P21-06 Relative toxicity study of polystyrene, polypropylene, and polyethylene microplastic fragments in the respiratory system of mice

The toxicity of polyethylene microplastics on molecular and biochemical parameters in albino mice

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Researchers assessed the molecular and biochemical effects of polyethylene microplastic exposure in albino mice, finding dose-dependent toxicity across multiple organ systems, with measurable alterations in liver enzymes, oxidative stress markers, and blood cell parameters consistent with systemic health impacts.

Respiratory risks of microplastics and nanoplastics: Where? What? How?

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Researchers systematically reviewed experimental and epidemiological evidence linking inhaled microplastics and nanoplastics to pulmonary disorders including COPD, asthma, and fibrosis, identifying oxidative stress as the dominant initiating mechanism that cascades into mitochondrial dysfunction, inflammation, barrier disruption, and multiple forms of cell death.

Toxicological effects of different particle sizes and types of nano-plastics (NPs) on human lung cells: implications for the health risk of airborne microplastic pollution

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Researchers exposed human A549 alveolar cells to polystyrene and polymethylmethacrylate nanoplastics of 30 and 50 nm and found that smaller size and higher concentration produced stronger cytotoxicity, oxidative stress, inflammation, and apoptosis—with PS nanoparticles more toxic than PMMA—providing in vitro evidence of respiratory health risks from inhaled airborne nanoplastics.

Comparison of lung disorders following intratracheal instillation of polystyrene microplastics with different surface functional groups

Toxicity and Possibility of Microplastic Exposure While Living