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61,005 resultsShowing papers similar to Environmental and Sublethal Concentrations of Polystyrene Nanoplastics Induced Antioxidant System, Transcriptomic Responses, and Disturbed Gut Microbiota in Oyster Magallana Hongkongensis
ClearThe underestimated toxic effects of nanoplastics coming from marine sources: A demonstration on oysters (Isognomon alatus)
Researchers found that nanoplastics derived from real marine debris triggered more significant gene-level toxic responses in Caribbean oysters than commonly used laboratory polystyrene nanoplastics, suggesting standard lab particles may underestimate actual environmental toxicity.
Metabolic profiles and protein expression responses of Pacific oyster (Crassostrea gigas) to polystyrene microplastic stress
Researchers exposed Pacific oysters to polystyrene microplastics for 21 days and found the particles caused oxidative stress and disrupted the oysters' metabolism, particularly amino acid processing. Different microplastic concentrations triggered different metabolic changes in the oysters. Since oysters are a popular seafood, these findings raise questions about food safety and whether microplastic-stressed shellfish could affect consumer health.
Adaptive response of triploid Fujian oyster (Crassostrea angulata) to nanoplastic stress: Insights from physiological, metabolomic, and microbial community analyses
Researchers exposed triploid Fujian oysters to nanoplastics for 14 days and studied their physiological, metabolic, and microbial responses. They found that the oysters showed strong adaptive capacity, adjusting their metabolism and gut microbial communities to cope with nanoplastic stress. The study provides important insights into how shellfish respond to increasing nanoplastic pollution in ocean environments.
Toxicological effects of polystyrene nanoplastics on marine organisms
Researchers exposed Pacific white shrimp to polystyrene nanoplastics at various concentrations and measured immune, antioxidant, and tissue responses after seven days. They found that nanoplastic exposure disrupted immune function, increased oxidative stress, and caused tissue damage, particularly in the hepatopancreas and gills. The study adds to growing evidence that nanoplastics can harm the health of commercially important marine species.
Polystyrene microplastics induce molecular toxicity in Simocephalus vetulus: A transcriptome and intestinal microorganism analysis
Researchers exposed a freshwater crustacean to polystyrene nanoplastics and found widespread molecular-level damage, including oxidative stress, disrupted energy metabolism, and signs of neurotoxicity. The nanoplastics also significantly altered the animals' gut microbiome, increasing harmful bacteria and weakening intestinal barrier function. The study provides a detailed picture of how plastic pollution can affect freshwater organisms at the cellular and genetic level.
Determination of bioaccumulation of polystyrene nanoplastics in mussel Mytilus galloprovincialis and their impact on enzymatic and nonenzymatic antioxidative stress mechanisms
Researchers assessed the bioaccumulation of polystyrene nanoplastics in the mussel Mytilus galloprovincialis and measured enzymatic and non-enzymatic antioxidant stress responses after 4 days of exposure to 1 mg/L of 54 nm particles. Nanoplastics accumulated in mussel tissues and triggered significant oxidative stress responses, including altered superoxide dismutase and catalase activity, indicating toxicological effects at environmentally relevant concentrations.
Polystyrene nanoplastics in the marine mussel Mytilus galloprovincialis.
This study investigated how polystyrene nanoplastics affect Mediterranean mussels, an important marine species and human food source. Researchers found that these tiny plastic particles can cross cell membranes, accumulate in tissues, and trigger oxidative stress and immune responses. The findings suggest that nanoplastic pollution in the ocean could affect both marine ecosystem health and the safety of seafood consumed by people.
Effects of dietary nanoplastics exposure on muscle quality, immunity, antioxidative capacity and digestive gland function of abalone (Haliotis discus hannai)
Researchers fed abalone different concentrations of polystyrene nanoplastics for 21 days and observed dose-dependent harm across multiple organ systems. The nanoplastics impaired antioxidant defenses, suppressed immune function, degraded muscle texture, and caused fat accumulation and inflammation in the digestive gland. The study suggests that dietary nanoplastic exposure poses significant risks to the health and quality of commercially important shellfish species.
Early molecular responses of mangrove oysters to nanoplastics using a microfluidic device to mimic environmental exposure
Researchers used a microfluidic chip mimicking estuarine water conditions to expose mangrove oysters to nanoplastics from polystyrene and beach-collected sources, finding that low concentrations of beach-derived nanoplastics triggered the strongest gene expression responses. Genes involved in endocytosis, oxidative stress, and DNA repair were activated, demonstrating the utility of microfluidic devices for nanoplastic ecotoxicology.
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.
Microplastics induce dose-specific transcriptomic disruptions in energy metabolism and immunity of the pearl oyster Pinctada margaritifera
Pearl oysters (Pinctada margaritifera) exposed to three doses of polystyrene microbeads showed dose-dependent reductions in energy balance, and transcriptomic analysis revealed disruptions to pathways controlling immunity and energy metabolism that scaled with exposure concentration.
The effect of a polystyrene nanoplastic on the intestinal microbes and oxidative stress defense of the freshwater crayfish, Procambarus clarkii
Researchers tested the acute effects of polystyrene nanoplastics on freshwater crayfish and found that exposure altered the composition of intestinal bacteria and disrupted oxidative stress defenses. Higher concentrations of nanoplastics led to more severe changes in gut microbial diversity and antioxidant enzyme activity. The study adds to growing evidence that nanoplastic pollution can harm the gut health and immune defenses of freshwater organisms.
Effects of medium-term exposure to a high concentration of polystyrene nanoplastics in Chilean mussels (Mytilus chilensis)
Researchers exposed Chilean mussels to high concentrations of polystyrene nanoplastics for 28 days and observed an initial antioxidant and immune response in gills that declined over time, with histological changes including hemocytic infiltration and epithelial damage in gills, the primary site of nanoplastic accumulation.
Chronic toxicity of polystyrene nanoparticles in the marine mussel Mytilus galloprovincialis
Researchers exposed Mediterranean mussels to polystyrene nanoplastics (50 nm, 10 µg/L) for 21 days and found genotoxicity in blood cells and overwhelmed antioxidant defenses in gills and digestive glands, with gills showing the most severe tissue-level oxidative damage over time.
Impact of nanoplastics on hemolymph immune parameters and microbiota composition in Mytilus galloprovincialis
Mytilus galloprovincialis mussels exposed to amino-modified polystyrene nanoplastics for 96 hours showed disrupted hemolymph immune parameters and significant shifts in microbiota composition, suggesting nanoplastics alter both immune function and the microbial communities mussels rely on.
Gradual effects of gradient concentrations of polystyrene nanoplastics on metabolic processes of the razor clams
Researchers exposed razor clams to a gradient of polystyrene nanoplastic concentrations and used metabolomics to track effects, finding that even low concentrations disrupted energy metabolism and amino acid pathways, with effects becoming more severe as concentration increased.
Acute exposure to polystyrene nanoplastics induced oxidative stress in Sepia esculenta Larvae
Researchers exposed cuttlefish larvae (Sepia esculenta) to polystyrene nanoplastics and found significant oxidative stress — a type of cellular damage caused by unstable molecules called free radicals — along with changes in the expression of genes involved in stress response pathways. This study extends understanding of nanoplastic harm beyond commonly studied species to economically important marine cephalopods.
Orally administered nano-polystyrene caused vitellogenin alteration and oxidative stress in the red swamp crayfish (Procambarus clarkii)
Researchers orally dosed red swamp crayfish with 100 nm carboxylated polystyrene nanoparticles and found mild but measurable stress responses including altered gene expression in immune function, oxidative stress pathways, lipid metabolism, and reproduction, suggesting nanoplastics can perturb molecular systems even at low concentrations without breaching physiological thresholds.
Impact of a chronic waterborne exposure to polystyrene nanoplastics on the gilthead seabream (Sparus aurata): Combining traditional and multi-omics approaches
Researchers exposed gilthead seabream to environmentally relevant and elevated polystyrene nanoplastic concentrations for 28 days, finding no visible tissue damage or blood abnormalities but significant shifts in gut microbiome diversity and dose-dependent changes in plasma metabolites linked to energy metabolism, suggesting subtle long-term risks for aquaculture production.
Toxicity of environmental and polystyrene plastic particles on the bivalve Corbicula fluminea: focus on the molecular responses
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.
The effects of a polystyrene nanoplastic on the immune response and gut microbiota of Eriocheir sinensis and its post-recovery state
Researchers exposed Chinese mitten crabs to polystyrene nanoplastics and found that 48-hour exposure suppressed immune enzyme activity, elevated pathogen abundance in the gut microbiome, and damaged the hepatopancreas — with tissue damage persisting after 7 days of recovery even as gut nanoplastics were cleared.
Cytotoxicity of polystyrene nanoplastics involves mitochondrial dysfunction and DNA damage in hemocytes of the Pacific oyster
Researchers used an in vitro cellular bioassay with Pacific oyster hemocytes to investigate the toxicity of polystyrene nanoplastics, finding that 24-hour exposure caused mitochondrial dysfunction, elevated reactive oxygen species, and DNA damage. The results identify immune cell mitochondria as key targets of nanoplastic cytotoxicity in marine bivalves.
Adverse effects of polystyrene nanoplastics on sea cucumber Apostichopus japonicus and their association with gut microbiota dysbiosis
Researchers used multiple advanced techniques to study how polystyrene nanoplastics affect sea cucumbers, an important aquaculture species. They found that nanoplastic exposure disrupted the animals' gut microbiome, triggered inflammation, and impaired immune function. The study suggests that nanoplastic pollution in aquaculture environments could harm the health of commercially farmed marine species.
Polystyrene nanoplastics and pathogen plasticity: Toxic threat or tolerated stressor in Salmonella enterica?
Researchers examined how polystyrene nanoplastics affect Salmonella enterica, a major foodborne pathogen, across a range of concentrations. They found that nanoplastics induced oxidative stress, membrane damage, and increased biofilm formation, while also triggering early activation of virulence and stress-response genes. The study suggests that nanoplastic pollution in the environment could alter bacterial survival strategies and potentially influence food safety risks.