Polystyrene Nanoplastics Induce Developmental Impairments and Vasotoxicity in Zebrafish (Danio Rerio)

Simulated Environmental Nanoplastics Induce Zebrafish Developmental Toxicity and Stress Response

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Scientists exposed zebrafish embryos to nanoplastics that were specially broken down to mimic how plastic actually degrades in oceans and rivers, and found they caused more harm than the lab-made plastic beads typically used in research, stunting growth, slowing hatching, and triggering stress hormone spikes even at very low doses. Because these effects showed up at concentrations similar to what's found in real water sources, the findings suggest current safety testing may be underestimating the risks nanoplastics pose to both aquatic life and, potentially, to people who drink that water or eat seafood from it.

Bioaccumulation and Toxic Effects of Micro- and Nanoplastics in Zebrafish: A Critical Review

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Researchers comprehensively reviewed micro- and nanoplastic bioaccumulation and toxicity in zebrafish, finding that these particles accumulate in digestive organs, gills, liver, and brain, inducing oxidative stress, developmental delays, neurotoxicity, and transgenerational reproductive impairments that highlight broad ecological risks.

Gauging the effects of a chronic exposure to polystyrene nanoplastics in the liver and intestine of Carassius auratus