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Toxicity impact of hydrogen peroxide on the fate of zebrafish and antibiotic resistant bacteria

Authors
Yoon, HyojikKim, Hyun-ChulKim, JongrackYou, KwangtaeCho, YunchulKim, Sungpyo
Issue Date
15-1월-2022
Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Keywords
Hydrogen peroxide; Toxicity assessment; Locomotion; Biofilm; Gene transfer
Citation
JOURNAL OF ENVIRONMENTAL MANAGEMENT, v.302
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume
302
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/135267
DOI
10.1016/j.jenvman.2021.114072
ISSN
0301-4797
Abstract
Hydrogen peroxide (H2O2) is applied in various environments. It could be present at concentrations ranging from nanomolar to micromolar in a water system. It is produced through pollutants and natural activities. Since few studies have been conducted about the impact of naturally produced H2O2 on aquatic organisms, the objective of the present study was to monitor changes in responses of aquatic model organisms such as zebrafish and antibiotic-resistant bacteria to different exogenous H2O2 exposure. Increases in exposure concentration and time induced decreases in the perception of zebrafish larvae (up to 69%) and movement of adult zebrafish (average speed, average acceleration, movement distance, and activity time) compared to the control (non-exposed group). In addition, as a function of H2O2 exposure concentration (0-100,000 nM) and time, up to 20-fold increase (p = 5.00*10(-6)) of lipid peroxidation compared to control was observed. For microorganisms, biofilm, an indirect indicator of resistance to external stressors, was increased up to 68% and gene transfer was increased (p = 2.00*10(-6)) by more than 30% after H2O2 exposure. These results imply that naturally generated H2O2 could adversely affect aquatic environment organisms and public health. Thus, more careful attention is needed for H2O2 production in an aquatic system.
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