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Effects of weathering and simulated gastric fluid exposure on cellular responses to polystyrene particles
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Researchers studied the effects of weathering and simulated gastric fluid exposure on cellular responses to polystyrene particles. The study suggests that environmental weathering can alter how micro- and nanoplastics interact with biological systems, with potential implications for understanding human health effects from ingested plastic particles.
Micro and nanoplastics pose a growing environmental threat with complex implications for human health.
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The potential effects of in vitro digestion on the physicochemical and biological characteristics of polystyrene nanoplastics
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Researchers studied how the human digestive process changes the physical and biological properties of polystyrene nanoplastics. They found that digestive fluids altered the surface characteristics of the particles, potentially affecting how they interact with gut cells. The study suggests that the form of nanoplastics that actually reaches our intestines may behave differently than the pristine particles typically used in lab studies.
Pristine and artificially-aged polystyrene microplastic particles differ in regard to cellular response
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Researchers compared the cellular effects of pristine laboratory polystyrene microplastics with artificially aged particles that better represent real-world environmental conditions. They found that aged microplastics triggered different immune cell responses than pristine ones, including altered inflammatory signaling and uptake patterns. The study highlights that standard laboratory testing with new plastic particles may underestimate the actual biological effects of weathered microplastics found in the environment.
Aging Processes Dramatically Alter the Protein Corona Constitution, Cellular Internalization, and Cytotoxicity of Polystyrene Nanoplastics
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Researchers found that aging processes such as UV and ozone exposure dramatically alter how polystyrene nanoplastics interact with blood plasma proteins, form protein coronas, and enter cells. The study suggests that environmentally aged nanoplastics may have different biological effects than pristine particles, which has important implications for accurately assessing the health risks of real-world nanoplastic exposure.
Impact of Degradation of Polyethylene Particles on Their Cytotoxicity
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Researchers found that degradation of polyethylene particles altered their cytotoxicity, with weathered and fragmented PE showing different toxic effects on cells compared to pristine particles, suggesting environmental aging changes microplastic health risks.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.