Intrauterine exposure to per- and polyfluoroalkyl substances may harm children's lung function development

Area of Science:

• Environmental Health
• Toxicology
• Pediatric Health

Background:

• Per- and polyfluoroalkyl substances (PFAS) are persistent environmental pollutants with potential health effects.
• Animal studies suggest PFAS impact inflammatory responses and lung development.
• The effect of prenatal and childhood PFAS exposure on children's lung function is not well understood.

Purpose of the Study:

• To investigate in utero and childhood exposure to PFAS.
• To examine the relationship between PFAS exposure and lung function development in children.
• To identify specific PFAS compounds and exposure timings influencing lung function.

Main Methods:

• Recruited 165 children from the Taiwan Birth Panel Study.
• Collected cord blood plasma and children's serum at age eight.
• Analyzed PFAS levels using ultra-high-performance liquid chromatography/tandem mass spectrometry.
• Administered questionnaires and conducted lung function examinations at age eight.

Main Results:

• PFAS concentrations (PFOA, PFOS, PFNA, PFUA) were higher in cord blood than in eight-year-old serum.
• Cord blood PFAS levels were inversely associated with lung function measures (FEV1, FVC, PEF).
• Intrauterine PFOS exposure showed a consistent inverse correlation with lung function, especially in subgroups with lower birth weight and allergic rhinitis.

Conclusions:

• Intrauterine exposure to PFAS, particularly PFOS, may significantly impair lung development in children.
• Findings suggest a critical window of vulnerability during gestation for PFAS-related lung function deficits.
• Further research is warranted to understand the long-term implications of prenatal PFAS exposure on respiratory health.