs z-score [for a doubling of exposure, β=0.11; 95% confidence interval (CI): 0.01, 0.21], and between PFNA and the CM-risk score (β=0.60; 95% CI: 0.04, 1.16). There was not clear or consistent evidence of modification by sex.

CONCLUSIONS:

We observed little or no evidence of associations between low prenatal PFAS exposures and outcomes related to cardiometabolic risk in a cohort of Spanish children followed from birth until 7 y. https://doi.org/10.1289/EHP1330.

PMID:
28934720
PMCID:
PMC5915205
DOI:
10.1289/EHP1330
[Indexed for MEDLINE]
Free PMC Article

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