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61,005 resultsShowing papers similar to Nanoplastics Elicit Stage-Specific Physiological, Biochemical, and Gut Microbiome Responses in a Freshwater Mussel
ClearA Comparative Assessment of the Chronic Effects of Micro- and Nano-Plastics on the Physiology of the Mediterranean Mussel Mytilus galloprovincialis
Researchers compared the chronic effects of polystyrene microplastics and nanoplastics on Mediterranean mussels over a 21-day exposure at very low concentrations. They found that nanoplastics generally produced stronger biological responses than microplastics, including greater impacts on immune function, oxidative stress, and neurotoxicity markers. The study suggests that smaller plastic particles may pose greater risks to marine filter feeders even at trace environmental concentrations.
Effect of size continuum from nanoplastics to microplastics on marine mussel Mytilus edulis: Comparison in vitro/in vivo exposure scenarios
Researchers compared the effects of nanoplastics versus microplastics on marine mussels using both in vivo and in vitro approaches, finding that smaller plastic particles caused greater cellular and physiological impacts across the size continuum.
Toxicological and Biomarker Assessment of Freshwater Zebra Mussels (Dreissena polymorpha) Exposed to Nano-Polystyrene
Researchers exposed freshwater zebra mussels to nano-polystyrene particles at concentrations of 20 to 60 mg/L and measured mortality, feeding rates, and stress biomarker responses. They found that the nanoplastics caused measurable stress responses and affected the mussels' clearance rates at tested concentrations. The study adds to evidence that sub-micron plastic particles can have significant biological impacts on freshwater filter-feeding organisms.
Effects of exposure to nanoplastics on the gill of mussels Mytilus galloprovincialis: An integrated perspective from multiple biomarkers
Researchers exposed Mediterranean mussels to polystyrene nanoplastics for seven days and measured multiple gill biomarkers, finding that nanoplastics triggered oxidative stress, inhibited acetylcholinesterase, disrupted sodium-potassium ion transport, and impaired energy and lipid metabolism, pointing to broad physiological interference in marine invertebrates.
Polystyrene micro and nanoplastics: A comparative study of the cytotoxic effects exerted on Mytilus galloprovincialis gills
Researchers compared the toxic effects of micro-sized and nano-sized polystyrene particles on the gills of Mediterranean mussels. Both sizes caused oxidative damage, tissue alterations, and immune responses, but nanoplastics consistently produced more severe effects. The findings suggest that smaller plastic particles pose a greater threat to the gill function of filter-feeding shellfish, potentially impairing their ability to collect food and breathe.
Different effects of nano- and microplastics on oxidative status and gut microbiota in the marine medaka Oryzias melastigma
Researchers compared the effects of nanoplastics and microplastics on oxidative stress and gut microbiota in marine medaka fish. They found that nanoplastics caused more severe oxidative damage and greater disruption to the gut microbial community than larger microplastic particles. The study suggests that particle size plays a critical role in determining the biological impact of plastic pollution on aquatic organisms.
Microplastics, microfibres and nanoplastics cause variable sub-lethal responses in mussels (Mytilus spp.)
Researchers compared the toxic effects of microplastics, microfibres, and nanoplastics on mussels over 24-hour and 7-day exposures. They found that nanoplastics triggered a heightened immune response, while all plastic types caused initial oxidative stress that returned to normal levels after a week. The study highlights that particle size is a key factor in determining the type and severity of biological responses to plastic pollution in marine organisms.
Immunological responses, oxidative stress, and histopathological effects of nanoplastics on commercially relevant mussel species: A review
This review examines how nanoplastics affect commercially important mussel species, finding that these tiny particles can cross biological barriers and accumulate in tissues. Evidence indicates that nanoplastic exposure alters metabolic rates, triggers immune responses, causes oxidative stress and DNA damage, and changes the structure of gills, gonads, and gut tissue. The findings raise concerns about both mussel health and potential implications for seafood safety.
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.
Nanoplastic-Induced Genotoxicity and Intestinal Damage in Freshwater Benthic Clams (Corbicula fluminea): Comparison with Microplastics
Researchers compared the effects of nanoplastics and microplastics on freshwater clams and found that both caused intestinal damage and changes in gut bacteria, but through different biological mechanisms. Nanoplastics triggered cell death through mitochondrial pathways and caused more severe damage to intestinal mucus layers, while microplastics activated immune responses and increased harmful bacteria in the gut. The study suggests that plastic particle size plays a key role in determining the type and severity of biological harm.
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.
Oxidative Stress in Mussel Mytilus trossulus Induced by Different-Sized Plastics
Researchers exposed mussels to both tiny polystyrene microparticles and larger polyethylene plastic fragments and found that both sizes triggered oxidative stress in the animals. The plastic exposure caused DNA damage, weakened cellular membranes, and destabilized immune cell structures in the mussels' gills and digestive glands. The findings indicate that plastics of any size and polymer type can be harmful to marine filter-feeding organisms.
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.
Histopathological analysis of mussels Mytilus galloprovincialis after foodborne exposure to three sizes of polystyrene nanoplastics: Relevance of confounding factors.
Scientists fed tiny plastic particles (nanoplastics) to mussels through their food to see if it caused health problems, since mussels are good indicators of ocean health and people eat them. The plastic particles did cause some tissue damage and inflammation in the mussels, but other factors like reproductive cycles and parasites had bigger effects on their health. This suggests that short-term exposure to small amounts of nanoplastics may not be as harmful as previously thought, though longer studies are still needed to understand the risks to both marine life and humans who eat seafood.
Physiological effects of plastic particles on mussels are mediated by food presence
Thick shell mussels exposed to polystyrene nanoplastics (70 nm) and microplastics (10 µm) with and without microalgae food found that food presence mediated the physiological effects — microplastics reduced energy budget and increased oxidative stress markers most strongly when food was mixed with particles.
Cellular and tissue-level responses of mussels (Mytilus edulis) to aged polyethylene terephthalate (PET) micro- and nanoplastic particles
This study exposed mussels to environmentally realistic concentrations of aged PET micro- and nanoplastics and found measurable cellular damage even at the lowest doses tested. The plastic particles caused inflammation, oxidative stress, and tissue changes in the mussels' digestive systems. Since mussels are a common seafood and are often eaten whole, these findings are relevant to understanding human microplastic exposure through shellfish consumption.
Confounding factors affect hemocyte responses of mussels Mytilus galloprovincialis upon foodborne exposure to polystyrene nanoplastics of three sizes
Mussels (Mytilus galloprovincialis) were fed polystyrene nanoplastics at three sizes (50, 200, 1000 nm) and two doses for 7 days, revealing size- and dose-dependent effects on hemocyte immune function, with smaller particles causing greater cellular disruption.
Size-dependent effects of plastic particles on antioxidant and immune responses of the thick-shelled mussel Mytilus coruscus
Mussels exposed to plastic particles ranging from 70 nanometers to 100 micrometers showed that smaller particles caused more severe damage, including higher oxidative stress and greater immune system suppression. After 30 days of exposure, the mussels' immune cells had reduced ability to fight off threats through phagocytosis (the process of engulfing invaders). A seven-day recovery period reversed some effects, but the study highlights how chronic nanoplastic exposure may weaken marine organisms' defenses.
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.
Environmental and Sublethal Concentrations of Polystyrene Nanoplastics Induced Antioxidant System, Transcriptomic Responses, and Disturbed Gut Microbiota in Oyster Magallana Hongkongensis
Researchers exposed Hong Kong oysters to polystyrene nanoplastics at both environmentally realistic and higher concentrations. Even at the lower, real-world concentrations, the nanoplastics significantly altered the oysters' gut bacteria and gene expression patterns, while higher doses also triggered immune and antioxidant stress responses, raising concerns about food safety and ecosystem health.
Nanoplastic pollution changes the intestinal microbiome but not the morphology or behavior of a freshwater turtle
Researchers exposed freshwater turtle eggs and hatchlings to tiny polystyrene nanoplastics and found the particles changed the turtles' gut bacteria but did not affect their growth, shell development, or behavior. The nanoplastics were able to penetrate through the eggshell, reaching the developing embryo. While the turtles appeared physically healthy, the disrupted gut microbiome could have longer-term health consequences that were not captured in this study.
Unveiling the gut’s plastic predicament: How micro- and nano-plastics drive distinct toxicological pathways in Enchytraeus crypticus
Researchers exposed the soil invertebrate Enchytraeus crypticus to environmentally relevant concentrations of polystyrene microplastics (50 µm) and nanoplastics (100 nm), finding that nanoplastics caused greater gut microenvironment disruption and more severe biotoxicity than microplastics, acting through distinct mechanistic pathways.
Nanoplastics: From tissue accumulation to cell translocation into Mytilus galloprovincialis hemocytes. resilience of immune cells exposed to nanoplastics and nanoplastics plus Vibrio splendidus combination
Researchers studied how polystyrene nanoplastics of different sizes accumulate in and affect the immune cells of Mediterranean mussels. They found that the smallest nanoparticles quickly moved from the digestive system into the bloodstream and were taken up by immune cells, altering their function including motility and the ability to produce reactive oxygen species. However, the immune cells showed resilience by recovering their ability to fight bacterial infection after nanoplastic exposure.
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.