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Origin, exposure routes and xenobiotics impart nanoplastics with toxic effects on freshwater bivalves
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Researchers found that nanoplastics collected from a natural river caused more gene expression disruption in freshwater bivalves than pristine polystyrene nanoplastics, with neurotoxic effects and synergistic interactions with aluminum that persisted even after depuration.
Gene expression was more disrupted in the case of diet-borne exposure of bivalves to NP-L (from the Leyre River) compared to NP-PS, accompanied by neurotoxic effects, synergistic effects with aluminium, and this, even after 7 days of depuration.
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Origin, exposure routes and xenobiotics impart nanoplastics with toxicity on freshwater bivalves
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Researchers exposed freshwater bivalves (Corbicula fluminea) to environmentally sourced nanoplastics of mixed polymer types for 21 days, finding that dietary and synergistic aluminum co-exposure triggered greater gene modulation than direct waterborne exposure, and that toxicity differed between environmental and laboratory-standard polystyrene nanoplastics.
Tracking nanoplastics in freshwater microcosms and their impacts to aquatic organisms
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Researchers tracked palladium-doped polystyrene nanoplastics in freshwater microcosms and found they caused toxic effects on cyanobacteria, green algae, and crustaceans at varying concentrations, with particle aggregation and surface interactions driving organism-specific impacts.
Toxicity assessment of environmental MPs and NPs and polystyrene NPs on the bivalve Corbicula fluminea using a multi-marker approach
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Researchers compared the toxicity of commercial polystyrene nanoplastics with environmental micro- and nanoplastics collected from the Garonne River on freshwater bivalves, finding that real-world environmental particles induced distinct biological responses compared to laboratory standards.
Toxicity of environmental and polystyrene plastic particles on the bivalve Corbicula fluminea: focus on the molecular responses
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Researchers exposed freshwater bivalves to environmental microplastics and nanoplastics collected from a river, as well as to laboratory polystyrene nanoparticles, and measured molecular-level responses. Gene expression analysis revealed that plastic particle exposure activated stress response and immune defense pathways in gill and visceral tissues. The study indicates that even environmentally relevant concentrations of plastic particles can trigger measurable biological stress in filter-feeding organisms.
Continuum of size from microplastics to nanoplastics: effects on the estuarine bivalve Scrobicularia plana at different levels of biological organization.
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Researchers exposed the estuarine bivalve Scrobicularia plana to environmental microplastics and nanoplastics at low concentrations (0.008-100 ug/L), along with standard polystyrene nanoplastics, finding ecotoxicological effects on gills and digestive gland tissues at multiple levels of biological organisation.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.