We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Accumulation of polyethylene microplastics induces oxidative stress, microbiome dysbiosis and immunoregulation in crayfish
ClearMicroplastics in feed cause sublethal changes in the intestinal microbiota and a non-specific immune response indicator of the freshwater crayfish Procambarus clarkii (Decapoda: Cambaridae)
Researchers fed freshwater crayfish a diet containing recycled PET microplastics and examined the effects on gut bacteria and immune function. They found that microplastic exposure caused an imbalance in intestinal microbiota, increasing potentially harmful bacteria while decreasing beneficial species. The study also showed a weakened immune response, suggesting that microplastic contamination in aquatic food sources can compromise the health of the organisms that consume them.
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.
Toxic mechanisms of nanoplastics exposure at environmental concentrations on juvenile red swamp crayfish (Procambarus clarkii): From multiple perspectives
Researchers exposed juvenile red swamp crayfish to nanoplastics at concentrations found in the environment and observed stunted growth, oxidative stress, liver and gill damage, and changes in gene activity. Different concentrations triggered different toxic pathways, including immune disruption and metabolic problems. Since crayfish are a widely consumed freshwater species, these findings raise concerns about nanoplastic contamination in the food supply.
Effects of Polystyrene Microplastics on Hepatopancreas Histology, Intestinal Microbiota, and Metabolic Response in Cherax quadricarinatus
Researchers exposed redclaw crayfish to different concentrations of polystyrene microplastics and examined the effects on organ tissue, gut microbiota, and metabolism. At high concentrations, microplastics caused damage to hepatopancreatic tissues, shifted gut bacterial communities toward potentially harmful species, and disrupted amino acid metabolic pathways. The study suggests that microplastic pollution in freshwater environments can have cascading effects on the internal biology of aquatic crustaceans.
Oxidative stress and histopathological effects by microplastic beads, in the crayfish Procambarus clarkii, and fiddler crab Leptuca pugilator
Researchers exposed crayfish and fiddler crabs to polystyrene microplastic beads for one month and examined the effects on their hepatopancreas, a key digestive organ. Both species showed signs of oxidative stress and tissue damage, with microplastic particles accumulating in their organs. The study provides evidence that even at moderate concentrations, microplastic exposure can cause measurable physiological harm to freshwater and coastal crustaceans.
Physiological response of freshwater crayfish, Astacus leptodactylus exposed to polyethylene microplastics at different temperature
Freshwater crayfish exposed to polyethylene microplastics showed liver stress, disrupted blood chemistry, and weakened immune responses, with higher temperatures making the effects worse. The combination of microplastic exposure and warmer water caused greater damage to antioxidant defenses and enzyme activity than either stressor alone. As climate change raises water temperatures, aquatic organisms may become more vulnerable to microplastic toxicity, which could affect the safety of freshwater species consumed by humans.
Toxicity effects of microplastics individually and in combination with Aeromonas hydrophila on freshwater crayfish (Astacus leptodactylous)
Researchers investigated the combined effects of microplastics and the pathogenic bacterium Aeromonas hydrophila on freshwater crayfish over 30 days. The study found that co-exposure to microplastics and the pathogen caused more severe disruptions to blood biochemistry, liver oxidative balance, and immune function than either stressor alone, suggesting microplastics can amplify pathogen-related damage.
Effects of nanoplastic exposure on the immunity and metabolism of red crayfish (Cherax quadricarinatus) based on high-throughput sequencing
Researchers examined nanoplastic effects on red crayfish using transcriptomics and microbiome analysis, finding that high concentrations suppressed antioxidant and immune responses while significantly altering gut microbial communities.
Effects of microplastics on the innate immunity and intestinal microflora of juvenile Eriocheir sinensis
Researchers exposed juvenile Chinese mitten crabs to different concentrations of microplastics for up to 21 days and measured immune responses and gut microbiome changes. They found that microplastic exposure disrupted immune enzyme activities and altered the composition of intestinal bacteria, with effects intensifying at higher concentrations and longer exposure times. The study suggests that microplastic pollution may compromise the immune health and gut ecology of freshwater crustaceans.
Do Waterborne Nanoplastics Affect the Shore Crab Carcinus maenas? A Case Study with Poly(methyl)methacrylate Particles
Researchers exposed shore crabs (Carcinus maenas) to waterborne nanoplastics and assessed multiple physiological endpoints, finding that nanoplastic exposure altered immune function, oxidative stress markers, and gene expression in ways that indicate significant sublethal harm to this ecologically important species.
Single and combined effects of CuSO4 and polyethylene microplastics on biochemical endpoints and physiological impacts on the narrow-clawed crayfish Pontastacus leptodactylus
Researchers exposed freshwater crayfish to polyethylene microplastics and copper sulfate, both alone and together, for 28 days. The combination caused worse effects than either pollutant alone, including liver damage, immune suppression, and increased oxidative stress. This suggests microplastics can amplify the harmful effects of other environmental pollutants in aquatic food sources.
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.
Microplastic pollution in water, sediment, and specific tissues of crayfish (Procambarus clarkii) within two different breeding modes in Jianli, Hubei province, China
Microplastics were found in water (1.3–2.5 particles/L), sediment, and crayfish tissues (gills, stomach, gut, flesh) in both pond and rice-crayfish co-culture systems in China, with gill tissue showing the highest per-individual accumulation and flesh contamination persisting after purification in clean water.
Toxic 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.
Insight into the immune and microbial response of the white-leg shrimp Litopenaeus vannamei to microplastics
Researchers exposed white-leg shrimp (Litopenaeus vannamei) to different concentrations of microplastics for 48 hours and measured immune and microbial responses. The study found that high microplastic concentrations significantly reduced survival rates, altered immune-related gene expression, and disrupted the gut microbial community, suggesting that microplastic pollution may compromise shrimp immune function.
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.
Progress on the Effects of Microplastics on Aquatic Crustaceans: A Review
This review examined the effects of microplastics on aquatic crustaceans, finding that microplastics negatively affect life history, behavior, and physiological functions including oxidative stress, immune responses, and reproductive output across multiple species.
Comprehensive analysis of proteomic and biochemical responses of Daphnia magna to short-term exposure to polystyrene microplastic particles
Scientists exposed tiny freshwater crustaceans (Daphnia magna) to polystyrene microplastic particles for just 48 hours and found widespread disruptions at the molecular level. The organisms showed reduced energy metabolism, elevated signs of oxidative stress, and activated cellular uptake pathways, possibly as a defense mechanism. These findings indicate that even short-term microplastic exposure can trigger a complex stress response in a species that plays a key role in freshwater food webs.
Chronic exposure to polystyrene microplastics at environmentally relevant concentration induced growth retardation in Macrobrachium rosenbergii via multi-pathway toxicity: Oxidative stress, microbial dysbiosis, and biodistribution
Researchers exposed juvenile freshwater prawns to environmentally relevant concentrations of polystyrene microplastics for 42 days and found significant growth inhibition, with a 15.6% reduction in body length and 29.6% decrease in body weight. The microplastics accumulated in gills, stomachs, intestines, and hemolymph, causing persistent mitochondrial damage, oxidative stress, and gut microbiota imbalance that did not fully recover even after the exposure ended.
Oxidative effects of consuming microplastics in different tissues of white shrimp Litopenaeus vannamei
Researchers fed white shrimp diets containing polystyrene microplastics and found the particles accumulated in gills, muscles, and the hepatopancreas. The microplastics triggered oxidative stress, DNA damage, and lipid damage in multiple tissues, along with visible tissue abnormalities including edema and immune cell infiltration. The study demonstrates that dietary microplastic exposure can cause widespread oxidative harm across different organ systems in commercially important shellfish.
Effects of MP Polyethylene Microparticles on Microbiome and Inflammatory Response of Larval Zebrafish
Zebrafish larvae exposed to polyethylene microplastics for up to 10 days showed no broad metabolic disturbances or inflammatory changes, but oxidative stress markers increased at 15 days and the gut microbiome was disrupted, with higher levels of bacteria linked to intestinal disease. The findings suggest microplastics alter the microbial environment of fish guts without triggering obvious inflammation.
Polystyrene microplastics enhanced copper-induced acute immunotoxicity in red swamp crayfish (Procambarus clarkii)
Researchers found that polystyrene microplastics enhanced copper-induced immune toxicity in red swamp crayfish, with combined exposure causing greater gill accumulation, oxidative stress, and immune suppression than either pollutant alone.
Effects of exposure to waterborne polystyrene microspheres on lipid metabolism in the hepatopancreas of juvenile redclaw crayfish, Cherax quadricarinatus
Juvenile redclaw crayfish exposed to polystyrene microplastics via water showed accumulation in the hepatopancreas and dose-dependent disruption of lipid metabolism, including changes in fatty acid composition and lipid storage, suggesting potential effects on growth and survival.
Exposure to microplastics induces lower survival, oxidative stress, disordered microbiota and altered metabolism in the intestines of grass carp (Ctenopharyngodon idella)
Grass carp exposed to environmental concentrations of microplastics (32-40 micrometers, 100 and 1000 micrograms per liter) for 21 days showed reduced survival, elevated oxidative stress markers, disrupted gut microbiota, and altered intestinal metabolism. Microplastics were detected in intestinal tissue at both concentrations, indicating accumulation and systemic effects.