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Influence of Humic Acid on Oxidative Stress Induced by Arsenite and Arsenate Waterborne Exposure in Danio rerio

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Abstract

The studies on how humic acid (HA) influences the oxidative stress of arsenic in aquatic organism is limited. Using Danio rerio as case study, we explored the oxidative stress effects in aquatic organism after 96 h exposure to the HA and arsenic. Results revealed the co-exposure of HA and arsenite elevated the superoxide dismutase activities and downgraded the malondialdehyde. Thus, we speculate that HA may alleviate the oxidative stress induced by arsenite, which may be caused by the HA’s coating in combination with the complexation of arsenite and HA. In addition, HA acted as the reactive oxygen species scavenger, promising to eliminate the oxygen free radicals. Contrastingly, HA may impact little on the arsenate exposure. This study can help better understand oxidative stress mechanism of co-exposure of arsenic and HA in aquatic environment.

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Acknowledgements

The authors in this study are grateful for the support from the National Natural Science Foundation of China (Grant No. 51778031).

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Correspondence to Wenhong Fan.

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Wang, X., Liu, L., Liang, D. et al. Influence of Humic Acid on Oxidative Stress Induced by Arsenite and Arsenate Waterborne Exposure in Danio rerio. Bull Environ Contam Toxicol 106, 786–791 (2021). https://doi.org/10.1007/s00128-021-03197-5

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  • DOI: https://doi.org/10.1007/s00128-021-03197-5

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