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Demonstrating the translocation of nanoplastics across the fish intestine using palladium-doped polystyrene in a salmon gut-sac

Environment International 2021 96 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Nathaniel J. Clark, Nathaniel J. Clark, Nathaniel J. Clark, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Nathaniel J. Clark, Farhan R. Khan, Richard C. Thompson Denise M. Mitrano, Farhan R. Khan, Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Farhan R. Khan, Richard C. Thompson Farhan R. Khan, Richard C. Thompson David Boyle, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Nathaniel J. Clark, Nathaniel J. Clark, Richard C. Thompson Richard C. Thompson David Boyle, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Richard C. Thompson Denise M. Mitrano, Richard C. Thompson Farhan R. Khan, Denise M. Mitrano, Richard C. Thompson Farhan R. Khan, Denise M. Mitrano, Farhan R. Khan, Denise M. Mitrano, Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Farhan R. Khan, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Farhan R. Khan, Richard C. Thompson Nathaniel J. Clark, Denise M. Mitrano, Nathaniel J. Clark, Richard C. Thompson Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Nathaniel J. Clark, Denise M. Mitrano, Farhan R. Khan, Denise M. Mitrano, Denise M. Mitrano, Nathaniel J. Clark, Farhan R. Khan, Richard C. Thompson Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Nathaniel J. Clark, Denise M. Mitrano, Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Farhan R. Khan, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Farhan R. Khan, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Farhan R. Khan, Richard C. Thompson Richard C. Thompson Richard C. Thompson Farhan R. Khan, Richard C. Thompson Farhan R. Khan, Denise M. Mitrano, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Nathaniel J. Clark, Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Denise M. Mitrano, Farhan R. Khan, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson David Boyle, David Boyle, Richard C. Thompson Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Nathaniel J. Clark, Richard C. Thompson Denise M. Mitrano, Richard C. Thompson Farhan R. Khan, Farhan R. Khan, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Farhan R. Khan, Richard C. Thompson Denise M. Mitrano, Richard C. Thompson Farhan R. Khan, Richard C. Thompson Denise M. Mitrano, Richard C. Thompson Farhan R. Khan, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Farhan R. Khan, Farhan R. Khan, Richard C. Thompson Farhan R. Khan, Farhan R. Khan, Farhan R. Khan, Denise M. Mitrano, Farhan R. Khan, Farhan R. Khan, Richard C. Thompson Richard C. Thompson Richard C. Thompson Farhan R. Khan, Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Richard C. Thompson Farhan R. Khan, Farhan R. Khan, Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Denise M. Mitrano, Richard C. Thompson Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Denise M. Mitrano, Richard C. Thompson Denise M. Mitrano, Richard C. Thompson Richard C. Thompson Richard C. Thompson

Summary

Researchers used palladium-doped polystyrene nanoplastics to quantitatively measure nanoplastic uptake across the fish intestine in a salmon gut-sac model. The study found that between 200 and 700 million nanoplastics entered the intestinal tissue within four hours, with a fraction passing completely through the gut wall, providing evidence that nanoplastics can potentially distribute throughout the body.

Polymers
Body Systems

Fish are widely reported to ingest microplastics with low levels accumulating in the tissues, but owing to analytical constraints, much less is known about the potential accumulation of nanoplastics via the gut. Recently, the labelling of plastics with inorganic metals (e.g., palladium) has allowed measurements of nanoplastic uptake. The aim of the current study was to quantitatively assess the uptake of nanoplastics by the fish gut using palladium-doped nanoplastics (with a mean hydrodynamic radius of 202 ± 7 nm). By using an ex vivo gut sac exposure system, we show that in 4 h between 200 and 700 million nanoplastics (representing 2.5-9.4% of the administered nanoplastics dose) can enter the mucosa and muscularis layers of the intestine of salmon. Of the particles taken up, up to 700,000 (representing 0.6% of that taken into the tissue) of the nanoplastics passed across the gut epithelium of the anterior intestine and exit into the serosal saline. These data, generated in highly controlled conditions provide a proof-of-concept study, suggesting the potential for nanoplastics to distribute throughout the body, indicating the potential for systemic exposure in fish.

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