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Itzel F, Baetz N, Hohrenk LL, Gehrmann L, Antakyali D, Schmidt TC, Tuerk J. Evaluation of a biological post-treatment after full-scale ozonation at a municipal wastewater treatment plant. WATER RESEARCH 2020; 170:115316. [PMID: 31785561 DOI: 10.1016/j.watres.2019.115316] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
To reduce the discharge of trace organic compounds into water bodies associated with potential toxic effects such as endocrine disruption, new advanced treatment methods are being investigated at several wastewater treatment plants (WWTPs). One of the most studied and already implemented technologies is ozonation. However, ozonation only partially oxidizes trace organic compounds (TrOC) and as a result, transformation products (TPs) with unknown properties can be formed. In order to minimise the risk of releasing unknown and potentially toxic TPs into surface water, it is recommended to install a biological post-treatment after ozonation. The aim of this study was to evaluate the efficiency of a moving bed reactor following ozonation in a full-scale plant. Different ozone dosages (zspec. = 0.3, 0.5, 0.7 mg O3/mgDOC) were investigated. To assess the biological activity of the post-treatment, the assimilable organic carbon (AOC) was determined in addition to the formed biomass. Furthermore, selected TrOC were analysed in parallel to monitor the ozonation efficiency at different ozone doses. In addition, estrogenic, androgenic as well as corresponding antagonistic effects were investigated after each treatment step using the A-YES and A-YAS assay. A non-target screening was performed to evaluate a trend analysis of formed TPs as well as their removal by the post-treatment procedure. The results proved the successful design of the biological post-treatment reactor by a constant biofilm development and reduction of the AOC. Endocrine effects were removed below the limit of detection (LOD) of 10 pg EEQ/L already after ozonation for all applied ozone doses. Antagonistic effects were not significantly reduced during ozonation and subsequent biological post-treatment. For this reason, further research is needed to evaluate different post-treatment technologies. The trend analysis from non-target screening data showed a reduction of about 95% of the number of formed TPs by the biological post-treatment. Consequently, an assessment of the biological activity and the elimination capacity of a certain biological post-treatment technique is thus possible by applying the AOC in combination with a non-target screening.
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Affiliation(s)
- Fabian Itzel
- Institut für Energie- und Umwelttechnik e. V. (IUTA, Institute of Energy and Environmental Technology), Bliersheimer Str. 58-60, 47229, Duisburg, Germany; Instrumental Analytical Chemistry (IAC), Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany; Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany
| | - Nicolai Baetz
- Institut für Energie- und Umwelttechnik e. V. (IUTA, Institute of Energy and Environmental Technology), Bliersheimer Str. 58-60, 47229, Duisburg, Germany; Instrumental Analytical Chemistry (IAC), Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany; Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany
| | - Lotta L Hohrenk
- Instrumental Analytical Chemistry (IAC), Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany; Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany
| | - Linda Gehrmann
- Institut für Energie- und Umwelttechnik e. V. (IUTA, Institute of Energy and Environmental Technology), Bliersheimer Str. 58-60, 47229, Duisburg, Germany
| | | | - Torsten C Schmidt
- Instrumental Analytical Chemistry (IAC), Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany; Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany; IWW Zentrum Wasser, Moritzstr. 26, 45476, Mülheim an der Ruhr, Germany
| | - Jochen Tuerk
- Institut für Energie- und Umwelttechnik e. V. (IUTA, Institute of Energy and Environmental Technology), Bliersheimer Str. 58-60, 47229, Duisburg, Germany; Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany.
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102
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Leppert B, Strunz S, Seiwert B, Schlittenbauer L, Schlichting R, Pfeiffer C, Röder S, Bauer M, Borte M, Stangl GI, Schöneberg T, Schulz A, Karkossa I, Rolle-Kampczyk UE, Thürmann L, von Bergen M, Escher BI, Junge KM, Reemtsma T, Lehmann I, Polte T. Maternal paraben exposure triggers childhood overweight development. Nat Commun 2020; 11:561. [PMID: 32047148 PMCID: PMC7012887 DOI: 10.1038/s41467-019-14202-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 12/17/2019] [Indexed: 01/09/2023] Open
Abstract
Parabens are preservatives widely used in consumer products including cosmetics and food. Whether low-dose paraben exposure may cause adverse health effects has been discussed controversially in recent years. Here we investigate the effect of prenatal paraben exposure on childhood overweight by combining epidemiological data from a mother–child cohort with experimental approaches. Mothers reporting the use of paraben-containing cosmetic products have elevated urinary paraben concentrations. For butyl paraben (BuP) a positive association is observed to overweight within the first eight years of life with a stronger trend in girls. Consistently, maternal BuP exposure of mice induces a higher food intake and weight gain in female offspring. The effect is accompanied by an epigenetic modification in the neuronal Pro-opiomelanocortin (POMC) enhancer 1 leading to a reduced hypothalamic POMC expression. Here we report that maternal paraben exposure may contribute to childhood overweight development by altered POMC-mediated neuronal appetite regulation. Parabens are preservatives widely used in consumer products including cosmetics and food. Here the authors demonstrate that maternal paraben exposure may contribute to childhood overweight development by an altered neuronal appetite regulation.
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Affiliation(s)
- Beate Leppert
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Sandra Strunz
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany.,Department of Dermatology Venerology and Allergology, Leipzig University Medical Center, Leipzig, Germany
| | - Bettina Seiwert
- Department for Analytical Chemistry, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Linda Schlittenbauer
- Department for Analytical Chemistry, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Rita Schlichting
- Department for Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Christiane Pfeiffer
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Stefan Röder
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Mario Bauer
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Michael Borte
- Children's Hospital, Municipal Hospital St. Georg, Leipzig, Germany
| | - Gabriele I Stangl
- Institute of Agriculture and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena, Leipzig, Germany
| | - Torsten Schöneberg
- Medical Faculty, Rudolf Schönheimer Institute of Biochemistry, University of Leipzig, Leipzig, Germany
| | - Angela Schulz
- Medical Faculty, Rudolf Schönheimer Institute of Biochemistry, University of Leipzig, Leipzig, Germany
| | - Isabell Karkossa
- Department Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Ulrike E Rolle-Kampczyk
- Department Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Loreen Thürmann
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany.,Environmental Epigenetics and Lung Research Group, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Molecular Epidemiology, Berlin Institute of Health (BIH), Berlin, Germany
| | - Martin von Bergen
- Department Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany.,Faculty of Life Sciences, Institute of Biochemistry, University of Leipzig, Leipzig, Germany
| | - Beate I Escher
- Department for Cell Toxicology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Kristin M Junge
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Thorsten Reemtsma
- Department for Analytical Chemistry, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Irina Lehmann
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany. .,Environmental Epigenetics and Lung Research Group, Charité-Universitätsmedizin Berlin, Berlin, Germany. .,Molecular Epidemiology, Berlin Institute of Health (BIH), Berlin, Germany.
| | - Tobias Polte
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany. .,Department of Dermatology Venerology and Allergology, Leipzig University Medical Center, Leipzig, Germany.
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103
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Hara-Yamamura H, Fukushima T, Tan LC, Okabe S. Transcriptomic analysis of HepG2 cells exposed to fractionated wastewater effluents suggested humic substances as potential inducer of whole effluent toxicity. CHEMOSPHERE 2020; 240:124894. [PMID: 31726595 DOI: 10.1016/j.chemosphere.2019.124894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/22/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
We performed a transcriptome-based bioassay (TSB assay) using human hepatoma HepG2 cells to evaluate the potential toxicity of whole wastewater effluents from two membrane bioreactors (MBRs) and a conventional activated sludge process (AS). The biologically active agent(s) in the wastewater effluents were characterized based on expression of the marker genes (i.e., CYP1A1, AKR1B10, GCLM and GPX2) selected by DNA microarray analysis, after the wastewater effluent samples were concentrated by a reverse osmosis (RO) membrane and further fractionated by various manipulations. The qPCR assay of marker genes demonstrated that the induction of CYP1A1 and GPX2 was mitigated after passing through C18 and chelate columns. In addition, clear induction of CYP1A1 was observed in the smallest size fraction with 1 k Da or smaller organic molecules in all the tested effluents. These results together with the water quality data of the fractionated samples suggested that responsible constituents for potentially adverse and abnormal transcriptomic responses in HepG2 could have hydrophobic nature and act with metal-dissolved organic matter (DOM) complexes in 1 k Da or smaller size fraction. Although DOM is known to play two contradictory roles as a protector and an inducer of toxicants, our present study indicated the DOM in wastewater effluent, particularly humic substances with acidic nature, functioned as a toxicity inducer of residual chemicals in the effluents. This study provided a new insight into the nature of "toxic unknowns" in the wastewater effluents, which should be monitored whole through the reclamation process and prioritized for removal.
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Affiliation(s)
- Hiroe Hara-Yamamura
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Toshikazu Fukushima
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Lea Chua Tan
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Satoshi Okabe
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.
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104
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Drakvik E, Altenburger R, Aoki Y, Backhaus T, Bahadori T, Barouki R, Brack W, Cronin MTD, Demeneix B, Hougaard Bennekou S, van Klaveren J, Kneuer C, Kolossa-Gehring M, Lebret E, Posthuma L, Reiber L, Rider C, Rüegg J, Testa G, van der Burg B, van der Voet H, Warhurst AM, van de Water B, Yamazaki K, Öberg M, Bergman Å. Statement on advancing the assessment of chemical mixtures and their risks for human health and the environment. ENVIRONMENT INTERNATIONAL 2020; 134:105267. [PMID: 31704565 PMCID: PMC6979318 DOI: 10.1016/j.envint.2019.105267] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/01/2019] [Accepted: 10/13/2019] [Indexed: 05/20/2023]
Abstract
The number of anthropogenic chemicals, manufactured, by-products, metabolites and abiotically formed transformation products, counts to hundreds of thousands, at present. Thus, humans and wildlife are exposed to complex mixtures, never one chemical at a time and rarely with only one dominating effect. Hence there is an urgent need to develop strategies on how exposure to multiple hazardous chemicals and the combination of their effects can be assessed. A workshop, "Advancing the Assessment of Chemical Mixtures and their Risks for Human Health and the Environment" was organized in May 2018 together with Joint Research Center in Ispra, EU-funded research projects and Commission Services and relevant EU agencies. This forum for researchers and policy-makers was created to discuss and identify gaps in risk assessment and governance of chemical mixtures as well as to discuss state of the art science and future research needs. Based on the presentations and discussions at this workshop we want to bring forward the following Key Messages.
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Affiliation(s)
- Elina Drakvik
- Karolinska Institutet, Institute of Environmental Medicine, Nobels väg 13, SE-171 77 Stockholm, Sweden; Stockholm University, ACES, SE-106 91 Stockholm, Sweden.
| | - Rolf Altenburger
- Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Yasunobu Aoki
- National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Thomas Backhaus
- University of Gothenburg, Department of Biological and Environmental Sciences, Box 461, SE-405 30 Gothenburg, Sweden
| | - Tina Bahadori
- US Environmental Protection Agency, 1200 Pennsylvania Ave, NW, MC 8201R, Washington, DC 20460, USA
| | - Robert Barouki
- Université de Paris, Inserm Unit 1124, 45 rue des Saints Pères, 75006 Paris, France
| | - Werner Brack
- Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany; RWTH Aachen University Institute for Environmental Research, ABBt-aachen Biology, Worringerweg 1, 52074 Aachen, Germany
| | - Mark T D Cronin
- Liverpool John Moores University, School of Pharmacy and Biomolecular Sciences, Byrom Street, Liverpool L3 3AF, UK
| | - Barbara Demeneix
- Muséum National d'Histoire Naturelle (MNHN) UMR 7221 (CNRS/MNHN), 7 rue Cuvier, 75005 Paris, France
| | | | - Jacob van Klaveren
- National Institute for Public Health and the Environment (RIVM), P.O. Box 1, 3720 BA Bilthoven, the Netherlands
| | - Carsten Kneuer
- German Federal Institute for Risk Assessment, Pesticide Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | | | - Erik Lebret
- National Institute for Public Health and the Environment (RIVM), P.O. Box 1, 3720 BA Bilthoven, the Netherlands; Institute of Risk Assessment Sciences - IRAS, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Leo Posthuma
- National Institute for Public Health and the Environment (RIVM), P.O. Box 1, 3720 BA Bilthoven, the Netherlands; Radboud University, Department of Environmental Science, Institute for Water and Wetland Research, Nijmegen, the Netherlands
| | - Lena Reiber
- German Environment Agency (UBA), Corrensplatz 1, 14195 Berlin, Germany
| | - Cynthia Rider
- National Toxicology Program, National Institute of Environmental Health Sciences, 111 TW Alexander Drive, PO Box 12233, MD:K2-12, Research Triangle Park, NC 27709, USA
| | - Joëlle Rüegg
- Karolinska Institutet, Institute of Environmental Medicine, Nobels väg 13, SE-171 77 Stockholm, Sweden; Uppsala University, Department of Organismal Biology, Norbyvägen 18A, SE-752 36 Uppsala, Sweden
| | - Giuseppe Testa
- University of Milan, Department of Oncology, Via S. Sofia, 9/1, 20122 Milan, Italy; IEO European Institute of Oncology, Via Adamello 16, 20139 Milan, Italy
| | - Bart van der Burg
- BioDetection Systems, Science Park 406, 1098XH Amsterdam, the Netherlands
| | - Hilko van der Voet
- Wageningen University & Research, Droevendaalsesteeg 1, 6708PB Wageningen, the Netherlands
| | | | - Bob van de Water
- Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, the Netherlands
| | - Kunihiko Yamazaki
- Ministry of the Environment, Japan, 1-2-2 Kasumigaseki, Chiyoda-ku, Tokyo 100-8975, Japan
| | - Mattias Öberg
- Karolinska Institutet, Institute of Environmental Medicine, Nobels väg 13, SE-171 77 Stockholm, Sweden
| | - Åke Bergman
- Stockholm University, ACES, SE-106 91 Stockholm, Sweden; Örebro University, Department of Science and Technology, SE-701 82 Örebro, Sweden; State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
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105
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Hashmi MAK, Krauss M, Escher BI, Teodorovic I, Brack W. Effect-Directed Analysis of Progestogens and Glucocorticoids at Trace Concentrations in River Water. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:189-199. [PMID: 31614391 DOI: 10.1002/etc.4609] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/18/2019] [Accepted: 10/01/2019] [Indexed: 05/07/2023]
Abstract
Effect-based monitoring is increasingly applied to detect and-in conjunction with chemical analysis-to identify endocrine-disrupting compounds (EDCs) in the environment. Although this approach of effect-directed analysis has been successfully demonstrated for estrogenicity and androgenicity, data on progestogens and glucocorticoids driving endocrine disruption are quite limited. We investigated progestogenic and glucocorticoid activities in Danube River water receiving untreated wastewater from Novi Sad, Serbia. After a 2-step fractionation, all fractions were tested with reporter gene bioassays for agonistic and antagonistic hormonal responses at progestogenic and glucocorticoid hormone receptors as well as with target and nontarget analytical screening of active fractions by liquid chromatography-high-resolution mass spectrometry. Due to masking by cytotoxic mixture components, the effects could not be detected in the raw water extract but were unraveled only after fractionation. Target chemical screening of the fraction that was active in the progesterone receptor (PR) assay revealed that progesterone and megestrol acetate were predominant drivers of PR-mediated activity along with medroxyprogesterone, dihydrotestosterone, androsterone, and epiandrosterone. Hydrocortisone was detected at sub-ng/L concentration in the active fraction in the glucocorticoid receptor (GR) assay but could not explain a significant fraction of the observed GR activity. The present study indicates that effect-based monitoring is a powerful tool to detect EDCs in the aquatic environment but that fractionation may be required to avoid masking effects of mixture components. Future effect-directed analysis studies are required to better understand the occurrence of EDCs and masking compounds in different lipophilicity windows, to finally reduce fractionation requirements for monitoring to a smart clean-up. Environ Toxicol Chem 2019;39:189-199. © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC.
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Affiliation(s)
- Muhammad Arslan Kamal Hashmi
- Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
- Department of Ecosystem Analysis, Institute for Environmental Research (Biology V), RWTH Aachen University Aachen, Germany
| | - Martin Krauss
- Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Beate I Escher
- Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
- Environmental Toxicology, Center for Applied Geoscience, Eberhard Karls University Tübingen, Tübingen, Germany
| | | | - Werner Brack
- Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
- Department of Ecosystem Analysis, Institute for Environmental Research (Biology V), RWTH Aachen University Aachen, Germany
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106
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Houtman CJ, Kroesbergen J, Baggelaar PK, van Lieverloo JHM. Statistical analysis of a large set of semi-quantitative GC-MS screening data to evaluate and prioritize organic contaminants in surface and drinking water of the Netherlands. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 697:133806. [PMID: 31479904 DOI: 10.1016/j.scitotenv.2019.133806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 08/05/2019] [Accepted: 08/05/2019] [Indexed: 06/10/2023]
Abstract
Due to anthropogenic activities in the catchments, surface waters are contaminated with a large variety of chemical compounds. Drinking water companies in the Netherlands use surface water from the rivers Rhine, and Meuse, Lake IJssel and water from a reclaimed land area as sources for the production of drinking water. Samples from the abstraction points and the produced drinking waters were investigated using chemical screening with gas chromatography coupled to mass spectrometry to detect an as wide as possible range of organic contaminants, generating enormous data sets. This study aimed to evaluate and interpret five and a half years of screening data to get insight in the variety of known and new less polar compounds in surface and drinking waters, and to investigate if there were spatial patterns in the detection of compounds. Compounds from a wide variety of applications were detected. The vast majority of detected compounds was found only in a few samples. Certain compounds, however, e.g. organophosphate flame retardants, were detected with prevalences up to 100% per location. Most compounds were detected in samples from the rivers Rhine and Meuse, less in those from Lake IJssel and the reclaimed land area and only few in drinking water. Principal component and Hierarchical Cluster Analyses helped to detect patterns in the presence of contaminants on particular locations and to prioritize compounds for further investigation of their emission sources, and -in case of unknown compounds - their identification.
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Affiliation(s)
- Corine J Houtman
- The Water Laboratory, P.O. Box 734, 2003 RS Haarlem, the Netherlands.
| | - Jan Kroesbergen
- The Water Laboratory, P.O. Box 734, 2003 RS Haarlem, the Netherlands
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107
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Gaw S, Harford A, Pettigrove V, Sevicke‐Jones G, Manning T, Ataria J, Cresswell T, Dafforn KA, Leusch FDL, Moggridge B, Cameron M, Chapman J, Coates G, Colville A, Death C, Hageman K, Hassell K, Hoak M, Gadd J, Jolley DF, Karami A, Kotzakoulakis K, Lim R, McRae N, Metzeling L, Mooney T, Myers J, Pearson A, Saaristo M, Sharley D, Stuthe J, Sutherland O, Thomas O, Tremblay L, Wood W, Boxall ABA, Rudd MA, Brooks BW. Towards Sustainable Environmental Quality: Priority Research Questions for the Australasian Region of Oceania. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2019; 15:917-935. [PMID: 31273905 PMCID: PMC6899907 DOI: 10.1002/ieam.4180] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/26/2019] [Accepted: 06/24/2019] [Indexed: 05/06/2023]
Abstract
Environmental challenges persist across the world, including the Australasian region of Oceania, where biodiversity hotspots and unique ecosystems such as the Great Barrier Reef are common. These systems are routinely affected by multiple stressors from anthropogenic activities, and increasingly influenced by global megatrends (e.g., the food-energy-water nexus, demographic transitions to cities) and climate change. Here we report priority research questions from the Global Horizon Scanning Project, which aimed to identify, prioritize, and advance environmental quality research needs from an Australasian perspective, within a global context. We employed a transparent and inclusive process of soliciting key questions from Australasian members of the Society of Environmental Toxicology and Chemistry. Following submission of 78 questions, 20 priority research questions were identified during an expert workshop in Nelson, New Zealand. These research questions covered a range of issues of global relevance, including research needed to more closely integrate ecotoxicology and ecology for the protection of ecosystems, increase flexibility for prioritizing chemical substances currently in commerce, understand the impacts of complex mixtures and multiple stressors, and define environmental quality and ecosystem integrity of temporary waters. Some questions have specific relevance to Australasia, particularly the uncertainties associated with using toxicity data from exotic species to protect unique indigenous species. Several related priority questions deal with the theme of how widely international ecotoxicological data and databases can be applied to regional ecosystems. Other timely questions, which focus on improving predictive chemistry and toxicology tools and techniques, will be important to answer several of the priority questions identified here. Another important question raised was how to protect local cultural and social values and maintain indigenous engagement during problem formulation and identification of ecosystem protection goals. Addressing these questions will be challenging, but doing so promises to advance environmental sustainability in Oceania and globally.
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Affiliation(s)
- Sally Gaw
- School of Physical and Chemical SciencesUniversity of CanterburyChristchurchNew Zealand
| | - Andrew Harford
- Department of the Environment and EnergyAustralian Government, DarwinAustralia
| | - Vincent Pettigrove
- Aquatic Environmental Stress Research CentreRMIT University, BundooraVictoriaAustralia
| | | | | | | | - Tom Cresswell
- Australia's Nuclear Science and Technology OrganisationLucas HeightsAustralia
| | | | - Frederic DL Leusch
- Australian Rivers Institute and School of Environment and ScienceGriffith UniversityBrisbaneAustralia
| | - Bradley Moggridge
- Institute for Applied EcologyUniversity of CanberraCanberraAustralia
| | | | - John Chapman
- Office of Environment and HeritageNew South WalesAustralia
| | - Gary Coates
- Te Rūnanga o Ngāi TahuChristchurchNew Zealand
| | - Anne Colville
- School of Life SciencesUniversity of Technology SydneySydneyAustralia
| | - Claire Death
- Faculty of Veterinary ScienceUniversity of MelbourneVictoriaAustralia
| | - Kimberly Hageman
- Department of Chemistry and BiochemistryUtah State University, LoganUtahUSA
| | - Kathryn Hassell
- Aquatic Environmental Stress Research CentreRMIT University, BundooraVictoriaAustralia
| | - Molly Hoak
- School of BiosciencesThe University of Melbourne, ParkvilleVictoriaAustralia
| | - Jennifer Gadd
- National Institute of Atmospheric and Water ResearchAucklandNew Zealand
| | - Dianne F Jolley
- Faculty of Science, University of Technology SydneySydneyAustralia
| | - Ali Karami
- Environmental Futures Research InstituteGriffith UniversityBrisbaneAustralia
| | | | - Richard Lim
- Faculty of Science, University of Technology SydneySydneyAustralia
| | - Nicole McRae
- School of Physical and Chemical SciencesUniversity of CanterburyChristchurchNew Zealand
| | | | - Thomas Mooney
- Department of the Environment and EnergyAustralian Government, DarwinAustralia
| | - Jackie Myers
- Aquatic Environmental Stress Research CentreRMIT University, BundooraVictoriaAustralia
| | | | - Minna Saaristo
- School of Biological SciencesMonash UniversityMelbourneAustralia
| | - Dave Sharley
- Bio2Lab, Melbourne Innovation CentreGreensboroughAustralia
| | | | | | - Oliver Thomas
- School of Applied Chemistry and Environmental ScienceRMIT University, MelbourneVictoriaAustralia
| | - Louis Tremblay
- Cawthron InstituteNelsonNew Zealand
- School of Biological SciencesUniversity of AucklandAucklandNew Zealand
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108
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Brion F, De Gussem V, Buchinger S, Hollert H, Carere M, Porcher JM, Piccini B, Féray C, Dulio V, Könemann S, Simon E, Werner I, Kase R, Aït-Aïssa S. Monitoring estrogenic activities of waste and surface waters using a novel in vivo zebrafish embryonic (EASZY) assay: Comparison with in vitro cell-based assays and determination of effect-based trigger values. ENVIRONMENT INTERNATIONAL 2019; 130:104896. [PMID: 31195222 DOI: 10.1016/j.envint.2019.06.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 05/06/2019] [Accepted: 06/03/2019] [Indexed: 05/15/2023]
Abstract
This study reports the use of the recently developed EASZY assay that uses transgenic cyp19a1b-GFP zebrafish (Danio rerio) embryos to assess in vivo estrogenic activity of 33 surface (SW) and waste water (WW) samples collected across Europe that were previously well-characterized for estrogen hormones and in vitro estrogenic activity. We showed that 18 out of the 33 SW and WW samples induced estrogenic responses in the EASZY assay leading to a significant and concentration-dependent up-regulation of the ER-regulated cyp19a1b gene expression in the developing brain. The in vivo 17β-estradiol-equivalents (EEQs) were highly correlated with, both, the chemical analytical risk quotient (RQ) based on steroidal estrogen concentrations and EEQs reported from five different in vitro reporter gene assays. Regression analyses between the vitro and in vivo effect concentrations allowed us to determine an optimal cut-off value for each in vitro assay, above which in vivo responses were observed. These in vitro assay-specific effect-based trigger values (EBTs), ranging from 0.28 to 0.58 ng EEQ/L define the sensitivity and specificity of the individual in vitro assays for predicting a risk associated with substances acting through the same mode of action in water samples. Altogether, this study demonstrates the toxicological relevance of in vitro-based assessment of estrogenic activity and recommends the use of such in vitro/in vivo comparative approach to refine and validate EBTs for mechanism-based bioassays.
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Affiliation(s)
- François Brion
- Institut National de l'Environnement Industriel et des risques (INERIS), Unité d'Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, 60550 Verneuil-en-Halatte, France.
| | - Valentin De Gussem
- Institut National de l'Environnement Industriel et des risques (INERIS), Unité d'Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, 60550 Verneuil-en-Halatte, France
| | - Sebastian Buchinger
- Bundesanstalt für Gewässerkunde, Am Mainzer Tor 1, 56068 Koblenz, DE, Germany
| | - Henner Hollert
- Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074 Aachen, DE, Germany
| | - Mario Carere
- National Institute of Health, Department Environment and Health, Roma, Italy
| | - Jean-Marc Porcher
- Institut National de l'Environnement Industriel et des risques (INERIS), Unité d'Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, 60550 Verneuil-en-Halatte, France
| | - Benjamin Piccini
- Institut National de l'Environnement Industriel et des risques (INERIS), Unité d'Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, 60550 Verneuil-en-Halatte, France
| | - Christine Féray
- Institut National de l'Environnement Industriel et des risques (INERIS), Chronic Risk Division, 60550 Verneuil-en-Halatte, France; National Reference Laboratory for Monitoring Aquatic Environments (AQUAREF), 60550 Verneuil-en-Halatte, France
| | - Valeria Dulio
- Institut National de l'Environnement Industriel et des risques (INERIS), Chronic Risk Division, 60550 Verneuil-en-Halatte, France
| | - Sarah Könemann
- Swiss Centre for Applied Ecotoxicology Eawag-EPFL, Überlandstrasse 131, Dübendorf, CH, Switzerland; Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074 Aachen, DE, Germany
| | - Eszter Simon
- Swiss Centre for Applied Ecotoxicology Eawag-EPFL, Überlandstrasse 131, Dübendorf, CH, Switzerland
| | - Inge Werner
- Swiss Centre for Applied Ecotoxicology Eawag-EPFL, Überlandstrasse 131, Dübendorf, CH, Switzerland
| | - Robert Kase
- FHNW University of Applied Sciences and Arts Northwestern, Switzerland
| | - Selim Aït-Aïssa
- Institut National de l'Environnement Industriel et des risques (INERIS), Unité d'Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, 60550 Verneuil-en-Halatte, France
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109
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Recent developments and concepts of effect-based methods for the detection of endocrine activity and the importance of antagonistic effects. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.06.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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110
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Rummel CD, Escher BI, Sandblom O, Plassmann MM, Arp HPH, MacLeod M, Jahnke A. Effects of Leachates from UV-Weathered Microplastic in Cell-Based Bioassays. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:9214-9223. [PMID: 31257880 DOI: 10.1021/acs.est.9b02400] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Standard ecotoxicological testing of microplastic does not provide insight into the influence that environmental weathering by, e.g., UV light has on related effects. In this study, we leached chemicals from plastic into artificial seawater during simulated UV-induced weathering. We tested largely additive-free preproduction polyethylene, polyethylene terephthalate, polypropylene, and polystyrene and two types of plastic obtained from electronic equipment as positive controls. Leachates were concentrated by solid-phase extraction and dosed into cell-based bioassays that cover (i) cytotoxicity; (ii) activation of metabolic enzymes via binding to the arylhydrocarbon receptor (AhR) and the peroxisome proliferator-activated receptor (PPARγ); (iii) specific, receptor-mediated effects (estrogenicity, ERα); and (iv) adaptive response to oxidative stress (AREc32). LC-HRMS analysis was used to identify possible chain-scission products of polymer degradation, which were then tested in AREc32 and PPARγ. Explicit activation of all assays by the positive controls provided proof-of-concept of the experimental setup to demonstrate effects of chemicals liberated during weathering. All plastic leachates activated the oxidative stress response, in most cases with increased induction by UV-treated samples compared to dark controls. For PPARγ, polyethylene-specific effects were partially explained by the detected dicarboxylic acids. Since the preproduction plastic showed low effects often in the range of the blanks future studies should investigate implications of weathering on end consumer products containing additives.
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Affiliation(s)
- Christoph D Rummel
- Department of Bioanalytical Ecotoxicology and Department of Cell Toxicology , Helmholtz Centre for Environmental Research-UFZ , Permoserstraße 15 , DE-04318 Leipzig , Germany
| | - Beate I Escher
- Department of Bioanalytical Ecotoxicology and Department of Cell Toxicology , Helmholtz Centre for Environmental Research-UFZ , Permoserstraße 15 , DE-04318 Leipzig , Germany
- Center for Applied Geoscience , Eberhard Karls University Tübingen, Environmental Toxicology , Hölderlinstraße 12 , DE-72074 Tübingen , Germany
| | - Oskar Sandblom
- Department of Environmental Science and Analytical Chemistry (ACES) , Stockholm University , Svante Arrhenius väg 8 , SE-114 18 Stockholm , Sweden
| | - Merle M Plassmann
- Department of Environmental Science and Analytical Chemistry (ACES) , Stockholm University , Svante Arrhenius väg 8 , SE-114 18 Stockholm , Sweden
| | - Hans Peter H Arp
- Department of Environmental Engineering , Norwegian Geotechnical Institute (NGI) , Sognsvann 72 , NO-0855 Oslo , Norway
- Department of Chemistry , Norwegian University of Science and Technology (NTNU) , NO-7491 Trondheim , Norway
| | - Matthew MacLeod
- Department of Environmental Science and Analytical Chemistry (ACES) , Stockholm University , Svante Arrhenius väg 8 , SE-114 18 Stockholm , Sweden
| | - Annika Jahnke
- Department of Bioanalytical Ecotoxicology and Department of Cell Toxicology , Helmholtz Centre for Environmental Research-UFZ , Permoserstraße 15 , DE-04318 Leipzig , Germany
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111
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Berninger JP, DeMarini DM, Warren SH, Simmons JE, Wilson VS, Conley JM, Armstrong MD, Iwanowicz LR, Kolpin DW, Kuivila KM, Reilly TJ, Romanok KM, Villeneuve DL, Bradley PM. Predictive Analysis Using Chemical-Gene Interaction Networks Consistent with Observed Endocrine Activity and Mutagenicity of U.S. Streams. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:8611-8620. [PMID: 31287672 PMCID: PMC6770991 DOI: 10.1021/acs.est.9b02990] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In a recent U.S. Geological Survey/U.S. Environmental Protection Agency study assessing more than 700 organic compounds in 38 streams, in vitro assays indicated generally low estrogen, androgen, and glucocorticoid receptor activities, with 13 surface waters with 17β-estradiol-equivalent (E2Eq) activities greater than a 1-ng/L estimated effects-based trigger value for estrogenic effects in male fish. Among the 36 samples assayed for mutagenicity in the Salmonella bioassay (reported here), 25% had low mutagenic activity and 75% were not mutagenic. Endocrine and mutagenic activities of the water samples were well correlated with each other and with the total number and cumulative concentrations of detected chemical contaminants. To test the predictive utility of knowledge-base-leveraging approaches, site-specific predicted chemical-gene (pCGA) and predicted analogous pathway-linked (pPLA) association networks identified in the Comparative Toxicogenomics Database were compared with observed endocrine/mutagenic bioactivities. We evaluated pCGA/pPLA patterns among sites by cluster analysis and principal component analysis and grouped the pPLA into broad mode-of-action classes. Measured E2eq and mutagenic activities correlated well with predicted pathways. The pPLA analysis also revealed correlations with signaling, metabolic, and regulatory groups, suggesting that other effects pathways may be associated with chemical contaminants in these waters and indicating the need for broader bioassay coverage to assess potential adverse impacts.
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Affiliation(s)
- Jason P. Berninger
- Columbia Environmental Research Center, U.S. Geological Survey, Columbia, Missouri 65201, United States
| | - David M. DeMarini
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, United States
| | - Sarah H. Warren
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, United States
| | - Jane Ellen Simmons
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, United States
| | - Vickie S. Wilson
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, United States
| | - Justin M. Conley
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, United States
| | - Mikayla D. Armstrong
- Department of Environmental Science and Engineering, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Luke R. Iwanowicz
- Leetown Science Center, U.S. Geological Survey, Kearneysville, West Virginia 25430, United States
| | - Dana W. Kolpin
- Central Midwest Water Science Center, U.S. Geological Survey, Iowa City, Iowa 52240, United States
| | - Kathryn M. Kuivila
- Oregon Water Science Center, U.S. Geological Survey, Portland, Oregon 97201, United States
| | - Timothy J. Reilly
- New Jersey Water Science Center, U.S. Geological Survey, Lawrenceville, New Jersey 08648, United States
| | - Kristin M. Romanok
- New Jersey Water Science Center, U.S. Geological Survey, Lawrenceville, New Jersey 08648, United States
| | - Daniel L. Villeneuve
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Duluth, Minnesota 55804, United States
| | - Paul M. Bradley
- South Atlantic Water Science Center, U.S. Geological Survey, Columbia, South Carolina 29210, United States
- Corresponding author: Phone 803-727-9046;
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112
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Escher BI, Glauch L, König M, Mayer P, Schlichting R. Baseline Toxicity and Volatility Cutoff in Reporter Gene Assays Used for High-Throughput Screening. Chem Res Toxicol 2019; 32:1646-1655. [PMID: 31313575 DOI: 10.1021/acs.chemrestox.9b00182] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Most studies using high-throughput in vitro cell-based bioassays tested chemicals up to a certain fixed concentration. It would be more appropriate to test up to concentrations predicted to elicit baseline toxicity because this is the minimal toxicity of every chemical. Baseline toxicity is also called narcosis and refers to nonspecific intercalation of chemicals in biological membranes, leading to loss of membrane structure and impaired functioning of membrane-related processes such as mitochondrial respiration. In cells, baseline toxicity manifests as cytotoxicity, which was quantified by a robust live-cell imaging method. Inhibitory concentrations for baseline toxicity varied by orders of magnitude between chemicals and were described by a simple quantitative structure activity relationship (QSAR) with the liposome-water partition constant as a sole descriptor. The QSAR equations were remarkably similar for eight reporter gene cell lines of different cellular origin, six of which were used in Tox21. Mass-balance models indicated constant critical membrane concentrations for all cells and all chemicals with a mean of 69 mmol·kglip-1(95% CI: 49-89), which is in the same range as for bacteria and aquatic organisms and consistent with the theory of critical membrane burden of narcosis. The challenge of developing baseline QSARs for cell lines is that many confirmed baseline toxicants are rather volatile. We deduced from cytotoxicity experiments with semi-volatile chemicals that only chemicals with medium-air partition constants >10,000 L/L can be tested in standard robotic setups without appreciable loss of effect. Chemicals just below that cutoff showed crossover effects in neighboring wells, whereas the effects of chemicals with lower medium-air partition constants were plainly lost. Applying the "volatility cut-off" to >8000 chemicals tested in Tox21 indicated that approximately 20% of Tox21 chemicals could have partially been lost during the experiments. We recommend applying the baseline QSARs together with volatility cut-offs for experimental planning of reporter gene assays, that is, to dose only chemicals with medium-air partition constants >10,000 at concentrations up to the baseline toxicity level.
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Affiliation(s)
- Beate I Escher
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstr. 15 , DE-04318 Leipzig , Germany.,Environmental Toxicology, Center for Applied Geoscience , Eberhard Karls University Tübingen , Hölderlinstr. 12 , DE-72074 Tübingen , Germany
| | - Lisa Glauch
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstr. 15 , DE-04318 Leipzig , Germany
| | - Maria König
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstr. 15 , DE-04318 Leipzig , Germany
| | - Philipp Mayer
- Department of Environmental Engineering , Technical University of Denmark , Bygningstorvet 115 , DK-2800 Kongens Lyngby , Denmark
| | - Rita Schlichting
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstr. 15 , DE-04318 Leipzig , Germany
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113
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De Baat ML, Kraak MHS, Van der Oost R, De Voogt P, Verdonschot PFM. Effect-based nationwide surface water quality assessment to identify ecotoxicological risks. WATER RESEARCH 2019; 159:434-443. [PMID: 31125803 DOI: 10.1016/j.watres.2019.05.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/08/2019] [Accepted: 05/11/2019] [Indexed: 05/26/2023]
Abstract
A large portion of the toxic effects observed in surface waters cannot be attributed to compounds regularly measured by water authorities. Hence, there is an urgent need for an effect-based monitoring strategy that employs bioassays to identify environmental risks. The aim of the present study was to perform an effect-based nationwide water quality assessment to identify ecotoxicological risks in a wide variety of surface waters. At 45 locations silicone rubbers and polar organic chemical integrative samplers were exposed to surface water for 6 weeks. Alongside the passive samplers an in-situ daphnid test was performed. Subsequent to field exposure, accumulated compounds were extracted from the passive samplers after which a battery of in vivo and in vitro bioassays was exposed to the extracts. The bioassay battery was selected such that it could identify the risks posed by a wide range of chemical pollutants and their transformation products, while simultaneously allowing for targeted identification of groups of compounds that cause specific effects. Bioassay responses were compared to effect-based trigger values to identify potential ecotoxicological risks at the investigated locations. Responses were observed in all bioassays, and trigger values were exceeded in 9 out of the 21 applied assays, allowing for ranking of the investigated locations based on ecotoxicological risks. No relationship between land use and the identification of ecotoxicological risks was observed. Based on the results, considerations regarding future improvements of effect-based monitoring are given. It is concluded that effect-based water quality assessment allowed prioritization of sites based on ecotoxicological risks, identified the presence of hazardous compounds regardless of being listed as priority substances, and meanwhile could prevent costly chemical analysis at sites with low ecotoxicological risks.
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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.
| | - M H S Kraak
- 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
| | - P De Voogt
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, the Netherlands; KWR Watercycle Research Institute, Nieuwegein, 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
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114
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Ma XY, Wang Y, Dong K, Wang XC, Zheng K, Hao L, Ngo HH. The treatability of trace organic pollutants in WWTP effluent and associated biotoxicity reduction by advanced treatment processes for effluent quality improvement. WATER RESEARCH 2019; 159:423-433. [PMID: 31121410 DOI: 10.1016/j.watres.2019.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/25/2019] [Accepted: 05/04/2019] [Indexed: 06/09/2023]
Abstract
As increasing attention is paid to surface water protection, there has been demand for improvements of domestic wastewater treatment plant (WWTP) effluent. This has led to the application of many different advanced treatment processes (ATPs). In this study, the treatability of trace organic pollutants in secondary effluent (SE) and associated biotoxicity reduction by four types of ATPs, including coagulation, granular activated carbon (GAC) adsorption, ultraviolet (UV) photolysis and photocatalysis, and ozonation, were investigated at the bench-scale. The ATPs showed different removal capacity for the 48 chemicals, which were classified into seven categories. EDCs, herbicides, bactericides and pharmaceuticals were readily degraded, and insecticides, flame retardants, and UV filters were relatively resistant to removal. During these processes, the efficiency of the ATPs in reducing four biological effects were investigated. Of the four biological effects, the estrogenic activity from SE was not detected using the yeast estrogen screen. In contrast with genotoxicity and photosynthesis inhibition, bacterial cytotoxicity posed by SE was the most difficult biological effect to reduce with these ATPs. GAC adsorption and ozonation were the most robust treatment processes for reducing the three detected biotoxicities. UV photolysis and photocatalysis showed comparable efficiencies for the reduction of genotoxicity and photosynthesis inhibition. However, coagulation only performed well in genotoxicity reduction. The effect-based trigger values for the four bioassays, that were derived from the existing environmental quality standards and from HC5 (hazardous concentration for 5% of aquatic organisms), were all used to select and optimize these ATPs for ecological safety. Conducting ATPs in more appropriate ways could eliminate the negative effects of WWTP effluent on receiving water bodies.
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Affiliation(s)
- Xiaoyan Y Ma
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi Province, PR China.
| | - Yongkun Wang
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi Province, PR China
| | - Ke Dong
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi Province, PR China
| | - Xiaochang C Wang
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi Province, PR China.
| | - Kai Zheng
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi Province, PR China
| | - Liwei Hao
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi Province, PR China
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Broadway, NSW, 2007, Australia
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115
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Zurita J, Peso AD, Rojas R, Maisanaba S, Repetto G. Integration of fish cell cultures in the toxicological assessment of effluents. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 176:309-320. [PMID: 30951978 DOI: 10.1016/j.ecoenv.2019.03.101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 03/07/2019] [Accepted: 03/25/2019] [Indexed: 06/09/2023]
Abstract
The pollution by industrial and municipal effluents are major sources of concerns. Fish cell cultures were applied in different strategies of the evaluation of effluents, particularly whole toxicity, toxicity identification evaluation and mode of action studies based in adverse outcome pathways. Whole effluent toxicity was evaluated using a battery of five model systems from four trophic levels: Daphnia magna was the most sensitive system, followed by the hepatoma fish cell line PLHC-1, the bacterium Allivibrio fischeri, the fibroblastic fish cell line RTG-2 and the algae Chlorella vulgaris, detecting a risk of eutrofization. The uptake of neutral red was more sensitive than the content of protein assay. The main morphological alterations observed were cell loss, hydropic degeneration, and a general loss of lysosomes and of their perinuclear distribution. The toxicity was characterized in PLHC-1 cells through toxicity identification evaluation, in which a partial reduction with graduation at pH 11, filtration, aeration and addition of thiosulfate or EDTA was shown; on the other hand, a low sorption in solid phase extraction suggested that the main responsible were not organic compounds. Consequently, it was not necessary to apply an effect directed analysis HPLC fractionation. In the chemical identification phase, Zn, Cd, As, Cu and Pb were quantified in decreasing concentrations. In the toxicity confirmation phase, a reconstituted sample and individual solutions, presented decreasing toxicity: Zn > Pb > As+5 > Cd > Cu > As+3, the global toxicity being explained by response addition. In the last step, the mode of action was investigated using five specific biomarkers. While metallothionein and succinate dehydrogenase activity were increased, no changes occurred for lysosomal function, acetylcholinesterase and EROD activities, the responsibility of the toxicity for the elements found being confirmed.
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Affiliation(s)
| | - Ana Del Peso
- National Institute of Toxicology and Forensic Sciences, Seville, Spain
| | - Raquel Rojas
- Area of Toxicology, Universidad Pablo de Olavide, Carretera de Utrera km. 1, 41013, Seville, Spain
| | - Sara Maisanaba
- Area of Toxicology, Universidad Pablo de Olavide, Carretera de Utrera km. 1, 41013, Seville, Spain
| | - Guillermo Repetto
- Area of Toxicology, Universidad Pablo de Olavide, Carretera de Utrera km. 1, 41013, Seville, Spain.
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116
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Völker J, Stapf M, Miehe U, Wagner M. Systematic Review of Toxicity Removal by Advanced Wastewater Treatment Technologies via Ozonation and Activated Carbon. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:7215-7233. [PMID: 31120742 DOI: 10.1021/acs.est.9b00570] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Upgrading wastewater treatment plants (WWTPs) with advanced technologies is one key strategy to reduce micropollutant emissions. Given the complex chemical composition of wastewater, toxicity removal is an integral parameter to assess the performance of WWTPs. Thus, the goal of this systematic review is to evaluate how effectively ozonation and activated carbon remove in vitro and in vivo toxicity. Out of 2464 publications, we extracted 46 relevant studies conducted at 22 pilot or full-scale WWTPs. We performed a quantitative and qualitative evaluation of in vitro (100 assays) and in vivo data (20 species), respectively. Data is more abundant on ozonation (573 data points) than on an activated carbon treatment (162 data points), and certain in vitro end points (especially estrogenicity) and in vivo models (e.g., daphnids) dominate. The literature shows that while a conventional treatment effectively reduces toxicity, residual effects in the effluents may represent a risk to the receiving ecosystem on the basis of effect-based trigger values. In general, an upgrade to ozonation or activated carbon treatment will significantly increase toxicity removal with similar performance. Nevertheless, ozonation generates toxic transformation products that can be removed by a post-treatment. By assessing the growing body of effect-based studies, we identify sensitive and underrepresented end points and species and provide guidance for future research.
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Affiliation(s)
- Johannes Völker
- Department of Biology , Norwegian University of Science and Technology (NTNU) , Trondheim 7491 , Norway
| | - Michael Stapf
- Berlin Centre of Competence for Water (KWB) , Berlin 10709 , Germany
| | - Ulf Miehe
- Berlin Centre of Competence for Water (KWB) , Berlin 10709 , Germany
| | - Martin Wagner
- Department of Biology , Norwegian University of Science and Technology (NTNU) , Trondheim 7491 , Norway
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117
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Serra H, Scholze M, Altenburger R, Busch W, Budzinski H, Brion F, Aït-Aïssa S. Combined effects of environmental xeno-estrogens within multi-component mixtures: Comparison of in vitro human- and zebrafish-based estrogenicity bioassays. CHEMOSPHERE 2019; 227:334-344. [PMID: 30999174 DOI: 10.1016/j.chemosphere.2019.04.060] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/07/2019] [Accepted: 04/08/2019] [Indexed: 05/15/2023]
Abstract
Some recent studies showed that in vitro bioassays based on fish or human estrogen receptor (ER) activation may have distinct responses to environmental samples, highlighting the need to better understand bioassay-specific ER response to environmental mixtures. For this purpose, we investigated a 12-compound mixture in two mixture ratios (M1 and M2) on zebrafish (zf) liver cells stably expressing zfERα (ZELHα cells) or zfERβ2 (ZELHβ2 cells) and on human ER-reporter gene (MELN) cells. The mixture included the well-known ER ligands bisphenol A (BPA) and genistein (GEN), and other compounds representatives of a freshwater background contamination. In this context, the study aimed at assessing the robustness of concentration addition (CA) model and the potential confounding influence of other chemicals by testing subgroups of ER activators, ER inhibitors or ER activators and inhibitors combined. Individual chemical testing showed a higher prevalence of ER inhibitors in zebrafish than human cells (e.g. propiconazole), and some chemicals inhibited zfER but activated hER response (e.g. benzo(a)pyrene, triphenylphosphate). The estrogenic activity of M1 and M2 was well predicted by CA in MELN cells, whereas it was significantly lower than predicted in ZELHβ2 cells, contrasting with the additive effects observed for BPA and GEN binary mixtures. When testing the subgroups of ER activators and inhibitors combined, the deviation from additivity in ZELHβ2 cells was caused by zebrafish-specific inhibiting chemicals. This study provides novel information on the ability of environmental pollutants to interfere with zfER signalling and shows that non-estrogenic chemicals can influence the response to a mixture of xeno-estrogens in a bioassay-specific manner.
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Affiliation(s)
- Hélène Serra
- Institut National de l'Environnement Industriel et des risques (INERIS), Unité Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, 60550, Verneuil-en-Halatte, France; UMR-CNRS EPOC/LPTC, Université de Bordeaux, Talence, France
| | | | - Rolf Altenburger
- UFZ- Helmholtz Centre for Environmental Research, Leipzig, Germany
| | - Wibke Busch
- UFZ- Helmholtz Centre for Environmental Research, Leipzig, Germany
| | | | - François Brion
- Institut National de l'Environnement Industriel et des risques (INERIS), Unité Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, 60550, Verneuil-en-Halatte, France
| | - Selim Aït-Aïssa
- Institut National de l'Environnement Industriel et des risques (INERIS), Unité Ecotoxicologie in vitro et in vivo, UMR-I 02 SEBIO, 60550, Verneuil-en-Halatte, France.
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Coady K, Browne P, Embry M, Hill T, Leinala E, Steeger T, Maślankiewicz L, Hutchinson T. When Are Adverse Outcome Pathways and Associated Assays "Fit for Purpose" for Regulatory Decision-Making and Management of Chemicals? INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2019; 15:633-647. [PMID: 30908812 PMCID: PMC6771501 DOI: 10.1002/ieam.4153] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 01/07/2019] [Accepted: 03/22/2019] [Indexed: 05/11/2023]
Abstract
There have been increasing demands for chemical hazard and risk assessments in recent years. Chemical companies have expanded internal product stewardship initiatives, and jurisdictions have increased the regulatory requirements for the manufacture and sale of chemicals. There has also been a shift in chemical toxicity evaluations within the same time frame, with new methodologies being developed to improve chemical safety assessments for both human health and the environment. With increased needs for chemical assessments coupled with more diverse data streams from new technologies, regulators and others tasked with chemical management activities are faced with increasing workloads and more diverse types of data to consider. The Adverse Outcome Pathway (AOP) framework can be applied in different scenarios to integrate data and guide chemical assessment and management activities. In this paper, scenarios of how AOPs can be used to guide chemical management decisions during research and development, chemical registration, and subsequent regulatory activities such as prioritization and risk assessment are considered. Furthermore, specific criteria (e.g., the type and level of AOP complexity, confidence in the AOP, as well as external review and assay validation) are proposed to examine whether AOPs and associated tools are fit for purpose when applied in different contexts. Certain toxicity pathways are recommended as priority areas for AOP research and development, and the continued use of AOPs and defined approaches in regulatory activities are recommended. Furthermore, a call for increased outreach, education, and enhanced use of AOP databases is proposed to increase their utility in chemicals management. Integr Environ Assess Manag 2019;15:633-647. © 2019 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals, Inc. on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
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Affiliation(s)
- Katie Coady
- Toxicology & Environmental Research & ConsultingDow Chemical CompanyMidlandMichiganUSA
| | - Patience Browne
- Environment, Health and Safety Division, Environment DirectorateOrganisation for Economic and Cooperative DevelopmentParisFrance
| | - Michelle Embry
- Health and Environmental Sciences InstituteWashingtonDCUSA
| | - Thomas Hill
- US Environmental Protection AgencyNational Health and Environmental Effects Research Laboratory, Research Triangle ParkNorth Carolina
| | - Eeva Leinala
- Environment, Health and Safety Division, Environment DirectorateOrganisation for Economic and Cooperative DevelopmentParisFrance
| | - Thomas Steeger
- US Environmental Protection Agency, Office of Pesticide ProgramsWashingtonDC
| | - Lidka Maślankiewicz
- National Institute of Public Health and the Environment (RIVM)Centre for Safety of Substances and Products, BilthovenThe Netherlands
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Henneberger L, Mühlenbrink M, König M, Schlichting R, Fischer FC, Escher BI. Quantification of freely dissolved effect concentrations in in vitro cell-based bioassays. Arch Toxicol 2019; 93:2295-2305. [DOI: 10.1007/s00204-019-02498-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 06/17/2019] [Indexed: 02/05/2023]
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Shao Y, Chen Z, Hollert H, Zhou S, Deutschmann B, Seiler TB. Toxicity of 10 organic micropollutants and their mixture: Implications for aquatic risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 666:1273-1282. [PMID: 30970492 DOI: 10.1016/j.scitotenv.2019.02.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 02/03/2019] [Accepted: 02/03/2019] [Indexed: 05/06/2023]
Abstract
Micropollutants, as a serious water pollution issue, raise considerable toxicological concerns, particularly when present as components of complex mixtures. Due to the interactions of environmental pollution components (contaminant), the micropollutant problem is increasingly complex, thus, water quality of organic chemical contamination assessed substance-by-substance might lead to underestimation in aquatic environmental risk assessment. To assess the aquatic environmental risk of micropollutants mixture, a total of 10 organic micropollutants were selected and analysed by an approach of integration of literature data, laboratory experiments and prediction techniques. The experiment results showed that all 10 micropollutants were capable of causing toxicity in zebrafish embryos, aquatic invertebrates and algae with the LC50 (50% lethal concentration) values from 1.14 mg/L to 14.37 mg/L. Triclosan, carbamazepine, diazinon and diuron were the most hazardous compounds in the Danube River and the Rhine River. The artificial mixture presented a strong antagonistic relationship, which demonstrated an independent action (IA) model of the mixture. Based on the observed toxicity data, the risk quotients (RQs) of environmental mixtures of the Danube River and the Rhine River were extrapolated. It can be concluded that the micropollutant mixture may pose a potential risk for aquatic ecosystems with the present environmentally measured concentrations in the Danube River and Rhine River. Mixture risk assessment results suggested that the toxicity of studied chemicals might be induced by dissimilar actions, which is in agreement with the mixture toxicity prediction of the IA model. The observed findings could be useful to establish an overview of the pressures, vision, measures and expectations for hazardous substances pollution, which can help in making to informed decisions to reduce the concentration and bioactive fraction of pollutants.
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Affiliation(s)
- Ying Shao
- Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany; Department of Cell Toxicology, UFZ - Helmholtz Centre for Environmental Research GmbH, Permoserstraße 15, 04318 Leipzig, Germany.
| | - Zhongli Chen
- Key Laboratory of the Three Gorges Reservoir Eco-environment, Chongqing University, 174 Shazheng Road, Shapingba, Chongqing 400045, China
| | - Henner Hollert
- Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany; College of Resources and Environmental Science, Chongqing University, 174 Shazheng Road, Shapingba, Chongqing 400044, China; College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, China
| | - Shangbo Zhou
- Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
| | - Björn Deutschmann
- Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
| | - Thomas-Benjamin Seiler
- Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany.
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Lundqvist J, Mandava G, Lungu-Mitea S, Lai FY, Ahrens L. In vitro bioanalytical evaluation of removal efficiency for bioactive chemicals in Swedish wastewater treatment plants. Sci Rep 2019; 9:7166. [PMID: 31073202 PMCID: PMC6509133 DOI: 10.1038/s41598-019-43671-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 04/29/2019] [Indexed: 11/26/2022] Open
Abstract
Chemical contamination of wastewater is a problem of great environmental concern, as it poses a hazard to both the ecosystem and to human health. In this study, we have performed a bioanalytical evaluation of the presence and removal efficiency for bioactive chemicals in wastewater treatment plants (WWTPs), using in vitro assays for toxicity endpoints of high relevance for human health. Water samples were collected at the inlet and outlet of five Swedish WWTPs, all adopting a treatment technology including pretreatment, primary treatment (sedimenation), seconday treatment (biological processes), post-sedimentation, and sludge handling. The water samples were analyzed for cytotoxicity, estrogenicity, androgenicity, aryl hydrocarbon receptor (AhR) activity, oxidative stress response (Nrf2) and the ability to activate NFĸB (nuclear factor kappa-light-chain-enhancer of activated B cells) signaling. We observed clear androgenic and estrogenic activities in all inlet samples. Androgenic and estrogenic activities were also observed in all outlet samples, but the activities were lower than the respective inlet sample. AhR activity was observed in all samples, with higher activities in the inlet samples compared to the outlet samples. The removal efficiency was found to be high for androgenic (>99% for two plants and 50–60% for two plants) and estrogenic (>90% for most plants) compounds, while the removal efficiency for AhR-inducing compounds was 50–60% for most plants and 16% for one plant.
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Affiliation(s)
- Johan Lundqvist
- 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
| | - Sebastian Lungu-Mitea
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7028, SE-750 07, Uppsala, Sweden
| | - Foon Yin Lai
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Box 7050, SE-750 07, Uppsala, Sweden
| | - Lutz Ahrens
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Box 7050, SE-750 07, Uppsala, Sweden
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Kratochvil I, Hofmann T, Rother S, Schlichting R, Moretti R, Scharnweber D, Hintze V, Escher BI, Meiler J, Kalkhof S, von Bergen M. Mono(2-ethylhexyl) phthalate (MEHP) and mono(2-ethyl-5-oxohexyl) phthalate (MEOHP) but not di(2-ethylhexyl) phthalate (DEHP) bind productively to the peroxisome proliferator-activated receptor γ. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33 Suppl 1:75-85. [PMID: 30085373 PMCID: PMC6367069 DOI: 10.1002/rcm.8258] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 06/18/2018] [Accepted: 07/29/2018] [Indexed: 05/09/2023]
Abstract
RATIONALE The most frequently occurring phthalate, di(2-ethylhexyl) phthalate (DEHP), causes adverse effects on glucose homeostasis and insulin sensitivity in several cell models and epidemiological studies. However, thus far, there is no information available on the molecular interaction of phthalates and one of the key regulators of the metabolism, the peroxisome proliferator-activated receptor gamma (PPARγ). Since the endogenous ligand of PPARγ, 15-deoxy-delta-12,14-prostaglandin J2 (15Δ-PGJ2 ), features structural similarity to DEHP and its main metabolites produced in human hepatic metabolism, mono(2-ethylhexyl) phthalate (MEHP) and mono(2-ethyl-5-oxohexyl) phthalate (MEOHP), we tested the hypothesis of direct interactions between PPARγ and DEHP or its transformation products. METHODS Hydrogen/deuterium exchange mass spectrometry (HDX-MS) and docking were conducted to obtain structural insights into the interactions and surface plasmon resonance (SPR) analysis to reveal information about binding levels. To confirm the activation of PPARγ upon ligand binding on the cellular level, the GeneBLAzer® bioassay was performed. RESULTS HDX-MS and SPR analyses demonstrated that the metabolites MEHP and MEOHP, but not DEHP itself, bind to the ligand binding pocket of PPARγ. This binding leads to typical activation-associated conformational changes, as observed with its endogenous ligand 15Δ-PGJ2 . Furthermore, the reporter gene assay confirmed productive interaction. DEHP was inactive up to a concentration of 14 μM, while the metabolites MEHP and MEOHP were active at low micromolar concentrations. CONCLUSIONS In summary, this study gives structural insights into the direct interaction of PPARγ with MEHP and MEOHP and shows that the DEHP transformation products may modulate the lipid metabolism through PPARγ pathways.
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Affiliation(s)
- Isabel Kratochvil
- Department of Molecular Systems Biology, UFZ, Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318 Leipzig, Germany
| | - Tommy Hofmann
- Department of Molecular Systems Biology, UFZ, Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318 Leipzig, Germany
| | - Sandra Rother
- Institute of Materials Science, Max Bergmann Center of Biomaterials, TU Dresden, Budapester Straße 27, 01069 Dresden, Germany
| | - Rita Schlichting
- Department of Cell Toxicology, UFZ, Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318 Leipzig, Germany
| | - Rocco Moretti
- Center for Structural Biology, Vanderbilt University, Nashville, TN 37212, USA
| | - Dieter Scharnweber
- Institute of Materials Science, Max Bergmann Center of Biomaterials, TU Dresden, Budapester Straße 27, 01069 Dresden, Germany
| | - Vera Hintze
- Institute of Materials Science, Max Bergmann Center of Biomaterials, TU Dresden, Budapester Straße 27, 01069 Dresden, Germany
| | - Beate I. Escher
- Department of Cell Toxicology, UFZ, Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318 Leipzig, Germany
| | - Jens Meiler
- Center for Structural Biology, Vanderbilt University, Nashville, TN 37212, USA
| | - Stefan Kalkhof
- Department of Molecular Systems Biology, UFZ, Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318 Leipzig, Germany
| | - Martin von Bergen
- Department of Molecular Systems Biology, UFZ, Helmholtz-Centre for Environmental Research, Permoserstraße 15, 04318 Leipzig, Germany
- Institute of Biochemistry, Leipzig University, Brüderstraße 34, 04103 Leipzig, Germany
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Buchner EM, Happel O, Schmidt CK, Scheurer M, Schmutz B, Kramer M, Knauer M, Gartiser S, Hollert H. Approach for analytical characterization and toxicological assessment of ozonation products in drinking water on the example of acesulfame. WATER RESEARCH 2019; 153:357-368. [PMID: 30763901 DOI: 10.1016/j.watres.2019.01.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 12/28/2018] [Accepted: 01/06/2019] [Indexed: 06/09/2023]
Abstract
The monitoring and control of drinking water quality is generally important as it significantly contributes to the health of the population. In this context, particular attention has to be paid to the use of treatment techniques during drinking water treatment. It is known that the formation of reaction products (transformation products) has to be taken into account when oxidizing agents such as ozone are used. Different transformation products are classified as critical to health and require analytical examination. The risk assessment for previously unknown transformation products can be difficult as far as not all transformation products are present as single substances or the individual substances are not present in a sufficient high concentration or cannot be isolated from the original solution. The aim of this work is to show exemplarily the identification and quantification of ozonation products (OPs) after ozonation and their toxicological characterization, using the artificial sweetener acesulfame. It was shown that OPs can be fully characterized using ion chromatography in combination with different detection systems. A major OP could be recovered as a pure substance by crystallization and direct genotoxicological testing was possible without previous enrichment processes. Acesulfame samples of different concentrations in ultrapure and in drinking water after ozonation were tested in several genotoxicity tests. These tests revealed genotoxic effects of acesulfame after ozonation in ultrapure water in several genotoxicological test systems (micronucleus test, umu test, Ames-fluctuation-test and comet assay). In contrast, the crystallized ozonation product OP168 did not show any positive effects. Therefore, it seems likely that the observed effect was caused by the second major product OP170. However, a sufficiently large amount of analytically pure substance OP170 could not be obtained. It was also shown that the rate of the OP170 formation in drinking water is significantly lower than in ultrapure water and that ozonation in drinking water did not induce genotoxic effects.
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Affiliation(s)
- Eva-Maria Buchner
- Water Laboratory, RheinEnergie AG, Parkgürtel 24, 50823, Köln, Germany; Department of Ecosystem Analysis, Institute for Environmental Research, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany.
| | - Oliver Happel
- DVGW-Technologiezentrum Wasser (TZW), Karlsruher Straße 84, 76139, Karlsruhe, Germany
| | - Carsten K Schmidt
- Water Laboratory, RheinEnergie AG, Parkgürtel 24, 50823, Köln, Germany
| | - Marco Scheurer
- DVGW-Technologiezentrum Wasser (TZW), Karlsruher Straße 84, 76139, Karlsruhe, Germany
| | - Beat Schmutz
- DVGW-Technologiezentrum Wasser (TZW), Karlsruher Straße 84, 76139, Karlsruhe, Germany
| | - Meike Kramer
- Water Laboratory, RheinEnergie AG, Parkgürtel 24, 50823, Köln, Germany
| | - Martina Knauer
- Hydrotox GmbH, Bötzinger Straße 29, 79111, Freiburg i.Br, Germany
| | - Stefan Gartiser
- Hydrotox GmbH, Bötzinger Straße 29, 79111, Freiburg i.Br, Germany
| | - Henner Hollert
- Department of Ecosystem Analysis, Institute for Environmental Research, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany.
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Leusch FDL, Neale PA, Busetti F, Card M, Humpage A, Orbell JD, Ridgway HF, Stewart MB, van de Merwe JP, Escher BI. Transformation of endocrine disrupting chemicals, pharmaceutical and personal care products during drinking water disinfection. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 657:1480-1490. [PMID: 30677914 DOI: 10.1016/j.scitotenv.2018.12.106] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/05/2018] [Accepted: 12/08/2018] [Indexed: 06/09/2023]
Abstract
Pharmaceuticals and personal care products (PPCPs) and endocrine disrupting compounds (EDCs) are frequently detected in drinking water sources. This raises concerns about the formation of potentially more toxic transformation products (TPs) after drinking water disinfection. This study applied a combination of computational and experimental methods to investigate the biological activity of eight EDCs and PPCPs commonly detected in source waters (acetaminophen, bisphenol A, carbamazepine, estrone, 17α-ethinylestradiol, gemfibrozil, naproxen and triclosan) before and after disinfection. Using a Stepped Forced Molecular Dynamics (SFMD) method, we detected 911 unique TPs, 36% of which have been previously reported in the scientific literature. We calculated the likelihood that TPs would cause damage to biomolecules or DNA relative to the parent compound based on lipophilicity and the occurrence of structural alerts, and applied two Quantitative Structure-Activity Relationship (QSAR) tools to predict toxicity via receptor-mediated effects. In parallel, batch experiments were performed with three disinfectants, chlorine, chlorine dioxide and chloramine. After solid-phase extraction, the resulting TP mixtures were analyzed by chemical analysis and a battery of eleven in vitro bioassays covering a variety of endpoints. The laboratory results were in good agreement with the predictions. Overall, the combination of computational and experimental chemistry and toxicity methods used in this study suggest that disinfection of the studied EDCs and PPCPs will produce a large number of TPs, which are unlikely to increase specific toxicity (e.g., endocrine activity), but may result in increased reactive and non-specific toxicity.
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Affiliation(s)
- Frederic D L Leusch
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, Qld 4222, Australia.
| | - Peta A Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, Qld 4222, Australia
| | - Francesco Busetti
- Curtin Water Quality Research Centre, Curtin University, GPO Box U1987, Perth, WA 6845, Australia; School of Science, Edith Cowan University, Joondalup, WA 6027, Australia
| | - Marcella Card
- The University of Queensland, Queensland Alliance for Environmental Health Sciences (QAEHS), Woolloongabba, Qld 4102, Australia
| | - Andrew Humpage
- Australian Water Quality Centre, SA Water, Adelaide, SA, Australia
| | - John D Orbell
- Institute for Sustainable Industries & Livable Cities (ISILC), College of Engineering & Science, Victoria University, Melbourne, Vic, Australia
| | | | - Matthew B Stewart
- Institute for Sustainable Industries & Livable Cities (ISILC), College of Engineering & Science, Victoria University, Melbourne, Vic, Australia
| | - Jason P van de Merwe
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, Qld 4222, Australia
| | - Beate I Escher
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, Qld 4222, Australia; The University of Queensland, Queensland Alliance for Environmental Health Sciences (QAEHS), Woolloongabba, Qld 4102, Australia; UFZ - Helmholtz Centre for Environmental Research, Cell Toxicology, 04318 Leipzig, Germany
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125
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Comparative analysis of toxicity reduction of wastewater in twelve industrial park wastewater treatment plants based on battery of toxicity assays. Sci Rep 2019; 9:3751. [PMID: 30842527 PMCID: PMC6403317 DOI: 10.1038/s41598-019-40154-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 02/08/2019] [Indexed: 12/20/2022] Open
Abstract
Wastewater treatment plants (WWTPs) in industrial parks provide centralized treatment for industrial and domestic wastewater. However, the information on toxicity reduction of wastewater and its correlation with treatment process in industrial park is limited. This study compared the toxicity reduction of wastewater in 12 industrial park WWTPs based on battery of toxicity assays. Nine toxic endpoints involving microorganism, phytoplankton, zooplankton, plant and human cell lines were applied. All the influents of WWTPs induced high toxicities, which were significantly reduced after the treatments from 7 of the studied WWTPs. However, the effluents of five WWTPs induced higher toxicity in one or more toxic endpoints compared to the influents. This study also found that most of anaerobic-anoxic-oxic (A2/O)-based processes had good removal efficiency of wastewater toxicity, while the sequencing batch reactor (SBR)-based processes had the lowest removal efficiency. Moreover, low correlation coefficients were obtained among all toxic endpoints, indicating that battery of toxicity assays was necessary to completely characterize the toxicity and risk of wastewater in industrial parks. This study shed new lights to the toxicity reduction of wastewater and its correlation with treatment process, which is very useful for the design, management and operation of WWTPs in industrial parks.
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Pedrazzani R, Bertanza G, Brnardić I, Cetecioglu Z, Dries J, Dvarionienė J, García-Fernández AJ, Langenhoff A, Libralato G, Lofrano G, Škrbić B, Martínez-López E, Meriç S, Pavlović DM, Papa M, Schröder P, Tsagarakis KP, Vogelsang C. Opinion paper about organic trace pollutants in wastewater: Toxicity assessment in a European perspective. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 651:3202-3221. [PMID: 30463169 DOI: 10.1016/j.scitotenv.2018.10.027] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 09/30/2018] [Accepted: 10/02/2018] [Indexed: 06/09/2023]
Affiliation(s)
- Roberta Pedrazzani
- Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze, 38 and University Research Center "Integrated Models for Prevention and Protection in Environmental and Occupational Health", University of Brescia, 25123 Brescia, Italy.
| | - Giorgio Bertanza
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze, 43 and University Research Center "Integrated Models for Prevention and Protection in Environmental and Occupational Health", University of Brescia, 25123, Italy.
| | - Ivan Brnardić
- Faculty of Metallurgy, University of Zagreb, Aleja narodnih heroja 3, 44103 Sisak, Croatia.
| | - Zeynep Cetecioglu
- Department of Chemical Engineering and Technology, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden.
| | - Jan Dries
- Faculty of Applied Engineering, University of Antwerp, Salesianenlaan 90, 2660 Antwerp, Belgium.
| | - Jolanta Dvarionienė
- Kaunas University of Technology, Institute of Environmental Engineering, Gedimino str. 50, 44239 Kaunas, Lithuania.
| | - Antonio J García-Fernández
- Department of Toxicology, Faculty of Veterinary Medicine, University of Murcia, 30100, Campus of Espinardo, Spain.
| | - Alette Langenhoff
- Department of Environmental Technology, Wageningen University & Research, Bornse Weilanden 9, 6708, WG, Wageningen, the Netherlands.
| | - Giovanni Libralato
- Department of Biology, University of Naples Federico II, Via Cinthia ed. 7, 80126 Naples, Italy.
| | - Giusy Lofrano
- Department of Chemistry and Biology "A. Zambelli", University of Salerno, Via Giovanni Paolo II, 132-84084 Fisciano, Italy.
| | - Biljana Škrbić
- Faculty of Technology, University of Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia.
| | - Emma Martínez-López
- Department of Toxicology, Faculty of Veterinary Medicine, University of Murcia, 30100, Campus of Espinardo, Spain.
| | - Süreyya Meriç
- Çorlu Engineering Faculty, Environmental Engineering Department, Namik Kemal University, Çorlu, 59860, Tekirdağ, Turkey.
| | - Dragana Mutavdžić Pavlović
- Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia.
| | - Matteo Papa
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze, 43 and University Research Center "Integrated Models for Prevention and Protection in Environmental and Occupational Health", University of Brescia, 25123, Italy.
| | - Peter Schröder
- Helmholtz-Center for Environmental Health GmbH, Ingolstaedter Landstr. 1, 85764 Neuherberg, Germany.
| | - Konstantinos P Tsagarakis
- Department of Environmental Engineering, Democritus University of Thrace, Vas. Sofias 12, 67100 Xanthi, Greece.
| | - Christian Vogelsang
- Norwegian Institute for Water Research, Gaustadalleen 21, 0349 Oslo, Norway.
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Blackwell BR, Ankley GT, Bradley PM, Houck KA, Makarov SS, Medvedev AV, Swintek J, Villeneuve DL. Potential Toxicity of Complex Mixtures in Surface Waters from a Nationwide Survey of United States Streams: Identifying in Vitro Bioactivities and Causative Chemicals. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:973-983. [PMID: 30548063 PMCID: PMC6467772 DOI: 10.1021/acs.est.8b05304] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
While chemical analysis of contaminant mixtures remains an essential component of environmental monitoring, bioactivity-based assessments using in vitro systems increasingly are used in the detection of biological effects. Historically, in vitro assessments focused on a few biological pathways, for example, aryl hydrocarbon receptor (AhR) or estrogen receptor (ER) activities. High-throughput screening (HTS) technologies have greatly increased the number of biological targets and processes that can be rapidly assessed. Here we screened extracts of surface waters from a nationwide survey of United States streams for bioactivities associated with 69 different end points using two multiplexed HTS assays. Bioactivity of extracts from 38 streams was evaluated and compared with concentrations of over 700 analytes to identify chemicals contributing to observed effects. Eleven primary biological end points were detected. Pregnane X receptor (PXR) and AhR-mediated activities were the most commonly detected. Measured chemicals did not completely account for AhR and PXR responses. Surface waters with AhR and PXR effects were associated with low intensity, developed land cover. Likewise, elevated bioactivities frequently associated with wastewater discharges included endocrine-related end points ER and glucocorticoid receptor. These results underscore the value of bioassay-based monitoring of environmental mixtures for detecting biological effects that could not be ascertained solely through chemical analyses.
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Affiliation(s)
- Brett R. Blackwell
- US EPA, Mid-Continent Ecology Division, 6201 Congdon Blvd, Duluth, MN, USA 55804
- Corresponding author: 6201 Congdon Blvd, Duluth, MN 55804; ; T: (218) 529-5078; Fax: (218) 529-5003
| | - Gerald T. Ankley
- US EPA, Mid-Continent Ecology Division, 6201 Congdon Blvd, Duluth, MN, USA 55804
| | - Paul M. Bradley
- US Geological Survey, South Atlantic Water Science Center, 720 Gracern Rd, Columbia, SC, USA 29210
| | - Keith A. Houck
- US EPA, National Center for Computational Toxicology, 109 T.W. Alexander Dr, Research Triangle Park, NC, USA 27711
| | | | | | - Joe Swintek
- Badger Technical Services, 6201 Congdon Blvd, Duluth, MN, USA 55804
| | - Daniel L. Villeneuve
- US EPA, Mid-Continent Ecology Division, 6201 Congdon Blvd, Duluth, MN, USA 55804
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Li H, Yi X, Cheng F, Tong Y, Mehler WT, You J. Identifying Organic Toxicants in Sediment Using Effect-Directed Analysis: A Combination of Bioaccessibility-Based Extraction and High-Throughput Midge Toxicity Testing. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:996-1003. [PMID: 30585062 DOI: 10.1021/acs.est.8b05633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Toxicity identification evaluation (TIE) and effect-directed analysis (EDA) were integrated to diagnose toxicity drivers in a complex system, such as sediment. In TIE manipulation, XAD resin was utilized as an amending agent for characterizing organic toxicants, which also facilitate a large-volume bioaccessibility-based extraction for EDA purposes. Both raw sediments in TIE and extract fractions in EDA were tested with Chironomus dilutus for toxicity using whole-sediment testing and a high-throughput microplate assay. This allowed for a direct link between whole-sediment TIE and EDA, which strongly strengthened the characterization and identification of toxicants. Sediments amended with XAD resin, as part of the TIE, significantly reduced midge mortality compared with unamended sediments, suggesting that organics were one class of main toxicants. On the basis of bioaccessible concentrations in sediment measured by XAD extraction, a group of previously unidentified contaminants, synthetic polycyclic musks (versalide, tonalide, and galaxolide), were found to explain 32-73% of the observed toxicity in test sediments. Meanwhile, three pyrethroids contributed to an additional 17-35% of toxicity. Surprisingly, the toxicity contribution of musks and pyrethroids reached 58-442 and 56-1625%, respectively, based on total sediment concentrations measured by exhaustive extraction. This suggested that total sediment concentrations significantly overestimated toxicity and that bioavailability should be considered in toxicity identification. Identifying nontarget toxicants sheds a light on application of the integrated TIE and EDA method in defining causality in a complex environment.
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Affiliation(s)
- Huizhen Li
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
| | - Xiaoyi Yi
- State Key Laboratory of Organic Geochemistry , Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , Guangzhou 510640 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Fei Cheng
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
- State Key Laboratory of Organic Geochemistry , Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , Guangzhou 510640 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yujun Tong
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
| | - W Tyler Mehler
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
- Department of Biological Sciences , University of Alberta , Edmonton , Alberta T5G 2L6 , Canada
| | - Jing You
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
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129
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Villeneuve DL, Coady K, Escher BI, Mihaich E, Murphy CA, Schlekat T, Garcia-Reyero N. High-throughput screening and environmental risk assessment: State of the science and emerging applications. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2019; 38:12-26. [PMID: 30570782 PMCID: PMC6698360 DOI: 10.1002/etc.4315] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 08/26/2018] [Accepted: 11/09/2018] [Indexed: 05/20/2023]
Abstract
In 2007 the United States National Research Council (NRC) published a vision for toxicity testing in the 21st century that emphasized the use of in vitro high-throughput screening (HTS) methods and predictive models as an alternative to in vivo animal testing. In the present study we examine the state of the science of HTS and the progress that has been made in implementing and expanding on the NRC vision, as well as challenges to implementation that remain. Overall, significant progress has been made with regard to the availability of HTS data, aggregation of chemical property and toxicity information into online databases, and the development of various models and frameworks to support extrapolation of HTS data. However, HTS data and associated predictive models have not yet been widely applied in risk assessment. Major barriers include the disconnect between the endpoints measured in HTS assays and the assessment endpoints considered in risk assessments as well as the rapid pace at which new tools and models are evolving in contrast with the slow pace at which regulatory structures change. Nonetheless, there are opportunities for environmental scientists and policymakers alike to take an impactful role in the ongoing development and implementation of the NRC vision. Six specific areas for scientific coordination and/or policy engagement are identified. Environ Toxicol Chem 2019;38:12-26. Published 2018 Wiley Periodicals Inc. on behalf of SETAC. This article is a US government work and, as such, is in the public domain in the United States of America.
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Affiliation(s)
- Daniel L. Villeneuve
- U.S. Environmental Protection Agency, Mid-Continent Ecology Division, Duluth, MN, USA
- Address correspondence to: Daniel L. Villeneuve, US EPA Mid-Continent Ecology Division, 6201 Congdon Blvd, Duluth, MN, 55804, T: 218-529-5217, F: 218-529-5003,
| | - Katie Coady
- Toxicology and Environmental Research and Consulting, The Dow Chemical Company, Midland, MI, USA
| | - Beate I. Escher
- Hemholtz Centre for Environmental Research – UFZ, Leipzig, Germany
| | - Ellen Mihaich
- Environmental and Regulatory Resources (ER), Durham, NC, USA
| | - Cheryl A. Murphy
- Michigan State University, Fisheries and Wildlife, Lymann Briggs College, East Lansing, MI, USA
| | - Tamar Schlekat
- Society of Environmental Toxicology and Chemistry, Durham, NC, USA
| | - Natàlia Garcia-Reyero
- Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, MS, USA
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130
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Jahnke A, Sobek A, Bergmann M, Bräunig J, Landmann M, Schäfer S, Escher BI. Emerging investigator series: effect-based characterization of mixtures of environmental pollutants in diverse sediments. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2018; 20:1667-1679. [PMID: 30346461 DOI: 10.1039/c8em00401c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study investigated whether cell-based bioassays were suitable to characterize profiles of mixture effects of hydrophobic pollutants in multiple sediments covering remote Arctic and tropical sites to highly populated sites in Europe and Australia. The total contamination was determined after total solvent extraction and the bioavailable contamination after silicone-based passive equilibrium sampling. In addition to cytotoxicity, we observed specific responses in cell-based reporter gene bioassays: activation of metabolic enzymes (arylhydrocarbon receptor: AhR, peroxisome proliferator activated receptor gamma: PPARγ) and adaptive stress responses (oxidative stress response: AREc32). No mixture effects were found for effects on the estrogen, androgen, progesterone and glucocorticoid receptors, or they were masked by cytotoxicity. The bioanalytical equivalent concentrations (BEQ) spanned several orders of magnitude for each bioassay. The bioavailable BEQs (passive equilibrium sampling) typically were 10-100 times and up to 420 times lower than the total BEQ (solvent extraction) for the AhR and AREc32 assays, indicating that the readily desorbing fraction of the bioactive chemicals was substantially lower than the fraction bound strongly to the sediment sorptive phases. Contrarily, the bioavailable BEQ in the PPARγ assay was within a factor of five of the total BEQ. We identified several hotspots of contamination in Europe and established background contamination levels in the Arctic and Australia.
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Affiliation(s)
- Annika Jahnke
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, DE-04318 Leipzig, Germany.
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131
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Hamers T, Legradi J, Zwart N, Smedes F, de Weert J, van den Brandhof EJ, van de Meent D, de Zwart D. Time-Integrative Passive sampling combined with TOxicity Profiling (TIPTOP): an effect-based strategy for cost-effective chemical water quality assessment. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 64:48-59. [PMID: 30296657 DOI: 10.1016/j.etap.2018.09.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 08/27/2018] [Accepted: 09/14/2018] [Indexed: 06/08/2023]
Abstract
This study aimed at demonstrating that effect-based monitoring with passive sampling followed by toxicity profiling is more protective and cost-effective than the current chemical water quality assessment strategy consisting of compound-by-compound chemical analysis of selected substances in grab samples. Passive samplers were deployed in the Dutch river delta and in WWTP effluents. Their extracts were tested in a battery of bioassays and chemically analyzed to obtain toxicity and chemical profiles, respectively. Chemical concentrations in water were retrieved from publicly available databases. Seven different strategies were used to interpret the chemical and toxicity profiles in terms of ecological risk. They all indicated that the river sampling locations were relatively clean. Chemical-based monitoring resulted for many substances in measurements below detection limit and could only explain <20% of the observed in vitro toxicity. Effect-based monitoring yielded more informative conclusions as it allowed for ranking the sampling sites and for estimating a margin-of-exposure towards chronic effect ranges. Effect-based monitoring was also cheaper and more cost-effective (i.e. yielding more information per euro spent). Based on its identified strengths, weaknesses, opportunities, and threats (SWOT), a future strategy for effect-based monitoring has been proposed.
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Affiliation(s)
- Timo Hamers
- Department Environment & Health (E&H), Vrije Universiteit Amsterdam, The Netherlands.
| | - Jessica Legradi
- Department Environment & Health (E&H), Vrije Universiteit Amsterdam, The Netherlands
| | - Nick Zwart
- Department Environment & Health (E&H), Vrije Universiteit Amsterdam, The Netherlands
| | - Foppe Smedes
- Deltares, Utrecht, The Netherlands; Recetox - Masaryk University, Brno, Czech Republic
| | | | | | - Dik van de Meent
- National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands; Radboud University Nijmegen, The Netherlands
| | - Dick de Zwart
- National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands; DdZ Ecotox, Odijk, The Netherlands
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132
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Neale PA, Leusch FDL, Escher BI. What is driving the NF-κB response in environmental water extracts? CHEMOSPHERE 2018; 210:645-652. [PMID: 30031348 DOI: 10.1016/j.chemosphere.2018.07.052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 07/09/2018] [Accepted: 07/10/2018] [Indexed: 06/08/2023]
Abstract
In vitro bioassays are increasingly applied for water quality monitoring, with assays indicative of adaptive stress responses commonly included in test batteries. The NF-κB assay is responsive to surface water and wastewater extracts, but the causative compounds are unknown and micropollutants typically found in water do not activate the NF-κB assay. The current study aimed to investigate if co-extracted organic matter and/or endotoxins could cause the NF-κB response in surface water extracts. The effect of model bacterial lipopolysaccharides (LPS) and dissolved organic carbon (DOC) was evaluated in the NF-κB assay both before and after solid-phase extraction (SPE), with 7% effect recovery for LPS and between 7 and 52% effect recovery for DOC observed. The NF-κB response, endotoxin activity, micropollutant concentration and total organic carbon concentration was measured in four surface water extracts. All water extracts showed a response in the NF-κB assay, but the detected micropollutants could not explain the effect. Comparison of predicted bioanalytical equivalent concentrations based on micropollutant, DOC and endotoxin concentrations in surface water with experimental bioanalytical equivalent concentrations suggest that co-extracted endotoxins are the most important drivers of the observed effect, with DOC only having a minor contribution. While in vitro bioassays typically detect mixtures of organic micropollutants, the current study shows that the NF-κB assay can integrate the effects of co-extracted endotoxins. Given that endotoxins can pose a risk for human health, the NF-κB assay is a valuable inclusion in bioanalytical test batteries used for water quality monitoring.
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Affiliation(s)
- Peta A Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport QLD 4222, Australia; The University of Queensland, Queensland Alliance for Environmental Health Sciences (QAEHS), Woolloongabba QLD 4102, Australia.
| | - Frederic D L Leusch
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport QLD 4222, Australia
| | - Beate I Escher
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport QLD 4222, Australia; The University of Queensland, Queensland Alliance for Environmental Health Sciences (QAEHS), Woolloongabba QLD 4102, Australia; UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany; Eberhard Karls University Tübingen, Environmental Toxicology, Center for Applied Geoscience, 72074 Tübingen, Germany
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133
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Bopp SK, Barouki R, Brack W, Dalla Costa S, Dorne JLCM, Drakvik PE, Faust M, Karjalainen TK, Kephalopoulos S, van Klaveren J, Kolossa-Gehring M, Kortenkamp A, Lebret E, Lettieri T, Nørager S, Rüegg J, Tarazona JV, Trier X, van de Water B, van Gils J, Bergman Å. Current EU research activities on combined exposure to multiple chemicals. ENVIRONMENT INTERNATIONAL 2018; 120:544-562. [PMID: 30170309 PMCID: PMC6192826 DOI: 10.1016/j.envint.2018.07.037] [Citation(s) in RCA: 146] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/25/2018] [Accepted: 07/26/2018] [Indexed: 05/20/2023]
Abstract
Humans and wildlife are exposed to an intractably large number of different combinations of chemicals via food, water, air, consumer products, and other media and sources. This raises concerns about their impact on public and environmental health. The risk assessment of chemicals for regulatory purposes mainly relies on the assessment of individual chemicals. If exposure to multiple chemicals is considered in a legislative framework, it is usually limited to chemicals falling within this framework and co-exposure to chemicals that are covered by a different regulatory framework is often neglected. Methodologies and guidance for assessing risks from combined exposure to multiple chemicals have been developed for different regulatory sectors, however, a harmonised, consistent approach for performing mixture risk assessments and management across different regulatory sectors is lacking. At the time of this publication, several EU research projects are running, funded by the current European Research and Innovation Programme Horizon 2020 or the Seventh Framework Programme. They aim at addressing knowledge gaps and developing methodologies to better assess chemical mixtures, by generating and making available internal and external exposure data, developing models for exposure assessment, developing tools for in silico and in vitro effect assessment to be applied in a tiered framework and for grouping of chemicals, as well as developing joint epidemiological-toxicological approaches for mixture risk assessment and for prioritising mixtures of concern. The projects EDC-MixRisk, EuroMix, EUToxRisk, HBM4EU and SOLUTIONS have started an exchange between the consortia, European Commission Services and EU Agencies, in order to identify where new methodologies have become available and where remaining gaps need to be further addressed. This paper maps how the different projects contribute to the data needs and assessment methodologies and identifies remaining challenges to be further addressed for the assessment of chemical mixtures.
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Key Words
- ao, adverse outcome
- aop, adverse outcome pathway
- bmd, benchmark dose modelling
- bqe, biological quality element
- ca, concentration addition
- cag, cumulative assessment group
- cmep, chemical monitoring and emerging pollutants
- cra, cumulative risk assessment
- dart, developmental and reproductive toxicity
- deb, dynamic energy budget
- ebt, effect-based tools
- edc, endocrine disrupting chemical
- eqs, environmental quality standard
- hbm, human biomonitoring
- ia, independent action
- iata, integrated approach to testing and assessment
- ipra, integrated probabilistic risk assessment
- ipsc, induced pluripotent stem cells
- loe, lines of evidence
- mcr, maximum cumulative ratio
- mcra, monte carlo risk assessment tool
- mec, measured exposure concentration
- moa, mode of action
- mra, mixture risk assessment
- msfd, marine strategy framework directive
- nam, new approach methodology
- pbtk, physiologically based toxicokinetic (model)
- pec, predicted exposure concentration
- pnec, predicted no effect concentration
- qsar, quantitative structure activity relationship
- rdt, repeated dose systemic toxicity
- tk, toxicokinetic
- smri, similar mixture risk indicator
- syrina, systematic review and integrated assessment
- ttc, threshold of toxicological concern
- wfd, water framework directive
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Affiliation(s)
- Stephanie K Bopp
- European Commission, Directorate General Joint Research Centre, Directorate F - Health, Consumers and Reference Materials, Ispra, Italy.
| | - Robert Barouki
- INSERM UMR-S 1124, Université Paris Descartes, Paris, France.
| | - Werner Brack
- Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany.
| | - Silvia Dalla Costa
- European Commission, Directorate General Joint Research Centre, Directorate B - Growth and Innovation, Ispra, Italy.
| | - Jean-Lou C M Dorne
- Scientific Committee and Emerging Risks Unit, European Food Safety Authority (EFSA), Parma, Italy.
| | - Paula E Drakvik
- Swetox, Karolinska Institutet, Unit of Toxicology Sciences, Södertälje, Sweden.
| | - Michael Faust
- Faust & Backhaus Environmental Consulting, Bremen, Germany.
| | - Tuomo K Karjalainen
- European Commission, Directorate General Research and Innovation, Directorate E - Health, Brussels, Belgium.
| | - Stylianos Kephalopoulos
- European Commission, Directorate General Joint Research Centre, Directorate F - Health, Consumers and Reference Materials, Ispra, Italy.
| | - Jacob van Klaveren
- National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands.
| | | | - Andreas Kortenkamp
- Institute for Environment, Health and Societies, Brunel University, Uxbridge, United Kingdom.
| | - Erik Lebret
- National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands; Institute of Risk Assessment Sciences - IRAS, Utrecht University, Utrecht, the Netherlands.
| | - Teresa Lettieri
- European Commission, Directorate General Joint Research Centre, Directorate D - Sustainable Resources, Ispra, Italy.
| | - Sofie Nørager
- European Commission, Directorate General Research and Innovation, Directorate E - Health, Brussels, Belgium.
| | - Joëlle Rüegg
- Swetox, Karolinska Institutet, Unit of Toxicology Sciences, Södertälje, Sweden.
| | - Jose V Tarazona
- Pesticides Unit, European Food Safety Authority (EFSA), Parma, Italy.
| | - Xenia Trier
- European Environment Agency, Copenhagen, Denmark.
| | - Bob van de Water
- Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands.
| | | | - Åke Bergman
- Swetox, Karolinska Institutet, Unit of Toxicology Sciences, Södertälje, Sweden; School of Science and Technology, MTM, Örebro University, Örebro, Sweden.
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134
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Louisse J, Dingemans MML, Baken KA, van Wezel AP, Schriks M. Exploration of ToxCast/Tox21 bioassays as candidate bioanalytical tools for measuring groups of chemicals in water. CHEMOSPHERE 2018; 209:373-380. [PMID: 29935466 DOI: 10.1016/j.chemosphere.2018.06.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 05/14/2018] [Accepted: 06/07/2018] [Indexed: 06/08/2023]
Abstract
The present study explores the ToxCast/Tox21 database to select candidate bioassays as bioanalytical tools for measuring groups of chemicals in water. To this aim, the ToxCast/Tox21 database was explored for bioassays that detect polycyclic aromatic hydrocarbons (PAHs), aromatic amines (AAs), (chloro)phenols ((C)Ps) and halogenated aliphatic hydrocarbons (HAliHs), which are included in the European and/or Dutch Drinking Water Directives. Based on the analysis of the availability and performance of bioassays included in the database, we concluded that several bioassays are suitable as bioanalytical tools for assessing the presence of PAHs and (C)Ps in drinking water sources. No bioassays were identified for AAs and HAliHs, due to the limited activity of these chemicals and/or the limited amount of data on these chemicals in the database. A series of bioassays was selected that measure molecular or cellular effects that are covered by bioassays currently in use for chemical water quality monitoring. Interestingly, also bioassays were selected that represent molecular or cellular effects that are not covered by bioassays currently applied. The usefulness of these newly identified bioassays as bioanalytical tools should be further evaluated in follow-up studies. Altogether, this study shows how exploration of the ToxCast/Tox21 database provides a series of candidate bioassays as bioanalytical tools for measuring groups of chemicals in water. This assessment can be performed for any group of chemicals of interest (if represented in the database), and may provide candidate bioassays that can be used to complement the currently applied bioassays for chemical water quality assessment.
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Affiliation(s)
- Jochem Louisse
- KWR Watercycle Research Institute, Groningenhaven 7, 3433 PE, Nieuwegein, the Netherlands.
| | - Milou M L Dingemans
- KWR Watercycle Research Institute, Groningenhaven 7, 3433 PE, Nieuwegein, the Netherlands
| | - Kirsten A Baken
- KWR Watercycle Research Institute, Groningenhaven 7, 3433 PE, Nieuwegein, the Netherlands
| | - Annemarie P van Wezel
- KWR Watercycle Research Institute, Groningenhaven 7, 3433 PE, Nieuwegein, the Netherlands; Copernicus Institute of Sustainable Development, Utrecht University, Heidelberglaan 2, 3584 CS, Utrecht, the Netherlands
| | - Merijn Schriks
- Vitens Drinking Water Company, 8019 BE, Zwolle, the Netherlands
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135
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Tousova Z, Oswald P, Slobodnik J, Blaha L, Muz M, Hu M, Brack W, Krauss M, Di Paolo C, Tarcai Z, Seiler TB, Hollert H, Koprivica S, Ahel M, Schollée JE, Hollender J, Suter MJF, Hidasi AO, Schirmer K, Sonavane M, Ait-Aissa S, Creusot N, Brion F, Froment J, Almeida AC, Thomas K, Tollefsen KE, Tufi S, Ouyang X, Leonards P, Lamoree M, Torrens VO, Kolkman A, Schriks M, Spirhanzlova P, Tindall A, Schulze T. Corrigendum to "European demonstration program on the effect-based and chemical identification and monitoring of organic pollutants in European surface waters" [Sci. Total Environ. 601-602 (2017) 1849-1868]. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 635:1620-1621. [PMID: 29739659 DOI: 10.1016/j.scitotenv.2018.04.356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Zuzana Tousova
- Environmental Institute (EI), Okruzna 784/42, 972 41 Kos, Slovak Republic; Masaryk University, Faculty of Science, RECETOX, Kamenice 753/5, 625 00 Brno, Czech Republic
| | - Peter Oswald
- Environmental Institute (EI), Okruzna 784/42, 972 41 Kos, Slovak Republic
| | - Jaroslav Slobodnik
- Environmental Institute (EI), Okruzna 784/42, 972 41 Kos, Slovak Republic
| | - Ludek Blaha
- Masaryk University, Faculty of Science, RECETOX, Kamenice 753/5, 625 00 Brno, Czech Republic
| | - Melis Muz
- UFZ Helmholtz-Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany; RWTH Aachen University, Inst. for Environmental Research (Biology V), Department of Ecosystem Analysis, Worringerweg 1, 52074 Aachen, Germany
| | - Meng Hu
- UFZ Helmholtz-Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany; RWTH Aachen University, Inst. for Environmental Research (Biology V), Department of Ecosystem Analysis, Worringerweg 1, 52074 Aachen, Germany
| | - Werner Brack
- UFZ Helmholtz-Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany; RWTH Aachen University, Inst. for Environmental Research (Biology V), Department of Ecosystem Analysis, Worringerweg 1, 52074 Aachen, Germany
| | - Martin Krauss
- UFZ Helmholtz-Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Carolina Di Paolo
- RWTH Aachen University, Inst. for Environmental Research (Biology V), Department of Ecosystem Analysis, Worringerweg 1, 52074 Aachen, Germany
| | - Zsolt Tarcai
- RWTH Aachen University, Inst. for Environmental Research (Biology V), Department of Ecosystem Analysis, Worringerweg 1, 52074 Aachen, Germany
| | - Thomas-Benjamin Seiler
- RWTH Aachen University, Inst. for Environmental Research (Biology V), Department of Ecosystem Analysis, Worringerweg 1, 52074 Aachen, Germany
| | - Henner Hollert
- RWTH Aachen University, Inst. for Environmental Research (Biology V), Department of Ecosystem Analysis, Worringerweg 1, 52074 Aachen, Germany
| | - Sanja Koprivica
- Rudjer Boskovic Institute, Bijenicka cesta 54, 10000 Zagreb, Croatia
| | - Marijan Ahel
- Rudjer Boskovic Institute, Bijenicka cesta 54, 10000 Zagreb, Croatia
| | - Jennifer E Schollée
- Eawag, Ueberlandstrasse 133, 8600 Dubendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland
| | - Juliane Hollender
- Eawag, Ueberlandstrasse 133, 8600 Dubendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland
| | - Marc J-F Suter
- Eawag, Ueberlandstrasse 133, 8600 Dubendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland
| | - Anita O Hidasi
- Eawag, Ueberlandstrasse 133, 8600 Dubendorf, Switzerland; EPF Lausanne, School of Architecture, Civil and Environmental Engineering, 1015 Lausanne, Switzerland
| | - Kristin Schirmer
- Eawag, Ueberlandstrasse 133, 8600 Dubendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland; EPF Lausanne, School of Architecture, Civil and Environmental Engineering, 1015 Lausanne, Switzerland
| | - Manoj Sonavane
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité ECOT, Parc ALATA - BP2, 60550 Verneuil-en-Halatte, France
| | - Selim Ait-Aissa
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité ECOT, Parc ALATA - BP2, 60550 Verneuil-en-Halatte, France
| | - Nicolas Creusot
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité ECOT, Parc ALATA - BP2, 60550 Verneuil-en-Halatte, France
| | - Francois Brion
- Institut National de l'Environnement Industriel et des Risques (INERIS), Unité ECOT, Parc ALATA - BP2, 60550 Verneuil-en-Halatte, France
| | - Jean Froment
- UFZ Helmholtz-Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany; Norwegian Institute for Water Research (NIVA), Ecotoxicology and Risk Assessment, Gaustadallèen 21, NO-0349 Oslo, Norway
| | - Ana Catarina Almeida
- Norwegian Institute for Water Research (NIVA), Ecotoxicology and Risk Assessment, Gaustadallèen 21, NO-0349 Oslo, Norway
| | - Kevin Thomas
- Norwegian Institute for Water Research (NIVA), Ecotoxicology and Risk Assessment, Gaustadallèen 21, NO-0349 Oslo, Norway; Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, 39 Keesels Road, Coopers Plains 4108, Australia
| | - Knut Erik Tollefsen
- Norwegian Institute for Water Research (NIVA), Ecotoxicology and Risk Assessment, Gaustadallèen 21, NO-0349 Oslo, Norway; Norwegian University of Life Sciences (NMBU), Faculty of Environmental Science & Technology, Dept. for Environmental Sciences, Post box 5003, N-1432 Ås, Norway
| | - Sara Tufi
- Vrije Universiteit Amsterdam, Department Environment & Health, De Boelelaan 1087, 1081 HV, Amsterdam, The Netherlands
| | - Xiyu Ouyang
- Vrije Universiteit Amsterdam, Department Environment & Health, De Boelelaan 1087, 1081 HV, Amsterdam, The Netherlands
| | - Pim Leonards
- Vrije Universiteit Amsterdam, Department Environment & Health, De Boelelaan 1087, 1081 HV, Amsterdam, The Netherlands
| | - Marja Lamoree
- Vrije Universiteit Amsterdam, Department Environment & Health, De Boelelaan 1087, 1081 HV, Amsterdam, The Netherlands
| | - Victoria Osorio Torrens
- KWR, Watercycle Research Institute, Department of Chemical Water, Quality and Health, P.O. Box 1072, 3430 BB Nieuwegein, The Netherlands
| | - Annemieke Kolkman
- KWR, Watercycle Research Institute, Department of Chemical Water, Quality and Health, P.O. Box 1072, 3430 BB Nieuwegein, The Netherlands
| | - Merijn Schriks
- KWR, Watercycle Research Institute, Department of Chemical Water, Quality and Health, P.O. Box 1072, 3430 BB Nieuwegein, The Netherlands; Vitens drinking water company, P.O Box 1205, 8001 BE Zwolle, The Netherlands
| | | | - Andrew Tindall
- WatchFrog S. A., 1 rue Pierre Fontaine, 91000 Evry, France
| | - Tobias Schulze
- UFZ Helmholtz-Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany.
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136
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Escher BI, Neale PA, Villeneuve DL. The advantages of linear concentration-response curves for in vitro bioassays with environmental samples. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2018; 37:2273-2280. [PMID: 29846006 PMCID: PMC6150494 DOI: 10.1002/etc.4178] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 04/29/2018] [Accepted: 05/18/2018] [Indexed: 05/17/2023]
Abstract
In vitro assays and high-throughput screening (HTS) tools are increasingly being employed as replacements for animal testing, but most concentration-response curves are still evaluated with models developed for animal testing. We argue that application of in vitro assays, particularly reporter gene assays, to environmental samples can benefit from a different approach to concentration-response modeling. First, cytotoxicity often occurs at higher concentrations, especially for weakly acting compounds and in complex environmental mixtures with many components. In these cases, specific effects can be masked by cytotoxicity. Second, for many HTS assays, low effect levels can be precisely quantified because of the low variability of controls in cell-based assays and the opportunity to run many concentrations and replicates when using high-density well-plate formats (e.g., 384 or more wells per plate). Hence, we recommend focusing concentration-response modeling on the lower portion of the concentration-response curve, which is approximately linear. Effect concentrations derived from low-effect level linear concentration-response models facilitate simple derivation of relative effect potencies and the correct application of mixture toxicity models in the calculation of bioanalytical equivalent concentrations. Environ Toxicol Chem 2018;37:2273-2280. © 2018 SETAC.
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Affiliation(s)
- Beate I Escher
- Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
- Eberhard Karls University Tübingen, Environmental Toxicology, Center for Applied Geosciences, Tübingen, Germany
| | - Peta A Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, Queensland, Australia
| | - Daniel L Villeneuve
- Mid-Continent Ecology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, US Environmental Protection Agency, Duluth, Minnesota
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137
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Lungu-Mitea S, Oskarsson A, Lundqvist J. Development of an oxidative stress in vitro assay in zebrafish (Danio rerio) cell lines. Sci Rep 2018; 8:12380. [PMID: 30120374 PMCID: PMC6098050 DOI: 10.1038/s41598-018-30880-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/06/2018] [Indexed: 12/22/2022] Open
Abstract
The nuclear factor erythroid 2-related factor 2 (Nrf2) is a key regulator of cellular defense against oxidative stress and correlated with classical toxicological endpoints. In vitro methods using fish cell lines for the assessment of aquatic toxicity are needed for mechanistic studies and as an alternative to in vivo. We describe an in vitro assay to study oxidative stress using zebrafish cell lines. Transfection efficiency of twelve commercially available transfection reagents were tested in the zebrafish cell lines ZFL, ZF4, and Pac2. The most efficient reagent for each cell line was selected for further experiments. Cells were transiently transfected with an Nrf2-responsive luciferase plasmid. The assay was tested using the oxidative stress inducing chemicals tertbutylhydroquinone, hydrogen peroxide, and sulforaphane. Of the transfected cell lines, ZF4 and ZFL showed higher sensitivity. The latter were used to study potential oxidative stress induced by pesticides (diazinon, deltamethrin, atrazine, metazachlor, terbutylazine, diuron). Besides known inducers, Nrf2 activity was also significantly induced by diazinon, deltametrin, diuron, and metazachlor. Activation of Nrf2 by metazachlor is a novel finding. The described assay could be a valuable tool for research in toxicology to study the stress response of both pure chemicals and environmental water samples.
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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.
| | - Agneta Oskarsson
- 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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138
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Arlos MJ, Parker WJ, Bicudo JR, Law P, Hicks KA, Fuzzen MLM, Andrews SA, Servos MR. Modeling the exposure of wild fish to endocrine active chemicals: Potential linkages of total estrogenicity to field-observed intersex. WATER RESEARCH 2018; 139:187-197. [PMID: 29649703 DOI: 10.1016/j.watres.2018.04.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/21/2018] [Accepted: 04/02/2018] [Indexed: 06/08/2023]
Abstract
Decades of studies on endocrine disruption have suggested the need to manage the release of key estrogens from municipal wastewater treatment plants (WWTP). However, the proposed thresholds are below the detection limits of most routine chemical analysis, thereby restricting the ability of watershed managers to assess the environmental exposure appropriately. In this study, we demonstrated the utility of a mechanistic model to address the data gaps on estrogen exposure. Concentrations of the prominent estrogenic contaminants in wastewaters (estrone, estradiol, and ethinylestradiol) were simulated in the Grand River in southern Ontario (Canada) for nine years, including a period when major WWTP upgrades occurred. The predicted concentrations expressed as total estrogenicity (E2 equivalent concentrations) were contrasted to a key estrogenic response (i.e., intersex) in rainbow darter (Etheostoma caeruleum), a wild sentinel fish species. A predicted total estrogenicity in the river of ≥10 ng/L E2 equivalents was associated with high intersex incidence and severity, whereas concentrations <0.1 ng/L E2 equivalents were associated with minimal intersex expression. Exposure to a predicted river concentration of 0.4 ng/L E2 equivalents, the environmental quality standard (EQS) proposed by the European Union for estradiol, was associated with 34% (95% CI:30-38) intersex incidence and a very low severity score of 0.6 (95% CI:0.5-0.7). This exposure is not predicted to cause adverse effects in rainbow darter. The analyses completed in this study were only based on the predicted presence of three major estrogens (E1, E2, EE2), so caution must be exercised when interpreting the results. Nevertheless, this study illustrates the use of models for exposure assessment, especially when measured data are not available.
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Affiliation(s)
- Maricor J Arlos
- Department of Biology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
| | - Wayne J Parker
- Department of Civil and Environmental Engineering, University of Waterloo, ON, N2L 3G1, Canada
| | - José R Bicudo
- Region of Waterloo, Kitchener, Ontario, N2G 4J3, Canada
| | - Pam Law
- Region of Waterloo, Kitchener, Ontario, N2G 4J3, Canada
| | - Keegan A Hicks
- Department of Biology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - Meghan L M Fuzzen
- Department of Biology, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Susan A Andrews
- Department of Civil Engineering, University of Toronto, Toronto, ON, M5S 1S4, Canada
| | - Mark R Servos
- Department of Biology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
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139
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Fischer FC, Abele C, Droge STJ, Henneberger L, König M, Schlichting R, Scholz S, Escher BI. Cellular Uptake Kinetics of Neutral and Charged Chemicals in in Vitro Assays Measured by Fluorescence Microscopy. Chem Res Toxicol 2018; 31:646-657. [PMID: 29939727 DOI: 10.1021/acs.chemrestox.8b00019] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cellular uptake kinetics are key for understanding time-dependent chemical exposure in in vitro cell assays. Slow cellular uptake kinetics in relation to the total exposure time can considerably reduce the biologically effective dose. In this study, fluorescence microscopy combined with automated image analysis was applied for time-resolved quantification of cellular uptake of 10 neutral, anionic, cationic, and zwitterionic fluorophores in two reporter gene assays. The chemical fluorescence in the medium remained relatively constant during the 24-h assay duration, emphasizing that the proteins and lipids in the fetal bovine serum (FBS) supplemented to the assay medium represent a large reservoir of reversibly bound chemicals with the potential to compensate for chemical depletion by cell uptake, growth, and sorption to well materials. Hence FBS plays a role in stabilizing the cellular dose in a similar way as polymer-based passive dosing, here we term this process as serum-mediated passive dosing (SMPD). Neutral chemicals accumulated in the cells up to 12 times faster than charged chemicals. Increasing medium FBS concentrations accelerated uptake due to FBS-facilitated transport but led to lower cellular concentrations as a result of increased sorption to medium proteins and lipids. In vitro cell exposure results from the interaction of several extra- and intracellular processes, leading to variable and time-dependent exposure between different chemicals and assay setups. The medium FBS plays a crucial role for the thermodynamic equilibria as well as for the cellular uptake kinetics, hence influencing exposure. However, quantification of cellular exposure by an area under the curve (AUC) analysis illustrated that, for the evaluated bioassay setup, current in vitro exposure models that assume instantaneous equilibrium between medium and cells still reflect a realistic exposure because the AUC was typically reduced less than 20% compared to the cellular dose that would result from instantaneous equilibrium.
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Affiliation(s)
- Fabian C Fischer
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstraße 15 , 04318 Leipzig , Germany
| | - Cedric Abele
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstraße 15 , 04318 Leipzig , Germany
| | - Steven T J Droge
- Institute for Biodiversity and Ecosystem Dynamics , University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , Netherlands
| | - Luise Henneberger
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstraße 15 , 04318 Leipzig , Germany
| | - Maria König
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstraße 15 , 04318 Leipzig , Germany
| | - Rita Schlichting
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstraße 15 , 04318 Leipzig , Germany
| | - Stefan Scholz
- Department of Bioanalytical Ecotoxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstraße 15 , 04318 Leipzig , Germany
| | - Beate I Escher
- Department of Cell Toxicology , Helmholtz Centre for Environmental Research - UFZ , Permoserstraße 15 , 04318 Leipzig , Germany.,Environmental Toxicology, Centre for Applied Geoscience , Eberhard Karls University Tübingen , 72074 Tübingen , Germany
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140
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Carusi A, Davies MR, De Grandis G, Escher BI, Hodges G, Leung KMY, Whelan M, Willett C, Ankley GT. Harvesting the promise of AOPs: An assessment and recommendations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 628-629:1542-1556. [PMID: 30045572 PMCID: PMC5888775 DOI: 10.1016/j.scitotenv.2018.02.015] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/02/2018] [Accepted: 02/02/2018] [Indexed: 05/22/2023]
Abstract
The Adverse Outcome Pathway (AOP) concept is a knowledge assembly and communication tool to facilitate the transparent translation of mechanistic information into outcomes meaningful to the regulatory assessment of chemicals. The AOP framework and associated knowledgebases (KBs) have received significant attention and use in the regulatory toxicology community. However, it is increasingly apparent that the potential stakeholder community for the AOP concept and AOP KBs is broader than scientists and regulators directly involved in chemical safety assessment. In this paper we identify and describe those stakeholders who currently-or in the future-could benefit from the application of the AOP framework and knowledge to specific problems. We also summarize the challenges faced in implementing pathway-based approaches such as the AOP framework in biological sciences, and provide a series of recommendations to meet critical needs to ensure further progression of the framework as a useful, sustainable and dependable tool supporting assessments of both human health and the environment. Although the AOP concept has the potential to significantly impact the organization and interpretation of biological information in a variety of disciplines/applications, this promise can only be fully realized through the active engagement of, and input from multiple stakeholders, requiring multi-pronged substantive long-term planning and strategies.
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Affiliation(s)
- Annamaria Carusi
- Medical Humanities Sheffield, University of Sheffield, Medical School, Beech Hill Road, Sheffield S10 2RX, UK.
| | | | - Giovanni De Grandis
- Science, Technology, Engineering and Public Policy (STEaPP), Boston House, 36-37 Fitzroy Square, London W1T 6EY, UK.
| | - Beate I Escher
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany; Eberhard Karls University Tübingen, Environmental Toxicology, Centre for Applied Geosciences, 72074 Tübingen, Germany.
| | - Geoff Hodges
- Safety and Environmental Assurance Centre, Unilever, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK.
| | - Kenneth M Y Leung
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China.
| | - Maurice Whelan
- European Commission, Joint Research Centre (JRC), Ispra, Italy.
| | - Catherine Willett
- The Humane Society of the United States, 700 Professional Drive, Gaithersburg, MD, 20879, USA.
| | - Gerald T Ankley
- US Environmental Protection Agency, 6201 Congdon Blvd, Duluth, MN 55804, USA.
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141
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Escher BI, Aїt-Aїssa S, Behnisch PA, Brack W, Brion F, Brouwer A, Buchinger S, Crawford SE, Du Pasquier D, Hamers T, Hettwer K, Hilscherová K, Hollert H, Kase R, Kienle C, Tindall AJ, Tuerk J, van der Oost R, Vermeirssen E, Neale PA. Effect-based trigger values for in vitro and in vivo bioassays performed on surface water extracts supporting the environmental quality standards (EQS) of the European Water Framework Directive. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 628-629:748-765. [PMID: 29454215 DOI: 10.1016/j.scitotenv.2018.01.340] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/29/2018] [Accepted: 01/31/2018] [Indexed: 05/18/2023]
Abstract
Effect-based methods including cell-based bioassays, reporter gene assays and whole-organism assays have been applied for decades in water quality monitoring and testing of enriched solid-phase extracts. There is no common EU-wide agreement on what level of bioassay response in water extracts is acceptable. At present, bioassay results are only benchmarked against each other but not against a consented measure of chemical water quality. The EU environmental quality standards (EQS) differentiate between acceptable and unacceptable surface water concentrations for individual chemicals but cannot capture the thousands of chemicals in water and their biological action as mixtures. We developed a method that reads across from existing EQS and includes additional mixture considerations with the goal that the derived effect-based trigger values (EBT) indicate acceptable risk for complex mixtures as they occur in surface water. Advantages and limitations of various approaches to read across from EQS are discussed and distilled to an algorithm that translates EQS into their corresponding bioanalytical equivalent concentrations (BEQ). The proposed EBT derivation method was applied to 48 in vitro bioassays with 32 of them having sufficient information to yield preliminary EBTs. To assess the practicability and robustness of the proposed approach, we compared the tentative EBTs with observed environmental effects. The proposed method only gives guidance on how to derive EBTs but does not propose final EBTs for implementation. The EBTs for some bioassays such as those for estrogenicity are already mature and could be implemented into regulation in the near future, while for others it will still take a few iterations until we can be confident of the power of the proposed EBTs to differentiate good from poor water quality with respect to chemical contamination.
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Affiliation(s)
- Beate I Escher
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany; Eberhard Karls University Tübingen, Environmental Toxicology, Centre for Applied Geosciences, 72074 Tübingen, Germany; Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, QLD 4222, Australia; The University of Queensland, Queensland Alliance for Environmental Health Sciences (QAEHS), Brisbane, QLD 4108, Australia.
| | - Selim Aїt-Aїssa
- Institut National de l'Environnement Industriel et des Risques INERIS, Unité d'Ecotoxicologie, 60550 Verneuil-en-Halatte, France
| | | | - Werner Brack
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany; Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, 52074 Aachen, Germany
| | - François Brion
- Institut National de l'Environnement Industriel et des Risques INERIS, Unité d'Ecotoxicologie, 60550 Verneuil-en-Halatte, France
| | | | | | - Sarah E Crawford
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, 52074 Aachen, Germany
| | | | - Timo Hamers
- Vrije Universiteit Amsterdam, Dept. Environment & Health, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | | | - Klára Hilscherová
- Masaryk University, Faculty of Science, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 62500 Brno, Czech Republic
| | - Henner Hollert
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, 52074 Aachen, Germany
| | - Robert Kase
- Swiss Centre for Applied Ecotoxicology Eawag-EPFL, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Cornelia Kienle
- Swiss Centre for Applied Ecotoxicology Eawag-EPFL, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Andrew J Tindall
- Laboratoire Watchfrog, 1 Rue Pierre Fontaine, 91 000 Evry, France
| | - Jochen Tuerk
- Institut für Energie- und Umwelttechnik e.V. (IUTA, Institute of Energy and Environmental Technology), Bliersheimer Str. 58-60, D-47229 Duisburg, Germany
| | - Ron van der Oost
- Waternet Institute for the Urban Water Cycle, Department of Technology, Research and Engineering, Amsterdam, The Netherlands
| | - Etienne Vermeirssen
- Swiss Centre for Applied Ecotoxicology Eawag-EPFL, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Peta A Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, QLD 4222, Australia; The University of Queensland, Queensland Alliance for Environmental Health Sciences (QAEHS), Brisbane, QLD 4108, Australia
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142
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Hashmi MAK, Escher BI, Krauss M, Teodorovic I, Brack W. Effect-directed analysis (EDA) of Danube River water sample receiving untreated municipal wastewater from Novi Sad, Serbia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 624:1072-1081. [PMID: 29929224 DOI: 10.1016/j.scitotenv.2017.12.187] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/17/2017] [Accepted: 12/17/2017] [Indexed: 05/10/2023]
Abstract
The release of a multitude of pollutants from untreated municipal wastewater (UMWW) to surface waters may have adverse effects on aquatic wildlife including endocrine disruption. For effect-directed analysis (EDA), a Danube river water sample downstream of emission of UMWW in Novi Sad, Serbia was extracted on-site and after processing in the lab was subjected to reporter gene assays which revealed pronounced estrogenic (ERα), androgenic (AR) and oxidative stress response (OSR). The sample was fractionated with reversed-phase high performance liquid chromatography (RP-HPLC) collecting thirty fractions at two-minute intervals. Biological analysis identified 5 ERα- and 3 AR-active fractions while none of the fractions showed considerable activity with regards to OSR. It appeared that OSR of parent sample (PS) distributed over all fractions. Chemical analysis of active fractions by LC-MS/MS and LC-HRMS/MS found female reproductive hormones (estrone (E1), estradiol (E2), estriol (E3)) as cause of ERα activity while male reproductive hormones (testosterone, dihydrotestosterone (DHT)) and gestagens (progesterone and medroxyprogesterone) were active in the AR bioassay. Designed chemical mixtures in concentration ratios detected in the active fractions were tested with the bioassays. The identified chemicals quantitatively explained the observed bioactivity with no substantial contribution attributable to xenobiotics. In terms of bioanalytical equivalent concentrations (BEQs), detected chemicals explained 5-159% of ERα-active fraction's biological effect and 31-147% for AR-active fractions. Estradiol and dihydrotestosterone were the compounds dominating the most of the effect in this study. In summary, androgenic compounds were found to be as potent as estrogenic compounds while OSR was found to be the cumulative effect of the mixture of many compounds present in the sample rather than the mixture effect dominated by individual chemicals. The obtained results stress the importance of wastewater treatment plant (WWTP) to minimize the pollutant load from UMWW in order to reduce the risk of endocrine disruption to the aquatic life as well as to improve the status of receiving freshwater ecosystem.
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Affiliation(s)
- Muhammad Arslan Kamal Hashmi
- UFZ - Helmholtz Centre for Environmental Research, Effect-Directed Analysis, 04318 Leipzig, Germany; RWTH Aachen University, Institute for Environmental Research (Biology V), Department of Ecosystem Analysis (ESA), Worringer Weg 1, D-52074 Aachen, Germany.
| | - Beate I Escher
- UFZ - Helmholtz Centre for Environmental Research, Cell Toxicology, 04318 Leipzig, Germany; Eberhard Karls University Tübingen, Environmental Toxicology, Center for Applied Geoscience, 72074 Tübingen, Germany
| | - Martin Krauss
- UFZ - Helmholtz Centre for Environmental Research, Effect-Directed Analysis, 04318 Leipzig, Germany
| | - Ivana Teodorovic
- University of Novi Sad, Faculty of Sciences, Trg Dositeja Obradovica 2, 21000 Novi Sad, Serbia
| | - Werner Brack
- UFZ - Helmholtz Centre for Environmental Research, Effect-Directed Analysis, 04318 Leipzig, Germany; RWTH Aachen University, Institute for Environmental Research (Biology V), Department of Ecosystem Analysis (ESA), Worringer Weg 1, D-52074 Aachen, Germany
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143
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Altenburger R, Scholze M, Busch W, Escher BI, Jakobs G, Krauss M, Krüger J, Neale PA, Ait-Aissa S, Almeida AC, Seiler TB, Brion F, Hilscherová K, Hollert H, Novák J, Schlichting R, Serra H, Shao Y, Tindall A, Tollefsen KE, Umbuzeiro G, Williams TD, Kortenkamp A. Mixture effects in samples of multiple contaminants - An inter-laboratory study with manifold bioassays. ENVIRONMENT INTERNATIONAL 2018; 114:95-106. [PMID: 29499452 DOI: 10.1016/j.envint.2018.02.013] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/06/2018] [Accepted: 02/08/2018] [Indexed: 05/18/2023]
Abstract
Chemicals in the environment occur in mixtures rather than as individual entities. Environmental quality monitoring thus faces the challenge to comprehensively assess a multitude of contaminants and potential adverse effects. Effect-based methods have been suggested as complements to chemical analytical characterisation of complex pollution patterns. The regularly observed discrepancy between chemical and biological assessments of adverse effects due to contaminants in the field may be either due to unidentified contaminants or result from interactions of compounds in mixtures. Here, we present an interlaboratory study where individual compounds and their mixtures were investigated by extensive concentration-effect analysis using 19 different bioassays. The assay panel consisted of 5 whole organism assays measuring apical effects and 14 cell- and organism-based bioassays with more specific effect observations. Twelve organic water pollutants of diverse structure and unique known modes of action were studied individually and as mixtures mirroring exposure scenarios in freshwaters. We compared the observed mixture effects against component-based mixture effect predictions derived from additivity expectations (assumption of non-interaction). Most of the assays detected the mixture response of the active components as predicted even against a background of other inactive contaminants. When none of the mixture components showed any activity by themselves then the mixture also was without effects. The mixture effects observed using apical endpoints fell in the middle of a prediction window defined by the additivity predictions for concentration addition and independent action, reflecting well the diversity of the anticipated modes of action. In one case, an unexpectedly reduced solubility of one of the mixture components led to mixture responses that fell short of the predictions of both additivity mixture models. The majority of the specific cell- and organism-based endpoints produced mixture responses in agreement with the additivity expectation of concentration addition. Exceptionally, expected (additive) mixture response did not occur due to masking effects such as general toxicity from other compounds. Generally, deviations from an additivity expectation could be explained due to experimental factors, specific limitations of the effect endpoint or masking side effects such as cytotoxicity in in vitro assays. The majority of bioassays were able to quantitatively detect the predicted non-interactive, additive combined effect of the specifically bioactive compounds against a background of complex mixture of other chemicals in the sample. This supports the use of a combination of chemical and bioanalytical monitoring tools for the identification of chemicals that drive a specific mixture effect. Furthermore, we demonstrated that a panel of bioassays can provide a diverse profile of effect responses to a complex contaminated sample. This could be extended towards representing mixture adverse outcome pathways. Our findings support the ongoing development of bioanalytical tools for (i) compiling comprehensive effect-based batteries for water quality assessment, (ii) designing tailored surveillance methods to safeguard specific water uses, and (iii) devising strategies for effect-based diagnosis of complex contamination.
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Affiliation(s)
- Rolf Altenburger
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany; Institute for Environmental Research, RWTH Aachen University, 52074 Aachen, Germany.
| | - Martin Scholze
- Institute for the Environment, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
| | - Wibke Busch
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany
| | - Beate I Escher
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany; Eberhard Karls University Tübingen, Environmental Toxicology, Center for Applied Geoscience, 72074 Tübingen, Germany
| | - Gianina Jakobs
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany
| | - Martin Krauss
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany
| | - Janet Krüger
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany
| | - Peta A Neale
- Australian Rivers Institute, Griffith School of Environment, Griffith University, Southport, QLD 4222, Australia
| | - Selim Ait-Aissa
- Institut National de l'Environnement Industriel et des Risques INERIS, Unité d'Ecotoxicologie, 60550 Verneuil-en-Halatte, France
| | - Ana Catarina Almeida
- Norwegian Institute for Water Research NIVA, Gaustadalléen 21, N-0349 Oslo, Norway
| | | | - François Brion
- Institut National de l'Environnement Industriel et des Risques INERIS, Unité d'Ecotoxicologie, 60550 Verneuil-en-Halatte, France
| | - Klára Hilscherová
- Masaryk University, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 62500 Brno, Czech Republic
| | - Henner Hollert
- Institute for Environmental Research, RWTH Aachen University, 52074 Aachen, Germany
| | - Jiří Novák
- Masaryk University, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 62500 Brno, Czech Republic
| | - Rita Schlichting
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany
| | - Hélène Serra
- Institut National de l'Environnement Industriel et des Risques INERIS, Unité d'Ecotoxicologie, 60550 Verneuil-en-Halatte, France
| | - Ying Shao
- Institute for Environmental Research, RWTH Aachen University, 52074 Aachen, Germany
| | - Andrew Tindall
- WatchFrog, Bâtiment Genavenir 3, 1 rue Pierre Fontaine, 91000 Evry, France
| | - Knut Erik Tollefsen
- Norwegian Institute for Water Research NIVA, Gaustadalléen 21, N-0349 Oslo, Norway
| | - Gisela Umbuzeiro
- Faculdade de Tecnologia, FT-UNICAMP, Universidade Estadual de Campinas, Limeira, SP 13484-332, Brazil
| | - Tim D Williams
- School of Biosciences, The University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Andreas Kortenkamp
- Institute for the Environment, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
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144
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Triclosan Lacks Anti-Estrogenic Effects in Zebrafish Cells but Modulates Estrogen Response in Zebrafish Embryos. Int J Mol Sci 2018; 19:ijms19041175. [PMID: 29649157 PMCID: PMC5979399 DOI: 10.3390/ijms19041175] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/06/2018] [Accepted: 04/10/2018] [Indexed: 11/17/2022] Open
Abstract
Triclosan (TCS), an antimicrobial agent widely found in the aquatic environment, is suspected to act as an endocrine disrupting compound, however mechanistic information is lacking in regards to aquatic species. This study assessed the ability of TCS to interfere with estrogen receptor (ER) transcriptional activity, in zebrafish-specific in vitro and in vivo reporter gene assays. We report that TCS exhibits a lack of either agonistic or antagonistic effects on a panel of ER-expressing zebrafish (ZELH-zfERα and -zfERβ) and human (MELN) cell lines. At the organism level, TCS at concentrations of up to 0.3 µM had no effect on ER-regulated brain aromatase gene expression in transgenic cyp19a1b-GFP zebrafish embryos. At a concentration of 1 µM, TCS interfered with the E2 response in an ambivalent manner by potentializing a low E2 response (0.625 nM), but decreasing a high E2 response (10 nM). Altogether, our study suggests that while modulation of ER-regulated genes by TCS may occur in zebrafish, it does so irrespective of a direct binding and activation of zfERs.
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145
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Recent trends in water analysis triggering future monitoring of organic micropollutants. Anal Bioanal Chem 2018; 410:3933-3941. [PMID: 29564501 PMCID: PMC6010479 DOI: 10.1007/s00216-018-1015-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 02/15/2018] [Accepted: 03/08/2018] [Indexed: 02/07/2023]
Abstract
Water analysis has been an important area since the beginning of analytical chemistry. The focus though has shifted substantially: from minerals and the main constituents of water in the time of Carl Remigius Fresenius to a multitude of, in particular, organic compounds at concentrations down to the sub-nanogram per liter level nowadays. This was possible only because of numerous innovations in instrumentation in recent decades, drivers of which are briefly discussed. In addition to the high demands on sensitivity, high throughput by automation and short analysis times are major requirements. In this article, some recent developments in the chemical analysis of organic micropollutants (OMPs) are presented. These include the analysis of priority pollutants in whole water samples, extension of the analytical window, in particular to encompass highly polar compounds, the trend toward more than one separation dimension before mass spectrometric detection, and ways of coping with unknown analytes by suspect and nontarget screening approaches involving high-resolution mass spectrometry. Furthermore, beyond gathering reliable concentration data for many OMPs, the question of the relevance of such data for the aquatic system under scrutiny is becoming ever more important. To that end, effect-based analytics can be used and may become part of future routine monitoring, mostly with a focus on adverse effects of OMPs in specific test systems mimicking environmental impacts. Despite advances in the field of water analysis in recent years, there are still many challenges for further analytical research. Graphical abstract Recent trends in water analysis of organic micropollutants that open new opportunities in future water monitoring. HRMS high-resolution mass spectrometry, PMOC persistent mobile organic compounds.
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146
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Neale PA, Brack W, Aït-Aïssa S, Busch W, Hollender J, Krauss M, Maillot-Maréchal E, Munz NA, Schlichting R, Schulze T, Vogler B, Escher BI. Solid-phase extraction as sample preparation of water samples for cell-based and other in vitro bioassays. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2018; 20:493-504. [PMID: 29493668 DOI: 10.1039/c7em00555e] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
In vitro bioassays are increasingly used for water quality monitoring. Surface water samples often need to be enriched to observe an effect and solid-phase extraction (SPE) is commonly applied for this purpose. The applied methods are typically optimised for the recovery of target chemicals and not for effect recovery for bioassays. A review of the few studies that have evaluated SPE recovery for bioassays showed a lack of experimentally determined recoveries. Therefore, we systematically measured effect recovery of a mixture of 579 organic chemicals covering a wide range of physicochemical properties that were spiked into a pristine water sample and extracted using large volume solid-phase extraction (LVSPE). Assays indicative of activation of xenobiotic metabolism, hormone receptor-mediated effects and adaptive stress responses were applied, with non-specific effects determined through cytotoxicity measurements. Overall, effect recovery was found to be similar to chemical recovery for the majority of bioassays and LVSPE blanks had no effect. Multi-layer SPE exhibited greater recovery of spiked chemicals compared to LVSPE, but the blanks triggered cytotoxicity at high enrichment. Chemical recovery data together with single chemical effect data were used to retrospectively estimate with reverse recovery modelling that there was typically less than 30% effect loss expected due to reduced SPE recovery in published surface water monitoring studies. The combination of targeted experiments and mixture modelling clearly shows the utility of SPE as a sample preparation method for surface water samples, but also emphasizes the need for adequate controls when extraction methods are adapted from chemical analysis workflows.
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Affiliation(s)
- Peta A Neale
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, QLD 4222, Australia
| | - Werner Brack
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany. and RWTH Aachen University, Institute for Environmental Research, 52074 Aachen, Germany
| | - Selim Aït-Aïssa
- Institut National de l'Environnement Industriel et des Risques INERIS, 60550 Verneuil-en-Halatte, France
| | - Wibke Busch
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany.
| | - Juliane Hollender
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland and Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Martin Krauss
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany.
| | | | - Nicole A Munz
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland and Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Rita Schlichting
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany.
| | - Tobias Schulze
- UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany.
| | - Bernadette Vogler
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Beate I Escher
- Australian Rivers Institute, School of Environment and Science, Griffith University, Southport, QLD 4222, Australia and UFZ - Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany. and Eberhard Karls University Tübingen, Environmental Toxicology, Center for Applied Geosciences, 72074 Tübingen, Germany
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147
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Li XF, Mitch WA. Drinking Water Disinfection Byproducts (DBPs) and Human Health Effects: Multidisciplinary Challenges and Opportunities. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:1681-1689. [PMID: 29283253 DOI: 10.1021/acs.est.7b05440] [Citation(s) in RCA: 380] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
While drinking water disinfection has effectively prevented waterborne diseases, an unintended consequence is the generation of disinfection byproducts (DBPs). Epidemiological studies have consistently observed an association between consumption of chlorinated drinking water with an increased risk of bladder cancer. Out of the >600 DBPs identified, regulations focus on a few classes, such as trihalomethanes (THMs), whose concentrations were hypothesized to correlate with the DBPs driving the toxicity of disinfected waters. However, the DBPs responsible for the bladder cancer association remain unclear. Utilities are switching away from a reliance on chlorination of pristine drinking water supplies to the application of new disinfectant combinations to waters impaired by wastewater effluents and algal blooms. In light of these changes in disinfection practice, this article discusses new approaches being taken by analytical chemists, engineers, toxicologists and epidemiologists to characterize the DBP classes driving disinfected water toxicity, and suggests that DBP exposure should be measured using other DBP classes in addition to THMs.
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Affiliation(s)
- Xing-Fang Li
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta , Edmonton, AB T6G 2G3 Canada
| | - William A Mitch
- Department of Civil and Environmental Engineering, Stanford University , 473 Via Ortega, Stanford, California 94305, United States
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148
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Campana O, Wlodkowic D. Ecotoxicology Goes on a Chip: Embracing Miniaturized Bioanalysis in Aquatic Risk Assessment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:932-946. [PMID: 29284083 DOI: 10.1021/acs.est.7b03370] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Biological and environmental sciences are, more than ever, becoming highly dependent on technological and multidisciplinary approaches that warrant advanced analytical capabilities. Microfluidic lab-on-a-chip technologies are perhaps one the most groundbreaking offshoots of bioengineering, enabling design of an entirely new generation of bioanalytical instrumentation. They represent a unique approach to combine microscale engineering and physics with specific biological questions, providing technological advances that allow for fundamentally new capabilities in the spatiotemporal analysis of molecules, cells, tissues, and even small metazoan organisms. While these miniaturized analytical technologies experience an explosive growth worldwide, with a substantial promise of a direct impact on biosciences, it seems that lab-on-a-chip systems have so far escaped the attention of aquatic ecotoxicologists. In this Critical Review, potential applications of the currently existing and emerging chip-based technologies for aquatic ecotoxicology and water quality monitoring are highlighted. We also offer suggestions on how aquatic ecotoxicology can benefit from adoption of microfluidic lab-on-a-chip devices for accelerated bioanalysis.
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Affiliation(s)
- Olivia Campana
- Instituto de Ciencias Marinas de Andalucía, CSIC , Puerto Real, 11519, Spain
| | - Donald Wlodkowic
- School of Science, RMIT University , Melbourne, Victoria 3083, Australia
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149
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Leusch FDL, Aneck-Hahn NH, Cavanagh JAE, Du Pasquier D, Hamers T, Hebert A, Neale PA, Scheurer M, Simmons SO, Schriks M. Comparison of in vitro and in vivo bioassays to measure thyroid hormone disrupting activity in water extracts. CHEMOSPHERE 2018; 191:868-875. [PMID: 29107228 DOI: 10.1016/j.chemosphere.2017.10.109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/17/2017] [Accepted: 10/20/2017] [Indexed: 05/02/2023]
Abstract
Environmental chemicals can induce thyroid disruption through a number of mechanisms including altered thyroid hormone biosynthesis and transport, as well as activation and inhibition of the thyroid receptor. In the current study six in vitro bioassays indicative of different mechanisms of thyroid disruption and one whole animal in vivo assay were applied to 9 model compounds and 4 different water samples (treated wastewater, surface water, drinking water and ultra-pure lab water; both unspiked and spiked with model compounds) to determine their ability to detect thyroid active compounds. Most assays correctly identified and quantified the model compounds as agonists or antagonists, with the reporter gene assays being the most sensitive. However, the reporter gene assays did not detect significant thyroid activity in any of the water samples, suggesting that activation or inhibition of the thyroid hormone receptor is not a relevant mode of action for thyroid endocrine disruptors in water. The thyroperoxidase (TPO) inhibition assay and transthyretin (TTR) displacement assay (FITC) detected activity in the surface water and treated wastewater samples, but more work is required to assess if this activity is a true measure of thyroid activity or matrix interference. The whole animal Xenopus Embryonic Thyroid Assay (XETA) detected some activity in the unspiked surface water and treated wastewater extracts, but not in unspiked drinking water, and appears to be a suitable assay to detect thyroid activity in environmental waters.
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Affiliation(s)
- Frederic D L Leusch
- Australian Rivers Institute, Griffith School of Environment, Griffith University, Southport, QLD, 4222, Australia.
| | - Natalie H Aneck-Hahn
- Environmental Chemical Pollution and Health Research Unit, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | | | | | - Timo Hamers
- Vrije Universiteit Amsterdam, Department Environment & Health, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Armelle Hebert
- Veolia Research & Innovation, 78600, Maisons-Laffitte, France
| | - Peta A Neale
- Australian Rivers Institute, Griffith School of Environment, Griffith University, Southport, QLD, 4222, Australia
| | - Marco Scheurer
- DVGW - Technologiezentrum Wasser, Karlsruher Str.84, 76139, Karlsruhe, Germany
| | - Steven O Simmons
- National Center for Computational Toxicology, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27711, United States
| | - Merijn Schriks
- KWR Watercycle Research Institute, Groningenhaven 7, 3433 PE, Nieuwegein, The Netherlands; Vitens Drinking Water Company, 8019 BE, Zwolle, The Netherlands
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150
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Brack W, Escher BI, Müller E, Schmitt-Jansen M, Schulze T, Slobodnik J, Hollert H. Towards a holistic and solution-oriented monitoring of chemical status of European water bodies: how to support the EU strategy for a non-toxic environment? ENVIRONMENTAL SCIENCES EUROPE 2018; 30:33. [PMID: 30221105 PMCID: PMC6132835 DOI: 10.1186/s12302-018-0161-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 08/25/2018] [Indexed: 05/02/2023]
Abstract
The definition of priority substances (PS) according to the Water Framework Directive (WFD) helped to remove many of these chemicals from the market and to reduce their concentrations in the European water bodies. However, it could not prevent that many of these chemicals have been replaced by others with similar risks. Today, monitoring of the PS-based chemical status according to WFD covers only a tiny fraction of toxic risks, extensively ignores mixture effects and lacks incentives and guidance for abatement. Thus, we suggest complement this purely status-related approach with more holistic and solution-oriented monitoring, which at the same time helps to provide links to the ecological status. Major elements include (1) advanced chemical screening techniques supporting mixture risk assessment and unraveling of source-related patterns in complex mixtures, (2) effect-based monitoring for the detection of groups of chemicals with similar effects and the establishment of toxicity fingerprints, (3) effect-directed analysis of drivers of toxicity and (4) to translate chemical and toxicological fingerprints into chemical footprints for prioritization of management measures. The requirement of more holistic and solution-oriented monitoring of chemical contamination is supported by the significant advancement of appropriate monitoring tools within the last years. Non-target screening technology, effect-based monitoring and basic understanding of mixture assessment are available conceptually and in research but also increasingly find their way into practical monitoring. Substantial progress in the development, evaluation and demonstration of these tools, for example, in the SOLUTIONS project enhanced their acceptability. Further advancement, integration and demonstration, extensive data exchange and closure of remaining knowledge gaps are suggested as high priority research needs for the next future to bridge the gap between insufficient ecological status and cost-efficient abatement measures.
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Affiliation(s)
- Werner Brack
- Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
- Department of Ecosystem Analysis, Institute for Environmental Research, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
| | - Beate I. Escher
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
- Environmental Toxicology, Center for Applied Geosciences, Eberhard Karls University Tübingen, 72074 Tübingen, Germany
| | - Erik Müller
- Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Mechthild Schmitt-Jansen
- Department of Bioanalytical Ecotoxicology, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Tobias Schulze
- Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | | | - Henner Hollert
- Department of Ecosystem Analysis, Institute for Environmental Research, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
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