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P21-03: Neurotoxicity in rats following oral exposure to polystyrene nanoplastics
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Cellular Uptake and Nuclear Accumulation of Polystyrene Nanoplastics in 3T3 Fibroblasts and Hepatocytes of Rattus norvegicus
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Scientists found that tiny plastic particles called nanoplastics can get inside liver and connective tissue cells from rats, and even sneak into the cell's nucleus, where DNA is stored. Cells exposed to these plastics showed signs of stress and damage, including swelling and higher rates of cell death, suggesting these ultra-small plastic particles may be more harmful than previously thought. While this study used animal cells rather than human cells, it raises important questions about what everyday exposure to nanoplastics (found in food packaging, water, and other sources) might mean for our own cellular health.
[Effects of nanopolystyrene nanoplastic exposure on the development and neurotoxicity of fetal rats during gestation].
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Researchers found that gestational exposure to polystyrene nanoplastics in rats caused dose-dependent reductions in fetal body weight, body length, and brain development, with smaller 25 nm particles producing more pronounced neurotoxic effects than 50 nm particles.
To what extent are orally ingested nanoplastics toxic to the hippocampus in young adult rats?
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Researchers investigated polystyrene nanoplastic toxicity to the hippocampus in young adult rats, finding that oral exposure caused oxidative stress, inflammation, and histopathological changes in brain tissue with potential implications for cognitive function.
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