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61,005 resultsShowing papers similar to Polystyrene nanoplastics induced size-dependent developmental and neurobehavioral toxicities in embryonic and juvenile zebrafish
ClearNeurotoxicity 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.
Evaluation of phenotypic and behavioral toxicity of micro- and nano-plastic polystyrene particles in larval zebrafish ( Danio rerio )
Researchers exposed larval zebrafish (Danio rerio) to six sizes (0.05–10.2 µm) and multiple concentrations of polystyrene micro/nanoplastics and assessed toxicity using embryo and behavioral assays. Smaller particles and higher concentrations caused greater phenotypic and behavioral toxicity, with particle uptake and organ distribution confirmed, establishing size as a key determinant of polystyrene MP toxicity in a vertebrate developmental model.
Evaluation of phenotypic and behavioral toxicity of micro- and nano-plastic polystyrene particles in larval zebrafish (Danio rerio)
Researchers exposed zebrafish embryos to polystyrene particles ranging from 50 nanometers to 10 micrometers and found that nearly all sizes caused physical abnormalities and changes in swimming behavior. Smaller particles were taken up more readily and distributed to organs including the brain and gut. These findings are relevant to human health because zebrafish share many biological pathways with humans, and the results suggest that both micro- and nano-sized plastics can cause developmental harm.
Size-dependent and tissue specific accumulation of polystyrene microplastics and nanoplastics in zebrafish
Researchers tracked size-dependent accumulation of polystyrene micro- and nanoplastics in multiple zebrafish tissues, finding that smaller particles distributed more broadly throughout the body compared to larger ones. Nanoplastics showed greater systemic distribution including into brain and reproductive tissues, raising concerns about size-dependent health risks.
Size matters: Zebrafish (Danio rerio) as a model to study toxicity of nanoplastics from cells to the whole organism
Researchers used zebrafish as a model organism to study the toxic effects of polystyrene nanoplastics at both cellular and whole-organism levels. They found that smaller nanoplastic particles were taken up more readily by cells and caused greater oxidative stress and developmental abnormalities than larger particles. The study confirms that particle size is a critical determinant of nanoplastic toxicity, with the smallest particles posing the greatest biological risks.
Mechanisms Underlying the Size-Dependent Neurotoxicity of Polystyrene Nanoplastics in Zebrafish
Scientists discovered that smaller nanoplastics cause more severe brain and nerve damage in zebrafish than larger ones, and identified the molecular pathways behind this size-dependent toxicity. The smaller particles more easily crossed biological barriers and triggered greater oxidative stress and inflammation in the nervous system, which is important for understanding potential neurological risks of nanoplastic exposure.
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.
Size-Dependent Effects of Polystyrene Nanoparticles (PS-NPs) on Behaviors and Endogenous Neurochemicals in Zebrafish Larvae
Researchers exposed zebrafish larvae to polystyrene nanoparticles of two sizes (50 nm and 100 nm) to assess size-dependent neurotoxic effects. The study found that 50 nm particles circulated in blood vessels and accumulated in the brain, inducing abnormal behavior and disrupting dopaminergic metabolites, while 100 nm particles had distinct but less pronounced neurological effects.
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.
Uptake Routes and Biodistribution of Polystyrene Nanoplastics on Zebrafish Larvae and Toxic Effects on Development
Researchers exposed zebrafish embryos and larvae to amino-modified polystyrene nanoplastics to study uptake routes and biodistribution. The study found that nanoplastics accumulated in target organs and caused toxic developmental effects, providing evidence that these tiny plastic fragments can penetrate biological barriers and interfere with normal development in aquatic organisms.
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.
Nanoplastics Cause Neurobehavioral Impairments, Reproductive and Oxidative Damages, and Biomarker Responses in Zebrafish: Throwing up Alarms of Wide Spread Health Risk of Exposure
Researchers exposed adult zebrafish to polystyrene nanoplastics and found that the particles accumulated in the brain, liver, intestine, and gonads, causing significant behavioral and physiological changes. The fish showed disrupted energy metabolism, oxidative stress, and altered locomotion, aggression, and predator avoidance behaviors. The findings raise concerns about the widespread health risks of nanoplastic exposure, as these particles are small enough to cross biological membranes.
Polystyrene Nanoplastic Exposure Adversely Affects Survivability of Zebrafish Larvae
Researchers found that polystyrene nanoplastic exposure significantly reduces survival rates of zebrafish larvae in a dose-dependent manner, documenting behavioral abnormalities and developmental defects that highlight the toxicity of nanoscale plastic particles to early vertebrate life.
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.
Size-dependent seizurogenic effect of polystyrene microplastics in zebrafish embryos
Researchers exposed zebrafish embryos to polystyrene microplastics of different sizes and found that 10-micrometer particles caused the most significant neurotoxic effects, including seizure-like brain activity and disrupted neurochemical signaling. The study suggests that microplastic particle size plays a critical role in determining neurotoxicity, with mid-range sizes posing the greatest concern for developing nervous systems.
From particle size to brain function: a zebrafish-based review of micro/nanoplastic-induced neurobehavioral toxicity and mechanistic pathways
This review uses zebrafish as a model to examine how micro- and nanoplastics cause neurobehavioral toxicity, linking particle size to brain function disruption. Researchers summarize evidence that these plastic particles impair fish behavior and cause molecular-level damage in the nervous system. The findings highlight the growing concern that micro- and nanoplastics are emerging neurotoxicants in aquatic environments.
Nanoplastics transport in zebrafish brain: Molecular and phenotypic behavioral impacts
This study tracked how nanoplastics of two sizes (50 nm and 200 nm) accumulate in and clear from zebrafish brains. Smaller nanoplastics built up more and lasted longer in the brain, causing greater damage to neurons and more behavioral changes like reduced activity and impaired learning. The findings suggest that the tiniest plastic particles may pose the most risk to brain health because they are harder for the body to remove.
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.
Microplastics induced developmental toxicity with microcirculation dysfunction in zebrafish embryos
Researchers exposed zebrafish embryos to polystyrene microplastics (1 micrometer) and nanoplastics (0.4 micrometer) to assess developmental toxicity. They found that nanoplastics caused significantly higher mortality and more severe microcirculation dysfunction than microplastics, despite being less visible in solution. The study indicates that smaller plastic particles may pose greater developmental risks to aquatic organisms during early life stages.
Down to size: Exploring the influence of plastic particle Dimensions on physiological and nervous responses in early-stage zebrafish
Researchers compared the effects of microplastics versus nanoplastics on developing zebrafish and found that only the nanoplastics (250 nanometers) were small enough to pass through the protective egg membrane and directly reach the embryo. The nanoplastics caused heart rate changes and neurotoxic effects at the larval stage, while the larger microplastics mainly affected the embryos indirectly from outside. This demonstrates that smaller plastic particles are more dangerous during early development because they can bypass protective barriers.
Uptake, tissue distribution, and toxicity of polystyrene nanoparticles in developing zebrafish (Danio rerio)
Researchers tracked the uptake and distribution of polystyrene nanoparticles in developing zebrafish and found that the particles accumulated in the yolk sac and then spread to the brain, liver, heart, and other organs. While the nanoparticles did not cause significant mortality or deformities, they did reduce heart rate and alter swimming behavior. The study suggests that nanoplastics can penetrate biological barriers and accumulate in multiple tissues during early development.
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.
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.
Exposure route affects the distribution and toxicity of polystyrene nanoplastics in zebrafish
Researchers compared waterborne versus microinjection exposure to polystyrene nanoplastics in zebrafish and found that aqueous exposure delivered higher nanoplastic concentrations to the brain and eyes, caused greater developmental abnormalities, reduced antioxidant gene expression, and produced more severe behavioral effects than direct injection, highlighting exposure route as a critical variable in nanoplastic toxicity.