Polystyrene nanoplastics promotes inflammation and aging in young mice through the oral-gut microbiome axis - Takeaways - MDSpire

Polystyrene nanoplastics promotes inflammation and aging in young mice through the oral-gut microbiome axis

  • By

  • Ying Wang

  • Chunli Dong

  • Yi Xiao

  • May 28, 2026

  • 0 min

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  • 1

    Polystyrene nanoplastics (PS-NPs) disrupt the oral-gut microbiota axis, leading to inflammation and accelerated aging in young mice.

  • 2

    Exposure to PS-NPs significantly increases cellular senescence markers p21Cip1/Waf and p16Ink4a in the lungs and liver of young mice.

  • 3

    PS-NPs promote the release of inflammatory cytokines IL-1β, IL-6, and TNF-α by modulating the p38 MAPK signaling pathway.

  • 4

    16S rRNA sequencing reveals that PS-NPs exposure causes dysbiosis in oral and intestinal microbiota, altering microbial diversity.

  • 5

    The study provides insights into the toxicity of nanoplastics and suggests potential strategies for mitigating their health impacts.

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