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Artificial plasticenta: how polystyrene nanoplastics affect in-vitro cultured human trophoblast cells
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This lab study exposed placental cells (trophoblasts) to polystyrene nanoplastics and found signs of cell damage, metabolic stress, and structural breakdown under the microscope. The findings suggest that plastic nanoparticles could interfere with placental function during pregnancy, which raises concerns about potential effects on fetal development from everyday environmental plastic exposure.
Based on electron microscopy and immunofluorescence analysis and in vitro study, we demonstrate the cytotoxicity of PS-NPs in trophoblast cells together with ultrastructural alterations associated with cellular regression and degeneration typical of metabolic stress. An abnormal amount of NPs in the cells might determine a persistent cellular alarm CDR (cell danger response), the evolutionarily conserved metabolic response that protects the cells and hosts from harm triggered by chemical (as in the case of NPs/MPs), physical, or biological agents that exceed the cellular capacity for homeostasis. This in vitro study could further help to demonstrate that the inevitable exposure of MPs/NPs in the environment, which characterizes the modern world, might be partially responsible for the epidemic of non-transmissible disease.
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The potential toxicity of polystyrene nanoplastics to human trophoblasts in vitro
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Researchers used human trophoblast cells to evaluate the potential toxicity of 100-nanometer polystyrene nanoplastics on placental function. The study found that nanoplastic exposure affected trophoblast cell viability and function at certain concentrations, suggesting potential implications for understanding nanoplastic effects during pregnancy.
Exposure of the human placental primary cells to nanoplastics induces cytotoxic effects, an inflammatory response and endocrine disruption
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Scientists exposed human placental cells to polystyrene nanoparticles at concentrations found in human blood and observed cell death, inflammation, and disrupted hormone production, with smaller 20-nanometer particles causing more damage than larger ones. This is significant because the placenta is the critical barrier protecting developing babies, and these findings suggest nanoplastics may interfere with pregnancy hormones and placental function at real-world exposure levels.
Polystyrene microplastics impair trophoblast invasion in vitro and alter microRNA expression targeting the angiogenesis pathway
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In a lab study, researchers exposed placental cells to tiny polystyrene microplastic particles (the kind found in everyday plastic products) and found that the particles stuck to the cells and disrupted their ability to properly embed into tissue, a process crucial for building a healthy placenta. The microplastics also threw off genetic signals that control blood vessel growth, hinting at a possible way plastics could interfere with pregnancy. Since microplastics have already been found in human blood and placentas, this early-stage research raises concerns worth investigating further, though more studies are needed to confirm these effects happen in real pregnancies.
Nano-scale dangers: Unravelling the impact of nanoplastics on human trophoblast invasion
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Researchers exposed human trophoblast cells — which form the placenta — to 40 nm and 200 nm polystyrene nanoparticles and found that the smaller particles reduced expression of invasion-related proteins (integrins, N-cadherin, matrix metalloproteinase-2) and impaired cell migration, suggesting nanoplastics may interfere with early placental development.
Mechanistic toxicity assessment of differently sized and charged polystyrene nanoparticles based on human placental cells
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Researchers tested how polystyrene nanoplastics of different sizes and surface charges affect human placental cells, which are critical for fetal development. Smaller nanoplastics and those with positive surface charges caused the most damage, including oxidative stress, DNA damage, and cell death. The findings suggest that nanoplastic exposure could potentially pose risks to placental function, highlighting the need for further research on these particles' effects during pregnancy.
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