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P-156 cellular uptake of polystyrene nanoplastics by oocytes and their impact on subsequent embryo development: a preliminary insight using a bovine in vitro model
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P-156 cellular uptake of polystyrene nanoplastics by oocytes and their impact on subsequent embryo development: a preliminary insight using a bovine in vitro model
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Researchers investigated whether polystyrene nanoplastics could penetrate cumulus-enclosed oocytes and alter embryo development using a bovine in vitro model, finding after 24-hour exposure that nanoplastics entered the extracellular matrix and cytoplasm of peripheral cumulus cells but did not penetrate oocytes or alter preimplantation embryo development.
Uptake of polystyrene nanoplastics by cumulus-oocyte complexes impairs oocyte and embryo development
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Researchers found that 50-nanometer polystyrene nanoplastics can penetrate bovine egg cells during in vitro fertilization, significantly delaying both egg maturation and early embryo development. Larger 200-nanometer particles entered the surrounding cumulus cells but could not penetrate the egg itself, suggesting that particle size is a critical factor in nanoplastic reproductive effects.
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.
57 Nanoplastics are taken up by the oocyte and delay embryo development
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Scientists found that tiny plastic particles (nanoplastics) can get inside egg cells and slow down early embryo growth in animal studies. This matters because it raises concerns about whether the microplastics we're constantly exposed to in food, water, and air could affect fertility and healthy pregnancies in humans, too. More research is needed to confirm these effects in people, but the findings are an early warning sign worth paying attention to.
Effect of polystyrene nanoplastics on in vitro maturation of pig cumulus-encosed oocytes
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Researchers exposed pig egg cells to polystyrene nanoplastics during laboratory maturation and found that while the eggs still completed their basic development stages, the nanoplastics significantly increased harmful reactive oxygen species levels. This oxidative stress reduced the quality of resulting embryos, as indicated by fewer cells per embryo, suggesting nanoplastic exposure could be a concern for reproductive health.
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