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The Effect of Nano Plastic Toxicity on the Gill Tissue of Goldfish )Carassius auratus(
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Scientists exposed goldfish to tiny plastic particles (nanoplastics, smaller than microplastics) in water at levels similar to polluted environments, and found the particles damaged the fish's gill tissue, harming their ability to breathe and regulate salt balance. This matters because these same tiny plastics are increasingly found in our water, food, and even human blood and organs—if they can damage delicate tissue in fish, researchers are concerned they may pose similar risks to human health, though more research is needed to confirm this in people.
With the increase in plastic pollution in aquatic ecosystems, nanoplastics have become an emerging pollutant, raising serious environmental concerns. Among these pollutants, polystyrene nanoplastics are of particular importance due to their very small size, high stability, and ability to penetrate biological tissues. The aim of this study is to investigate the effects of polystyrene nanoplastic toxicity on histological changes in goldfish gills, as they are one of the most sensitive respiratory and ionic regulation organs in fish. In this study, fishes were randomly divided into group control and two treatments with different concentrations (0.5 mg/L and 1 mg/L) of polystyrene nanoplastics and were exposed to these particles for 10, 15, and 20 days. After the end of the exposure period, gill samples were collected and, after fixation and appropriate staining, tissue changes were examined microscopically. The results of the study showed that exposure of fish to polystyrene nanoplastics leads to significant pathological changes in gill tissue, which increase with increasing nanoplastic concentration. In conclusion, it can be said that polystyrene nanoplastics caused structural damage to gill tissue, disrupt respiratory function and ionic balance in fish, and can be considered a serious threat to aquatic animal health and the sustainability of aquatic ecosystems.
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The effect of nano plastic toxicity on the gill tissue of goldfish (Carassius auratus)
AI summary Read the abstract
Researchers exposed goldfish to polystyrene nanoplastics at two concentrations over 20 days and found dose-dependent pathological damage to gill tissue — the organ responsible for both respiration and ion regulation — with structural degradation worsening as concentration and exposure duration increased.
The effect of nano plastic toxicity on the gill tissue of goldfish (Carassius auratus)
AI summary Read the abstract
Researchers exposed goldfish to polystyrene nanoplastics at two concentrations over 10–20 days and found progressive, dose-dependent histopathological damage to gill tissue, impairing respiratory function and ionic regulation in ways that scale with both concentration and duration of exposure.
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Scientists exposed farmed carp to microplastics and even smaller nanoplastics in water, finding both damaged the fish's gut and liver, disrupted digestion and gut bacteria, and slowed growth, with the tinier nanoplastics causing more harm. Since these fish are a food source, this raises questions about how widespread plastic pollution in waterways could affect the health and quality of fish we eat.
Real-time monitoring of microplastic accumulation in fish bodies using transparent goldfish revealed initial attack on the gill
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Researchers used transparent goldfish to track fluorescently labeled microplastic beads in living tissue over 28 days, finding that particles initially accumulated in the intestines but from day 14 onward concentrated heavily in the gills, with gill accumulation associated with epithelial cell death via surface binding and cellular invasion that impaired respiratory function and drove mortality.
Environmentally derived nanoplastics induce oxidative and genotoxic responses in gilthead seabream (Sparus aurata)
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Scientists created tiny plastic particles from real ocean pollution and exposed fish to them for four days. The plastic particles didn't kill the fish, but they damaged the fish's DNA and caused harmful stress inside their cells. This matters because these same tiny plastics are building up in our oceans and food chain, potentially affecting the seafood we eat.
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