51
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Scholz S, Nichols JW, Escher BI, Ankley GT, Altenburger R, Blackwell B, Brack W, Burkhard L, Collette TW, Doering JA, Ekman D, Fay K, Fischer F, Hackermüller J, Hoffman JC, Lai C, Leuthold D, Martinovic-Weigelt D, Reemtsma T, Pollesch N, Schroeder A, Schüürmann G, von Bergen M. The Eco-Exposome Concept: Supporting an Integrated Assessment of Mixtures of Environmental Chemicals. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:30-45. [PMID: 34714945 PMCID: PMC9104394 DOI: 10.1002/etc.5242] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/20/2021] [Accepted: 10/26/2021] [Indexed: 05/04/2023]
Abstract
Organisms are exposed to ever-changing complex mixtures of chemicals over the course of their lifetime. The need to more comprehensively describe this exposure and relate it to adverse health effects has led to formulation of the exposome concept in human toxicology. Whether this concept has utility in the context of environmental hazard and risk assessment has not been discussed in detail. In this Critical Perspective, we propose-by analogy to the human exposome-to define the eco-exposome as the totality of the internal exposure (anthropogenic and natural chemicals, their biotransformation products or adducts, and endogenous signaling molecules that may be sensitive to an anthropogenic chemical exposure) over the lifetime of an ecologically relevant organism. We describe how targeted and nontargeted chemical analyses and bioassays can be employed to characterize this exposure and discuss how the adverse outcome pathway concept could be used to link this exposure to adverse effects. Available methods, their limitations, and/or requirement for improvements for practical application of the eco-exposome concept are discussed. Even though analysis of the eco-exposome can be resource-intensive and challenging, new approaches and technologies make this assessment increasingly feasible. Furthermore, an improved understanding of mechanistic relationships between external chemical exposure(s), internal chemical exposure(s), and biological effects could result in the development of proxies, that is, relatively simple chemical and biological measurements that could be used to complement internal exposure assessment or infer the internal exposure when it is difficult to measure. Environ Toxicol Chem 2022;41:30-45. © 2021 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Stefan Scholz
- Helmholtz Centre for Environmental Research—UFZ, Leipzig, Germany
- Address correspondence to
| | - John W. Nichols
- Office of Research and Development, Great Lakes Ecology and Toxicology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Beate I. Escher
- Helmholtz Centre for Environmental Research—UFZ, Leipzig, Germany
- Environmental Toxicology, Center for Applied Geoscience, Eberhard Karls University Tubingen, Tubingen, Germany
| | - Gerald T. Ankley
- Office of Research and Development, Great Lakes Ecology and Toxicology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Rolf Altenburger
- Helmholtz Centre for Environmental Research—UFZ, Leipzig, Germany
- Institute for Environmental Research, Biologie V, RWTH Aachen University, Aachen, Germany
| | - Brett Blackwell
- Office of Research and Development, Great Lakes Ecology and Toxicology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Werner Brack
- Helmholtz Centre for Environmental Research—UFZ, Leipzig, Germany
- Department of Evolutionary Ecology and Environmental Toxicology, Faculty of Biological Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Lawrence Burkhard
- Office of Research and Development, Great Lakes Ecology and Toxicology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Timothy W. Collette
- Office of Research and Development, Ecosystem Processes Division, US Environmental Protection Agency, Athens, Georgia
| | - Jon A. Doering
- National Research Council, US Environmental Protection Agency, Duluth, Minnesota
| | - Drew Ekman
- Office of Research and Development, Ecosystem Processes Division, US Environmental Protection Agency, Athens, Georgia
| | - Kellie Fay
- Office of Pollution Prevention and Toxics, Risk Assessment Division, US Environmental Protection Agency, Washington, DC
| | - Fabian Fischer
- Helmholtz Centre for Environmental Research—UFZ, Leipzig, Germany
| | | | - Joel C. Hoffman
- Office of Research and Development, Great Lakes Ecology and Toxicology Division, US Environmental Protection Agency, Duluth, Minnesota
| | - Chih Lai
- College of Arts and Sciences, University of Saint Thomas, St. Paul, Minnesota, USA
| | - David Leuthold
- Helmholtz Centre for Environmental Research—UFZ, Leipzig, Germany
| | | | | | - Nathan Pollesch
- Office of Research and Development, Great Lakes Ecology and Toxicology Division, US Environmental Protection Agency, Duluth, Minnesota
| | | | - Gerrit Schüürmann
- Helmholtz Centre for Environmental Research—UFZ, Leipzig, Germany
- Institute of Organic Chemistry, Technische Universitat Bergakademie Freiberg, Freiberg, Germany
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Wang J, Su G, Yan X, Zhang W, Jia J, Yan B. Predicting cytotoxicity of binary pollutants towards a human cell panel in environmental water by experimentation and deep learning methods. CHEMOSPHERE 2022; 287:132324. [PMID: 34563777 DOI: 10.1016/j.chemosphere.2021.132324] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/12/2021] [Accepted: 09/20/2021] [Indexed: 06/13/2023]
Abstract
Biological assays are useful in water quality evaluation by providing the overall toxicity of chemical mixtures in environmental waters. However, it is impossible to elucidate the source of toxicity and some lethal combination of pollutants simply using biological assays. As facile and cost-effective methods, computation model-based toxicity assessments are complementary technologies. Herein, we predicted the human health risk of binary pollutant mixtures (i.e., binary combinations of As(III), Cd(II), Cr(VI), Pb(II) and F(I)) in water using in vitro biological assays and deep learning methods. By employing a human cell panel containing human stomach, colon, liver, and kidney cell lines, we assessed the human health risk mimicking cellular responses after oral exposures of environmental water containing pollutants. Based on the experimental cytotoxicity data in pure water, multi-task deep learning was applied to predict cellular response of binary pollutant mixtures in environmental water. Using additive descriptors and single pollutant toxicity data in pure water, the established deep learning model could predict the toxicity of most binary mixtures in environmental water, with coefficient of determination (R2) > 0.65 and root mean squared error (RMSE) < 0.22. Further combining the experimental data on synergistic and antagonistic effects of pollutant mixtures, deep learning helped improve the predictive ability of the model (R2 > 0.74 and RMSE <0.17). Moreover, predictive models allowed us identify a number of toxicity source-related physiochemical properties. This study illustrates the combination of experimental findings and deep learning methods in the water quality evaluation.
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Affiliation(s)
- Jiahui Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Gaoxing Su
- School of Pharmacy, Nantong University, Nantong, 226001, China.
| | - Xiliang Yan
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China.
| | - Wei Zhang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China
| | - Jianbo Jia
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China
| | - Bing Yan
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China.
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Landi C, Liberatori G, Cotugno P, Sturba L, Vannuccini ML, Massari F, Miniero DV, Tursi A, Shaba E, Behnisch PA, Carleo A, Di Giuseppe F, Angelucci S, Bini L, Corsi I. First Attempt to Couple Proteomics with the AhR Reporter Gene Bioassay in Soil Pollution Monitoring and Assessment. TOXICS 2021; 10:toxics10010009. [PMID: 35051051 PMCID: PMC8779689 DOI: 10.3390/toxics10010009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/22/2021] [Accepted: 12/24/2021] [Indexed: 11/16/2022]
Abstract
A topsoil sample obtained from a highly industrialized area (Taranto, Italy) was tested on the DR-CALUX® cell line and the exposed cells processed with proteomic and bioinformatics analyses. The presence of polyhalogenated compounds in the topsoil extracts was confirmed by GC-MS/MS analysis. Proteomic analysis of the cells exposed to the topsoil extracts identified 43 differential proteins. Enrichment analysis highlighted biological processes, such as the cellular response to a chemical stimulus, stress, and inorganic substances; regulation of translation; regulation of apoptotic process; and the response to organonitrogen compounds in light of particular drugs and compounds, extrapolated by bioinformatics all linked to the identified protein modifications. Our results confirm and reflect the complex epidemiological situation occurring among Taranto inhabitants and underline the need to further investigate the presence and sources of inferred chemicals in soils. The combination of bioassays and proteomics reveals a more complex scenario of chemicals able to affect cellular pathways and leading to toxicities rather than those identified by only bioassays and related chemical analysis. This combined approach turns out to be a promising tool for soil risk assessment and deserves further investigation and developments for soil monitoring and risk assessment.
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Affiliation(s)
- Claudia Landi
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (C.L.); (E.S.)
| | - Giulia Liberatori
- Department of Physical, Earth and Environmental Sciences, University of Siena, 53100 Siena, Italy; (G.L.); (L.S.); (M.L.V.)
| | - Pietro Cotugno
- Department of Biology, University of Bari Aldo Moro, 70121 Bari, Italy; (P.C.); (F.M.); (D.V.M.); (A.T.)
| | - Lucrezia Sturba
- Department of Physical, Earth and Environmental Sciences, University of Siena, 53100 Siena, Italy; (G.L.); (L.S.); (M.L.V.)
| | - Maria Luisa Vannuccini
- Department of Physical, Earth and Environmental Sciences, University of Siena, 53100 Siena, Italy; (G.L.); (L.S.); (M.L.V.)
| | - Federica Massari
- Department of Biology, University of Bari Aldo Moro, 70121 Bari, Italy; (P.C.); (F.M.); (D.V.M.); (A.T.)
| | - Daniela Valeria Miniero
- Department of Biology, University of Bari Aldo Moro, 70121 Bari, Italy; (P.C.); (F.M.); (D.V.M.); (A.T.)
| | - Angelo Tursi
- Department of Biology, University of Bari Aldo Moro, 70121 Bari, Italy; (P.C.); (F.M.); (D.V.M.); (A.T.)
| | - Enxhi Shaba
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (C.L.); (E.S.)
| | - Peter A. Behnisch
- BioDetection System BV (BDS) Amsterdam, 1098 XH Amsterdam, The Netherlands;
| | - Alfonso Carleo
- Department of Pulmonology, Hannover Medical School, 30625 Hannover, Germany;
| | - Fabrizio Di Giuseppe
- Department of Medical, Oral & Biotechnological Sciences, Dentistry and Biotechnology and Proteomics Unit, Centre of Advanced Studies and Technology, “G. D’Annunzio”, University of Chieti-Pescara, 66100 Chieti, Italy; (F.D.G.); (S.A.)
| | - Stefania Angelucci
- Department of Medical, Oral & Biotechnological Sciences, Dentistry and Biotechnology and Proteomics Unit, Centre of Advanced Studies and Technology, “G. D’Annunzio”, University of Chieti-Pescara, 66100 Chieti, Italy; (F.D.G.); (S.A.)
| | - Luca Bini
- Department of Life Sciences, University of Siena, 53100 Siena, Italy; (C.L.); (E.S.)
- Correspondence: (L.B.); (I.C.); Tel.: +39-0577-234938 (L.B.); +39-0577-232169 (I.C.)
| | - Ilaria Corsi
- Department of Physical, Earth and Environmental Sciences, University of Siena, 53100 Siena, Italy; (G.L.); (L.S.); (M.L.V.)
- Correspondence: (L.B.); (I.C.); Tel.: +39-0577-234938 (L.B.); +39-0577-232169 (I.C.)
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54
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Chen Z, Jang S, Kaihatu JM, Zhou YH, Wright FA, Chiu WA, Rusyn I. Potential Human Health Hazard of Post-Hurricane Harvey Sediments in Galveston Bay and Houston Ship Channel: A Case Study of Using In Vitro Bioactivity Data to Inform Risk Management Decisions. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:13378. [PMID: 34948986 PMCID: PMC8702027 DOI: 10.3390/ijerph182413378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/08/2021] [Accepted: 12/16/2021] [Indexed: 01/14/2023]
Abstract
Natural and anthropogenic disasters may be associated with redistribution of chemical contaminants in the environment; however, current methods for assessing hazards and risks of complex mixtures are not suitable for disaster response. This study investigated the suitability of in vitro toxicity testing methods as a rapid means of identifying areas of potential human health concern. We used sediment samples (n = 46) from Galveston Bay and the Houston Ship Channel (GB/HSC) areas after hurricane Harvey, a disaster event that led to broad redistribution of chemically-contaminated sediments, including deposition of the sediment on shore due to flooding. Samples were extracted with cyclohexane and dimethyl sulfoxide and screened in a compendium of human primary or induced pluripotent stem cell (iPSC)-derived cell lines from different tissues (hepatocytes, neuronal, cardiomyocytes, and endothelial) to test for concentration-dependent effects on various functional and cytotoxicity phenotypes (n = 34). Bioactivity data were used to map areas of potential concern and the results compared to the data on concentrations of polycyclic aromatic hydrocarbons (PAHs) in the same samples. We found that setting remediation goals based on reducing bioactivity is protective of both "known" risks associated with PAHs and "unknown" risks associated with bioactivity, but the converse was not true for remediation based on PAH risks alone. Overall, we found that in vitro bioactivity can be used as a comprehensive indicator of potential hazards and is an example of a new approach method (NAM) to inform risk management decisions on site cleanup.
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Affiliation(s)
- Zunwei Chen
- Interdisciplinary Faculty of Toxicology, Texas A&M University, College Station, TX 77843, USA; (Z.C.); (S.J.); (W.A.C.)
| | - Suji Jang
- Interdisciplinary Faculty of Toxicology, Texas A&M University, College Station, TX 77843, USA; (Z.C.); (S.J.); (W.A.C.)
| | - James M. Kaihatu
- Civil & Environmental Engineering and Ocean Engineering, Texas A&M University, College Station, TX 77843, USA;
| | - Yi-Hui Zhou
- Biological Sciences and Statistics, North Carolina State University, Raleigh, NC 27695, USA; (Y.-H.Z.); (F.A.W.)
| | - Fred A. Wright
- Biological Sciences and Statistics, North Carolina State University, Raleigh, NC 27695, USA; (Y.-H.Z.); (F.A.W.)
| | - Weihsueh A. Chiu
- Interdisciplinary Faculty of Toxicology, Texas A&M University, College Station, TX 77843, USA; (Z.C.); (S.J.); (W.A.C.)
| | - Ivan Rusyn
- Interdisciplinary Faculty of Toxicology, Texas A&M University, College Station, TX 77843, USA; (Z.C.); (S.J.); (W.A.C.)
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55
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Carere M, Antoccia A, Buschini A, Frenzilli G, Marcon F, Andreoli C, Gorbi G, Suppa A, Montalbano S, Prota V, De Battistis F, Guidi P, Bernardeschi M, Palumbo M, Scarcelli V, Colasanti M, D'Ezio V, Persichini T, Scalici M, Sgura A, Spani F, Udroiu I, Valenzuela M, Lacchetti I, di Domenico K, Cristiano W, Marra V, Ingelido AM, Iacovella N, De Felip E, Massei R, Mancini L. An integrated approach for chemical water quality assessment of an urban river stretch through Effect-Based Methods and emerging pollutants analysis with a focus on genotoxicity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 300:113549. [PMID: 34543968 DOI: 10.1016/j.jenvman.2021.113549] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 07/04/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
The impact of emerging chemical pollutants, on both status and functionality of aquatic ecosystems is worldwide recognized as a relevant issue of concern that should be assessed and managed by researchers, policymakers, and all relevant stakeholders. In Europe, the Reach Regulation has registered more than 100.000 chemical substances daily released in the environment. Furthermore, the effects related to the mixture of substances present in aquatic ecosystems may not be predictable on the basis of chemical analyses alone. This evidence, coupled with the dramatic effects of climate changes on water resources through water scarcity and flooding, makes urgent the application of innovative, fast and reliable monitoring methods. In this context, Effect-Based Methods (EBMs) have been applied in the urban stretch of the Tiber River (Central Italy) with the aim of understanding if detrimental pressures affect aquatic environmental health. In particular, different eco-genotoxicological assays have been used in order to detect genotoxic activity of chemicals present in the river, concurrently characterized by chemical analysis. Teratogenicity and embryo-toxicity have been studied in order to cover additional endpoints. The EBMs have highlighted the presence of diffuse chemical pollution and ecotoxicological effects in the three sampling stations, genotoxicological effects have been also detected through the use of different tests and organisms. The chemical analyses confirmed that in the aquatic ecosystems there is a diffuse presence, even at low concentrations, of emerging contaminants such as pharmaceuticals, not routinely monitored pesticides, personal care products, PFAS. The results of this study can help to identify an appropriate battery of EBMs for future studies and the application of more appropriate measures in order to monitor, mitigate or eliminate chemical contamination and remediate its adverse/detrimental effects on the ecosystem health.
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Affiliation(s)
- Mario Carere
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy.
| | - Antonio Antoccia
- Department of Science, University "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Roma, Italy
| | - Annamaria Buschini
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze, 11/a, 43124, Parma, Italy
| | - Giada Frenzilli
- University of Pisa, Department of Clinical and Experimental Medicine, Unit of Applied Biology and Genetics, Via A. Volta 4, Pisa, Italy
| | - Francesca Marcon
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Cristina Andreoli
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Gessica Gorbi
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze, 11/a, 43124, Parma, Italy
| | - Antonio Suppa
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze, 11/a, 43124, Parma, Italy
| | - Serena Montalbano
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze, 11/a, 43124, Parma, Italy
| | - Valentina Prota
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Francesca De Battistis
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Patrizia Guidi
- University of Pisa, Department of Clinical and Experimental Medicine, Unit of Applied Biology and Genetics, Via A. Volta 4, Pisa, Italy
| | - Margherita Bernardeschi
- University of Pisa, Department of Clinical and Experimental Medicine, Unit of Applied Biology and Genetics, Via A. Volta 4, Pisa, Italy
| | - Mara Palumbo
- University of Pisa, Department of Clinical and Experimental Medicine, Unit of Applied Biology and Genetics, Via A. Volta 4, Pisa, Italy
| | - Vittoria Scarcelli
- University of Pisa, Department of Clinical and Experimental Medicine, Unit of Applied Biology and Genetics, Via A. Volta 4, Pisa, Italy
| | - Marco Colasanti
- Department of Science, University "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Roma, Italy
| | - Veronica D'Ezio
- Department of Science, University "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Roma, Italy
| | - Tiziana Persichini
- Department of Science, University "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Roma, Italy
| | - Massimiliano Scalici
- Department of Science, University "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Roma, Italy
| | - Antonella Sgura
- Department of Science, University "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Roma, Italy
| | - Federica Spani
- Department of Science, University "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Roma, Italy
| | - Ion Udroiu
- Department of Science, University "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Roma, Italy
| | - Martina Valenzuela
- Department of Science, University "Roma Tre", Viale Guglielmo Marconi 446, I-00146, Roma, Italy
| | - Ines Lacchetti
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Kevin di Domenico
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Walter Cristiano
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Valentina Marra
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Anna Maria Ingelido
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Nicola Iacovella
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Elena De Felip
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
| | - Riccardo Massei
- UFZ - Helmholtz Centre for Environmental Research, Department Bioanalytical Ecotoxicology, Permoserstr. 15, 04318, Leipzig, Germany
| | - Laura Mancini
- Italian Institute of Health, Department: Environment and Health, Viale Regina Elena 299, Rome, Italy
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56
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Baumer A, Jäsch S, Ulrich N, Bechmann I, Landmann J, Stöver A, Escher BI. Chemical mixtures in human post-mortem tissues assessed by a combination of chemical analysis and in vitro bioassays after extraction with silicone. ENVIRONMENT INTERNATIONAL 2021; 157:106867. [PMID: 34537519 DOI: 10.1016/j.envint.2021.106867] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/11/2021] [Accepted: 09/05/2021] [Indexed: 05/12/2023]
Abstract
Passive equilibrium sampling of chemical mixtures from different human post-mortem tissues (liver, brain (cerebrum and cerebellum), adipose tissue) and blood was combined with instrumental analysis using direct sample introduction (DSI) GC-MS/MS and bioanalytical profiling using in vitro bioassays targeting the activation of the aryl hydrocarbon receptor (AhR-CALUX), the adaptive stress response (AREc32) and cytotoxicity. The tissues stemmed from pathology samples collected in two German cities and covered males and females aged 21 to 100 with a mean age of 67 years. Neutral organic chemicals were extracted using polydimethylsiloxane (PDMS) at mass ratios of tissue to PDMS of approximately 6 for blood, 3 for adipose tissue and 10 for liver and brain. Amounts of chemicals in PDMS were converted to lipid-associated concentrations using previously measured partition constants that were chemical-independent despite covering eight orders of magnitude in hydrophobicity. Up to 35 of 99 targeted chemicals were detected in 6 tissues of 16 individuals (88 samples in total), among them legacy persistent organic pollutants (POP) such as DDT and derivatives and polychlorinated biphenyls (PCB) but also modern pesticides and chemicals present in consumer products. POPs were highest in adipose tissue and lipid-associated concentrations increased with age, while concentrations of fragrance materials such as galaxolide were independent of age. In tissues from the same individual, chemical concentrations mostly increased from similar levels in brain and blood to higher levels in liver and highest in adipose tissue. However, easily degradable chemicals such as phenanthrene were mainly detected in blood and brain, and very hydrophilic chemicals were least abundant in adipose tissue. The passive sampling method allows a direct comparison of chemical burden between different tissues and may have forensic applications, for example to study internal distributions or to use one tissue type as a proxy for others. The sum of concentrations of the detected chemicals was positively correlated with the bioassay responses but mixture modeling showed that the detected chemicals explained less than 2% of the activation of the AhR and less than 0.5% of cytotoxicity. This means that more than 10,000 chemicals would need to be included in an analytical method to capture all the effects with many chemicals potentially being below detection limits but still contributing to mixture effects. Therefore, we propose a smart combination of chemical analysis and bioassays to quantify priority chemicals but use bioassay responses as effect-scaled concentrations to capture the entire exposome in future epidemiological studies.
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Affiliation(s)
- Andreas Baumer
- Department Cell Toxicology, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Sandra Jäsch
- Department Analytical Environmental Chemistry, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Nadin Ulrich
- Department Analytical Environmental Chemistry, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Ingo Bechmann
- Institute of Anatomy, University of Leipzig, Liebigstraße 13, 04103 Leipzig, Germany
| | - Julia Landmann
- Institute of Anatomy, University of Leipzig, Liebigstraße 13, 04103 Leipzig, Germany
| | - Andreas Stöver
- Institute of Legal Medicine, Ludwig-Maximilians University Munich, Nußbaumstraße 26, 80336 Munich, Germany
| | - Beate I Escher
- Department Cell Toxicology, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318 Leipzig, Germany; Eberhard Karls University Tübingen, Environmental Toxicology, Centre for Applied Geosciences, Schnarrenbergstr. 94-96, 72076 Tübingen, Germany.
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57
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Ha K, Xia P, Crump D, Saini A, Harner T, O’Brien J. Cytotoxic and Transcriptomic Effects in Avian Hepatocytes Exposed to a Complex Mixture from Air Samples, and Their Relation to the Organic Flame Retardant Signature. TOXICS 2021; 9:toxics9120324. [PMID: 34941758 PMCID: PMC8704741 DOI: 10.3390/toxics9120324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/09/2021] [Accepted: 11/20/2021] [Indexed: 11/30/2022]
Abstract
Assessing complex environmental mixtures and their effects is challenging. In this study, we evaluate the utility of an avian in vitro screening approach to determine the effects of passive air sampler extracts collected from different global megacities on cytotoxicity and gene expression. Concentrations of a suite of organic flame retardants (OFRs) were quantified in extracts from a total of 19 megacities/major cities in an earlier study, and levels were highly variable across sites. Chicken embryonic hepatocytes were exposed to serial dilutions of extracts from the 19 cities for 24 h. Cell viability results indicate a high level of variability in cytotoxicity, with extracts from Toronto, Canada, having the lowest LC50 value. Partial least squares (PLS) regression analysis was used to estimate LC50 values from OFR concentrations. PLS modeling of OFRs was moderately predictive of LC50 (p-value = 0.0003, r2 = 0.66, slope = 0.76, when comparing predicted LC50 to actual values), although only after one outlier city was removed from the analysis. A chicken ToxChip PCR array, comprising 43 target genes, was used to determine effects on gene expression, and similar to results for cell viability, gene expression profiles were highly variable among the megacities. PLS modeling was used to determine if gene expression was related to the OFR profiles of the extracts. Weak relationships to the ToxChip expression profiles could be detected for only three of the 35 OFRs (indicated by regression slopes between 0.6 and 0.5 when comparing predicted to actual OFR concentrations). While this in vitro approach shows promise in terms of evaluating effects of complex mixtures, we also identified several limitations that, if addressed in future studies, might improve its performance.
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Affiliation(s)
- Kelsey Ha
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada;
- National Wildlife Research Centre, Environment and Climate Change Canada, Ottawa, ON K1A 0H3, Canada; (P.X.); (J.O.)
| | - Pu Xia
- National Wildlife Research Centre, Environment and Climate Change Canada, Ottawa, ON K1A 0H3, Canada; (P.X.); (J.O.)
| | - Doug Crump
- National Wildlife Research Centre, Environment and Climate Change Canada, Ottawa, ON K1A 0H3, Canada; (P.X.); (J.O.)
- Correspondence: ; Tel.: +1-(613)-998-7383
| | - Amandeep Saini
- Air Quality Processes Research Section, Environment and Climate Change Canada, Toronto, ON M3H 5T4, Canada; (A.S.); (T.H.)
| | - Tom Harner
- Air Quality Processes Research Section, Environment and Climate Change Canada, Toronto, ON M3H 5T4, Canada; (A.S.); (T.H.)
| | - Jason O’Brien
- National Wildlife Research Centre, Environment and Climate Change Canada, Ottawa, ON K1A 0H3, Canada; (P.X.); (J.O.)
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Schuijt LM, Peng FJ, van den Berg SJP, Dingemans MML, Van den Brink PJ. (Eco)toxicological tests for assessing impacts of chemical stress to aquatic ecosystems: Facts, challenges, and future. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 795:148776. [PMID: 34328937 DOI: 10.1016/j.scitotenv.2021.148776] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 06/23/2021] [Accepted: 06/27/2021] [Indexed: 06/13/2023]
Abstract
Monitoring of chemicals in the aquatic environment by chemical analysis alone cannot completely assess and predict the effects of chemicals on aquatic species and ecosystems. This is primarily because of the increasing number of (unknown) chemical stressors and mixture effects present in the environment. In addition, the ability of ecological indices to identify underlying stressors causing negative ecological effects is limited. Therefore, additional complementary methods are needed that can address the biological effects in a direct manner and provide a link to chemical exposure, i.e. (eco)toxicological tests. (Eco)toxicological tests are defined as test systems that expose biological components (cells, individuals, populations, communities) to (environmental mixtures of) chemicals to register biological effects. These tests measure responses at the sub-organismal (biomarkers and in vitro bioassays), whole-organismal, population, or community level. We performed a literature search to obtain a state-of-the-art overview of ecotoxicological tests available for assessing impacts of chemicals to aquatic biota and to reveal datagaps. In total, we included 509 biomarkers, 207 in vitro bioassays, 422 tests measuring biological effects at the whole-organismal level, and 78 tests at the population- community- and ecosystem-level. Tests at the whole-organismal level and biomarkers were most abundant for invertebrates and fish, whilst in vitro bioassays are mostly based on mammalian cell lines. Tests at the community- and ecosystem-level were almost missing for organisms other than microorganisms and algae. In addition, we provide an overview of the various extrapolation challenges faced in using data from these tests and suggest some forward looking perspectives. Although extrapolating the measured responses to relevant protection goals remains challenging, the combination of ecotoxicological experiments and models is key for a more comprehensive assessment of the effects of chemical stressors to aquatic ecosystems.
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Affiliation(s)
- Lara M Schuijt
- Aquatic Ecology and Water Quality Management group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, the Netherlands.
| | - Feng-Jiao Peng
- Wageningen Environmental Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands; Human Biomonitoring Research Unit, Department of Population Health, Luxembourg Institute of Health, 1 A-B rue Thomas Edison, 1445 Strassen, Luxembourg
| | - Sanne J P van den Berg
- Aquatic Ecology and Water Quality Management group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, the Netherlands; Wageningen Environmental Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Milou M L Dingemans
- KWR Water Research Institute, Nieuwegein, the Netherlands; Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Paul J Van den Brink
- Aquatic Ecology and Water Quality Management group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, the Netherlands; Wageningen Environmental Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
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59
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Beil S, Markiewicz M, Pereira CS, Stepnowski P, Thöming J, Stolte S. Toward the Proactive Design of Sustainable Chemicals: Ionic Liquids as a Prime Example. Chem Rev 2021; 121:13132-13173. [PMID: 34523909 DOI: 10.1021/acs.chemrev.0c01265] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The tailorable and often unique properties of ionic liquids (ILs) drive their implementation into a broad variety of seminal technologies. The modular design of ILs allows in this context a proactive selection of structures that favor environmental sustainability─ideally without compromising their technological performance. To achieve this objective, the whole life cycle must be taken into account and various aspects considered simultaneously. In this review, we discuss how the structural design of ILs affects their environmental impacts throughout all stages of their life cycles and scrutinize the available data in order to point out knowledge gaps that need further research activities. The design of more sustainable ILs starts with the selection of the most beneficial precursors and synthesis routes, takes their technical properties and application specific performance into due account, and considers its environmental fate particularly in terms of their (eco)toxicity, biotic and abiotic degradability, mobility, and bioaccumulation potential. Special emphasis is placed on reported structure-activity relationships and suggested mechanisms on a molecular level that might rationalize the empirically found design criteria.
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Affiliation(s)
- Stephan Beil
- Institute of Water Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Marta Markiewicz
- Institute of Water Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Cristina Silva Pereira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), Av. da República, 2780-157 Oeiras, Portugal
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Jorg Thöming
- Chemical Process Engineering, University of Bremen, Leobener Straße 6, 28359 Bremen, Germany
| | - Stefan Stolte
- Institute of Water Chemistry, TU Dresden, 01062 Dresden, Germany
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Schaffert A, Krieg L, Weiner J, Schlichting R, Ueberham E, Karkossa I, Bauer M, Landgraf K, Junge KM, Wabitsch M, Lehmann J, Escher BI, Zenclussen AC, Körner A, Blüher M, Heiker JT, von Bergen M, Schubert K. Alternatives for the worse: Molecular insights into adverse effects of bisphenol a and substitutes during human adipocyte differentiation. ENVIRONMENT INTERNATIONAL 2021; 156:106730. [PMID: 34186270 DOI: 10.1016/j.envint.2021.106730] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Bisphenol A (BPA), which is used in a variety of consumer-related plastic products, was reported to cause adverse effects, including disruption of adipocyte differentiation, interference with obesity mechanisms, and impairment of insulin- and glucose homeostasis. Substitute compounds are increasingly emerging but are not sufficiently investigated.We aimed to investigate the mode of action of BPA and four of its substitutes during the differentiation of human preadipocytes to adipocytes and their molecular interaction with peroxisome proliferator-activated receptor γ (PPARγ), a pivotal regulator of adipogenesis.Binding and effective biological activation of PPARγ were investigated by surface plasmon resonance and reporter gene assay, respectively. Human preadipocytes were continuously exposed to BPA, BPS, BPB, BPF, BPAF, and the PPARγ-antagonist GW9662. After 12 days of differentiation, lipid production was quantified via Oil Red O staining, and global protein profiles were assessed using LC-MS/MS-based proteomics. All tested bisphenols bound to human PPARγ with similar efficacy as the natural ligand 15d-PGJ2in vitroand provoked an antagonistic effect on PPARγ in the reporter gene assay at non-cytotoxic concentrations. During the differentiation of human preadipocytes, all bisphenols decreased lipid production. Global proteomics displayed a down-regulation of adipogenesis and metabolic pathways, similar to GW9662. Interestingly, pro-inflammatory pathways were up-regulated, MCP1 release was increased, and adiponectin decreased. pAKT/AKT ratios revealed significantly reduced insulin sensitivity by BPA, BPB, and BPS upon insulin stimulation.Thus, our results show that not only BPA but also its substitutes disrupt crucial metabolic functions and insulin signaling in adipocytes under low, environmentally relevant concentrations. This effect, mediated through inhibition of PPARγ, may promote hypertrophy of adipose tissue and increase the risk of developing metabolic syndrome, including insulin resistance.
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Affiliation(s)
- Alexandra Schaffert
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Laura Krieg
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Juliane Weiner
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG), Leipzig, Germany; Department of Endocrinology, Nephrology Rheumatology, University Hospital Leipzig Medical Research Center, Leipzig, Germany
| | - Rita Schlichting
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Elke Ueberham
- Department of Therapy Validation, Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany
| | - Isabel Karkossa
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Mario Bauer
- Department of Environmental Immunology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Kathrin Landgraf
- Center for Pediatric Research, Hospital for Children & Adolescents, University of Leipzig, Leipzig, Germany
| | - Kristin M Junge
- Department of Environmental Immunology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Martin Wabitsch
- Division of Pediatric Endocrinology and Diabetes, Ulm University Medical Center, Ulm, Germany
| | - Jörg Lehmann
- Department of Therapy Validation, Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany
| | - Beate I Escher
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany; Environmental Toxicology, Center for Applied Geoscience, Eberhard Karls University Tübingen, Germany
| | - Ana C Zenclussen
- Department of Environmental Immunology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Antje Körner
- Center for Pediatric Research, Hospital for Children & Adolescents, University of Leipzig, Leipzig, Germany
| | - Matthias Blüher
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG), Leipzig, Germany; Department of Endocrinology, Nephrology Rheumatology, University Hospital Leipzig Medical Research Center, Leipzig, Germany
| | - John T Heiker
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG), Leipzig, Germany
| | - Martin von Bergen
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany; Institute of Biochemistry, Leipzig University, Leipzig, Germany
| | - Kristin Schubert
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany.
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61
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Gómez L, Niegowska M, Navarro A, Amendola L, Arukwe A, Ait-Aissa S, Balzamo S, Barreca S, Belkin S, Bittner M, Blaha L, Buchinger S, Busetto M, Carere M, Colzani L, Dellavedova P, Denslow N, Escher BI, Hogstrand C, Khan EA, König M, Kroll KJ, Lacchetti I, Maillot-Marechal E, Moscovici L, Potalivo M, Sanseverino I, Santos R, Schifferli A, Schlichting R, Sforzini S, Simon E, Shpigel E, Sturzenbaum S, Vermeirssen E, Viarengo A, Werner I, Lettieri T. Estrogenicity of chemical mixtures revealed by a panel of bioassays. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 785:147284. [PMID: 33957588 PMCID: PMC8210648 DOI: 10.1016/j.scitotenv.2021.147284] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 05/06/2023]
Abstract
Estrogenic compounds are widely released to surface waters and may cause adverse effects to sensitive aquatic species. Three hormones, estrone, 17β-estradiol and 17α-ethinylestradiol, are of particular concern as they are bioactive at very low concentrations. Current analytical methods are not all sensitive enough for monitoring these substances in water and do not cover mixture effects. Bioassays could complement chemical analysis since they detect the overall effect of complex mixtures. Here, four chemical mixtures and two hormone mixtures were prepared and tested as reference materials together with two environmental water samples by eight laboratories employing nine in vitro and in vivo bioassays covering different steps involved in the estrogenic response. The reference materials included priority substances under the European Water Framework Directive, hormones and other emerging pollutants. Each substance in the mixture was present at its proposed safety limit concentration (EQS) in the European legislation. The in vitro bioassays detected the estrogenic effect of chemical mixtures even when 17β-estradiol was not present but differences in responsiveness were observed. LiBERA was the most responsive, followed by LYES. The additive effect of the hormones was captured by ERα-CALUX, MELN, LYES and LiBERA. Particularly, all in vitro bioassays detected the estrogenic effects in environmental water samples (EEQ values in the range of 0.75-304 × EQS), although the concentrations of hormones were below the limit of quantification in analytical measurements. The present study confirms the applicability of reference materials for estrogenic effects' detection through bioassays and indicates possible methodological drawbacks of some of them that may lead to false negative/positive outcomes. The observed difference in responsiveness among bioassays - based on mixture composition - is probably due to biological differences between them, suggesting that panels of bioassays with different characteristics should be applied according to specific environmental pollution conditions.
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Affiliation(s)
- Livia Gómez
- European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027 Ispra, VA, Italy
| | - Magdalena Niegowska
- European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027 Ispra, VA, Italy
| | - Anna Navarro
- European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027 Ispra, VA, Italy
| | - Luca Amendola
- ARPA Lazio, Regional Agency for Environmental Protection, Via G. Saredo 52, 00173 Rome, Italy
| | - Augustine Arukwe
- Department of Biology, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
| | - Selim Ait-Aissa
- French National Institute for Industrial Environment and Risks (INERIS), UMR-I 02 SEBIO, 60550 Verneuil-en-Halatte, France
| | - Stefania Balzamo
- ISPRA - Environmental Metrology Unit, Via di Castel Romano 100, 00128 Rome, Italy
| | - Salvatore Barreca
- ARPA Lombardia, Regional Agency for Environmental Protection, Via Rosellini 17, 20124 Milan, Italy
| | - Shimshon Belkin
- Department of Plant and Environmental Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Michal Bittner
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, CZ62500 Brno, Czech Republic
| | - Ludek Blaha
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, CZ62500 Brno, Czech Republic
| | | | - Maddalena Busetto
- ARPA Lombardia, Regional Agency for Environmental Protection, Via Rosellini 17, 20124 Milan, Italy
| | - Mario Carere
- ISS-National Health Institute, Viale Regina Elena 299, 00161 Rome, Italy
| | - Luisa Colzani
- ARPA Lombardia, Regional Agency for Environmental Protection, Via Rosellini 17, 20124 Milan, Italy
| | - Pierluisa Dellavedova
- ARPA Lombardia, Regional Agency for Environmental Protection, Via Rosellini 17, 20124 Milan, Italy
| | - Nancy Denslow
- Center for Environmental & Human Toxicology, Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - Beate I Escher
- Department Cell Toxicology, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Christer Hogstrand
- Metal Metabolism Group, Department of Nutritional Sciences, Faculty of Life Sciences and Medicine, King's College London, 150 Stamford St, London SE1 9NH, UK
| | - Essa Ahsan Khan
- Department of Biology, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
| | - Maria König
- Department Cell Toxicology, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Kevin J Kroll
- Center for Environmental & Human Toxicology, Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - Ines Lacchetti
- ISS-National Health Institute, Viale Regina Elena 299, 00161 Rome, Italy
| | - Emmanuelle Maillot-Marechal
- French National Institute for Industrial Environment and Risks (INERIS), UMR-I 02 SEBIO, 60550 Verneuil-en-Halatte, France
| | - Liat Moscovici
- Department of Plant and Environmental Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Monica Potalivo
- ISPRA - Environmental Metrology Unit, Via di Castel Romano 100, 00128 Rome, Italy
| | - Isabella Sanseverino
- European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027 Ispra, VA, Italy
| | - Ricardo Santos
- Laboratório de Análises, Instituto Superior Tecnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Andrea Schifferli
- Swiss Centre for Applied Ecotoxicology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Rita Schlichting
- Department Cell Toxicology, Helmholtz Centre for Environmental Research - UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Susanna Sforzini
- Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment, National Research Council (CNR-IAS), Via de Marini 6, Genova 16149, Italy
| | - Eszter Simon
- Swiss Centre for Applied Ecotoxicology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Etai Shpigel
- Department of Plant and Environmental Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Stephen Sturzenbaum
- School of Population Health & Environmental Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, UK
| | - Etienne Vermeirssen
- Swiss Centre for Applied Ecotoxicology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Aldo Viarengo
- Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment, National Research Council (CNR-IAS), Via de Marini 6, Genova 16149, Italy
| | - Inge Werner
- Swiss Centre for Applied Ecotoxicology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Teresa Lettieri
- European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027 Ispra, VA, Italy.
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Klöckner P, Seiwert B, Weyrauch S, Escher BI, Reemtsma T, Wagner S. Comprehensive characterization of tire and road wear particles in highway tunnel road dust by use of size and density fractionation. CHEMOSPHERE 2021; 279:130530. [PMID: 33878695 DOI: 10.1016/j.chemosphere.2021.130530] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/30/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
Tire and road wear particles (TRWPs) are a major component of non-exhaust traffic emissions, but knowledge about their physico-chemical properties is limited. Road dust of a highway tunnel was fractionated by size and density, and fractions were analyzed for TRWPs, metals, seven tire tread indicator chemicals (benzothiazoles, 6-PPD and DPG) and effects in in-vitro bioassays. TRWP content in tunnel dust was very high (11-12%). The peak of the TRWP mass distribution was in the size fraction 20-50 μm, with 31-36% of the total TRWP mass and a content of up to 260 mg/g. The mass of organic tire constituents peaked in the smallest analyzed size fractions (<20 μm) with 35-55% of their total mass. They also peaked in the density fraction 1.3-1.7 g/cm³, indicating a lower TRWP density and a higher contribution of TP to TRWP (approx. 75%) than expected. Video-based shape analysis and SEM showed elongated particles, likely TRWPs, to be present in those size and density fractions ascribed to TRWPs by chemical analysis. But also irregular heteroagglomerates could be found. Solvent extracts of size and density fractions induced effects in bioassays indicative of the activation of the arylhydrocarbon receptor (AhR-CALUX) and the adaptive response to oxidative stress (AREc32). Similar comprehensive characterization of road dust from other sites may be needed to decide on whether TRWPs occurring in high concentrations in tunnel dust are suited as representative test materials for analytical purposes and TRWP fate studies.
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Affiliation(s)
- Philipp Klöckner
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Bettina Seiwert
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Steffen Weyrauch
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Beate I Escher
- Helmholtz-Centre for Environmental Research - UFZ, Department Cell Toxicology, Permoserstrasse 15, 04318, Leipzig, Germany; Eberhard-Karls-University Tübingen, Center for Applied Geoscience, Environmental Toxicology, Schnarrenbergstrasse 94-96, 72076, Tübingen, Germany
| | - Thorsten Reemtsma
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany; University of Leipzig, Institute of Analytical Chemistry, Linnéstrasse 3, 04103, Leipzig, Germany.
| | - Stephan Wagner
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany
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63
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Tentscher PR, Escher BI, Schlichting R, König M, Bramaz N, Schirmer K, von Gunten U. Toxic effects of substituted p-benzoquinones and hydroquinones in in vitro bioassays are altered by reactions with the cell assay medium. WATER RESEARCH 2021; 202:117415. [PMID: 34348209 DOI: 10.1016/j.watres.2021.117415] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/19/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
Substituted para-benzoquinones and hydroquinones are ubiquitous transformation products that arise during oxidative water treatment of phenolic precursors, for example through ozonation or chlorination. The benzoquinone structural motive is associated with mutagenicity and carcinogenicity, and also with induction of the oxidative stress response through the Nrf2 pathway. For either endpoint, toxicological data for differently substituted compounds are scarce. In this study, oxidative stress response, as indicated by the AREc32 in vitro bioassay, was induced by differently substituted para-benzoquinones, but also by the corresponding hydroquinones. Bioassays that indicate defense against genotoxicity (p53RE-bla) and DNA repair activity (UmuC) were not activated by these compounds. Stability tests conducted under incubation conditions, but in the absence of cell lines, showed that tested para-benzoquinones reacted rapidly with constituents of the incubation medium. Compounds were abated already in phosphate buffer, but even faster in biological media, with reactions attributed to amino- and thiol-groups of peptides, proteins, and free amino acids. The products of these reactions were often the corresponding substituted hydroquinones. Conversely, differently substituted hydroquinones were quantitatively oxidized to p-benzoquinones over the course of the incubation. The observed induction of the oxidative stress response was attributed to hydroquinones that are presumably oxidized to benzoquinones inside the cells. Despite the instability of the tested compounds in the incubation medium, the AREc32 in vitro bioassay could be used as an unspecific sum parameter to detect para-benzoquinones and hydroquinones in oxidatively treated waters.
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Affiliation(s)
- Peter R Tentscher
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf CH-8600, Switzerland; Department of Chemistry and Bioscience, Aalborg University, Aalborg 9220, Denmark
| | - Beate I Escher
- Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany; Center for Applied Geoscience, Eberhard Karls University of Tübingen, Schnarrenbergstr. 94-96, Tübingen 72076, Germany
| | - Rita Schlichting
- Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Maria König
- Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Nadine Bramaz
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf CH-8600, Switzerland
| | - Kristin Schirmer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf CH-8600, Switzerland; Department of Environmental Systems Science, ETH Zürich, Zürich CH-8092, Switzerland; Civil and Environmental Engineering (ENAC), School of Architecture, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Urs von Gunten
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf CH-8600, Switzerland; Civil and Environmental Engineering (ENAC), School of Architecture, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland.
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64
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Worden JR, Di Paolo C, Whale GF, Eadsforth CV, Michie E, Lindgren A, Smit MGD. Application of screening tools for environmental hazard and risk to support assessment and subsequent prioritization of effluent discharges from the oil and gas industry. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2021; 17:1025-1036. [PMID: 33615680 DOI: 10.1002/ieam.4400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/02/2020] [Accepted: 02/16/2021] [Indexed: 06/12/2023]
Abstract
Assessment and management of effluent discharges are key to avoiding environmental deterioration. Often compliance with discharge regulations and permits is based on a limited set of chemical parameters, while information on whole effluent hazardous properties (toxicity, bioaccumulation potential, persistence) and environmental risks is lacking. The need to collect those data and to become more effective in quickly identifying high-risk activities, without extensive laboratory testing, has led to the development of screening tools to complement information on chemical composition. A simple, Tier 1 screening "toolbox" is proposed which is comprised of solid-phase microextraction with gas chromatographic (SPME-GC) analysis, the in-vitro ecotoxicity assay Microtox, and a simple weathering assay. When combined with dilution modeling, screening-level risk assessments can be performed, providing additional lines of evidence to support a weight of evidence type of analysis. Application of the toolbox enables prioritization of discharges that may be deemed to require higher tier assessment. The toolbox was trialed on a number of produced water samples collected from offshore oil and gas facilities and effluents from petroleum processing and manufacturing sites. In contrast to what has been reported for petroleum products, results showed only moderate correlation between bioavailable hydrocarbons (bHCs) and toxicity, which might be related to the possible presence of toxic contaminants from other chemical classes or to methodological issues such as suboptimal conditions during transport. The methods employed were quick, inexpensive, and simple to conduct. They require relatively small volumes of sample, which is especially advantageous when evaluating discharges from remote offshore facilities. The toolbox adds valuable information on whole effluent properties to existing data, for example, on chemical composition, which can improve understanding of which discharges are more likely to pose a risk to the environment and so require further investigation or risk management. Integr Environ Assess Manag 2021;17:1025-1036. © 2021 Shell International B.V. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
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Affiliation(s)
- Joy R Worden
- Shell Health Risk Science Team, Manchester, United Kingdom
- QP Consulting (Chester) Limited, Chester, United Kingdom
| | | | - Graham F Whale
- Shell Health Risk Science Team, Manchester, United Kingdom
- Whale Environmental Consultancy Limited, Chester, United Kingdom
| | - Charles V Eadsforth
- Shell Health Risk Science Team, Manchester, United Kingdom
- CVE Consultancy Limited, Merseyside, United Kingdom
| | - Eleanor Michie
- Shell Health Risk Science Team, Manchester, United Kingdom
- Kalibrate, Manchester, United Kingdom
| | - Avila Lindgren
- Shell Health Risk Science Team, The Hague, the Netherlands
- Present Address: CaribAlgae, The Hague, the Netherlands
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65
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Chen Z, Lloyd D, Zhou YH, Chiu WA, Wright FA, Rusyn I. Risk Characterization of Environmental Samples Using In Vitro Bioactivity and Polycyclic Aromatic Hydrocarbon Concentrations Data. Toxicol Sci 2021; 179:108-120. [PMID: 33165562 DOI: 10.1093/toxsci/kfaa166] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Methods to assess environmental exposure to hazardous chemicals have primarily focused on quantification of individual chemicals, although chemicals often occur in mixtures, presenting challenges to the traditional risk characterization framework. Sampling sites in a defined geographic region provide an opportunity to characterize chemical contaminants, with spatial interpolation as a tool to provide estimates for non-sampled sites. At the same time, the use of in vitro bioactivity measurements has been shown to be informative for rapid risk-based decisions. In this study, we measured in vitro bioactivity in 39 surface soil samples collected immediately after flooding associated with Hurricane Harvey in Texas in a residential area known to be inundated with polycyclic aromatic hydrocarbon (PAH) contaminants. Bioactivity data were from a number of functional and toxicity assays in 5 human cell types, such as induced pluripotent stem cell-derived hepatocytes, cardiomyocytes, neurons, and endothelial cells, as well as human umbilical vein endothelial cells. Data on concentrations of PAH in these samples were also available and the combination of data sources offered a unique opportunity to assess the joint spatial variation of PAH components and bioactivity. We found significant evidence of spatial correlation of a subset of PAH contaminants and of cell-based phenotypes. In addition, we show that the cell-based bioactivity data can be used to predict environmental concentrations for several PAH contaminants, as well as overall PAH summaries and cancer risk. This study's impact lies in its demonstration that cell-based profiling can be used for rapid hazard screening of environmental samples by anchoring the bioassays to concentrations of PAH. This work sets the stage for identification of the areas of concern and direct quantitative risk characterization based on bioactivity data, thereby providing an important supplement to traditional individual chemical analyses by shedding light on constituents that may be missed from targeted chemical monitoring.
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Affiliation(s)
- Zunwei Chen
- Interdisciplinary Faculty of Toxicology.,Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas 77843
| | - Dillon Lloyd
- Bioinformatics Research Center.,Departments of Biological Sciences and Statistics, North Carolina State University, Raleigh, North Carolina 27695
| | - Yi-Hui Zhou
- Bioinformatics Research Center.,Departments of Biological Sciences and Statistics, North Carolina State University, Raleigh, North Carolina 27695
| | - Weihsueh A Chiu
- Interdisciplinary Faculty of Toxicology.,Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas 77843
| | - Fred A Wright
- Bioinformatics Research Center.,Departments of Biological Sciences and Statistics, North Carolina State University, Raleigh, North Carolina 27695
| | - Ivan Rusyn
- Interdisciplinary Faculty of Toxicology.,Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas 77843
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66
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Lee J, Braun G, Henneberger L, König M, Schlichting R, Scholz S, Escher BI. Critical Membrane Concentration and Mass-Balance Model to Identify Baseline Cytotoxicity of Hydrophobic and Ionizable Organic Chemicals in Mammalian Cell Lines. Chem Res Toxicol 2021; 34:2100-2109. [PMID: 34357765 DOI: 10.1021/acs.chemrestox.1c00182] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
All chemicals can interfere with cellular membranes and this leads to baseline toxicity, which is the minimal toxicity any chemical elicits. The critical membrane burden is constant for all chemicals; that is, the dosing concentrations to trigger baseline toxicity decrease with increasing hydrophobicity of the chemicals. Quantitative structure-activity relationships, based on hydrophobicity of chemicals, have been established to predict nominal concentrations causing baseline toxicity in human and mammalian cell lines. However, their applicability is limited to hydrophilic neutral compounds. To develop a prediction model that includes more hydrophobic and charged organic chemicals, a mass balance model was applied for mammalian cells (AREc32, AhR-CALUX, PPARγ-BLA, and SH-SY5Y) considering different bioassay conditions. The critical membrane burden for baseline toxicity was converted into nominal concentration causing 10% cytotoxicity by baseline toxicity (IC10,baseline) using a mass balance model whose main chemical input parameter was the liposome-water partition constants (Klip/w) for neutral chemicals or the speciation-corrected Dlip/w(pH 7.4) for ionizable chemicals plus the bioassay-specific protein, lipid, and water contents of cells and media. In these bioassay-specific models, log(1/IC10,baseline) increased with increasing hydrophobicity, and the relationship started to level off at log Dlip/w around 2. The bioassay-specific models were applied to 392 chemicals covering a broad range of hydrophobicity and speciation. Comparing the predicted IC10,baseline and experimental cytotoxicity IC10, known baseline toxicants and many additional chemicals were identified as baseline toxicants, while the others were classified based on specificity of their modes of action in the four cell lines, confirming excess toxicity of some fungicides, antibiotics, and uncouplers. Given the similarity of the bioassay-specific models, we propose a generalized baseline-model for adherent human cell lines: log[1/IC10,baseline (M)] = 1.23 + 4.97 × (1 - e-0.236 log Dlip/w). The derived models for baseline toxicity may serve for specificity analysis in reporter gene and neurotoxicity assays as well as for planning the dosing for cell-based assays.
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Affiliation(s)
- Jungeun Lee
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, DE-04318 Leipzig, Germany
| | - Georg Braun
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, DE-04318 Leipzig, Germany
| | - Luise Henneberger
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, DE-04318 Leipzig, Germany
| | - Maria König
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, DE-04318 Leipzig, Germany
| | - Rita Schlichting
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, DE-04318 Leipzig, Germany
| | - Stefan Scholz
- Department of Bioanalytical Toxicology, Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, DE-04318 Leipzig, Germany
| | - Beate I Escher
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, DE-04318 Leipzig, Germany.,Environmental Toxicology, Center for Applied Geoscience, Eberhard Karls University Tübingen, Scharrenbergstrasse 94-96, DE-72076 Tübingen, Germany
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67
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Sossalla NA, Nivala J, Reemtsma T, Schlichting R, König M, Forquet N, van Afferden M, Müller RA, Escher BI. Removal of micropollutants and biological effects by conventional and intensified constructed wetlands treating municipal wastewater. WATER RESEARCH 2021; 201:117349. [PMID: 34171643 DOI: 10.1016/j.watres.2021.117349] [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: 03/31/2021] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 06/13/2023]
Abstract
Seven treatment wetlands and a municipal wastewater treatment plant (WWTP) were weekly monitored over the course of one year for removal of conventional wastewater parameters, selected micropollutants (caffeine, ibuprofen, naproxen, benzotriazole, diclofenac, acesulfame, and carbamazepine) and biological effects. The treatment wetland designs investigated include a horizontal subsurface flow (HF) wetland and a variety of wetlands with intensification (aeration, two-stages, or reciprocating flow). Complementary to the common approach of analyzing individual chemicals, in vitro bioassays can detect the toxicity of a mixture of known and unknown components given in a water sample. A panel of five in vitro cell-based reporter gene bioassays was selected to cover environmentally relevant endpoints (AhR: indicative of activation of the aryl hydrocarbon receptor; PPARγ: binding to the peroxisome proliferator-activated receptor gamma; ERα: activation of the estrogen receptor alpha; GR: activation of the glucocorticoid receptor; oxidative stress response). While carbamazepine was persistent in the intensified treatment wetlands, mean monthly mass removal of up to 51% was achieved in the HF wetland. The two-stage wetland system showed highest removal efficacy for all biological effects (91% to >99%). The removal efficacy for biological effects ranged from 56% to 77% for the HF wetland and 60% to 99% for the WWTP. Bioanalytical equivalent concentrations (BEQs) for AhR, PPARγ, and oxidative stress response were often below the recommended effect-based trigger (EBT) values for surface water, indicating the great benefit for using nature-based solutions for water treatment. Intensified treatment wetlands remove both individual micropollutants and mixture effects more efficiently than conventional (non-aerated) HF wetlands, and in some cases, the WWTP.
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Affiliation(s)
- Nadine A Sossalla
- Centre for Environmental Biotechnology, Helmholtz Centre for Environmental Research (UFZ), Permoserstrasse 15, Leipzig 04318, Germany; Institute of Urban Water Management, Dresden University of Technology, Bergstrasse 66, Dresden 01069, Germany.
| | - Jaime Nivala
- Research Unit REVERSAAL, French National Research Institute for Agriculture, Food and Environment (INRAE), 5 rue de la Doua, CS 20244, Villeurbanne Cedex 69625, France.
| | - Thorsten Reemtsma
- Department of Analytical Chemistry, Helmholtz Centre for Environmental Research (UFZ), Permoserstrasse 15, Leipzig 04318, Germany; Institute of Analytical Chemistry, University of Leipzig, Linnéstrasse 3, Leipzig 04103, Germany.
| | - Rita Schlichting
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research (UFZ), Permoserstrasse 15, Leipzig 04318, Germany.
| | - Maria König
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research (UFZ), Permoserstrasse 15, Leipzig 04318, Germany.
| | - Nicolas Forquet
- Research Unit REVERSAAL, French National Research Institute for Agriculture, Food and Environment (INRAE), 5 rue de la Doua, CS 20244, Villeurbanne Cedex 69625, France.
| | - Manfred van Afferden
- Centre for Environmental Biotechnology, Helmholtz Centre for Environmental Research (UFZ), Permoserstrasse 15, Leipzig 04318, Germany.
| | - Roland A Müller
- Centre for Environmental Biotechnology, Helmholtz Centre for Environmental Research (UFZ), Permoserstrasse 15, Leipzig 04318, Germany.
| | - Beate I Escher
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research (UFZ), Permoserstrasse 15, Leipzig 04318, Germany; Center for Applied Geoscience, Eberhard Karls University Tübingen, Schnarrenbergstraße 94-96, Tübingen 72076, Germany.
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68
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Yang Y, Chen Z, Zhang J, Wu S, Yang L, Chen L, Shao Y. The challenge of micropollutants in surface water of the Yangtze River. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 780:146537. [PMID: 33774309 DOI: 10.1016/j.scitotenv.2021.146537] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 03/10/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
The Yangtze River, the third largest river and supporting nearly one-third of Chinese population, has been severely polluted in recent decades. Among the numerous pollutants, organic micropollutants, as one kind of important emerging contaminants, are currently key contaminants of concern. However, few studies have focused on their mixture environmental impacts, especially for the complex environmental mixtures. In the current study, four categories of organic micropollutants, including 16 polycyclic aromatic hydrocarbons (PAHs), 32 polychlorinated biphenyls (PCBs), 27 organochlorine pesticides (OCPs) and 20 pharmaceutical and personal care products (PPCPs) are analyzed in 10 study sites on the Yangtze River. Subsequently, comprehensive risk assessment for micropollutant mixtures was conducted by risk quotient based on the sum of PEC/PNEC values (RQMEC/PNEC) and risk quotient based on the toxic units (RQSTU). The mixture risk evaluation based on the detected environmental concentrations indicates that micropollutant mixtures in surface water of the Yangtze River exhibited relative high risks for aquatic organisms. The observed results revealed that mixture risk assessments have to consider the complexity of environmental samples; PCBs dominated main mixture risks in the upper stream; PAHs contributed major comprehensive risks in the middle stream; and OCPs were the key micropollutants in the downstream. The outcomes of the present study here can serve for pollution control in the Yangtze River, which provide the scientific underpinnings and regulatory reference for risk management and river protection.
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Affiliation(s)
- Yinjie Yang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, College of Environment and Ecology, Chongqing University, Chongqing 400030, PR China
| | - Zhongli Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, College of Environment and Ecology, Chongqing University, Chongqing 400030, PR China
| | - Jialing Zhang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, College of Environment and Ecology, Chongqing University, Chongqing 400030, PR China
| | - Siqi Wu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, College of Environment and Ecology, Chongqing University, Chongqing 400030, PR China
| | - Li Yang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, College of Environment and Ecology, Chongqing University, Chongqing 400030, PR China
| | - Lin Chen
- Department of Otorhinolaryngology, The first Hospital Affiliated to Army Medical University (Southwest Hospital), Chongqing 400038, PR China
| | - Ying Shao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, College of Environment and Ecology, Chongqing University, Chongqing 400030, PR China.
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69
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Baumer A, Jäsch S, Ulrich N, Bechmann I, Landmann J, Escher BI. Kinetics of Equilibrium Passive Sampling of Organic Chemicals with Polymers in Diverse Mammalian Tissues. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:9097-9108. [PMID: 34143604 DOI: 10.1021/acs.est.1c01836] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Equilibrium passive sampling employing polydimethylsiloxane (PDMS) as a sampling phase can be used for the extraction of complex mixtures of organic chemicals from lipid-rich biota. We extended the method to lean tissues and more hydrophilic chemicals by implementing a mass-balance model for partitioning between lipids, proteins, and water in tissues and by accelerating uptake kinetics with a custom-built stirrer that effectively decreased time to equilibrium to less than 8 days even for a homogenized liver tissue with an only 4% lipid content. The partition constants log Klipid/PDMS between tissues and PDMS were derived from measured concentration in PDMS and the mass-balance model and were very similar for 40 neutral chemicals with octanol-water partition constants 1.4 < log Kow < 8.7, that is, log Klipid/PDMS of 1.26 (95% CI, 1.13-1.39) for the adipose tissue, 1.16 (1.00-1.33) for the liver, and 0.58 (0.42-0.73) for the brain. This conversion factor can be applied to interpret chemical analysis and in vitro bioassays after additionally accounting for a small fraction of coextracted lipids of <0.7% of the PDMS weight. PDMS is more widely applicable for passive sampling of mammalian tissues than previously thought, both, in terms of diversity of chemicals and the range of lipid contents of tissues and, therefore, an ideal method for human biomonitoring to be combined with in vitro bioassays.
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Affiliation(s)
- Andreas Baumer
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, 04318 Leipzig, Germany
| | - Sandra Jäsch
- Department of Analytical Environmental Chemistry, Helmholtz Centre for Environmental Research-UFZ, 04318 Leipzig, Germany
| | - Nadin Ulrich
- Department of Analytical Environmental Chemistry, Helmholtz Centre for Environmental Research-UFZ, 04318 Leipzig, Germany
| | - Ingo Bechmann
- Institute of Anatomy, University of Leipzig, 04103 Leipzig, Germany
| | - Julia Landmann
- Institute of Anatomy, University of Leipzig, 04103 Leipzig, Germany
| | - Beate I Escher
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, 04318 Leipzig, Germany
- Environmental Toxicology, Centre for Applied Geosciences, Eberhard Karls University of Tübingen, 72076 Tübingen, Germany
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70
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Cheng F, Li H, Brooks BW, You J. Signposts for Aquatic Toxicity Evaluation in China: Text Mining using Event-Driven Taxonomy within and among Regions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:8977-8986. [PMID: 34142809 DOI: 10.1021/acs.est.1c00152] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Selection of toxicity endpoints affects outcomes of risk assessment. Scientific decisions based on more holistic evidence is preferable for designing bioassay batteries rather than subjective selections, particularly when systems are poorly understood. Here, we propose a novel event-driven taxonomy (EDT)-based text mining tool to prioritize stressors likely to elicit water quality deterioration. The tool integrated automated literature collection, natural language processing using adverse outcome pathway-based toxicological terminologies and machine learning to classify event drivers (EDs). From aquatic toxicity assessments within China over the past decade, we gathered over 14 000 sources of information. With a dictionary that included 1039 toxicological terms, 15 bioassay-related modes of actions were mapped, yet less than half of the bioassays could be elucidated by available adverse outcome pathways. To fill these mechanistic knowledge gaps, we developed a Naïve Bayesian ED-classifier to annotate apical responses. The classifier's 4-fold cross-validation reached 74% accuracy and labeled 85% bioassays as 26 EDs. Narcosis, estrogen receptor-, and aryl hydrogen receptor-mediators were the major EDs in aquatic systems across China, whereas individual regions had distinct ED fingerprints. The EDT-based tool provides a promising diagnostic strategy to inform region-specific bioassay design and selection for water quality assessments in a big data era.
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Affiliation(s)
- Fei Cheng
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Huizhen Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Bryan W Brooks
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
- Department of Environmental Science, Institute of Biomedical Studies, Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, Texas 76798, United States
| | - Jing You
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
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71
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Chen R, Zhang Q, Chen H, Yue W, Teng Y. Source apportionment of heavy metals in sediments and soils in an interconnected river-soil system based on a composite fingerprint screening approach. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125125. [PMID: 33486225 DOI: 10.1016/j.jhazmat.2021.125125] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/07/2021] [Accepted: 01/09/2021] [Indexed: 05/22/2023]
Abstract
Heavy metal pollution has been a global concern and key points of environmental pollution prevention and control due to the growing problems of urbanization and industrialization. Rapidly and correctly apportioning sources of heavy metal is still a great challenge because of the stability of source fingerprint and complex interaction of multiple contaminants and sources. In this study, we perform a combination of optimization of pollution source fingerprint and source apportionment through jointly utilizing two machine classification and screening methods for characterizing the pollution sources of heavy metal in the sediments of an urban river and its surrounding soils. Dominance-based rough set model (DRS), content optimization tools, and multivariate curve resolution-alternating least squares model (MCR-WALS) were employed to screen representative pollution source samples, optimize pollution source fingerprint, and apportion the potential sources of heavy metals, respectively. Further, Support vector machine (SVM) was adopted to correspondence analysis results and pollution fingerprint based on the factor characteristics for achieving source apportionment accurately. Results showed that the pollution source pollution source fingerprints optimized by DRS and optimization tools are more representative and stable, and the results obtained by SVM and MCR-WALS are more accurate comparing with traditional methods. As whole, source apportionment suggested that printing and dyeing, chemical, electroplating, metal processing were the main origins of heavy metals in this area and the proportions of them in sediment and soil pollution sources were 67.05% and 28.43%, respectively. Besides, coal combustion was also the main sources of heavy metal pollution in soils, accounting about 34.16%. Results of the study can advance our knowledge to better understand the characterization of heavy metal pollution in the peri-urban ecosystem and to design effective targeted strategies for reducing heavy metal pollution diffusion.
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Affiliation(s)
- Ruihui Chen
- Key Laboratory of Nonpoint Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, 100081, China
| | - Qianru Zhang
- Key Laboratory of Nonpoint Source Pollution Control, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, 100081, China.
| | - Haiyang Chen
- College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Weifeng Yue
- College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Yanguo Teng
- College of Water Sciences, Beijing Normal University, Beijing 100875, China.
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72
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Adams E, Neves BB, Prola LDT, de Liz MV, Martins LRR, Ramsdorf WA, de Freitas AM. Ecotoxicity and genotoxicity assessment of losartan after UV/H 2O 2 and UVC/photolysis treatments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:23812-23821. [PMID: 33145733 PMCID: PMC7609376 DOI: 10.1007/s11356-020-11420-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/26/2020] [Indexed: 04/15/2023]
Abstract
Losartan potassium (LOS) is one of the most antihypertensives used in the world, and its presence in environmental matrices can cause impacts to biota. In this study, the ecotoxicity and genotoxicity of LOS was assessed before and after treatment by UVC/photolysis and UV/H2O2. The photodegradations were carried out at LOS solutions (2.5 mg L-1; 4.6 μM) for 30, 60, 90, 120, 240, and 480 min of treatment. For chromatographic analysis, the samples were submitted to solid-phase extraction (SPE) and analyzed by HPLC-DAD. Ecotoxicity bioassays were conducted using Daphnia magna (acute) and Desmodesmus subspicatus (chronic) for all the degradation times. To evaluate the genotoxicity, the comet assay was performed with a D. magna whole organism cell suspension applying the alkaline gel electrophoresis technique. For both process, the degradation rate was over 99% at 30 min, which reduced the acute toxicity of LOS to D. magna. In addition, only the sample treated at 240 min by UV/H2O2 showed significant chronic and acute toxicity. However, the genotoxicity effect was observed for samples treated LOS before treatment and at 480 min by UV/H2O2. Therefore, even reaching high LOS degradation rates, for both processes, the bioassays demonstrated the importance of ecotoxicological analyses by AOPs treatment.
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Affiliation(s)
- Eliane Adams
- Laboratory of Ecotoxicology, Department of Chemistry and Biology, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil
| | - Bruno B Neves
- Multiuser Laboratory of Environmental Analysis-LAMEAA, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil
| | - Liziê D T Prola
- Research Group on Water and Wastewater Advanced Treatment Technologies-GPTec, Department of Chemistry and Biology, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil
| | - Marcus V de Liz
- Research Group on Water and Wastewater Advanced Treatment Technologies-GPTec, Department of Chemistry and Biology, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil
| | - Lucia R R Martins
- Laboratory of Ecotoxicology, Department of Chemistry and Biology, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil
- Multiuser Laboratory of Environmental Analysis-LAMEAA, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil
| | - Wanessa A Ramsdorf
- Laboratory of Ecotoxicology, Department of Chemistry and Biology, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil
| | - Adriane M de Freitas
- Laboratory of Ecotoxicology, Department of Chemistry and Biology, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil.
- Multiuser Laboratory of Environmental Analysis-LAMEAA, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil.
- Research Group on Water and Wastewater Advanced Treatment Technologies-GPTec, Department of Chemistry and Biology, Federal University of Technology-Paraná, Curitiba, Paraná, Brazil.
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73
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Niu L, Ahlheim J, Glaser C, Gunold R, Henneberger L, König M, Krauss M, Schwientek M, Zarfl C, Escher BI. Suspended Particulate Matter-A Source or Sink for Chemical Mixtures of Organic Micropollutants in a Small River under Baseflow Conditions? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:5106-5116. [PMID: 33759504 DOI: 10.1021/acs.est.0c07772] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Suspended particulate matter (SPM) plays an important role in the fate of organic micropollutants in rivers during rain events, when sediments are remobilized and turbid runoff components enter the rivers. Under baseflow conditions, the SPM concentration is low and the contribution of SPM-bound contaminants to the overall risk of organic contaminants in rivers is assumed to be negligible. To challenge this assumption, we explored if SPM may act as a source or sink for all or specific groups of organic chemicals in a small river. The concentrations of over 600 contaminants and the mixture effects stemming from all chemicals in in vitro bioassays were measured for river water, SPM, and the surface sediment after solid-phase extraction or exhaustive solvent extraction. The bioavailable fractions of chemicals and mixture effects were estimated after passive equilibrium sampling of enriched SPM slurries and sediments in the lab. Dissolved compounds dominated the total chemical burden in the water column (water plus SPM) of the river, whereas SPM-bound chemicals contributed up to 46% of the effect burden even if the SPM concentration in rivers was merely 1 mg/L. The equilibrium between water and SPM was still not reached under low-flow conditions with SPM as a source of water contamination. The ratios of SPM-associated to sediment-associated neutral and hydrophobic chemicals as well as the ratios of the mixture effects expressed as bioanalytical equivalent concentrations were close to 1, suggesting that the surface sediment can be used as a proxy for SPM under baseflow conditions when the sampling of a large amount of water to obtain sufficient SPM cannot be realized.
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Affiliation(s)
| | | | - Clarissa Glaser
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Schnarrenbergstr. 94-96, 72076 Tübingen, Germany
| | | | | | | | | | - Marc Schwientek
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Schnarrenbergstr. 94-96, 72076 Tübingen, Germany
| | - Christiane Zarfl
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Schnarrenbergstr. 94-96, 72076 Tübingen, Germany
| | - Beate I Escher
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Schnarrenbergstr. 94-96, 72076 Tübingen, Germany
- Department Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, 04318 Leipzig, Germany
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74
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Villanueva CM, Grau-Pujol B, Evlampidou I, Escola V, Goñi-Irigoyen F, Kuckelkorn J, Grummt T, Arjona L, Lazaro B, Etxeandia A, Ulibarrena E, Nhacolo A, Muñoz J. Chemical and in vitro bioanalytical assessment of drinking water quality in Manhiça, Mozambique. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2021; 31:276-288. [PMID: 33414480 DOI: 10.1038/s41370-020-00282-5] [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: 06/19/2020] [Revised: 11/06/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND The chemical quality of drinking water is widely unknown in low-income countries. OBJECTIVE We conducted an exploratory study in Manhiça district (Mozambique) to evaluate drinking water quality using chemical analyses and cell-based assays. METHODS We measured nitrate, fluoride, metals, pesticides, disinfection by-products, and industrial organochlorinated chemicals, and conducted the bioassays Ames test for mutagenicity, micronuclei assay (MN-FACS), ER-CALUX, and antiAR-CALUX in 20 water samples from protected and unprotected sources. RESULTS Nitrate was present in all samples (median 7.5 mg/L). Manganese, cobalt, chromium, aluminium, and barium were present in 90-100% of the samples, with median values of 32, 0.6, 2.0, 61, 250 μg/l, respectively. Manganese was above 50 μg/l (EU guideline) in eight samples. Arsenic, lead, nickel, iron, and selenium median values were below the quantification limit. Antimony, cadmium, copper, mercury, zinc and silver were not present. Trihalomethanes, haloacetic acids, haloacetonitriles and haloketones were present in 5-28% samples at levels ≤4.6 μg/l. DDT, dieldrin, diuron, and pirimiphos-methyl were quantified in 2, 3, 3, and 1 sample, respectively (range 12-60 ng/L). Fluoride was present in one sample (0.11 mg/l). Trichloroethene and tetrachloroethene were not present. Samples were negative in the in vitro assays. SIGNIFICANCE Results suggest low exposure to chemicals, mutagenicity, genotoxicity and endocrine disruption through drinking water in Manhiça population. High concentration of manganese in some samples warrants confirmatory studies, given the potential link to impaired neurodevelopment.
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Affiliation(s)
- Cristina M Villanueva
- ISGlobal, Barcelona, Spain.
- CIBER epidemiología y salud pública (CIBERESP), Madrid, Spain.
- Universitat Pompeu Fabra, Barcelona, Spain.
- IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.
| | - Berta Grau-Pujol
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
- Centro de Investigação em Saúde da Manhiça (CISM), Maputo, Mozambique
- Fundación Mundo Sano, Buenos Aires, Argentina
| | - Iro Evlampidou
- ISGlobal, Barcelona, Spain
- CIBER epidemiología y salud pública (CIBERESP), Madrid, Spain
- Universitat Pompeu Fabra, Barcelona, Spain
| | - Valdemiro Escola
- Centro de Investigação em Saúde da Manhiça (CISM), Maputo, Mozambique
| | - Fernando Goñi-Irigoyen
- CIBER epidemiología y salud pública (CIBERESP), Madrid, Spain
- Health Department of Basque Government, Public Health Laboratory (Gipuzkoa), San Sebastian, Spain
- Biodonostia Health Research Institute, San Sebastian, Spain
| | - Jochen Kuckelkorn
- Toxicology of Drinking Water and Swimming Pool Water, German Environment Agency, Bad Elster, Germany
| | - Tamara Grummt
- Toxicology of Drinking Water and Swimming Pool Water, German Environment Agency, Bad Elster, Germany
| | - Lourdes Arjona
- ISGlobal, Barcelona, Spain
- CIBER epidemiología y salud pública (CIBERESP), Madrid, Spain
- Universitat Pompeu Fabra, Barcelona, Spain
- IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Beatriz Lazaro
- Health Department of Basque Government, Public Health Laboratory (Bizkaia), Derio, Spain
| | - Arsenio Etxeandia
- Health Department of Basque Government, Public Health Laboratory (Bizkaia), Derio, Spain
| | - Enrique Ulibarrena
- Health Department of Basque Government, Public Health Laboratory (Gipuzkoa), San Sebastian, Spain
| | - Ariel Nhacolo
- Centro de Investigação em Saúde da Manhiça (CISM), Maputo, Mozambique
| | - Jose Muñoz
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
- Centro de Investigação em Saúde da Manhiça (CISM), Maputo, Mozambique
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Oskarsson A, Rosenmai AK, Mandava G, Johannisson A, Holmes A, Tröger R, Lundqvist J. Assessment of source and treated water quality in seven drinking water treatment plants by in vitro bioassays - Oxidative stress and antiandrogenic effects after artificial infiltration. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:144001. [PMID: 33338789 DOI: 10.1016/j.scitotenv.2020.144001] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/10/2020] [Accepted: 11/15/2020] [Indexed: 06/12/2023]
Abstract
Drinking water quality and treatment efficacy was investigated in seven drinking water treatment plants (DWTPs), using water from the river Göta Älv, which also is a recipient of treated sewage water. A panel of cell-based bioassays was used, including measurements of receptor activity of aryl hydrocarbon (AhR), estrogen (ER), androgen (AR), peroxisome proliferator-activated receptor alpha (PPARα) as well as induction of oxidative stress (Nrf2) and micronuclei formation. Grab water samples were concentrated by solid phase extraction (SPE) and water samples were analyzed at a relative enrichment factor of 50. High activities of AhR, ER and AR antagonism were present in WWTP outlets along the river. Inlet water from the river exhibited AhR and AR antagonistic activities. AhR activity was removed by DWTPs using granulated activated carbon (GAC) and artificial infiltration. AR antagonistic activity was removed by the treatment plants, except the artificial infiltration plant, which actually increased the activity. Furthermore, treated drinking water from the DWTP using artificial infiltration exhibited high Nrf2 activity, which was not found in any of the other water samples. Nrf2 activity was found in water from eight of the 13 abstraction wells, collecting water from the artificial infiltration. No genotoxic activity was detected at non-cytotoxic concentrations. No Nrf2 or AR antagonistic activities were detected in the inlet or outlet water after the DWTP had been replaced by a new plant, using membrane ultrafiltration and GAC. Neither target chemical analysis, nor chemical analysis according to the drinking water regulation, detected any presence of chemicals, which could be responsible of the prominent effects on oxidative stress and AR antagonistic activity in the drinking water samples. Thus, bioanalysis is a useful tool for detection of unknown hazards in drinking water and for assessment of drinking water treatments.
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Affiliation(s)
- Agneta Oskarsson
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7028, SE-750 07 Uppsala, Sweden.
| | - Anna Kjerstine Rosenmai
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7028, SE-750 07 Uppsala, Sweden
| | - Geeta Mandava
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7028, SE-750 07 Uppsala, Sweden
| | - Anders Johannisson
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Box 7054, SE-750 07 Uppsala, Sweden
| | - Andrew Holmes
- Kungälv Drinking Water Treatment Plant, Filaregatan 15, SE-442 81 Kungälv, Sweden
| | - Rikard Tröger
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Box 7050, SE-750 07 Uppsala, Sweden
| | - Johan Lundqvist
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7028, SE-750 07 Uppsala, Sweden
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76
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Escher BI, Neale PA. Effect-Based Trigger Values for Mixtures of Chemicals in Surface Water Detected with In Vitro Bioassays. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:487-499. [PMID: 33252775 DOI: 10.1002/etc.4944] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/04/2020] [Accepted: 11/23/2020] [Indexed: 05/12/2023]
Abstract
Effect-based trigger (EBT) values for in vitro bioassays are important for surface water quality monitoring because they define the threshold between acceptable and poor water quality. They have been derived for highly specific bioassays, such as hormone-receptor activation in reporter gene bioassays, by reading across from existing chemical guideline values. This read-across method is not easily applicable to bioassays indicative of adaptive stress responses, which are triggered by many different chemicals, and activation of nuclear receptors for xenobiotic metabolism, to which many chemicals bind with rather low specificity. We propose an alternative approach to define the EBT from the distribution of specificity ratios of all active chemicals. The specificity ratio is the ratio between the predicted baseline toxicity of a chemical in a given bioassay and its measured specific endpoint. Unlike many previous read-across methods to derive EBTs, the proposed method accounts for mixture effects and includes all chemicals, not only high-potency chemicals. The EBTs were derived from a cytotoxicity EBT that was defined as equivalent to 1% of cytotoxicity in a native surface water sample. The cytotoxicity EBT was scaled by the median of the log-normal distribution of specificity ratios to derive the EBT for effects specific for each bioassay. We illustrate the new approach using the example of the AREc32 assay, indicative of the oxidative stress response, and 2 nuclear receptor assays targeting the peroxisome proliferator-activated receptor gamma and the arylhydrocarbon receptor. The EBTs were less conservative than previously proposed but were able to differentiate untreated and insufficiently treated wastewater from wastewater treatment plant effluent with secondary or tertiary treatment and surface water. Environ Toxicol Chem 2021;40:487-499. © 2020 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Beate I Escher
- Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Peta A Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, Queensland, Australia
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Müller ME, Zwiener C, Escher BI. Storm Event-Driven Occurrence and Transport of Dissolved and Sorbed Organic Micropollutants and Associated Effects in the Ammer River, Southwestern Germany. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:88-99. [PMID: 33079390 DOI: 10.1002/etc.4910] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/11/2020] [Accepted: 10/16/2020] [Indexed: 06/11/2023]
Abstract
Storm events lead to agricultural and urban runoff, to mobilization of contaminated particulate matter, and to input from combined sewer overflows into rivers. We conducted time-resolved sampling during a storm event at the Ammer River, southwest Germany, which is representative of small river systems in densely populated areas with a temperate climate. Suspended particulate matter (SPM) and water from 2 sampling sites were separately analyzed by a multi-analyte liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for 97 environmentally relevant organic micropollutants and with 2 in vitro bioassays. Oxidative stress response (AREc32) may become activated by various stressors covering a broad range of physicochemical properties and induction of aryl hydrocarbon receptor-chemical-activated luciferase gene expression (AhR-CALUX) by hydrophobic compounds such as dioxins and dioxin-like molecules. Compound numbers, concentrations, their mass fluxes, and associated effect fluxes increased substantially during the storm event. Micropollutants detected in water and on SPM pointed toward inputs from combined sewer overflow (e.g., caffeine, paracetamol), urban runoff (e.g., mecoprop, terbutryn), and agricultural areas (e.g., azoxystrobin, bentazone). Particle-facilitated transport of triphenylphosphate and tris(1-chloro-2-propyl) phosphate accounted for up to 34 and 33% of the total mass flux even though SPM concentrations were <1 g L-1 . Effect fluxes attributed to SPM were similar or higher than in the water phase. The important role of SPM-bound transport emphasizes the need to consider not only concentrations but also mass and effect fluxes for surface water quality assessment and wastewater/stormwater treatment options. Environ Toxicol Chem 2021;40:88-99. © 2020 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Maximilian E Müller
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Christian Zwiener
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Beate I Escher
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
- Department of Cell Toxicology, UFZ-Helmholtz Centre for Environmental Research, Leipzig, Germany
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78
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Shao Y, Schiwy A, Glauch L, Henneberger L, König M, Mühlenbrink M, Xiao H, Thalmann B, Schlichting R, Hollert H, Escher BI. Optimization of a pre-metabolization procedure using rat liver S9 and cell-extracted S9 in the Ames fluctuation test. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 749:141468. [PMID: 32827816 DOI: 10.1016/j.scitotenv.2020.141468] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 08/01/2020] [Accepted: 08/02/2020] [Indexed: 06/11/2023]
Abstract
Many environmental pollutants pose a toxicological hazard only after metabolic activation. In vitro bioassays using cell lines or bacteria have often no or reduced metabolic activity, which impedes their use in the risk assessment. To improve the predictive capability of in vitro assays, external metabolization systems like the liver S9 fraction are frequently combined with in vitro toxicity assays. While it is typical for S9 fractions that samples and testing systems are combined in the same exposure system, we propose to separate the metabolism step and toxicity measurement. This allows for a modular combination of metabolic activation by enzymes isolated from rat liver (S9) or a biotechnological alternative (ewoS9R) with in vitro bioassays that lack metabolic capacity. Benzo(a)pyrene and 2-aminoanthracene were used as model compounds to optimize the conditions for the S9 metabolic degradation/activation step. The Ames assay with Salmonella typhimurium strains TA98 and TA100 was applied to validate the set-up of decoupling the S9 activation/metabolism from the bioassay system. S9 protein concentration of 0.25 mgprotein/mL, a supplement of 0.13 mM NADPH and a pre-incubation time of 100 min are recommended for activation of samples prior to dosing them to in vitro bioassays using the regular dosing protocols of the respective bioassay. EwoS9R performed equally well as Moltox S9, which is a step forward in developing true animal-free in vitro bioassays. After pre-incubation with S9 fraction, chemicals induced bacteria revertants in both the TA98 and the TA100 assay as efficiently as the standard Ames assay. The pre-incubation of chemicals with S9 fraction could serve for a wide range of cellular in vitro assays to efficiently combine activation and toxicity measurement, which may greatly facilitate the application of these assays for chemical hazard assessment and monitoring of environmental samples.
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Affiliation(s)
- Ying Shao
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany; Key Laboratory of the Three Gorges Reservoir Eco-environment, Ministry of Education, Chongqing University, Shazheng street 174, Shapingba, 400044 Chongqing, China.
| | - Andreas Schiwy
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany; EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany; Department of Evolutionary Ecology and Ecotoxicology, Goethe University, Max-von-Laue-Str. 13, 60438 Frankfurt/Main, Germany
| | - Lisa Glauch
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Luise Henneberger
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Maria König
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Marie Mühlenbrink
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Hongxia Xiao
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany; EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany
| | - Beat Thalmann
- EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany
| | - Rita Schlichting
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Henner Hollert
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany; EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany; Department of Evolutionary Ecology and Ecotoxicology, Goethe University, Max-von-Laue-Str. 13, 60438 Frankfurt/Main, Germany
| | - Beate I Escher
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany; EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany; Eberhard Karls University of Tübingen, Environmental Toxicology, Centre for Applied Geosciences, 72074 Tubingen, Germany
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79
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Muz M, Escher BI, Jahnke A. Bioavailable Environmental Pollutant Patterns in Sediments from Passive Equilibrium Sampling. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:15861-15871. [PMID: 33213151 DOI: 10.1021/acs.est.0c05537] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Sediment-associated risks depend on the bioavailable fraction of organic chemicals and cannot be comprehended by their total concentrations. The present study investigated contamination patterns of bioavailable chemicals in sediments from various sites around the globe by using passive equilibrium sampling. The extracts had been characterized previously for mixture effects by in vitro reporter gene assays and were in this study analyzed using gas chromatography-high resolution mass spectrometry for 121 chemicals including both legacy and emerging contaminants. The spatial distribution of the detected chemicals revealed distinct contamination patterns among sampling sites. We identified compounds in common at the different sites but most contaminant mixtures were site-specific. The mixture effects of the detected chemicals were predicted with a mixture toxicity model from effect concentrations of bioactive single chemicals and detected concentrations, applying a joint model for concentration addition and independent action. The predicted mixture effects were dominated by polycyclic aromatic hydrocarbons, and among the chemicals with available effect data, 17% elicited oxidative stress response and 18% activated the arylhydrocarbon receptor. Except for two sites in Sweden, where 11 and 38% of the observed oxidative stress response were explained by the detected chemicals, less than 10% of effects in both biological end points were explained. These results provide a comprehensive investigation of bioavailable contamination patterns of sediments and may serve as an example of employing passive equilibrium sampling as a monitoring technique to integrate the risk of bioavailable sediment-associated chemicals in aquatic environments.
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Affiliation(s)
- Melis Muz
- Department of Cell Toxicology, UFZ Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany
- Department of Effect Directed Analysis, UFZ Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany
| | - Beate I Escher
- Department of Cell Toxicology, UFZ Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany
- Environmental Toxicology, Center for Applied Geoscience, Eberhard Karls University Tübingen, Schnarrenbergstr. 94-96, 72076 Tübingen, Germany
| | - Annika Jahnke
- Department of Cell Toxicology, UFZ Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany
- Department of Ecological Chemistry, UFZ Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany
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80
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Neale PA, O’Brien JW, Glauch L, König M, Krauss M, Mueller JF, Tscharke B, Escher BI. Wastewater treatment efficacy evaluated with in vitro bioassays. WATER RESEARCH X 2020; 9:100072. [PMID: 33089130 PMCID: PMC7559864 DOI: 10.1016/j.wroa.2020.100072] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/19/2020] [Accepted: 09/30/2020] [Indexed: 05/05/2023]
Abstract
Bioassays show promise as a complementary approach to chemical analysis to assess the efficacy of wastewater treatment processes as they can detect the mixture effects of all bioactive chemicals in a sample. We investigated the treatment efficacy of ten Australian wastewater treatment plants (WWTPs) covering 42% of the national population over seven consecutive days. Solid-phase extracts of influent and effluent were subjected to an in vitro test battery with six bioassays covering nine endpoints that captured the major modes of action detected in receiving surface waters. WWTP influents and effluents were compared on the basis of population- and flow-normalised effect loads, which provided insights into the biological effects exhibited by the mixture of chemicals before and after treatment. Effect removal efficacy varied between effect endpoints and depended on the treatment process. An ozonation treatment step had the best treatment efficacy, while WWTPs with only primary treatment resulted in poor removal of effects. Effect removal was generally better for estrogenic effects and the peroxisome proliferator-activated receptor than for inhibition of photosynthesis, which is consistent with the persistence of herbicides causing this effect. Cytotoxicity and oxidative stress response provided a sum parameter of all bioactive chemicals including transformation products and removal was poorer than for specific endpoints except for photosynthesis inhibition. Although more than 500 chemicals were analysed, the detected chemicals explained typically less than 10% of the measured biological effect, apart from algal toxicity, where the majority of the effect could be explained by one dominant herbicide, diuron. Overall, the current study demonstrated the utility of applying bioassays alongside chemical analysis to evaluate loads of chemical pollution reaching WWTPs and treatment efficacy.
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Affiliation(s)
- Peta A. Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, QLD, 4222, Australia
- QAEHS – Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland, 4102, Australia
- Corresponding author. Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, QLD, 4222, Australia.
| | - Jake W. O’Brien
- QAEHS – Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland, 4102, Australia
| | - Lisa Glauch
- UFZ – Helmholtz Centre for Environmental Research, 04318, Leipzig, Germany
| | - Maria König
- UFZ – Helmholtz Centre for Environmental Research, 04318, Leipzig, Germany
| | - Martin Krauss
- UFZ – Helmholtz Centre for Environmental Research, 04318, Leipzig, Germany
| | - Jochen F. Mueller
- QAEHS – Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland, 4102, Australia
| | - Ben Tscharke
- QAEHS – Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland, 4102, Australia
| | - Beate I. Escher
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, QLD, 4222, Australia
- QAEHS – Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland, 4102, Australia
- UFZ – Helmholtz Centre for Environmental Research, 04318, Leipzig, Germany
- Eberhard Karls University Tübingen, Environmental Toxicology, Centre for Applied Geoscience, 72076, Tübingen, Germany
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81
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González A, Kroll KJ, Silva-Sanchez C, Carriquiriborde P, Fernandino JI, Denslow ND, Somoza GM. Steroid hormones and estrogenic activity in the wastewater outfall and receiving waters of the Chascomús chained shallow lakes system (Argentina). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140401. [PMID: 32653700 PMCID: PMC7492445 DOI: 10.1016/j.scitotenv.2020.140401] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/07/2020] [Accepted: 06/19/2020] [Indexed: 05/04/2023]
Abstract
Natural and synthetic steroid hormones, excreted by humans and farmed animals, have been considered as important sources of environmental endocrine disruptors. A suite of estrogens, androgens and progestogens was measured in the wastewater treatment plant outfall (WWTPO) of Chascomús city (Buenos Aires province, Argentina), and receiving waters located downstream and upstream from the WWTPO, using solid phase extraction and high-performance liquid chromatography mass spectrometry. The following natural hormones were measured: 17β-estradiol (E2), estrone (E1), estriol (E3), testosterone (T), 5α-dihydrotestosterone (DHT), progesterone (P), 17-hydroxyprogesterone (17OHP) and the synthetic estrogen 17α-ethinylestradiol (EE2). Also, in order to complement the analytical method, the estrogenic activity in these surface water samples was evaluated using the in vitro transactivation bioassay that measures the estrogen receptor (ER) activity using mammalian cells. All-natural steroid hormones measured, except 17OHP, were detected in all analyzed water samples. E3, E1, EE2 and DHT were the most abundant and frequently detected. Downstream of the WWTPO, the concentration levels of all compounds decreased reaching low levels at 4500 m from the WWTPO. Upstream, 1500 m from the WWTPO, six out of eight steroid hormones analyzed were detected: DHT, T, P, 17OHP, E3 and E2. Moreover, water samples from the WWTPO and 200 m downstream from it showed estrogenic activity exceeding that of the EC50 of the E2 standard curve. In sum, this work demonstrates the presence of sex steroid hormones and estrogenic activity, as measured by an in vitro assay, in superficial waters of the Pampas region. It also suggests the possibility of an unidentified source upstream of the wastewater outfall.
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Affiliation(s)
- Anelisa González
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Buenos Aires, Argentina
| | - Kevin J Kroll
- Department of Physiological Sciences and Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, USA
| | - Cecilia Silva-Sanchez
- Department of Physiological Sciences and Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, USA
| | - Pedro Carriquiriborde
- Centro de Investigaciones del Medioambiente (UNLP-CONICET), La Plata, Buenos Aires, Argentina
| | - Juan I Fernandino
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Buenos Aires, Argentina
| | - Nancy D Denslow
- Department of Physiological Sciences and Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, USA.
| | - Gustavo M Somoza
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Buenos Aires, Argentina.
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82
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Houtman CJ, Ten Broek R, van Oorschot Y, Kloes D, van der Oost R, Rosielle M, Lamoree MH. High resolution effect-directed analysis of steroid hormone (ant)agonists in surface and wastewater quality monitoring. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2020; 80:103460. [PMID: 32738293 DOI: 10.1016/j.etap.2020.103460] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 07/15/2020] [Accepted: 07/27/2020] [Indexed: 05/12/2023]
Abstract
Monitoring of chemical water quality is extremely challenging due to the large variety of compounds and the presence of biologically active compounds with unknown chemical identity. Previously, we developed a high resolution Effect-Directed Analysis (EDA) platform that combines liquid chromatography with high resolution mass spectrometry and parallel bioassay detection. In this study, the platform is combined with CALUX bioassays for (anti)androgenic, estrogenic and glucocorticoid activities, and the performance of the platform is evaluated. It appeared to render very repeatable results, with high recoveries of spiked compounds and high consistency between the mass spectrometric and bioassay results. Application of the platform to wastewater treatment plant effluent and surface water samples led to the identification of several compounds contributing to the measured activities. Eventually, a workflow is proposed for the application of the platform in a routine monitoring context. The workflow divides the platform into four phases, of which one to all can be performed depending on the research question and the results obtained. This allows one to make a balance between the effort put into the platform and the certainty and depth by which active compounds will be identified. The EDA platform is a valuable tool to identify unknown bioactive compounds, both in an academic setting as in the context of legislative, governmental or routine monitoring.
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Affiliation(s)
- Corine J Houtman
- The Water Laboratory, P.O. Box 734, 2003 RS Haarlem, the Netherlands.
| | - R Ten Broek
- The Water Laboratory, P.O. Box 734, 2003 RS Haarlem, the Netherlands
| | - Y van Oorschot
- The Water Laboratory, P.O. Box 734, 2003 RS Haarlem, the Netherlands
| | - D Kloes
- The Water Laboratory, P.O. Box 734, 2003 RS Haarlem, the Netherlands
| | - R van der Oost
- Department of Technology, Research and Engineering, Waternet Institute for the Urban Water Cycle, Amsterdam, The Netherlands
| | - M Rosielle
- The Water Laboratory, P.O. Box 734, 2003 RS Haarlem, the Netherlands
| | - M H Lamoree
- Department Environment & Health, Faculty of Science, Vrije Universiteit Amsterdam, the Netherlands
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83
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Tq D, L C, A I, K N, M M, Ml S. In vitro profiling of the potential endocrine disrupting activities affecting steroid and aryl hydrocarbon receptors of compounds and mixtures prevalent in human drinking water resources. CHEMOSPHERE 2020; 258:127332. [PMID: 32554009 DOI: 10.1016/j.chemosphere.2020.127332] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 06/01/2020] [Accepted: 06/03/2020] [Indexed: 06/11/2023]
Abstract
Prioritizing chemicals posing threats to drinking water resources is crucial for legislation considering the cost of water treatment, remediation, and monitoring. We profiled in vitro potential endocrine disrupting activities (both agonistic and antagonistic) of 18 contaminants most prevalent in Walloon raw water resources intended for drinking water production, including several compound groups: pesticides, perfluorinated compounds, polycyclic aromatic hydrocarbons, a corrosion inhibitor, and bisphenol A. Mixtures thereof relevant for human realistic exposure were also investigated. Seven luciferase reporter gene cell lines were used i.e. three (human and rat) responsive to dioxins through the aryl hydrocarbon receptor (AhR) and four (human) responsive to steroids through the estrogen (ER), androgen (AR), progesterone (PR), and glucocorticoid (GR) receptors. Among the 18 compounds, ten caused at least one response in at least one receptor. Specifically, chlorpyrifos, bisphenol A, fluoranthene, phenanthrene, and benzo [a]pyrene displayed significant activities on several receptors. Bisphenol A agonized ER, but abolished the cells' response to androgen and progesterone. While fluoranthene and phenanthrene strongly reduced human AhR and AR transactivation, benzo [a]pyrene strongly activated AhR and ER, but inhibited GR and AR. In human breast cancer cells, benzo [a]pyrene dramatically activated AhR, inducing a 10-fold higher response than 2,3,7,8-tetrachlorodibenzodioxin (TCDD) at concentrations possibly found realistically in human blood. The mixture of the 18 compounds exerted both ER and rat AhR agonism, with the main contribution being from benzo [a]pyrene or its combination with bisphenol A. Moreover, the mixture significantly inhibited TCDD-induced CYP1A activity (detected only by EROD assays) in human hepatoma cells.
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Affiliation(s)
- Doan Tq
- Laboratory of Food Analysis, FARAH-Veterinary Public Health, University of Liège, Liège, 4000, Belgium
| | - Connolly L
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Northern Ireland, BT9 5DL, UK
| | - Igout A
- Department of Biomedical and Preclinical Sciences, Faculty of Medicine, University of Liège, Liège, 4000, Belgium
| | - Nott K
- La Société Wallonne des Eaux (SWDE), Verviers, 4800, Belgium
| | - Muller M
- GIGA-R, Laboratory for Organogenesis and Regeneration, University of Liège, Liège, 4000, Belgium
| | - Scippo Ml
- Laboratory of Food Analysis, FARAH-Veterinary Public Health, University of Liège, Liège, 4000, Belgium.
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84
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Resilience of Micropollutant and Biological Effect Removal in an Aerated Horizontal Flow Treatment Wetland. WATER 2020. [DOI: 10.3390/w12113050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The performance of an aerated horizontal subsurface flow treatment wetland was investigated before, during and after a simulated aeration failure. Conventional wastewater parameters (e.g., carbonaceous biological oxygen demand, total nitrogen, and Escherichia coli) as well as selected micropollutants (caffeine, ibuprofen, naproxen, benzotriazole, diclofenac, acesulfame, and carbamazepine) were investigated. Furthermore, the removal of biological effects was investigated using in vitro bioassays. The six bioassays selected covered environmentally relevant endpoints (indicative of activation of aryl hydrocarbon receptor, AhR; binding to the peroxisome proliferator-activated receptor gamma, PPARγ; activation of estrogen receptor alpha, ERα; activation of glucocorticoid receptor, GR; oxidative stress response, AREc32; combined algae test, CAT). During the aeration interruption phase, the water quality deteriorated to a degree comparable to that of a conventional (non-aerated) horizontal subsurface flow wetland. After the end of the aeration interruption, the analytical and biological parameters investigated recovered at different time periods until their initial treatment performance. Treatment efficacy for conventional parameters was recovered within a few days, but no complete recovery of treatment efficacy could be observed for bioassays AhR, AREc32 and CAT in the 21 days following re-start of the aeration system. Furthermore, the removal efficacy along the flow path for most of the chemicals and bioassays recovered as it was observed in the baseline phase. Only for the activation of AhR and AREc32 there was a shift of the internal treatment profile from 12.5% to 25% (AhR) and 50% (AREc32) of the fractional length.
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85
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Lei F, Yu Y, Zhang D, Feng L, Guo J, Zhang Y, Fang F. Water remote sensing eutrophication inversion algorithm based on multilayer convolutional neural network. JOURNAL OF INTELLIGENT & FUZZY SYSTEMS 2020. [DOI: 10.3233/jifs-189017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In recent years, with the rapid development of satellite technology, remote sensing inversion has been used as an important part of environmental monitoring. Remote sensing inversion has been prepared for large-scale water environment monitoring in the watershed that is difficult for the traditional water environment monitoring methods. This paper will discuss some shortcomings of traditional remote sensing inversion methods, and proposes a remote sensing inversion method based on convolutional neural network, which realizes large-scale remote sensing smart and automatic inversion monitoring of the water environment. The results show that the method is practical and effective, and can achieve high recognition accuracy for water blooms.
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Affiliation(s)
- Feng Lei
- College of Environment and Ecology, Chongqing University, Chongqing
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Online Monitoring Center of Ecological and Environmental of the Three Gorges Project, Chongqing
| | - You Yu
- College of Environment and Ecology, Chongqing University, Chongqing
- Big Data Application Center of Ecological and Environment of Chongqing, Chongqing
| | - Daijun Zhang
- College of Environment and Ecology, Chongqing University, Chongqing
| | - Li Feng
- College of Materials Science and Engineering, Chongqing University, Chongqing, Chongqing
- Environmental Sciences Research Institute, Chongqing Collaborative Innovation Center of Big Data Application in Eco-Environmental Remote Sensing, Chongqing
| | - Jinsong Guo
- College of Environment and Ecology, Chongqing University, Chongqing
| | - Yong Zhang
- Environmental Sciences Research Institute, Chongqing Collaborative Innovation Center of Big Data Application in Eco-Environmental Remote Sensing, Chongqing
| | - Fang Fang
- College of Environment and Ecology, Chongqing University, Chongqing
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86
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Niu L, Carmona E, König M, Krauss M, Muz M, Xu C, Zou D, Escher BI. Mixture Risk Drivers in Freshwater Sediments and Their Bioavailability Determined Using Passive Equilibrium Sampling. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:13197-13206. [PMID: 32960593 DOI: 10.1021/acs.est.0c05124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The identification of mixture risk drivers is a great challenge for sediment assessment, especially when taking bioavailability into consideration. The bioavailable portion, which comprises the organic contaminants in pore water and the ones bound to organic carbon, was accessed by equilibrium partitioning to polydimethylsiloxane (PDMS). The exhaustive solvent and PDMS extracts were toxicologically characterized with a battery of in vitro reporter gene assays and chemically analyzed with liquid and gas chromatography coupled to high-resolution mass spectrometry. The bioavailable fractions of mixture effects and individual chemicals were mostly lower than 0.1, indicating that more than 90% of the substances are strongly bound and would not pose an immediate risk but could potentially be remobilized in the long term. Despite 655 organic chemicals analyzed, only 0.1-28% of the observed biological effects was explained by the detected compounds in whole sediments, while 0.009-3.3% was explained by bioavailable chemicals. The mixture effects were not only dominated by legacy pollutants (e.g., polycyclic aromatic hydrocarbons (PAHs) in the bioassay for activation of the aryl-hydrocarbon receptor (AhR) and oxidative stress response (AREc32)) but also by present-use chemicals (e.g., plastic additives for binding to the peroxisome proliferator-activated receptor γ (PPARγ)), with different fingerprints between whole sediments and bioavailable extracts. Our results highlight the necessity to involve different bioassays with diverse effect profiles and broader selection of contaminants along with bioavailability for the risk assessment of chemical mixtures in sediments.
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Affiliation(s)
- Lili Niu
- Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Eric Carmona
- Department of Effect Directed Analysis, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Maria König
- Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Martin Krauss
- Department of Effect Directed Analysis, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Melis Muz
- Department of Effect Directed Analysis, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Chao Xu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Deliang Zou
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Beate I Escher
- Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Schnarrenbergstr. 94-96, Tübingen 72076, Germany
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87
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De Baat ML, Van der Oost R, Van der Lee GH, Wieringa N, Hamers T, Verdonschot PFM, De Voogt P, Kraak MHS. Advancements in effect-based surface water quality assessment. WATER RESEARCH 2020; 183:116017. [PMID: 32673894 DOI: 10.1016/j.watres.2020.116017] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/15/2020] [Accepted: 06/03/2020] [Indexed: 06/11/2023]
Abstract
Legally-prescribed chemical monitoring is unfit for determining the pollution status of surface waters, and there is a need for improved assessment methods that consider the aggregated risk of all bioavailable micropollutants present in the aquatic environment. Therefore, the present study aimed to advance effect-based water quality assessment by implementing methodological improvements and to gain insight into contamination source-specific bioanalytical responses. Passive sampling of non-polar and polar organic compounds and metals was applied at 14 surface water locations that were characterized by two major anthropogenic contamination sources, agriculture and wastewater treatment plant (WWTP) effluent, as well as reference locations with a low expected impact from micropollutants. Departing from the experience gained in previous studies, a battery of 20 in vivo and in vitro bioassays was composed and subsequently exposed to the passive sampler extracts. Next, the bioanalytical responses were divided by their respective effect-based trigger values to obtain effect-based risk quotients, which were summed per location. These cumulative ecotoxicological risks were lowest for reference locations (4.3-10.9), followed by agriculture locations (11.3-27.2) and the highest for WWTP locations (12.8-47.7), and were mainly driven by polar organic contaminants. The bioanalytical assessment of the joint risks of metals and (non-)polar organic compounds resulted in the successful identification of pollution source-specific ecotoxicological risk profiles: none of the bioassays were significantly associated with reference locations nor with multiple location types, while horticulture locations were significantly characterized by anti-AR and anti-PR activity and cytotoxicity, and WWTP sites by ERα activity and toxicity in the in vivo bioassays. It is concluded that the presently employed advanced effect-based methods can readily be applied in surface water quality assessment and that the integration of chemical- and effect-based monitoring approaches will foster future-proof water quality assessment strategies on the road to a non-toxic environment.
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Affiliation(s)
- M L De Baat
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, the Netherlands.
| | - R Van der Oost
- Department of Technology, Research and Engineering, Waternet Institute for the Urban Water Cycle, Amsterdam, the Netherlands
| | - G H Van der Lee
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, the Netherlands
| | - N Wieringa
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, the Netherlands
| | - T Hamers
- Department of Environment & Health, Vrije Universiteit Amsterdam, the Netherlands
| | - P F M Verdonschot
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, the Netherlands; Wageningen Environmental Research, Wageningen, UR, the Netherlands
| | - P De Voogt
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, the Netherlands
| | - M H S Kraak
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, the Netherlands
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88
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IL4I1 Is a Metabolic Immune Checkpoint that Activates the AHR and Promotes Tumor Progression. Cell 2020; 182:1252-1270.e34. [PMID: 32818467 DOI: 10.1016/j.cell.2020.07.038] [Citation(s) in RCA: 267] [Impact Index Per Article: 66.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 05/25/2020] [Accepted: 07/28/2020] [Indexed: 01/01/2023]
Abstract
Aryl hydrocarbon receptor (AHR) activation by tryptophan (Trp) catabolites enhances tumor malignancy and suppresses anti-tumor immunity. The context specificity of AHR target genes has so far impeded systematic investigation of AHR activity and its upstream enzymes across human cancers. A pan-tissue AHR signature, derived by natural language processing, revealed that across 32 tumor entities, interleukin-4-induced-1 (IL4I1) associates more frequently with AHR activity than IDO1 or TDO2, hitherto recognized as the main Trp-catabolic enzymes. IL4I1 activates the AHR through the generation of indole metabolites and kynurenic acid. It associates with reduced survival in glioma patients, promotes cancer cell motility, and suppresses adaptive immunity, thereby enhancing the progression of chronic lymphocytic leukemia (CLL) in mice. Immune checkpoint blockade (ICB) induces IDO1 and IL4I1. As IDO1 inhibitors do not block IL4I1, IL4I1 may explain the failure of clinical studies combining ICB with IDO1 inhibition. Taken together, IL4I1 blockade opens new avenues for cancer therapy.
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89
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Serra H, Brion F, Chardon C, Budzinski H, Schulze T, Brack W, Aït-Aïssa S. Estrogenic activity of surface waters using zebrafish- and human-based in vitro assays: The Danube as a case-study. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2020; 78:103401. [PMID: 32417722 DOI: 10.1016/j.etap.2020.103401] [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: 01/09/2020] [Revised: 04/18/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Most in vitro reporter gene assays used to assess estrogenic contamination are based on human estrogen receptor α (hERα) activation. However, fish bioassays can have distinct response to estrogenic chemicals and mixtures, questioning the relevance of human-based bioassays for assessing risk to this species. In this study, zebrafish liver cells stably expressing zebrafish ERβ2 (ZELHβ2) and human breast cancer cells expressing hERα (MELN) were used to quantify the estrogenic activity of 25 surface water samples of the Danube River, for which chemicals have been previously quantified. Most samples had a low estrogenic activity below 0.1 ng/L 17β-estradiol-equivalents that was more often detected by MELN cells, while ZELHβ2 response tend to be lower than predicted based on the chemicals identified. Nevertheless, both bioassays quantified well a higher estrogenic activity at two sites, which was confirmed in vivo using a transgenic zebrafish assay. The results are discussed considering the effect-based trigger values proposed for water quality monitoring.
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Affiliation(s)
- Hélène Serra
- Unité Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, Institut National de l'Environnement Industriel et des Risques (INERIS), Verneuil-en-Halatte, France; UMR-CNRS EPOC/LPTC, Université de Bordeaux, Talence, France
| | - François Brion
- Unité Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, Institut National de l'Environnement Industriel et des Risques (INERIS), Verneuil-en-Halatte, France
| | - Clémence Chardon
- Unité Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, Institut National de l'Environnement Industriel et des Risques (INERIS), Verneuil-en-Halatte, France
| | | | - Tobias Schulze
- UFZ, Helmholtz Centre for Environmental Research, Leipzig, Germany
| | - Werner Brack
- UFZ, Helmholtz Centre for Environmental Research, Leipzig, Germany; RWTH Aachen University, Aachen, Germany
| | - Selim Aït-Aïssa
- Unité Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, Institut National de l'Environnement Industriel et des Risques (INERIS), Verneuil-en-Halatte, France.
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90
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Kimura Y, Fujimura C, Imagawa T, Lupisan SP, Saito-Obata M, Saito M, Oshitani H, Aiba S. Development of a novel in vitro assay to evaluate environmental water using an IL-8 reporter cell line. EXCLI JOURNAL 2020; 19:1054-1063. [PMID: 33013263 PMCID: PMC7527499 DOI: 10.17179/excli2020-2104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 06/23/2020] [Indexed: 11/10/2022]
Abstract
The IL-8 luciferase reporter cell line, THP-G8 cells, used in the in vitro sensitization test, OECD442E, can respond to a variety of stimuli other than haptens, such as lipopolysaccharide (LPS), other bacterial toxins, and detergents. Considering these characteristics, we examined the ability of the IL-8 luciferase assay using THP-G8 cells to evaluate water pollution. We first stimulated THP-G8 cell with various Toll-like receptor (TLR) agonists and nucleotide-binding oligomerization domain-like receptor (NLR) agonists, and found that TLR1, 2, 4, 5, 6 agonists and NOD 1, 2 agonists significantly augmented IL-8 luciferase activity (IL8LA). Then, we examined the detection threshold of LPS by THP-G8 cells, and found it 0.4 EU/ml. Next, we examined whether THP-G8 cells can differently respond to a variety of sources of environmental water around Sendai, Japan and Manila, Philippine and whether there is a correlation between the IL8LA of different sources of water and their level of endotoxin assessed by the LAL assay. There was a clear trend that the IL8LA was lower in the upper stream and higher in the downstream in both Japan and Philippine. Moreover, there was a strong correlation between the IL8LA of the environmental water and its endotoxin level. Finally, using N-acetyl-L-cysteine, an antioxidant/radical scavenger, and polymyxin B that neutralizes endotoxin, we demonstrated that there was a difference in the suppressive effects by them between the water from Japan and that from Philippine. These data suggest the potential of the IL-8 luciferase assay for evaluating environmental water pollution both quantitatively and qualitatively.
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Affiliation(s)
- Yutaka Kimura
- Department of Dermatology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Chizu Fujimura
- Department of Dermatology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Toshifumi Imagawa
- Department of Virology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Socorro P Lupisan
- Research Institute for Tropical Medicine, FCC, Alabang, Muntinlupa 1781, Philippines
| | - Mariko Saito-Obata
- Department of Virology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Mayuko Saito
- Department of Virology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Hitoshi Oshitani
- Department of Virology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Setsuya Aiba
- Department of Dermatology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8574, Japan
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91
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Neale PA, Braun G, Brack W, Carmona E, Gunold R, König M, Krauss M, Liebmann L, Liess M, Link M, Schäfer RB, Schlichting R, Schreiner VC, Schulze T, Vormeier P, Weisner O, Escher BI. Assessing the Mixture Effects in In Vitro Bioassays of Chemicals Occurring in Small Agricultural Streams during Rain Events. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:8280-8290. [PMID: 32501680 DOI: 10.1021/acs.est.0c02235] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Rain events may impact the chemical pollution burden in rivers. Forty-four small streams in Germany were profiled during several rain events for the presence of 395 chemicals and five types of mixture effects in in vitro bioassays (cytotoxicity; activation of the estrogen, aryl hydrocarbon, and peroxisome proliferator-activated receptors; and oxidative stress response). While these streams were selected to cover a wide range of agricultural impacts, in addition to the expected pesticides, wastewater-derived chemicals and chemicals typical for street runoff were detected. The unexpectedly high estrogenic effects in many samples indicated the impact by wastewater or overflow of combined sewer systems. The 128 water samples exhibited a high diversity of chemical and effect patterns, even for different rain events at the same site. The detected 290 chemicals explained only a small fraction (<8%) of the measured effects. The experimental effects of the designed mixtures of detected chemicals that were expected to dominate the mixture effects of detected chemicals were consistent with predictions for concentration addition within a factor of two for 94% of the mixtures. Overall, the burden of chemicals and effects was much higher than that previously detected in surface water during dry weather, with the effects often exceeding proposed effect-based trigger values.
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Affiliation(s)
- Peta A Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, Queensland 4222, Australia
| | - Georg Braun
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Werner Brack
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Eric Carmona
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Roman Gunold
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Maria König
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Martin Krauss
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Liana Liebmann
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Matthias Liess
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, Aachen 52074, Germany
| | - Moritz Link
- University of Koblenz-Landau, iES - Institute for Environmental Sciences, Mainz 76829, Landau Germany
| | - Ralf B Schäfer
- University of Koblenz-Landau, iES - Institute for Environmental Sciences, Mainz 76829, Landau Germany
| | - Rita Schlichting
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Verena C Schreiner
- University of Koblenz-Landau, iES - Institute for Environmental Sciences, Mainz 76829, Landau Germany
| | - Tobias Schulze
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Philipp Vormeier
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Oliver Weisner
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
| | - Beate I Escher
- UFZ-Helmholtz Centre for Environmental Research, Leipzig 04318, Germany
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92
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Escher BI, Henneberger L, König M, Schlichting R, Fischer FC. Cytotoxicity Burst? Differentiating Specific from Nonspecific Effects in Tox21 in Vitro Reporter Gene Assays. ENVIRONMENTAL HEALTH PERSPECTIVES 2020; 128:77007. [PMID: 32700975 PMCID: PMC7377237 DOI: 10.1289/ehp6664] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 06/16/2020] [Accepted: 07/02/2020] [Indexed: 05/03/2023]
Abstract
BACKGROUND High-throughput screening of chemicals with in vitro reporter gene assays in Tox21 has produced a large database on cytotoxicity and specific modes of action. However, the validity of some of the reported activities is questionable due to the "cytotoxicity burst," which refers to the supposition that many stress responses are activated in a nonspecific way at concentrations close to cell death. OBJECTIVES We propose a pragmatic method to identify whether reporter gene activation is specific or cytotoxicity-triggered by comparing the measured effects with baseline toxicity. METHODS Baseline toxicity, also termed narcosis, is the minimal toxicity any chemical causes. Quantitative structure-activity relationships (QSARs) developed for baseline toxicity in mammalian reporter gene cell lines served as anchors to define the chemical-specific threshold for the cytotoxicity burst and to evaluate the degree of specificity of the reporter gene activation. Measured 10% effect concentrations were related to measured or QSAR-predicted 10% cytotoxicity concentrations yielding specificity ratios (SR). We applied this approach to our own experimental data and to ∼ 8,000 chemicals that were tested in six of the high-throughput Tox21 reporter gene assays. RESULTS Confirmed baseline toxicants activated reporter gene activity around cytotoxic concentrations triggered by the cytotoxicity burst. In six Tox21 assays, 37%-87% of the active hits were presumably caused by the cytotoxicity burst (SR < 1 ) and only 2%-14% were specific with SR ≥ 10 against experimental cytotoxicity but 75%-97% were specific against baseline toxicity. This difference was caused by a large fraction of chemicals showing excess cytotoxicity. CONCLUSIONS The specificity analysis for measured in vitro effects identified whether a cytotoxicity burst had likely occurred. The SR-analysis not only prevented false positives, but it may also serve as measure for relative effect potency and can be used for quantitative in vitro-in vivo extrapolation and risk assessment of chemicals. https://doi.org/10.1289/EHP6664.
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Affiliation(s)
- Beate I. Escher
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany
- Environmental Toxicology, Center for Applied Geoscience, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Luise Henneberger
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany
| | - Maria König
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany
| | - Rita Schlichting
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany
| | - Fabian C. Fischer
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany
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93
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Müller ME, Werneburg M, Glaser C, Schwientek M, Zarfl C, Escher BI, Zwiener C. Influence of Emission Sources and Tributaries on the Spatial and Temporal Patterns of Micropollutant Mixtures and Associated Effects in a Small River. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:1382-1391. [PMID: 32347587 DOI: 10.1002/etc.4726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 02/28/2020] [Accepted: 04/13/2020] [Indexed: 05/08/2023]
Abstract
Organic micropollutants of anthropogenic origin in river waters may impair aquatic ecosystem health and drinking water quality. To evaluate micropollutant fate and turnover on a catchment scale, information on input source characteristics as well as spatial and temporal variability is required. The influence of tributaries from agricultural and urban areas and the input of wastewater were investigated by grab and Lagrangian sampling under base flow conditions within a 7.7-km-long stretch of the Ammer River (southwest Germany) using target screening for 83 organic micropollutants and 4 in vitro bioassays with environmentally relevant modes of action. In total, 9 pesticides and transformation products, 13 pharmaceuticals, and 6 industrial and household chemicals were detected. Further, aryl hydrocarbon receptor induction, peroxisome proliferator-activated receptor activity, estrogenicity, and oxidative stress response were measured in the river. The vast majority of the compounds and mixture effects were introduced by the effluent of a wastewater-treatment plant, which contributed 50% of the total flow rate of the river on the sampling day. The tributaries contributed little to the overall load of organic micropollutants and mixture effects because of their relatively low discharge but showed a different chemical and toxicological pattern from the Ammer River, though a comparison to effect-based trigger values pointed toward unacceptable surface water quality in the main stem and in some of the tributaries. Chemical analysis and in vitro bioassays covered different windows of analyte properties but reflected the same picture. Environ Toxicol Chem 2020;39:1382-1391. © 2020 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Maximilian E Müller
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Martina Werneburg
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Clarissa Glaser
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Marc Schwientek
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Christiane Zarfl
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Beate I Escher
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
- UFZ-Helmholtz Centre for Environmental Research, Leipzig, Germany
| | - Christian Zwiener
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
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94
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Xia P, Crump D, Chiu S, Chan HM, O'Brien JM. Toxicogenomic Assessment of Complex Chemical Signatures in Double-Crested Cormorant Embryos from Variably Contaminated Great Lakes Sites. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:7504-7512. [PMID: 32459094 DOI: 10.1021/acs.est.0c02725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Using omics approaches to monitor complex environmental mixtures is challenging. Previously, we evaluated in vitro transcriptomic effects of complex organic extracts derived from avian eggs. However, there is a lack of studies using wild species that are naturally exposed to contaminant mixtures. Here, we examined polychlorinated biphenyl (PCB) and polybrominated diphenyl ether (PBDE) residues and gene expression in embryonic liver tissue of double-crested cormorants (Phalacrocorax auritus) collected from six variably contaminated colonies. Colonies near industrialized areas were distinguished from less contaminated sites based on their PCB and PBDE concentrations. The most variably expressed genes between sites were involved in pathways including, xenobiotic metabolism (e.g., Cyp1a4), lipid/bile acid homeostasis (e.g., Lbfabp), and oxidative stress (e.g., Mt4). Hierarchical clustering, based on relative gene expression, revealed a grouping pattern similar to chemical residue concentrations. Further, partial least squares regression analysis was used to estimate chemical concentrations from transcriptomics data. PCB 155 and BDE 47 showed the highest slopes (0.77 and 0.69, respectively) fitted by linear regression of measured and estimated chemical concentrations. The application of transcriptomics to a wild avian species, naturally exposed to complex chemical mixtures and other stressors, represents a promising means to distinguish and prioritize variably contaminated sites.
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Affiliation(s)
- Pu Xia
- National Wildlife Research Centre, Environment and Climate Change Canada, Ottawa K1A 0H3, Ontario, Canada
- Department of Biology, University of Ottawa, Ottawa K1N 6N5, Ontario, Canada
| | - Doug Crump
- National Wildlife Research Centre, Environment and Climate Change Canada, Ottawa K1A 0H3, Ontario, Canada
| | - Suzanne Chiu
- National Wildlife Research Centre, Environment and Climate Change Canada, Ottawa K1A 0H3, Ontario, Canada
| | - Hing Man Chan
- Department of Biology, University of Ottawa, Ottawa K1N 6N5, Ontario, Canada
| | - Jason M O'Brien
- National Wildlife Research Centre, Environment and Climate Change Canada, Ottawa K1A 0H3, Ontario, Canada
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95
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Fang W, Peng Y, Yan L, Xia P, Zhang X. A Tiered Approach for Screening and Assessment of Environmental Mixtures by Omics and In Vitro Assays. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:7430-7439. [PMID: 32401503 DOI: 10.1021/acs.est.0c00662] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
New methodology approaches with a broad coverage of the biological effects are urgently needed to evaluate the safety of the universe of environmentally relevant chemicals. Here, we propose a tiered approach incorporating transcriptomics and in vitro bioassays to assess environmental mixtures. The mixture samples and the perturbed biological pathways are prioritized by concentration-dependent transcriptome (CDT) and then used to guide the selection of in vitro bioassays for toxicant identification. To evaluate omics' screening capability, we first applied a CDT technique to test mixture samples by HepG2 and MCF7 cells. The effect recoveries of large-volume solid-phase extraction on the overall bioactivity of the mixture were 48.9% in HepG2 and 58.3% in MCF7. The overall bioactivity potencies obtained by transcriptomics were positively correlated with the panel of 8 bioassays among 14 mixture samples combined with the previous data. Transcriptomics could predict their activation status (AUC = 0.783) and the relative potency (p < 0.05) of bioassays for four of the eight receptors (AhR, ER, AR, and Nrf2). Furthermore, the CDT identified other biological pathways perturbated by mixture samples, such as the pathway related to TP53, CAR, FXR, HIF, THRA, etc. Overall, this study demonstrates the potential of concentration-dependent omics for effect-based water quality assessment.
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Affiliation(s)
- Wendi Fang
- State Key Laboratory of Pollution Control & Resource Reuse, School of the Environment, Nanjing University, Nanjing, P. R. China, 210023
| | - Ying Peng
- State Key Laboratory of Pollution Control & Resource Reuse, School of the Environment, Nanjing University, Nanjing, P. R. China, 210023
| | - Lu Yan
- State Key Laboratory of Pollution Control & Resource Reuse, School of the Environment, Nanjing University, Nanjing, P. R. China, 210023
| | - Pu Xia
- State Key Laboratory of Pollution Control & Resource Reuse, School of the Environment, Nanjing University, Nanjing, P. R. China, 210023
| | - Xiaowei Zhang
- State Key Laboratory of Pollution Control & Resource Reuse, School of the Environment, Nanjing University, Nanjing, P. R. China, 210023
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96
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Identification of acetylcholinesterase inhibitors in water by combining two-dimensional thin-layer chromatography and high-resolution mass spectrometry. J Chromatogr A 2020; 1624:461239. [PMID: 32540077 DOI: 10.1016/j.chroma.2020.461239] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 11/22/2022]
Abstract
Effect-directed analysis (EDA) is increasingly used in environmental monitoring to detect and identify key toxicants. High-performance thin-layer chromatography (HPTLC) has proven to be a very suitable fractionation technique for this purpose. However, HPTLC is limited in its separation efficiency. Thus, separated fractions could still contain many different components and identification of the effective substances remains difficult. Therefore, in this study a workflow for selective EDA with two-dimensional HPTLC in combination with high-performance liquid chromatography-high-resolution mass spectrometry (HPLC-HRMS) was developed. The aim of the workflow was the stepwise reduction of the sample complexity in order to reduce the number of signals that could be responsible for the measured effects. As a consequence, the identification of effective substances should be facilitated. The acetylcholinesterase inhibition assay (AChE assay) for the detection of potential neurotoxic compounds was applied for biotesting. The transfer of effective zones from the first to the second dimension and also to the mass spectrometric measurement was enabled by extraction. A proof of concept was performed by spiking six acetylcholinesterase inhibiting substances into three different water matrices that were investigated with the developed workflow. The successful prioritization of all spiked compounds confirmed the efficiency of the workflow, regardless of the sample matrix. Biotesting of different water samples resulted in numerous potentially neurotoxic effects, which overlapped strongly in the first separation dimension. The higher peak capacity reached by two-dimensional HPTLC, on the other hand, resulted in discrete effective zones and enabled the identification of several compounds. For the substances lumichrome, a derivate of riboflavin and paraxanthine as well as for linear alkylbenzene sulfonates that were applied as anionic surfactants in detergents, the inhibiting effect to the AChE could be confirmed.
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97
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Lungu-Mitea S, Lundqvist J. Potentials and pitfalls of transient in vitro reporter bioassays: interference by vector geometry and cytotoxicity in recombinant zebrafish cell lines. Arch Toxicol 2020; 94:2769-2784. [PMID: 32447522 PMCID: PMC7395025 DOI: 10.1007/s00204-020-02783-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/07/2020] [Indexed: 12/03/2022]
Abstract
The water framework directive re-evaluation proposes the integration of effect-based tools, increasing the need for alternative methods. Especially within aquatic toxicology, coverage of specific toxicity pathways is scarce, and most applications are based on mammalian or bacterial models, not reflecting realistic exposure scenarios. The use of transient reporter gene assays in cells from organisms of interest could be a quick and inexpensive solution. However, interference with cellular homeostasis may impact the system beyond the function of the manipulated gene and thus lead to non-specific results. We describe how varying vector geometry and different regulatory gene elements on plasmids used for transfection in zebrafish hepatocytes and embryonic fibroblasts may lead up to a tenfold difference in potency. Cells were transiently co-transfected with an Nrf2-responsive Firefly luciferase reporter plasmid and eight different Renilla luciferase normalization plasmids. Transfected cells were exposed to two different regimes (0.1–100 µM and 7.8–250 µM) of the oxidative stress-inducing compounds, sulforaphane, tertbutylhydroquinone, and metazachlor. Nrf2 activity was measured in dual-luciferase assays. In parallel, cytotoxicity was assessed for different endpoints (energy metabolism, protein amount, membrane stability, and cell proliferation) in non-transfected cells and cells co-transfected with constructs of increasing size, to be used for normalization. Transfected cells were more susceptible to cytotoxicity in a vector size-dependent manner. Conclusively, we report that vector geometries (size, backbones, gene-regulatory units), cell line (tissue origin), applied transfection methods, and signal normalization may alter the sensitivity of reporter bioassays in a synergistic manner. Further, we propose that thorough bioassay design is needed to ensure reliability and regulatory acceptance.
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Affiliation(s)
- Sebastian Lungu-Mitea
- Department of Biomedicine and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7028, SE-750 07, Uppsala, Sweden.
| | - Johan Lundqvist
- Department of Biomedicine and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7028, SE-750 07, Uppsala, Sweden
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98
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Cheng F, Li H, Ma H, Wu F, Fu Z, You J. Identifying bioaccessible suspect toxicants in sediment using adverse outcome pathway directed analysis. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:121853. [PMID: 31874758 DOI: 10.1016/j.jhazmat.2019.121853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/30/2019] [Accepted: 12/08/2019] [Indexed: 06/10/2023]
Abstract
Chemical mixtures are a common occurrence in contaminated sediment and determining causal relationship between sediment contamination and adverse outcomes is challenging. The bioavailability and choice of bioassay endpoints played important roles in elucidating causality. As such, bioaccessibility-based XAD extraction and adverse outcome pathway (AOP) guided bioassays were incorporated into an effect-directed analysis to more effectively determine sediment causality. XAD extracts of sediments from urban waterways in Guangzhou, China were examined using cell viability bioassays with four human tumor cells from lung, liver, breast, and bone marrow. Pronounced effects to SH-SY5Y cells were noted, thus neurotoxicity was subsequently focused in the AOP-guided bioassays. Intracellular calcium influx, mitochondrial membrane potential inhibition, reactive oxygen species generation, and cell viability were utilized as evidence for neurotoxicity AOP-guided analysis. Suspect toxicants were identified in active fractions using GC-MS. Toxicity confirmation was performed by evaluating toxicity contributions of the candidates to the pathway. Cypermethrin, bisphenol A, galaxolide, tonalide, and versalide were found as the major stressors across key events of the studied pathway. Moreover, good correlations among key events validated the feasibility of method to predict in vivo response, suggesting that considering bioavailability and AOP improved environmental relevance for toxicant identification in a complex mixture.
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Affiliation(s)
- Fei Cheng
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 511443, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Huizhen Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 511443, China
| | - Huimin Ma
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Fengchang Wu
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Zhiyou Fu
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Jing You
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 511443, China.
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99
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Huchthausen J, Mühlenbrink M, König M, Escher BI, Henneberger L. Experimental Exposure Assessment of Ionizable Organic Chemicals in In Vitro Cell-Based Bioassays. Chem Res Toxicol 2020; 33:1845-1854. [DOI: 10.1021/acs.chemrestox.0c00067] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Julia Huchthausen
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Marie Mühlenbrink
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Maria König
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Beate I. Escher
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
- Environmental Toxicology, Center for Applied Geoscience, Eberhard Karls University Tübingen, 72074 Tübingen, Germany
| | - Luise Henneberger
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
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100
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Reiter EB, Jahnke A, König M, Siebert U, Escher BI. Influence of Co-Dosed Lipids from Biota Extracts on the Availability of Chemicals in In Vitro Cell-Based Bioassays. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:4240-4247. [PMID: 32118404 PMCID: PMC7144218 DOI: 10.1021/acs.est.9b07850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/27/2020] [Accepted: 03/01/2020] [Indexed: 05/21/2023]
Abstract
Extraction of chemicals from biota leads to co-extraction of lipids. When dosing such extracts into in vitro bioassays, co-dosed lipids act as an additional phase that can reduce the bioavailability of the chemicals and the apparent sensitivity of the assay. Equilibrium partitioning between medium, cells, and co-dosed lipids was described with an existing equilibrium partitioning model for cell-based bioassays extended by an additional lipid phase. We experimentally investigated the influence of co-dosed lipids on the effects elicited by four test chemicals of different hydrophobicity in two bioassays, indicative of the aryl hydrocarbon receptor and oxidative stress response (AREc32). The partitioning model explained the effect of the test chemicals in the presence of spiked triolein within a factor of 0.33-5.83 between the measured and predicted effect concentration (EC). We applied the model to marine mammal blubber extracted with silicone. Extracts dosed in the AREc32 bioassay showed a linear increase of apparent EC with increasing lipid fraction. The partitioning model was used to interpret the role of the co-extracted lipid. A quantitative lipid correction of bioassay results in the presence of co-dosed lipids was possible for known compounds and defined mixtures, while we could only estimate a range for mixtures of unknown chemicals.
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Affiliation(s)
- Eva B. Reiter
- Department
Cell Toxicology, Helmholtz Centre for Environmental
Research—UFZ, Permoserstraße 15, 04318 Leipzig, Germany
- E-mail: . Phone: +49 341 235 1823. Fax: +49 341 235 1787
| | - Annika Jahnke
- Department
Cell Toxicology, Helmholtz Centre for Environmental
Research—UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Maria König
- Department
Cell Toxicology, Helmholtz Centre for Environmental
Research—UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Ursula Siebert
- Institute
for Terrestrial and Aquatic Wildlife Research, University of Veterinary Medicine Hannover, Foundation, Werftstr. 6, 25761 Büsum, Germany
| | - Beate I. Escher
- Department
Cell Toxicology, Helmholtz Centre for Environmental
Research—UFZ, Permoserstraße 15, 04318 Leipzig, Germany
- Environmental
Toxicology, Center for Applied Geoscience, Eberhard Karls University Tübingen, Hölderlinstr. 12, 72074 Tübingen, Germany
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