5 Key Takeaways

• 1

  O-PTIR spectroscopy was used to identify microplastics in intestinal epithelial cells without labels or dyes.

• 2

  The study utilized irregularly shaped microplastics from common household polymers to better simulate real-world exposure.

• 3

  O-PTIR provided sub-micron resolution, allowing for the chemical distinction of microplastic particles within cell monolayers.

• 4

  Cells exposed to microplastics exhibited signs of oxidative stress and protein structural changes, indicating biological effects.

• 5

  The integrated approach of O-PTIR confirmed microplastic presence and identity while assessing localized biochemical effects.