Liyun Yin , Zhuomiao Liu , Jian Zhao , Shu Chen , Xiaochuan Wang , Zhenyu Wang
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引用次数: 0
Abstract
Engineered nanoparticles (ENPs) accumulate in marine sediments and exhibit adverse effects on benthic organisms. However, the effect of ENPs on marine benthic food chains is largely unknown. Herein, we investigated the trophic transfer and transformation of CeO2 ENPs within a simulated marine benthic food chain from clamworm (Perinereis aibuhitensis) to turbot (Scophthalmus maximus), as well as their effects on fish flesh quality. The results showed that Ce contents in turbot increased with the accumulation of CeO2 ENPs in clamworm, but no biomagnification of CeO2 ENPs occurred along this food chain. During trophic transfer, CeO2 ENPs in turbot experienced transformation from Ce(IV) to Ce(III). Importantly, CeO2 ENPs accumulated in the muscle of turbot and decreased the crude protein, total amino acid, and delicious amino acid contents, as well as the texture of the muscle. CeO2 ENPs induced the deterioration of flesh quality, which was mainly related to metabolism in muscle and intestinal disorders caused by oxidative stress. Specifically, CeO2 ENPs increased the relative abundance of Stenotrophomonas and Vibrio in the turbot intestine, while decreasing those of Lactobacillus, Bacillus, and Acinetobacter. Significant disturbances in purine and amino acid (aspartate, glutamate, glycine, etc.) metabolism in muscle were induced by CeO2 ENPs. Moreover, correlation analysis showed that microbiota dysbiosis was highly correlated with muscle metabolic dysfunction. Our study provides insights into the transfer and transformation of CeO2 ENPs and their interference with fish flesh quality via the gut–muscle axis, providing useful information on assessing ecological risk and food safety in marine environments.
期刊介绍:
Eco-Environment & Health (EEH) is an international and multidisciplinary peer-reviewed journal designed for publications on the frontiers of the ecology, environment and health as well as their related disciplines. EEH focuses on the concept of “One Health” to promote green and sustainable development, dealing with the interactions among ecology, environment and health, and the underlying mechanisms and interventions. Our mission is to be one of the most important flagship journals in the field of environmental health.
Scopes
EEH covers a variety of research areas, including but not limited to ecology and biodiversity conservation, environmental behaviors and bioprocesses of emerging contaminants, human exposure and health effects, and evaluation, management and regulation of environmental risks. The key topics of EEH include:
1) Ecology and Biodiversity Conservation
Biodiversity
Ecological restoration
Ecological safety
Protected area
2) Environmental and Biological Fate of Emerging Contaminants
Environmental behaviors
Environmental processes
Environmental microbiology
3) Human Exposure and Health Effects
Environmental toxicology
Environmental epidemiology
Environmental health risk
Food safety
4) Evaluation, Management and Regulation of Environmental Risks
Chemical safety
Environmental policy
Health policy
Health economics
Environmental remediation