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61,005 resultsShowing papers similar to Engineered biocorona on microplastics as a toxicity mitigation strategy in marine environment: Experiments with a marine crustacean Artemia salina
ClearAggravated Visual Toxicity of Eco-Corona on Micro(Nano)Plastics in Marine Medaka (Oryzias melastigma)
Researchers studied how a natural coating of biomolecules, called an eco-corona, that forms on micro and nanoplastics in seawater affects their toxicity to the eyes of marine medaka fish. They found that the eco-corona actually worsened visual damage compared to bare plastic particles, causing more severe retinal injury and eye cell death. The study reveals that the real-world biological coating on ocean plastics can amplify rather than reduce their harmful effects on marine life.
Eco-corona formation lessens the toxic effects of polystyrene nanoplastics towards marine microalgae Chlorella sp.
Researchers studied how eco-corona formation, the adsorption of algal exudates onto nanoplastic surfaces, affects the toxicity of polystyrene nanoplastics to the marine microalga Chlorella sp. The study found that eco-corona formation reduced the toxic effects of nanoplastics, suggesting that natural organic matter in marine environments may partially mitigate nanoplastic toxicity to algae.
Interplay between extracellular polymeric substances (EPS) from a marine diatom and model nanoplastic through eco-corona formation
Researchers incubated polystyrene nanoplastics with extracellular polymeric substances secreted by a marine diatom and found that these biological molecules rapidly formed an "eco-corona" coating on the nanoparticles, significantly slowing their aggregation and reducing oxidative stress in algae — suggesting that natural organic matter in seawater substantially alters nanoplastic behavior and toxicity.
Ecotoxicological significance of bio-corona formation on micro/nanoplastics in aquatic organisms
This review examined the ecotoxicological significance of bio-corona formation on micro- and nanoplastics in aquatic organisms, exploring how protein and biomolecule coatings alter the bioavailability, toxicity, and environmental fate of plastic particles.
Influence of algal-extracellular polymeric substances (EPS) on the pristine and combined toxicity of TiO2 NPs and PSNPs in Artemia salina: Eco-corona enhances the toxic effects
This study found that natural organic coatings from algae made nanoplastics and titanium dioxide nanoparticles more toxic to brine shrimp than the bare particles alone. The coatings increased particle size, which led to greater ingestion, higher oxidative stress, and increased mortality. This is important because in real-world water environments, nanoplastics are always coated with natural substances, meaning their actual toxicity to aquatic life may be higher than lab tests with clean particles suggest.
Aggravated VisualToxicity of Eco-Corona on Micro(Nano)Plasticsin Marine Medaka (Oryzias melastigma)
Researchers investigated how eco-corona formation—the coating of proteins and organic matter on micro- and nanoplastic surfaces in seawater—aggravated visual toxicity in marine medaka fish, finding that eco-corona altered particle uptake and enhanced phototoxic effects in ocular tissue.
Prepared polypropylene microplastics: formation of eco-corona in aquatic systems and their combined toxicity with cadmium in Artemia franciscana
Researchers studied how polypropylene microplastics form an eco-corona when exposed to different aquatic environments, including tap water, lake water, and marine water. They then assessed the combined toxicity of these eco-corona-coated microplastics with cadmium on brine shrimp. The findings suggest that the environmental coating acquired by microplastics in natural waters can influence how they interact with and deliver toxic metals to aquatic organisms.
Impact of Microbial Colonization of Polystyrene Microbeads on the Toxicological Responses in the Sea Urchin .
Sea urchins were more likely to internalize polystyrene microbeads coated with a bacterial biofilm than clean beads, suggesting that the ecological corona of microorganisms on plastic surfaces plays a role in how organisms interact with plastic particles. This finding helps explain how microplastics in the ocean are taken up by marine invertebrates and how the plastisphere changes the ecological risks of plastic pollution.
Nanoplastics and the Role of the Corona in the Biological Responses of Daphnia magna
Researchers exposed Daphnia magna neonates to nanoplastics coated with biomolecules from fetal bovine serum, Daphnia secretions, or algae, finding that coatings altered nanoplastic surface properties and affected internalization and biological responses differently depending on the biomolecule source.
Nanoplastics andthe Role of the Corona in the BiologicalResponses of Daphnia magna
Researchers studied how biomolecule coatings from fetal bovine serum, Daphnia secretions, and algae affected nanoplastic toxicity in Daphnia magna, finding that coatings altered the nanoplastic surface and affected internalization and biological responses differently depending on the biomolecule source.
Mechanisms of eco-corona effects on micro(nano)plastics in marine medaka: Insights into translocation, immunity, and energy metabolism
Researchers studied how eco-corona (biomolecule coatings that form on plastics in the ocean) affects the behavior of micro- and nanoplastics in marine medaka fish. They found that eco-corona facilitated the translocation of microplastics from the intestine to the liver and prolonged their retention time in larvae. The study suggests that naturally occurring biomolecules in marine environments can enhance the movement and toxic effects of plastic particles in fish.
The Composition of the Eco-corona Acquired by Micro- and Nanoscale Plastics Impacts on their Ecotoxicity and Interactions with Co-pollutants
This review examines how the 'eco-corona' — a layer of environmental biomolecules adsorbing onto plastic particle surfaces — alters the toxicity, transport, and interaction with co-pollutants of micro- and nanoplastics, emphasizing that this biological coating fundamentally changes how plastics behave in living organisms.
The interaction of micro/nano plastics and the environment: Effects of ecological corona on the toxicity to aquatic organisms.
This review examines how the ecological corona — the layer of organic matter, proteins, and microbes that form on micro- and nanoplastic surfaces in water — affects their toxicity to aquatic organisms. The ecological corona can either increase or decrease toxicity depending on its composition, making real-world plastic hazard assessment more complex than laboratory tests with clean particles suggest.
Cationic polystyrene nanoparticle and the sea urchin immune system: biocorona formation, cell toxicity, and multixenobiotic resistance phenotype
Researchers examined how cationic polystyrene nanoparticles interact with the sea urchin immune system, finding that the protein corona that forms on nanoparticle surfaces significantly modulates immune cell responses, highlighting that surface charge and biocorona composition shape nanoparticle toxicity in marine invertebrates.
Preferential adsorption of medium molecular weight proteins in extracellular polymeric substance alleviates toxicity of small-sized microplastics to Skeletonema costatum
Scientists discovered that natural substances secreted by marine algae form a coating on microplastic surfaces that actually reduces the toxicity of the smallest particles. This coating, made of proteins and sugars, changed the surface properties of the microplastics and helped the algae grow better despite the pollution. The finding suggests that natural biological processes in the ocean may partially buffer the harmful effects of microplastics, though this protection may vary with particle size.
Secreted protein eco-corona mediates uptake and impacts of polystyrene nanoparticles on Daphnia magna
Researchers discovered that proteins secreted by Daphnia magna create an eco-corona around polystyrene nanoparticles, increasing their uptake and toxicity. The study found that this protein coating also made the nanoparticles harder to remove from the gut, demonstrating a previously unknown biological mechanism that enhances the harmful effects of nanoplastics on this important indicator species.
Interactions between micro(nano)plastics and natural organic matter: implications for toxicity mitigation in aquatic species
This review examines how natural organic matter found in water can reduce the harmful effects of micro- and nanoplastics on aquatic species. Researchers found that natural organic matter forms a coating called an eco-corona on plastic particles, which can decrease their toxicity to organisms like fish and water fleas. The findings suggest that the natural composition of waterways plays an important role in moderating the ecological impact of plastic pollution.
Toxicity of micro/nanoplastics in the environment: Roles of plastisphere and eco-corona
This review examines how microplastics and nanoplastics gain biological coatings in the environment: larger microplastics develop a "plastisphere" of microorganisms on their surface, while smaller nanoplastics get wrapped in proteins and organic matter forming an "eco-corona." Both coatings change how toxic the particles are to living organisms and humans. The review highlights that studying plastic particles without these coatings, as most lab experiments do, may underestimate or mischaracterize their real-world health risks.
Interaction of nanoplastics with extracellular polymeric substances (EPS) in the aquatic environment: A special reference to eco-corona formation and associated impacts
This review examines how nanoplastics in aquatic environments interact with natural biomolecules to form an eco-corona coating that fundamentally changes their behavior and ecological impact. Researchers found that this biological coating alters the surface chemistry, transport, and toxicity of nanoplastic particles in ways that depend on environmental conditions. The study highlights that understanding eco-corona formation is essential for accurately assessing the real-world risks of nanoplastic pollution.
Influence of nanoplastic surface charge on eco-corona formation, aggregation and toxicity to freshwater zooplankton
Researchers examined how surface charge and natural organic matter influence the stability and toxicity of polystyrene nanoplastics to freshwater zooplankton. They found that positively charged nanoplastics were significantly more toxic than negatively charged ones, and that natural organic matter formed an eco-corona on the particles that reduced their toxicity. The study highlights that both particle surface properties and environmental conditions play critical roles in determining nanoplastic impacts on aquatic organisms.
Nanoparticle-Biological Interactions in a Marine Benthic Foraminifer
Researchers exposed single-celled marine organisms called foraminifera to three types of engineered nanoparticles — including polystyrene nanoplastics — and found that all three accumulated inside the cells and triggered oxidative stress (a form of cellular damage). This study shows that even microscopic seafloor organisms are vulnerable to nanoplastic pollution, expanding the known range of species harmed by plastic contamination.
Adsorption of bio-organic eco-corona molecules reduces the toxic response to metallic nanoparticles in Daphnia magna
Researchers coated metallic nanoparticles with bio-organic eco-corona molecules extracted from natural waters and tested toxicity to Daphnia magna, finding that the natural corona substantially reduced acute toxicity, suggesting that laboratory toxicity tests with clean nanoparticles may overestimate environmental risk.
Ingestion and bioaccumulation of polystyrene nanoplastics and their effects on the microalgal feeding of Artemia franciscana
Brine shrimp (Artemia franciscana) exposed to polystyrene nanoplastics ingested and bioaccumulated the particles, which also affected their feeding behavior on microalgae and caused changes in gut microbiota. These effects on a widely used aquaculture species raise concerns about nanoplastic contamination in marine food production.
Eco-Corona vs Protein Corona: Effects of Humic Substances on Corona Formation and Nanoplastic Particle Toxicity in Daphnia magna
Researchers studied how humic substances, common natural organic matter in aquatic environments, affect the toxicity and corona formation of nanoplastic particles in Daphnia magna. The study found that humic substances reduced acute nanoplastic toxicity at environmentally relevant concentrations by forming eco-coronas on particle surfaces, though gene expression changes related to detoxification and stress responses were still observed.