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Size-dependent transfer of microplastics across the intestinal wall of the echinoid Paracentrotus lividus
Pyl, M.; Taylor, A.; Oberhänsli, F.; Swarzenski, P.; Hussamy, L.; Besson, M.; Danis, B.; Metian, M. (2022). Size-dependent transfer of microplastics across the intestinal wall of the echinoid Paracentrotus lividus. Aquat. Toxicol. 250: 106235. https://dx.doi.org/10.1016/j.aquatox.2022.106235
In: Aquatic Toxicology. Elsevier Science: Tokyo; New York; London; Amsterdam. ISSN 0166-445X; e-ISSN 1879-1514
Peer reviewed article  
Available in  Authors 
Keywords
    Paracentrotus lividus (Lamarck, 1816) [WoRMS]
    Marine/Coastal
Author keywords
    Ussing chamber; Polyethylene; MP; Translocation; Ingestion; Methodology
Authors  Top 
  • Pyl, M.
  • Taylor, A.
  • Oberhänsli, F.
  • Swarzenski, P.
  • Hussamy, L.
  • Besson, M.
  • Danis, B., more
  • Metian, M.
Abstract
    The fate and toxicity of ingested marine microplastics (MPs) have been of major concern in aquatic ecotoxicology for the last decade. Although their ingestion by a wide range of marine organisms has been proven, the uptake of MPs within organs is not yet fully understood and relies on the ability of ingested microplastics to transfer from the gut to tissues beyond the digestive wall (i.e., translocation). The present study investigates the in vitro transfer of fluorescent high-density polyethylene particles of different sizes classes (1–5 µm; 10–29 µm; 38–45 µm) across the intestinal wall of the sea urchin Paracentrotus lividus using Ussing chambers. Small microplastics (1–5 µm) were proven to be able to cross the intestinal wall of P. lividus and reach the coelomic fluid, while larger microplastics (≥ 10 µm) were not observed to cross the intestinal wall. Results demonstrate a size-dependent passage of polyethylene microparticles across the intestinal walls of P. lividus for the first time, highlighting the suitability of Ussing chamber systems to study the transfer of MPs across the intestinal wall of animals.
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