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61,005 resultsShowing papers similar to Uptake of Nanoplastic particles by zebrafish embryos triggers the macrophage response at early developmental stage
ClearZebrafish embryos as a biological model to study the effects of nanoplastics
This study used zebrafish embryos as a model system to investigate the toxic effects of nanoplastics, finding developmental disruptions at concentrations relevant to environmental exposure. Zebrafish embryos are a widely used model because their transparency allows direct visualization of organ development during toxicant exposure.
Bioaccumulation of various nanoplastic particles in larval zebrafish (Danio rerio)
Researchers exposed larval zebrafish (Danio rerio) to 40-60 nm and 100 nm polystyrene nanoplastic particles using standard fish embryo toxicity and general behavioral toxicity assays from 6-120 hours post-fertilization, combining toxicity endpoints with fluorescence microscopy to confirm particle uptake and excretion. The study demonstrated nanoplastic accumulation within zebrafish larvae at tested concentrations, providing mechanistic insights into aquatic organism exposure dynamics for nanoplastics.
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.
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 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.
Using visualization techniques to assess the accumulation of nanoplastics with varying surface modifications
Researchers synthesized fluorescent PMMA nanoplastic particles to study cellular uptake and biodistribution in skin cells and zebrafish embryos, finding that PMMA nanoparticles can enter embryos and accumulate in larval bodies, and highlighting concerns that surface modifications on commercial polystyrene particles may produce misleading results in nanoplastic toxicity studies.
Pathway analysis of systemic transcriptome responses to injected polystyrene particles in zebrafish larvae
Researchers injected fluorescent polystyrene particles into zebrafish embryos at different developmental stages and tracked their distribution and biological effects using imaging and transcriptomics. Particles injected into the yolk of older embryos spread through the bloodstream and accumulated near the heart, triggering strong immune and inflammatory gene responses. The study reveals that even localized microplastic exposure can produce system-wide biological effects in developing organisms.
Special Distribution of Nanoplastics in the Central Nervous System of Zebrafish during Early Development
Researchers injected fluorescent nanoplastics into zebrafish embryos and found the particles became trapped in the brain, eyes, and spinal cord during early development and stayed there rather than moving to other organs. Although the nanoplastics did not embed directly in nerve cells, they still disrupted brain signaling and reduced larval movement, suggesting early-life nanoplastic exposure could interfere with nervous system development.
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.
Barrier function of zebrafish embryonic chorions against microplastics and nanoplastics and its impact on embryo development
Researchers found that zebrafish embryonic membranes effectively block micro- and nanoplastic particles from entering the embryo, but the particles accumulate on the membrane surface and cause indirect harm. The coating of plastic particles on the membrane restricted oxygen flow, accelerated heart rates, and delayed hatching of the embryos. The study shows that even when physically blocked, plastic particles can still disrupt early development in aquatic organisms by altering the embryo's microenvironment.
Evaluation of the infiltration of polystyrene nanobeads in zebrafish embryo tissues after short-term exposure and the related biochemical and behavioural effects
Researchers exposed zebrafish embryos to fluorescent polystyrene nanobeads and used confocal microscopy to confirm nanoplastic uptake beyond the gut — migrating into surrounding tissues — while biochemical markers revealed decreased cyclooxygenase activity, elevated superoxide dismutase, and altered swimming behavior, demonstrating tissue-infiltrating potential after only 48 hours of exposure.
Reactive gliosis in adult zebrafish telencephalon following daily nanoplastic consumption
Adult zebrafish fed polystyrene nanoplastics daily for an extended period developed reactive gliosis in the brain, indicating that nanoplastics crossing the blood-brain barrier triggered an immune response in neural tissue.
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 accumulate in ZFL cell lysosomes and in zebrafish larvae after acute exposure, inducing a synergistic immune response in vitro without affecting larval survival in vivo
Polystyrene nanoplastics were shown to be internalized in zebrafish liver cells and accumulate in lysosomes, and while they triggered an immune response in cell cultures, they did not affect larval zebrafish survival in short-term exposures. This suggests that cellular toxicity may not always translate directly to whole-organism mortality at acute exposure levels.
Exploring developmental toxicity of microplastics and nanoplastics (MNPS): Insights from investigations using zebrafish embryos
This review summarizes research on how micro- and nanoplastics harm embryo development using zebrafish as a model organism that shares genetic similarities with humans. Studies show these tiny plastic particles cause damage to the brain, heart, gut, and immune system of developing embryos, largely through oxidative stress and cell death pathways.
Microplastics alter development, behavior, and innate immunity responses following bacterial infection during zebrafish embryo-larval development
Researchers found that polystyrene microplastics altered zebrafish larval development, behavior, and innate immune responses in a timing-dependent manner, with early embryonic exposure through the egg chorion amplifying susceptibility to subsequent bacterial infection.
Potentiation of polycyclic aromatic hydrocarbon uptake in zebrafish embryos by nanoplastics
Nanoplastics present in the environment were found to enhance the uptake of polycyclic aromatic hydrocarbons (PAHs) in zebrafish embryos, suggesting that plastic particles can act as a "Trojan horse" that increases exposure to other toxic pollutants. This combined toxicity effect raises important concerns about the true health risks of microplastic contamination.
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.
Toxicity Risk of Microplastics and Nanoplastics to Environmental and Human Health
Researchers exposed zebrafish embryos and human cell lines to microplastics and nanoplastics and observed uptake of particles along with toxicity including impaired embryo growth, cardiovascular effects in fish, and reduced energy production in human cells. The study demonstrates cross-species toxicity risks from plastic particle exposure.
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.
Polystyrene nanoplastics induced size-dependent developmental and neurobehavioral toxicities in embryonic and juvenile zebrafish
Researchers exposed zebrafish embryos and juveniles to polystyrene nanoplastics of three different sizes and found that all sizes crossed into the brain, eyes, and other organs. Smaller particles tended to cause different types of damage than larger ones, including changes in brain development and behavior. This size-dependent toxicity is relevant to human health because we are exposed to a wide range of nanoplastic sizes through food and water.
Nanoplastics in the Environment and the Effects on the Zebrafish
This study reviewed the effects of nanoplastic exposure on zebrafish, covering how these tiny particles affect development, organ function, behavior, and reproductive success. Zebrafish are a widely used model organism for toxicology, and findings in this species provide insight into potential effects in other vertebrates including humans.
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.
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.