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Investigating the effects of nanoplastics on synaptic transmission
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Researchers identified nanoplastics in human brain tissue from cadavers and found concentrations were higher in the brain than in the liver or kidneys, with levels appearing to increase over time between 2016 and 2024, raising concern about the neurological implications of plastic particle accumulation in the human body.
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Researchers reviewed how micro- and nanoplastics ubiquitous in air, water, and soil can enter cells and disrupt neurological function, with evidence linking MNP exposure to oxidative stress, cellular damage, and impairment of neural signaling pathways.
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A study of submicron particles shed from synthetic textiles revealed a continuum between nanoplastics and oligomers, providing insight into their molecular origins and physicochemical properties. Understanding this transition zone is critical because nanoplastic-scale particles and plastic-derived oligomers are the least studied and potentially most biologically active fraction of microplastic pollution.
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Researchers reviewed how nanoplastics accumulate in and harm living organisms, finding that particle size, surface charge, exposure dose, and duration all influence toxicity — with smaller, charged particles penetrating cells more readily and chemical additives amplifying harm beyond the plastics themselves.
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