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61,005 resultsShowing papers similar to Impacts moléculaires des nanoplastiques combinés à l’arsenic, effets comparés entre des huîtres caribéennes (Isognomon alatus) et canadiennes (Crassostrea virginica) exposées par voie trophique.
ClearMolecular Impacts of Dietary Exposure to Nanoplastics Combined or Not with Arsenic in the Caribbean Mangrove Oysters (Isognomon alatus)
Researchers exposed Caribbean mangrove oysters (Isognomon alatus) to three nanoplastic types alone and combined with arsenic and used transcriptomics to measure molecular impacts, finding that nanoplastic-arsenic combinations produced additive or synergistic disruption of detoxification, immune, and metabolic pathways.
Molecular impacts of dietary exposure to nanoplastics combined with arsenic in Canadian oysters (Crassostrea virginica) and bioaccumulation comparison with Caribbean oysters (Isognomon alatus)
Researchers exposed Canadian oysters (Crassostrea virginica) to nanoplastics combined with arsenic and compared molecular responses and bioaccumulation with previously studied Caribbean oysters, finding species-specific differences in contaminant uptake and gene expression, suggesting that risk assessments must account for interspecies variability.
Évaluation de risques environnementaux de micro et macroplastiques en interaction avec des nanoparticules métalliques ou du cadmium sur les organismes aquatiques.
This doctoral thesis investigated the ecotoxicological effects of microplastics, biodegradable plastics, and metal nanoparticles on marine organisms including oysters, microalgae, and copepods in estuarine and coastal environments. It found synergistic interactions between these pollutants that increased toxicity beyond individual exposures.
Microplastics and arsenic speciation in edible bivalves from the coast of China: Distribution, bioavailability, and human health risk
This study examined both microplastic and arsenic contamination in oysters and mussels from the Chinese coastline, finding that the two pollutants coexist and interact. Oysters contained about 58 microplastic particles per gram, and the size of microplastics influenced which forms of arsenic were present. The findings highlight food safety concerns, since people who eat shellfish may be exposed to both microplastics and arsenic simultaneously.
Investigation of Toxicity of the Combined Exposure of Microplastics and Arsenic (III) on Clams
This study examined the combined toxicity of microplastics and arsenic(III) on freshwater clams, finding that co-exposure caused greater oxidative stress and tissue damage than either contaminant alone, suggesting synergistic interactions between microplastics and heavy metals.
Polystyrene microplastic alters the redox state and arsenic metabolization in the freshwater bivalve Limnoperna fortunei
Researchers exposed the freshwater mussel Limnoperna fortunei to polystyrene microplastics in combination with arsenic, finding that microplastics altered the bivalve's redox state and interfered with arsenic metabolization pathways. The results suggest microplastics can impair an organism's ability to convert toxic forms of arsenic to less toxic metabolites, worsening arsenic toxicity.
Impacts des nanoplastiques et microplastiques sur les premiers stades de vie (gamètes, embryons, larves) de l'huître creuse Crassostrea gigas
This French thesis investigated the toxicity of micro- and nanoplastics on early life stages of the Pacific oyster (Crassostrea gigas), from gametes through larvae. Nanoplastics (50 nm) were more toxic than microplastics due to their high surface area, causing dose-dependent effects on fertilization success and larval development in this key coastal species.
Toxic effects and metabolic response mechanisms of amino-modified polystyrene nanoplastics and arsenic on Microcystis aeruginosa
Researchers investigated the combined effects of amine-modified polystyrene nanoplastics and arsenic on a common freshwater cyanobacterium. They found that co-exposure intensified cellular stress, disrupted metabolic processes, and promoted the release of harmful toxins beyond what either pollutant caused individually. The findings reveal previously unrecognized risks to freshwater ecosystems when nanoplastics interact with heavy metal contaminants.
Bioaccumulation of microplastics and its in vivo interactions with trace metals in edible oysters
Scientists collected oysters from a Chinese coastal city and found microplastics in all samples, then investigated how microplastics interact with trace metals in vivo, finding that plastic particles and metals co-accumulated in tissues and that plastics may alter metal bioavailability.
Coexposure to microplastic and arsenic induces prooxidative situation in Laeonereis culveri (Annelida, Polychaeta)
Researchers exposed the marine polychaete Laeonereis culveri to microplastics alone, arsenic alone, or both combined and found that co-exposure produced an additive prooxidative effect — increasing reactive oxygen species and oxidative damage beyond either pollutant alone.
Integration of physiology, microbiota and metabolomics reveals toxic response of zebrafish gut to co-exposure to polystyrene nanoplastics and arsenic
Researchers exposed zebrafish to arsenic combined with polystyrene nanoplastics and found that the nanoplastics significantly increased arsenic accumulation in the gut, by up to 77% at the higher dose. The combined exposure caused more oxidative damage and greater disruption to gut bacteria and metabolism than arsenic alone. This study shows that nanoplastics can make other environmental pollutants more dangerous by helping them accumulate in the digestive system.
Toxicity effects of polystyrene nanoplastics and arsenite on Microcystis aeruginosa
Researchers studied how two types of polystyrene nanoplastics with different surface properties interact with arsenic to affect freshwater algae. They found that nanoplastics with a sulfonic acid surface modification caused more severe growth inhibition and metabolic disruption in the algae, while both types reduced arsenic uptake by the organisms. The study highlights that the specific surface chemistry of nanoplastics significantly influences their environmental toxicity.
The adsorption of arsenic on micro- and nano-plastics intensifies the toxic effect on submerged macrophytes
Researchers investigated how arsenic adsorbs onto microplastics of varying types and sizes, and how those particles affect underwater plants. They found that nanoplastics increased arsenic absorption in aquatic macrophytes by 36-47%, causing more severe leaf damage and oxidative stress than either contaminant alone.
Elucidating the consequences of the co-exposure of microplastics jointly to other pollutants in bivalves: A review
This review examines studies on the combined effects of microplastics and other pollutants in bivalves, finding that co-exposure often modifies individual toxicant effects and highlighting bivalves as important sentinel species for monitoring complex environmental contamination.
Origin, exposure routes and xenobiotics impart nanoplastics with toxic effects on freshwater bivalves
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.
An ecotoxicological approach towards the understanding of the impacts of micro- and nanoplastics in the marine environment
This PhD thesis investigated how micro- and nanoplastics affect marine microalgae and associated microbial consortia, examining how extracellular polymeric substances mediate plastic-biota interactions and how these effects cascade to higher trophic levels in marine food webs.
Toxicity assessment of environmental MPs and NPs and polystyrene NPs on the bivalve Corbicula fluminea using a multi-marker approach
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.
Nanoplastics and Arsenic Co-Exposures Exacerbate Oncogenic Biomarkers under an In Vitro Long-Term Exposure Scenario
Researchers examined the combined effects of polystyrene nanoplastics and arsenic on oncogenic biomarkers using an in vitro long-term exposure model. The study found that co-exposure to nanoplastics and arsenic exacerbated oncogenic biomarker responses compared to individual exposures. The findings suggest that nanoplastics may act as carriers for arsenic, potentially modulating its uptake and amplifying harmful effects in cellular systems.