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61,005 resultsShowing papers similar to Molecular effects of polystyrene nanoplastics toxicity in zebrafish embryos (Danio rerio)
ClearPolystyrene Nanoplastic Exposure Induces Developmental Toxicity by Activating the Oxidative Stress Response and Base Excision Repair Pathway in Zebrafish (Danio rerio)
Researchers exposed zebrafish embryos to polystyrene nanoplastics at various concentrations and found significant developmental abnormalities including reduced hatching rates and increased malformations. The nanoplastics activated oxidative stress responses and DNA repair pathways, indicating cellular damage during critical early development stages. The study provides mechanistic evidence for how nanoplastic exposure can disrupt normal embryonic development in aquatic organisms.
Exposure to polystyrene microplastics induced gene modulated biological responses in zebrafish (Danio rerio)
Researchers exposed zebrafish to polystyrene microplastics and analyzed changes in gene expression related to immune response, oxidative stress, and endocrine function. They found that microplastic exposure modulated genes involved in inflammation and detoxification pathways, indicating biological stress at the molecular level. The study provides evidence that microplastics can trigger gene-level disruptions in fish even before visible physical symptoms appear.
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 microplastics and nanoplastics induce neurotoxicity in zebrafish via oxidative stress and neurotransmitter disruption
Researchers exposed zebrafish embryos to polystyrene micro- and nanoplastics and found that both particle sizes caused neurodevelopmental toxicity, with nanoplastics being more potent. The plastic particles induced oxidative stress in the brain and disrupted neurotransmitter levels critical for normal neural development. The study suggests that microplastic and nanoplastic contamination in aquatic environments may pose significant risks to the neurological development of fish.
Nanoplastics impact the zebrafish (Danio rerio) transcriptome: Associated developmental and neurobehavioral consequences
Researchers exposed developing zebrafish larvae to polystyrene nanoplastics of two sizes and found dose-dependent accumulation in tissues along with swimming hyperactivity, despite no effects on mortality or hatching. Transcriptomic analysis revealed changes in gene expression associated with neurodegeneration and motor dysfunction at both high and low concentrations. The study suggests that nanoplastic exposure during early development can alter brain function and behavior in ways that may reduce organismal fitness.
Assessing the impact of dietary polystyrene nanoplastics on growth performance, immunological parameters, and antioxidant defense in zebrafish (Danio rerio)
Researchers fed zebrafish diets containing different concentrations of polystyrene nanoplastics for 30 days and observed reduced growth and increased stress markers at higher doses. The study found that nanoplastic exposure triggered oxidative stress, elevated cortisol levels, and altered immune-related gene expression, suggesting potential health impacts on fish from dietary nanoplastic intake.
Embryotoxicity of polystyrene microplastics in zebrafish Danio rerio
Researchers exposed zebrafish embryos to polystyrene microplastics during early development and observed serious physical deformities, particularly in the spine, tail, and eyes, despite no increase in mortality. The exposed larvae also showed elevated expression of genes involved in oxidative stress defense and cellular detoxification. The findings suggest that microplastics can disrupt critical developmental stages in freshwater fish even when they do not directly cause death.
Toxicological impacts of nanopolystyrene on zebrafish oocyte with insight into the mechanism of action: An expression-based analysis
Researchers investigated the mechanism by which nanopolystyrene causes toxicity in zebrafish oocytes, finding it triggers oxidative stress, immune disruption, and mitochondrial dysfunction through changes in key gene expression pathways.
Transcriptome and Gene Family Analyses Reveal the Physiological and Immune Regulatory Mechanisms of Channa maculata Larvae in Response to Nanoplastic-Induced Oxidative Stress
Researchers exposed larvae of blotched snakehead fish to polystyrene nanoplastics at concentrations ranging from 0.05 to 20 mg/L and observed concentration-dependent damage to the liver and intestines. The nanoplastics triggered oxidative stress responses and affected genes involved in immune regulation and detoxification. The study suggests that nanoplastic pollution during early fish development could compromise both organ function and immune defenses.
Polystyrene microplastics modulated bdnf expression triggering neurotoxicity via apoptotic pathway in zebrafish embryos
Zebrafish embryos exposed to polystyrene microplastics showed brain damage, abnormal behavior, and changes in a key brain development gene called BDNF that controls nerve cell growth and survival. The microplastics triggered oxidative stress and activated cell-death pathways in developing brain tissue. These findings raise concerns that microplastic exposure during early development could interfere with brain formation and function.
Polystyrene nanoplastics (20 nm) are able to bioaccumulate and cause oxidative DNA damages in the brain tissue of zebrafish embryo (Danio rerio)
Researchers microinjected 20-nanometer polystyrene nanoplastics into zebrafish embryos to simulate dietary or maternal exposure and tracked their fate over 120 hours. The study found that nanoplastics reached and bioaccumulated in the brain, causing oxidative DNA damage in the regions where they accumulated. The research team used transmission electron microscopy to image nanoplastics in a vertebrate brain for the first time, also observing increased mortality, developmental abnormalities, and elevated reactive oxygen species.
Sub-chronic nanoplastic toxicity in Etroplus suratensis (Pisces, Cichilidae): Insights into tissue accumulation, stress and metabolic disruption
Researchers exposed pearl spot fish to polystyrene nanoplastics at different concentrations for 14 days and found that the particles accumulated in multiple organs with concentration-dependent distribution patterns. The nanoplastics caused elevated glucose and cholesterol levels, suppressed antioxidant defenses, and increased markers of oxidative damage and stress. Gene expression changes in stress response and growth-related genes suggest that nanoplastic exposure may impair both immune function and normal development in fish.
Effects of polystyrene nanoplastic size on zebrafish embryo development
Researchers exposed zebrafish embryos to polystyrene nanoplastics of four sizes and found only the smallest (30 nm) caused mortality and altered oxidative stress and apoptosis gene expression, while larger particles (100–450 nm) were ingested and accumulated in the digestive system without causing developmental malformations.
Effects of microplastics on head kidney gene expression and enzymatic biomarkers in adult zebrafish
Researchers exposed adult zebrafish to a mix of polystyrene and high-density polyethylene microplastics for 20 days and examined effects on gene expression and enzyme activity. The lower concentration activated genes involved in xenobiotic metabolism and adaptive immunity, while the higher concentration inhibited acetylcholinesterase, an enzyme important for nervous system function. The findings suggest that microplastic exposure can trigger immune and metabolic responses and may pose neurotoxic risks in fish.
Neurotoxicity of polystyrene nanoplastics with different particle sizes at environment-related concentrations on early zebrafish embryos
Researchers exposed zebrafish embryos to polystyrene nanoplastics of different sizes at concentrations found in the environment and observed significant brain damage. The nanoplastics caused loss of neurons, shortened nerve fibers, and disrupted brain signaling systems that control behavior. Smaller nanoplastics caused the most severe damage because they could pass through protective barriers more easily, suggesting that the tiniest plastic particles pose the greatest risk to brain development.
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.
Polystyrene nanospheres-induced hepatotoxicity in swamp eel (Monopterus albus): From biochemical, pathological and transcriptomic perspectives
Researchers exposed swamp eels to polystyrene nanoplastics for 28 days and found significant liver damage including oxidative stress, tissue abnormalities, and disrupted gene expression related to immune response and metabolism. Higher concentrations caused more severe liver injury, with changes detectable at both the biochemical and genetic levels. This study adds evidence that nanoplastic exposure can harm liver function in freshwater species important to aquaculture and local food supplies.
Transcriptome sequencing and metabolite analysis reveal the toxic effects of nanoplastics on tilapia after exposure to polystyrene
Researchers exposed larval tilapia to polystyrene nanoplastics and then analyzed changes in gene expression and metabolic profiles after a recovery period. They found that nanoplastic exposure disrupted immune-related pathways, energy metabolism, and lipid processing in the fish, with some effects persisting even after exposure ended. The study suggests that nanoplastics can cause lasting metabolic and immune disruptions in freshwater fish.
Polystyrene nanoplastics induce developmental impairments and vasotoxicity in zebrafish (Danio rerio)
Zebrafish exposed to polystyrene nanoplastics at environmentally realistic concentrations showed developmental problems including heart defects, brain abnormalities, blood vessel damage, and reduced swimming ability. The nanoplastics accumulated on the fish's body and triggered cell damage and oxidative stress even at very low doses. Since zebrafish are commonly used to model human developmental processes, these findings raise concerns about what nanoplastic exposure could mean for early human development.
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.
Effects of nanoplastics on zebrafish embryo-larval stages: A case study with polystyrene (PS) and polymethylmethacrylate (PMMA) particles
Researchers assessed the effects of polystyrene and polymethylmethacrylate nanoparticles on zebrafish embryos and larvae over 96 hours. The study found that these nanoplastics affected biochemical endpoints related to neurotransmission, antioxidant status, oxidative damage, and energy metabolism, with effects varying by plastic type. Evidence suggests that smaller plastic particles may have increased bioavailability and reactivity compared to larger fragments.
Shedding light on the impacts of gestational exposure to polystyrene nanoplastics on the reproductive performance of Poecilia reticulata female and on the biochemical response of embryos
Researchers examined how gestational exposure to polystyrene nanoplastics affects the viviparous fish Poecilia reticulata, finding impacts on female reproductive performance and biochemical alterations in embryos including oxidative stress and cholinesterase disruption.
Sequencing data of Amphiprion ocellaris (clownfish) exposed to polystyrene nanoplastic
Researchers exposed clownfish to polystyrene nanoplastics at environmentally relevant and high concentrations for seven days and performed biochemical and transcriptomic analyses. The study found that even low-concentration exposure triggered significant gene expression changes indicating energy reallocation and stress responses, while high concentrations amplified these effects and activated additional inflammatory and detoxification pathways.
Impacts of Environmental Concentrations of Nanoplastics on Zebrafish Neurobehavior and Reproductive Toxicity
Researchers exposed zebrafish to environmentally realistic levels of polystyrene nanoplastics and found they caused both brain and reproductive damage. The nanoplastics disrupted neurotransmitter signaling and impaired the hormonal pathway connecting the brain to reproductive organs, with different effects in males and females. These findings suggest that even low-level nanoplastic exposure could affect both brain function and fertility in aquatic life that humans may consume.