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Yang YJ, Zhu MJ. Influences of bisphenol A on hydrogen production from food waste by thermophilic dark fermentation. ENVIRONMENTAL RESEARCH 2024; 260:119625. [PMID: 39019138 DOI: 10.1016/j.envres.2024.119625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 06/28/2024] [Accepted: 07/14/2024] [Indexed: 07/19/2024]
Abstract
The extensive use of plastic products in food packaging and daily life makes them inevitably enter the treatment process of food waste (FW). Plasticizer as a new pollutant is threatening the dark fermentation of FW. Our study showed that bisphenol A (BPA) at > 250 mg/L had a significant inhibition on hydrogen production from FW by thermophilic dark fermentation. The endogenous ATP content and lactate dehydrogenase (LDH) release showed that high level of BPA not only inhibited the growth of hydrogen-producing consortium, but also led to cell death. In addition, BPA mainly affects the hydrogen-producing consortium by reducing cell membrane fluidity, damaging cell membrane integrity and reducing cell membrane potential, resulting in cell death. This study provides some new insights into the mechanism of the effect of BPA on hydrogen production from FW by thermophilic dark fermentation, and lays the foundation on the utilization of FW.
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Affiliation(s)
- Yong-Jun Yang
- School of Biology and Biological Engineering, Guangdong Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu, Guangzhou, 510006, China
| | - Ming-Jun Zhu
- School of Biology and Biological Engineering, Guangdong Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu, Guangzhou, 510006, China; The Key Laboratory of Biological Resources and Ecology of Pamirs Plateau in Xinjiang Uygur Autonomous Region, The Key Laboratory of Ecology and Biological Resources in Yarkand Oasis at Colleges & Universities Under the Department of Education of Xinjiang Uygur Autonomous Region, College of Life and Geographic Sciences, Kashi University, Kashi, 844006, China.
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2
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Ogunwole GA, Adeyemi JA, Saliu JK, Olorundare KE. A computational analysis of the molecular mechanisms underlying the effects of ibuprofen and dibutyl phthalate on gene expression in fish. Heliyon 2024; 10:e31880. [PMID: 38845962 PMCID: PMC11153241 DOI: 10.1016/j.heliyon.2024.e31880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/17/2024] [Accepted: 05/23/2024] [Indexed: 06/09/2024] Open
Abstract
The impact of emerging pollutants such as ibuprofen and dibutyl phthalate on aquatic species is a growing concern and the need for proper assessment and evaluation of these toxicants is imperative. The objective of this study was to examine the toxicogenomic impacts of ibuprofen and dibutyl phthalate on Clarias gariepinus, a widely distributed African catfish species. Results showed that exposure to the test compounds caused significant changes in gene expression, including upregulation of growth hormone, interleukin, melatonin receptors, 17β-Hydroxysteroid Dehydrogenase, heat shock protein, doublesex, and mab-3 related transcription factor. On the other hand, expression of forkhead Box Protein L2 and cytochrome P450 was downregulated, revealing a potential to induce female to male sex reversal. The binding affinities and hydrophobic interactions of the test compounds with the reference genes were also studied, showing that ibuprofen had the lowest binding energy and the highest affinity for the docked genes. Both compounds revealed a mutual molecular interaction with amino acids residues within the catalytic cavity of the docked genes. These results provide new insights into the toxic effects of ibuprofen and dibutyl phthalate on Clarias gariepinus, contributing to a better understanding of the environmental impact of these pollutants.
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Affiliation(s)
- Germaine Akinola Ogunwole
- Department of Biology, School of Science, Federal University of Technology, Akure. P.M.B 704, Ondo, Nigeria
| | - Joseph Adewuyi Adeyemi
- Department of Biology, School of Science, Federal University of Technology, Akure. P.M.B 704, Ondo, Nigeria
| | - Joseph Kayode Saliu
- Department of Zoology, Faculty of Science, University of Lagos, Akoka, Lagos, Nigeria
| | - Kayode Emmanuel Olorundare
- Department of Biology, School of Science, Federal University of Technology, Akure. P.M.B 704, Ondo, Nigeria
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3
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Song J, Huang F, Ma K, Ding R, Tan K, Lv D, Soyano K, Zhao K. Bifenthrin induces changes in clinical poisoning symptoms, oxidative stress, DNA damage, histological characteristics, and transcriptome in Chinese giant salamander (Andrias davidianus) larvae. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172041. [PMID: 38554955 DOI: 10.1016/j.scitotenv.2024.172041] [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: 12/05/2023] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/02/2024]
Abstract
Bifenthrin (BF) is a broad-spectrum insecticide that has gained widespread use due to its high effectiveness. However, there is limited research on the potential toxic effects of bifenthrin pollution on amphibians. This study aimed to investigate the 50 % lethal concentration (LC50) and safety concentration of Chinese giant salamanders (CGS) exposed to BF (at 0, 6.25,12.5,25 and 50 μg/L BF) for 96 h. Subsequently, CGS were exposed to BF (at 0, 0.04, and 4 μg/L BF) for one week to investigate its toxic effects. Clinical poisoning symptoms, liver pathology, oxidative stress factors, DNA damage, and transcriptome differences were observed and analyzed. The results indicate that exposure to BF at 4 μg/L significantly decreased the adenosine-triphosphate (ATP), superoxide dismutase (SOD), glutathione (GSH), and catalase (CAT) contents in the brain, liver, and kidney of CGS. Additionally, the study found that the malondialdehyde (MDA), reactive oxygen species (ROS), and 8-hydroxydeoxyguanosine (8-OHdG) contents were increased. The liver tissue exhibited significant inflammatory reactions and structural malformations. RNA-seq analysis of the liver showed that BF caused abnormal antioxidant indices of CGS. This affected molecular function genes such as catalytic activity, ATP-dependent activity, metabolic processes, signaling and immune system processes, behavior, and detoxification, which were significantly upregulated, resulting in the differential genes significantly enriched in the calcium signaling pathway, PPARα signaling pathway and NF-kB signaling pathway. The results suggest that BF induces the abnormal production of free radicals, which overwhelms the body's self-defense system, leading to varying degrees of oxidative stress. This can result in oxidative damage, DNA damage, abnormal lipid metabolism, autoimmune diseases, clinical poisoning symptoms, and tissue inflammation. This work provides a theoretical basis for the rational application of bifenthrin and environmental risk assessment, as well as scientific guidance for the conservation of amphibian populations.
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Affiliation(s)
- Jing Song
- College of Life Science, Anqing Normal University, Anqing 246133, Anhui, China; The Belt and Road Model International Science and Technology Cooperation Base for Biodiversity Conservation and Utilization in Basins of Anhui Province, Anqing Normal University, Anqing 246133, Anhui, China; Institute for East China Sea Research, Organization for Marine Science and Technology, Nagasaki University, Nagasaki 851-2213, Japan
| | - Fengyun Huang
- College of Life Science, Anqing Normal University, Anqing 246133, Anhui, China; The Belt and Road Model International Science and Technology Cooperation Base for Biodiversity Conservation and Utilization in Basins of Anhui Province, Anqing Normal University, Anqing 246133, Anhui, China
| | - Kun Ma
- College of Life Science, Anqing Normal University, Anqing 246133, Anhui, China; The Belt and Road Model International Science and Technology Cooperation Base for Biodiversity Conservation and Utilization in Basins of Anhui Province, Anqing Normal University, Anqing 246133, Anhui, China
| | - Rui Ding
- College of Life Science, Anqing Normal University, Anqing 246133, Anhui, China; The Belt and Road Model International Science and Technology Cooperation Base for Biodiversity Conservation and Utilization in Basins of Anhui Province, Anqing Normal University, Anqing 246133, Anhui, China
| | - Kai Tan
- College of Life Science, Anqing Normal University, Anqing 246133, Anhui, China; The Belt and Road Model International Science and Technology Cooperation Base for Biodiversity Conservation and Utilization in Basins of Anhui Province, Anqing Normal University, Anqing 246133, Anhui, China
| | - Dan Lv
- College of Life Science, Anqing Normal University, Anqing 246133, Anhui, China
| | - Kiyoshi Soyano
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan; Institute for East China Sea Research, Organization for Marine Science and Technology, Nagasaki University, Nagasaki 851-2213, Japan
| | - Kai Zhao
- College of Life Science, Anqing Normal University, Anqing 246133, Anhui, China; The Belt and Road Model International Science and Technology Cooperation Base for Biodiversity Conservation and Utilization in Basins of Anhui Province, Anqing Normal University, Anqing 246133, Anhui, China
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4
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Lei R, Xue B, Tian X, Liu C, Li Y, Zheng J, Luo B. The association between endocrine disrupting chemicals and MAFLD: Evidence from NHANES survey. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 256:114836. [PMID: 37001192 DOI: 10.1016/j.ecoenv.2023.114836] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/17/2023] [Accepted: 03/23/2023] [Indexed: 06/19/2023]
Abstract
Previous studies on the association of endocrine-disrupting chemicals (EDCs) with metabolic dysfunction-associated fatty liver disease (MAFLD) are very limited. This study analyzed the association of EDCs exposure with MAFLD among 5073 American adults from the 2017-2018 National Health and Nutrition Examination Survey. The results showed that increased exposure to 3 EDCs metabolites (namely As, DiNP and PFOA) were significantly associated with MAFLD, the odds ratio of which were 1.819 (95% CI: 1.224, 2.702), 1.959 (95% CI: 1.224, 3.136) and 2.148 (95% CI: 1.036, 4.456), respectively. Further, the bayesian kernel machine regression model also revealed that phthalates exposure was strongly connected with the MAFLD, particularly in females and the elderly over 65. Moderating effect analysis suggested that higher body mass index (BMI) and inflammatory diet habit (indicated by dietary inflammatory index) strengthened the association between EDCs and MAFLD, whereas population with higher level of insulin sensitivity showed lower risk. In conclusion, our results suggest that either single or combined exposure to EDCs metabolites is link to MAFLD. Our findings also encourage people to sustain a healthy diet, normal levels of insulin sensitivity and BMI, which may help to alleviate the association of MAFLD risk in exposure to EDCs. These results also help us to better understand the association of EDCs and MAFLD and provide effective evidences for preventing MAFLD from the EDCs exposure aspect.
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Affiliation(s)
- Ruoyi Lei
- Institute of Occupational Health and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Baode Xue
- Institute of Occupational Health and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiaoyu Tian
- Institute of Occupational Health and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Ce Liu
- Institute of Occupational Health and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Yanlin Li
- Institute of Occupational Health and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Jie Zheng
- Institute of Occupational Health and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Bin Luo
- Institute of Occupational Health and Environmental Health, School of Public Health, Lanzhou University, Lanzhou, Gansu 730000, China.
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5
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Barbagallo S, Baldauf C, Orosco E, Roy NM. Di-butyl phthalate (DBP) induces defects during embryonic eye development in zebrafish. ECOTOXICOLOGY (LONDON, ENGLAND) 2022; 31:178-185. [PMID: 34773557 DOI: 10.1007/s10646-021-02468-5] [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] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
Di-butyl phthalate (DBP) is a phthalate ester (PAEs) added during the manufacturing of plastics to make them stronger, yet more pliable. DBP is noncovalently bound to plastics resulting in leaching into the environment. Concerning concentrations of DBP have been noted in surface and groundwater, aquatic ecosystems, soil and atmospheric environments globally. Global production of phthalates and thus concomitant exposure has increased over the years making studies on the ecological and environmental safety needed. Most of the literature on DBP focuses on the endocrine disrupting properties of phthalate esters, but the developmental toxicity of DBP is an understudied area. Here, we treat gastrula staged zebrafish embryos with environmentally relevant concentrations of DBP (2.5 µM). We find defects in eye development at 96 h post fertilization including a decrease in the size of the lens and retina in DBP-treated embryos. Defects in eye vascularization as well as loss of the optic nerve and optic tectum were also noted. Here we conclude that exposure to environmentally relevant doses of DBP during early embryonic development is toxic to eye development.
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Affiliation(s)
| | - Cassidy Baldauf
- Department of Biology, Sacred Heart University, Fairfield, CT, USA
| | - Emily Orosco
- Department of Biology, Sacred Heart University, Fairfield, CT, USA
| | - Nicole M Roy
- Department of Biology, Sacred Heart University, Fairfield, CT, USA.
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6
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Mohammadi H, Ashari S. Mechanistic insight into toxicity of phthalates, the involved receptors, and the role of Nrf2, NF-κB, and PI3K/AKT signaling pathways. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:35488-35527. [PMID: 34024001 DOI: 10.1007/s11356-021-14466-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 05/14/2021] [Indexed: 06/12/2023]
Abstract
The wide use of phthalates, as phthalates are used in the manufacturing of not only plastics but also many others goods, has become a main concern in the current century because of their potency to induce deleterious effects on organism health. The toxic effects of phthalates such as reproductive toxicity, cardiotoxicity, hepatotoxicity, nephrotoxicity, teratogenicity, and tumor development have been widely indicated by previous experimental studies. Some of the important mechanisms of toxicity by phthalates are the induction and promotion of inflammation, oxidative stress, and apoptosis. Awareness of the involved molecular pathways of these mechanisms will permit the detection of exact molecular targets of phthalates to protect or treat their toxicity. Up to now, various transcription factors and signaling pathways have been associated with phthalate-induced toxicity which by influencing on nuclear surface and the expression of different genes can alter cell hemostasis. In different studies, the role of nuclear factor erythroid 2-related factor 2 (Nrf2), nuclear factor-κB (NF-κB), and phosphatidylinositol-3-kinase (PI3K)/AKT signaling pathways in processes of oxidative stress, inflammation, apoptosis, and cancer has been shown following exposure to phthalates. In the present review, we aim to survey experimental studies (in vitro and in vivo) in order to show firstly the most involved receptors and also the importance and the role of the mentioned signaling pathways in phthalate-induced toxicity, and with considering this point, the future studies can focus on these molecular targets as a strategic method to reduce environmental chemicals-induced toxicity especially phthalates toxic effects.
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Affiliation(s)
- Hamidreza Mohammadi
- Pharmaceutical Science Research Center, Hemoglobinopathy Institute, Mazandaran University of Medical Sciences, Sari, Iran
- Department of Toxicology/Pharmacology, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Sorour Ashari
- Department of Toxicology/Pharmacology, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran.
- Student Research Committee, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran.
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7
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Zhang Y, Jiao Y, Li Z, Tao Y, Yang Y. Hazards of phthalates (PAEs) exposure: A review of aquatic animal toxicology studies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 771:145418. [PMID: 33548714 DOI: 10.1016/j.scitotenv.2021.145418] [Citation(s) in RCA: 125] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/24/2020] [Accepted: 01/21/2021] [Indexed: 05/05/2023]
Abstract
Phthalates (PAEs) are of wide concern because they are commonly used in various plastic products as plasticizers, and can found their way into the environment. However, their interaction with the environment and their toxicity in aquatic animals is still a matter of intense debate. In this review on PAEs in aquatic environments (lakes, rivers and seas), it is found that there is a large variety and abundance of PAEs in developing countries, and the total concentration of PAEs even exceeds 200 μg / L. The interaction between metabolic processes involved in the toxicity induced by various PAEs is summarized for the first time in the article. Exposure of PAEs can lead to activation of the detoxification system CYP450 and endocrine system receptors of aquatic animals, which in turn causes oxidative stress, metabolic disorders, endocrine disorders, and immunosuppression. Meanwhile, each system can activate / inhibit each other, causing genotoxicity and cell apoptosis, resulting in the growth and development of organisms being blocked. The mixed PAEs shows no cumulative toxicity changes to aquatic animals. For the combined pollution of other chemicals and PAEs, PAE can act as an agonist or antagonist, leading to combined toxicity in different directions. Phthalate monoesters (MPEs), the metabolites of PAEs, are also toxic to aquatic animals, however, the toxicity is weaker than the corresponding parent compounds. This review summarizes and analyzes the current ecotoxicological effects of PAEs on aquatic animals, and provides guidance for future research.
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Affiliation(s)
- Ying Zhang
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China.
| | - Yaqi Jiao
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Zixu Li
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Yue Tao
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Yang Yang
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
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8
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Chen H, Feng W, Chen K, Qiu X, Xu H, Mao G, Zhao T, Ding Y, Wu X. Transcriptomic analysis reveals potential mechanisms of toxicity in a combined exposure to dibutyl phthalate and diisobutyl phthalate in zebrafish (Danio rerio) ovary. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 216:105290. [PMID: 31518775 DOI: 10.1016/j.aquatox.2019.105290] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/27/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Phthalate esters (PAEs), which are notable plasticizers, can be prolific contaminants in aquatic environments, and have been shown to induce reproductive toxicity. However, the studies concerning their toxicity towards aquatic species are based on individual chemicals, and the combined toxicity of PAEs to aquatic organisms remains unclear. The aim of this study was to explore the potential toxicity mechanisms associated with combined exposure to dibutyl phthalate (DBP) and diisobutyl phthalate (DiBP) in adult female zebrafish ovaries. Zebrafish were exposed to DBP, DiBP and their mixtures for 30 days, and their effects on ovarian histology, plasma sex hormones and ovarian transcriptomics were investigated. Plasma estradiol (E2) levels were significantly decreased by 38.9% in the DBP-1133 exposure group and 41.0% in the DiBP-1038 exposure group. The percentage of late/mature oocytes was also significantly decreased by 17.3% under DBP-1133 exposure and 16.2% under DiBP-1038 exposure, while that under combined exposure was not significantly affected. Nevertheless, transcriptome sequencing revealed 2564 differentially expressed genes (DEGs) in zebrafish ovaries after exposure to the mixtures. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis showed that the DEGs were involved in the neuroactive ligand-receptor interaction, GnRH, progesterone-mediated oocyte maturation, oocyte meiosis and steroid hormone biosynthesis signaling pathways. These results revealed that combined exposure exerts potential reproductive toxicity at the molecular level.
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Affiliation(s)
- Hui Chen
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Weiwei Feng
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Kun Chen
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Xuchun Qiu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Hai Xu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Guanghua Mao
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Ting Zhao
- School of the Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Yangyang Ding
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Xiangyang Wu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
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9
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Baken KA, Lambrechts N, Remy S, Mustieles V, Rodríguez-Carrillo A, Neophytou CM, Olea N, Schoeters G. A strategy to validate a selection of human effect biomarkers using adverse outcome pathways: Proof of concept for phthalates and reproductive effects. ENVIRONMENTAL RESEARCH 2019; 175:235-256. [PMID: 31146096 DOI: 10.1016/j.envres.2019.05.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 05/21/2023]
Abstract
Human biomonitoring measures the concentrations of environmental chemicals or their metabolites in body fluids or tissues. Complementing exposure biomarkers with mechanistically based effect biomarkers may further elucidate causal pathways between chemical exposure and adverse health outcomes. We combined information on effect biomarkers previously implemented in human observational studies with mechanisms of action reported in experimental studies and with information from published Adverse Outcome Pathways (AOPs), focusing on adverse reproductive effects of phthalate exposure. Phthalates constitute a group of chemicals that are ubiquitous in consumer products and have been related to a wide range of adverse health effects. As a result of a comprehensive literature search, we present an overview of effect biomarkers for reproductive toxicity that are substantiated by mechanistic information. The activation of several receptors, such as PPARα, PPARγ, and GR, may initiate events leading to impaired male and female fertility as well as other adverse effects of phthalate exposure. Therefore, these receptors appear as promising targets for the development of novel effect biomarkers. The proposed strategy connects the fields of epidemiology and toxicology and may strengthen the weight of evidence in observational studies that link chemical exposures to health outcomes.
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Affiliation(s)
- Kirsten A Baken
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium.
| | - Nathalie Lambrechts
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium
| | - Sylvie Remy
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium; Department of Epidemiology and Social Medicine, University of Antwerp, Antwerp, Belgium
| | - Vicente Mustieles
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada, Granada, Spain; Center for Biomedical Research (CIBM), University of Granada, Granada, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Spain
| | | | - Christiana M Neophytou
- Department of Biological Sciences, School of Pure and Applied Sciences, University of Cyprus, Nicosia, Cyprus
| | - Nicolas Olea
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada, Granada, Spain; Center for Biomedical Research (CIBM), University of Granada, Granada, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Spain
| | - Greet Schoeters
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium; Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium; Department of Environmental Medicine, Institute of Public Health, University of Southern Denmark, Odense, Denmark
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10
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Lee H, Lee J, Choi K, Kim KT. Comparative analysis of endocrine disrupting effects of major phthalates in employed two cell lines (MVLN and H295R) and embryonic zebrafish assay. ENVIRONMENTAL RESEARCH 2019; 172:319-325. [PMID: 30825681 DOI: 10.1016/j.envres.2019.02.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/14/2018] [Accepted: 02/21/2019] [Indexed: 05/05/2023]
Abstract
Endocrine disruption potentials of phthalates have been widely recognized, but relatively little is known about relative potency of major phthalates. In the present study, six phthalates were chosen, i.e., dimethyl phthalate (DMP), diethyl phthalate (DEP), di(2-ethylhexyl) phthalate (DEHP), di-n-octyl phthalate (DnOP), diisononyl phthalate (DINP) and diisodecyl phthalate (DIDP), and their endocrine disruption effects were evaluated by employing two cell lines and an embryonic zebrafish assay. Binding affinity with estrogen receptors (ERs) and effects on steroidogenesis were evaluated with MVLN and H295R cell assays, respectively. In zebrafish embryos, transcription of genes regulating steroid hormone balance and estrogen receptors was measured. Exposure to DMP, DEP, DEHP, and DnOP significantly increased E2/T ratio in H295R cells. However, no significant binding affinity to ERs was observed in MLVN cells. Exposure to DEHP influenced the expression of vtg1, esr1, and cyp19a1b genes in zebrafish larvae. DMP, DEP, DINP, and DIDP exposure led to significant transcriptional changes even at lower exposure concentrations, suggesting their greater endocrine disruption potency than DEHP in zebrafish. Our findings demonstrate that endocrine disruption upon phthalate exposure varies between in vitro and in vivo assay, and a battery of tests are warranted to understand endocrine disruption potentials of phthalates. Consequences of long-term exposure to phthalates other than DEHP warrant further evaluations.
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Affiliation(s)
- Hyojin Lee
- Department of Environmental Energy Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - Jungeun Lee
- School of Public Health, Seoul National University, Seoul 08826, Republic of Korea
| | - Kyungho Choi
- School of Public Health, Seoul National University, Seoul 08826, Republic of Korea
| | - Ki-Tae Kim
- Department of Environmental Energy Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea; Department of Environmental Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea.
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11
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Zheng X, Yan Z, Liu P, Li H, Zhou J, Wang Y, Fan J, Liu Z. Derivation of aquatic life criteria for four phthalate esters and their ecological risk assessment in Liao River. CHEMOSPHERE 2019; 220:802-810. [PMID: 30612049 DOI: 10.1016/j.chemosphere.2018.12.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/04/2018] [Accepted: 12/05/2018] [Indexed: 05/13/2023]
Abstract
As a critical family of endocrine disruptors, phthalate esters (PAEs) attracted considerable attentions due to increasingly detected worldwide. Aquatic life criteria (ALC) for PAEs are crucial for their accurate ecological risk assessment (ERA) and have seldom been derived before. Given this concern, the purpose of the present study is to optimize the ALCs of four priority PAEs to estimate their ecological risks in Liao River. Reproductive endpoint was found to be more sensitive than other endpoints. Thus, reproduction related toxicity data were screened to derive ALCs applying species sensitivity distribution (SSD) method. ALCs of DEHP, DBP, BBP and DEP were calculated to be 0.04, 0.62, 4.71 and 41.9 μg L-1, which indicated decreased toxicity in sequence. Then, the derived ALCs of the four PAEs were applied to estimate their ecological risks in Liao River. A total of 27 sampling sites were selected to detect and analyze the exposure concentrations of PAEs. ERA using the hazard quotient (HQ) method was conducted. The results demonstrated that DEHP exhibited higher risks at 92.6% of sampling sites, and risks posed by DBP were moderate at 63.0% sampling sites. However, risks posed by BBP were low at 70.4% of sampling sites, and there were no risks posed by DEP at 96.3% of sampling sites. The results of probabilistic ecological risk assessment (PERA) indicated that probabilities of exceeding effects thresholds on 5% of species were 60.41%, 0%, 0.12%, 14.28% for DEHP, DEP, BBP and DBP, respectively. The work provides useful information to protect aquatic species in Liao River.
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Affiliation(s)
- Xin Zheng
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Zhenguang Yan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
| | - Peiyuan Liu
- School of Life Sciences, Tianjin University, Tianjin, 300072, China
| | - Hong Li
- Lancaster Environment Centre, Lancaster University, LA1 4YQ, UK
| | - Junli Zhou
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Yizhe Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Juntao Fan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Zhengtao Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
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12
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Forner-Piquer I, Mylonas CC, Fakriadis I, Papadaki M, Piscitelli F, Di Marzo V, Calduch-Giner J, Pérez-Sánchez J, Carnevali O. Effects of diisononyl phthalate (DiNP) on the endocannabinoid and reproductive systems of male gilthead sea bream (Sparus aurata) during the spawning season. Arch Toxicol 2019; 93:727-741. [PMID: 30600365 DOI: 10.1007/s00204-018-2378-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 12/13/2018] [Indexed: 01/26/2023]
Abstract
Diisononyl phthalate (DiNP) is a plasticizer used to improve plastic performance in a large variety of items which has been reported as an endocrine-disrupting chemical (EDC) in several organisms. The endocannabinoid system (ECS) is a cellular signaling system, whose functionality is tightly involved with reproductive function. The aim of the present study was the assessment of the effects of DiNP on the gonadal ECS and on the reproductive function of male gilthead sea bream Sparus aurata, an important marine aquacultured species in Europe, during the reproductive season. Fish were fed for 21 days with two diets contaminated with different nominal concentrations of DiNP (DiNP LOW at 15 µg DiNP kg-1 bw day-1 and DiNP HIGH at 1500 µg DiNP kg-1 bw day-1), based on the tolerable daily intake (TDI) ruled by the European Food Safety Authority for humans. The transcription of several genes related to the ECS was affected by the DiNP. Specifically, DiNP reduced the levels of endocannabinoids and endocannabinoid-like mediators, concomitant with the increase of fatty acid amide hydrolase (FAAH) activity. At the histological level, DiNP LOW induced the highest occurrence of individuals with regressed testes. Steroidogenesis was affected significantly, since plasma 11-ketotestosterone (11-KT), the main active androgen in fish, was significantly decreased by the DiNP HIGH treatment, while plasma 17β-estradiol (E2) levels were raised, associated with an increase of the gonadosomatic index (GSI). Additionally, the level of testosterone (T) was significantly increased in the DiNP LOW group, however, the same DiNP concentration reduced the levels of 17,20β-dihydroxy-4-pregnen-3-one (17,20β-P). The production of sperm was in general not affected, since spermiation index, sperm density, survival and the duration of forward motility did not exhibit any changes compared to controls. However, computer-assisted sperm analysis (CASA) showed that DiNP reduced the percentage of motile cells. The results clearly suggest a negative effect of DiNP via the diet on the male endocrine system of gilthead sea bream during the reproductive season.
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Affiliation(s)
- Isabel Forner-Piquer
- Dipartimento Scienze Della Vita e dell'Ambiente, Università Politecnica Delle Marche, Via Brecce Bianche, 60131, Ancona, Italy
| | - Constantinos C Mylonas
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Center for Marine Research, P.O. Box 2214, 71003, Heraklion, Crete, Greece
| | - Ioannis Fakriadis
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Center for Marine Research, P.O. Box 2214, 71003, Heraklion, Crete, Greece
| | - Maria Papadaki
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Center for Marine Research, P.O. Box 2214, 71003, Heraklion, Crete, Greece
| | - Fabiana Piscitelli
- Endocannabinoid Research Group, Istituto di Chimica Biomolecolare, Consiglio Nazionale Delle Ricerche, Via Campi Flegrei, 80078, Pozzuoli, Italy
| | - Vincenzo Di Marzo
- Endocannabinoid Research Group, Istituto di Chimica Biomolecolare, Consiglio Nazionale Delle Ricerche, Via Campi Flegrei, 80078, Pozzuoli, Italy.,Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Université Laval, Quebec City, QC, G1V 0A6, Canada
| | - Josep Calduch-Giner
- Nutrigenomics and Fish Endocrinology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), 12595, Ribera de Cabanes, Castellón, Spain
| | - Jaume Pérez-Sánchez
- Nutrigenomics and Fish Endocrinology Group, Institute of Aquaculture Torre de la Sal (IATS-CSIC), 12595, Ribera de Cabanes, Castellón, Spain
| | - Oliana Carnevali
- Dipartimento Scienze Della Vita e dell'Ambiente, Università Politecnica Delle Marche, Via Brecce Bianche, 60131, Ancona, Italy.
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13
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Mo J, Zhang Z, Wang Z, Yu Z, Li S, Jiang S, Liu H, Ao J. Isolation and identification of a psychrotolerant dimethyl phthalate-degrading bacterium from selected frozen soil of high-latitude areas in China and optimization of its fermentation conditions using response surface methodology. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2019.1696703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
- Jixian Mo
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Zhihong Zhang
- Laboratory of Rice Processing, Food Processing Institute, Heilongjiang Academy of Agricultural Sciences, Harbin, PR China
| | - Zhigang Wang
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Zhidan Yu
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Shanshan Li
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - ShaSha Jiang
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Hening Liu
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Jia Ao
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
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14
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Yue Z, Yu M, Zhang X, Wang J, Ru S. The anti-androgenic effect of chronic exposure to semicarbazide on male Japanese flounder (Paralichthys olivaceus) and its potential mechanisms. Comp Biochem Physiol C Toxicol Pharmacol 2018; 210:30-34. [PMID: 29729480 DOI: 10.1016/j.cbpc.2018.04.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 04/12/2018] [Accepted: 04/24/2018] [Indexed: 02/07/2023]
Abstract
Semicarbazide (SMC), a new marine pollutant, has anti-estrogenic effects on female Japanese flounder (Paralichthys olivaceus). However, whether SMC also affects the reproductive endocrine system of male marine organisms is currently unclear. In this study, Japanese flounder embryos were exposed to 1, 10, and 100 μg/L SMC for 130 days. Plasma testosterone (T) and 17β-estradiol (E2) concentrations were significantly decreased in male flounders after SMC exposure. The expression of genes involved in T and E2 synthesis, including steroidogenic acute regulatory protein, cytochrome P450 11A1, 17α-hydroxylase, 17β-hydroxysteroid dehydrogenase and cytochrome P450 19A, was down-regulated in the gonads, which may explain the decrease in plasma sex hormones levels. Moreover, SMC-mediated changes in the transcription of these steroidogenic genes were associated with reduced levels of follicle-stimulating hormone beta subunit (fshβ), luteinizing hormone beta subunit (lhβ), follicle-stimulating hormone receptor (fshr) and luteinizing hormone receptor (lhr) mRNA. In addition, down-regulated transcription of fshβ and lhβ in the SMC exposure groups was affected by reduced mRNA levels of seabream gonadotropin-releasing hormone (sbgnrh), g-protein-coupled receptor 54 (gpr54) in the kisspeptin/gpr54 system, as well as the gamma-aminobutyric acid (GABA) synthesis enzyme glutamic acid decarboxylase (gad). Overall, our results showed that environmentally relevant concentrations of SMC exerted anti-androgenic effects in male flounders via impacting HPG axis, kiss/gpr54 system and GABA synthesis, providing theoretical support for investigating reproductive toxicity of environmental pollutants that interfere with the neuroendocrine system.
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Affiliation(s)
- Zonghao Yue
- Marine Life Science College, Ocean University of China, Qingdao 266003, China
| | - Miao Yu
- Marine Life Science College, Ocean University of China, Qingdao 266003, China
| | - Xiaona Zhang
- Marine Life Science College, Ocean University of China, Qingdao 266003, China
| | - Jun Wang
- Marine Life Science College, Ocean University of China, Qingdao 266003, China
| | - Shaoguo Ru
- Marine Life Science College, Ocean University of China, Qingdao 266003, China.
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15
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Shi P, Zhou S, Xiao H, Qiu J, Li A, Zhou Q, Pan Y, Hollert H. Toxicological and chemical insights into representative source and drinking water in eastern China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 233:35-44. [PMID: 29053996 DOI: 10.1016/j.envpol.2017.10.033] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 10/08/2017] [Accepted: 10/08/2017] [Indexed: 05/07/2023]
Abstract
Drinking water safety is continuously threatened by the emergence of numerous toxic organic pollutants (TOPs) in environmental waters. In this study, an approach integrating in vitro bioassays and chemical analyses was performed to explore toxicological profiles of representative source and drinking water from waterworks of the Yangtze River (Yz), Taihu Lake (Th), and the Huaihe River (Hh) basins in eastern China. Overall, 34 of 96 TOPs were detected in all water samples, with higher concentrations in both source and drinking water samples of Hh, and pollutant profiles also differed across different river basins. Non-specific bioassays indicated that source water samples of Hh waterworks showed higher genotoxicity and mutagenicity than samples of Yz and Th. An EROD assay demonstrated dioxin-like toxicity which was detected in 5 of 7 source water samples, with toxin concentration levels ranging from 62.40 to 115.51 picograms TCDD equivalents per liter of water (eq./L). PAHs and PCBs were not the main contributors to observed dioxin-like toxicity in detected samples. All source water samples induced estrogenic activities of 8.00-129.00 nanograms 17β-estradiol eq./L, and estrogens, including 17α-ethinylestradiol and estriol, contributed 40.38-84.15% of the observed activities in examined samples. While drinking water treatments efficiently removed TOPs and their toxic effects, and estrogenic activity was still observed in drinking water samples of Hh. Altogether, this study indicated that the representative source water in eastern China, especially that found in Hh, may negatively affect human health, a finding that demonstrates an urgent requirement for advanced drinking water treatments.
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Affiliation(s)
- Peng Shi
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China.
| | - Sicong Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Hongxia Xiao
- Department of Ecosystem Analysis, Institute for Environmental Research, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Aachen 52074, Germany
| | - Jingfan Qiu
- Department of Pathogen Biology, Key Laboratory of Pathogen Biology of Jiangsu Province, Nanjing Medical University, Nanjing 210029, PR China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Qing Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Yang Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Henner Hollert
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China; Department of Ecosystem Analysis, Institute for Environmental Research, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Aachen 52074, Germany; College of Resources and Environmental Science, Chongqing University, Chongqing 400030, PR China; Key Laboratory of Yangtze Water Environment, Ministry of Education, Tongji University, Shanghai 200092, PR China
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16
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Zhang C, Gong P, Ye Y, Zhang L, Chen M, Hu Y, Gu A, Chen S, Wang Y. NF-κB-vimentin is involved in steroidogenesis stimulated by mono-butyl phthalate in primary cultured ovarian granulosa cells. Toxicol In Vitro 2017; 45:25-30. [PMID: 28735033 DOI: 10.1016/j.tiv.2017.07.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 07/18/2017] [Indexed: 01/20/2023]
Abstract
Di-n-butyl phthalate (DBP) and its active metabolite, monobutyl phthalate (MBP) are the most common endocrine disrupting chemicals. Many studies indicated the effects of MBP on male steroidogenesis, however, little attention have been paid on the effects of low levels of MBP on female steroidogenesis. This study was aimed to assess steroidogenesis stimulated by low-dose MBP on primary cultured ovarian granulosa cells (mGCs). Ovarian granulosa cells were isolated from ICR female mice. Hormone levels in medium were detected by ELISA, mRNA and protein expressions of vimentin, NF-κB p65 and phosphorylation of NF-κB p65 (p-p65) were assayed by qRT-PCR, western blot and immunohistochemistry, respectively. Besides, confocal immunofluorescence and electrophoretic mobility shift assay (EMSA) were used for detecting vimentin expression and activity of NF-κB p65 binding to the promoter of vimentin, respectively. Progesterone levels, mRNA and protein levels of vimentin and p-p65 in cells were increased significantly in mGCs treated by MBP at 10-10M. Additionally, MBP-induced steroidogenesis was blocked when vimentin protein was knocked down or activity of NF-κB was inhibited. EMSA assay showed that binding activity of NF-κB to the promoter regions of vimentin was boosted after MBP exposure. Accordingly, the results suggested that MBP could up-regulated steroidogenesis through NF-κB-vimentin signal in mGCs.
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Affiliation(s)
- Chang Zhang
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, PR China; The Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 211166, PR China
| | - Pan Gong
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, PR China; The Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 211166, PR China
| | - Yan Ye
- Donghai Town Community Health Service Center, Qidong County, Jiangsu Province 226253, PR China
| | - Lulu Zhang
- Safety Assessment and Research Center for Drug, Pesticide and Veterinary Drug of Jiangsu Province, Nanjing Medical University, Nanjing 211166, PR China
| | - Minjian Chen
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, PR China; The Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 211166, PR China
| | - Yanhui Hu
- Safety Assessment and Research Center for Drug, Pesticide and Veterinary Drug of Jiangsu Province, Nanjing Medical University, Nanjing 211166, PR China
| | - Aihua Gu
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, PR China; The Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 211166, PR China
| | - Shanshan Chen
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, PR China; The Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 211166, PR China
| | - Yubang Wang
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, PR China; The Key Laboratory of Reproductive Medicine, Institute of Toxicology, Nanjing Medical University, Nanjing 211166, PR China; Safety Assessment and Research Center for Drug, Pesticide and Veterinary Drug of Jiangsu Province, Nanjing Medical University, Nanjing 211166, PR China.
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17
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Poopal RK, Ramesh M, Maruthappan V, Babu Rajendran R. Potential effects of low molecular weight phthalate esters (C 16H 22O 4 and C 12H 14O 4) on the freshwater fish Cyprinus carpio. Toxicol Res (Camb) 2017; 6:505-520. [PMID: 30090519 PMCID: PMC6062309 DOI: 10.1039/c7tx00084g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 04/21/2017] [Indexed: 01/27/2023] Open
Abstract
The aim of the present study is to assess the toxic effect of dibutyl phthalate (DBP) and diethyl phthalate (DEP) on the freshwater fish Cyprinus carpio. The median lethal concentrations of DBP and DEP for 96 h are found to be 35 and 53 mg L-1, respectively. Fish were exposed to 3.5 mg L-1 (Treatment I) and 1.75 mg L-1 (Treatment II) of DBP and 5.3 mg L-1 (Treatment I) and 2.65 mg L-1 (Treatment II) of DEP for a period of 35 days. The DBP and DEP exposed fish show a concentration based toxic effect on the selected parameters of this study. The hematological parameters, such as hemoglobin (Hb), hematocrit (Hct) and erythrocyte (RBC), were found to decrease in the DBP and DEP treated fish, whereas their leucocyte (WBC) count increased compared to that of the control groups. A biphasic response is noted in the erythrocyte indices, such as mean cellular volume (MCV), mean cellular hemoglobin (MCH) and mean cellular hemoglobin concentration (MCHC), throughout the study period. Exposure to DBP and DEP caused a significant (p < 0.05) decrease in sodium (Na+), potassium (K+), and chloride (Cl-) levels in the gill and brain of the fish throughout the study period when compared to that of their respective controls. The plasma protein level decreased in all the treatments, whereas the plasma glucose level significantly increased in the DBP and DEP exposed fish. Maximum inhibition of Na+/K+-ATPase activity was noticed in the gill and brain of the fish exposed to DBP and DEP. The cholinesterase (ChE) activity in the brain of the fish significantly decreased throughout the study period. A significant (p < 0.05) increase in glutamate oxaloacetate transaminase (GOT) and glutamic pyruvate transaminase (GPT) activity was noted in the fish exposed to both toxicants. The antioxidant enzymatic parameters such as superoxide dismutase (SOD) and catalase (CAT) activities were found to decrease in the gill and liver of the DBP and DEP treated fish, whereas a significant (p < 0.05) increase in lipid peroxidation (LPO) was observed. The above mentioned parameters could be used as potential biomarkers in clinical trials for the assessment of plasticizers. This study provides indispensable information towards future research on the effect of plasticizers on non-target organisms including humans.
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Affiliation(s)
- R K Poopal
- Unit of Toxicology , Department of Zoology , School of Life Sciences , Bharathiar University , Coimbatore-641046 , TamilNadu , India . ; ; ;
- Environmental Toxicology and Toxicogenomics Lab , Department of Environmental Biotechnology , Bharathidasan University , Tiruchirappalli 620024 , TamilNadu , India
| | - M Ramesh
- Unit of Toxicology , Department of Zoology , School of Life Sciences , Bharathiar University , Coimbatore-641046 , TamilNadu , India . ; ; ;
| | - V Maruthappan
- Department of Zoology , School of Life Sciences , Bharathiar University , Coimbatore-641046 , TamilNadu , India
| | - R Babu Rajendran
- Environmental Toxicology and Toxicogenomics Lab , Department of Environmental Biotechnology , Bharathidasan University , Tiruchirappalli 620024 , TamilNadu , India
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18
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Xu Z, Liu J, Wu X, Huang B, Pan X. Nonmonotonic responses to low doses of xenoestrogens: A review. ENVIRONMENTAL RESEARCH 2017; 155:199-207. [PMID: 28231547 DOI: 10.1016/j.envres.2017.02.018] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 01/13/2017] [Accepted: 02/16/2017] [Indexed: 05/21/2023]
Abstract
Xenoestrogens (XEs) mimic or block the synthesis, metabolism and transport of normal endogenous hormones, disturbing normal endocrine function. The available data on the nonmonotonic estrogenic effects of low doses of many XEs are reviewed, covering in vitro, in vivo and epidemiological studies. The observed nonmonotonic patterns of the dose-response curves are discussed, along with possible underlying mechanisms. This review is intended to provide guidance for harm predication and to suggest prevention measures.
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Affiliation(s)
- Zhixiang Xu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Jun Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Xinhao Wu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Bin Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
| | - Xuejun Pan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
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19
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Liu ZH, Li EH, Xu DL, Sun WL, Hong Y, Zhao W, Xia SJ, Jiang JT. Genetic research and structural dysplasia assessment of anorectal malformations in neonatal male rats induced by di(n-butyl) phthalate. ENVIRONMENTAL TOXICOLOGY 2016; 31:261-268. [PMID: 25213187 DOI: 10.1002/tox.22040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Revised: 08/11/2014] [Accepted: 08/14/2014] [Indexed: 06/03/2023]
Abstract
This study was the first to investigate the genetic abnormalities and structural dysplasia of anorectal malformations (ARMs) in male rats induced by di(n-butyl) phthalate (DBP). DBP was administered to timed-pregnant rats to establish the ARM rat model. The incidence of ARMs in male offspring was 39.5%. In neonatal period, decreased body weight and anogenital distance were observed. The general image and histological analysis of male offspring confirmed the presence of ARMs. Anatomical examination of the ARM male rats revealed the dysplasia in solid organs (heart-lung, liver, spleen, and kidney). The decreases of serum testosterone concentration and androgen receptor expression in terminal rectum were indicative of the antiandrogenic effects of DBP. Moreover, significant decreased mRNA expressions of these androgen-related genes such as sonic hedgehog, Gli2, Gli3, bone morphogenetic protein 4, Wnt5a, Hoxa13, Hoxd13, fibroblast growth factor 10, and fibroblast growth factor receptor 2 were found in terminal rectum of the ARM male pubs. These results demonstrated that development of ARM rats was impaired by maternal exposure to DBP. The antiandrogenic effects of DBP disturbing the androgen-related signaling networks might play an important role in the occurrence of ARMs.
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Affiliation(s)
- Zhi-Hong Liu
- Department of Urology, Shanghai First People's Hospital Affiliated to Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080, China
| | - En-Hui Li
- Department of Urology, Shanghai First People's Hospital Affiliated to Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080, China
| | - Dong-Liang Xu
- Department of Urology, Shanghai First People's Hospital Affiliated to Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080, China
| | - Wen-Lan Sun
- Department of Geriatrics, Shanghai First People's Hospital Affiliated to Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080, China
| | - Yan Hong
- Department of Central Laboratory, Shanghai First People's Hospital Affiliated to Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080, China
| | - Wei Zhao
- Department of Urology, Shanghai First People's Hospital Affiliated to Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080, China
| | - Shu-Jie Xia
- Department of Urology, Shanghai First People's Hospital Affiliated to Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080, China
| | - Jun-Tao Jiang
- Department of Urology, Shanghai First People's Hospital Affiliated to Shanghai Jiaotong University, 100 Haining Road, Shanghai, 200080, China
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20
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Li Y, Hu Y, Dong C, Lu H, Zhang C, Hu Q, Li S, Qin H, Li Z, Wang Y. Vimentin-Mediated Steroidogenesis Induced by Phthalate Esters: Involvement of DNA Demethylation and Nuclear Factor κB. PLoS One 2016; 11:e0146138. [PMID: 26745512 PMCID: PMC4706347 DOI: 10.1371/journal.pone.0146138] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 12/13/2015] [Indexed: 11/29/2022] Open
Abstract
Di-n-butyl phthalate (DBP) and its active metabolite, monobutyl phthalate (MBP) are the most common endocrine disrupting chemicals. Many studies indicate that high-doses of DBP and/or MBP exhibit toxicity on testicular function, however, little attention have been paid to the effects of low levels of DBP/MBP on steroidogenesis. As we all know, the steroidogenic acute regulatory protein (StAR) is a key regulator involved in the steroidogenesis. Here we found that, in addition to StAR, MBP/DBP increased the steroidogenesis by a cytoskeletal protein, vimentin. Briefly, in murine adrenocortical tumor (Y1) and the mouse Leydig tumor (MLTC-1) cells, vimentin regulated the secretion of progesterone. When these two cells were exposure to MBP, the DNA demethylation in the vimentin promoter was observed. In addition, MBP also induced the activation of nuclear factor kappa B (NF-κB, a transcriptional regulator of vimentin). These two processes improved the transcriptional elevation of vimentin. Knockdown of NF-κB/vimentin signaling blocked the DBP/MBP-induced steroidogenesis. These in vitro results were also confirmed via an in vivo model. By identifying a mechanism whereby DBP/MBP regulates vimentin, our results expand the understanding of the endocrine disrupting potential of phthalate esters.
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Affiliation(s)
- Yuan Li
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Yanhui Hu
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Congcong Dong
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Hongchao Lu
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Chang Zhang
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Qi Hu
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Shifeng Li
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Heng Qin
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Zhong Li
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Yubang Wang
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- * E-mail:
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Bain PA, Papanicolaou A, Kumar A. Identification of Putative Nuclear Receptors and Steroidogenic Enzymes in Murray-Darling Rainbowfish (Melanotaenia fluviatilis) Using RNA-Seq and De Novo Transcriptome Assembly. PLoS One 2015; 10:e0142636. [PMID: 26599404 PMCID: PMC4658143 DOI: 10.1371/journal.pone.0142636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 10/23/2015] [Indexed: 11/18/2022] Open
Abstract
Murray-Darling rainbowfish (Melanotaenia fluviatilis [Castelnau, 1878]; Atheriniformes: Melanotaeniidae) is a small-bodied teleost currently under development in Australasia as a test species for aquatic toxicological studies. To date, efforts towards the development of molecular biomarkers of contaminant exposure have been hindered by the lack of available sequence data. To address this, we sequenced messenger RNA from brain, liver and gonads of mature male and female fish and generated a high-quality draft transcriptome using a de novo assembly approach. 149,742 clusters of putative transcripts were obtained, encompassing 43,841 non-redundant protein-coding regions. Deduced amino acid sequences were annotated by functional inference based on similarity with sequences from manually curated protein sequence databases. The draft assembly contained protein-coding regions homologous to 95.7% of the complete cohort of predicted proteins from the taxonomically related species, Oryzias latipes (Japanese medaka). The mean length of rainbowfish protein-coding sequences relative to their medaka homologues was 92.1%, indicating that despite the limited number of tissues sampled a large proportion of the total expected number of protein-coding genes was captured in the study. Because of our interest in the effects of environmental contaminants on endocrine pathways, we manually curated subsets of coding regions for putative nuclear receptors and steroidogenic enzymes in the rainbowfish transcriptome, revealing 61 candidate nuclear receptors encompassing all known subfamilies, and 41 putative steroidogenic enzymes representing all major steroidogenic enzymes occurring in teleosts. The transcriptome presented here will be a valuable resource for researchers interested in biomarker development, protein structure and function, and contaminant-response genomics in Murray-Darling rainbowfish.
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Affiliation(s)
- Peter A. Bain
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Division of Land and Water, Urrbrae, South Australia, Australia
- * E-mail:
| | - Alexie Papanicolaou
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Division of Land and Water, Black Mountain, Australian Capital Territory, Australia
| | - Anupama Kumar
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Division of Land and Water, Urrbrae, South Australia, Australia
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Xu H, Dong X, Zhang Z, Yang M, Wu X, Liu H, Lao Q, Li C. Assessment of immunotoxicity of dibutyl phthalate using live zebrafish embryos. FISH & SHELLFISH IMMUNOLOGY 2015; 45:286-292. [PMID: 25956719 DOI: 10.1016/j.fsi.2015.04.033] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/16/2015] [Accepted: 04/27/2015] [Indexed: 06/04/2023]
Abstract
This study set out to understand the immune-toxic effects of dibutyl phthalate (DBP) using transgenic, albino or AB line zebrafish. Zebrafish embryos were exposed to different concentrations of DBP, and the immune cells formation, phagocytosis ability were measured after a short-term exposure to DBP for 6 h post-fertilization (hpf) to 72 or 96 hpf. Exposure to DBP was found to inhibit the neutrophils and macrophage formation in a concentration-dependent manner. The ability of macrophage phagocytosis was all decreased after exposure to DBP, indicating the occurrence of immunotoxicity. The respiratory burst was induced, and the transcription levels of T/B cell-related genes rag1/2 were up-regulated. The overall results indicate that DBP in aquatic environment greatly influence the immune system in fish, and zebrafish embryos can serve as a reliable model for the developmental immunotoxicity of toxic-chemicals.
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Affiliation(s)
- Hai Xu
- School of Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China.
| | - Xing Dong
- School of Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
| | - Zhen Zhang
- School of Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
| | - Ming Yang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Xiangyang Wu
- School of Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
| | - Hongcui Liu
- Hunter Biotechnology, Inc., Hangzhou 311231, Zhejiang Province, China
| | - Qiaocong Lao
- Hunter Biotechnology, Inc., Hangzhou 311231, Zhejiang Province, China
| | - Chunqi Li
- Hunter Biotechnology, Inc., Hangzhou 311231, Zhejiang Province, China
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Bhatia H, Kumar A, Du J, Chapman JC, McLaughlin MJ. Co-treatment with the non-steroidal anti-androgen drug, flutamide and the natural estrogen, 17β-estradiol does not lead to additive reproductive impairment in juvenile Murray rainbowfish (Melanotaenia fluviatilis). J Appl Toxicol 2015; 35:1241-53. [DOI: 10.1002/jat.3135] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 01/06/2015] [Accepted: 01/25/2015] [Indexed: 01/01/2023]
Affiliation(s)
- Harpreet Bhatia
- Commonwealth Scientific and Industrial Research Organisation (Land and Water); PMB 2, Glen Osmond Adelaide SA 5064 Australia
- School of Agriculture, Food and Wine, Waite Research Institute; The University of Adelaide; Adelaide SA 5064 Australia
| | - Anupama Kumar
- Commonwealth Scientific and Industrial Research Organisation (Land and Water); PMB 2, Glen Osmond Adelaide SA 5064 Australia
| | - Jun Du
- Commonwealth Scientific and Industrial Research Organisation (Land and Water); PMB 2, Glen Osmond Adelaide SA 5064 Australia
| | - John C. Chapman
- Office of Environment and Heritage; PMB 29 Lidcombe NSW 1825 Australia
| | - Mike J. McLaughlin
- Commonwealth Scientific and Industrial Research Organisation (Land and Water); PMB 2, Glen Osmond Adelaide SA 5064 Australia
- School of Agriculture, Food and Wine, Waite Research Institute; The University of Adelaide; Adelaide SA 5064 Australia
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Chen P, Li S, Liu L, Xu N. Long-term effects of binary mixtures of 17α-ethinyl estradiol and dibutyl phthalate in a partial life-cycle test with zebrafish (Danio rerio). ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2015; 34:518-526. [PMID: 25385324 DOI: 10.1002/etc.2803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 10/26/2014] [Accepted: 11/07/2014] [Indexed: 06/04/2023]
Abstract
Using 17α-ethinyl estradiol (EE2) and dibutyl phthalate (DBP) as a typical estrogen and phthalate ester, respectively, their combined in vivo effects on zebrafish (Danio rerio) were investigated from the juvenile state to the adult stage. The authors spiked EE2 (5 ng/L and 20 ng/L) and DBP (0.1 mg/L and 0.5 mg/L) either individually or in mixture. At 45 d postfertilization (dpf), the survival rate of zebrafish was comparable in all treatments. Dibutyl phthalate did not induce vitellogenin (VTG) synthesis, and no interaction was found between EE2 and DBP on VTG induction. At 90 dpf, both liver and gill were subject to more severe damage (lipid vacuoles of hepatocytes, amalgamation of gill lamellae, and clubbing at the tips of the secondary lamellae) when coexposed to these 2 chemicals, compared with single exposure. At 115 dpf, generally none of the binary mixture groups showed significantly different growth and sex ratios compared with the corresponding EE2 alone groups. In conclusion, no obvious interactions were detected between EE2 and DBP on the growth, VTG induction, or sex ratio of zebrafish, and they may act independently. However, the influence on morphology of gonad, liver, and gill induced by exposure to the mixture of EE2 and DBP was generally more potent than that by single exposure to EE2 or DBP, indicating the combined long-term harmful effects of EE2 and DBP on the development of zebrafish. Environ Toxicol Chem 2015;34:518-526. © 2014 SETAC.
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Affiliation(s)
- Pengyu Chen
- Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, China
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Bain PA, Ogino Y, Miyagawa S, Iguchi T, Kumar A. Differential ligand selectivity of androgen receptors α and β from Murray-Darling rainbowfish (Melanotaenia fluviatilis). Gen Comp Endocrinol 2015; 212:84-91. [PMID: 25644213 DOI: 10.1016/j.ygcen.2015.01.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 01/20/2015] [Accepted: 01/24/2015] [Indexed: 11/16/2022]
Abstract
Androgen receptors (ARs) mediate the physiological effects of androgens in vertebrates. In fishes, AR-mediated pathways can be modulated by aquatic contaminants, resulting in the masculinisation of female fish or diminished secondary sex characteristics in males. The Murray-Darling rainbowfish (Melanotaenia fluviatilis) is a small-bodied freshwater teleost used in Australia as a test species for environmental toxicology research. We determined concentration-response profiles for selected agonists and antagonists of rainbowfish ARα and ARβ using transient transactivation assays. For both ARα and ARβ, the order of potency of natural agonists was 11-ketotestosterone (11-KT)>5α-dihydrotestosterone>testosterone>androstenedione. Methyltestosterone was a highly potent agonist of both receptors relative to 11-KT. The relative potency of the veterinary growth-promoting androgen, 17β-trenbolone, varied by more than a factor of 5 between ARα and ARβ. The non-steroidal anti-androgen bicalutamide exhibited high inhibitory potency relative to the structurally related model anti-androgen, flutamide. The inhibitory potency of the agricultural fungicide, vinclozolin, was approximately 1.7-fold relative to flutamide for ARα, but over 20-fold in the case of ARβ. Fluorescent protein tagging of ARs showed that the rainbowfish ARα subtype is constitutively localised to the nucleus, while ARβ is cytoplasmic in the absence of ligand, an observation which agrees with the reported subcellular localisation of AR subtypes from other teleost species. Collectively, these data suggest that M. fluviatilis ARα and ARβ respond differently to environmental AR modulators and that in vivo sensitivity to contaminants may depend on the tissue distribution of the AR subtypes at the time of exposure.
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Affiliation(s)
- Peter A Bain
- Land and Water Flagship, Commonwealth Scientific and Industrial Research Organisation, PMB 2, Glen Osmond, South Australia 5064, Australia.
| | - Yukiko Ogino
- Division of Molecular Environmental Endocrinology, National Institute for Basic Biology, Nishigonaka-38 Myodaijicho, Okazaki, Aichi Prefecture 444-0867, Japan
| | - Shinichi Miyagawa
- Division of Molecular Environmental Endocrinology, National Institute for Basic Biology, Nishigonaka-38 Myodaijicho, Okazaki, Aichi Prefecture 444-0867, Japan
| | - Taisen Iguchi
- Division of Molecular Environmental Endocrinology, National Institute for Basic Biology, Nishigonaka-38 Myodaijicho, Okazaki, Aichi Prefecture 444-0867, Japan
| | - Anupama Kumar
- Land and Water Flagship, Commonwealth Scientific and Industrial Research Organisation, PMB 2, Glen Osmond, South Australia 5064, Australia
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Bhatia H, Kumar A, Chapman JC, McLaughlin MJ. Effects of short-term exposure to the model anti-androgen, flutamide on reproductive function based endpoints in female Murray rainbowfish (Melanotaenia fluviatilis). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 109:143-151. [PMID: 25193785 DOI: 10.1016/j.ecoenv.2014.07.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 07/16/2014] [Accepted: 07/24/2014] [Indexed: 06/03/2023]
Abstract
The aim of the present study was to evaluate the responses of female Murray rainbowfish (Melanotaenia fluviatilis) to the model anti-androgen, flutamide in a short-term exposure. Adult female Murray rainbowfish were exposed to nominal (measured) concentrations of 125 (104), 250 (163), 500 (378) and 1000 (769) µg/L of flutamide for seven days in a semi-static set-up. Plasma vitellogenin (VTG), 11-keto testosterone (11-KT) and 17β-estradiol (E2) concentrations, brain aromatase activity and ovarian histology were assessed following the exposure. No treatment-related mortality was found in rainbowfish and there was no effect of flutamide on the developmental stage of the ovaries. Histological investigation revealed absence of mature oocytes in flutamide-treated fish. In addition, a significant reduction in the sizes of the vitellogenic oocytes was found after treatment with 500 and 1000 µg/L flutamide. The circulating levels of VTG and the activity of aromatase in the brain were also significantly reduced in fish treated with 500 and 1000 µg/L flutamide. Treatment with higher concentrations of flutamide reduced the levels of 11-KT and E2 in plasma. The results from this study demonstrate that a short-term exposure to the model anti-androgen, flutamide can adversely affect the reproductive function based on end-points such as plasma VTG, 11-KT and E2; brain aromatase activity and sizes of the oocytes in female Murray rainbowfish. Further, a positive correlation between these experimental variables suggests hormonal imbalance.
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Affiliation(s)
- Harpreet Bhatia
- School of Agriculture, Food and Wine, PMB 1, The University of Adelaide, Australia; Water for a Healthy Country Flagship, CSIRO Land and Water, PMB 2, Glen Osmond, SA 5064, Australia.
| | - Anupama Kumar
- Water for a Healthy Country Flagship, CSIRO Land and Water, PMB 2, Glen Osmond, SA 5064, Australia
| | - John C Chapman
- Office of Environment and Heritage, PMB 29, Lidcombe, NSW 1825, Australia
| | - Mike J McLaughlin
- School of Agriculture, Food and Wine, PMB 1, The University of Adelaide, Australia; Water for a Healthy Country Flagship, CSIRO Land and Water, PMB 2, Glen Osmond, SA 5064, Australia
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Bhatia H, Kumar A, Chapman JC, McLaughlin MJ. Long-term exposures to di-n-butyl phthalate inhibit body growth and impair gonad development in juvenile Murray rainbowfish (Melanotaenia fluviatilis). J Appl Toxicol 2014; 35:806-16. [DOI: 10.1002/jat.3076] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 08/30/2014] [Accepted: 08/30/2014] [Indexed: 12/24/2022]
Affiliation(s)
- Harpreet Bhatia
- Commonwealth Scientific and Industrial Research Organisation; PMB 2, Glen Osmond Adelaide SA 5064 Australia
- School of Agriculture, Food and Wine, Waite Research Institute, PMB 1; The University of Adelaide; Adelaide SA 5064 Australia
| | - Anupama Kumar
- Commonwealth Scientific and Industrial Research Organisation; PMB 2, Glen Osmond Adelaide SA 5064 Australia
| | - John C. Chapman
- Office of Environment and Heritage; PMB 29 Lidcombe NSW 1825 Australia
| | - Mike J. McLaughlin
- Commonwealth Scientific and Industrial Research Organisation; PMB 2, Glen Osmond Adelaide SA 5064 Australia
- School of Agriculture, Food and Wine, Waite Research Institute, PMB 1; The University of Adelaide; Adelaide SA 5064 Australia
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Xu N, Chen P, Liu L, Zeng Y, Zhou H, Li S. Effects of combined exposure to 17α-ethynylestradiol and dibutyl phthalate on the growth and reproduction of adult male zebrafish (Danio rerio). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 107:61-70. [PMID: 24905698 DOI: 10.1016/j.ecoenv.2014.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 04/30/2014] [Accepted: 05/02/2014] [Indexed: 06/03/2023]
Abstract
To evaluate the combined effects of 17α-ethynylestradiol (EE2) and dibutyl phthalate (DBP) on the growth and reproduction of male zebrafish, three-month-old fish were exposed to 0.005 or 0.020µg/L EE2, 100 or 500µg/L DBP or their binary mixtures under semi-static conditions. Investigated parameters include the length, weight, condition factor, vitellogenin (VTG) induction, acyl-CoA oxidase (AOX) protein level, histopathological alteration of testis, liver and gill, and reproductive capacity. After 21d exposure, no statistical difference was found among the weights, lengths and condition factors of different treatment groups. In all binary mixture groups, decreased VTG levels were detected compared to EE2-only groups; and the AOX levels were significantly lower than DBP-only treatments while both chemicals can individually induce AOX synthesis. Therefore, EE2 and DBP may act additively on VTG and antagonistically on AOX induction in males. After 45d exposure, delayed gametogenesis was observed for the DBP-only groups, indicated by fewer spermatozoa and more spermatocytes, which was further aggravated with the addition of EE2. The developmental delay of testis partially recovered after a 30d depuration in clean water. Combined exposure also caused liver and gill lesions, which were not alleviated during the 30d depuration, suggesting a nonreversible harmful effect the same as single exposure. Mixed EE2 and DBP were observed to impair the reproductive capability (the fecundity and fertilization rate) of males, while single exposure did not. Co-exposed to 0.020µg/L EE2 and 100µg/L DBP promoted the early hatching of offspring (F1 generation) at 48h post-fertilization (hpf), but the survival rates of the F1 generation were similar in all treatments. Our findings indicate that the effects of mixed EE2 and DBP at environmentally relevant levels can be either antagonistic or additive relying on the specific toxicological endpoints and the respective doses of each chemical.
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Affiliation(s)
- Nan Xu
- Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
| | - Pengyu Chen
- Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Lei Liu
- Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yaqiong Zeng
- Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Haixia Zhou
- Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Song Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
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Li EH, Han BM, Sun WL, Liang SJ, Xia SJ, Jiang JT. Expression of Wnt5a during development of anorectal malformations in a rat model of prenatal exposure to di(n-butyl) phthalate. Toxicol Mech Methods 2014; 24:455-60. [DOI: 10.3109/15376516.2014.932037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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