Related Experiment Video
Updated: Jan 9, 2026
08:11
Ecotoxicological Effects of Microplastics on Bird Embryo Development by Hatching without Eggshell
Published on: August 14, 2021
5.0K
Overall effects of microplastics on brain
Su-Jun Fang1,2, Zhao-di Yin3, Li-Fan Li1
1Department of Pharmacy, The First Hospital of Putian City, Putian University, Fujian, China.
Frontiers in Toxicology
|December 8, 2025
Summary
Microplastic and nanoplastic pollution poses a significant threat to brain health, crossing barriers to induce neuroinflammation and cognitive deficits. Further research is needed to understand human risks from environmental exposures.
Area of Science:
- Environmental Science
- Neuroscience
- Toxicology
Background:
- Microplastic (MP) and nanoplastic (NP) pollution is a global environmental concern.
- Growing evidence suggests potential neurotoxic effects and impacts on brain health.
Purpose of the Study:
- To review and synthesize current research on the effects of MPs/NPs on the brain.
- To provide a comprehensive overview of mechanisms, outcomes, and research gaps.
Main Methods:
- Literature review of recent scientific findings.
- Synthesis of evidence on MP/NP translocation, neurotoxic pathways, and observed effects in experimental models.
Main Results:
- MPs/NPs can cross the blood-brain barrier and placenta, accessing the CNS.
- They induce oxidative stress, neuroinflammation, mitochondrial dysfunction, and neurotransmitter disruption.
- NPs promote protein aggregation linked to neurodegeneration; observed outcomes include cognitive and behavioral impairments.
Conclusions:
- MPs/NPs exhibit neurotoxic potential, contributing to pathologies resembling human neurodegenerative and neurodevelopmental disorders.
- Toxicity is influenced by particle properties, co-exposures, and host factors; the gut-brain axis plays a role.
- Significant research gaps exist regarding human risk assessment for chronic, low-level exposures and aged particles.
