Polystyrene Nanoplastics Impact the Bioenergetics of Developing Zebrafish and Limit Molecular and Physiological Adaptive Responses to Acute Temperature Stress

Polystyrene nanoplastics impact the bioenergetics of developing zebrafish and limit molecular and physiological adaptive responses to acute temperature stress

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Researchers studied how polystyrene nanoplastics affect developing zebrafish under heat stress conditions and found that the combination impairs energy production at the cellular level. While nanoplastics alone did not visibly alter development, they reduced mitochondrial efficiency and limited the fish's ability to adapt to rising temperatures. The findings suggest that nanoplastic pollution could make aquatic organisms more vulnerable to the effects of climate change.

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.

Nanoplastics disrupt Thyroid Hormone Homeostasis and Neurodevelopment in Zebrafish: A Systems-Level Assessment