Proceedings of the 2025 7th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2025)

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Hydrodynamics Increase Microplastics Bioaccumulation and Associated Neurotoxicity in Freshwater Fish Brain

Authors
Majid Rasta1, *, Niloofar Shabanpoor Lashkaryan1, Xiaotao Shi1
1College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, 443002, Hubei, China
*Corresponding author. Email: rasta_majid1987@yahoo.com
Corresponding Author
Majid Rasta
Available Online 16 December 2025.
DOI
10.2991/978-94-6463-902-5_36How to use a DOI?
Keywords
Microplastics; Hydrodynamics; Bioaccumulation; Neurotoxicity; Oxidative stress
Abstract

Microplastics (MPs) are an emerging threat to aquatic health, with growing evidence of their neurotoxic potential. This study investigated the bioaccumulation and neurotoxic impacts of 5 µm polystyrene microplastics (PS-MPs) on the brain of Ctenopharyngodon idella under varying water velocity conditions. Fish were exposed for seven days to 1000 µg/L PS-MPs, alone or in combination with low, medium, and high water velocities. Bioaccumulation was quantified using fluorescence spectrophotometry and microscopy. Histopathological changes and biochemical markers, including superoxide dismutase, lipid peroxidation, and acetylcholinesterase, were analyzed. Results revealed significantly higher brain accumulation of MPs and severe tissue damage in the MPs + HV group, along with increased oxidative stress and AChE inhibition, indicating profound neurotoxicity. The findings underscore the synergistic effects of hydrodynamics and MPs on fish brain health.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2025 7th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2025)
Series
Advances in Engineering Research
Publication Date
16 December 2025
ISBN
978-94-6463-902-5
ISSN
2352-5401
DOI
10.2991/978-94-6463-902-5_36How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Majid Rasta
AU  - Niloofar Shabanpoor Lashkaryan
AU  - Xiaotao Shi
PY  - 2025
DA  - 2025/12/16
TI  - Hydrodynamics Increase Microplastics Bioaccumulation and Associated Neurotoxicity in Freshwater Fish Brain
BT  - Proceedings of the 2025 7th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2025)
PB  - Atlantis Press
SP  - 373
EP  - 379
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-902-5_36
DO  - 10.2991/978-94-6463-902-5_36
ID  - Rasta2025
ER  -