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61,005 resultsShowing papers similar to Toxic effects of microplastic (polyethylene) on accumulation, hematological parameters and antioxidant responses in mirror carp, Cyprinus carpio nudus according to different particle sizes
ClearToxic effects of microplastic (polyethylene) exposure: Bioaccumulation, hematological parameters and antioxidant responses in crucian carp, Carassius carassius
Researchers exposed crucian carp to polyethylene microplastics at various concentrations and found that the particles accumulated in tissues including gills, gut, and liver. The microplastics altered blood cell counts and disrupted the fish's antioxidant defense system in a dose-dependent manner. The study suggests that even common polyethylene microplastics can cause measurable biological harm in freshwater fish.
Investigation of the impact caused by different sizes of polyethylene plastics (nano, micro, and macro) in common carp juveniles, Cyprinus carpio L., using multi-biomarkers.
Common carp juveniles exposed to polyethylene plastics of three different sizes (nano, micro, and macro) all showed tissue damage, oxidative stress, and immune disruption, with nanoparticles causing the most severe effects. The size-dependent toxicity pattern suggests that as larger environmental plastics break down into smaller particles, their potential to harm fish — and ultimately people who eat them — may increase.
Toxic effects of sub-acute microplastic (polyamide) exposure on the accumulation, hematological, and antioxidant responses in crucian carp, Carassius carassius
Researchers exposed crucian carp to various concentrations of polyamide microplastics for two weeks and found that the particles accumulated in the fish tissues in a dose-dependent manner. Higher concentrations caused significant changes in blood parameters including reduced red blood cell counts and altered antioxidant enzyme activity, indicating both physical stress and oxidative damage. The study identifies specific blood and enzyme markers that could serve as early warning indicators of microplastic exposure in freshwater fish.
Differentiation in the expression of toxic effects of polyethylene-microplastics on two freshwater fish species: Size matters
Researchers exposed zebrafish and perch to two sizes of polyethylene microplastics for 21 days and found that smaller particles were more toxic, accumulating primarily in the liver while larger ones concentrated in the gills. Both sizes triggered oxidative stress, DNA damage, and activated cell death pathways in both species. The study demonstrates that microplastic particle size is a key factor in determining where the particles end up in fish tissues and how severely they cause harm.
Neurotoxic effects of different sizes of plastics (nano, micro, and macro) on juvenile common carp (Cyprinus carpio)
Researchers assessed the neurotoxic effects of polyethylene plastics at nano, micro, and macro sizes on juvenile common carp brains. The study found that all plastic sizes reduced brain enzyme activity by 30-40%, with smaller particles causing more pronounced effects, and histological examination revealed structural changes in brain tissue, suggesting that size plays a significant role in plastic neurotoxicity.
Size-dependent effects of microplastic on uptake, immune system, related gene expression and histopathology of goldfish (Carassius auratus)
Researchers exposed goldfish to two sizes of polystyrene microplastics at environmentally relevant concentrations for 28 days. The study found that microplastics accumulated in gill, liver, and intestine tissues, causing damage that worsened with smaller particle size and higher doses. The results indicate that microplastics trigger oxidative stress and immune responses in fish, with smaller particles posing greater health risks.
Toxic effects of microplastic (Polyethylene) on fish: Accumulation, hematological parameters and antioxidant responses in Korean Bullhead, Pseudobagrus fulvidraco
Korean bullhead fish exposed to polyethylene microplastics for just 96 hours showed significant toxic effects including microplastic buildup in the gut, gills, and liver. The fish developed blood abnormalities, liver stress, and disrupted antioxidant defenses, with effects worsening at higher concentrations. Since this species is a common freshwater fish, these findings raise concerns about microplastics affecting the health and safety of fish that people eat.
Comparative toxicity of virgin and biodegraded LLDPE microplastics on growth, behavior, antioxidant, and hematological health of Catla catla fish
Researchers compared the toxicity of virgin versus bacterially degraded polyethylene microplastics on freshwater fish, finding that both types caused abnormal behaviors and disrupted blood parameters in a dose-dependent manner. However, biodegraded microplastics produced less severe effects on growth, survival, and antioxidant enzyme activity, suggesting that microbial degradation may reduce the ecological risk posed by microplastic pollution.
Neurotoxic effects of different sizes of plastics (Nano, Micro, and Macro) on juvenile common carp (Cyprinus carpio)
Researchers found that polyethylene plastics across three size classes (nano, micro, and macro) impair neurological function in juvenile common carp (Cyprinus carpio), with all size classes reducing acetylcholinesterase and monoamine oxidase activity and altering nitric oxide levels in brain tissue, indicating size-dependent neurotoxic effects.
Toxicological effects of nano- and micro-polystyrene plastics on red tilapia: Are larger plastic particles more harmless?
Researchers exposed red tilapia to three sizes of polystyrene particles (0.3, 5, and 70-90 micrometers) to compare their toxic effects. The study found that the largest particles showed the highest accumulation in tissues, but all sizes induced oxidative stress, disrupted cytochrome P450 enzymes, caused neurotoxicity, and altered metabolic profiles, indicating that even smaller nanoplastics can cause significant harm to fish.
Microplastics induce toxic effects in fish: Bioaccumulation, hematological parameters and antioxidant responses
Researchers exposed juvenile fish to polyamide microplastics and found the particles accumulated primarily in the intestine, gills, and liver, causing reduced blood oxygen-carrying capacity, liver stress, and disrupted antioxidant defenses. These findings matter because fish are an important food source for humans, and microplastic accumulation in fish tissues could transfer these contaminants to people through their diet.
Effects of polystyrene nano- and microplastics and of microplastics with sorbed polycyclic aromatic hydrocarbons in adult zebrafish
Researchers exposed adult zebrafish to nano- and microplastic particles of different sizes, some carrying additional chemical pollutants, over a 21-day period. The study found that nanoplastics and microplastics triggered different stress responses in the fish, with nanoplastics altering antioxidant gene activity and microplastics causing liver changes. The findings suggest that particle size matters when it comes to the biological effects of plastic pollution in aquatic organisms.
Neurotoxic effects of different sizes of plastics (Nano, Micro, and Macro) on juvenile common carp (Cyprinus carpio)
Researchers found that polyethylene plastic particles of nano, micro, and macro sizes all reduced acetylcholinesterase, monoamine oxidase, and nitric oxide levels by 30-40% in the brains of juvenile common carp after 15-day exposures, with nanoplastics causing the greatest damage including brain tissue necrosis, edema, and retinal degeneration.
Toxic effects of polyethylene microplastics on transcriptional changes, biochemical response, and oxidative stress in common carp (Cyprinus carpio)
Researchers exposed common carp to varying concentrations of polyethylene microplastics and assessed biochemical, oxidative, and gene expression changes. The study found that microplastic exposure caused significant oxidative stress, altered liver enzyme activity, and modified the expression of stress-related genes in a dose-dependent manner.
Integrated Biomarker, Histopathological and Genotoxicity‐Based Toxicological Evaluation of Polystyrene and Polyethylene Microplastics in Oreochromis mossambicus
Researchers exposed Mozambique tilapia to polystyrene and polyethylene microplastics and found dose-dependent accumulation in gill, gut, and liver tissues. Polyethylene proved significantly more toxic, causing greater oxidative stress, metabolic disruption, and chromosomal damage as measured by micronucleus assays. The study provides evidence that different polymer types can have markedly different toxicological impacts on freshwater fish.
Ecotoxicological Effects of Polystyrene Particle Mix (20, 200, and 430 µm) on Cyprinus carpio
Researchers exposed common carp to polystyrene microplastics of three different sizes in both short-term and long-term experiments, following standardized testing methods. While no deaths or acute effects occurred after 96 hours, the 75-day chronic exposure revealed changes in physiological markers and tissue-level effects. The study suggests that the real concern with microplastic exposure in fish lies in subtle, long-term biological changes rather than immediate toxic effects.
Effects of polystyrene microspheres on the swimming behavior and metabolism of grass carp (Ctenopharyngodon idella)
Researchers exposed juvenile grass carp to polystyrene microspheres of different sizes and measured effects on swimming ability, metabolism, and oxidative stress. They found that smaller particles caused more severe impairment to swimming performance and triggered greater metabolic disruption over time. The study suggests that the size of microplastic particles matters significantly when assessing their potential harm to freshwater fish.
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.
Potential toxic effects of polylactic acid microplastics accumulation on multiple tissue structures and hematology in carp
Researchers exposed common carp to polylactic acid microplastics over an extended period and assessed effects on multiple tissue types and blood parameters. PLA-MP accumulation caused histological damage in gills, liver, and intestine, and altered hematological markers, demonstrating that biodegradable plastics are not toxicologically inert to fish.
Size effect of polystyrene microplastics on the accumulation of anthracene for Java medaka (Oryzias javanicus)
Researchers demonstrated that smaller polystyrene microplastics enhanced the bioaccumulation of the pollutant anthracene in Java medaka fish more than larger particles, quantifying the size-dependent role of microplastics as vectors for organic contaminants.
Subacute toxic effects of polyvinyl chloride microplastics (PVC-MPs) in juvenile common carp, Cyprinus carpio (Pisces: Cyprinidae)
Juvenile common carp exposed to polyvinyl chloride microplastics showed dose-dependent toxic effects including tissue damage, oxidative stress, and altered biochemical markers over a subacute exposure period. The results indicate that PVC microplastics are harmful to freshwater fish at ecologically relevant concentrations.
Effects of PS-MPs on growth, immunity, antioxidant capacity and amino acid metabolism in common carp ( Cyprinus carpio )
Researchers exposed common carp (Cyprinus carpio) to polystyrene microplastics at 0, 50, 100, and 200 micrograms per liter for 15 days, finding that higher concentrations significantly reduced weight gain rates and hepatopancreas somatic indices while impairing immunity, antioxidant capacity, and amino acid metabolism. The results demonstrate dose-dependent toxic effects of PS-MPs on fish physiology at environmentally relevant concentrations.
Differential biochemical responses of Cyprinus carpio after dietary and waterborne exposure to microplastics from polyethylene-based biodegradable and conventional bags
Researchers compared the toxic effects of microplastics from biodegradable and conventional polyethylene bags on common carp through both dietary and waterborne exposure. They found that the toxicity ranking differed depending on the exposure route, and that biodegradable plastic microplastics showed significant differences from conventional plastics, particularly in liver nitric oxide levels. The study emphasizes that both the chemical composition of microplastics and how organisms encounter them influence the resulting biological harm.
Size Effects of Microplastics on Embryos and Observation of Toxicity Kinetics in Larvae of Grass Carp (Ctenopharyngodon idella)
Researchers examined size-dependent effects of microplastics on grass carp embryos and larvae, finding that nanoscale particles (80 nm) caused more severe developmental toxicity than microscale particles (8 micrometers) at the same concentrations.