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In Utero Exposure to Persistent Organic Pollutants and Childhood Lipid Levels

Maegan E Boutot1, Brian W Whitcomb1, Nadia Abdelouahab2

  • 1Department of Biostatistics and Epidemiology, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, USA.

Metabolites
|October 22, 2021
PubMed

Insights

Prenatal exposure to persistent organic pollutants (POPs) like PBDEs and PCBs may lead to lower lipid levels in children. This suggests potential long-term impacts on lipid metabolism and liver health, consistent with animal studies.

Area of Science:

  • Environmental Health
  • Pediatric Endocrinology
  • Toxicology

Background:

  • Developmental exposure to polybrominated diphenyl ethers (PBDEs) can disrupt lipid metabolism in animal models.
  • Human studies investigating the link between prenatal exposure to persistent organic pollutants (POPs) and childhood lipid profiles are limited.

Purpose of the Study:

  • To examine the association between in utero exposure to specific PBDEs and polychlorinated biphenyls (PCBs) and lipid metabolism in children.
  • To explore potential long-term effects of prenatal POP exposure on lipid profiles in early childhood.

Main Methods:

  • Maternal plasma POPs (PBDEs and PCBs) were measured at delivery in the GESTation and Environment (GESTE) cohort.
  • Childhood serum lipid profiles (Total Cholesterol, Triglycerides, LDL-C, HDL-C, Total Lipids) were assessed at ages 6-7 in 147 children.
  • General linear regression models were employed to analyze the associations, adjusting for confounders and childhood POP levels.

Main Results:

  • Prenatal exposure to BDE-99 was significantly associated with lower childhood triglyceride levels (p=0.003).
  • Maternal PCB-138 exposure was linked to reduced childhood triglyceride (p=0.04), LDL-C (p=0.04), and total lipid (p=0.02) levels.
  • Non-significant trends suggested associations between BDE-99 and lower HDL-C and total lipids.

Conclusions:

  • In utero exposure to POPs, including BDE-99 and PCB-138, may be associated with sustained reductions in circulating lipids during childhood.
  • These findings suggest a potential mechanism for increased lipid accumulation in the liver, possibly contributing to Non-Alcoholic Fatty Liver Disease (NAFLD) development.
  • The results align with animal studies, highlighting the need for further investigation into the long-term health implications of prenatal POP exposure.

Keywords:
NAFLDdyslipidemiafetal programinglipid metabolismpersistent organic pollutants

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