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February 12, 2026MicroplasticsOpen Access

The Role of the Size and Surface Chemistry of Polystyrene Micro- and Nanobeads in the Interaction with an Advanced In Vitro Tri-Culture Intestinal Barrier Model

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Authors

SMStefania MarianoECElisabetta CarataEPElisa Panzarini

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Overview

Examines how variations in polystyrene bead characteristics affect barrier integrity in an intestinal barrier model, indicating significant health implications.

Key Points

  • The research aims to investigate how the size and surface chemistry of polystyrene beads influence their interactions with an intestinal barrier model.
  • Developed a tri-culture in vitro intestinal barrier model using Caco-2, HT29-MTX, and Raji B-induced M-like cells.
  • Characterized polystyrene beads of different sizes (40 nm and 200 nm) and surface modifications (carboxylated and aminated).
  • Exposed the intestinal model to polystyrene beads to assess effects on barrier integrity, uptake, and cytotoxicity.
  • Size and surface chemistry significantly influenced the interaction dynamics of the beads with the intestinal barrier.
  • Alterations were observed in cellular uptake rates and cytotoxic responses depending on bead characteristics.
  • The validated in vitro model proved useful for better understanding the health risks related to microplastic exposure.

Cite This Study

Mariano et al. (2026) studied this question.

synapsesocial.com/papers/698d6d9f5be6419ac0d52a6chttps://doi.org/10.3390/microplastics5010031
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