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61,005 resultsShowing papers similar to 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
ClearAlgal extracellular polymeric substances (algal-EPS) for mitigating the combined toxic effects of polystyrene nanoplastics and nano-TiO2 in Chlorella sp.
This study found that algal extracellular polymeric substances can coat both polystyrene nanoplastics and titanium dioxide nanoparticles and reduce their combined toxic effects on the green alga Chlorella, suggesting that natural organic matter in marine environments can buffer combined nanoparticle toxicity.
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.
Engineered biocorona on microplastics as a toxicity mitigation strategy in marine environment: Experiments with a marine crustacean Artemia salina
Researchers investigated whether coating microplastics with biological molecules (a "biocorona") could reduce their toxicity to the marine crustacean Artemia salina. They found that biocorona formation using cell-free extracts from brine shrimp and algae significantly lowered oxidative stress and cell damage caused by both aminated and carboxylated polystyrene microplastics. The study suggests that natural biological coatings in the ocean may help mitigate some of the harmful effects of microplastic pollution on marine organisms.
Algal EPS modifies the toxicity potential of the mixture of polystyrene nanoplastics (PSNPs) and triphenyl phosphate in freshwater microalgae Chlorella sp.
Researchers found that a natural substance produced by algae (extracellular polymeric substances, or EPS) can reduce the toxic effects of nanoplastics combined with a flame retardant chemical in freshwater. The EPS coated the nanoplastics and reduced their ability to harm algal cells. This natural protective mechanism could play an important role in how aquatic ecosystems buffer against the combined threat of microplastics and chemical pollutants.
Toxicity evaluation of nano-TiO2 in the presence of functionalized microplastics at two trophic levels: Algae and crustaceans
Researchers examined how different surface-functionalized polystyrene microplastics affect the toxicity of titanium dioxide nanoparticles across two trophic levels, using algae and brine shrimp. They found that aminated and plain microplastics enhanced nano-TiO2 toxicity to algae, while carboxylated microplastics reduced it. Direct aqueous exposure caused greater toxicity in brine shrimp than dietary exposure, suggesting that the route of exposure significantly influences combined contaminant effects.
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.
Aggravated 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.
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.
The role of algal EPS in reducing the combined toxicity of BPA and polystyrene nanoparticles to the freshwater algae Scenedesmus obliquus
Researchers studied how polystyrene nanoplastics and the industrial chemical BPA affect freshwater algae when combined, and whether the algae's own protective secretions could reduce the damage. Carboxylated nanoplastics were the most toxic form, and the algae's natural exopolymeric substances helped buffer the combined toxicity. The findings suggest that biological interactions in real waterways may partially mitigate some harmful effects of nanoplastic pollution.
Nanoplastics enhance the toxic effects of titanium dioxide nanoparticle in freshwater algae Scenedesmus obliquus
Researchers investigated how fluorescent nanoplastics modify the toxic effects of titanium dioxide nanoparticles on the freshwater algae Scenedesmus obliquus. They found that when nanoplastics were combined with titanium dioxide, oxidative stress markers, lipid damage, and antioxidant enzyme activity all increased significantly beyond individual exposures. The study demonstrates that nanoplastics can enhance the toxicity of other environmental contaminants in freshwater organisms.
Eco-corona enhanced the interactive effects of nanoplastics and 6:2 chlorinated polyfluorinated ether sulfonate in zebrafish embryos
Researchers investigated how a natural coating called an eco-corona, formed from organic molecules in the environment, changes the way nanoplastics interact with a chemical pollutant in zebrafish embryos. They found that the eco-corona enhanced the combined toxic effects of nanoplastics and the co-occurring pollutant, leading to greater developmental harm. The study suggests that the real-world toxicity of nanoplastics may be worse than laboratory tests with clean particles indicate.
Beyond growth: comparative impact of plastics and natural particles on EPS dynamics and aggregation in Rhodomonas Salina
Researchers studied how microplastics (virgin and weathered PET plastic) and a natural mineral particle (kaolin) affect a microalgae-bacteria community, finding all particles inhibited algae growth by over 50% and triggered increased production of protective extracellular substances. Notably, weathered plastic and natural mineral particles caused similarly harmful responses, suggesting it is the physical properties of particles — not just their plastic chemistry — that drive ecological stress.
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.
Heteroaggregates of Polystyrene Nanospheres and Organic Matter: Preparation, Characterization and Evaluation of Their Toxicity to Algae in Environmentally Relevant Conditions
Polystyrene nanospheres combined with natural organic matter to form heteroaggregates were found to be more toxic to algae under realistic environmental conditions than pristine nanoplastics, highlighting how environmental transformation of nanoplastics can alter their ecological risk.
Hetero-Aggregation of Nanoplastics with Freshwater Algae and the Toxicological Consequences: The Role of Extracellular Polymeric Substances
Researchers studied how polystyrene and polylactic acid nanoplastics hetero-aggregate with the alga Chlorella vulgaris, finding that extracellular polymeric substances released by algae strongly influenced aggregation behavior and that aggregation altered the toxicity of nanoplastics.
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.
Particulate matter and nanoplastics: synergistic impact on Artemia salina
Combining nanoplastics with particulate matter (airborne or aquatic fine particles) produces worse outcomes for the brine shrimp Artemia salina than either pollutant alone, reducing survival and vitality. This synergistic toxicity is important because in real environments, nanoplastics rarely exist in isolation — they co-occur with other pollutants, making risk assessments based on single-contaminant studies likely to underestimate harm.
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.
Unraveling the toxicity mechanisms of nanoplastics with various surface modifications on Skeletonema costatum: Cellular and molecular perspectives
Researchers examined how nanoplastics with different surface coatings affect a common marine microalga at both the cellular and molecular level. They found that surface modifications significantly influenced the toxicity of the particles, with some coatings causing greater damage to cell membranes and photosynthesis. The study highlights that the chemical surface properties of nanoplastics, not just their size, play a key role in determining their environmental impact.
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.
Alleviating binary toxicity of polystyrene nanoplastics and atrazine to Chlorella vulgaris through humic acid interaction: Long-term toxicity using environmentally relevant concentrations
Researchers found that when nanoplastics and the herbicide atrazine were combined in water, they had a synergistic toxic effect on algae that was worse than either pollutant alone. However, adding humic acid, a natural substance found in soil and water, significantly reduced this combined toxicity by coating the nanoplastics and changing their surface properties. This suggests that natural organic matter in the environment may offer some protection against the harmful effects of nanoplastic-chemical mixtures.
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.
Polystyrene nanoplastics diminish the toxic effects of Nano-TiO2 in marine algae Chlorella sp.
Researchers found that polystyrene nanoplastics reduced the toxic effects of nano-titanium dioxide on marine algae by forming larger aggregates that decreased the bioavailability of both particle types. The combined exposure led to lower oxidative stress and reduced cellular damage compared to nano-titanium dioxide alone. The study demonstrates that interactions between different types of nanoparticles in marine environments can produce antagonistic effects that alter their individual toxicity profiles.
Extracellular polymers substances towards the toxicity effect of Microcystis flos-aquae under subjected to nanoplastic stress
Researchers studied how nanoplastics affect a common freshwater algae and found that the algae produce protective substances in response, but the plastic particles still significantly inhibited growth and disrupted photosynthesis. This matters because harmful algal blooms and water quality are affected by nanoplastic pollution, with downstream consequences for drinking water safety and aquatic food sources.