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Surface Pattern Analysis of Microplastics and Their Impact on Human-Derived Cells
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This study analyzed the surface patterns of PVC and ABS microplastics to create a standardized reference, then tested their effects on human-derived cells, finding potential cytotoxic impacts that varied by polymer type.
Plastic is produced, used, and accumulated exponentially. Humans can take it through the food chain, and microplastics can be potentially toxic to humans. In this study, we analyzed the surface patterns of microplastics and their effects on humans using polyvinyl chloride (PVC) and acrylonitrile butadiene styrene (ABS). The surface analysis of these microplastics will be used as a standardized measurement method for microplastic detection and will be used as an indicator of the impact of environmental pollution caused by microplastics on humans. We have used a statistical method to analyze the shape of the milled microplastics and estimated the local curvature for each plastic type and found that PVC microplastics have a more rugged shape than the ABS microplastics. We also analyzed the toxicity of PVC and ABS microplastics. Larger PVC tended to induce the release of interleukin 6 (IL-6) and tumor necrosis factor-α (TNF-α). Smaller ABS induced the release of IL-6 at high concentrations. However, larger ABS tended to induce the release of TNF-α at all concentrations. Thus, we concluded that microplastics can induce immune responses.
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Researchers compared cellular toxicity of microparticles made from polystyrene, polyethylene, PVC, PLA, and cellulose acetate in murine macrophages and epithelial cells, finding that polymer type influences cytotoxicity and uptake behavior. All particle types were ingested by macrophages, but their surface chemistry and charge affected the degree of cellular damage.
In vitro chemical and physical toxicities of polystyrene microfragments in human-derived cells
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Researchers conducted in vitro toxicology testing on randomly-shaped polystyrene microfragments, which better represent real-world microplastics than the spherical microbeads commonly used in studies. The study found that irregular surface roughness contributed to physical cytotoxicity, and that chemical toxicity from leached additives also played a role, suggesting previous studies using uniform spheres may underestimate actual microplastic hazards.
in vitro Chemical and physical toxicity of polystyrene microplastics in human-derived cells
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Lab experiments exposing human-derived cells to irregularly shaped polystyrene microplastics — which more closely resemble environmentally weathered particles — found dose-dependent cytotoxicity. The study suggests that the shapes of microplastics matter for their toxicity, and that research using only smooth spherical beads may underestimate real-world risks.
An assessment of the toxicity of polypropylene microplastics in human derived cells
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Researchers assessed the toxicity of polypropylene microplastics on human-derived cell lines and found that the particles triggered inflammatory responses and oxidative stress at concentrations relevant to environmental exposure. The microplastics also affected cell viability and caused measurable changes in immune-related gene expression. The study raises concerns about potential health effects from chronic human exposure to one of the most commonly produced plastic types.
Influence of the polymer type on the impact of microplastic particles
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Researchers compared the cellular effects of polystyrene, polyethylene, PVC, and PLA microparticles on murine macrophages and epithelial cells, assessing uptake and cytotoxicity. All polymer types were ingested by macrophages, but the degree of cytotoxicity varied by polymer composition.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.