期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 420, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.126652
关键词
Antioxidant; Detoxification; Heavy metal; Microplastics; Synergy
资金
- National Research Foundation [2020R1A2C1102480, 2020R1F1A1076854]
- Ministry of Ocean and Fisheries, Korea [20210469]
The study revealed potential synergistic effects between microplastics and zinc, resulting in gender-specific impacts on Daphnia magna, with males showing greater sensitivity than females. Additionally, microplastics were found to act as vectors for metals in the aquatic environment, leading to increased toxicity.
Microplastics are ubiquitous environmental pollutants and a great threat to the aquatic environment. Due to their small size (ranging from 1 mu m to 5 mm), microplastics be easily ingested by a wide range of organisms and can serve as a vector for various contaminants. In this study, additive or possible synergistic effects of microplastics and zinc were demonstrated through sex-specific alterations in behavior, redox status, and modulation of detoxification-related genes in Daphnia magna, with males being more sensitive than females with stronger modulations of antioxidant responses, particularly on glutathione S-transferases expressions. Furthermore, we demonstrated microplastics may act as vectors for metals (Zn2+) in the aquatic environment in D. magna, with reduced bio-concentration of the total Zn concentration, inducing greater toxicity. Our findings demonstrated synergistic toxicity of the heavy metal Zn and microplastics and could contribute to greater understanding of sexspecific effects of microplastics in aquatic organisms.
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