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61,005 resultsShowing papers similar to Polystyrene nano/microplastics induce microbiota dysbiosis, oxidative damage, and innate immune disruption in zebrafish
ClearPolystyrene microplastics induce microbiota dysbiosis and inflammation in the gut of adult zebrafish
Researchers exposed adult zebrafish to polystyrene microplastics of two different sizes for 14 days and found significant disruptions to the gut microbiome, including shifts in key bacterial populations. Smaller microplastic particles also triggered inflammatory responses in the gut, with elevated levels of inflammatory markers at both the gene and protein level. The study suggests that microplastic ingestion can disturb gut bacteria balance and cause intestinal inflammation in aquatic organisms.
Microplastics induce intestinal inflammation, oxidative stress, and disorders of metabolome and microbiome in zebrafish
Researchers exposed zebrafish to polystyrene microplastics for 21 days and found significant intestinal inflammation, oxidative stress, and disruption of both the gut microbiome and metabolic processes. The microplastics altered the balance of beneficial and harmful gut bacteria and changed the levels of key metabolites involved in energy and amino acid metabolism. The study provides detailed evidence that microplastic ingestion can cause widespread disruption to gut health in aquatic organisms.
The toxicity of polystyrene micro- and nano-plastics on rare minnow (Gobiocypris rarus) varies with the particle size and concentration
Scientists exposed rare minnow fish to polystyrene microplastics and nanoplastics at different sizes and concentrations and found that both caused growth inhibition, tissue damage, and disrupted gut bacteria. Interestingly, larger microplastics at high concentrations were the most disruptive to gut microbiome communities, while nanoplastics caused more oxidative stress. The study shows that the health effects of plastic particles depend on both their size and amount, and that gut health is a key target of microplastic toxicity.
Effects of polystyrene nanoplastics on oxidative stress, histopathology and intestinal microbiota in largemouth bass (Micropterus salmoides)
Researchers exposed largemouth bass — a commercially important freshwater fish — to polystyrene nanoplastics (tiny plastic particles 100 nanometers in size) for up to 19 days, finding tissue damage in the gills, liver, and intestines along with elevated markers of cellular stress. While growth was not significantly affected, the fish adjusted their gut microbiome in response, suggesting nanoplastics trigger adaptive but potentially harmful physiological changes.
Micro-and nano-plastics induce kidney damage and suppression of innate immune function in zebrafish (Danio rerio) larvae
Zebrafish larvae exposed to polystyrene micro- and nanoplastics developed kidney damage and weakened immune defenses, making them much more vulnerable to bacterial infection. Both particle sizes suppressed key immune pathways, but nanoplastics primarily caused stress in cells' protein-processing systems while microplastics triggered fat buildup in the kidneys -- showing how different-sized plastic particles can harm health through distinct mechanisms.
Adverse effects of polystyrene microplastics in the freshwater commercial fish, grass carp (Ctenopharyngodon idella): Emphasis on physiological response and intestinal microbiome
Researchers exposed grass carp to different sizes and concentrations of polystyrene microplastics for up to 14 days, followed by a depuration period, and assessed physiological and intestinal microbiome effects. The study found that microplastics caused histological damage, oxidative stress, and shifts in gut microbial communities, with smaller particles and higher concentrations producing more severe effects.
Size-dependent adverse effects of microplastics on intestinal microbiota and metabolic homeostasis in the marine medaka (Oryzias melastigma)
Researchers exposed marine medaka fish to different sizes of polystyrene microplastics for 60 days and found that particle size was a key factor in determining health effects. Larger particles (200 micrometers) caused weight gain and fat accumulation, while smaller particles (2 and 10 micrometers) led to liver inflammation and damage. The study also revealed that microplastics disrupted the balance of gut bacteria, particularly with larger particle exposure.
Polystyrene microparticles can affect the health status of freshwater fish – Threat of oral microplastics intake
Researchers fed juvenile rainbow trout polystyrene microplastics at three dietary concentrations for six weeks and assessed multiple health parameters. They found that the highest concentration triggered immune responses, liver and gill damage, disrupted antioxidant balance, and reduced plasma proteins. The study demonstrates that oral microplastic intake can negatively affect the health of freshwater fish across multiple organ systems.
Concurrent impacts of polystyrene nanoplastic exposure and Aeromonas hydrophila infection on oxidative stress, immune response and intestinal microbiota of grass carp (Ctenopharyngodon idella)
Researchers studied the combined effects of polystyrene nanoplastics and a bacterial infection on grass carp, a common freshwater fish. They found that nanoplastic exposure worsened the impact of the infection by increasing oxidative stress, suppressing immune responses, and disrupting the gut microbiome. The study suggests that nanoplastic pollution in waterways could make fish more vulnerable to disease by weakening their natural defenses.
Effects of polystyrene microplastics on the composition of the microbiome and metabolism in larval zebrafish
Researchers exposed larval zebrafish to two sizes of polystyrene microplastics and found significant changes in gut microbiome composition and metabolic activity. The microplastics altered the abundance and diversity of gut bacteria and disrupted metabolic pathways important for development. The study suggests that early-life exposure to microplastics could have meaningful biological consequences by reshaping the gut environment of developing organisms.
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.
Interactions between intestinal microbiota and metabolites in zebrafish larvae exposed to polystyrene nanoplastics: Implications for intestinal health and glycolipid metabolism
Zebrafish larvae exposed to polystyrene nanoplastics suffered intestinal damage, including inflammation, oxidative stress, and disrupted gut bacteria -- with increases in bacteria linked to gut disease. The nanoplastics also altered metabolism related to sugar and fat processing, suggesting that ingesting these tiny particles could harm digestive health and disrupt how the body processes nutrients.
Effect of polystyrene nanoplastics on the intestinal histopathology, oxidative stress, and microbiota of Acrossocheilus yunnanensis
Researchers studied the effects of polystyrene nanoplastics on the intestinal health of a freshwater fish species and found significant damage to the gut lining, including ruptured tissue and damaged nutrient-absorbing structures. The nanoplastics also increased oxidative stress markers and shifted the composition of gut bacteria, reducing beneficial species. The findings suggest that nanoplastic exposure can compromise both the physical barrier and microbial balance of fish intestines.
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.
Impacts of polystyrene nanoplastics on zebrafish gut microbiota and mechanistic insights
Zebrafish exposed to polystyrene nanoplastics showed significant changes in their gut bacteria, with beneficial species like Bifidobacterium declining and potentially harmful bacteria increasing. The nanoplastics physically entered intestinal tissues, causing visible damage to gut cells. This study is relevant to human health because our gut microbiome plays a key role in immunity and digestion, and similar disruption from nanoplastic exposure could contribute to digestive and immune problems.
Polystyrene microplastics induce endoplasmic reticulum stress, apoptosis and inflammation by disrupting the gut microbiota in carp intestines
Researchers fed carp polystyrene microplastics and found that the particles disrupted their gut bacteria, killing off beneficial species and promoting those linked to diseases. The microplastics triggered a stress response in intestinal cells that led to inflammation, cell death, and tissue damage. Since carp is a widely eaten fish, these gut health effects raise questions about how microplastics in aquatic environments could affect the safety of fish that humans consume.
Distinct Effects between Polystyrene Micro- and Nanoplastics: Exacerbation of Adverse Outcomes in Inflammatory Bowel Disease-like Zebrafish and Mice
This study compared the effects of micro-sized versus nano-sized polystyrene plastics in zebrafish and mice with inflammatory bowel disease. Nanoplastics caused significantly worse gut inflammation, barrier damage, and immune disruption than larger microplastics in both species. The findings suggest that people with existing digestive conditions like IBD may be especially vulnerable to nanoplastic exposure from food and water.
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.
Study of the effects of nanoplastics ingestion in a freshwater fish ( Danio rerio )
Researchers exposed zebrafish to polystyrene nanoplastics and found evidence of intestinal damage, oxidative stress, and behavioral changes. The study adds to growing evidence that nanoplastics in freshwater environments can harm fish health, with potential implications for the health of ecosystems and fish-eating humans.
Polystyrene nanoplastics cause developmental abnormalities, oxidative damage and immune toxicity in early zebrafish development
Zebrafish embryos exposed to polystyrene nanoplastics showed dose-dependent developmental problems including delayed hatching, reduced survival, smaller body size, and the nanoplastics accumulated in critical organs like the eyes, heart, liver, and brain. The particles triggered oxidative stress that damaged cells and activated inflammatory immune responses, demonstrating how nanoplastic contamination in water can cause widespread harm to developing organisms.
Plastic nanoparticles cause mild inflammation, disrupt metabolic pathways, change the gut microbiota and affect reproduction in zebrafish: A full generation multi-omics study.
Exposure of zebrafish to polystyrene nanoparticles throughout their entire first generation caused mild inflammation, disrupted metabolic pathways, altered gut microbiota, and impaired reproduction — even at environmentally relevant concentrations. This comprehensive multigenerational study demonstrates that nanoplastic exposure can have lasting biological effects across multiple body systems in fish.
Immunotoxicity responses to polystyrene nanoplastics and their related mechanisms in the liver of zebrafish (Danio rerio) larvae
Researchers studied how polystyrene nanoplastics affect the immune system of zebrafish larvae by examining inflammatory responses in the liver. They found that smaller nanoparticles caused more severe immune reactions, including increased neutrophil and macrophage activity and activation of inflammatory signaling pathways. The study provides evidence that nanoplastics can trigger significant immune system disruption in fish even at early life stages.
Polystyrene microplastics alter the intestinal microbiota function and the hepatic metabolism status in marine medaka (Oryzias melastigma)
Researchers fed marine medaka fish polystyrene microplastics of two sizes for 28 days and examined effects on gut microbiota and liver metabolism. They found that microplastic exposure significantly altered the functional composition of gut bacteria and disrupted hepatic metabolic pathways, even without causing visible tissue damage. The study suggests that microplastics can affect fish health through subtle microbiome and metabolic changes that precede obvious physical harm.
Joint effects of micro-sized polystyrene and chlorpyrifos on zebrafish based on multiple endpoints and gut microbial effects
Researchers found that micro-sized polystyrene particles accumulated in zebrafish gut and liver, causing oxidative stress and gut microbiome disruption, and that co-exposure with chlorpyrifos pesticide amplified toxic effects at the individual level.