Cited by 1,233Microplastics and Plastic PollutionEnvironmental Toxicology and EcotoxicologyPharmaceutical and Antibiotic Environmental Impacts

Microplastic Size-Dependent Toxicity, Oxidative Stress Induction, and p-JNK and p-p38 Activation in the Monogonont Rotifer ( Brachionus koreanus )

Jeong, Chang-Bum, Won, Eun-Ji, Kang, Hye-Min, Lee, Min-Chul, Hwang, Dae-Sik, Hwang, Un-Ki, Zhou, Bingsheng, Souissi, Sami +2 more·2016·Environmental Science & Technology

Abstract

In this study, we evaluated accumulation and adverse effects of ingestion of microplastics in the monogonont rotifer (Brachionus koreanus). The dependence of microplastic toxicity on particle size was investigated by measuring several in vivo end points and studying the ingestion and egestion using 0.05-, 0.5-, and 6-μm nonfunctionalized polystyrene microbeads. To identify the defense mechanisms activated in response to microplastic exposure, the activities of several antioxidant-related enzymes and the phosphorylation status of mitogen-activated protein kinases (MAPKs) were determined. Exposure to polystyrene microbeads of all sizes led to significant size-dependent effects, including reduced growth rate, reduced fecundity, decreased lifespan and longer reproduction time. Rotifers exposed to 6-μm fluorescently labeled microbeads exhibited almost no fluorescence after 24 h, while rotifers exposed to 0.05- and 0.5-μm fluorescently labeled microbeads displayed fluorescence until 48 h, suggesting that 6-μm microbeads are more effectively egested from B. koreanus than 0.05- or 0.5-μm microbeads. This observation provides a potential explanation for our findings that microbead toxicity was size-dependent and smaller microbeads were more toxic. In vitro tests revealed that antioxidant-related enzymes and MAPK signaling pathways were significantly activated in response to microplastic exposure in a size-dependent manner.

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Crossref · 10.1021/acs.est.6b01441

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  • Nanoplastics have high surface to volume ratios and thus better adsorb toxic compounds and potentially transfer them to organisms after ingestion.

    “Nanoplastics are characterised by high surface to volume ratios and thus better adsorb toxic compounds and potentially transfers them to organisms aer ingestion.16,18,137,[147][148][149]”

    From The fate of plastic in the ocean environment – a minireview (2021) · cites this paper as [148]

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Authors
Jeong, C.-B., Won, E.-J., Kang, H.-M., Lee, M.-C., Hwang, D.-S., Hwang, U.-K., Zhou, B., Souissi, S., Lee, S.-J., & Lee, J.-S.
Affiliations
  • Hanyang University (KR)
  • Korea Institute of Ocean Science and Technology (KR)
  • Sungkyunkwan University (KR)
  • National Institute of Fisheries Science (KR)
  • Chinese Academy of Sciences (CN)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Lee, Jae-Seong
Venue
Environmental Science & Technology
Published
2016-08-04
Volume
50
Issue
16
Pages
8849-8857
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2505003366
Cited by
1,233
References
40
Citations by year
2026: 97 · 2025: 131 · 2024: 159 · 2023: 180 · 2022: 189 · 2021: 148 · 2020: 165 · 2019: 89 · 2018: 57 · 2017: 15 · 2016: 2 · 2013: 1
FWCI
29.62
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
  • Institute of Hydrobiology, CAS Institutional Repository (submittedVersion)
Funders
Ministry of Oceans and Fisheries (20150342, PM15050)
Topics
  • Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
Keywords
microplastics, size-dependent toxicity, polystyrene microspheres, oxidative stress, antioxidant enzymes, MAPK signaling, JNK phosphorylation, p38 phosphorylation, growth rate, fecundity, lifespan, microplastic accumulation
MeSH terms
Animals, Antioxidants, Rotifera, Oxidative Stress, Mitogen-Activated Protein Kinases

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