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The effect of nano plastic toxicity on the gill tissue of goldfish (Carassius auratus)
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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.
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 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.
More Papers Like This
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(
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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.
Effects of Polystyrene Microplastics on Behavioural Response and Histopathology of Carassius auratus
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Goldfish were exposed to 10 mg/L polystyrene microplastics for 28 days, after which researchers observed significant behavioral changes and histopathological damage in the gills and intestines. The findings suggest that even short-term PS microplastic exposure causes measurable organ damage in freshwater fish.
Histopathological Alterations in Gills, Liver and Kidneys of Goldfish (Carassius auratus) Exposed to Polystyrene Microplastics
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Goldfish chronically exposed to 1 μm polystyrene microplastics at 1.53 mg/L for 28 days developed histopathological damage in gills, kidneys, and liver, including epithelial lifting, glomerular atrophy, and hepatocellular necrosis, demonstrating organ-level toxicity from chronic PS-MP exposure.
Size-dependent effects of microplastic on uptake, immune system, related gene expression and histopathology of goldfish (Carassius auratus)
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Researchers exposed goldfish to two sizes of polystyrene microplastics at environmentally relevant concentrations for 28 days. The study found that microplastics accumulated in gill, liver, and intestine tissues, causing damage that worsened with smaller particle size and higher doses. The results indicate that microplastics trigger oxidative stress and immune responses in fish, with smaller particles posing greater health risks.
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