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Wang W, Ye Y, Liu Y, Sun H, Gao C, Fu X, Li T. Induction of oxidative stress and cardiac developmental toxicity in zebrafish embryos by arsenate at environmentally relevant concentrations. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 280:116529. [PMID: 38843745 DOI: 10.1016/j.ecoenv.2024.116529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 05/25/2024] [Accepted: 05/29/2024] [Indexed: 06/25/2024]
Abstract
The contamination of water by arsenic (As) has emerged as a significant environmental concern due to its well-documented toxicity. Environmentally relevant concentrations of As have been reported to pose a considerable threat to fish. However, previous studies mainly focused on the impacts of As at environmentally relevant concentrations on adult fish, and limited information is available regarding its impacts on fish at early life stage. In this study, zebrafish embryos were employed to evaluate the environmental risks following exposure to different concentrations (0, 25, 50, 75 and 150 μg/L) of pentavalent arsenate (AsV) for 120 hours post fertilization. Our findings indicated that concentrations ≤ 150 μg/L AsV did not exert significant effects on survival or aberration; however, it conspicuously inhibited heart rate of zebrafish larvae. Furthermore, exposure to AsV significantly disrupted mRNA transcription of genes associated with cardiac development, and elongated the distance between the sinus venosus and bulbus arteriosus at 75 μg/L and 150 μg/L treatments. Additionally, AsV exposure enhanced superoxide dismutase (SOD) activity at 50, 75 and 150 μg/L treatments, and increased mRNA transcriptional levels of Cu/ZnSOD and MnSOD at 75 and 150 μg/L treatments. Concurrently, AsV suppressed metallothionein1 (MT1) and MT2 mRNA transcriptions while elevating heat shock protein70 mRNA transcription levels in zebrafish larvae resulting in elevated malondialdehyde (MDA) levels. These findings provide novel insights into the toxic effects exerted by low concentrations of AsV on fish at early life stage, thereby contributing to an exploration into the environmental risks associated with environmentally relevant concentrations.
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Affiliation(s)
- Wenqian Wang
- Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua 321007, China; College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Yanan Ye
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Yingying Liu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Hongjie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Chang Gao
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Xiaoyan Fu
- Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua 321007, China.
| | - Tao Li
- Jinhua Center for Disease Control and Prevention, Jinhua 321000, China.
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2
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Sun H, Liu Y, Wu C, Ma LQ, Guan D, Hong H, Yu H, Lin H, Huang X, Gao P. Dihalogenated nitrophenols in drinking water: Prevalence, resistance to household treatment, and cardiotoxic impact on zebrafish embryo. ECO-ENVIRONMENT & HEALTH 2024; 3:183-191. [PMID: 38646095 PMCID: PMC11031730 DOI: 10.1016/j.eehl.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/27/2024] [Accepted: 02/03/2024] [Indexed: 04/23/2024]
Abstract
Dihalogenated nitrophenols (2,6-DHNPs), an emerging group of aromatic disinfection byproducts (DBPs) detected in drinking water, have limited available information regarding their persistence and toxicological risks. The present study found that 2,6-DHNPs are resistant to major drinking water treatment processes (sedimentation and filtration) and households methods (boiling, filtration, microwave irradiation, and ultrasonic cleaning). To further assess their health risks, we conducted a series of toxicology studies using zebrafish embryos as the model organism. Our findings reveal that these emerging 2,6-DHNPs showed lethal toxicity 248 times greater than that of the regulated DBP, dichloroacetic acid. Specifically, at sublethal concentrations, exposure to 2,6-DHNPs generated reactive oxygen species (ROS), caused apoptosis, inhibited cardiac looping, and induced cardiac failure in zebrafish. Remarkably, the use of a ROS scavenger, N-acetyl-l-cysteine, considerably mitigated these adverse effects, emphasizing the essential role of ROS in 2,6-DHNP-induced cardiotoxicity. Our findings highlight the cardiotoxic potential of 2,6-DHNPs in drinking water even at low concentrations of 19 μg/L and the beneficial effect of N-acetyl-l-cysteine in alleviating the 2,6-DHNP-induced cardiotoxicity. This study underscores the urgent need for increased scrutiny of these emerging compounds in public health discussions.
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Affiliation(s)
- Hongjie Sun
- Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Yingying Liu
- Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Chunxiu Wu
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China
| | - Lena Q. Ma
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Dongxing Guan
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Huachang Hong
- Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Haiying Yu
- Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Hongjun Lin
- Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Xianfeng Huang
- National and Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Peng Gao
- Department of Environmental and Occupational Health, and Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA 15261, United States
- UPMC Hillman Cancer Center, Pittsburgh, PA 15232, United States
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3
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Gao X, Wang X, Jiang Y, Kong D, Pan X, Ma J, Liu Y. Chloro- and bromo-benzoquinone formation and transformation mechanisms in a drinking water-distribution system. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132692. [PMID: 37801978 DOI: 10.1016/j.jhazmat.2023.132692] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 09/30/2023] [Accepted: 09/30/2023] [Indexed: 10/08/2023]
Abstract
Halogenated benzoquinones (HBQs) are frequently detected in tap water. HBQ levels are correlated with water age. As the water-transmission distance (water age) increases, the levels of bromo-benzoquinones (Br-BQs) decreased and those of chloro-benzoquinones (Cl-BQs) remained relatively stable in drinking water-distribution system in the presence of residual chlorine. 2,3,5,6-Tetrachloro-1,4-benzoquinone (TCBQ) and 2,6-dibromo-1,4-benzoquinone (DBBQ) were the most abundant Cl-BQ and Br-BQ, with maximum concentrations of 60.2 and 181.4 ng/L, respectively. TCBQ and DBBQ were chosen as representatives of HBQs to investigate their reactions with chlorine, including kinetics, pathways, and changes in toxicity. The hydrolysis and chlorination rates of HBQs were significantly pH-dependent, and the kinetic rates of DBBQ were faster than TCBQ in the pH range of 5-10. Chlorination converted highly toxic TCBQ and DBBQ to less-toxic chlorinated/brominated aliphatic disinfection by-products (DBPs), thereby reducing the overall toxicity of water bodies. This study provides comprehensive insights into the distinct life cycles of TCBQ and DBBQ in drinking water, covering formation, transformation, and toxicity. These findings provide a nuanced understanding of the risks posed by HBQs at various locations within the drinking water distribution system, offering valuable guidance for improving the control of DBPs in drinking water.
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Affiliation(s)
- Xiaoting Gao
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Xianshi Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Youwei Jiang
- College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, Xinjiang, China
| | - Dezhen Kong
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiangrui Pan
- Qihe County Agriculture and Rural Bureau, Dezhou 251100, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yanan Liu
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China; Shanghai institute of pollution control and ecological security, Shanghai 200092, China.
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4
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Peng H, Wang H, Li W, Jing C, Zhang W, Zhao H, Hu F. Life-cycle exposure to tris (2-chloroethyl) phosphate (TCEP) causes alterations in antioxidative status, ion regulation and histology of zebrafish gills. Comp Biochem Physiol C Toxicol Pharmacol 2023; 274:109746. [PMID: 37717676 DOI: 10.1016/j.cbpc.2023.109746] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 09/04/2023] [Accepted: 09/13/2023] [Indexed: 09/19/2023]
Abstract
Tris (2-chloroethyl) phosphate (TCEP) has been receiving great concerns owing to its ubiquitous occurrence in various environmental compartments and potential risks to wildlife and humans. Gill is structural basis for ion regulation and homeostasis in fish and susceptible to xenobiotics. However, current knowledge on the impacts of long-term exposure to TCEP on the structure and physiological function of fish gills are insufficient. In this work, zebrafish were exposed to environmental realistic concentrations (0.8, 4, 20 and 100 μg/L) of TCEP from 3 h post ferterlization (hpf) till 120 days post ferterlization (dpf). Our results demonstrated that life-cycle exposure to TCEP significantly decreased the activity of glutathione S-transferase (GST), but elevated the activities of antioxidative enzymes including superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and increased malondialdehyde (MDA) content in zebrafish gills. Gene transcription analysis implied that the mRNA expressions of antioxidant-related genes (nrf2, cat and nqo1) were induced, while the transcription of gstα1, hmox1, keap1 were down-regulated, indicating that Nrf2-Keap1 pathway might be activated to defend the oxidative stress induced by TCEP. Additionally, the ion homeostasis was disrupted by TCEP exposure, evidenced by reduced activities of Na+/K+-ATPase (NKA), Ca2+-ATPase and Mg2+-ATPase and downregulated transcription levels of ncc, nkcc, cftr and clc-3. Besides, whole-life exposure to TCEP resulted in a series of structural damages to gills, including epithelial lifting, epithelial rupture, telangiectasis, vacuolation, edema and shortened gill lamellae. Overall, our results demonstrated that long-term TCEP exposure could induce oxidative stress, affect ion regulation and cause histological changes in zebrafish gills.
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Affiliation(s)
- Hangke Peng
- Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hongkai Wang
- Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wen Li
- Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chen Jing
- Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Weiwei Zhang
- Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Haocheng Zhao
- Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Fengxiao Hu
- Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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5
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Zhang J, Ren Z, Chen M. Immunotoxicity and Transcriptome Analyses of Zebrafish ( Danio rerio) Embryos Exposed to 6:2 FTSA. TOXICS 2023; 11:toxics11050459. [PMID: 37235273 DOI: 10.3390/toxics11050459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/04/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023]
Abstract
As a new alternative to perfluorooctane sulfonic acid (PFOS), 6:2 fluorotelomer sulfonic acid (6:2 FTSA) has been widely produced and used in recent years, and its concentration and frequency of detection in the aquatic environment and aquatic organisms are increasing. However, studies of its toxicity in aquatic biological systems are alarmingly scarce, and the relevant toxicological information needs to be improved. In this study, we investigated AB wild-type zebrafish (Danio rerio) embryos subjected to acute 6:2 FTSA exposure for immunotoxicity using immunoassays and transcriptomics. Immune indexes showed significant decreases in SOD and LZM activities, but no significant change in NO content. Other indexes (TNOS, iNOS, ACP, AKP activities, and MDA, IL-1β, TNF-α, NF-κB, TLR4 content) all showed significant increases. These results indicated that 6:2 FTSA induced oxidative stress and inflammatory responses in zebrafish embryos and exhibited immunotoxicity. Consistently, transcriptomics showed that genes involved in the MAPK, TLR and NOD-like receptor signaling pathways (hsp70, hsp701, stat1b, irf3, cxcl8b, map3k8, il1b, tnfa and nfkb) were significantly upregulated after 6:2 FTSA exposure, suggesting that 6:2 FTSA might induce immunotoxicity in zebrafish embryos through the TLR/NOD-MAPK pathway. The results of this study indicate that the safety of 6:2 FTSA should be examined further.
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Affiliation(s)
- Jing Zhang
- Institute of Environment and Ecology, Shandong Normal University, Jinan 250358, China
| | - Zongming Ren
- Institute of Environment and Ecology, Shandong Normal University, Jinan 250358, China
| | - Meng Chen
- Institute of Environment and Ecology, Shandong Normal University, Jinan 250358, China
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Chen Y, Wang J, Yu Z, Xiao L, Xu J, Zhao K, Zhang H, Shang X, Liu C. Transcriptomic and metabolomic analyses revealed epiboly delayed mechanisms of 2,5-dichloro-1, 4-benuinone on zebrafish embryos. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27145-4. [PMID: 37165267 DOI: 10.1007/s11356-023-27145-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 04/17/2023] [Indexed: 05/12/2023]
Abstract
2,5-Dichloro-1,4-benzenediol (2,5-DCBQ) is a putative disinfection by-product that belongs to the halogenated benzoquinone class. However, its developmental toxicity and related mechanism remained unclarified. In our study, we used zebrafish embryos as the model and exposed them to graded concentrations of 2,5-DCBQ (100, 200, 300, 400 μg/L). We found that the rate of epiboly abnormalities increased significantly in a concentration-dependent manner. The results of whole-mount in situ hybridization (WISH) indicated that the expression patterns and levels of chordin (dorsoventral marker), foxa2 (endodermal marker), eve1 (ventral mesodermal marker), and foxb1a (ectodermal marker) were altered, suggesting that 2,5-DCBQ might affect the germ layer development of zebrafish embryos. Integrated transcriptomic and metabolomic analyses were adopted to explore the molecular mechanisms of embryonic developmental delays. The results showed that 2,5-DCBQ exposure induced 1163 differentially expressed genes (DEGs) and 37 differential metabolites (DEMs). Bioinformatic analysis enriched the most affected molecular pathways (Wnt signaling pathway, cell adhesion molecules, actin cytoskeleton regulation) and metabolic pathways (purine metabolism, aminoacyl-tRNA biosynthesis, arginine and proline metabolism) in zebrafish embryos. To summarize, our findings broadened the molecular mechanisms of 2,5-DCBQ embryotoxicity through multi-omics and bioinformatic analyses.
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Affiliation(s)
- Yuanyao Chen
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, 430030, People's Republic of China
| | - Jingming Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, 430030, People's Republic of China
| | - Zhiquan Yu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, 430030, People's Republic of China
| | - Lin Xiao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, 430030, People's Republic of China
| | - Jia Xu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, 430030, People's Republic of China
| | - Kai Zhao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, 430030, People's Republic of China
| | - Huiping Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, 430030, People's Republic of China
| | - Xuejun Shang
- Department of Andrology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, 210002, People's Republic of China
| | - Chunyan Liu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Qiaokou District, Wuhan, 430030, People's Republic of China.
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7
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Jiang N, Li X, Wang Q, Baihetiyaer B, Fan X, Li M, Sun H, Yin X, Wang J. Ecological risk assessment of environmentally relevant concentrations of propofol on zebrafish (Danio rerio) at early life stage: Insight into physiological, biochemical, and molecular aspects. CHEMOSPHERE 2023; 316:137846. [PMID: 36646180 DOI: 10.1016/j.chemosphere.2023.137846] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/25/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Propofol is an intravenous anesthetic injection extensively used in clinic, which has been proved to be neurotoxic in humans. Improper use and disposal of propofol may lead to its release into the aquatic environment, but the potential ecological risk of propofol to aquatic organisms remains poorly understood. For this study, we comprehensively explored the ecotoxicological effects and potential mechanisms of propofol (0.04, 0.2 and 2 mg L-1) on 120 hpf zebrafish (Danio rerio) embryos from physiological, biochemical, and molecular perspectives. The results showed that propofol has moderate toxicity on zebrafish embryos (96 h LC50 = 4.260 mg L-1), which could significantly reduce the hatchability and delay the development. Propofol can trigger reactive oxygen species (ROS) generation, lipid peroxidation (Malondialdehyde, MDA) and DNA damage (8-hydroxy-2-deoxyguanosine, 8-OHdG). The glutathione peroxidase (GPX) activity of zebrafish embryos in 0.04 and 0.2 mg L-1 propofol treatment group was activated in response to oxidative damage, while activities of superoxide dismutase (SOD), catalase (CAT) and GPX in zebrafish treated with 2 mg L-1 was significant inhibited compared with the control group (p<0.05). Moreover, the expression of antioxidant genes and related pathways was inhibited. Apoptosis was investigated at genes level and histochemistry. Molecular docking confirmed that propofol could change in the secondary structure of acetylcholinesterase (AChE) and competitively inhibited acetylcholine (ACh) binding to AChE, which may disturb the nervous system. These results described toxic response and molecular mechanism in zebrafish embryos, providing multiple aspects about ecological risk assessment of propofol in water environment.
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Affiliation(s)
- Nan Jiang
- College of Resources and Environment, Key Laboratory of Agricultural Environment, Shandong Agricultural University, Tai'an, 271000, PR China; College of Natural Resources and Environment, Northwest A&F University, Yangling, 712000, PR China
| | - Xianxu Li
- College of Resources and Environment, Key Laboratory of Agricultural Environment, Shandong Agricultural University, Tai'an, 271000, PR China
| | - Qian Wang
- College of Resources and Environment, Key Laboratory of Agricultural Environment, Shandong Agricultural University, Tai'an, 271000, PR China
| | - Baikerouzi Baihetiyaer
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712000, PR China
| | - Xiaoteng Fan
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712000, PR China
| | - Mingsheng Li
- Department of Anesthesiology, Tai'an City Central Hospital, Tai'an, 271000, PR China
| | - Huimin Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712000, PR China
| | - Xianqiang Yin
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712000, PR China.
| | - Jun Wang
- College of Resources and Environment, Key Laboratory of Agricultural Environment, Shandong Agricultural University, Tai'an, 271000, PR China.
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8
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Su Y, Fang L, Zhong K, Wang T, Bao M, Zhou T, Zhu Y. Isoliquiritigenin induces oxidative stress and immune response in zebrafish embryos. ENVIRONMENTAL TOXICOLOGY 2023; 38:654-665. [PMID: 36617718 DOI: 10.1002/tox.23715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 11/16/2022] [Accepted: 11/20/2022] [Indexed: 06/17/2023]
Abstract
Isoliquiritigenin (ISL) is used in many households' personal hygiene and medicinal products, and the average human daily ISL exposure is 1-2 mg/kg. However, the molecular mechanisms of ISL toxicity in zebrafish embryos have not been fully elucidated. We investigated whether exposure to ISL induces oxidative stress and inflammatory responses in zebrafish. And exposure to ISL significantly affects the expression of immune response-related genes in zebrafish embryos following oxidative stress and the release of pro-inflammatory mediators through Toll-like receptor signaling.
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Affiliation(s)
- Yufang Su
- The Affiliated Maternal and Child Healthcare Hospital of Nanchang University/Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, People's Republic of China
| | - Lei Fang
- Trauma Center, Affiliated Hospital of Jiujiang University, Jiujiang, People's Republic of China
| | - Kaili Zhong
- The Affiliated Maternal and Child Healthcare Hospital of Nanchang University/Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, People's Republic of China
| | - Ting Wang
- The Affiliated Maternal and Child Healthcare Hospital of Nanchang University/Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, People's Republic of China
| | - Mingjie Bao
- The Affiliated Maternal and Child Healthcare Hospital of Nanchang University/Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, People's Republic of China
| | - Ting Zhou
- Union Hospital, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yuan Zhu
- The Affiliated Maternal and Child Healthcare Hospital of Nanchang University/Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, People's Republic of China
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9
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Dong M, Ding Y, Liu Y, Xu Z, Hong H, Sun H, Huang X, Yu X, Chen Q. Molecular insights of 2,6-dichlorobenzoquinone-induced cytotoxicity in zebrafish embryo: Activation of ROS-mediated cell cycle arrest and apoptosis. ENVIRONMENTAL TOXICOLOGY 2023; 38:694-700. [PMID: 36454668 DOI: 10.1002/tox.23721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/18/2022] [Accepted: 11/20/2022] [Indexed: 06/17/2023]
Abstract
2,6-dichloro-1,4-benzoquinone (2,6-DCBQ), as an emerging disinfection by-product, has been frequently detected in waters, posing potential health risk on public health. Although some studies have pointed out that 2,6-DCBQ exposure can induce cytotoxicity, limited information is available for underlying mechanism for 2,6-DCBQ-induced cytotoxicity. To explore this mechanism, we assessed the levels of reactive oxygen species (ROS), acridine orange (AO) staining, and the mRNA transcriptions of genes (Chk2, Cdk2, Ccna, Ccnb and Ccne) involved in cell-cycle and genes (p53, bax, bcl-2 and caspase 3) involved in apoptosis in zebrafish embryo, after exposed to different concentrations (10, 30, 60, 90 and 120 μg/L) of 2,6-DCBQ for 72 h. Our results indicated that 2,6-DCBQ exposure induced ROS generation and cell apoptosis, and disturbed the mRNA transcription of genes related to cell cycle and apoptosis in zebrafish embryo. Moreover, we also found that 30 ~ 60 μg/L 2,6-DCBQ is the important transition from cell-cycle arrest to cell apoptosis. These results provided novel insight into 2,6-DCBQ-induced cytotoxicity.
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Affiliation(s)
- Mingyue Dong
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Yan Ding
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Yingying Liu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Zeqiong Xu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Huachang Hong
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Hongjie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Xianfeng Huang
- National and Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou, China
| | - Xinwei Yu
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, China
| | - Qiang Chen
- Department of Environmental and Occupational Health, Jinhua Center for Disease Control and Prevention, Jinhua, People's Republic of China
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10
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Meintani DG, Chatzimitakos TG, Kasouni AI, Stalikas CD. Untargeted metabolomics of human keratinocytes reveals the impact of exposure to 2,6-dichloro-1,4-benzoquinone and 2,6-dichloro-3-hydroxy-1,4-benzoquinone as emerging disinfection by-products. Metabolomics 2022; 18:89. [PMID: 36342571 PMCID: PMC9640400 DOI: 10.1007/s11306-022-01935-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 09/23/2022] [Indexed: 11/09/2022]
Abstract
INTRODUCTION The 2,6-dichloro-1,4-benzoquinone (DCBQ) and its derivative 2,6-dichloro-3-hydroxy-1,4-benzoquinone (DCBQ-OH) are disinfection by-products (DBPs) and emerging pollutants in the environment. They are considered to be of particular importance as they have a high potential of toxicity and they are likely to be carcinogenic. OBJECTIVES In this study, human epidermal keratinocyte cells (HaCaT) were exposed to the DCBQ and its derivative DCBQ-OH, at concentrations equivalent to their IC20 and IC50, and a study of the metabolic phenotype of cells was performed. METHODS The perturbations induced in cellular metabolites and their relative content were screened and evaluated through a metabolomic study, using 1H-NMR and MS spectroscopy. RESULTS Changes in the metabolic pathways of HaCaT at concentrations corresponding to IC20 and IC50 of DCBQ-OH involved the activation of cell membrane α-linolenic acid, biotin, and glutathione and deactivation of glycolysis/gluconeogenesis at IC50. The changes in metabolic pathways at IC20 and IC50 of DCBQ were associated with the activation of inositol phosphate, pertaining to the transfer of messages from the receptors of the membrane to the interior as well as with riboflavin. Deactivation of biotin metabolism was recorded, among others. The cells exposed to DCBQ exhibited a concentration-dependent decrease in saccharide concentrations. The concentration of steroids increased when cells were exposed to IC20 and decreased at IC50. Although both chemical factors stressed the cells, DCBQ led to the activation of transporting messages through phosphorylated derivatives of inositol. CONCLUSION Our findings provided insights into the impact of the two DBPs on human keratinocytes. Both chemical factors induced energy production perturbations, oxidative stress, and membrane damage.
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Affiliation(s)
- Dimitra G Meintani
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina, Greece
| | - Theodoros G Chatzimitakos
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina, Greece
| | - Athanasia I Kasouni
- Laboratory of Biophysical Chemistry, Department of Biological Applications and Technologies, University of Ioannina, 45110, Ioannina, Greece
| | - Constantine D Stalikas
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina, Greece.
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Wu W, Liu Y, Li C, Zhuo F, Xu Z, Hong H, Sun H, Huang X, Yu X. Oxidative Stress Responses and Gene Transcription of Mice under Chronic-Exposure to 2,6-Dichlorobenzoquinone. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:13801. [PMID: 36360680 PMCID: PMC9656914 DOI: 10.3390/ijerph192113801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/11/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
2,6-Dichlorobenzoquinone (2,6-DCBQ), as an emerging disinfection by-production, was frequently detected and identified in the drinking water; however, limited information is available for the toxic effect of 2,6-DCBQ on mice. In the present study, adult mice were used to assess the impact of 2,6-DCBQ via measuring the responses of antioxidant enzymes (superoxide dismutase (SOD) and catalase (CAT)), the key genes (Heme oxygenase-1 (HO-1), NADPH quinone oxidoreductase 1 (NQO1) and glutamate-L-cysteine ligase catalytic subunit (GCLC)) in the Nrf2-keap1 pathway, and lipid peroxidation (malonaldehyde, MDA). Our results clearly indicated that 2,6-DCBQ decreased the activities of SOD and CAT, repressed the transcriptional levels of key genes in Nrf2-keap1 pathway, further caused oxidative damage on mice. These results provided evidence for assessing the threat of 2,6-DCBQ on human.
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Affiliation(s)
- Wenjing Wu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Yingying Liu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Chunze Li
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Fangyu Zhuo
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Zexiong Xu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Huachang Hong
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Hongjie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China
| | - Xianfeng Huang
- National and Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Xinwei Yu
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan 316021, China
- College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316021, China
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12
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Dong R, Zhang Y, Chen S, Wang H, Hu K, Zhao H, Tian Q, Zeng K, Wang S, Han L. Identification of key pharmacodynamic markers of American ginseng against heart failure based on metabolomics and zebrafish model. Front Pharmacol 2022; 13:909084. [PMID: 36313322 PMCID: PMC9614665 DOI: 10.3389/fphar.2022.909084] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Background: American ginseng (Panax quinquefolium L., AG) is a traditional Chinese medicine with multiple cardiovascular protective properties. Many bioactive components have been discovered in AG over these years. However, the understanding of these key pharmacodynamic components of activity against heart failure is insufficient. Methods: A heart failure model was established using AB line wild-type zebrafish (Danio rerio) to evaluate the anti-heart failure activity of AG. Untargeted metabolomics analysis based on ultra-high performance liquid chromatography-quadrupole electrostatic field orbitrap-mass spectrometry technology (UHPLC-QE-Orbitrap-MS) was performed to screen differential components from AG samples. The potential active components were verified using the zebrafish model. Simultaneously, network pharmacology and molecular docking techniques were used to predict the possible mechanism. Finally, the key targets of six key pharmacodynamic components were verified in zebrafish using quantitative real-time-polymerase chain reaction (Q-PCR) techniques. Results: The heart failure model was successfully established in 48 h of post-fertilization (hpf) zebrafish larvae by treating with verapamil hydrochloride. The zebrafish assay showed that the anti-heart failure effects of AG varied with producing regions. The result of the herbal metabolomic analysis based on UHPLC-QE-Orbitrap-MS indicated that ginsenoside Rg3, ginsenoside Rg5, ginsenoside Rg6, malic acid, quinic acid, L-argininosuccinic acid, 3-methyl-3-butenyl-apinosyl (1→6) glucoside, pseudoginsenoside F11, and annonaine were differential components, which might be responsible for variation in efficacy. Further analysis using zebrafish models, network pharmacology, and Q-PCR techniques showed that ginsenoside Rg3, ginsenoside Rg5, ginsenoside Rg6, malic acid, quinic acid, and pseudoginsenoside F11 were the pharmacodynamic markers (P-markers) responsible for anti-heart failure. Conclusion: We have rapidly identified the P-markers against heart failure in AG using the zebrafish model and metabolomics technology. These P-markers may provide new reference standards for quality control and new drug development of AG.
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Affiliation(s)
- Rong Dong
- School of Pharmacy and Pharmaceutical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Yougang Zhang
- School of Pharmacy and Pharmaceutical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
- School of Pharmaceutical Science of Shanxi Medical University, Taiyuan, China
| | - Shanjun Chen
- School of Pharmacy and Pharmaceutical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Huan Wang
- School of Pharmacy and Pharmaceutical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Kaiqing Hu
- School of Pharmacy and Pharmaceutical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Huanxin Zhao
- School of Pharmacy and Pharmaceutical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Qingping Tian
- School of Pharmaceutical Science of Shanxi Medical University, Taiyuan, China
| | - Kewu Zeng
- School of Pharmaceutical Science of Peking University, Beijing, China
| | - Songsong Wang
- School of Pharmacy and Pharmaceutical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
- *Correspondence: Songsong Wang, ; Liwen Han,
| | - Liwen Han
- School of Pharmacy and Pharmaceutical Science, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
- *Correspondence: Songsong Wang, ; Liwen Han,
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Chen Y, Xiao L, Gao G, He L, Zhao K, Shang X, Liu C. 2, 5-dichloro-1, 4-benuinone exposure to zebrafish embryos/larvae causes neurodevelopmental toxicity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 243:114007. [PMID: 36030688 DOI: 10.1016/j.ecoenv.2022.114007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/13/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
2, 5-dichloro-1, 4-benuinone (2, 5-DCBQ) is an emerging disinfection by-product belonging to the class of halobenzoquinones (HBQs). However, there is limited evidence regarding the neurotoxic effects of 2, 5-DCBQ. To better understand the toxicological mechanisms of aquatic organisms, zebrafish embryos were exposed to 0.2 mg/L, 0.4 mg/L, and 0.6 mg/L of 2, 5-DCBQ from 4 h post-fertilization (hpf) to 120 hpf. Developmental defects, such as reduced body length, decreased heart rate, decreased pigmentation, and abnormal motor axon structure was observed. In particular, the locomotor activity of zebrafish larvae reduced with exposure to increasing 2, 5-DCBQ concentrations, and this effect was more pronounced under dark stimulation. The results indicated that the genes associated with neuronal development (gfap, mbp, syn2a, elavl3, ache, and a1-tubulin) were significantly downregulated after treatment with 2, 5-DCBQ. Furthermore, the KEGG result showed the neuroactive ligand-receptor interaction and apoptosis pathways were visibly disrupted, and we found acetylcholinesterase activity was also affected. In summary, the disinfection by-product, 2, 5-DCBQ, exhibits neurodevelopmental toxicity in zebrafish embryos, providing novel evidence for comprehensive analyses of its toxicity.
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Affiliation(s)
- Yuanyao Chen
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China
| | - Lin Xiao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China
| | - Guangyu Gao
- Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China
| | - Liting He
- The Second People's Hospital of Guiyang, PR China
| | - Kai Zhao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China
| | - Xuejun Shang
- Department of Andrology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, PR China.
| | - Chunyan Liu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
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14
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Zhu M, Lu J, Dong L, Hu S, Peng S, Zhu C. Photochemical transformations of 2, 6-dichlorophenol and 2-chlorophenol with superoxide ions in the atmospheric aqueous phase. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Song W, Wu K, Wu X, Lu Y, Li J, Li J, Cui M. The antiestrogen-like activity and reproductive toxicity of 2,6-DCBQ on female zebrafish upon sub-chronic exposure. J Environ Sci (China) 2022; 117:10-20. [PMID: 35725062 DOI: 10.1016/j.jes.2021.11.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/01/2021] [Accepted: 11/12/2021] [Indexed: 06/15/2023]
Abstract
2,6-Dichloro-1,4-benzoquinone (2,6-DCBQ), an emerging water disinfection by-product, is widely detected in water resources. However, its potential effects on the reproductive system are largely unknown. Here, we investigated the long-term effects of 2,6-DCBQ on gonadal development by exposing zebrafish from 15 to 180 days postfertilization (dpf). Following exposure to 2,6-DCBQ (20 and 100 µg/L), female-specific effects including delayed puberty onset, retarded ovarian growth and breakdown of the zona radiata were observed, resulting in subfertility in adult females. Adverse effects in folliculogenesis disappeared two months after cessation of 2,6-DCBQ administration. In contrast, no adverse impacts were noted in male testes. The effects on females were associated with significant reduction in 17β-estradiol (E2) level, suggesting a role for 2,6-DCBQ in anti-estrogenic activity. E2 level change in blood was further supported by dysregulated expression of genes (cyp19a1a, fshb, kiss3, esr2b, vtg1, and vtg3) related to the hypothalamic-pituitary-gonad-liver (HPGL) axis. The present study demonstrates for the first time that 2,6-DCBQ induces reproductive impairments in female zebrafish through disrupting 17β-estradiol level.
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Affiliation(s)
- Weiyi Song
- Key Laboratory of Human Genetics and Environmental Medicine, School of Public Health, Xuzhou Medical University, Xuzhou 221000, China
| | - Kun Wu
- State Key Laboratory of Biocontrol, Southern Marine Sciences and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Xiling Wu
- Key Laboratory of Human Genetics and Environmental Medicine, School of Public Health, Xuzhou Medical University, Xuzhou 221000, China
| | - Yichun Lu
- School of Energy and Environment, City University of Hong Kong, Hong Kong 999077, China
| | - Jing Li
- Key Laboratory of Human Genetics and Environmental Medicine, School of Public Health, Xuzhou Medical University, Xuzhou 221000, China
| | - Jinhua Li
- School of Public Health, Jilin University, Changchun 130025, China.
| | - Mengqiao Cui
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou 221000, China.
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16
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Wang J, Liu T, Liu L, Chen X, Zhang X, Du H, Wang C, Li J, Li J. Immune dysfunction induced by 2,6-dichloro-1,4-benzoquinone, an emerging water disinfection byproduct, due to the defects of host-microbiome interactions. CHEMOSPHERE 2022; 294:133777. [PMID: 35093416 DOI: 10.1016/j.chemosphere.2022.133777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 01/13/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
2,6-dichloro-1,4-benzoquinone (DCBQ), as an emerging water disinfection byproducts (DBPs), has posed potential risks via the digestion system. However, little is known about the toxicity of DCBQ on the gut microbiome, which plays a critical role on human health. This study has comprehensively investigated the impact of DCBQ on the intestinal microbiome, metabolic functions, and immunity after the mice orally exposure to DCBQ at the concentration of 31.25, 62.5 and 125 mg/kg body weight for 28 days. Our results indicated that DCBQ exposure has perturbed the balance between T helper (Th) 1 mediated pro-inflammatory response and Th2 mediated anti-inflammatory response in mice, especially inducing the activation of immune system toward a Th2 response. DCBQ group has induced gut microbiota dysbiosis, and at phylum level, Proteobacteria was relatively less abundant compared with that in the control group. Furthermore, DCBQ exposure has dramatically perturbed metabolites profiles which were involved in 28 metabolic pathways, such as amino acids biosynthesis and metabolism, lipid metabolism. In particular, the altered gut microbiota showed strong correlations with both the altered metabolites and the altered immunological variables after DCBQ exposure. This study provides evidence on the adverse effects and mechanisms of water disinfection byproduct DCBQ through the interaction of immune-microbiome-metabolome, highlighting the importance to assess DBPs-associated risks.
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Affiliation(s)
- Jun Wang
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Ting Liu
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Lifang Liu
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Xin Chen
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Xu Zhang
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Haiying Du
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Chao Wang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, 100021, China
| | - Juan Li
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China.
| | - Jinhua Li
- Department of Health Toxicology, School of Public Health, Jilin University, Changchun, Jilin, 130021, China.
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Liu F, Zhang Y, Wang F. Environmental relevant concentrations of triclosan affected developmental toxicity, oxidative stress, and apoptosis in zebrafish embryos. ENVIRONMENTAL TOXICOLOGY 2022; 37:848-857. [PMID: 34981884 DOI: 10.1002/tox.23448] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/16/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
Triclosan (TCS), as a broad-spectrum antibacterial agent, is widely used in various pharmaceutical and personal care products. However, the details of ecological environmental health risks of TCS are not clear. In this study, zebrafish embryos/larval were exposed to environmentally relevant concentrations of TCS to evaluate the developmental toxicity. Four-hour post-fertilization (hpf) zebrafish embryos were exposed to 0, 2, 10, 50, and 250 μg/L TCS until 96 h. The heart beats at 72 hpf were significantly increased in 2 μg/L TCS group, while significantly decreased in 250 μg/L TCS treated group compared with control. The results of acridine orange staining, terminal deoxynucleotide transferase-mediated UTPnick end labeling assay, and detection of mitochondrial membrane potential showed that 50 and 250 μg/L TCS resulted in apoptosis. Meanwhile, reactive oxygen species (ROS) and DNA damage were induced, but SOD activity was significantly decreased in 250 μg/L TCS treated group. In addition, SOD(Mn) and GPx gene mRNA expressions were significantly down-regulated in 50 and 250 μg/L TCS treated groups, while Casp3, Casp9, Puma, Casp8, Apaf1, and Bid genes in 250 μg/L TCS and Mdm2 gene in 50 μg/L treated groups were significantly up-regulated. P53 protein was significantly up-regulated in 250 μg/L TCS treated group. The overall results showed that TCS can cause oxidative stress and result in apoptosis via the involvement of ROS-p53-caspase-dependent apoptotic pathway in zebrafish embryos. The present findings suggest the potential mechanisms of TCS-induced developmental toxicity appears to be the generation of ROS and the consequent triggering of apoptosis genes.
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Affiliation(s)
- Fei Liu
- School of Biological Science, Luoyang Normal University, Luoyang, China
| | - Ying Zhang
- School of Biological Science, Luoyang Normal University, Luoyang, China
| | - Fan Wang
- School of Biological Science, Luoyang Normal University, Luoyang, China
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18
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Wang Y, Chen C, Yang G, Wang X, Wang Q, Weng H, Zhang Z, Qian Y. Combined lethal toxicity, biochemical responses, and gene expression variations induced by tebuconazole, bifenthrin and their mixture in zebrafish (Danio rerio). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 230:113116. [PMID: 34979316 DOI: 10.1016/j.ecoenv.2021.113116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
Pesticides commonly occur as mixtures in an aqueous environment, causing deleterious effects on human health and the environment. However, the mechanism underlying the combined effects on aqueous organisms remains largely unknown, especially at low concentrations. In the current study, we inspected the interactive toxicity of tebuconazole (TEB), a triazole fungicide, and bifenthrin (BIF), a pyrethroid insecticide, to zebrafish (Danio rerio) using various toxicological assays. Our data revealed that the 96 h-LC50 (lethal concentration 50) values of BIF to fish at different life periods (embryonic, larval, juvenile, and adult periods) ranged from 0.013 (0.011-0.016) to 0.41 (0.35-0.48) mg a.i. L-1, which were lower than that of TEB ranging from 1.1 (0.88-1.3) to 4.8 (4.1-5.7) mg a.i. L-1. Combination of TEB and BIF induced synergetic acute toxicity to embryonic fish. Activities of T-SOD, POD, and GST were distinctly altered in most individual and joint administrations. Expressions of 16 genes associated with oxidative stress, cellular apoptosis, immune system, and endocrine system at the mRNA level were evaluated, and the information revealed that embryonic zebrafish were impacted by both individual compounds and their combinations. Six genes (cas9, P53, gr, TRα, IL-8, and cxcl-clc) exhibited greater changes when exposed to pesticide mixtures. Therefore, the joint effects induced by the pesticides at low concentrations should be considered in the risk assessment of mixtures and regulated as priorities for mixture risk management in the aqueous ecosystem. More research is needed to identify the threshold concentrations of the realistic pesticide mixtures above which synergistic interactions occur.
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Affiliation(s)
- Yanhua Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
| | - Chen Chen
- School of Public Health, Shandong University, Jinan 250012, Shandong, China
| | - Guiling Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
| | - Xinquan Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
| | - Qiang Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
| | - Hongbiao Weng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
| | - Zhiheng Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China.
| | - Yongzhong Qian
- Key Laboratory of Agro-Product Quality and Safety of Ministry of Agriculture, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Zhao L, Mu S, Wang W, Gu H. Toxicity evaluation of collagen hydrolysates from chrome shavings and their potential use in the preparation of amino acid fertilizer for crop growth. JOURNAL OF LEATHER SCIENCE AND ENGINEERING 2022. [DOI: 10.1186/s42825-021-00072-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
AbstractResource utilization of chrome shavings (CS) has attracted a lot of attention from scientists and technologists in leather industry. Especially, the collagen hydrolysates extracted from CS are expected to find potential application values in agricultural field. However, there is no biotoxicity analysis of collagen hydrolysates from CS. Herein, the collagen hydrolysates with different molecular weights were produced from CS by three hydrolysis dechroming methods including alkaline hydrolysis, enzymatic hydrolysis and alkaline-enzymatic synergistic hydrolysis, and the optimal hydrolysis process of CS was designed and conducted. To evaluate their toxicity, the three collagen hydrolysates were formulated into a nutrient solution for zebrafish development. The obtained results indicated that the hydrolysates with low concentrations (less than 0.6 mg/mL) were safe and could promote the development for zebrafish embryos. Furthermore, the three collagen hydrolysates were utilized as organic nitrogen sources and formulated into amino acid water-soluble fertilizers (AAWSF) including alkaline type fertilizer (OH), enzymatic type fertilizer (M) and alkaline-enzymatic type fertilizer (OH–M) for the early soilless seeding cultivation of wheat, soybean and rapeseed. It is worth mentioning that the chromium contents in the prepared AAWSF were less than 10 mg/kg, which is far less than the limit value in the standard (China, 50 mg/kg). The growth and development of seedlings (germination rate, plant height, fresh weight of leaves, soluble sugar content and chlorophyll content) were investigated. The corresponding results showed that the growth of seedlings watered with AAWSF was better compared with the other treatments, and the OH–M fertilizer had the best promoting effect on the seedlings growth and development, followed by the M and OH fertilizers. The safe toxicity assessment of the collagen hydrolysates will expand their application scope, and the use of collagen hydrolysates extracted from CS for seedlings growth also provides an effective and reasonable way to deal with the chromium-containing leather solid waste, which is an effective way to realize its resource utilization.
Graphical Abstract
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Wang WQ, Chen HH, Zhao WJ, Fang KM, Sun HJ, Zhu FY. Ecotoxicological assessment of spent battery extract using zebrafish embryotoxicity test: A multi-biomarker approach. CHEMOSPHERE 2022; 287:132120. [PMID: 34523462 DOI: 10.1016/j.chemosphere.2021.132120] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 08/02/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
Water environmental pollution caused by spent batteries is a nonignorable environmental issue. In this study, the early life stage of zebrafish was employed to assess the environmental risk of spent batteries after exposure to 0, 1%, 2%, 5% and 10% spent battery extract for 120 h. Our results clearly indicated that spent battery extract can significantly decrease the survival rate, hatching rate and body length and increase heart rate. Moreover, spent battery extract exposure-induced zebrafish larvae generate oxidative stress and inhibit the mRNA transcriptional levels of heat shock protein (HSP70) and metallothionein (MT) genes. These results showed that the spent batteries not only affected the survival and development performance of zebrafish at an early life stage but also caused oxidative stress and interfered with the detoxification of zebrafish. This study provided novel insight into spent battery induced toxicity in the early life stage of fish.
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Affiliation(s)
- Wen-Qian Wang
- Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua, 321007, China
| | - Hao-Hao Chen
- Medical Molecular Biology Laboratory, School of Medicine, Jinhua Polytechnic, Jinhua, 321007, China.
| | - Wen-Jun Zhao
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, 321004, China
| | - Ke-Ming Fang
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, 321004, China
| | - Hong-Jie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, 321004, China.
| | - Feng-Yun Zhu
- Huayuan Testing Technology Company Limited, Jinhua, 321019, China
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21
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Zhao WJ, Li X, Xu ZQ, Fang KM, Hong HC, Sun HJ, Guan DX, Yu XW. Environmentally relevant concentrations of arsenic induces apoptosis in the early life stage of zebrafish. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 227:112883. [PMID: 34653941 DOI: 10.1016/j.ecoenv.2021.112883] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 10/03/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
Arsenic (As) in the aquatic environment is a considerable environmental issue, previous studies have reported the toxic effects of low concentrations (≤ 150 μg/L) of As on fish. However, limited information is available regarding the impact of low levels of As on apoptosis. To evaluate this, zebrafish embryos were exposed to different concentrations (0, 25, 50, 75, and 150 μg/L) of As (arsenite [AsIII] and arsenate [AsV]) for 120 h. Our results indicated that low concentrations of AsIII exposure significantly inhibited the survival of zebrafish larvae, and significantly increased the transcription of Caspase-9 and Caspase-3, the ratio of Bax/Bcl-2 transcription, and protein levels of Caspase-3. In contrast, AsV decreased the ratios of Bax/Bcl-2 transcription and protein levels, as well as protein levels of Caspase-3. Our data demonstrated that AsIII and AsV exert different toxic effects, AsIII induced apoptosis via the mitochondrial pathway and the extrinsic pathway, while AsV induced apoptosis only via the mitochondrial pathway.
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Affiliation(s)
- Wen-Jun Zhao
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Xiang Li
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Ze-Qiong Xu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Ke-Ming Fang
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Hua-Chang Hong
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Hong-Jie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China; Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Science, Zhejiang University, Hangzhou, Zhejiang 310058, China.
| | - Dong-Xing Guan
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Xin-Wei Yu
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan, Zhejiang 316021, China; College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316021, China.
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22
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Craven CB, Blackstock LKJ, Xie J, Li J, Yuan CG, Li XF. Analytical discovery of water disinfection byproducts of toxicological relevance: highlighting halobenzoquinones. CAN J CHEM 2021. [DOI: 10.1139/cjc-2021-0036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Analytical advancement enables discoveries in water research, and challenges in the identification and determination of a wide range of trace level toxic compounds in water drives the development of new analytical platforms and tools. The identification of toxic disinfection byproducts (DBPs) in disinfected drinking water is an excellent example. Water disinfection is necessary to protect the public from waterborne disease. However, an unintentional consequence is the formation of DBPs resulting from reactions of disinfectants with natural organic matter in source water. To date, regulated DBPs do not account for the increased bladder cancer risk estimated in epidemiological studies. The majority of halogenated DBPs remain unidentified and the discovery of unknown DBPs of toxicological relevance continues to be a major focus of current water research. This review will highlight halobenzoquinones as a class of DBPs that serves as an example of analytical development and toxicological studies. We will feature recent trends and gaps in analytical technologies for identification of unknown DBPs and bioassays for evaluation of the toxicological effects of specific DBPs and their mixtures.
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Affiliation(s)
- Caley B. Craven
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2G3, Canada
- Department of Chemistry, Faculty of Science, University of Alberta, Edmonton, AB T6G 2G3, Canada
| | - Lindsay K. Jmaiff Blackstock
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2G3, Canada
| | - Jiaojiao Xie
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2G3, Canada
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071000, PR China
| | - Jinhua Li
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2G3, Canada
| | - Chun-Gang Yuan
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071000, PR China
| | - Xing-Fang Li
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2G3, Canada
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23
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Zhu M, Lu J, Zhao Y, Guo Z, Hu Y, Liu Y, Zhu C. Photochemical reactions between superoxide ions and 2,4,6-trichlorophenol in atmospheric aqueous environments. CHEMOSPHERE 2021; 279:130537. [PMID: 33862361 DOI: 10.1016/j.chemosphere.2021.130537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/04/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
The superoxide anion radical (O2•-) is an important reactive oxygen species (ROS), and participates in several chemical reactions and biological processes. In this report, O2•- was produced by irradiating riboflavin in an O2-saturated solution by ultraviolet light with a maximum emission at 365 nm. And the contribution of O2•- to 2, 4, 6-trichlorophenol (2, 4, 6-TCP) was investigated by a combination of laser flash photolysis (LFP) and UV light steady irradiation technique. The results of steady-state experiments showed that the photochemical decomposition efficiency of 2, 4, 6-TCP decreased with the increase of the initial concentration of TCP, while the increase of pH and riboflavin concentration promoted the photochemical reaction. The second-order rate constant of the reaction of the superoxide anion radical with 2, 4, 6-TCP phenoxyl radical (TCP•) was (9.9 ± 0.9) × 109 L mol-1 s-1 determined by laser flash photolysis techniques. The dechlorination efficiency was 61.5% after illuminating the mixed solution with UV light for 2 h. The conversion of 2, 4, 6-trichlorophenol was accompanied by the reductive dechlorination process induced by superoxide ions. The main steady products of the photochemical reaction of 2, 4, 6-TCP with O2•- were 2, 6-dichlorophenol (DCP), 2, 6-dichloro-1, 4-benzoquinone (DCQ) and 2, 6-dichlorohydroquinone (DCHQ). The addition process was the preferred process in the total reaction of superoxide ions with 2, 4, 6-TCP phenoxyl radical. These results indicated that the reaction of 2, 4, 6-TCP with O2•- was a potential conversion pathway and contribute to atmospheric aqueous phase chemistry.
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Affiliation(s)
- Mengyu Zhu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Jun Lu
- Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Center of Analysis & Measurement, Hefei University of Technology, Hefei, 230009, PR China
| | - Yijun Zhao
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Zhi Guo
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Yadong Hu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Ying Liu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Chengzhu Zhu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China.
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24
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Li Y, Zhang L, Yang L, Zhang Y, Niu Z. Hydrolysis characteristics and risk assessment of a widely detected emerging drinking water disinfection-by-product-2,6-dichloro-1,4-benzoquinone-in the water environment of Tianjin (China). THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 765:144394. [PMID: 33418327 DOI: 10.1016/j.scitotenv.2020.144394] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 11/29/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
Halobenzoquinones (HBQs) are an emerging class of drinking water disinfection byproducts (DBPs) that have been frequently detected in drinking water and are highly relevant to bladder cancer. Among the studied HBQs, 2,6-dichloro-1,4-benzoquinone (DCBQ) had the highest detection frequency and concentrations in drinking water. However, compared to other countries, the studies on HBQs that are being conducted in China, especially those on HBQs in drinking water, are not sufficient. Therefore, the concentrations of DCBQ in the Tianjin drinking water supply system were investigated in two seasons (winter and summer), and the risk that is posed by DCBQ in drinking water was evaluated for the first time. In addition, since HBQs are prone to hydrolysis in neutral and alkaline environments, identification of the hydrolytic characteristics of DCBQ at various pH values and in the real water environment is essential for better describing the environmental behavior of DCBQ; hence, the hydrolysis characteristics of DCBQ in phosphate buffers with various pH values and in four water samples were also examined in our study. The results demonstrated that DCBQ was widely detected in the drinking water treatment process and distribution systems, and the average concentration in our study (12.0 ng/L) was at a moderately high level compared with the reported concentration of DCBQ in the drinking water distribution networks. The risk quotient (RQ) of DCBQ is equivalent to that of trihalomethanes (THMs); thus, the relatively low concentrations of DCBQ should also be considered. Furthermore, the results demonstrated that the hydrolysis of DCBQ follows first-order reaction kinetics, the reaction rate accelerates as the pH of the phosphate buffer system increases, and the rate of hydrolysis of DCBQ in drinking water is affected not only by the pH but also by other environmental factors, such as the organic matter concentration. Therefore, further investigation is necessary to identify the main factor of DCBQ hydrolysis in real water environments.
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Affiliation(s)
- Yuna Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Lifen Zhang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Lumin Yang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Ying Zhang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Zhiguang Niu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
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25
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Zhang Z, Pan T, Liu C, Shan X, Xu Z, Hong H, Lin H, Chen J, Sun H. Cyclophosphamide induced physiological and biochemical changes in mice with an emphasis on sensitivity analysis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111889. [PMID: 33461014 DOI: 10.1016/j.ecoenv.2020.111889] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/21/2020] [Accepted: 12/31/2020] [Indexed: 06/12/2023]
Abstract
The widespread use of cyclophosphamide (CP) in medical treatment had caused ubiquitous contamination in the environment. To data, many studies have been carried out on the toxic effect of CP. However, among these toxic effects of CP, which are the most sensitive remains unclear. Present study aimed to investigate the toxicity of CP on mice and evaluate the sensitivity of physiological-biochemical parameters upon exposure of mice to CP. Results showed that as compared with the control group, CP caused significant reduction in body weight (p < 0.01), spleen coefficient (p < 0.01), leukocyte density (p < 0.01) and alanine transaminase (ALT) in kidney (p < 0.01); However superoxide dismutase (SOD), malondialdehyde (MDA), ALT in liver and creatinine (Cr) in kidney significantly (p < 0.05) increased. Among the suppressed physiological and biochemical parameters, the sensitivity to CP toxicity was generally ranked as body weight > leukocyte density > ALT in kidney > spleen coefficient; while among the stimulated parameters, the sensitivity was ranked as MDA (liver) > Cr (kidney) > ALT (liver). Overall, the most sensitive parameters to CP toxicity may be associated with growth, immune system and the normal function of liver and kidney.
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Affiliation(s)
- Zhiying Zhang
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Ting Pan
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Chunrong Liu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Xiaoyun Shan
- Jinhua Municipal Central Hospital, Jinhua, China
| | - Zeqiong Xu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Huachang Hong
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China.
| | - Hongjun Lin
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China
| | - Jianrong Chen
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China; Jinhua Municipal Central Hospital, Jinhua, China
| | - Hongjie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, China.
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26
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Zou Y, Wu Y, Wang Q, Wan J, Deng M, Tu W. Comparison of toxicokinetics and toxic effects of PFOS and its novel alternative OBS in zebrafish larvae. CHEMOSPHERE 2021; 265:129116. [PMID: 33279233 DOI: 10.1016/j.chemosphere.2020.129116] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/15/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
Sodium p-perfluorous nonenoxybenzene sulfonate (OBS), a novel alternative to perfluorooctanesulfonate (PFOS), is widely used in industry as a surfactant, firefighting foam and photographic material. The occurrence of OBS in the aquatic environment has been recently reported, but little information is available on its accumulation and toxic effects in aquatic organisms. In this study, zebrafish larvae (3 d post-fertilization) were subjected to OBS (10, 100 μg/L) and PFOS (10 μg/L) for a period of 48 h, followed by a 24 h of depuration period. The bioconcentration and depuration kinetics, oxidative stress and possible molecular mechanisms of OBS and PFOS were investigated in zebrafish larvae. Our results showed that the uptake and depuration of both OBS and PFOS fitted well with a first-order kinetic model. The uptake rate constant of OBS was similar to that of PFOS, but the depuration rate constant was much higher than PFOS with a half-life of 69.7-85 h for OBS and 222.2 h for PFOS. The calculated BCFs of OBS and PFOS were 238.0-242.5 and 644.2, respectively. In our acute toxicity assay, the enhanced expression of Nrf2 protein accompanied by the upregulation of CAT and SOD protein expressions indicated OBS and PFOS induced oxidative stress in zebrafish larvae, and the Nrf2-ARE signaling pathway was involved in this process. Collectively, OBS has a lower bioconcentration potential than PFOS, but its toxic effect on oxidative stress was comparable to PFOS in zebrafish larvae.
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Affiliation(s)
- Yilong Zou
- Key Laboratory of Poyang Lake Environment and Resource Utilization (Ministry of Education), School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, China; Research Institute of Poyang Lake, Jiangxi Academy of Sciences, Nanchang, 330012, China; Jiangxi Water Resources Institute, Nanchang, 330013, China
| | - Yongming Wu
- Research Institute of Poyang Lake, Jiangxi Academy of Sciences, Nanchang, 330012, China
| | - Qiyu Wang
- Research Institute of Poyang Lake, Jiangxi Academy of Sciences, Nanchang, 330012, China
| | - Jinbao Wan
- Key Laboratory of Poyang Lake Environment and Resource Utilization (Ministry of Education), School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, 330031, China.
| | - Mi Deng
- Research Institute of Poyang Lake, Jiangxi Academy of Sciences, Nanchang, 330012, China
| | - Wenqing Tu
- Research Institute of Poyang Lake, Jiangxi Academy of Sciences, Nanchang, 330012, China.
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27
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Zhang J, Zhang C, Du Z, Zhu L, Wang J, Wang J, Li B. Emerging contaminant 1,3,6,8-tetrabromocarbazole induces oxidative damage and apoptosis during the embryonic development of zebrafish (Danio rerio). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140753. [PMID: 32758839 DOI: 10.1016/j.scitotenv.2020.140753] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/26/2020] [Accepted: 07/03/2020] [Indexed: 06/11/2023]
Abstract
Since polyhalogenated carbazoles (PHCs) have been widely detected at high concentrations in multiple environmental media in recent years, the health risk of exposure to these compounds has drawn increasing attention. Most studies have mainly focused on their dioxin-like toxicity, which is induced through the AhR pathway, because PHCs have structures similar to those of polychlorinated dibenzofurans (PCDFs). In addition, most xenobiotic compounds induce oxidative stress in organisms, which is a more common mechanism of toxicity induction. However, there is limited information regarding the oxidative stress and damage induced by PHCs in vivo. The PHC 1,3,6,8-tetrabromocarbazole (1368-TBCZ) is detected at high concentration and frequency. In the present study, the toxic effects (acute toxicity, developmental toxicity, oxidative stress, and apoptosis) induced by 1368-TBCZ at three different concentrations were investigated using zebrafish embryos. It was concluded that the 96 h median lethal concentration (LC50) of 1368-TBCZ for zebrafish embryos was greater than 2.0 mg L-1. The results showed that 1368-TBCZ had little effect on the hatching rate of zebrafish embryos. However, 1368-TBCZ at 0.5 and 2.0 mg L-1 inhibited skeletal and cardiac development. It promoted ROS production, CAT enzyme activity, lipid peroxidation, DNA damage, and apoptosis, even at the lowest dose (0.1 mg L-1). In addition, 1368-TBCZ influenced oxidative stress-related gene expression, upregulating the expression of caspase 3 and p53 at 2.0 mg L-1 and inhibiting the expression of caspase 9, FoxO3b, and Bcl-2/Bax. The present study comprehensively evaluated 1368-TBCZ-induced toxicity in zebrafish, providing valuable data for better evaluation of the potential risks posed by this PHC.
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Affiliation(s)
- Jingwen Zhang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China
| | - Cheng Zhang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China
| | - Zhongkun Du
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China.
| | - Lusheng Zhu
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China.
| | - Jun Wang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China.
| | - Jinhua Wang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China.
| | - Bing Li
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China
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28
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Sun HJ, Zhao WJ, Teng XQ, Shu SP, Li SW, Hong HC, Guan DX. Antioxidant responses and pathological changes in the gill of zebrafish (Danio rerio) after chronic exposure to arsenite at its reference dose. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 200:110743. [PMID: 32464441 DOI: 10.1016/j.ecoenv.2020.110743] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/23/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
Gill, as the organ of fish to contact most directly with xenobiotics, suffered more threat. To evaluate the impact of arsenite (AsIII) on the gill of fish, we measured the antioxidative responses (superoxide dismutase (SOD) and catalase (CAT) activities) and oxidative damage (malondialdehyde (MDA) content), histological changes and mRNA transcriptional responses of zebrafish gill, after exposure to AsIII (0, 10, 50, 100, and 150 μg L-1) solutions for 28 days. We found that AsIII increased the activities of CAT by 46%-87%, decreased the activities of SOD and the contents of MDA by 19% and 21%-32%. Furthermore, CuZnSOD and MnSOD mRNA transcription levels were also inhibited, decreasing by 62%-82% and 70%-77%. Besides, ≥ 100 μg L-1 AsIII also caused histological changes (a loss of mucus and desquamation in the surface of the epithelial cells) on zebrafish gill. These results showed that low concentrations of AsIII influenced biochemical and physiological performances of fish gill, which probably aggravates the toxic effect of AsIII on fish.
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Affiliation(s)
- Hong-Jie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China
| | - Wen-Jun Zhao
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China
| | - Xiao-Qiang Teng
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China
| | - Shui-Ping Shu
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China
| | - Shi-Wei Li
- School of Water Conservancy and Environment, University of Jinan, Jinan, Shandong, 250022, PR China
| | - Hua-Chang Hong
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, PR China.
| | - Dong-Xing Guan
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, PR China.
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29
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Lin H, Dai Q, Zheng L, Hong H, Deng W, Wu F. Radial basis function artificial neural network able to accurately predict disinfection by-product levels in tap water: Taking haloacetic acids as a case study. CHEMOSPHERE 2020; 248:125999. [PMID: 32006834 DOI: 10.1016/j.chemosphere.2020.125999] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/21/2020] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
Control of risks caused by disinfection by-products (DBPs) requires pre-knowledge of their levels in drinking water. In this study, a radial basis function (RBF) artificial neural network (ANN) was proposed to predict the concentrations of haloacetic acids (HAAs, one dominant class of DBPs) in actual distribution systems. To train and verify the RBF ANN, a total of 64 samples taken from a typical region (Jinhua region) in China were characterized in terms of water characteristics (dissolved organic carbon (DOC), ultraviolet absorbance at 254 nm (UVA254), NO2--N level, NH4+-N level, Br- and pH), temperature and the prevalent HAAs concentrations. Compared with multiple linear/log linear regression (MLR) models, predictions done by RBF ANNs showed rather higher regression coefficients and accuracies, indicating the high capability of RBF ANNs to depict complicated and non-linear relationships between HAAs formation and various factors. Meanwhile, it was found that, predictions of HAAs formation done by RBF ANNs were efficient and allowed to further improve the prediction accuracy. This is the first study to systematically explore feasibility of RBF ANNs in prediction of DBPs. Accurate predictions by RBF ANNs provided great potential application of DBPs monitoring in actual distribution system.
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Affiliation(s)
- Hongjun Lin
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Qunyun Dai
- Jinhua Maternal and Child Health Hospital, Jinhua, 321000, PR China
| | - Lili Zheng
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Huachang Hong
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China.
| | - Wenjing Deng
- Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, N.T, Hong Kong.
| | - Fuyong Wu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, PR China
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30
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Zhang C, Zhang J, Zhu L, Du Z, Wang J, Wang J, Li B, Yang Y. Fluoxastrobin-induced effects on acute toxicity, development toxicity, oxidative stress, and DNA damage in Danio rerio embryos. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 715:137069. [PMID: 32041080 DOI: 10.1016/j.scitotenv.2020.137069] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 01/30/2020] [Accepted: 01/31/2020] [Indexed: 06/10/2023]
Abstract
Strobilurin fungicides (SFs), the most commonly used fungicides, pose threats for controlling fungal diseases. The fungicides were monitored in aquatic ecosystems and may have negative effects on nontarget organisms. This project was undertaken to monitor the toxic effects of fluoxastrobin (FLUO) on Danio rerio embryos and to evaluate the SF risks in aquatic ecosystems. The 96-hour median lethal concentration (96 h LC50), hatching rates, and morphological abnormalities were used to analyze acute toxicity and teratogenicity of FLUO to Danio rerio embryos at an FLUO dose of 0.549 mg/L (95% confidence limits: 0.423 to 0.698 mg/L); the results showed that FLUO has high toxicity in embryos that is analogous to the toxicity observed in adult Danio rerio. Fluoxastrobin may lead embryos to delayed hatching at concentrations >0.6 mg/L, and it may lead to teratogenicity (i.e., pericardial edema and spinal curvature). Based on the 96 h LC50 results, the following parameters were evaluated in Danio rerio: development-related indicators (body length and heart rates), reactive oxygen species (ROS) levels, lipid peroxidation (LPO) levels, the levels of three antioxidants, 8-hydroxy-2-deoxyguanosine (8-OHdG), and apoptosis. The results elucidated that FLUO inhibition of spinal and heart development may be induced by oxidative stress. In addition, FLUO induced a notable climb in ROS content, LPO, the activated activity of superoxide dismutase (SOD) and catalase (CAT), and it inhibited glutathione peroxidase (GSH-PX) activity. Fluoxastrobin led to DNA damage (i.e., a notable climb of 8-OHdG contents and apoptotic cells). Collectively, FLUO posed threats to Danio rerio embryos at multiple levels, and this investigation could be a reminder for people to be more judicious in SF-use to avoid or relieve SF toxicity to nontarget organisms.
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Affiliation(s)
- Cheng Zhang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China
| | - Jingwen Zhang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China
| | - Lusheng Zhu
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China.
| | - Zhongkun Du
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China
| | - Jun Wang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China.
| | - Jinhua Wang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China.
| | - Bing Li
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China
| | - Yue Yang
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China.
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31
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Orozco-Hernández JM, Gómez Oliván LM, Heredia-García G, Luja-Mondragón M, Islas-Flores H, SanJuan-Reyes N, Galar-Martínez M, García-Medina S, Dublán-García O. Genotoxic and cytotoxic alterations induced by environmentally-relevant concentrations of amoxicillin in blood cells of Cyprinus carpio. CHEMOSPHERE 2019; 236:124323. [PMID: 31319313 DOI: 10.1016/j.chemosphere.2019.07.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/27/2019] [Accepted: 07/07/2019] [Indexed: 06/10/2023]
Abstract
Amoxicillin (AMX) is a pharmaceutical widely employed in human and veterinary medicine worldwide. Its wide production and use has led to this pharmaceutical being released into the environment in concentrations that range from ng L-1 to μg L-1. Previous studies have demonstrated that this antibiotic generates toxic effects, amongst which alterations to embryonic development and oxidative stress in aquatic organisms, is noteworthy. Nonetheless, it is necessary to characterize the risks that this pharmaceutical represents for species of economic interest such as Cyprinus carpio, in a more precise manner. The aim of this work was to demonstrate if AMX, at environmentally-relevant concentrations, is capable of inducing genotoxic/cytotoxic alterations in C. carpio. In order to evaluate genotoxicity, the comet assay and micronucleus test were used; in order to determine cytotoxic effects, caspase-3 activity and the TUNEL assay were carried out. The results showed that the effects of the biomarkers had their maximum at 72 h; considering the DNA damage in the comet assay, 0.039 μg L-1 resulted in a 29% increase compared to control, and 1.67 μg L-1 caused a 40% increase; micronucleus frequency increased by 205% in C1 and by 311% in C2 when compared to control; compared to control, caspase-3 activity increased 262% in C1 and 787% in C2; for the TUNEL assay, DNA fragmentation increased by 86% in C1 and 120% in C2 compared to control. The results showed that environmentally-relevant concentrations, AMX was capable of generating DNA damage and cytotoxic effects in blood cells of the common carp.
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Affiliation(s)
- José Manuel Orozco-Hernández
- Laboratorio de Toxicología Ambiental de la Facultad de Química de la Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n, Colonia Universidad, CP, 50120, Toluca, Estado de México, Mexico
| | - Leobardo Manuel Gómez Oliván
- Laboratorio de Toxicología Ambiental de la Facultad de Química de la Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n, Colonia Universidad, CP, 50120, Toluca, Estado de México, Mexico.
| | - Gerardo Heredia-García
- Laboratorio de Toxicología Ambiental de la Facultad de Química de la Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n, Colonia Universidad, CP, 50120, Toluca, Estado de México, Mexico
| | - Marlenee Luja-Mondragón
- Laboratorio de Toxicología Ambiental de la Facultad de Química de la Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n, Colonia Universidad, CP, 50120, Toluca, Estado de México, Mexico
| | - Hariz Islas-Flores
- Laboratorio de Toxicología Ambiental de la Facultad de Química de la Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n, Colonia Universidad, CP, 50120, Toluca, Estado de México, Mexico
| | - Nely SanJuan-Reyes
- Laboratorio de Toxicología Acuática del Departamento de Farmacia de la Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Avenida Wilfrido Massieu y Manuel Stampa, Colonia Industrial Vallejo, CDMX, CP, 07700, Mexico
| | - Marcela Galar-Martínez
- Laboratorio de Toxicología Acuática del Departamento de Farmacia de la Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Avenida Wilfrido Massieu y Manuel Stampa, Colonia Industrial Vallejo, CDMX, CP, 07700, Mexico
| | - Sandra García-Medina
- Laboratorio de Toxicología Acuática del Departamento de Farmacia de la Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Avenida Wilfrido Massieu y Manuel Stampa, Colonia Industrial Vallejo, CDMX, CP, 07700, Mexico
| | - Octavio Dublán-García
- Laboratorio de Toxicología Ambiental de la Facultad de Química de la Universidad Autónoma del Estado de México, Paseo Colón intersección Paseo Tollocan s/n, Colonia Universidad, CP, 50120, Toluca, Estado de México, Mexico
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32
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Sun HJ, Zhang JY, Wang Q, Zhu E, Chen W, Lin H, Chen J, Hong H. Environmentally relevant concentrations of arsenite induces developmental toxicity and oxidative responses in the early life stage of zebrafish. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:113022. [PMID: 31408795 DOI: 10.1016/j.envpol.2019.113022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 07/15/2019] [Accepted: 08/04/2019] [Indexed: 06/10/2023]
Abstract
Arsenic (As) present in water is a nonignorable environmental issue, even at low concentrations (≤150 μg L-1). To evaluate the toxic effect of low concentrations of As, zebrafish at early life stage were exposed to 0, 25, 50, 75, or 150 μg L-1 AsIII for 120 h. Our results indicated that low concentration of AsIII decreased zebrafish larvae's survival rate to 85%, 89% and 86% at 50, 75 and 150 μg L-1. Furthermore, low concentrations of AsIII exposure caused oxidative stress (elevated superoxide dismutase (SOD) activity and influenced the mRNA transcriptional levels of Cu/ZnSOD and MnSOD) and damage (increased malondialdehyde levels). Meanwhile, zebrafish larvae regulated the mRNA transcription of metallothionein and heat shock protein 70 to alleviate toxicity caused by AsIII. These results revealed lower concentrations (≤150 μg L-1) of AsIII had a detriment effect on the survival of fish at early life stage, moreover, oxidative stress caused by AsIII posed potential risk for the zebrafish. This study provides novel insight into low concentration AsIII-induced toxicity in zebrafish.
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Affiliation(s)
- Hong-Jie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China.
| | - Jing-Ying Zhang
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Qiang Wang
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Engao Zhu
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Wenrong Chen
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Hongjun Lin
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Jianrong Chen
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Huachang Hong
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
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Zhang Y, Sun HJ, Zhang JY, Ndayambaje E, Lin H, Chen J, Hong H. Chronic exposure to dichloroacetamide induces biochemical and histopathological changes in the gills of zebrafish. ENVIRONMENTAL TOXICOLOGY 2019; 34:781-787. [PMID: 30884105 DOI: 10.1002/tox.22744] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/15/2019] [Accepted: 02/17/2019] [Indexed: 05/15/2023]
Abstract
To evaluate the impact of DCAcAm on zebrafish gill, we measure the responses of antioxidant enzyme (superoxide dismutase, SOD), lipid peroxidation (malondialdehyde, MDA), ATPase (Na+ /K+ -ATPase and Ca2+ /Mg2+ -ATP) and histopathological changes of gill in adult zebrafish, after exposed to different concentrations of DCAcAm (0, 1, 10, 100, and 1000 μg L-1 ) for 30 days. Results indicated that DCAcAm first increased and then decreased SOD activity, and DCAcAm also lowered the activities of Na+ /K+ -ATPase and Ca2+ /Mg2+ -ATPase. These results indicated that high affinity of DCAcAm probably be a main factor, which can damage the structures of enzymes, thereby inhibiting the SOD and ATPase activities. Besides, histopathological investigation results also manifested that chronic exposure to DCAcAm can damage the gill tissues, disrupting the normal function of gills. We conclude that chronic exposure to DCAcAm was harmful to organisms, not only influence gill function, but also further cause damage on the gill tissues.
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Affiliation(s)
- Yu Zhang
- College of Geography and Environmental Science, Zhejiang Normal University, Zhejiang, China
| | - Hong-Jie Sun
- College of Geography and Environmental Science, Zhejiang Normal University, Zhejiang, China
| | - Jing-Ying Zhang
- College of Geography and Environmental Science, Zhejiang Normal University, Zhejiang, China
| | - Emmanuel Ndayambaje
- College of Geography and Environmental Science, Zhejiang Normal University, Zhejiang, China
| | - Hongjun Lin
- College of Geography and Environmental Science, Zhejiang Normal University, Zhejiang, China
| | - Jianrong Chen
- College of Geography and Environmental Science, Zhejiang Normal University, Zhejiang, China
| | - Huachang Hong
- College of Geography and Environmental Science, Zhejiang Normal University, Zhejiang, China
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