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Zhang L, Li M, Zhang D, Yue W, Qian Z. Prioritizing of potential environmental exposure carcinogens beyond IARC group 1-2B based on weight of evidence (WoE) approach. Regul Toxicol Pharmacol 2024; 150:105646. [PMID: 38777300 DOI: 10.1016/j.yrtph.2024.105646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 05/12/2024] [Accepted: 05/17/2024] [Indexed: 05/25/2024]
Abstract
Environmental exposures are the main cause of cancer, and their carcinogenicity has not been fully evaluated, identifying potential carcinogens that have not been evaluated is critical for safety. This study is the first to propose a weight of evidence (WoE) approach based on computational methods to prioritize potential carcinogens. Computational methods such as read across, structural alert, (Quantitative) structure-activity relationship and chemical-disease association were evaluated and integrated. Four different WoE approach was evaluated, compared to the best single method, the WoE-1 approach gained 0.21 and 0.39 improvement in the area under the receiver operating characteristic curve (AUC) and Matthew's correlation coefficient (MCC) value, respectively. The evaluation of 681 environmental exposures beyond IARC list 1-2B prioritized 52 chemicals of high carcinogenic concern, of which 21 compounds were known carcinogens or suspected carcinogens, and eight compounds were identified as potential carcinogens for the first time. This study illustrated that the WoE approach can effectively complement different computational methods, and can be used to prioritize chemicals of carcinogenic concern.
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Affiliation(s)
- Lu Zhang
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China; Tianjin Key Laboratory of Pathogenic Microbiology of Infectious Disease, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Min Li
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China; Tianjin Key Laboratory of Pathogenic Microbiology of Infectious Disease, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Dalong Zhang
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Wenbo Yue
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Zhiyong Qian
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China.
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Rosellini M, Omer EA, Schulze A, Ali NT, Boulos JC, Marini F, Küpper JH, Efferth T. Impact of plastic-related compounds on the gene expression signature of HepG2 cells transfected with CYP3A4. Arch Toxicol 2024; 98:525-536. [PMID: 38160208 PMCID: PMC10794370 DOI: 10.1007/s00204-023-03648-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 11/16/2023] [Indexed: 01/03/2024]
Abstract
The presence of plastic and microplastic within the oceans as well as in marine flora and fauna have caused a multitude of problems that have been the topic of numerous investigations for many years. However, their impact on human health remains largely unknown. Such plastic and microplastic particles have been detected in blood and placenta, underlining their ability to enter the human body. Plastics also contain other compounds, such as plasticizers, antioxidants, or dyes, whose impact on human health is currently being studied. Critical enzymes within the metabolism of endogenous molecules, especially of xenobiotics, are the cytochrome P450 monooxygenases (CYPs). Although their importance in maintaining cellular balance has been confirmed, their interactions with plastics and related products are poorly understood. In this study, the possible relationship between different plastic-related compounds and CYP3A4 as one of the most important CYPs was analyzed using hepatic cells overexpressing this enzyme. Beginning with virtual compound screening and molecular docking of more than 1000 plastic-related compounds, several candidates were identified to interact with CYP3A4. In a second step, RNA-sequencing was used to study in detail the transcriptome-wide gene expression levels affected by the selected compounds. Three candidate molecules ((2,2'-methylenebis(6-tert-butyl-4-methylphenol), 1,1-bis(3,5-di-tert-butyl-2-hydroxyphenyl)ethane, and 2,2'-methylenebis(6-cyclohexyl-4-methylphenol)) had an excellent binding affinity to CYP3A4 in-silico as well as cytotoxic effects and interactions with several metabolic pathways in-vitro. We identified common pathways influenced by all three selected plastic-related compounds. In particular, the suppression of pathways related to mitosis and 'DNA-templated DNA replication' which were confirmed by cell cycle analysis and single-cell gel electrophoresis. Furthermore, several mis-regulated metabolic and inflammation-related pathways were identified, suggesting the induction of hepatotoxicity at different levels. These findings imply that these compounds may cause liver problems subsequently affecting the entire organism.
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Affiliation(s)
- Matteo Rosellini
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Ejlal A Omer
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Alicia Schulze
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), Medical Center of the Johannes Gutenberg University, 55122, Mainz, Germany
| | - Nadeen T Ali
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Joelle C Boulos
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Federico Marini
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), Medical Center of the Johannes Gutenberg University, 55122, Mainz, Germany
- Research Center for Immunotherapy (FZI), Langenbeckstraße 1, 55131, Mainz, Germany
| | - Jan-Heiner Küpper
- Institute of Biotechnology, Brandenburg University of Technology Cottbus-Senftenberg, 03046, Senftenberg, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany.
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Chang X, Wang WX. Phthalate acid esters contribute to the cytotoxicity of mask leachate: Cell-based assay for toxicity assessment. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132093. [PMID: 37494796 DOI: 10.1016/j.jhazmat.2023.132093] [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: 05/21/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/28/2023]
Abstract
After the COVID-19 outbreak, masks have become an essential part of people lives. Although several studies have been conducted to determine the release of hazardous substances from masks, how their co-presence poses a potential exposure risk to human health remains unexplored. In this study, we quantitatively compared the leaching of substances from six different common types of masks, including phthalate acid esters (PAEs), metals, and microplastics (MPs), and comprehensively evaluated the potential cytotoxicity of different leachates. MPs smaller than 3 µm were quantified by Py-GC-MS, and reusable masks showed greater releasing potentials up to 1504 µg/g. We also detected the prevalence of PAEs in masks, with the highest release reaching 42 μg/g, with dibutyl phthalate (DBP), diisobutyl phthalate (DiBP) and bis (2-ethylhexyl) phthalate (DEHP) being the predominant types. Moreover, the antimicrobial cloth masks released 173.0 µg of Cu or 4.5 µg of Ag, representing 2.7% and 0.04% of the original masks, respectively. Our cell-based assay results demonstrated for the first time that mask leachate induced nuclear condensation with DNA damage, and simultaneously triggered high levels of glutathione and reactive oxidative stress production, which exacerbated mitochondrial fragmentation, eventually leading to cell death. Combined with substance identification and correlation analysis, PAEs were found to be the contributors to cytotoxicity. Masks containing Cu or Ag led to acidification of lysosomes and alkalinization of cells. These results strongly suggested that the levels of PAEs in the production of regulatory masks should be strictly controlled.
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Affiliation(s)
- Xinyi Chang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
| | - Wen-Xiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China.
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4
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Rosellini M, Schulze A, Omer EA, Ali NT, Marini F, Küpper JH, Efferth T. The Effect of Plastic-Related Compounds on Transcriptome-Wide Gene Expression on CYP2C19-Overexpressing HepG2 Cells. Molecules 2023; 28:5952. [PMID: 37630204 PMCID: PMC10459118 DOI: 10.3390/molecules28165952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
In recent years, plastic and especially microplastic in the oceans have caused huge problems to marine flora and fauna. Recently, such particles have also been detected in blood, breast milk, and placenta, underlining their ability to enter the human body, presumably via the food chain and other yet-unknown mechanisms. In addition, plastic contains plasticizers, antioxidants, or lubricants, whose impact on human health is also under investigation. At the cellular level, the most important enzymes involved in the metabolism of xenobiotic compounds are the cytochrome P450 monooxygenases (CYPs). Despite their extensive characterization in the maintenance of cellular balance, their interactions with plastic and related products are unexplored. In this study, the possible interactions between several plastic-related compounds and one of the most important cytochromes, CYP2C19, were analyzed. By applying virtual compound screening and molecular docking to more than 1000 commercially available plastic-related compounds, we identified candidates that are likely to interact with this protein. A growth inhibition assay confirmed their cytotoxic activity on a CYP2C19-transfected hepatic cell line. Subsequently, we studied the effect of the selected compounds on the transcriptome-wide gene expression level by conducting RNA sequencing. Three candidate molecules were identified, i.e., 2,2'-methylene bis(6-tert-butyl-4-methylphenol), 1,1-bis(3,5-di-tert-butyl-2-hydroxyphenyl) ethane, and 2,2'-methylene bis(6-cyclohexyl-4-methylphenol)), which bound with a high affinity to CYP2C19 in silico. They exerted a profound cytotoxicity in vitro and interacted with several metabolic pathways, of which the 'cholesterol biosynthesis process' was the most affected. In addition, other affected pathways involved mitosis, DNA replication, and inflammation, suggesting an increase in hepatotoxicity. These results indicate that plastic-related compounds could damage the liver by affecting several molecular pathways.
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Affiliation(s)
- Matteo Rosellini
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany; (M.R.); (E.A.O.); (N.T.A.)
| | - Alicia Schulze
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center of the Johannes, Gutenberg University, 55122 Mainz, Germany; (A.S.); (F.M.)
| | - Ejlal A. Omer
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany; (M.R.); (E.A.O.); (N.T.A.)
| | - Nadeen T. Ali
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany; (M.R.); (E.A.O.); (N.T.A.)
| | - Federico Marini
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center of the Johannes, Gutenberg University, 55122 Mainz, Germany; (A.S.); (F.M.)
- Research Center for Immunotherapy (FZI), Langenbeckstraße 1, 55131 Mainz, Germany
| | - Jan-Heiner Küpper
- Institute of Biotechnology, Brandenburg University of Technology Cottbus-Senftenberg, 03046 Senftenberg, Germany;
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany; (M.R.); (E.A.O.); (N.T.A.)
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5
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Graf M, Greenfield LM, Reay MK, Bargiela R, Williams GB, Onyije C, Lloyd CEM, Bull ID, Evershed RP, Golyshin PN, Chadwick DR, Jones DL. Increasing concentration of pure micro- and macro-LDPE and PP plastic negatively affect crop biomass, nutrient cycling, and microbial biomass. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131932. [PMID: 37390687 DOI: 10.1016/j.jhazmat.2023.131932] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/29/2023] [Accepted: 06/23/2023] [Indexed: 07/02/2023]
Abstract
Over the last 50 years, the intense use of agricultural plastic in the form of mulch films has led to an accumulation of plastic in soil, creating a legacy of plastic in agricultural fields. Plastic often contains additives, however it is still largely unknown how these compounds affect soil properties, potentially influencing or masking effects of the plastic itself. Therefore, the aim of this study was to investigate the effects of pure plastics of varying sizes and concentrations, to improve our understanding of plastic-only interactions within soil-plant mesocosms. Maize (Zea mays L.) was grown over eight weeks following the addition of micro and macro low-density polyethylene and polypropylene at increasing concentrations (equivalent to 1, 10, 25, and 50 years mulch film use) and the effects of plastic on key soil and plant properties were measured. We found the effect of both macro and microplastic on soil and plant health is negligible in the short-term (1 to <10 years). However, ≥ 10 years of plastic application for both plastic types and sizes resulted in a clear negative effect on plant growth and microbial biomass. This study provides vital insight into the effect of both macro and microplastics on soil and plant properties.
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Affiliation(s)
- Martine Graf
- School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK.
| | - Lucy M Greenfield
- School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Michaela K Reay
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | - Rafael Bargiela
- Centre of Environmental Biotechnology, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Gwion B Williams
- Centre of Environmental Biotechnology, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Charles Onyije
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | - Charlotte E M Lloyd
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | - Ian D Bull
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | - Richard P Evershed
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | - Peter N Golyshin
- Centre of Environmental Biotechnology, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - David R Chadwick
- School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Davey L Jones
- School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK; Centre of Environmental Biotechnology, Bangor University, Bangor, Gwynedd LL57 2UW, UK; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6150, Australia
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6
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Wang HJ, Peng CW, Han X, Wang Y, Zhang J, Liu JL, Zhou MX, Tang F, Liu AL. Toxicological characteristics of drinking water in two large-scale municipal water supply systems of a metropolitan city in Central China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:64058-64066. [PMID: 37060410 DOI: 10.1007/s11356-023-26882-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 04/04/2023] [Indexed: 04/16/2023]
Abstract
Drinking water safety is threatened by numerous toxic organic pollutants difficult to chemically monitor. This study aimed to determine the toxicological profiles of organic extracts (OEs) of water samples from source to tap in two drinking water supply systems in a metropolitan city, Central China, during different hydrological periods. Mortality, DNA damage, growth, and development of Caenorhabditis elegans were evaluated following exposure to OEs. The median lethal doses of OEs of drinking water samples (n = 48) ranged from 266 REF (relative enrichment factor) to > 1563 REF. When tested at a dose of 100 REF, 56.25% (27/48) of OEs induced genotoxicity, 4.17% (2/48) inhibited the growth, and 45.83% (22/48) decreased the offspring number in C. elegans. No clear temporal-spatial variation patterns of the OEs toxicity indicators were observed. The correlations among the toxicity indicators were generally poor. The observed toxicities were not closely related to the level of dissolved organic carbon in drinking water. These findings support using multiple endpoint bioassays, such as C. elegans-based approaches, as complementary tools to conventional chemical analysis for drinking water quality monitoring.
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Affiliation(s)
- Huai-Ji Wang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
- Wuhan Center for Disease Control and Prevention, Wuhan, 430022, People's Republic of China
| | - Chen-Wei Peng
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Xue Han
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
- School of Basic Medicine, Henan University of Chinese Medicine, Zhengzhou, 450046, People's Republic of China
| | - Yan Wang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Jie Zhang
- Wuhan Water Group Company Limited, Wuhan, 430034, People's Republic of China
| | - Jun-Ling Liu
- Wuhan Center for Disease Control and Prevention, Wuhan, 430022, People's Republic of China
| | - Meng-Xuan Zhou
- Wuhan Water Group Company Limited, Wuhan, 430034, People's Republic of China
| | - Fei Tang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Ai-Lin Liu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
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7
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Domenech J, Annangi B, Marcos R, Hernández A, Catalán J. Insights into the potential carcinogenicity of micro- and nano-plastics. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2023; 791:108453. [PMID: 36739075 DOI: 10.1016/j.mrrev.2023.108453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/14/2022] [Accepted: 01/31/2023] [Indexed: 02/05/2023]
Abstract
There is a growing concern regarding the potential health effects that continuous exposure to environmental micro- and nano-plastics (MNPLs) may cause on humans. Due to their persistent nature, MNPLs may accumulate in different organs and tissues and may induce in the long term the development of cancer. The present study aimed to review the existing literature on the carcinogenic potential of MNPLs. As studies directly assessing carcinogenicity were expected to be scarce, studies dealing with indirect outcomes associated with the carcinogenic process were considered in the literature search. Of the 126 studies screened, 19 satisfied the inclusion criteria. Besides, 7 additional cross-referenced articles, identified through a careful reading of the previously selected papers, also met the inclusion criteria and, consequently, were included in the review. Most of the selected studies were performed using in vitro models whereas about 40% of the studies were done in rodents, although none of them included a 2-year carcinogenicity assay. Most of the reviewed studies pointed out the potential of MNPLs to induce inflammation and genotoxicity, the latter being recognized as a strong predictor of carcinogenicity. These, along with other important findings such as the MNPLs' ability to accumulate into cells and tissues, or their capacity to induce fibrosis, may suggest an association between MNPLs exposures and the carcinogenic potential. Nevertheless, the limited number of available studies precludes reaching clear conclusions. Therefore, this review also provides several recommendations to cover the current knowledge gaps and address the future evaluation of the MNPLs' carcinogenic risk.
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Affiliation(s)
- Josefa Domenech
- Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, Helsinki 00032, Finland
| | - Balasubramanyam Annangi
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Ricard Marcos
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Alba Hernández
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Bellaterra, Spain.
| | - Julia Catalán
- Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, Helsinki 00032, Finland; Department of Anatomy, Embryology and Genetics, University of Zaragoza, 50013 Zaragoza, Spain.
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8
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Ateş H, Argun ME. Fate of phthalate esters in landfill leachate under subcritical and supercritical conditions and determination of transformation products. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 155:292-301. [PMID: 36410146 DOI: 10.1016/j.wasman.2022.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 10/16/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
The hypothesis of this study is that the complex organic load of landfill leachate could be reduced by supercritical water oxidation (SCWO) in a single stage, but this operation could lead to the formation of some undesired by-products of phthalate esters (PAEs). In this context, the fate of selected PAEs, butyl benzyl phthalate (BBP), di-2-ethylhexyl phthalate (DEHP) and di-n-octyl phthalate (DNOP), was investigated during the oxidation of leachate under subcritical and supercritical conditions. Experiments were conducted at various temperatures (250-500 °C), pressures (10-35 MPa), residence times (2-18 min) and dimensionless oxidant doses (DOD: 0.2-2.3). The SCWO process decreased the leachate's chemical oxygen demand (COD) from 34,400 mg/L to 1,120 mg/L (97%). Removal efficiencies of DEHP and DNOP with longer chains were higher than BBP. The DEHP, DNOP and BBP compounds were removed in the range of -35 to 100%, -18 to 92%, and 28 to 36%, respectively, by the SCWO process. Many non-target PAEs were qualitatively detected in the raw leachate apart from the selected PAEs. Besides, 97% of total PAEs including both target and non-target PAEs was mineralized at 15 MPa, 300 °C and 5 min. Although PAEs were highly mineralized during SCWO of the leachate, aldehyde, ester, amide and amine-based phthalic substances were frequently detected as by-products. These by-products have transformed into higher molecular weight by-products with binding reactions as a result of complex SCWO process chemistry. It has also been determined that some non-target PAEs such as 1,2-benzenedicarboxylic acid bis(2-methylpropyl)ester and bis(2-ethylhexyl) isophthalate can transform to the DEHP. Therefore, the suggested pathway in this study for PAEs degradation during the SCWO of the leachate includes substitution and binding reactions as well as an oxidation reaction.
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Affiliation(s)
- Havva Ateş
- Konya Technical University, Faculty of Engineering and Natural Science, Department of Environmental Engineering, Türkiye.
| | - Mehmet Emin Argun
- Konya Technical University, Faculty of Engineering and Natural Science, Department of Environmental Engineering, Türkiye.
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9
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Karabulut G, Barlas N. Endocrine adverse effects of mono(2-ethylhexyl) phthalate and monobutyl phthalate in male pubertal rats. Arh Hig Rada Toksikol 2022; 73:285-296. [PMID: 36607728 PMCID: PMC9985344 DOI: 10.2478/aiht-2022-73-3617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/01/2022] [Accepted: 11/01/2022] [Indexed: 01/07/2023] Open
Abstract
Considering that research of adverse effects of mono(2-ethylhexyl) phthalate (MEHP) and monobutyl phthalate (MBP), two key metabolites of the most common phthalates used as plasticisers in various daily-life products, has been scattered and limited, the aim of our study was to provide a more comprehensive analysis by focusing on major organ systems, including blood, liver, kidney, and pancreas in 66 male pubertal rats randomised into eleven groups of six. The animals were receiving either metabolite at doses of 25, 50, 100, 200, or 400 mg/kg bw a day by gavage for 28 days. The control group was receiving corn oil. At the end of the experiment, blood samples were collected for biochemical, haematological, and immunological analyses. Samples of kidney, liver, and pancreas were dissected for histopathological analyses. Exposure to either compound resulted in increased liver and decreased pancreas weight, especially at the highest doses. Exposed rats had increased ALT, AST, glucose, and triglyceride levels and decreased total protein and albumin levels. Both compounds increased MCV and decreased haemoglobin levels compared to control. Although they also lowered the insulin level, exposed rats had negative islet cell and insulin antibodies, same as control. Treatment-related histopathological changes included sinusoidal degeneration in the liver, glomerular degeneration in the kidney, and degeneration of pancreatic islets. Our findings document toxic outcomes of MEHP and MBP on endocrine organs in male pubertal rats but also suggest the need for additional studies to better understand the mechanisms behind adverse effects in chronic exposure.
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Affiliation(s)
- Gözde Karabulut
- Dumlupınar University Faculty of Science, Department of Biology, Kütahya, Turkey
| | - Nurhayat Barlas
- Hacettepe University Faculty of Science, Department of Biology, Ankara, Turkey
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10
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Kobets T, Smith BPC, Williams GM. Food-Borne Chemical Carcinogens and the Evidence for Human Cancer Risk. Foods 2022; 11:foods11182828. [PMID: 36140952 PMCID: PMC9497933 DOI: 10.3390/foods11182828] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
Commonly consumed foods and beverages can contain chemicals with reported carcinogenic activity in rodent models. Moreover, exposures to some of these substances have been associated with increased cancer risks in humans. Food-borne carcinogens span a range of chemical classes and can arise from natural or anthropogenic sources, as well as form endogenously. Important considerations include the mechanism(s) of action (MoA), their relevance to human biology, and the level of exposure in diet. The MoAs of carcinogens have been classified as either DNA-reactive (genotoxic), involving covalent reaction with nuclear DNA, or epigenetic, involving molecular and cellular effects other than DNA reactivity. Carcinogens are generally present in food at low levels, resulting in low daily intakes, although there are some exceptions. Carcinogens of the DNA-reactive type produce effects at lower dosages than epigenetic carcinogens. Several food-related DNA-reactive carcinogens, including aflatoxins, aristolochic acid, benzene, benzo[a]pyrene and ethylene oxide, are recognized by the International Agency for Research on Cancer (IARC) as causes of human cancer. Of the epigenetic type, the only carcinogen considered to be associated with increased cancer in humans, although not from low-level food exposure, is dioxin (TCDD). Thus, DNA-reactive carcinogens in food represent a much greater risk than epigenetic carcinogens.
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Affiliation(s)
- Tetyana Kobets
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA
- Correspondence: ; Tel.: +1-914-594-3105; Fax: +1-914-594-4163
| | - Benjamin P. C. Smith
- Future Ready Food Safety Hub, Nanyang Technological University, Singapore 639798, Singapore
| | - Gary M. Williams
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA
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Saab Y, Oueis E, Mehanna S, Nakad Z, Stephan R, Khnayzer RS. Risk Assessment of Phthalates and Their Metabolites in Hospitalized Patients: A Focus on Di- and Mono-(2-ethylhexyl) Phthalates Exposure from Intravenous Plastic Bags. TOXICS 2022; 10:toxics10070357. [PMID: 35878262 PMCID: PMC9324282 DOI: 10.3390/toxics10070357] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/23/2022] [Accepted: 06/27/2022] [Indexed: 02/05/2023]
Abstract
Phthalate esters (PAEs) are plasticizers associated with multiple toxicities; however, no strict regulations have been implemented to restrict their use in medical applications in Lebanon. Our study aimed at assessing the potential risks correlated with phthalate exposure from IV bags manufactured in Lebanon. GC–MS analysis showed that di-(2-ethylhexyl) phthalate (DEHP) is the predominant phthalate found in almost all samples tested with values ranging from 32.8 to 39.7% w/w of plastic. DEHP concentrations in the IV solutions reached up to 148 µg/L, as measured by SPME-GC–MS/MS, thus resulting in hazard quotients greater than 1, specifically in neonates. The toxicity of DEHP is mainly attributed to its metabolites, most importantly mono-(2-ethylhexyl) phthalate (MEHP). The IV bag solution with the highest content in DEHP was therefore used to extrapolate the amounts of urinary MEHP. The highest concentrations were found in neonates having the lowest body weight, which is concerning, knowing the adverse effects of MEHP in infants. Our study suggests that the use of IV bags manufactured in Lebanon could pose a significant risk in hospitalized patients, especially infants in neonatal care. Therefore, Lebanon, as well as other countries, should start imposing laws that restrict the use of phthalates in medical IV bags and substitute them with less toxic plasticizers.
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Affiliation(s)
- Yolande Saab
- Pharmaceutical Sciences Department, School of Pharmacy, Lebanese American University, Chouran, Beirut 1102-2801, Lebanon; (E.O.); (R.S.)
- Correspondence: (Y.S.); (R.S.K.)
| | - Emilia Oueis
- Pharmaceutical Sciences Department, School of Pharmacy, Lebanese American University, Chouran, Beirut 1102-2801, Lebanon; (E.O.); (R.S.)
| | - Stephanie Mehanna
- Department of Natural Sciences, Lebanese American University, Chouran, Beirut 1102-2801, Lebanon;
| | - Zahi Nakad
- Electrical and Computer Engineering Department, School of Engineering, Lebanese American University, Chouran, Beirut 1102-2801, Lebanon;
| | - Rita Stephan
- Pharmaceutical Sciences Department, School of Pharmacy, Lebanese American University, Chouran, Beirut 1102-2801, Lebanon; (E.O.); (R.S.)
| | - Rony S. Khnayzer
- Department of Natural Sciences, Lebanese American University, Chouran, Beirut 1102-2801, Lebanon;
- Correspondence: (Y.S.); (R.S.K.)
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Environmental Contamination and Chronic Exposure to Endocrine-Disrupting Phthalates: An Overlooked and Emerging Determinant for Hormone-Sensitive Cancers. J Indian Inst Sci 2022. [DOI: 10.1007/s41745-022-00319-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Assessment of Cytotoxic, Genotoxic, and Oxidative Stress of Dibutyl Phthalate on Cultured Bovine Peripheral Lymphocytes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9961513. [PMID: 35368873 PMCID: PMC8970799 DOI: 10.1155/2022/9961513] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/15/2022] [Accepted: 03/04/2022] [Indexed: 11/18/2022]
Abstract
Recently, there have been numerous reports showing that phthalates have negative human health impacts and may cause several diseases such as asthma, breast cancer, obesity, type II diabetes, and male infertility. Animals are also exposed to phthalates through the environment and can cause adverse health effects on them. Several studies have been found on the cytogenetic effects of dibutyl phthalate (DBP) on different organisms but no documented evidence has been found on the cytotoxic and genotoxic effects of dibutyl phthalate (DBP) on bovine cultured lymphocytes. MTT assay was performed on different series of DBP concentrations (10 μM, 20 μM, 30 μM, 50 μM, 70 μM, 100 μM). A concentration-dependent decrease in cell viability was observed by the DBP. The LD50, LD50/2, and 2∗LD50 were found to be 50 μM, 30 μM, and 80 μM on bovine lymphocytes, respectively. Then, these concentrations of DBP were utilized to perform comet, micronucleus assays, and oxidative stress. A concentration-dependent increase in DNA damage, oxidative stress, and micronuclei formation was observed in lymphocytes by the DBP as compared to the control group. Highest genotoxic effects were observed at a concentration of 2∗LD50. Similarly, total oxidative stress was found higher, and antioxidative stress was lower in concentration-dependent manner by the DBP. The current study revealed a significant cytotoxic, genotoxic, and oxidative stress of DBP on cultured bovine lymphocytes.
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Pietrini F, Iannilli V, Passatore L, Carloni S, Sciacca G, Cerasa M, Zacchini M. Ecotoxicological and genotoxic effects of dimethyl phthalate (DMP) on Lemna minor L. and Spirodela polyrhiza (L.) Schleid. plants under a short-term laboratory assay. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150972. [PMID: 34656584 DOI: 10.1016/j.scitotenv.2021.150972] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/08/2021] [Accepted: 10/10/2021] [Indexed: 06/13/2023]
Abstract
The environmental occurrence of phthalates (PAE) is of great concern for the ecosystem and human health. Despite of their recognized toxicity on biota, a lack of knowledge is still present about the effects of PAE on plants. In this scenario, the effects of dimethyl phthalate (DMP) on duckweed plants (Lemna minor L. and Spirodela polyrhiza (L.) Schleid.), two model plant species for ecotoxicological and trophic studies, were investigated. Under a 7-day lab assay, morphological (biometric indicators), physiological (pigment content and photosynthetic performance) and molecular (DNA damage) parameters were studied. No effects were observed at growth and physiological level in both plants at 3 and 30 mg/L DMP. On the contrary, at 600 mg/L DMP, a concentration used for plant acute toxicity studies, a remarkable growth inhibition and pigment content and photosynthetic parameters reduction compared to control were observed in both plants species, particularly in Spirodela. Alkaline Comet assay in 24 h-treated plants revealed a genotoxic damage induced by DMP, particularly relevant in Spirodela. These results described for the first time the adverse effects exerted by DMP on aquatic plants, contributing to highlight the environmental risk associated to the presence of this compound in the aquatic ecosystem.
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Affiliation(s)
- Fabrizio Pietrini
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), via Salaria km 29.300, 00015 Monterotondo Scalo, Rome, Italy
| | - Valentina Iannilli
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development C.R. Casaccia, Via Anguillarese, 301, 00123 Rome, Italy
| | - Laura Passatore
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), via Salaria km 29.300, 00015 Monterotondo Scalo, Rome, Italy
| | - Serena Carloni
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), via Salaria km 29.300, 00015 Monterotondo Scalo, Rome, Italy
| | - Giulia Sciacca
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development C.R. Casaccia, Via Anguillarese, 301, 00123 Rome, Italy
| | - Marina Cerasa
- Institute on Atmospheric Pollution (IIA), National Research Council of Italy (CNR), via Salaria km 29.300, 00015 Monterotondo Scalo, Rome, Italy
| | - Massimo Zacchini
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), via Salaria km 29.300, 00015 Monterotondo Scalo, Rome, Italy.
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15
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Lu XM, Jiang XQ, Liu XP. Response process and adaptation mechanism of estuarine benthic microbiota to polyvinyl chloride microplastics with and without phthalates. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150693. [PMID: 34599949 DOI: 10.1016/j.scitotenv.2021.150693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/22/2021] [Accepted: 09/26/2021] [Indexed: 06/13/2023]
Abstract
This study aimed to explore the response mechanisms of the microbiota in estuarine sediments amended with polyvinyl chloride (PVC) microplastics (MPs) with and without phthalates (PAEs) through a 60-day microcosm experiment. The results indicated that addition of MPs increased the porosity of the sediment. However, the sediment porosity decreased with the length of the amendment period. Following amendment with MPs containing PAEs, the sediment PAE content increased over time. The addition of MPs without PAEs increased the relative abundance of the dominant phyla of bacteria (Actinobacteria, Bacteroidetes, Chloroflexi, Firmicutes, Gemmatimonadetes, and Planctomycetes) and eukaryotes (Ascomycota, Bacillariophyta, Chordata, and Streptophyta), whereas the relative abundance decreased over time following the addition of MPs containing PAEs. The PAEs released from MPs had greater effects on these phyla than the MPs themselves. The dominant bacteria were more sensitive to MPs than the dominant eukaryotes. After a 60-day amendment with MPs containing PAEs, the bacterial and eukaryotic species numbers were lower by 5.4% and 3.4%, respectively, the relative abundance of certain genes involved in metabolism was lower, and the relative abundance of stress-related genes was higher. These findings provide insight into the microbial response and adaptation mechanisms in estuarine environments polluted with MPs.
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Affiliation(s)
- Xiao-Ming Lu
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou 350118, China.
| | - Xiao-Qiang Jiang
- School of Urban Operations Management, Shanghai Urban Construction Vocational College, Shanghai 200438, China
| | - Xue-Ping Liu
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou 350118, China
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Sun CC, Zhao S, Chu LL, Zhang SY, Li YL, Sun MF, Wang QN, Huang Y, Zhang J, Wang H, Gao L, Xu DX, Zhang SC, Xu T, Zhao LL. Di (2-ethyl-hexyl) phthalate disrupts placental growth in a dual blocking mode. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126815. [PMID: 34396966 DOI: 10.1016/j.jhazmat.2021.126815] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/01/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Di (2-ethyl-hexyl) phthalate (DEHP) is a widely used plasticizer. Maternal DEHP exposure inhibits cell proliferation and reduces placentas size, which associates with fetal growth restriction and adulthood diseases. However, the mechanism of placental cell proliferation inhibition by DEHP remains elusive. This study investigated the effect of DEHP on placental cell proliferation from cell cycle arrest. Utilizing in vitro and in vivo experiments, we investigated cell cycle arrest, DNA double-strand break (DSB) repair, genotoxic stress response, and micronuclei formation. Most DEHP metabolizes to mono (2-Ethylhexyl) phthalate (MEHP) and distributes to organs quickly, so MEHP and DEHP were used in cultured cell and animal experiments, respectively. Here, a double blocking mode for the proliferation inhibition of the placental cell was revealed. One is that the classical DSB repair pathways were suppressed, which arrested the cell cycle at the G2/M phase. The other is that DEHP stimulated an elevated level of progesterone, which blocked the cell cycle at metaphase by disrupting chromosome arrangement. These two sets of events facilitated micronuclei formation and resulted in cell proliferation inhibition. This findings provide a novel mechanistic understanding for DEHP to inhibit placental cell proliferation.
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Affiliation(s)
- Cong-Cong Sun
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China; School of Biology, Food and Environment, Hefei University, Hefei 230601, China; Tongxiang Centre for Disease Control and Prevention, Tongxiang 314500, Zhejiang Province, China
| | - Shuai Zhao
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China; School of Biology, Food and Environment, Hefei University, Hefei 230601, China
| | - Ling-Luo Chu
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA
| | - Shan-Yu Zhang
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China; School of Biology, Food and Environment, Hefei University, Hefei 230601, China
| | - Yan-Ling Li
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China
| | - Mei-Fang Sun
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China
| | - Qu-Nan Wang
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China
| | - Yichao Huang
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China
| | - Jun Zhang
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China
| | - Hua Wang
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China
| | - Lan Gao
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China
| | - De-Xiang Xu
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China
| | - Shi-Chen Zhang
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China
| | - Tao Xu
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China; School of Biology, Food and Environment, Hefei University, Hefei 230601, China.
| | - Ling-Li Zhao
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes/Department of Toxicology/Anhui Provincial Key Laboratory of Population Health and Aristogenics/MOE Key Laboratory of Population Health Across Life Cycle, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China.
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Sousa-Vidal ÉK, Henrique G, da Silva REC, Serrano-Nascimento C. Intrauterine exposure to di(2-ethylhexyl) phthalate (DEHP) disrupts the function of the hypothalamus-pituitary-thyroid axis of the F1 rats during adult life. Front Endocrinol (Lausanne) 2022; 13:995491. [PMID: 36714560 PMCID: PMC9880230 DOI: 10.3389/fendo.2022.995491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 12/07/2022] [Indexed: 01/15/2023] Open
Abstract
INTRODUCTION DEHP is an endocrine disruptor widely used in the production of malleable plastics. DEHP exposure was associated with altered hypothalamic-pituitary-thyroid (HPT) axis function. Although previous studies reported deleterious effects of DEHP exposure during the intrauterine period, few studies have evaluated the direct effects triggered by this endocrine disruptor on the offspring animals' thyroid function. This study aimed to investigate the impact of intrauterine exposure to DEHP on the HPT axis function programming of the offspring animals during adulthood. METHODS Pregnant Wistar rats were orally treated with corn oil or corn oil supplemented with DEHP (0.48 or 4.8 mg/kg/day) throughout the gestational period. The offspring rats were euthanized on the 90th postnatal day. Hypothalamus, pituitary, thyroid, and liver were collected to analyze gene expression and protein content through qPCR and Western Blot. Blood was collected to determine TSH and thyroid hormone levels through fluorometric or chemiluminescence immunoassays. RESULTS In the adult F1 female rats, the highest dose of DEHP decreased TSH serum levels. In the thyroid, DEHP reduced the gene expression and/or protein content of NIS, TSHR, TG, TPO, MCT8, NKX2.1, PAX8, and FOXE1. These data are consistent with the reduction in T4 serum levels of the F1 DEHP-exposed female rats. In the liver, DEHP exposure increased the mRNA expression of Dio1 and Ttr, while the highest dose of DEHP reduced the mRNA expression of Ugt1a1 and Ugt1a6. Conversely, in the F1 male adult rats, TSHB expression and TSH serum levels were increased in DEHP-exposed animals. In the thyroid, except for the reduced protein content of TSHR, none of the evaluated genes/proteins were altered by DEHP. TH serum levels were not changed in the DEHP-exposed F1 male rats compared to the control group. Additionally, there were no significant alterations in the expression of hepatic enzymes in these animals. DISCUSSION/CONCLUSIONS Our results demonstrated, for the first time, that intrauterine exposure to DEHP disrupts the HPT axis function in male and female offspring rats and strongly suggest that DEHP exposure increases the susceptibility of the offspring animals to develop thyroid dysfunctions during adulthood.
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Affiliation(s)
- Érica Kássia Sousa-Vidal
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Guilherme Henrique
- Laboratório de Endocrinologia Molecular e Translacional (LEMT), Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Renata Elen Costa da Silva
- Laboratório de Endocrinologia Molecular e Translacional (LEMT), Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Caroline Serrano-Nascimento
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, Brazil
- Laboratório de Endocrinologia Molecular e Translacional (LEMT), Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas (ICAQF), Departamento de Ciências Biológicas, Universidade Federal de São Paulo (UNIFESP), Diadema, Brazil
- *Correspondence: Caroline Serrano-Nascimento,
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Binder S, Cao X, Bauer S, Rastak N, Kuhn E, Dragan GC, Monsé C, Ferron G, Breuer D, Oeder S, Karg E, Sklorz M, Di Bucchianico S, Zimmermann R. In vitro genotoxicity of dibutyl phthalate on A549 lung cells at air-liquid interface in exposure concentrations relevant at workplaces. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2021; 62:490-501. [PMID: 34636079 DOI: 10.1002/em.22464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/14/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
The ubiquitous use of phthalates in various materials and the knowledge about their potential adverse effects is of great concern for human health. Several studies have uncovered their role in carcinogenic events and suggest various phthalate-associated adverse health effects that include pulmonary diseases. However, only limited information on pulmonary toxicity is available considering inhalation of phthalates as the route of exposure. While in vitro studies are often based on submerged exposures, this study aimed to expose A549 alveolar epithelial cells at the air-liquid interface (ALI) to unravel the genotoxic and oxidative stress-inducing potential of dibutyl phthalate (DBP) with concentrations relevant at occupational settings. Within this scope, a computer modeling approach calculating alveolar deposition of DBP particles in the human lung was used to define in vitro ALI exposure conditions comparable to potential occupational DBP exposures. The deposited mass of DBP ranged from 0.03 to 20 ng/cm2 , which was comparable to results of a human lung particle deposition model using an 8 h workplace threshold limit value of 580 μg/m3 proposed by the Scientific Committee on Occupational Exposure Limits for the European Union. Comet and Micronucleus assay revealed that DBP induced genotoxicity at DNA and chromosome level in sub-cytotoxic conditions. Since genomic instability was accompanied by increased generation of the lipid peroxidation marker malondialdehyde, oxidative stress might play an important role in phthalate-induced genotoxicity. The results highlight the importance of adapting in vitro studies to exposure scenarios relevant at occupational settings and reconsidering occupational exposure limits for DBP.
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Affiliation(s)
- Stephanie Binder
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
- Joint Mass Spectrometry Center at Analytical Chemistry, Institute of Chemistry, University of Rostock, Rostock, Germany
| | - Xin Cao
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
- Joint Mass Spectrometry Center at Analytical Chemistry, Institute of Chemistry, University of Rostock, Rostock, Germany
| | - Stefanie Bauer
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Narges Rastak
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Evelyn Kuhn
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
| | - George C Dragan
- Federal Institute for Occupational Safety and Health (BAuA) - Measurement of Hazardous Substances, Dortmund, Germany
| | - Christian Monsé
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance (IFA), Institute of the Ruhr-Universität Bochum (IPA), Bochum, Germany
| | - George Ferron
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Dietmar Breuer
- Institute of Occupational Safety of the German Social Accident Insurance (IFA), Sankt Augustin, Germany
| | - Sebastian Oeder
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Erwin Karg
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Martin Sklorz
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Sebastiano Di Bucchianico
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Ralf Zimmermann
- Joint Mass Spectrometry Center at Comprehensive Molecular Analytics, Helmholtz Zentrum München, Neuherberg, Germany
- Joint Mass Spectrometry Center at Analytical Chemistry, Institute of Chemistry, University of Rostock, Rostock, Germany
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Cheng Z, Chen JR, Zheng C, Yang ZB, Xu XX, Wong MH. Bioaccumulation and health risk assessment of phthalate esters in cultured low trophic level fish feded with food waste-based diets. CHEMOSPHERE 2021; 276:130189. [PMID: 33725627 DOI: 10.1016/j.chemosphere.2021.130189] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
The present study aimed at using different types of food waste as a protein source for the fish feeds to produce safe and quality fish. The results showed the concentrations of ∑PAEs in grass crap (0.24 μg g-1 ww) and bighead carp (0.15 μg g-1 ww) fed with Food waste B feeds (mainly containing fruit, vegetable and cereal waste) was significantly lower than those fed Food waste A feeds (mainly containing meat waste) and control feeds (p<0.05), and the highest ∑PAEs concentration (1.75 μg g-1 ww) was found in the mud carp fed with control feeds in experimental ponds (p<0.05). In addition, there was no biomagnification of PAEs in the food chains within the ponds. The health risk assessment results showed no non-carcinogenic and carcinogenic risks from the PAEs via ingestion of the fish fed with food waste feeds for the local residents.
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Affiliation(s)
- Zhang Cheng
- College of Environment Science, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Jia-Rui Chen
- College of Environment Science, Sichuan Agricultural University, Chengdu, 611130, China
| | - Chao Zheng
- College of Environment Science, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhan-Biao Yang
- College of Environment Science, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiao-Xun Xu
- College of Environment Science, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ming-Hung Wong
- Consortium on Health, Environment, Education and Research (CHEER), Department of Science and Environmental Studies, Hong Kong Institute of Education, Tai Po, Hong Kong, China.
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Darbre PD. Endocrine disrupting chemicals and breast cancer cells. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2021; 92:485-520. [PMID: 34452695 DOI: 10.1016/bs.apha.2021.04.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Many hundreds of endocrine disrupting chemicals (EDCs) have been measured as entering human breast tissue from a range of environmental sources, and this review focuses on discussion of mechanisms by which such EDCs may be contributing to the globally rising incidence of breast cancer. Many of the distinguishing features of breast cancer may be accounted for by EDC exposure, including, but not limited to, the fact that many EDCs possess estrogenic activity and exposure to estrogen is a main risk factor for breast cancer. Studies of the actions of EDCs in human breast cancer cells are aided by use of the conceptual framework of the hallmarks of cancer, and, acting by a variety of genomic and nongenomic mechanisms, EDCs have now been shown to enable all the hallmarks of cancer to develop in human breast cancer cells. Many studies report that hallmarks can develop at concentrations which are within the range of those measured in human breast tissues, especially when added as mixtures. The varied levels of different EDCs measured in individual breast tissue samples together with the overlapping and complementary mechanisms of action of the EDCs imply that thematic mechanisms will be driven inevitably by different chemical mixtures. Despite the complexity, EDCs do need to now be acknowledged as a risk factor for breast cancer in order for preventative strategies to include reduction in EDC exposure.
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Affiliation(s)
- Philippa D Darbre
- School of Biological Sciences, University of Reading, Reading, United Kingdom.
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21
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Garcia-Gonzalez N, Prete R, Perugini M, Merola C, Battista N, Corsetti A. Probiotic antigenotoxic activity as a DNA bioprotective tool: a minireview with focus on endocrine disruptors. FEMS Microbiol Lett 2021; 367:5775479. [PMID: 32124914 PMCID: PMC7082702 DOI: 10.1093/femsle/fnaa041] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/02/2020] [Indexed: 12/26/2022] Open
Abstract
Nowadays, the interest in the role of dietary components able to influence the composition and the activity of the intestinal microbiota and, consequently, to modulate the risk of genotoxicity and colon cancer is increasing in the scientific community. Within this topic, the microbial ability to have a protective role at gastrointestinal level by counteracting the biological activity of genotoxic compounds, and thus preventing the DNA damage, is deemed important in reducing gut pathologies and is considered a new tool for probiotics and functional foods. A variety of genotoxic compounds can be found in the gut and, besides food-related mutagens and other DNA-reacting compounds, there is a group of pollutants commonly used in food packaging and/or in thousands of everyday products called endocrine disruptors (EDs). EDs are exogenous substances that alter the functions of the endocrine system through estrogenic and anti-estrogenic activity, which interfere with normal hormonal function in human and wildlife. Thus, this paper summarizes the main applications of probiotics, mainly lactobacilli, as a bio-protective tool to counteract genotoxic and mutagenic agents, by biologically inhibiting the related DNA damage in the gut and highlights the emerging perspectives to enlarge and further investigate the microbial bio-protective role at intestinal level.
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Affiliation(s)
- Natalia Garcia-Gonzalez
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100, Teramo, Italy
| | - Roberta Prete
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100, Teramo, Italy
| | - Monia Perugini
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100, Teramo, Italy
| | - Carmine Merola
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100, Teramo, Italy
| | - Natalia Battista
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100, Teramo, Italy
| | - Aldo Corsetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100, Teramo, Italy
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Sicińska P, Mokra K, Wozniak K, Michałowicz J, Bukowska B. Genotoxic risk assessment and mechanism of DNA damage induced by phthalates and their metabolites in human peripheral blood mononuclear cells. Sci Rep 2021; 11:1658. [PMID: 33462290 PMCID: PMC7814068 DOI: 10.1038/s41598-020-79932-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 12/15/2020] [Indexed: 01/20/2023] Open
Abstract
The human genome is persistently exposed to damage caused by xenobiotics, therefore the assessment of genotoxicity of substances having a direct contact with humans is of importance. Phthalates are commonly used in industrial applications. Widespread exposure to phthalates has been evidenced by their presence in human body fluids. We have assessed the genotoxic potential of selected phthalates and mechanism of their action in human peripheral blood mononuclear cells (PBMCs). Studied cells were incubated with di-n-butyl phthalate (DBP), butylbenzyl phthalate (BBP) and their metabolites: mono-n-butylphthalate (MBP), mono-benzylphthalate (MBzP) in the concentrations range of 0.1-10 µg/mL for 24 h. Analyzed compounds induced DNA single and double strand-breaks (DBP and BBP ≥ 0.5 µg/mL, MBP and MBzP ≥ 1 µg/mL) and more strongly oxidized purines than pyrimidines. None of the compounds examined was capable of creating adducts with DNA. All studied phthalates caused an increase of total ROS level, while hydroxyl radical was generated mostly by DBP and BBP. PBMCs exposed to DBP and BBP could not completely repair DNA strand-breaks during 120 min of postincubation, in opposite to damage caused by their metabolites, MBP and MBzP. We have concluded that parent phthalates: DBP and BBP caused more pronounced DNA damage compared to their metabolites.
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Affiliation(s)
- Paulina Sicińska
- Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska Str. 141/143, 90-236, Lodz, Poland.
| | - Katarzyna Mokra
- Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska Str. 141/143, 90-236, Lodz, Poland
| | - Katarzyna Wozniak
- Department of Molecular Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska Str. 141/143, 90-236, Lodz, Poland
| | - Jaromir Michałowicz
- Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska Str. 141/143, 90-236, Lodz, Poland
| | - Bożena Bukowska
- Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska Str. 141/143, 90-236, Lodz, Poland
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Wu CF, Hsiung CA, Tsai HJ, Cheng CM, Chen BH, Hu CW, Huang YL, Wu MT. Decreased levels of urinary di-2-ethylhexyl phthalate (DEHP) metabolites and biomarkers of oxidative stress in children exposed to DEHP-tainted foods in Taiwan in 2011: A 44-month follow-up. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115204. [PMID: 32745991 DOI: 10.1016/j.envpol.2020.115204] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 06/05/2020] [Accepted: 07/06/2020] [Indexed: 05/20/2023]
Abstract
A major health scandal involving DEHP-tainted (di-2-ethylhexyl phthalate) foodstuffs occurred in Taiwan in 2011. We investigated temporal relationships between urinary DEHP metabolites and biomarkers of oxidative stress in two cohorts of potentially affected children during that food scandal. One cohort was collected from Kaohsiung Medical University Hospital in southern Taiwan between May and June of 2011 (the KMUH cohort). This cohort was followed up at 2, 6, and 44 months. The other cohort was collected from a nationwide health survey conducted by Taiwan's National Health Research Institutes (the NHRI cohort) for potentially affected people between August 2012 and January 2013. Both cohorts only included children 10 years old and younger who had provided enough urine for analysis of urinary DEHP oxidative metabolites and two markers of oxidative stress: 8-oxo-2'-deoxyguanosine (8-OHdG) and malondialdehyde (MDA). The KMUH cohort had a simultaneous and significant decrease in urinary DEHP metabolites, 8-OHdG, and MDA, with the lowest concentrations found at the 6-month follow up and maintained until the 44-month follow up, consistent with those from NHRI cohort at ∼15-18 months post-scandal (p > 0.05). There were decreases in both DEHP metabolites and oxidative stress markers across the populations, but no association was observed between DEHP metabolites and oxidative stress markers in individuals in the two cohorts. Continued follow-up is needed to determine long-term health consequences in these children.
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Affiliation(s)
- Chia-Fang Wu
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Chao A Hsiung
- Division of Biostatistics and Bioinformatics, Institute of Population Health Sciences, Miaoli, Taiwan.
| | - Hui-Ju Tsai
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Ching-Mei Cheng
- Department of Laboratory Medicine, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung, Taiwan.
| | - Bai-Hsiun Chen
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Chiung-Wen Hu
- Department of Public Health, Chung Shun Medical University, Taichung, Taiwan.
| | - Yeou-Lih Huang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Ming-Tsang Wu
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Ph.D. Program in Environmental and Occupational Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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24
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Kumar M, Sarma DK, Shubham S, Kumawat M, Verma V, Prakash A, Tiwari R. Environmental Endocrine-Disrupting Chemical Exposure: Role in Non-Communicable Diseases. Front Public Health 2020; 8:553850. [PMID: 33072697 PMCID: PMC7541969 DOI: 10.3389/fpubh.2020.553850] [Citation(s) in RCA: 119] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/18/2020] [Indexed: 01/09/2023] Open
Abstract
The exponential growth of pollutant discharges into the environment due to increasing industrial and agricultural activities is a rising threat for human health and a biggest concern for environmental health globally. Several synthetic chemicals, categorized as potential environmental endocrine-disrupting chemicals (EDCs), are evident to affect the health of not only livestock and wildlife but also humankind. In recent years, human exposure to environmental EDCs has received increased awareness due to their association with altered human health as documented by several epidemiological and experimental studies. EDCs are associated with deleterious effects on male and female reproductive health; causes diabetes, obesity, metabolic disorders, thyroid homeostasis and increase the risk of hormone-sensitive cancers. Sewage effluents are a major source of several EDCs, which eventually reach large water bodies and potentially contaminate the drinking water supply. Similarly, water storage material such as different types of plastics also leaches out EDCs in drinking Water. Domestic wastewater containing pharmaceutical ingredients, metals, pesticides and personal care product additives also influences endocrine activity. These EDCs act via various receptors through a variety of known and unknown mechanisms including epigenetic modification. They differ from classic toxins in several ways such as low-dose effect, non-monotonic dose and trans-generational effects. This review aims to highlight the hidden burden of EDCs on human health and discusses the non-classical toxic properties of EDCs in an attempt to understand the magnitude of the exposome on human health. Present data on the environmental EDCs advocate that there may be associations between human exposure to EDCs and several undesirable health outcomes that warrants further human bio-monitoring of EDCs.
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Affiliation(s)
- Manoj Kumar
- National Institute for Research in Environmental Health, Indian Council of Medical Research, Bhopal, India
| | - Devojit Kumar Sarma
- National Institute for Research in Environmental Health, Indian Council of Medical Research, Bhopal, India
| | - Swasti Shubham
- National Institute for Research in Environmental Health, Indian Council of Medical Research, Bhopal, India
| | - Manoj Kumawat
- National Institute for Research in Environmental Health, Indian Council of Medical Research, Bhopal, India
| | - Vinod Verma
- Department of Stem Cell Research Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Anil Prakash
- National Institute for Research in Environmental Health, Indian Council of Medical Research, Bhopal, India
| | - Rajnarayan Tiwari
- National Institute for Research in Environmental Health, Indian Council of Medical Research, Bhopal, India
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25
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Radha MJ, Mahaboob Basha P. Hepatotoxic evaluation of Di- n-butyl phthalate in Wistar rats upon sub-chronic exposure: A multigenerational assessment. Toxicol Rep 2020; 7:772-778. [PMID: 32637323 PMCID: PMC7327266 DOI: 10.1016/j.toxrep.2020.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 05/11/2020] [Accepted: 06/19/2020] [Indexed: 01/24/2023] Open
Abstract
The extensive use of di--n-butyl phthalate (DBP) as a plasticizer in medical devices, personal care products, and industries, which is a major threat to humankind as it leaches out easily from the plastic matrix into the environment. Health risks posed to adults and children from the broad usage of DBP in cosmetics and infant toys observed predominantly due to repeated and prolonged exposure. Hence, this study was undertaken to evaluate the potential effect of DBP in the hepatic tissue of rats up to three generations. Wistar rats were induced at a dose of 500 mg DBP /kg body weight dissolved in olive oil by oral gavage throughout gestation (GD 6–21), lactation and post-weaning and reared by crossing intoxicated rats up to three generations. Results of the present study showed a significant increase in the relative weight of liver, while decreased levels of antioxidant enzymes viz., superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and reduced glutathione (GSH) was evident in DBP treated rats at P < 0.05. Besides hepatic marker enzymes viz., alanine transaminase (ALT) and aspartate transaminase (AST) were elevated significantly in experimental rats compared to those of the control group. Furthermore, histological studies revealed congested central veins and dilated sinusoids in F1 progeny while mild to severe focal inflammatory infiltrations were evident in F2 & F3 rats. Negative correlation observed between the levels of antioxidant enzymes and transaminase activity. In brief, DBP exposure elicits oxidative stress and alters the transaminase activity levels causing damage in hepatic tissue. F3 progeny found to high vulnerability to the exposure of DBP than F2 & F1 rats.
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Affiliation(s)
- M J Radha
- Department of Zoology, Bangalore University, Bangalore-560 056, Department of Biotechnology and Genetics, Ramaiah College of Arts, Science and Commerce, Bangalore, 560 054, India
| | - P Mahaboob Basha
- Department of Zoology, Bangalore University, Bangalore, 560 056, India
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26
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Barrett ES, Padula AM. Joint Impact of Synthetic Chemical and Non-chemical Stressors on Children's Health. Curr Environ Health Rep 2019; 6:225-235. [PMID: 31637664 DOI: 10.1007/s40572-019-00252-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
PURPOSE OF REVIEW Pregnant women are exposed to numerous synthetic chemicals (e.g., pesticides, phthalates, polychlorinated biphenyls) in their daily lives as well as a range of non-chemical stressors, including poverty, depression, discrimination, and stressful life events. Although many studies have examined individual exposures to chemical and non-chemical stressors in relation to child health outcomes, very few studies have considered these exposures together. Here, we review the recent epidemiologic literature on the joint impact of chemical and non-chemical stressors on child outcomes. RECENT FINDINGS Considerable co-exposure to chemical and non-chemical stressors occurs in vulnerable populations. Non-chemical stressors may modify the impact of chemical exposures on children's health, typically exacerbating their negative impact, but associations differ considerably by the chemicals and populations of interest. Additional research is urgently needed to better understand the cumulative risks of multiple stressors on children's health and the underlying physiological mechanisms.
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Affiliation(s)
- Emily S Barrett
- Department of Biostatistics and Epidemiology, Environmental and Occupational Health Sciences Institute, Rutgers School of Public Health, 170 Frelinghuysen Road, Piscataway, NJ, 08854, USA.
| | - Amy M Padula
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, San Francisco, CA, USA
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27
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Menezo Y, Dale B, Elder K. The negative impact of the environment on methylation/epigenetic marking in gametes and embryos: A plea for action to protect the fertility of future generations. Mol Reprod Dev 2019; 86:1273-1282. [PMID: 30653787 DOI: 10.1002/mrd.23116] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 01/15/2019] [Indexed: 12/31/2022]
Abstract
Life expectancy has increased since World War II, and this may be attributed to several aspects of modern lifestyles. However, now we are faced with a downturn, which seems to be the result of environmental issues. This paradigm is paralleled with reduced human fertility, decreased sperm quality, increased premature ovarian failure, and diminished ovarian reserve syndromes. Endocrine disruptor chemicals and other toxic chemicals, herbicides, pesticides, plasticizers, to mention a few, are a rising concern in today's environment. Some of these are commonly used in the domestic setting: cleaning material and cosmetics and they have a known impact on epigenesis and imprinting via perturbation of methylation processes. Pollution from polyaromatic hydrocarbons, particulate matter <10 and <2.5 μm, and ozone released into the air, all affect fertility. Poor food processing management is a source of DNA adduct formation, which impairs the quality of gametes. An important concern is the nanoparticles that are present in food and are thought to induce oxidative stress. Now is the time to take a step backward. Global management of the environment and food production is required urgently to protect the fertility of future generations.
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Affiliation(s)
- Yves Menezo
- Scientific Consultant Assited Reproductive Technology, Laboratoire Clement, Paris, France.,Scientific Consultant Assited Reproductive Technology, London Fertility Associates, London, UK
| | - Brian Dale
- Head of the ART and Genetic Program, Clinica Villa del Sole, Napoli, Italy
| | - Kay Elder
- Scientific Consultant, Bourn Hall Clinic, Cambridge, UK
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28
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Al-Saleh I, Coskun S, Al-Doush I, Al-Rajudi T, Al-Rouqi R, Abduljabbar M, Al-Hassan S. Exposure to phthalates in couples undergoing in vitro fertilization treatment and its association with oxidative stress and DNA damage. ENVIRONMENTAL RESEARCH 2019; 169:396-408. [PMID: 30529141 DOI: 10.1016/j.envres.2018.11.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/13/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
This prospective study of 599 couples seeking fertility treatment and who were recruited between 2015 and 2017 was conducted to (a) explore the associations between phthalate exposure and in vitro fertilization (IVF) outcomes; and (b) examine the implication of oxidative stress as a mediator of these. We measured eight phthalate metabolites in two spot urine samples; oxidative stress biomarkers such as malondialdehyde, 8-hydroxy-2-deoxyguanosine, hydrogen peroxide, catalase (CAT), and total antioxidant capacity in follicular fluid and seminal plasma. We also examined DNA damage in sperm and granulosa cells. Couples were exposed to a broad range of phthalate compounds and seven metabolites were detected in over 94% of the urine samples, whereas monobenzyl phthalate was found in only 24% of women and 26% of men. Our results showed high levels of seven urinary phthalate metabolites (except monobenzyl phthalate) and a notable increase in many oxidative stress markers in both follicular fluid and seminal plasma. However, their associations with exposure were rather limited. Multivariate binomial regression modeling showed higher levels of follicular CAT levels reduced the probability of fertilization rate (≤ 50%) [Adjusted relative risk (RRadj) = 0.52, p = 0.005] and unsuccessful live birth (RRadj = 0.592, p = 0.023). We observed a 46% decrease in the probability of clinical pregnancy in association with an elevated percentage of DNA in the tail (RRadj = 0.536, p = 0.04). There was a 32% and 22% increase in the probability of clinical pregnancy and unsuccessful live birth associated with higher levels of mono-(2-ethylhexyl) phthalate (RRadj = 1.32, p = 0.049) and monoethyl phthalate (RRadj = 1.22, p = 0.032) in women, respectively. In contrast, the probability of clinical pregnancy reduced by 20% with higher levels of mono-(2-ethyl-5-carboxypentyl) phthalate (RRadj = 0.797, p = 0.037) and 19.6% with mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP) (RRadj = 0.804, p = 0.041) in men. Other oxidative stress biomarkers or urinary phthalate metabolites showed suggestive relationships with certain IVF outcomes. Lastly, our results demonstrated that elevated levels of CAT in follicular fluid might have a positive impact on fertilization rate ≥ 50% and successful live birth. CAT seems to play a potential role in mediating the relationship between the risk of poor fertilization rate and MEOHP and mono-isobutyl phthalate. Additional data are required to understand the clinical implications of oxidative stress and its contribution to the reproductive toxicity of phthalate exposure.
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Affiliation(s)
- Iman Al-Saleh
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia.
| | - Serdar Coskun
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Inaam Al-Doush
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Tahreer Al-Rajudi
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Reem Al-Rouqi
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Mai Abduljabbar
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Saad Al-Hassan
- Reproductive Medicine Unit, Department of Obstetrics & Gynecology, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
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29
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Aydemir D, Karabulut G, Şimşek G, Gok M, Barlas N, Ulusu NN. Impact of the Di(2-Ethylhexyl) Phthalate Administration on Trace Element and Mineral Levels in Relation of Kidney and Liver Damage in Rats. Biol Trace Elem Res 2018; 186:474-488. [PMID: 29654488 DOI: 10.1007/s12011-018-1331-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 03/27/2018] [Indexed: 12/18/2022]
Abstract
Di(2-ethylhexyl) phthalate (DEHP) is a widely used synthetic polymer in the industry. DEHP may induce reproductive and developmental toxicity, obesity, carcinogenesis and cause abnormal endocrine function in both human and wildlife. The aim of this study was to investigate trace element and mineral levels in relation of kidney and liver damage in DEHP-administered rats. Therefore, prepubertal male rats were dosed with 0, 100, 200, and 400 mg/kg/day of DEHP. At the end of the experiment, trace element and mineral levels, glucose-6-phosphate dehydrogenase (G6PD), 6-phosphogluconate dehydrogenase (6-PGD), glutathione reductase (GR) and glutathione S-transferase (GST) enzyme activities were evaluated in the serum, liver, and kidney samples of rats. Furthermore, serum clinical biochemistry parameters, organ/body weight ratios and histological changes were investigated to evaluate impact of DEHP more detailed. Our data indicated that sodium (Na), calcium (Ca), potassium (K), lithium (Li), rubidium (Rb) and cesium (Cs) levels significantly decreased, however iron (Fe) and selenium (Se) concentrations significantly increased in DEHP-administered groups compared to the control in the serum samples. On the other hand, upon DEHP administration, selenium concentration, G6PD and GR activities were significantly elevated, however 6-PGD activity significantly decreased compared to the control group in the kidney samples. Decreased G6PD activity was the only significant change between anti-oxidant enzyme activities in the liver samples. Upon DEHP administration, aberrant serum biochemical parameters have arisen and abnormal histological changes were observed in the kidney and liver tissue. In conclusion, DEHP may induce liver and kidney damage, also result abnormalities in the trace element and mineral levels.
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Affiliation(s)
- Duygu Aydemir
- School of Medicine, Department of Medical Biochemistry, Koc University, Rumelifeneri Yolu, Sariyer, 34450, Istanbul, Turkey
| | - Gözde Karabulut
- Faculty of Science, Department of Biology, Dumlupınar University, Kütahya, Turkey
| | - Gülsu Şimşek
- Koç University Surface Science and Technology Center (KUYTAM), Rumelifeneri Yolu, Sariyer, 34450, Istanbul, Turkey
| | - Muslum Gok
- Faculty of Medicine, Department of Medical Biochemistry, Hacettepe University, Ankara, Turkey
| | - Nurhayat Barlas
- Faculty of Science, Department of Biology, Hacettepe University, Ankara, Turkey
| | - Nuriye Nuray Ulusu
- School of Medicine, Department of Medical Biochemistry, Koc University, Rumelifeneri Yolu, Sariyer, 34450, Istanbul, Turkey.
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30
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Steves AN, Turry A, Gill B, Clarkson-Townsend D, Bradner JM, Bachli I, Caudle WM, Miller GW, Chan AWS, Easley CA. Per- and polyfluoroalkyl substances impact human spermatogenesis in a stem-cell-derived model. Syst Biol Reprod Med 2018; 64:225-239. [PMID: 29911897 DOI: 10.1080/19396368.2018.1481465] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Per- and polyfluoroalkyl substances (PFASs) represent a highly ubiquitous group of synthetic chemicals used in products ranging from water and oil repellents and lubricants to firefighting foam. These substances can enter and accumulate in multiple tissue matrices in up to 100% of people assessed. Though animal models strongly identify these compounds as male reproductive toxicants, with exposed rodents experiencing declines in sperm count, alterations in hormones, and DNA damage in spermatids, among other adverse outcomes, human studies report conflicting conclusions as to the reproductive toxicity of these chemicals. Using an innovative, human stem-cell-based model of spermatogenesis, we assessed the effects of the PFASs perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), and a mixture of PFOS, PFOA, and PFNA for their impacts on human spermatogenesis in vitro under conditions relevant to the general and occupationally exposed populations. Here, we show that PFOS, PFOA, PFNA, and a mixture of PFOS, PFOA, and PFNA do not decrease in vitro germ cell viability, consistent with reports from human studies. These compounds do not affect mitochondrial membrane potential or increase reactive oxygen species generation, and they do not decrease cell viability of spermatogonia, primary spermatocytes, secondary spermatocytes, or spermatids in vitro under the conditions examined. However, exposure to PFOS, PFOA, and PFNA reduces expression of markers for spermatogonia and primary spermatocytes. While not having direct effects on germ cell viability, these effects suggest the potential for long-term impacts on male fertility through the exhaustion of the spermatogonial stem cell pool and abnormalities in primary spermatocytes. ABBREVIATIONS CDC: Centers for Disease Control; DMSO: dimethyl sulfoxide; GHR: growth hormone receptor; hESCs: human embryonic stem cells; PFASs: per- and polyfluoroalkyl substances; PFCs: perfluorinated compounds; PFNA: perfluorononanoic acid; PFOS: perfluorooctanesulfonic acid; PFOA: perfluorooctanoic acid; PLZF: promyelocytic leukemia zinc finger; ROS: reactive oxygen species; HILI: RNA-mediated gene silencing 2; SSC: spermatogonial stem cell.
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Affiliation(s)
- Alyse N Steves
- a Genetics and Molecular Biology Program , Laney Graduate School, Emory University , Atlanta , GA , USA
| | - Adam Turry
- b College of Public Health , University of Georgia , Athens , GA , USA.,c Regenerative Bioscience Center , University of Georgia , Athens , GA , USA
| | - Brittany Gill
- b College of Public Health , University of Georgia , Athens , GA , USA.,c Regenerative Bioscience Center , University of Georgia , Athens , GA , USA
| | | | - Joshua M Bradner
- d Rollins School of Public Health , Emory University , Atlanta , GA , USA
| | - Ian Bachli
- b College of Public Health , University of Georgia , Athens , GA , USA.,c Regenerative Bioscience Center , University of Georgia , Athens , GA , USA
| | - W Michael Caudle
- d Rollins School of Public Health , Emory University , Atlanta , GA , USA
| | - Gary W Miller
- d Rollins School of Public Health , Emory University , Atlanta , GA , USA
| | - Anthony W S Chan
- e Division of Neuropharmacology and Neurologic Diseases , Yerkes National Primate Research Center , Atlanta , GA , USA.,f Department of Human Genetics , Emory University , Atlanta , GA , USA
| | - Charles A Easley
- b College of Public Health , University of Georgia , Athens , GA , USA.,c Regenerative Bioscience Center , University of Georgia , Athens , GA , USA.,e Division of Neuropharmacology and Neurologic Diseases , Yerkes National Primate Research Center , Atlanta , GA , USA
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Steves AN, Bradner JM, Fowler KL, Clarkson-Townsend D, Gill BJ, Turry AC, Caudle WM, Miller GW, Chan AWS, Easley CA. Ubiquitous Flame-Retardant Toxicants Impair Spermatogenesis in a Human Stem Cell Model. iScience 2018; 3:161-176. [PMID: 29901031 PMCID: PMC5994764 DOI: 10.1016/j.isci.2018.04.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/27/2018] [Accepted: 04/05/2018] [Indexed: 01/08/2023] Open
Abstract
Sperm counts have rapidly declined in Western males over the past four decades. This rapid decline remains largely unexplained, but exposure to environmental toxicants provides one potential explanation for this decline. Flame retardants are highly prevalent and persistent in the environment, but many have not been assessed for their effects on human spermatogenesis. Using a human stem cell-based model of spermatogenesis, we evaluated two major flame retardants, hexabromocyclododecane (HBCDD) and tetrabromobisphenol A (TBBPA), under acute conditions simulating occupational-level exposures. Here we show that HBCDD and TBBPA are human male reproductive toxicants in vitro. Although these toxicants do not specifically affect the survival of haploid spermatids, they affect spermatogonia and primary spermatocytes through mitochondrial membrane potential perturbation and reactive oxygen species generation, ultimately causing apoptosis. Taken together, these results show that HBCDD and TBBPA affect human spermatogenesis in vitro and potentially implicate this highly prevalent class of toxicants in the decline of Western males' sperm counts.
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Affiliation(s)
- Alyse N Steves
- Genetics and Molecular Biology Program, Laney Graduate School, Emory University, Atlanta, GA 30322, USA
| | - Joshua M Bradner
- Department of Environmental Health Science, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Kristen L Fowler
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, GA 30602, USA; Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
| | - Danielle Clarkson-Townsend
- Department of Environmental Health Science, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Brittany J Gill
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, GA 30602, USA; Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
| | - Adam C Turry
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, GA 30602, USA; Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
| | - W Michael Caudle
- Department of Environmental Health Science, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Gary W Miller
- Department of Environmental Health Science, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Anthony W S Chan
- Genetics and Molecular Biology Program, Laney Graduate School, Emory University, Atlanta, GA 30322, USA; Division of Neuropharmacology and Neurologic Diseases, Yerkes National Primate Research Center, GA 30322, USA; Department of Human Genetics, Emory University, Atlanta, GA 30322, USA
| | - Charles A Easley
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, GA 30602, USA; Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA; Division of Neuropharmacology and Neurologic Diseases, Yerkes National Primate Research Center, GA 30322, USA.
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Bläsing M, Amelung W. Plastics in soil: Analytical methods and possible sources. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 612:422-435. [PMID: 28863373 DOI: 10.1016/j.scitotenv.2017.08.086] [Citation(s) in RCA: 612] [Impact Index Per Article: 102.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/09/2017] [Accepted: 08/09/2017] [Indexed: 05/18/2023]
Abstract
At least 300 Mio t of plastic are produced annually, from which large parts end up in the environment, where it persists over decades, harms biota and enters the food chain. Yet, almost nothing is known about plastic pollution of soil; hence, the aims of this work are to review current knowledge on i) available methods for the quantification and identification of plastic in soil, ii) the quantity and possible input pathways of plastic into soil, (including first preliminary screening of plastic in compost), and iii) its fate in soil. Methods for plastic analyses in sediments can potentially be adjusted for application to soil; yet, the applicability of these methods for soil needs to be tested. Consequently, the current data base on soil pollution with plastic is still poor. Soils may receive plastic inputs via plastic mulching or the application of plastic containing soil amendments. In compost up to 2.38-1200mg plastic kg-1 have been found so far; the plastic concentration of sewage sludge varies between 1000 and 24,000 plastic items kg-1. Also irrigation with untreated and treated wastewater (1000-627,000 and 0-125,000 plastic items m-3, respectively) as well as flooding with lake water (0.82-4.42 plastic items m-3) or river water (0-13,751 items km-2) can provide major input pathways for plastic into soil. Additional sources comprise littering along roads and trails, illegal waste dumping, road runoff as well as atmospheric input. With these input pathways, plastic concentrations in soil might reach the per mill range of soil organic carbon. Most of plastic (especially >1μm) will presumably be retained in soil, where it persists for decades or longer. Accordingly, further research on the prevalence and fate of such synthetic polymers in soils is urgently warranted.
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Affiliation(s)
- Melanie Bläsing
- Institute of Crop Science and Resource Conservation (INRES), Soil Science and Soil Ecology, University of Bonn, Nussallee 13, 53115 Bonn, Germany.
| | - Wulf Amelung
- Institute of Crop Science and Resource Conservation (INRES), Soil Science and Soil Ecology, University of Bonn, Nussallee 13, 53115 Bonn, Germany
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Chou CK, Yang YT, Yang HC, Liang SS, Wang TN, Kuo PL, Wang HMD, Tsai EM, Chiu CC. The Impact of Di(2-ethylhexyl)phthalate on Cancer Progression. Arch Immunol Ther Exp (Warsz) 2017; 66:183-197. [PMID: 29209738 DOI: 10.1007/s00005-017-0494-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 08/18/2017] [Indexed: 12/11/2022]
Abstract
Di(2-ethylhexyl)phthalate (DEHP), a widely used plasticizer, mainly serves as an additive to render polyvinyl chloride (PVC) soft and flexible. PVC plastics have become ubiquitous in our modern society. Yet, the leaching of DEHP from PVC-based consumables ultimately results in the deposition in certain tissues via inadvertent applications. Health risks for human populations exposed to DEHP has been assumed by studies on rodents and other species, including the DEHP-induced developmental dysregulation, reproductive impairments, tumorigenesis, and diseases in a transgenerational manner. In this review, we comprehensively summarize the accumulated literature regarding the multifaceted roles of DEHP in the activation of the nuclear receptors, the alteration of the redox homeostasis, epigenetic modifications and the acquisition of chemoresistance.
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Affiliation(s)
- Chon-Kit Chou
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.,Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Ya-Ting Yang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Ho-Chun Yang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Shih-Shin Liang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.,Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Tsu-Nai Wang
- Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.,Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Po-Lin Kuo
- Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Hui-Min David Wang
- Graduate Institute of Biomedical Engineering, National Chung Hsing University, Taichung, 402, Taiwan
| | - Eing-Mei Tsai
- Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Headquarters of Research Centers, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan.
| | - Chien-Chih Chiu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, 804, Taiwan. .,Department of Medical Research, Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
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Al-Saleh I, Al-Rajudi T, Al-Qudaihi G, Manogaran P. Evaluating the potential genotoxicity of phthalates esters (PAEs) in perfumes using in vitro assays. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:23903-23914. [PMID: 28875446 DOI: 10.1007/s11356-017-9978-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 08/21/2017] [Indexed: 06/07/2023]
Abstract
We previously reported high levels of phthalate esters (PAEs) added as solvents or fixatives in 47 brands of perfumes. Diethyl phthalate was the most abundant compound (0.232-23,649 ppm), and 83.3% of the perfumes had levels >1 ppm, the threshold limit cited by a Greenpeace investigation. All samples had dimethyl phthalate levels higher than its threshold limit of 0.1 ppm, and 88, 38, and 7% of the perfumes had benzyl butyl phthalate, di(2-ethylhexyl) phthalate, and dibutyl phthalate levels, respectively, above their threshold limits. The role of PAEs as endocrine disruptors has been well documented, but their effect on genotoxic behavior has received little attention. We used in vitro single-cell gel electrophoresis (comet) and micronucleus (MN) assays with human lymphoblastoid TK6 cells to evaluate the genotoxic potency of 42 of the same perfumes and to determine its association with PAEs. All perfumes induced more DNA damage than a negative control (NEG), ≥ 90% of the samples caused more damage than cells treated with the vehicles possibly used in perfume's preparations such as methanol (ME) and ethanol (ET), and 11.6% of the perfumes caused more DNA damage than a positive control (hydrogen peroxide). Chromosome breakage expressed as MN frequency was higher in cells treated with 71.4, 64.3, 57.1, and 4.8% of the perfumes than in NEG, cells treated with ME or ET, and another positive control (x-rays), respectively. The genotoxic responses in the comet and MN assays were not correlated. The comet assay indicated that the damage in TK6 cells treated with five PAEs at concentrations of 0.05 and 0.2 ppm either individually or as a mixture did not differ significantly from the damage in cells treated with the perfumes. Unlike the comet assay, the sensitivity of the MN assay to PAEs was weak at both low and high concentrations, and MN frequencies were generally low. This study demonstrates for the first time the possible contribution of PAEs in perfumes to DNA damage and suggests that their use as solvents or fixatives should be regulated. Other ingredients with mutagenic/genotoxic properties, however, may also have contributed to the DNA damage. Future studies should focus on applying a series of assays that use different cellular models with various endpoints to identify the spectrum of genotoxic mechanisms involved.
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Affiliation(s)
- Iman Al-Saleh
- Environmental Health Program, King Faisal Specialist Hospital & Research Centre, PO Box: 3354, Riyadh, 11211, Saudi Arabia.
| | - Tahreer Al-Rajudi
- Environmental Health Program, King Faisal Specialist Hospital & Research Centre, PO Box: 3354, Riyadh, 11211, Saudi Arabia
| | - Ghofran Al-Qudaihi
- Environmental Health Program, King Faisal Specialist Hospital & Research Centre, PO Box: 3354, Riyadh, 11211, Saudi Arabia
| | - Pulicat Manogaran
- Stem Cell and Tissue Re-Engineering Program, King Faisal Specialist Hospital & Research Centre, PO Box: 3354, Riyadh, 11211, Saudi Arabia
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Jeong H, Kim J, Kim Y. Identification of Linkages between EDCs in Personal Care Products and Breast Cancer through Data Integration Combined with Gene Network Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14101158. [PMID: 28973975 PMCID: PMC5664659 DOI: 10.3390/ijerph14101158] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 09/22/2017] [Accepted: 09/27/2017] [Indexed: 12/21/2022]
Abstract
Approximately 1000 chemicals have been reported to possibly have endocrine disrupting effects, some of which are used in consumer products, such as personal care products (PCPs) and cosmetics. We conducted data integration combined with gene network analysis to: (i) identify causal molecular mechanisms between endocrine disrupting chemicals (EDCs) used in PCPs and breast cancer; and (ii) screen candidate EDCs associated with breast cancer. Among EDCs used in PCPs, four EDCs having correlation with breast cancer were selected, and we curated 27 common interacting genes between those EDCs and breast cancer to perform the gene network analysis. Based on the gene network analysis, ESR1, TP53, NCOA1, AKT1, and BCL6 were found to be key genes to demonstrate the molecular mechanisms of EDCs in the development of breast cancer. Using GeneMANIA, we additionally predicted 20 genes which could interact with the 27 common genes. In total, 47 genes combining the common and predicted genes were functionally grouped with the gene ontology and KEGG pathway terms. With those genes, we finally screened candidate EDCs for their potential to increase breast cancer risk. This study highlights that our approach can provide insights to understand mechanisms of breast cancer and identify potential EDCs which are in association with breast cancer.
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Affiliation(s)
- Hyeri Jeong
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Campus E 7.1, Saarbruecken D-66123, Germany.
- Division of Energy and Environment Technology, KIST School, University of Science and Technology, Hwarang-ro 14-gil 5, Seoul 02792, Korea.
| | - Jongwoon Kim
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Campus E 7.1, Saarbruecken D-66123, Germany.
- Division of Energy and Environment Technology, KIST School, University of Science and Technology, Hwarang-ro 14-gil 5, Seoul 02792, Korea.
| | - Youngjun Kim
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Campus E 7.1, Saarbruecken D-66123, Germany.
- Division of Energy and Environment Technology, KIST School, University of Science and Technology, Hwarang-ro 14-gil 5, Seoul 02792, Korea.
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Ávila J, González-Fernández R, Rotoli D, Hernández J, Palumbo A. Oxidative Stress in Granulosa-Lutein Cells From In Vitro Fertilization Patients. Reprod Sci 2017; 23:1656-1661. [PMID: 27821562 DOI: 10.1177/1933719116674077] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Ovarian aging is associated with gradual follicular loss by atresia/apoptosis. Increased production of toxic metabolites such as reactive oxygen species (ROS) and reactive nitrogen species as well as external oxidant agents plays an important role in the process of ovarian senescence and in the pathogenesis of ovarian pathologies such as endometriosis and polycystic ovary syndrome (PCOS). This review provides a synthesis of available studies of oxidative stress (OS) in the ovary, focusing on the most recent evidence obtained in mural granulosa-lutein (GL) cells of in vitro fertilization patients. Synthesis of antioxidant enzymes such as peroxiredoxin 4, superoxide dismutase, and catalase and OS damage response proteins such as aldehyde dehydrogenase 3, member A2 decreases with aging in human GL cells, favoring an unbalance in ROS/antioxidants that mediates molecular damage and altered cellular function. The increase in OS in the granulosa cell correlates with diminished expression of follicle-stimulating hormone receptor (FSHR) and a dysregulation of the FSHR signaling pathway and may be implicated in disrupted steroidogenic function and poor response to FSH in women with aging. Women with endometriosis and PCOS have lower antioxidant production capacity that may contribute to abnormal follicular development and infertility. Further investigation of the signaling pathways involved in cellular response to OS could shed light into molecular characterization of these diseases and development of new treatment strategies to improve reproductive potential in these women.
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Affiliation(s)
- Julio Ávila
- Departamento de Bioquímica y Biología Molecular, Laboratorio de Biología del Desarrollo, Universidad de La Laguna, La Laguna, Spain.,Centro de Investigaciones Biomédicas de Canarias (CIBICAN), Universidad de La Laguna, La Laguna, Spain
| | - Rebeca González-Fernández
- Departamento de Bioquímica y Biología Molecular, Laboratorio de Biología del Desarrollo, Universidad de La Laguna, La Laguna, Spain
| | - Deborah Rotoli
- Departamento de Bioquímica y Biología Molecular, Laboratorio de Biología del Desarrollo, Universidad de La Laguna, La Laguna, Spain.,Institute of Endocrinology and Experimental Oncology (IEOS), CNR-National Research Council, Naples, Italy
| | - Jairo Hernández
- Centro de Asistencia a la Reproducción Humana de Canarias, La Laguna, Spain
| | - Angela Palumbo
- Centro de Asistencia a la Reproducción Humana de Canarias, La Laguna, Spain .,Department of Obstetrics and Gynecology, New York University School of Medicine, New York, NY, USA
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Al-Saleh I, Elkhatib R, Al-Rajoudi T, Al-Qudaihi G. Assessing the concentration of phthalate esters (PAEs) and bisphenol A (BPA) and the genotoxic potential of treated wastewater (final effluent) in Saudi Arabia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 578:440-451. [PMID: 27836348 DOI: 10.1016/j.scitotenv.2016.10.207] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/10/2016] [Accepted: 10/27/2016] [Indexed: 06/06/2023]
Abstract
Plasticizers such as phthalate esters (PAEs) and bisphenol A (BPA) are highly persistent organic pollutants that tend to bio-accumulate in humans through the soil-plant-animal food chain. Some studies have reported the potential carcinogenic and teratogenic effects in addition to their estrogenic activities. Water resources are scarce in Saudi Arabia, and several wastewater treatment plants (WTPs) have been constructed for agricultural and industrial use. This study was designed to: (1) measure the concentrations of BPA and six PAEs, dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP), butyl benzyl phthalate (BBP), bis (2-ethylhexyl) phthalate (DEHP) and dioctyl phthalate (DOP), in secondary- and tertiary-treated wastewater collected from five WTPs in three Saudi cities for four to five weeks and (2) test their potential genotoxicity. Three genotoxicological parameters were used: % tail DNA (%T), tail moment (TM) and percentage micronuclei (%MN). Both DBP and DEHP were detected in all treated wastewater samples. DMP, DEP, BBP, DOP, and BPA were found in 83.3, 84.2, 79, 73.7 and 97.4% of the samples, respectively. The levels of DMP (p<0.001), DOP (p<0.001) and BPA (p=0.001) were higher in tertiary- treated wastewater than secondary-treated wastewater, perhaps due to the influence of the molecular weight and polarity of the chemicals. Both weekly sampling frequency and WTP locations significantly affected the variability in our data. Treated wastewater from Wadi Al-Araj was able to induce DNA damage (%T and TM) in human lymphoblastoid TK6 cells that was statistically higher than wastewater from all other WTPs and in untreated TK6 cells (negative control). %MN in samples from both Wadi Al-Araj and Manfouah did not differ statistically but was significantly higher than in the untreated TK6 cells. This study also showed that the samples of tertiary-treated wastewater had a higher genotoxicological potential to induce DNA damage than the samples of secondary-treated wastewater. BPA and some PAEs in the treated wastewater might have the potential to induce genetic damage, despite their low levels. Genotoxicity, however, may also have been due to the presence of other contaminants. Our preliminary findings should be of concern to Saudi agriculture because long-term irrigation with treated wastewater could lead to the accumulation of PAEs and BPA in the soil and ultimately reach the human and animal food chain. WTPs need to remove pollutants more efficiently. Until then, a cautious use of treated wastewater for irrigation is recommended to avoid serious health impacts on local populations.
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Affiliation(s)
- Iman Al-Saleh
- Environmental Health Program, King Faisal Specialist Hospital & Research Centre, PO Box 3354, Riyadh 11211, Saudi Arabia.
| | - Rola Elkhatib
- Environmental Health Program, King Faisal Specialist Hospital & Research Centre, PO Box 3354, Riyadh 11211, Saudi Arabia
| | - Tahreer Al-Rajoudi
- Environmental Health Program, King Faisal Specialist Hospital & Research Centre, PO Box 3354, Riyadh 11211, Saudi Arabia
| | - Ghofran Al-Qudaihi
- Environmental Health Program, King Faisal Specialist Hospital & Research Centre, PO Box 3354, Riyadh 11211, Saudi Arabia
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38
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Phtalates: new cardiovascular health disruptors? Arch Toxicol 2016; 91:1513-1517. [DOI: 10.1007/s00204-016-1780-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 06/21/2016] [Indexed: 12/20/2022]
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Steinmetz Z, Wollmann C, Schaefer M, Buchmann C, David J, Tröger J, Muñoz K, Frör O, Schaumann GE. Plastic mulching in agriculture. Trading short-term agronomic benefits for long-term soil degradation? THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 550:690-705. [PMID: 26849333 DOI: 10.1016/j.scitotenv.2016.01.153] [Citation(s) in RCA: 448] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 01/23/2016] [Accepted: 01/23/2016] [Indexed: 05/18/2023]
Abstract
Plastic mulching has become a globally applied agricultural practice for its instant economic benefits such as higher yields, earlier harvests, improved fruit quality and increased water-use efficiency. However, knowledge of the sustainability of plastic mulching remains vague in terms of both an environmental and agronomic perspective. This review critically discusses the current understanding of the environmental impact of plastic mulch use by linking knowledge of agricultural benefits and research on the life cycle of plastic mulches with direct and indirect implications for long-term soil quality and ecosystem services. Adverse effects may arise from plastic additives, enhanced pesticide runoff and plastic residues likely to fragment into microplastics but remaining chemically intact and accumulating in soil where they can successively sorb agrochemicals. The quantification of microplastics in soil remains challenging due to the lack of appropriate analytical techniques. The cost and effort of recovering and recycling used mulching films may offset the aforementioned benefits in the long term. However, comparative and long-term agronomic assessments have not yet been conducted. Furthermore, plastic mulches have the potential to alter soil quality by shifting the edaphic biocoenosis (e.g. towards mycotoxigenic fungi), accelerate C/N metabolism eventually depleting soil organic matter stocks, increase soil water repellency and favour the release of greenhouse gases. A substantial process understanding of the interactions between the soil microclimate, water supply and biological activity under plastic mulches is still lacking but required to estimate potential risks for long-term soil quality. Currently, farmers mostly base their decision to apply plastic mulches rather on expected short-term benefits than on the consideration of long-term consequences. Future interdisciplinary research should therefore gain a deeper understanding of the incentives for farmers and public perception from both a psychological and economic perspective in order to develop new support strategies for the transition into a more environment-friendly food production.
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Affiliation(s)
- Zacharias Steinmetz
- Institute for Environmental Sciences, Group of Environmental and Soil Chemistry, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany
| | - Claudia Wollmann
- Institute for Environmental Sciences, Group of Environmental and Soil Chemistry, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany
| | - Miriam Schaefer
- Institute for Environmental Sciences, Group of Environmental and Soil Chemistry, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany
| | - Christian Buchmann
- Institute for Environmental Sciences, Group of Environmental and Soil Chemistry, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany
| | - Jan David
- Institute for Environmental Sciences, Group of Environmental and Soil Chemistry, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany
| | - Josephine Tröger
- Department of Psychology, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany; Interdisciplinary Research Group on Environmental Issues, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany
| | - Katherine Muñoz
- Institute for Environmental Sciences, Group of Environmental and Soil Chemistry, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany; Interdisciplinary Research Group on Environmental Issues, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany
| | - Oliver Frör
- Institute for Environmental Sciences, Group of Environmental Economics, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany
| | - Gabriele Ellen Schaumann
- Institute for Environmental Sciences, Group of Environmental and Soil Chemistry, University of Koblenz-Landau, Fortstraße 7, 76829 Landau, Germany.
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Chen XH, Ma L, Hu YX, Wang DX, Fang L, Li XL, Zhao JC, Yu HR, Ying HZ, Yu CH. Transcriptome profiling and pathway analysis of hepatotoxicity induced by tris (2-ethylhexyl) trimellitate (TOTM) in mice. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 41:62-71. [PMID: 26650799 DOI: 10.1016/j.etap.2015.11.007] [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: 06/30/2015] [Revised: 11/02/2015] [Accepted: 11/08/2015] [Indexed: 06/05/2023]
Abstract
Tris (2-ethylhexyl) trimellitate (TOTM) is commonly used as an alternative plasticizer for medical devices. But very little information was available on its biological effects. In this study, we investigated toxicity effects of TOTM on hepatic differential gene expression analyzed by using high-throughput sequencing analysis for over-represented functions and phenotypically anchored to complementary histopathologic, and biochemical data in the liver of mice. Among 1668 candidate genes, 694 genes were up-regulated and 974 genes were down-regulated after TOTM exposure. Using Gene Ontology analysis, TOTM affected three processes: the cell cycle, metabolic process and oxidative activity. Furthermore, 11 key genes involved in the above processes were validated by real time PCR. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed that these genes were involved in the cell cycle pathway, lipid metabolism and oxidative process. It revealed the transcriptome gene expression response to TOTM exposure in mouse, and these data could contribute to provide a clearer understanding of the molecular mechanisms of TOTM-induced hepatotoxicity in human.
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Affiliation(s)
- Xian-Hua Chen
- Key Laboratory for Medical Device Safety Evaluation and Research, Zhejiang Institute of Medical Device Supervision and Testing, Hangzhou 310018, China
| | - Li Ma
- Key Laboratory for Medical Device Safety Evaluation and Research, Zhejiang Institute of Medical Device Supervision and Testing, Hangzhou 310018, China
| | - Yi-Xiang Hu
- Key Laboratory of Experimental Animal and Safety Evaluation, Zhejiang Academy of Medical Sciences, Hangzhou 310013, China
| | - Dan-Xian Wang
- Key Laboratory of Experimental Animal and Safety Evaluation, Zhejiang Academy of Medical Sciences, Hangzhou 310013, China
| | - Li Fang
- Key Laboratory for Medical Device Safety Evaluation and Research, Zhejiang Institute of Medical Device Supervision and Testing, Hangzhou 310018, China
| | - Xue-Lai Li
- Key Laboratory for Medical Device Safety Evaluation and Research, Zhejiang Institute of Medical Device Supervision and Testing, Hangzhou 310018, China
| | - Jin-Chuan Zhao
- Key Laboratory for Medical Device Safety Evaluation and Research, Zhejiang Institute of Medical Device Supervision and Testing, Hangzhou 310018, China
| | - Hai-Rong Yu
- Key Laboratory for Medical Device Safety Evaluation and Research, Zhejiang Institute of Medical Device Supervision and Testing, Hangzhou 310018, China
| | - Hua-Zhong Ying
- Key Laboratory of Experimental Animal and Safety Evaluation, Zhejiang Academy of Medical Sciences, Hangzhou 310013, China
| | - Chen-Huan Yu
- Key Laboratory of Experimental Animal and Safety Evaluation, Zhejiang Academy of Medical Sciences, Hangzhou 310013, China.
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