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A Western-style diet shapes the gut and liver responses to low-dose, fit-for-purpose polystyrene nanoplastics in mice
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A subchronic mouse study found that low-dose polystyrene nanoplastics designed to mimic real-world particle characteristics impaired gut and liver health in a non-monotonic, diet-dependent manner, with Western-style diet amplifying the effects.
Subchronic exposure to fit-for-purpose polystyrene nanoplastics impairs gut and liver health at low doses with non-monotonic effects in a diet-dependent manner.
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Oral exposure to high concentrations of polystyrene microplastics alters the intestinal environment and metabolic outcomes in mice
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In a mouse study, oral exposure to high concentrations of polystyrene microplastics caused fatty liver disease and abnormal blood lipid levels even without prior gut leakiness. The microplastics triggered intestinal inflammation through immune cells, disrupted gut bacteria, and altered how the body processes nutrients. These results suggest that swallowing microplastics could contribute to metabolic problems and liver disease in humans.
Oral exposure to polyethylene microplastics of adult male mice fed a normal or western-style diet: impact on gut and gut-liver axis homeostasis
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Researchers orally exposed adult male mice to polyethylene microplastics under both normal and high-fat diets, assessing effects on the gastrointestinal tract. The study found that diet influences microplastic-induced gut changes, with greater effects observed in animals fed a western-style high-fat diet.
Oral exposure to polyethylene microplastics of adult male mice fed a normal or western-style diet: impact on gut and gut-liver axis homeostasis
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Researchers exposed adult male mice to polyethylene microplastics on normal or Western diet for 90 days, examining synergistic effects between plastic and dietary stress on gut and liver health. Microplastic exposure disrupted gut barrier integrity, altered the microbiome, and affected liver homeostasis, with some effects differing between normal and Western diet groups.
Polystyrene nanoplastics induce intestinal and hepatic inflammation through activation of NF-κB/NLRP3 pathways and related gut-liver axis in mice
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In a mouse study, ingested polystyrene nanoplastics accumulated in the gut and liver and triggered inflammation through specific immune pathways, damaging the intestinal lining and allowing bacterial toxins to leak into the liver. This gut-liver connection suggests that swallowing nanoplastics could set off a chain reaction of inflammation affecting multiple organs in the body.
Polystyrene micro- and nanoplastics in a colitis mouse model – effects on biodistribution, macrophage polarization, and gut microbiome
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Researchers exposed colitis mouse models to polystyrene micro- and nanoplastics to test whether MNP exposure worsens inflammatory bowel disease, finding that MNPs altered biodistribution and exacerbated inflammatory responses in animals with pre-existing gut inflammation.
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