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Does PM

Yanan Cao1, Tianzi Zang2, Tianlai Qiu2

  • 1School of Public Health, Wuhan University, Wuhan, 430071, China.

Environmental Research
|June 2, 2023
PubMed
Summary
This summary is machine-generated.

Gestational exposure to fine particulate matter (PM1) impacts neonatal gut microbiota diversity and composition. This study reveals significant effects on neonatal gut bacteria and metabolic pathways, highlighting potential implications for maternal and infant health.

Keywords:
Ambient particlesGut microbiotaIntrauterine developmentNeonatesPM(1)Pregnancy

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Area of Science:

  • Environmental Health
  • Microbiome Research
  • Perinatal Epidemiology

Background:

  • Limited epidemiological data exists on the impact of prenatal exposure to fine particulate matter (PM1) on maternal and neonatal gut microbiota.
  • Previous research indicates ambient air pollutants can alter gut microbiota in infants by 6 months of age.

Purpose of the Study:

  • To investigate the association between gestational exposure to PM1 and the gut microbiota composition and function in mothers and neonates.
  • To provide epidemiological evidence on the effects of PM1 exposure during pregnancy.

Main Methods:

  • A mother-infant cohort in central China was used to estimate PM1 exposure based on residential addresses.
  • Gut microbiota was analyzed using 16S rRNA sequencing, with functional pathways assessed via Tax4fun.
  • Multiple linear regression and PERMANOVA were employed to evaluate PM1's impact on microbial diversity, composition, and function, controlling for other pollutants.

Main Results:

  • Gestational PM1 exposure positively correlated with neonatal gut microbiota alpha-diversity and explained 14.8% of community composition differences.
  • PM1 exposure did not affect maternal gut microbiota diversity or composition.
  • Specific bacterial taxa (Actinobacteria in mothers; Clostridium_sensu_stricto_1, Streptococcus, Faecalibacterium in neonates) and metabolic pathways (Nitrogen, Two-component system, Pyruvate, Purine, Aminoacyl-tRNA biosynthesis, Pyrimidine, Ribosome) were significantly altered.

Conclusions:

  • This study presents the first evidence linking prenatal PM1 exposure to significant alterations in maternal and neonatal gut microbiota.
  • Neonatal meconium microbiota diversity, composition, and function are particularly affected by gestational PM1 exposure.
  • Findings underscore the importance of considering PM1 exposure in maternal health management and future infant health outcomes.