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Özokan G, Bilginer A, Mızrak Z, Işıkoğlu S, Beler M, Ünal İ, Cansız D, Alturfan AA, Emekli-Alturfan E. Comparison of the cytotoxicity and zebrafish embryo toxicity of insect repellent ingredients: p-Menthane-3,8-diol synthesized by green chemistry from Eucalyptus citriodora and N,N-diethyl-meta-toluamide. Drug Chem Toxicol 2024:1-12. [PMID: 38738628 DOI: 10.1080/01480545.2024.2350664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 04/27/2024] [Indexed: 05/14/2024]
Abstract
Bio-sourced insect repellents are becoming more popular due to their safer applications. Known for its strong fly-repellent property, Cis, trans-para-menthane-3,8-diol (PMD) is the main component of the lemon eucalyptus essential oil and is synthesized from citronellal. In April 2005, US Centers for Disease Control approved two fly repellents that do not contain N,N-diethyl-meta-toluamide (DEET), including PMD. Due to the intentional and pervasive human exposure caused by DEET as insect repellent, concerns have been raised about its toxicological profile and potential harm to people. We hypothesized PMD would have a different toxicological profile than DEET. We synthesized PMD from Eucalyptus citriodora using green chemistry methods and analyzed its structures by 1H-NMR,13C-NMR, and GC/MS spectral methods. We used MTS assay to determine the percentage inhibition of PMD and DEET on keratinocyte (human epidermal keratinocyte [HaCaT]) cells. The xCelligence system was used and followed at real time. Effects of PMD and DEET on zebrafish embryo development were monitored and levels of lipid peroxidation, glutathione-S-transferase (GST), superoxide dismutase (SOD), and acetylcholinesterase (AchE) were evaluated at 72 h post-fertilization using spectrophotometric methods. Our results showed that while DEET inhibited human keratinocyte cell growth, while imporved cell viability and proliferation was exposed in PMD exposed group. In zebrafish embryos, PMD was less toxic in terms of development, oxidant-antioxidant status, and AChE activities than DEET. Based on these results we suggest an efficient method using green chemistry for the synthesis of PMD, which is found to be less toxic in zebrafish embryos and human keratinocyte cells.
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Affiliation(s)
- Gökhan Özokan
- BioArge Laboratories, Yıldız Technical University Technocity, Istanbul, Turkey
| | - Abdulkerim Bilginer
- BioArge Laboratories, Yıldız Technical University Technocity, Istanbul, Turkey
| | - Zülal Mızrak
- Department of Biochemistry, Institute of Health Sciences, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Semanur Işıkoğlu
- Department of Biochemistry, Institute of Health Sciences, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Merih Beler
- Department of Biochemistry, Institute of Health Sciences, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - İsmail Ünal
- Medical Biochemistry Department, Faculty of Medicine, Medipol University, Istanbul, Turkey
| | - Derya Cansız
- Medical Biochemistry Department, Faculty of Medicine, Medipol University, Istanbul, Turkey
| | - A Ata Alturfan
- Department of Biochemistry, Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Ebru Emekli-Alturfan
- Department of Basic Medical Sciences, Faculty of Dentistry, Marmara University, Istanbul, Turkey
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Severo ES, Marins AT, Ames J, Nunes MEM, Loro VL. Embryonic Development Effects of Basagran® Herbicide in Danio Rerio: A Preliminary Study. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 111:62. [PMID: 37903886 DOI: 10.1007/s00128-023-03817-2] [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: 07/03/2023] [Accepted: 09/29/2023] [Indexed: 11/01/2023]
Abstract
Bentazon (Basagran®) belongs to the chemical group of benzothiadiazinones. Thus, this study aimed to estimate the influence of herbicide bentazon (3 µg.L-1, 6 µg.L-1, 12 µg.L-1, 300 µg.L-1) in Danio rerio embryos development. The study tested environmental relevant concentrations of bentazon as well as the limit established for drinking water (300 µg.L-1) in Brazil. We performed behavioral and developmental analyzes during 96 h of exposure. The bentazon measurements after experimental period showed reduction ranging from 5.0 to 18.93% between exposed groups. Our results showed significant differences in the heart rate, which was significantly higher in groups exposed to all bentazon concentrations compared to control groups. The absence of alterations in the behavioral parameters showing that the herbicide bentazon at the concentrations tested had few adverse effects on the development and behavior of the Danio rerio embryos. Considering the toxic point of view, there is a chance that bentazon acts together with other environmental contaminants as an additive or synergistic way.
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Affiliation(s)
- Eduardo Stringini Severo
- Programa de Pós-Graduação em Biodiversidade Animal, Santa Maria, Brazil
- Laboratório de Toxicologia Aquática, Programa de Pós-Graduação em Bioquímica toxicológica, LABTAQ, Universidade Federal de Santa Maria, Santa Maria, RS, CEP: 97105-900, Brazil
| | - Aline Teixeira Marins
- Programa de Pós-Graduação em Biodiversidade Animal, Santa Maria, Brazil
- Laboratório de Toxicologia Aquática, Programa de Pós-Graduação em Bioquímica toxicológica, LABTAQ, Universidade Federal de Santa Maria, Santa Maria, RS, CEP: 97105-900, Brazil
| | - Jaíne Ames
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Santa Maria, Brazil
- Laboratório de Toxicologia Aquática, Programa de Pós-Graduação em Bioquímica toxicológica, LABTAQ, Universidade Federal de Santa Maria, Santa Maria, RS, CEP: 97105-900, Brazil
| | - Mauro Eugênio Medina Nunes
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Santa Maria, Brazil
- Laboratório de Toxicologia Aquática, Programa de Pós-Graduação em Bioquímica toxicológica, LABTAQ, Universidade Federal de Santa Maria, Santa Maria, RS, CEP: 97105-900, Brazil
| | - Vania Lucia Loro
- Programa de Pós-Graduação em Biodiversidade Animal, Santa Maria, Brazil.
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Santa Maria, Brazil.
- Laboratório de Toxicologia Aquática, Programa de Pós-Graduação em Bioquímica toxicológica, LABTAQ, Universidade Federal de Santa Maria, Santa Maria, RS, CEP: 97105-900, Brazil.
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Wang L, Wang Y, Chen M, Qin Y, Zhou Y. Hydrophobic deep eutectic solvent based dispersive liquid–liquid microextraction for the preconcentration and HPLC analysis of five rice paddy herbicides in water samples. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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4
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Peris A, Barbieri MV, Postigo C, Rambla-Alegre M, López de Alda M, Eljarrat E. Pesticides in sediments of the Ebro River Delta cultivated area (NE Spain): Occurrence and risk assessment for aquatic organisms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 305:119239. [PMID: 35398158 DOI: 10.1016/j.envpol.2022.119239] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
Intense agricultural activities are performed in the Ebro River Delta (NE Spain) with extensive use of pesticides. Medium to highly polar pesticides have not been studied intensively in sediments despite its larger use in the recent years. This work aimed at assessing the occurrence of 69 pesticides, including medium to highly polar compounds, in sediments collected from drainage and irrigation channels of the Ebro River Delta during the main rice growing season. In addition, an environmental risk assessment was performed to evaluate the potential adverse effects to sediment-dwelling organisms with the risk quotient approach. A total of 24 pesticides were detected in sediments with bentazone and cypermethrin exhibiting high detection frequencies (79%) as well as high mean concentration levels (61.9 and 81.8 ng g-1 dw, respectively). Overall, the Alfacs bay, in the South of the delta, presented higher pesticide contamination than the Fangar bay, in the North. A similar pesticide distribution profile was observed in both bays, with oxadiazoles, organochlorines, pyrethroids, benzothiazinones and organophosphates as major, predominant classes. The presence of oxadiazon, pendimethalin and thifensulfuron methyl in the sediments may pose a moderate risk to sediment-dwelling organisms while bentazone, chlorpyrifos, and cypermethrin exhibited a potential high risk. Thus, the importance of the inclusion of medium to highly polar pesticides in the analysis of sediments is emphasized since some polar pesticides such as bentazone, imidacloprid, and thifensulfuron-methyl have been detected at concentrations that may pose a risk to aquatic organisms. Moreover, the co-occurrence of pesticides may potentially pose a high risk to sediment-dwelling organisms in 13 out of the 14 investigated locations. Finally, it could be concluded that the risk derived from the presence of pesticides in sediments must be assessed since some pesticides not detected at concerning levels in water, may pose a moderate/high risk in the sediments.
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Affiliation(s)
- A Peris
- Dep. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain
| | - M V Barbieri
- Dep. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain
| | - C Postigo
- Dep. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain
| | - M Rambla-Alegre
- Institute of Agriculture and Food Research and Technology (IRTA), Ctra. Poble Nou, Km 5.5, Sant Carles de La Ràpita, Tarragona, 43540, Spain
| | - M López de Alda
- Dep. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain
| | - E Eljarrat
- Dep. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain.
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Kuižová A, Přikryl M, Procházka M, Kočišová E. Drop coating deposition Raman (DCDR) spectroscopy of contaminants. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 262:120109. [PMID: 34214739 DOI: 10.1016/j.saa.2021.120109] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 06/02/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
Raman spectroscopy is a useful technique to identify small organic molecules, including contaminants. The drop coating deposition Raman (DCDR) is more sensitive than conventional Raman spectroscopy from solution. It is based on Raman measurement from a small drop dried on a hydrophobic surface where studied molecules are preconcentrated. In this paper, DCDR spectra of dried drops of selected contaminants (food contaminant melamine, fungicide thiram, herbicides bentazon and picloram) on the hydrophobic substrate were acquired for the first time, whereas Raman spectra from stock solutions were impossible to obtain under the same experimental conditions. The lowest DCDR detected concentrations were determined as 6.4 µM, 0.31 µM, 20 µM and 2 µM in deposited concentrations for melamine, thiram, bentazon and picloram, respectively. Therefore, DCDR spectroscopy can serve to detect these molecules in concentrations relevant in food/groundwater contaminations.
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Affiliation(s)
- Alžbeta Kuižová
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
| | - Mikuláš Přikryl
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
| | - Marek Procházka
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
| | - Eva Kočišová
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic.
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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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Gomes S, Carvalho A, Castro C, Cadena P. Efeitos tóxicos dos sedimentos do estuário do rio Capibaribe em embriões de zebrafish (Danio rerio). ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO O presente estudo utilizou embriões de Danio rerio expostos aos elutriatos dos sedimentos estuarinos do rio Capibaribe, dos períodos chuvoso e seco, e analisou os efeitos letais, teratogênicos, bem como a frequência cardíaca. Os testes de toxicidade com os embriões seguiram as diretrizes da OECD 236. Mediante os resultados obtidos, a frequência cardíaca e a teratogenicidade foram os efeitos mais observados nos animais quando submetidos às amostras. Entre os efeitos teratogênicos, o retardo geral no desenvolvimento dos embriões foi o mais frequente durante as análises. Tais efeitos tóxicos se modificaram entre os pontos e entre os períodos de coleta. Essa variação de toxicidade pode estar relacionada à diversidade de atividades realizadas no entorno desse estuário, a influência do regime de chuvas, marés e correntes, indicando que a análise dos efeitos subletais e da teratogenicidade em embriões de D. rerio constitui bom parâmetro para avaliações de toxicidade de amostras ambientais.
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Affiliation(s)
- S.S. Gomes
- Universidade Federal Rural de Pernambuco, Brazil
| | | | | | - P.G. Cadena
- Universidade Federal Rural de Pernambuco, Brazil
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Bertotto LB, Catron TR, Tal T. Exploring interactions between xenobiotics, microbiota, and neurotoxicity in zebrafish. Neurotoxicology 2019; 76:235-244. [PMID: 31783042 DOI: 10.1016/j.neuro.2019.11.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 11/18/2019] [Accepted: 11/18/2019] [Indexed: 12/18/2022]
Abstract
Susceptibility to xenobiotic exposures is variable. One factor that might account for this is the microbiome, which encompasses all microorganisms, their encoded genes, and associated functions that colonize a host organism. Microbiota harbor the capacity to affect the toxicokinetics and toxicodynamics of xenobiotic exposures. The neurotoxicological effects of environmental chemicals may be modified by intestinal microbes via the microbiota-gut-brain axis. This is a complex, bi-directional signaling pathway between intestinal microbes and the host nervous system. As a model organism, zebrafish are extremely well-placed to illuminate mechanisms by which microbiota modify the developmental neurotoxicity of environmental chemicals. The goal of this review article is to examine the microbiota-gut-brain axis in a toxicological context, specifically focusing on the strengths and weaknesses of the zebrafish model for the investigation of interactions between xenobiotic agents and host-associated microbes. Previous studies describing the relationship between intestinal microbes and host neurodevelopment will be discussed. From a neurotoxicological perspective, studies utilizing zebrafish to assess links between neurotoxicological outcomes and the microbiome are emphasized. Overall, there are major gaps in our understanding the mechanisms by which microbiota interact with xenobiotics to cause or modify host neurotoxicity. In this review, we demonstrate that zebrafish are an ideal model system for studying the complex relationship between chemical exposures, microorganisms, and host neurotoxicological outcomes.
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Affiliation(s)
- Luísa B Bertotto
- Oak Ridge Institute for Science and Education, US EPA, ORD, NHEERL, ISTD, United States
| | - Tara R Catron
- Oak Ridge Institute for Science and Education, US EPA, ORD, NHEERL, ISTD, United States
| | - Tamara Tal
- US EPA ORD, NHEERL, ISTD, United States.
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Radwan D, Mohamed A, Fayez K, Abdelrahman A. Oxidative stress caused by Basagran ® herbicide is altered by salicylic acid treatments in peanut plants. Heliyon 2019; 5:e01791. [PMID: 31193712 PMCID: PMC6538979 DOI: 10.1016/j.heliyon.2019.e01791] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/27/2019] [Accepted: 05/20/2019] [Indexed: 12/01/2022] Open
Abstract
The present work was to study a protective role of salicylic acid (SA) on oxidative stress caused by Basagran® herbicide application. Two peanut cultivars (Arachis hypogaea cv. Giza 5 and Giza 6) with different sensitivities to the herbicide were monitored for their antioxidant responses to Basagran® and/or SA treatments. Two weeks after treatment, Basagran® lowered leaf pigments (Chlorophyll a, Chlorophyll b and total Carotenoids) but increased hydrogen peroxide (H2O2) and malondialdehyde (MDA) contents indicating occurrence of lipid peroxidation and oxidative stress. Salicylic acid applied prior to low dose Basagran® lowered H2O2 and MDA contents in both G5 and G6. Except for SOD which is highly stimulated, POD, CAT and APX activities showed slight changes compared to control in leaves treated with Basagran® ± SA. The extracts tested by DPPH showed increase in total antioxidant activity by 4%-7% in SA + Basagran® treated leaves compared to control. The increased total antioxidant activity was related to the accumulation of amounts of phenolics as a protective action stimulated by SA. Alterations of antioxidant enzymatic system, accumulation of phenolics, increasing the total antioxidant activity by SA provide an evidence of protective action of SA in Basagran® detoxification.
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Affiliation(s)
- D.E.M. Radwan
- Botany Department, Faculty of Science, Sohag University, Sohag, 82524, Egypt
- Biology Department, Faculty of Science, Jazan University, Jazan, Saudi Arabia
| | - A.K. Mohamed
- Botany Department, Faculty of Science, Sohag University, Sohag, 82524, Egypt
| | - K.A. Fayez
- Botany Department, Faculty of Science, Sohag University, Sohag, 82524, Egypt
| | - A.M. Abdelrahman
- Botany Department, Faculty of Science, Sohag University, Sohag, 82524, Egypt
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Sant KE, Timme-Laragy AR. Zebrafish as a Model for Toxicological Perturbation of Yolk and Nutrition in the Early Embryo. Curr Environ Health Rep 2019; 5:125-133. [PMID: 29417450 DOI: 10.1007/s40572-018-0183-2] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
PURPOSE OF REVIEW Developmental toxicity assessments often focus on structural outcomes and overlook subtle metabolic differences which occur during the early embryonic period. Deviant embryonic nutrition can result in later-life disease, including diabetes, obesity, and cardiovascular disease. Prior to placenta-mediated nutrient exchange, the human embryo requires maternally supplied nutritional substrates for growth, called yolk. Here, we compare the biology of the human and zebrafish yolk and review examples of toxicant-mediated perturbation of yolk defects, composition, and utilization. RECENT FINDINGS Zebrafish embryos, like human embryos, have a protruding yolk sac that serves as a nutritional cache. Aberrant yolk morphology is a common qualitative finding in fish embryotoxicity studies, but quantitative assessment and characterization provides an opportunity to uncover mechanistic targets of toxicant effects on embryonic nutrition. The zebrafish and the study of its yolk sac is an excellent model for uncovering toxicant disruptions to early embryonic nutrition and has potential to discover mechanistic insights into the developmental origins of health and disease.
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Affiliation(s)
- Karilyn E Sant
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Goessman 171, 686 N Pleasant St, Amherst, MA, 01003, USA
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Goessman 171, 686 N Pleasant St, Amherst, MA, 01003, USA.
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Guelfi DRV, Brillas E, Gozzi F, Machulek A, de Oliveira SC, Sirés I. Influence of electrolysis conditions on the treatment of herbicide bentazon using artificial UVA radiation and sunlight. Identification of oxidation products. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 231:213-221. [PMID: 30342334 DOI: 10.1016/j.jenvman.2018.10.029] [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: 08/08/2018] [Revised: 10/06/2018] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
The main objective of this work is to demonstrate the viability of solar photoelectro-Fenton (SPEF) process to degrade pesticides in urban wastewater matrix, selecting the herbicide bentazon as a model molecule. In order to provide a correct assessment of the role of the different oxidants and catalysts involved, bentazon was comparatively treated by anodic oxidation with electrogenerated H2O2 (AO-H2O2), electro-Fenton (EF) and UVA-assisted EF (i.e., PEF) processes as well, either in sulfate or chloride media. Trials were made in a stirred tank reactor with an air-diffusion cathode and a boron-doped diamond (BDD), RuO2-based or Pt anode. In chlorinated matrices, the herbicide disappeared more rapidly using a RuO2-based anode because of the generated active chlorine. The best mineralization performance was always obtained using BDD due to its higher oxidation power, which allowed the complete destruction of refractory chloroderivatives. A concentration of 0.50 mM Fe2+ was found optimal to catalyze Fenton's reaction, largely enhancing the mineralization process under the action of OH. Among photo-assisted treatments, sunlight was proven superior to a UVA lamp to promote the photolysis of intermediates, owing to its greater UV irradiance and contribution of visible photons, although PEF also allowed achieving a large mineralization. In all cases, bentazon decay obeyed a pseudo-first-order kinetics. SPEF treatment in urban wastewater using BDD at only 16.6 mA cm-2 yielded 63.2% mineralization. A thorough, original reaction pathway for bentazon degradation is proposed, including seven non-chlorinated aromatics, sixteen chloroaromatics and two chloroaliphatics identified by GC-MS, most of them not previously reported in literature. Ion-exclusion HPLC allowed the detection of seven short-chain linear carboxylic acids.
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Affiliation(s)
- Diego R V Guelfi
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Fábio Gozzi
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil
| | - Amílcar Machulek
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil
| | - Silvio C de Oliveira
- Instituto de Química (INQUI), Universidade Federal de Mato Grosso do Sul, 549, Av. Senador Filinto Muller 1555, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
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Zhang Y, Liu M, Liu J, Wang X, Wang C, Ai W, Chen S, Wang H. Combined toxicity of triclosan, 2,4-dichlorophenol and 2,4,6-trichlorophenol to zebrafish (Danio rerio). ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 57:9-18. [PMID: 29169085 DOI: 10.1016/j.etap.2017.11.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 11/14/2017] [Indexed: 05/10/2023]
Abstract
Triclosan (TCS), 2,4,6-trichlorophenol (2,4,6-TCP) and 2,4-dichlorophenol (2,4-DCP) are the most prevalent chlorinated phenolic pollutants in aquatic environments. Our results showed LC50 and EC50 values of 0.51, 1.11, 2.45mg/L, and 0.36, 0.74, 1.53mg/L for TCS, 2,4,6-TCP and 2,4-DCP, respectively, to 120hpf zebrafish. The highest TCSD (the mixture of TCS, 2,4,6-TCP and 2,4-DCP) toxicity was observed at a TCS:2,4,6-TCP:2,4-DCP concentration ratio of 1:2:4. LC50 and EC50 values of TCSD mixtures for 120-hpf zebrafish were 2.28 and 1.16mg/L, respectively. Two toxicity assessment methods (Toxic Unit and Mixture Toxicity Index) indicated that TCSD interactions produced partly additive toxicity. TCSD exposure decreased zebrafish hatching rate and led to a series of malformations. Following alkaline phosphatase staining, a large area of vascular ablation was observed with almost complete disappearance of vascular branches and a smaller coverage range. Prominent reddening of the yolk sac and visceral mass after oil red O staining implied that TCSD exposure severely affected fat metabolism. Following acridine orange staining, cell death occurred in eyes while high TCSD concentrations (0.84mg/L) induced cardiovascular circulation dysfunction. Alcian blue staining increased the α angle between Meckel's cartilages and β angle between two ceratobranchial. Basihyal and palatoquadrate became shorter and developmental abnormality or defects occurred in the fifth ceratobranchial. Overall, these results provide a theoretical basis for systematically evaluating the combined toxicity of the prevalent chlorinated phenolic pollutants in real-world aquatic environments.
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Affiliation(s)
- Yuhuan Zhang
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Mi Liu
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Jinfeng Liu
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Xuedong Wang
- Key Laboratory of Watershed Sciences and Health of Zhejiang Province, Wenzhou Medical University, Wenzhou 325035, China
| | - Caihong Wang
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Weiming Ai
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Shaobo Chen
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Huili Wang
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China.
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Ding L, Zang L, Zhang Y, Zhang Y, Wang X, Ai W, Ding N, Wang H. Joint toxicity of fluoroquinolone and tetracycline antibiotics to zebrafish ( Danio rerio) based on biochemical biomarkers and histopathological observation. J Toxicol Sci 2017; 42:267-280. [DOI: 10.2131/jts.42.267] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Lihe Ding
- School of Physical Education and Sport Sciences, Wenzhou Medical University, China
| | - Luxiu Zang
- College of Life Sciences, Wenzhou Medical University, China
| | - Yuna Zhang
- College of Life Sciences, Wenzhou Medical University, China
| | - Yuhuan Zhang
- College of Life Sciences, Wenzhou Medical University, China
| | - Xuedong Wang
- College of Life Sciences, Wenzhou Medical University, China
| | - Weiming Ai
- College of Life Sciences, Wenzhou Medical University, China
| | - Nani Ding
- College of Life Sciences, Wenzhou Medical University, China
| | - Huili Wang
- College of Life Sciences, Wenzhou Medical University, China
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