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Quantifying the vector effects of polyethylene microplastics on the accumulation of anthracene to Japanese medaka (Oryzias latipes)

Aquatic Toxicology 2020 38 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Yangqing Liu, Yuki Takai, Xuchun Qiu, Yuki Takai, Yuji Oshima Yangqing Liu, Yuki Takai, Xuchun Qiu, Xuchun Qiu, Yuki Takai, Xuchun Qiu, Yuki Takai, Souvannasing Saovany, Xuchun Qiu, Yuki Takai, Yohei Shimasaki, Yuki Takai, Yuki Takai, Yuki Takai, Yuki Takai, Yuki Takai, Xuchun Qiu, Yuji Oshima Yuji Oshima Yuji Oshima Xuchun Qiu, Aimi Akasaka, Aimi Akasaka, Yuki Takai, Yuji Oshima Yoshiyuki Inoue, Yohei Shimasaki, Xuchun Qiu, Yangqing Liu, Yohei Shimasaki, Xuchun Qiu, Yuji Oshima Yuki Takai, Yohei Shimasaki, Yohei Shimasaki, Yohei Shimasaki, Yohei Shimasaki, Xuchun Qiu, Xuchun Qiu, Naoaki Yakata, Naoaki Yakata, Yuji Oshima Yangqing Liu, Yuki Takai, Yuki Takai, Yuji Oshima Xuchun Qiu, Yohei Shimasaki, Yangqing Liu, Yuji Oshima Yuki Takai, Yuji Oshima Mami Waseda, Mami Waseda, Yohei Shimasaki, Xuchun Qiu, Yuji Oshima Yohei Shimasaki, Yohei Shimasaki, Yuji Oshima Yuji Oshima Yuji Oshima Yohei Shimasaki, Yohei Shimasaki, Yohei Shimasaki, Yuji Oshima Yohei Shimasaki, Xuchun Qiu, Yuji Oshima

Summary

Japanese medaka fish (Oryzias latipes) were exposed to polyethylene microplastics carrying anthracene to quantify the vector effect of microplastics compared to other chemical uptake pathways. The study assessed the relative contribution of microplastic ingestion versus dissolved exposure to total anthracene body burden, providing data for realistic risk assessment of microplastics as chemical vectors.

Polymers

Body Systems

Digestive

Models

Fish other

Study Type Environmental

To better assess the risk of microplastics (MPs) as a vector for contaminants, it is essential to understand the relative importance of MPs compared to other pathways for chemical transfer as well as the consequences of co-exposure. In this study, we exposed Japanese medaka (Oryzias latipes) to anthracene (ANT, 0.1 mg/L) in the presence or absence of pristine polyethylene MPs (PE-MPs, 10 beads/L), to quantify the vector effect of PE-MPs on ANT accumulation. Under the ANT-MPs co-exposure conditions, PE-MPs rapidly accumulated in the gastrointestinal tract of the medaka during a 14-day uptake phase, with an average bioconcentration factor of 171.4 L/kg. The PE-MPs could absorb and accumulate approximately 70 % of the ANT from the water sample. The PE-MPs changed the pharmacokinetic profile of ANT in medaka by decreasing both the uptake and depuration rate constants. The one compartment with first-order elimination model estimated that the amounts of ANT in the water phase and absorbed by PE-MPs (i.e., a vector effect) contributed about 67 % and 33 % of the ANT accumulation in medaka, respectively. At the end of the uptake (exposure) phase, however, the presence of PE-MPs did not significantly alter the final ANT concentrations in the fish body or alter the behavioral impacts of ANT. Thus, PE-MPs ingestion may act as a vector to concentrate and transfer ANT to medaka, but the presence of these particles may have limited adverse effects on fish under co-exposure systems of the type used in this study.

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