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20 resultsShowing papers similar to Change in energy-consuming strategy, nucleolar metabolism and physical defense in Macrobrachium rosenbergii after acute and chronic polystyrene nanoparticles exposure
ClearEffects of nanoplastics on energy metabolism in the oriental river prawn (Macrobrachium nipponense)
Oriental river prawns exposed to polystyrene nanoplastics (5–40 mg/L) for up to 28 days showed concentration- and time-dependent decreases in survival and energy metabolism, including disrupted glycogen and triglyceride content, reduced metabolic enzyme activity, and altered gene expression of energy pathways.
Effects of nanoplastics on antioxidant and immune enzyme activities and related gene expression in juvenile Macrobrachium nipponense
Researchers explored the effects of nanoplastics on survival, antioxidant activity, immune enzyme activity, and gene expression in juvenile oriental river prawns. The study found that increasing nanoplastic concentrations suppressed antioxidant and immune enzyme activities while altering related gene expression levels, indicating that nanoplastic exposure can compromise the defense systems of freshwater crustaceans.
Polystyrene nanoplastics decrease molting and induce oxidative stress in adult Macrobrachium nipponense
Researchers found that polystyrene nanoplastics significantly decreased molting frequency and induced oxidative stress in adult freshwater prawns, with effects on antioxidant enzyme activities observed at environmentally relevant concentrations.
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.
Time-dependent effects of polystyrene nanoparticles in brine shrimp Artemia franciscana at physiological, biochemical and molecular levels
Researchers tracked short- and long-term effects of cationic polystyrene nanoplastics on brine shrimp Artemia, finding that even low concentrations impair growth, trigger cumulative oxidative stress leading to lipid peroxidation, inhibit neural and developmental enzymes including cholinesterase and carboxylesterase, and alter gene expression governing molting and cell protection.
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.
Polystyrene nanoplastic exposure induces immobilization, reproduction, and stress defense in the freshwater cladoceran Daphnia pulex
Researchers documented how polystyrene nanoplastics accumulate in the guts of the freshwater crustacean Daphnia pulex and cause chronic toxicity at environmentally relevant concentrations, delaying reproduction, reducing offspring numbers, and inducing then suppressing antioxidant defense genes over a 21-day exposure.
Polystyrene nanoplastic induces oxidative stress, immune defense, and glycometabolism change in Daphnia pulex: Application of transcriptome profiling in risk assessment of nanoplastics
Researchers used transcriptome sequencing to examine how polystyrene nanoplastics affect gene expression in the water flea Daphnia pulex. After 96 hours of exposure, they identified 208 genes with altered expression levels, linked to oxidative stress, immune defense, and sugar metabolism pathways. The study provides molecular-level evidence that nanoplastic pollution can trigger multiple stress responses in freshwater organisms.
Two genes related to reproductive development in the juvenile prawn, Macrobrachium nipponense: Molecular characterization and transcriptional response to nanoplastic exposure
Nanoplastic exposure altered the expression of two genes involved in reproductive development in juvenile freshwater prawns (Macrobrachium nipponense), suggesting that nanoplastics may disrupt reproductive pathways in crustaceans at low concentrations.
Polystyrene nanoplastics decrease nutrient accumulation, disturb sex hormones, and inhibit reproductive development in juvenile Macrobrachium nipponense
Researchers exposed juvenile oriental river prawns to polystyrene nanoplastics at various concentrations for 28 days and observed significant disruptions to their reproductive development. The nanoplastics reduced nutrient accumulation, altered sex hormone levels, and interfered with genes involved in gonad development. The study suggests that nanoplastic pollution in waterways could impair the reproductive health of crustacean species.
Acute and chronic effects of polystyrene microplastics on brine shrimp: First evidence highlighting the molecular mechanism through transcriptome analysis
Researchers investigated both acute and chronic toxicity of polystyrene microplastics on brine shrimp, using transcriptome analysis to uncover molecular mechanisms. While acute exposure did not significantly affect survival, chronic exposure led to concentration-dependent bioaccumulation and increased reactive oxygen species generation, with gene expression analysis revealing disrupted metabolic and stress response pathways.
Ecotoxicological effects of polystyrene nanoplastics on common carp: Insights into blood parameters, DNA damage, and gene expression
Exposing common carp to polystyrene nanoplastics caused significant DNA damage in blood and brain cells, along with changes in genes related to immune function and stress response. Higher concentrations led to more severe effects, and the nanoplastics also disrupted liver antioxidant defenses. Since carp are widely consumed fish, these findings raise questions about the safety of fish from nanoplastic-contaminated waters for human consumption.
Polystyrene nanoplastics induce apoptosis, histopathological damage, and glutathione metabolism disorder in the intestine of juvenile East Asian river prawns (Macrobrachium nipponense)
Researchers exposed juvenile East Asian river prawns to different concentrations of polystyrene nanoplastics for 28 days. They found that nanoplastic exposure caused intestinal cell death, tissue damage, and disrupted the glutathione antioxidant system in a dose-dependent manner. The study suggests that nanoplastic pollution in freshwater environments could significantly compromise the intestinal health and immune defenses of crustaceans.
Effects of nanoplastic exposure on the growth performance and molecular characterization of growth-associated genes in juvenile Macrobrachium nipponense
Researchers found that polystyrene nanoplastic exposure impaired growth in juvenile shrimp by damaging the hepatopancreas, disrupting digestive enzyme activity, and altering growth-related gene expression at concentrations above 10 mg/L.
Two genes related to apoptosis in the hepatopancreas of juvenile prawn, Macrobrachium nipponense: Molecular characterization and transcriptional response to nanoplastic exposure
Researchers identified and characterized two apoptosis-related genes in juvenile prawns exposed to polystyrene nanoplastics, finding that nanoplastic exposure induced significant apoptotic responses in hepatopancreas tissue in a concentration-dependent manner.
Effects of Microplastics, Polystyrene, and Polyethylene on Antioxidants, Metabolic Enzymes, HSP-70, and Myostatin Expressions in the Giant River Prawn Macrobrachium rosenbergii: Impact on Survival and Growth
Researchers exposed juvenile giant river prawns (Macrobrachium rosenbergii) to polystyrene microspheres and polyethylene microparticles and found that both types reduced survival and growth while increasing oxidative stress markers and altering expression of heat shock proteins and myostatin, with polystyrene causing more severe effects.
Comparative analysis of acute and chronic toxicological exposure effects of polystyrene nanoparticles on Macrobrachium rosenbergii: Implications for antioxidative defense and immunosuppression
This comparative study examined acute high-dose versus chronic low-dose exposure effects of polystyrene nanoplastics on aquatic animals, finding that chronic low-dose exposure produced distinct and sometimes more concerning physiological changes than acute exposures, with implications for environmental risk assessment.
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.
Transcriptomic analysis following polystyrene nanoplastic stress in the Pacific white shrimp, Litopenaeus vannamei
Researchers used transcriptomic analysis to study how polystyrene nanoplastics affect gene expression in Pacific white shrimp. They found that nanoplastic exposure activated lysosome pathways and disrupted genes involved in immune response, protein processing, and metabolism. The study provides molecular-level evidence that nanoplastics can interfere with multiple biological systems in commercially important shrimp species.
Effects of Acute Exposure to Polystyrene Nanoplastics on the Channel Catfish Larvae: Insights From Energy Metabolism and Transcriptomic Analysis
Researchers found that acute exposure to polystyrene nanoplastics disrupted energy metabolism in channel catfish larvae, with transcriptomic analysis revealing altered gene expression in pathways related to oxidative stress and metabolic processes.