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June 20, 2026Environmental Science & Technology

Attribute-Driven Maternal–Fetal Transfer of Atmospheric Magnetite Nanoparticles Revealed by Single-Particle Analysis

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Authors

MWMengyuan WangLTLi TianJLJianong Lv

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Overview

Randomized trial demonstrates maternal-fetal transfer of atmospheric magnetite nanoparticles, suggesting health risks for development.

Key Points

  • The study aims to investigate the biodistribution and transfer of atmospheric magnetite nanoparticles from mothers to fetuses in a mouse model.
  • Used a whole-body inhalation model in pregnant C57BL/6 mice.
  • Magnetically extracted and characterized MNPs from maternal and fetal organs using high-resolution TEM and mass spectrometry.
  • Quantitative analysis of MNPs in maternal serum, liver, spleen, placenta, and lung.
  • 93% of total MNP burden was in maternal serum, liver, spleen, placenta, and lung.
  • Approximately 0.7% of MNPs were transferred to fetuses with over 60% retained in the fetal liver.
  • Identified selective enrichment of fine-sized MNPs containing Zn and Pb in fetal organs such as heart and brain.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/6a362e1edb0793dc1a536048https://doi.org/10.1021/acs.est.6c02876
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