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Chen L, Yuan A, Zhang D, Xie W, Peng H. Fluorescence and colorimetric analysis of β-estradiol based on aptamer assembled spherical nucleic acids. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:6356-6363. [PMID: 39221548 DOI: 10.1039/d4ay01283f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Detecting β-estradiol (E2) in environmental monitoring is a complex task due to its status as a significant environmental contaminant. The detection methods require precision, sensitivity, and the ability to be conducted on-site without expensive instrumentation. Herein, we developed a novel approach using E2 aptamer assembled spherical nucleic acids (SNAs), which combines the sensitivity of fluorescence and the simplicity of colorimetry. Initially, a fluorescein (FAM)-labeled DNA aptamer is attached to the surface of gold nanoparticles (AuNPs) through hybridization with thiol-labeled DNA, resulting in fluorescence quenching. However, when E2 is present, the aptamer specifically binds to it, displacing from the thiol-DNA and releasing from the AuNP's surface. This leads to the recovery of fluorescence, allowing for quantitative detection of E2 by measuring the increase in fluorescence signal. Additionally, E2 detection can also be achieved visually using ultraviolet light. For colorimetric analysis, we introduce another set of AuNPs modified with thiol-DNA complementary to the DNA remaining on the surface of the previous AuNPs. When E2 triggers the release of the aptamer, the DNA on both AuNPs hybridized to each other, causing the aggregation of AuNPs and resulting in a distinct color change from red to purple. The detection limits for fluorescence and colorimetric analyses are 1 nM and 5 nM, respectively. We successfully applied this biosensing strategy to determine E2 concentrations in tap water and serum samples. Furthermore, our assay exhibits high selectivity towards E2 over other estrogens. Overall, this innovative approach provides an effective and versatile method for convenient on-site monitoring of E2.
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Affiliation(s)
- Leyuan Chen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- School of Environment, Hangzhou Institution for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Aijiao Yuan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dapeng Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- School of Environment, Hangzhou Institution for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjing Xie
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hanyong Peng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
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Tan ML, Shen YJ, Chen QL, Wu FR, Liu ZH. Environmentally relevant estrogens impaired spermatogenesis and sexual behaviors in male and female zebrafish. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 273:107008. [PMID: 38941808 DOI: 10.1016/j.aquatox.2024.107008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 06/02/2024] [Accepted: 06/18/2024] [Indexed: 06/30/2024]
Abstract
Environmental estrogens (EEs) are found extensively in natural waters and negatively affect fish reproduction. Research on the reproductive toxicity of EEs mixtures in fish at environmentally relevant concentrations is scarce. In this study, adult male zebrafish were exposed for 60 days to EES (a mixture of EEs), EE2-low (5.55 ng/L, with an estrogenic potency equal to EES), and EE2-high (11.1 ng/L). After exposure, the expression levels of vtg1, vtg3, and esr1 in the livers in EES-treated fish remained unaltered, whereas they were significantly increased in EE2-treated fish. Both EE2-high and EES exposures notably reduced the gonad somatic index and sperm count. A disrupted spermatogenesis was also observed in the testes of EE2-high- and EES-exposed fish, along with an alteration in the expression of genes associated with spermatogonial proliferation (pcna, nanog), cell cycle transition (cyclinb1, cyclind1), and meiosis (aldh1a2, cyp26a1, sycp3). Both EE2 and EES significantly lowered plasma 11-ketotestosterone levels in males, likely by inhibiting the expression level of genes for its synthesis (scc, cyp17a1 and cyp11b2), and increased 17β-estradiol (E2) levels, possibly through upregulating the expression of cyp19a1a. A significant increase in tnfrsf1a expression and the tnfrsf1a/tnfrsf1b ratio in EE2-high and EES-treated males also suggests increased apoptosis via the extrinsic pathway. Further investigation showed that both EE2-high and EES diminished the sexual behavior of male fish, accompanied with reduced E2 levels in the brain and the expression of genes in the kisspeptin/gonadotropin-releasing hormone system. Interestingly, the sexual behavior of unexposed females paired with treated males was also reduced, indicating a synergistic effect. This study suggests that EES have a more severe impact on reproduction than EE2-low, and EEs could interfere not only with spermatogenesis in fish, but also with the sexual behaviors of both exposed males and their female partners, thereby leading to a more significant disruption in fish reproduction.
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Affiliation(s)
- Mei-Ling Tan
- Chongqing Key Laboratory of Conservation and Utilization of Freshwater Fishes, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China; Laboratory of Water Ecological Health and Environmental Safety, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China
| | - Yan-Jun Shen
- Chongqing Key Laboratory of Conservation and Utilization of Freshwater Fishes, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China; Laboratory of Water Ecological Health and Environmental Safety, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China
| | - Qi-Liang Chen
- Chongqing Key Laboratory of Conservation and Utilization of Freshwater Fishes, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China; Laboratory of Water Ecological Health and Environmental Safety, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China
| | - Feng-Rui Wu
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Fuyang Normal University, Fuyang, 236037, China.
| | - Zhi-Hao Liu
- Chongqing Key Laboratory of Conservation and Utilization of Freshwater Fishes, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China; Laboratory of Water Ecological Health and Environmental Safety, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China.
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Singh PK, Bhattacharjya R, Lakshmi NJ, Thakur IS, Tiwari A. Evaluation of the antioxidative response of diatoms grown on emerging steroidal contaminants. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:820. [PMID: 37289326 DOI: 10.1007/s10661-023-11336-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 05/03/2023] [Indexed: 06/09/2023]
Abstract
With increasing anthropic activities, a myriad of typical contaminants from industries, hospitals, and municipal discharges have been found which fail to be categorized under regulatory standards and are hence considered contaminants of "emerging concern". Since these pollutants are not removed effectively even by the conventional treatment systems, they tend to inflict potential threats to both human and aquatic life. However, microalgae-mediated remediation strategies have recently gained worldwide importance owing to their role in carbon fixation, low operational cost, and production of high-value products. In this study, centric diatom Chaetoceros neogracilis was exposed to different concentrations of estradiol (E2)-induced synthetic media ranging from 0 to 2 mg L-1, and its impact on the antioxidative system of algae was investigated. The results demonstrate that the nutrient stress caused a strong oxidative response elevating the superoxide dismutase (SOD) activity and malondialdehyde (MDA) content in the 2 mg L-1 E2-treated diatom cultures. However, the specific activity of the H2O2 radical scavenging enzymes like catalase (CAT) was inhibited by the E2 treatment, while that of ascorbate peroxidase (APX) remained comparable to the control (0 mg L-1 of E2). Thus, the study reveals the scope of diatoms as potential indicators of environmental stress even under the varying concentration of a single contaminant (E2).
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Affiliation(s)
- Pankaj Kumar Singh
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Raya Bhattacharjya
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India
| | - N Jaya Lakshmi
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Indu Shekhar Thakur
- Amity School of Earth & Environment Science, Amity University, Haryana, India
| | - Archana Tiwari
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India.
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Liu S, Véron E, Lotfi S, Fischer K, Schulze A, Schäfer AI. Poly(vinylidene fluoride) membrane with immobilized TiO 2 for degradation of steroid hormone micropollutants in a photocatalytic membrane reactor. JOURNAL OF HAZARDOUS MATERIALS 2023; 447:130832. [PMID: 36696777 DOI: 10.1016/j.jhazmat.2023.130832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/10/2023] [Accepted: 01/19/2023] [Indexed: 06/17/2023]
Abstract
The lack of effective technologies to remove steroid hormones (SHs) from aquatic systems is a critical issue for both environment and public health. The performance of a flow-through photocatalytic membrane reactor (PMR) with TiO2 immobilized on a photostable poly(vinylidene fluoride) membrane (PVDF-TiO2) was evaluated in the context of SHs degradation at concentrations from 0.05 to 1000 µg/L under UV exposure (365 nm). A comprehensive investigation into the membrane preparation approach, including varying the surface Ti content and distribution, and membrane pore size, was conducted to gain insights on the rate-limiting steps for the SHs degradation. Increasing surface Ti content from 4 % to 6.5 % enhanced the 17β-estradiol (E2) degradation from 46 ± 12-81 ± 6 %. Apparent degradation kinetics were independent of both TiO2 homogeneity and membrane pore size (0.1-0.45 µm). With optimized conditions, E2 removal was higher than 96 % at environmentally relevant feed concentration (100 ng/L), a flux of 60 L/m2h, 25 mW/cm2, and 6.5 % Ti. These results indicated that the E2 degradation on the PVDF-TiO2 membrane was limited by the catalyst content and light penetration depth. Further exploration of novel TiO2 immobilization approach that can offer a larger catalyst content and light penetration is required to improve the micropollutant removal efficiency in PMR.
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Affiliation(s)
- Siqi Liu
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Eléonore Véron
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Shabnam Lotfi
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Kristina Fischer
- Leibniz Institute of Surface Engineering (IOM), Permoserstr.15, D-04318 Leipzig, Germany
| | - Agnes Schulze
- Leibniz Institute of Surface Engineering (IOM), Permoserstr.15, D-04318 Leipzig, Germany
| | - Andrea I Schäfer
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
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5
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Ojoghoro JO, Scrimshaw MD, Sumpter JP. Steroid hormones in the aquatic environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148306. [PMID: 34157532 DOI: 10.1016/j.scitotenv.2021.148306] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/03/2021] [Accepted: 06/03/2021] [Indexed: 05/16/2023]
Abstract
Steroid hormones are extremely important natural hormones in all vertebrates. They control a wide range of physiological processes, including osmoregulation, sexual maturity, reproduction and stress responses. In addition, many synthetic steroid hormones are in widespread and general use, both as human and veterinary pharmaceuticals. Recent advances in environmental analytical chemistry have enabled concentrations of steroid hormones in rivers to be determined. Many different steroid hormones, both natural and synthetic, including transformation products, have been identified and quantified, demonstrating that they are widespread aquatic contaminants. Laboratory ecotoxicology experiments, mainly conducted with fish, but also amphibians, have shown that some steroid hormones, both natural and synthetic, can adversely affect reproduction when present in the water at extremely low concentrations: even sub-ng/L. Recent research has demonstrated that mixtures of different steroid hormones can inhibit reproduction even when each individual hormone is present at a concentration below which it would not invoke a measurable effect on its own. Limited field studies have supported the conclusions of the laboratory studies that steroid hormones may be environmental pollutants of significant concern. Further research is required to identify the main sources of steroid hormones entering the aquatic environment, better describe the complex mixtures of steroid hormones now known to be ubiquitously present, and determine the impacts of environmentally-realistic mixtures of steroid hormones on aquatic vertebrates, especially fish. Only once that research is completed can a robust aquatic risk assessment of steroid hormones be concluded.
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Affiliation(s)
- J O Ojoghoro
- Department of Botany, Faculty of Science, Delta State University Abraka, Delta State, Nigeria
| | - M D Scrimshaw
- Division of Environmental Science, Department of Life Sciences, Brunel University London, Uxbridge, Middlesex UB8 3PH, United Kingdom.
| | - J P Sumpter
- Division of Environmental Science, Department of Life Sciences, Brunel University London, Uxbridge, Middlesex UB8 3PH, United Kingdom.
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Adriano N, Ahearn C, Black C, Cracchiolo M, Ghere D, Nuñez A, Olivan L, Patel R, Saner S, Smith KR, Watkins B, Hare PM. Solvent- and Wavelength-Dependent Photolysis of Estrone. Photochem Photobiol 2021; 98:783-797. [PMID: 34664279 DOI: 10.1111/php.13542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/24/2021] [Accepted: 10/15/2021] [Indexed: 12/29/2022]
Abstract
The direct photolysis of estrone in solvents ranging from water to cyclohexane is reported. The photodegradation is dominated by lumiestrone, an epimer of estrone resulting from the inversion of the methyl group at carbon 13, regardless of solvent and photolysis wavelength in the range 254-320 nm. Solvent addition products are also observed in lesser amounts. The photodegradation rate in water is an order of magnitude slower than in nonaqueous solvents. Short wavelength excitation enhances photodegradation. Together, these results suggest complicated photophysics underlie the photochemistry with implications for the remediation of environmental estrogens.
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Affiliation(s)
- Natalie Adriano
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Ceilidh Ahearn
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Cory Black
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Michael Cracchiolo
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Daniel Ghere
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Alexandra Nuñez
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Lars Olivan
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Raj Patel
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Stephanie Saner
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Krista R Smith
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Barbie Watkins
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
| | - Patrick M Hare
- Department of Chemistry and Biochemistry, Northern Kentucky University, Highland Heights, KY, USA
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Sprinkle RH, Payne-Sturges DC. Mixture toxicity, cumulative risk, and environmental justice in United States federal policy, 1980-2016 : Why, with much known, was little done? Environ Health 2021; 20:104. [PMID: 34535123 PMCID: PMC8449500 DOI: 10.1186/s12940-021-00764-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 06/24/2021] [Indexed: 05/12/2023]
Abstract
Toxic chemicals - "toxicants" - have been studied and regulated as single entities, and, carcinogens aside, almost all toxicants, single or mixed and however altered, have been thought harmless in very low doses or very weak concentrations. Yet much work in recent decades has shown that toxicants can injure wildlife, laboratory animals, and humans following exposures previously expected to be harmless. Additional work has shown that toxicants can act not only individually and cumulatively but also collectively and even synergistically and that they affect disadvantaged communities inordinately - and therefore, as argued by reformers, unjustly. As late as December 2016, the last full month before the inauguration of a president promising to rescind major environmental regulations, the United States federal environmental-health establishment, as led by the Environmental Protection Agency (EPA), had not developed coherent strategies to mitigate such risks, to alert the public to their plausibility, or to advise leadership in government and industry about their implications. To understand why, we examined archival materials, reviewed online databases, read internal industry communications, and interviewed experts. We confirmed that external constraints, statutory and judicial, had been in place prior to EPA's earliest interest in mixture toxicity, but we found no overt effort, certainly no successful effort, to loosen those constraints. We also found internal constraints: concerns that fully committing to the study of complex mixtures involving numerous toxicants would lead to methodological drift within the toxicological community and that trying to act on insights from such study could lead only to regulatory futility. Interaction of these constraints, external and internal, shielded the EPA by circumscribing its responsibilities and by impeding movement toward paradigmatic adjustment, but it also perpetuated scientifically dubious policies, such as those limiting the evaluation of commercial chemical formulations, including pesticide formulations, to only those ingredients said by their manufacturers to be active. In this context, regulators' disregard of synergism contrasted irreconcilably with biocide manufacturers' understanding that synergism enhanced lethality and patentability. In the end, an effective national response to mixture toxicity, cumulative risk, and environmental injustice did not emerge. In parallel, though, the National Institute of Environmental Health Sciences, which was less constrained, pursued with scientific investigation what the EPA had not pursued with regulatory action.
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Affiliation(s)
| | - Devon C Payne-Sturges
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, MD, 20742, USA
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Akhbarizadeh R, Dobaradaran S, Schmidt TC, Nabipour I, Spitz J. Worldwide bottled water occurrence of emerging contaminants: A review of the recent scientific literature. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122271. [PMID: 32311916 DOI: 10.1016/j.jhazmat.2020.122271] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/21/2020] [Accepted: 02/10/2020] [Indexed: 05/04/2023]
Abstract
Contaminants of emerging concern (CECs) have recently been detected in bottled water and have brought about discussions on possible risks for human health. However, a systematic review of CECs in bottled water is currently lacking due to the relatively new introduction and/or detection of these pollutants. Hence, this paper reviews the existing studies on the presence of six major groups of emerging contaminants including microplastics (MPs), pharmaceuticals and personal care products (PPCPs), bisphenol A (BPA), phthalates, alkylphenols (APs), and perfluoroalkyl and polyfluoroalkyl substances (PFASs) in bottled water from different countries. Also, the findings related to CECs' levels, their possible sources, and their risks are summarized. The gathered data indicate that MPs within the size range of 1-5 μm are the most predominant and potentially toxic classes of MPs in bottled water. In addition, PPCPs, PFASs, APs, and BPA occur in concentration levels of ng/L, while phthalates occur in the μg/L level in bottled water. The bottle type plays an important role in the contamination level. As expected, water in plastic bottles with plastic caps is more polluted than in glass bottles. However, other sources of contamination such as contact materials during cleaning, bottling, and storage are not negligible. Based on the gathered data in this review, the CEC levels except for MPs (no threshold values) in bottled water of most countries do not raise a safety concern for the human. However, the occurrence of individual CECs and their association in bottled water need more accurate data to understand their own/synergistic effects on human health.
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Affiliation(s)
- Razegheh Akhbarizadeh
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran; The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Sina Dobaradaran
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran; The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran; Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran; Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU), Faculty of Chemistry, University of Duisburg-Essen, Essen, Germany.
| | - Torsten C Schmidt
- Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU), Faculty of Chemistry, University of Duisburg-Essen, Essen, Germany
| | - Iraj Nabipour
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Jörg Spitz
- Akademie für Menschliche Medizin GmbH, Krauskopfallee 27, 65388, Schlangenbad, Germany
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Nantaba F, Wasswa J, Kylin H, Palm WU, Bouwman H, Kümmerer K. Occurrence, distribution, and ecotoxicological risk assessment of selected pharmaceutical compounds in water from Lake Victoria, Uganda. CHEMOSPHERE 2020; 239:124642. [PMID: 31521936 DOI: 10.1016/j.chemosphere.2019.124642] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/20/2019] [Accepted: 08/21/2019] [Indexed: 06/10/2023]
Abstract
The occurrence of 24 pharmaceuticals (including 15 antibiotics, three analgesic/anti-inflammatory drugs, three anti-epileptic/antidepressant drugs, two beta blockers, and one lipid regulator) was investigated in 75 water samples collected from four bays in the Ugandan part of Lake Victoria. In addition, the potential environmental risk of the target pharmaceutical compounds to aquatic organisms in the aquatic ecosystem of Lake Victoria was assessed. Water samples were extracted using solid phase extraction and analyzed for pharmaceuticals using high-performance liquid chromatography coupled with triple quadrupole mass spectrometry (LC/MS/MS). Eighteen of the 24 pharmaceuticals occurred at quantifiable concentrations. Sulfamethoxazole (1-5600 ng L-1), trimethoprim (1-89 ng L-1), tetracycline (3-70 ng L-1), sulfacetamide (1-13 ng L-1), and ibuprofen (6-780 ng L-1) occurred at quantifiable concentrations in all water samples. Sulfamethazine (2-50 ng L-1), erythromycin (10-66 ng L-1), diclofenac (2-160 ng L-1), and carbamazepine (5-72 ng L-1) were only quantifiable in water samples from Murchison Bay. The highest concentrations of pharmaceuticals were found in Murchison Bay, the main recipient of sewage effluents, industrial and municipal waste from Kampala city via the Nakivubo channel. Ecotoxicological risk assessment showed that sulfamethoxazole, oxytetracycline, erythromycin, and diclofenac pose a high toxic risk to aquatic organisms in the lake, while ciprofloxacin, norfloxacin, and ibuprofen pose a medium risk. This study is the first of its kind to report the levels and ecotoxic risks of pharmaceutical compounds in Lake Victoria waters, of Uganda, and East Africa as a whole.
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Affiliation(s)
- Florence Nantaba
- Department of Chemistry, Makerere University, P.O. Box 7062, Kampala, Uganda; Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Universitätsallee 1, 21335, Lüneburg, Germany
| | - John Wasswa
- Department of Chemistry, Makerere University, P.O. Box 7062, Kampala, Uganda
| | - Henrik Kylin
- Research Unit: Environmental Sciences and Management, North-West University, Potchefstroom, South Africa; Department of Thematic Research - Environmental Change, Linköping University, SE-58183, Linköping, Sweden
| | - Wolf-Ulrich Palm
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Universitätsallee 1, 21335, Lüneburg, Germany
| | - Hindrik Bouwman
- Research Unit: Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
| | - Klaus Kümmerer
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Universitätsallee 1, 21335, Lüneburg, Germany.
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Analysis of Environmental Protection Agency priority endocrine disruptor hormones and bisphenol A in tap, surface and wastewater by online concentration liquid chromatography tandem mass spectrometry. J Chromatogr A 2019; 1591:87-98. [DOI: 10.1016/j.chroma.2019.01.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 12/19/2018] [Accepted: 01/07/2019] [Indexed: 11/22/2022]
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11
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Chen H, Zhao L, Yu QJ. Determination and reduced life expectancy model and molecular docking analyses of estrogenic potentials of 17β-estradiol, bisphenol A and nonylphenol on expression of vitellogenin gene (vtg1) in zebrafish. CHEMOSPHERE 2019; 221:727-734. [PMID: 30677730 DOI: 10.1016/j.chemosphere.2019.01.093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 01/13/2019] [Accepted: 01/15/2019] [Indexed: 06/09/2023]
Abstract
This study determined and evaluated the estrogenic potentials on hepatic vitellogenin gene (vtg1) of adult male zebrafish which were exposed to low level concentrations (ng/L-μg/L levels) of individual and binary mixtures of 17β-estradiol (E2), bisphenol A (BPA) and nonylphenol (NP) through the use of reduced life expectancy (RLE) model and molecular docking analysis. The order of in vivo estrogenic potentials of individual and binary exposure of E2, BPA and NP was as follows: E2+BPA>E2>E2+NP>BPA>BPA + NP >>>NP. Binary mixtures of E2, BPA and NP had weak synergistic effects under the exposure concentration ranges. With the expression of hepatic vtg1 gene, the hepatic toxicity was analyzed by using the RLE model. All plots of the linear RLE model had negative slopes indicating that EC50 was negatively correlated with the natural logarithm of exposure time (lnET50). The RLE model analyses can be useful to evaluate the exposure time effects of zebrafish by using EC50 as toxicity endpoint. Molecular docking analysis revealed that the interaction potential of E2 (Binding energy: -10.1 kcal/mol) for the zebrafish ERα-LBD was the most potent (stable), followed by BPA (-8.0 kcal/mol) and NP (-6.8 kcal/mol). Molecular docking analysis can be useful to understand interactive effects of E2, BPA and NP.
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Affiliation(s)
- Hualong Chen
- School of Environment, Jinan University, Guangzhou, 511443, China
| | - Ling Zhao
- School of Environment, Jinan University, Guangzhou, 511443, China.
| | - Qiming Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Nathan Campus, Brisbane, Queensland, 4111, Australia
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He P, Matich EK, Yonkos LT, Friedman AE, Atilla-Gokcumen GE, Aga DS. Mass spectrometry based detection of common vitellogenin peptides across fish species for assessing exposure to estrogenic compounds in aquatic environments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:400-408. [PMID: 30055500 DOI: 10.1016/j.scitotenv.2018.07.252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/17/2018] [Accepted: 07/18/2018] [Indexed: 06/08/2023]
Abstract
The identification of myriad of chemicals in the environment that mimic hormones and affect the endocrine functions of exposed organism is a daunting analytical challenge for environmental scientists and engineers. Many of these endocrine disrupting chemicals (EDCs) are present at very low concentrations in the aquatic systems, but yet affect the metabolic, developmental, and reproductive functions in exposed fish and wildlife. Vitellogenin (VTG) protein is a widely used biomarker in fish for assessing exposure to EDCs, and is commonly measured using species-specific immunochemical techniques. In this study, we developed a liquid chromatography tandem mass spectrometry (LC-MS/MS) method that can measure common peptides from digested VTG in multiple fish species. In the initial experiments using high resolution mass spectrometry, two peptides (ALHPELR and FIELIQLLR) were identified as common fragments in the digested VTG protein isolated from three different fish species (Pimephales promelas, Micropterus salmoides, and Fundulus heteroclitus). Then, a quantitative analysis using LC-MS/MS under selected reaction monitoring mode was developed for the detection of these two peptides in trypsin-digested plasma from female fish (positive control), estrogen-exposed male fish (test sample), and unexposed male fish (negative control) using two of the same species used for identifying the common peptides (P. promelas, and M. salmoides) and one new species (Ameiurus nebulosus) that was not included during the selection of peptides. Results from this study demonstrate the potential of LC-MS/MS as an effective cross-species method to detect VTG in fish, which can be an alternative analytical technique for assessing endocrine disruption in multiple fish species.
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Affiliation(s)
- Ping He
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Eryn K Matich
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Lance T Yonkos
- Department of Environmental Science and Technology, College of Agriculture and Natural Resources, University of Maryland, College Park, Maryland 20742, United States
| | - Alan E Friedman
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - G Ekin Atilla-Gokcumen
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Diana S Aga
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States.
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Ruksrithong C, Phattarapattamawong S. Removals of estrone and 17β-estradiol by microalgae cultivation: kinetics and removal mechanisms. ENVIRONMENTAL TECHNOLOGY 2019; 40:163-170. [PMID: 28933248 DOI: 10.1080/09593330.2017.1384068] [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: 03/31/2017] [Accepted: 09/16/2017] [Indexed: 06/07/2023]
Abstract
Occurrence of estrone (E1) and 17β-estradiol (E2) in the environment has attracted the public attention since E1 and E2 cause estrogenicity in aquatic microorganisms. Microalgae cultivation in wastewater is considered as an economical practice since microalgae can be used for not only pollutant removals, but also as energy resources. This research aims to investigate the removals of E1 and E2 in synthetic wastewater by microalgae (i.e. Chlorella vulgaris and Scenedesmus obliquus). At the steady state, S. obliquus removed E1 and E2 by 91% and 99%, respectively. C. vulgaris removed E1 and E2 by 52% and 99%, respectively. Interestingly, the occurrence of E1 was observed when E2 was degraded by microalgae. The predominant mechanism for E1 and E2 removals was biodegradation, followed by adsorption. The adsorption kinetic and isotherm for both E1 and E2 can be described by the pseudo-second-order and Freundlich model. The addition of E1 and E2 resulted in a higher lipid content of microalgae by 1-9%.
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Affiliation(s)
- Chantima Ruksrithong
- a Department of Environmental Engineering, Faculty of Engineering , King Mongkut's University of Technology Thonburi , Bangkok , Thailand
| | - Songkeart Phattarapattamawong
- a Department of Environmental Engineering, Faculty of Engineering , King Mongkut's University of Technology Thonburi , Bangkok , Thailand
- b Research Program in Hazardous Substance Management in Agricultural Industry, Center of Excellence on Hazardous Substance Management (HSM) , Bangkok , Thailand
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14
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Li S, Ju H, Ji M, Zhang J, Song K, Chen P, Mu G. Terrestrial humic-like fluorescence peak of chromophoric dissolved organic matter as a new potential indicator tracing the antibiotics in typical polluted watershed. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 228:65-76. [PMID: 30212676 DOI: 10.1016/j.jenvman.2018.09.013] [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: 06/13/2018] [Revised: 08/26/2018] [Accepted: 09/03/2018] [Indexed: 06/08/2023]
Abstract
Natural surface waters are threatened globally by antibiotics pollution. In this study, we analyzed antibiotics and CDOM (Chromophoric dissolved organic matter) fluorescence in different water bodies using HPLC method and Excitation Emission Matrix- Parallel factor analysis, respectively. A combination of field studies in the Yinma River Watershed were conducted in rivers, reservoirs and urban rivers, and 65 CDOM and antibiotic samples were taken in April, May, July, and August 2016. EEM-PARAFAC analysis identified two components; a humic-like (C1) component and a tryptophan-like (C2) component. The redundancy analysis (RDA) demonstrated that CDOM could explain 38.2% (two axes) of the five antibiotics in reservoirs (N = 31), and 26.0% (two axes) of those in rivers and urban water (N = 30). Furthermore, the Pearson correlation coefficient between Sulfamethoxazole and C1 in reservoir water was 0.91 (t-test, 2-tailed, p < 0.01), and that between Sulfamethoxazole and C2 was 0.68 (t-test, 2-tailed, p < 0.01). This indicated that the humic-like component of CDOM PARAFAC fluorescence could detect Sulfamethoxazole contamination levels in the homogenized reservoir waters. Our results identified Sulfamethoxazole and Quinolones (Norfloxacin, 16.5 ng L-1; Enrofloxacin, 0.3 ng L-1; Ciprofloxacin, 30.9 ng L-1) at mean concentrations of 369.5 ng L-1 and 15.9 ng L-1, respectively, which were the higher levels in natural surface waters. The FTIR spectroscopy of the mixture of humic acid and sulfamethoxazole showed that the absorbance at 3415 cm-1 linked to OH stretching of OH groups and at 1386 cm-1 because of OH bending and vibration of COOH groups became weaker, indicating that COOH groups of humic acid can adsorb and react with -NH2 of sulfamethoxazole. The CDOM PARAFAC components can be adapted for online or in situ fluorescence measurements as an early warning of Sulfamethoxazole distribution and contamination in similar aquatic environments.
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Affiliation(s)
- Sijia Li
- School of Environment, Northeast Normal University, Changchun 130024, PR China.
| | - Hanyu Ju
- School of Environment, Northeast Normal University, Changchun 130024, PR China.
| | - Meichen Ji
- School of Environment, Northeast Normal University, Changchun 130024, PR China.
| | - Jiquan Zhang
- School of Environment, Northeast Normal University, Changchun 130024, PR China.
| | - Kaishan Song
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academic Science, Changchun 130102, PR China.
| | - Peng Chen
- School of Tourism and Geography Sciences, Jilin Normal University, Siping 136000, PR China.
| | - Guangyi Mu
- Institute of Grass Science, Northeast Normal University, Changchun 130024, PR China.
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Grill G, Li J, Khan U, Zhong Y, Lehner B, Nicell J, Ariwi J. Estimating the eco-toxicological risk of estrogens in China's rivers using a high-resolution contaminant fate model. WATER RESEARCH 2018; 145:707-720. [PMID: 30216865 DOI: 10.1016/j.watres.2018.08.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 07/10/2018] [Accepted: 08/25/2018] [Indexed: 06/08/2023]
Abstract
The contamination of freshwater systems arises in many river basins due to industrialization and population growth, posing risks to ecosystems and human health. Despite these concerns, the fate and potential impact of many emerging pollutants are currently unknown, especially when the compounds are released into surface waters from populations distributed across large spatial scales. In order to address this shortcoming, a spatially-explicit contaminant fate model was developed as an extension of the global, vector-based river routing model HydroROUT. HydroROUT operates at very high spatial resolution (∼500 m), simulates river and stream chemical transport with in-stream removal, and contains links to a set of lakes and reservoirs, which act as a partial sink during the transport. The chemical fate model was applied to China and includes a consumption and release module based on county-level population demographics, considers point-source contributions from 2547 wastewater treatment plants, and accumulates contributions of rural and urban populations not connected to sewage treatment plants. As a case study, the sources and fates of the estrogens estrone (E1), 17β-estradiol (E2), estriol (E3), as well as the synthetic estrogenic steroid hormone 17α-ethinylestradiol (EE2) were modelled in Chinese surface water bodies. Preliminary validation of the results showed predictions to be within the ranges of concentrations reported in literature, with exception of EE2. The total estrogenic mass in the entire river and lake system amounted to 370 tonnes of estrogens, with about 1.3 tonnes per year discharged to the ocean, neighboring countries or to inland sinks. Under a selected baseline scenario, eco-toxicological risk-i.e., contaminant concentrations in excess of the predicted no effect concentration (PNEC)-is found in 23.6% of all analyzed rivers of China with an average flow > 0.1 m3/s. Out of these, about 4% of rivers showed a high level of risk of 10 times or more above PNEC. Medium-to-large rivers are disproportionally affected; for example, 23.6%, 37.3%, 29.0% and 21.6% of river length are at risk in rivers of 1-10, 10-100, 100-1,000, and 1,000-10,000 m3/s of discharge, respectively, whereas no risk was predicted in the largest rivers (i.e., >10,000 m3/s) of China. Wastewater treatment plants process 22.5% of the total hormone load and thus play an important role in water quality control by reducing the risk in substantial portions of the river network, which would otherwise show elevated risk. Releases from untreated population dominate by far the overall contribution to risk.
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Affiliation(s)
- Günther Grill
- Department of Geography, McGill University, 805 Sherbrooke Street West, H3A 0B9, Montreal, Canada.
| | - Jing Li
- Department of Civil Engineering & Applied Mechanics, McGill University, 817 Sherbrooke Street West, H3A 0C3, Montreal, Canada.
| | - Usman Khan
- Department of Civil Engineering & Applied Mechanics, McGill University, 817 Sherbrooke Street West, H3A 0C3, Montreal, Canada
| | - Yan Zhong
- Beijing Municipal Research Institute of Environmental Protection, Beijing, 100037, China
| | - Bernhard Lehner
- Department of Geography, McGill University, 805 Sherbrooke Street West, H3A 0B9, Montreal, Canada
| | - Jim Nicell
- Department of Civil Engineering & Applied Mechanics, McGill University, 817 Sherbrooke Street West, H3A 0C3, Montreal, Canada
| | - Joseph Ariwi
- Department of Geography, McGill University, 805 Sherbrooke Street West, H3A 0B9, Montreal, Canada
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16
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Ma L, Yates SR. Dissolved organic matter and estrogen interactions regulate estrogen removal in the aqueous environment: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 640-641:529-542. [PMID: 29874629 DOI: 10.1016/j.scitotenv.2018.05.301] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/23/2018] [Accepted: 05/24/2018] [Indexed: 06/08/2023]
Abstract
This review summarizes the characterization and quantification of interactions between dissolved organic matter (DOM) and estrogens as well as the effects of DOM on aquatic estrogen removal. DOM interacts with estrogens via binding or sorption mechanisms like π-π interaction and hydrogen bonding. The binding affinity is evaluated in terms of organic-carbon-normalized sorption coefficient (Log KOC) which varies with types and composition of DOM. DOM has been suggested to be a more efficient sorbent compared with other matrices, such as suspended particulate matter, sediment and soil; likely associated with its large surface area and concentrated carbon content. As a photosensitizer, DOM enhanced estrogen photodegradation when the concentration of DOM was below a threshold value, and when above, the acceleration effect was not observed. DOM played a dual role in affecting biodegradation of estrogens depending on the recalcitrance of the DOM and the nutrition status of the degraders. DOM also acted as an electron shuttle (redox mediator) mediating the degradation of estrogens. DOM hindered enzyme-catalyzed removal of estrogens while enhanced their transformation during the simultaneous photo-enzymatic process. Membrane rejection of estrogens was pronounced for hydrophobic DOM with high aromaticity and phenolic moiety content. Elimination of estrogens via photolysis, biodegradation, enzymolysis and membrane rejection in the presence of DOM is initiated by sorption, accentuating the role of DOM as a mediator in regulating aquatic estrogen removal.
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Affiliation(s)
- Li Ma
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States; Contaminant Fate and Transport Unit, Salinity Laboratory, Agricultural Research Service, United States Department of Agriculture, Riverside, California 92507, United States
| | - Scott R Yates
- Contaminant Fate and Transport Unit, Salinity Laboratory, Agricultural Research Service, United States Department of Agriculture, Riverside, California 92507, United States.
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17
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Weissinger RH, Blackwell BR, Keteles K, Battaglin WA, Bradley PM. Bioactive contaminants of emerging concern in National Park waters of the northern Colorado Plateau, USA. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 636:910-918. [PMID: 29729508 PMCID: PMC6794149 DOI: 10.1016/j.scitotenv.2018.04.332] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/20/2018] [Accepted: 04/24/2018] [Indexed: 05/18/2023]
Abstract
Pharmaceuticals and personal care products (PPCPs), wastewater indicators (WWIs), and pesticides (herein, Contaminants of Emerging Concern [CECs]) have been documented in surface waters throughout the world and have associated risks to aquatic life. While much research has focused on temperate and urbanized watersheds, less is known about CEC presence in semi-arid landscapes, where water availability is limited and populations are low. CEC presence in water and sediment is reported for 21 sites in eight U.S. national parks in the northern Colorado Plateau region. From 2012 to 2016, at least one PPCP and/or WWI was detected at most sites on over half of sampling visits, indicating that CECs are not uncommon even in isolated areas. CEC detections were generally fewer and at lower concentrations than in urbanized or agricultural watersheds. Consistent with studies from other U.S. regions, the most frequently detected CECs in this study include DEET, caffeine, organophosphorus flame retardants, and bisphenol A in water and fecal indicators and polycyclic aromatic hydrocarbons in sediment. Maximum concentrations in this study were generally below available water quality benchmarks, sediment quality guidelines, and risk assessment thresholds associated with vertebrates. Additional work is needed to assess the potential activity of hormones, which had high reporting limits in our study, and potential bioactivity of environmental concentrations for invertebrates, microbial communities, and algae. Potential sources of CEC contamination include upstream wastewater effluent discharges and National Park Service invasive-plant-control herbicide applications. CEC occurrence patterns and similarities between continuous and isolated flow locations suggest that direct contamination from individual visitors may also occur. While our data indicate there is little aquatic health risk associated with CECs at our sites, our results demonstrate the ubiquity of CECs on the landscape and a continued need for public outreach concerning resource-use ethics and the potential effects of upstream development.
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18
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Facile synthesis of magnetic covalent organic framework nanobeads and application to magnetic solid-phase extraction of trace estrogens from human urine. J Chromatogr A 2018; 1567:136-146. [DOI: 10.1016/j.chroma.2018.06.066] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 06/22/2018] [Accepted: 06/27/2018] [Indexed: 01/21/2023]
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19
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Weizel A, Schlüsener MP, Dierkes G, Ternes TA. Occurrence of Glucocorticoids, Mineralocorticoids, and Progestogens in Various Treated Wastewater, Rivers, and Streams. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:5296-5307. [PMID: 29580053 DOI: 10.1021/acs.est.7b06147] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In the current study a high sensitive analytical method was developed for the determination of 60 steroids including glucocorticoids (GC), mineralocorticoids (MC), and progestogens (PG) in WWTP effluents and surface water using liquid chromatography with tandem mass spectrometry detection (LC-MS/MS). The limits of quantification (LOQ) ranged between 0.02 ng/L (cortisone) to 0.5 ng/L (drospirenone) in surface water and from 0.05 ng/L (betamethasone) to 5 ng/L (chlormadinone) in treated wastewater. After optimization, the developed method was applied to WWTP effluents, rivers, and streams around Germany. Numerous steroids have been detected during the sampling campaign and predominant analytes from all steroid types were determined. Moreover, the occurrence of dienogest, mometasone furoate, flumethasone pivalate, and the metabolites 6β-hydroxy dienogest, 6β-hydroxy triamcinolone acetonide, 7α-thiomethyl spironolactone, and 11α-hydroxy canrenone is reported for the first time. In addition, this study revealed the ubiquitous presence of topically applied GC monoesters betamethasone propionate, betamethasone valerate, and 6α-methylprednisolone propionate in WWTP effluents and surface water.
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Affiliation(s)
- Alexander Weizel
- Federal Institute of Hydrology , Department of Aquatic Chemistry , 56068 Koblenz , Germany
| | - Michael P Schlüsener
- Federal Institute of Hydrology , Department of Aquatic Chemistry , 56068 Koblenz , Germany
| | - Georg Dierkes
- Federal Institute of Hydrology , Department of Aquatic Chemistry , 56068 Koblenz , Germany
| | - Thomas A Ternes
- Federal Institute of Hydrology , Department of Aquatic Chemistry , 56068 Koblenz , Germany
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20
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Mixture Concentration-Response Modeling Reveals Antagonistic Effects of Estradiol and Genistein in Combination on Brain Aromatase Gene (cyp19a1b) in Zebrafish. Int J Mol Sci 2018; 19:ijms19041047. [PMID: 29614754 PMCID: PMC5979603 DOI: 10.3390/ijms19041047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 03/15/2018] [Accepted: 03/26/2018] [Indexed: 12/02/2022] Open
Abstract
Comprehension of compound interactions in mixtures is of increasing interest to scientists, especially from a perspective of mixture risk assessment. However, most of conducted studies have been dedicated to the effects on gonads, while only few of them were. interested in the effects on the central nervous system which is a known target for estrogenic compounds. In the present study, the effects of estradiol (E2), a natural estrogen, and genistein (GEN), a phyto-estrogen, on the brain ER-regulated cyp19a1b gene in radial glial cells were investigated alone and in mixtures. For that, zebrafish-specific in vitro and in vivo bioassays were used. In U251-MG transactivation assays, E2 and GEN produced antagonistic effects at low mixture concentrations. In the cyp19a1b-GFP transgenic zebrafish, this antagonism was observed at all ratios and all concentrations of mixtures, confirming the in vitro effects. In the present study, we confirm (i) that our in vitro and in vivo biological models are valuable complementary tools to assess the estrogenic potency of chemicals both alone and in mixtures; (ii) the usefulness of the ray design approach combined with the concentration-addition modeling to highlight interactions between mixture components.
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21
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Rai PK, Lee J, Kailasa SK, Kwon EE, Tsang YF, Ok YS, Kim KH. A critical review of ferrate(VI)-based remediation of soil and groundwater. ENVIRONMENTAL RESEARCH 2018; 160:420-448. [PMID: 29073572 DOI: 10.1016/j.envres.2017.10.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/15/2017] [Accepted: 10/09/2017] [Indexed: 05/04/2023]
Abstract
Over the past few decades, diverse chemicals and materials such as mono- and bimetallic nanoparticles, metal oxides, and zeolites have been used for soil and groundwater remediation. Ferrate (FeVIO42-) has been widely employed due to its high-valent iron (VI) oxo compound with high oxidation/reduction potentials. Ferrate has received attention for wide environmental applications including water purification and sewage sludge treatment. Ferrate provides great potential for diverse environmental applications without any environmental problems. Therefore, this paper provides comprehensive information on the recent progress on the use of (FeVIO42-) as a green material for use in sustainable treatment processes, especially for soil and water remediation. We reviewed diverse synthesis recipes for ferrates (FeVIO42-) and their associated physicochemical properties as oxidants, coagulants, and disinfectants for the elimination of a diverse range of chemical and biological species from water/wastewater samples. A summary of the eco-sustainable performance of ferrate(VI) in water remediation is also provided and the future of ferrate(VI) is discussed in this review.
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Affiliation(s)
- Prabhat Kumar Rai
- Department of Environmental Science, Mizoram University, Aizawl 796004, India
| | - Jechan Lee
- Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea
| | - Suresh Kumar Kailasa
- Department of Applied Chemistry, S.V. National Institute of Technology, Surat 395007, Gujarat, India
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea.
| | - Yiu Fai Tsang
- Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong
| | - Yong Sik Ok
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea.
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22
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Mintram KS, Brown AR, Maynard SK, Thorbek P, Tyler CR. Capturing ecology in modeling approaches applied to environmental risk assessment of endocrine active chemicals in fish. Crit Rev Toxicol 2017; 48:109-120. [PMID: 28929839 DOI: 10.1080/10408444.2017.1367756] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Endocrine active chemicals (EACs) are widespread in freshwater environments and both laboratory and field based studies have shown reproductive effects in fish at environmentally relevant exposures. Environmental risk assessment (ERA) seeks to protect wildlife populations and prospective assessments rely on extrapolation from individual-level effects established for laboratory fish species to populations of wild fish using arbitrary safety factors. Population susceptibility to chemical effects, however, depends on exposure risk, physiological susceptibility, and population resilience, each of which can differ widely between fish species. Population models have significant potential to address these shortfalls and to include individual variability relating to life-history traits, demographic and density-dependent vital rates, and behaviors which arise from inter-organism and organism-environment interactions. Confidence in population models has recently resulted in the EU Commission stating that results derived from reliable models may be considered when assessing the relevance of adverse effects of EACs at the population level. This review critically assesses the potential risks posed by EACs for fish populations, considers the ecological factors influencing these risks and explores the benefits and challenges of applying population modeling (including individual-based modeling) in ERA for EACs in fish. We conclude that population modeling offers a way forward for incorporating greater environmental relevance in assessing the risks of EACs for fishes and for identifying key risk factors through sensitivity analysis. Individual-based models (IBMs) allow for the incorporation of physiological and behavioral endpoints relevant to EAC exposure effects, thus capturing both direct and indirect population-level effects.
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Affiliation(s)
- Kate S Mintram
- a College of Life and Environmental Sciences , University of Exeter , Exeter , UK
| | - A Ross Brown
- a College of Life and Environmental Sciences , University of Exeter , Exeter , UK
| | - Samuel K Maynard
- b Syngenta, Jealott's Hill International Research Centre , Bracknell , Berkshire , UK
| | - Pernille Thorbek
- b Syngenta, Jealott's Hill International Research Centre , Bracknell , Berkshire , UK
| | - Charles R Tyler
- a College of Life and Environmental Sciences , University of Exeter , Exeter , UK
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23
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Petersen K, Hultman MT, Bytingsvik J, Harju M, Evenset A, Tollefsen KE. Characterizing cytotoxic and estrogenic activity of Arctic char tissue extracts in primary Arctic char hepatocytes. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2017; 80:1017-1030. [PMID: 28862540 DOI: 10.1080/15287394.2017.1357277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Contaminants from various anthropogenic activities are detected in the Arctic due to long-range atmospheric transport, ocean currents, and living organisms such as migrating fish or seabirds. Although levels of persistent organic pollutants (POPs) in Arctic fish are generally low, local hot spots of contamination were found in freshwater systems such as Lake Ellasjøen at Bjørnøya (Bear Island, Norway). Higher concentrations of organic halogenated compounds (OHC), and higher levels of cytochrome P450 and DNA-double strand breaks were reported in Arctic char (Salvelinus alpinus) from this lake compared to fish from other lakes on Bjørnøya. Although several of the measured contaminants are potential endocrine disrupters, few studies have investigated potential endocrine disruptive effects of the contaminant cocktail in this fish population. The aim of this study was to compare acutely toxic and estrogenic potency of the cocktail of pollutants as evidenced by cytotoxic and/or estrogenic effects in vitro using extracts of Arctic char livers from contaminated Lake Ellasjøen with those from less contaminated Lake Laksvatn at Bjørnøya. This was performed by in situ sampling and contaminant extraction from liver tissue, followed by chemical analysis and in vitro testing of the following contaminated tissue extracts: F1-nonpolar OHC, F2-polar pesticides and metabolites of OHC, and F3-polar OHC. Contaminant levels were highest in extracts from Ellasjøen fish. The F2 and F3 extracts from Lake Laksvatn and Lake Ellasjøen fish reduced in vitro cell viability at a concentration ratio of 0.03-1 relative to tissue concentration in Arctic char. Only the F3 liver extract from Ellasjøen fish increased in vitro vitellogenin protein expression. Although compounds such as estrogenic OH-PCBs were quantified in Ellasjøen F3 extracts, it remains to be determined which compounds were inducing estrogenic effects.
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Affiliation(s)
- Karina Petersen
- a Section of Ecotoxicology , Norwegian Institute for Water Research (NIVA) , Oslo , Norway
| | - Maria T Hultman
- a Section of Ecotoxicology , Norwegian Institute for Water Research (NIVA) , Oslo , Norway
| | - Jenny Bytingsvik
- c Department of Arctic R&D , Akvaplan-niva, Fram Centre , Tromsø , Norway
| | - Mikael Harju
- b Environmental Chemistry Department , Norwegian Institute for Air Research (NILU) , Tromsø , Norway
| | - Anita Evenset
- c Department of Arctic R&D , Akvaplan-niva, Fram Centre , Tromsø , Norway
- d Department of Arctic and Marine Biology , UiT the Arctic University of Norway , Tromsø , Norway
| | - Knut Erik Tollefsen
- a Section of Ecotoxicology , Norwegian Institute for Water Research (NIVA) , Oslo , Norway
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24
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Aguirre-Martínez GV, Reinardy HC, Martín-Díaz ML, Henry TB. Response of gene expression in zebrafish exposed to pharmaceutical mixtures: Implications for environmental risk. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 142:471-479. [PMID: 28458231 DOI: 10.1016/j.ecoenv.2017.04.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 04/15/2017] [Accepted: 04/17/2017] [Indexed: 05/26/2023]
Abstract
Complex mixtures of pharmaceutical chemicals in surface waters indicate potential for mixture effects in aquatic organisms. The objective of the present study was to evaluate whether effects on target gene expression and enzymatic activity of individual substances at environmentally relevant concentrations were additive when mixed. Expression of zebrafish cytochrome P4501A (cyp1a) and vitellogenin (vtg) genes as well as activity of ethoxyresorufin-O-deethylase (EROD) were analyzed after exposure (96h) to caffeine-Caf, ibuprofen-Ibu, and carbamazepine-Cbz (0.05 and 5µM), tamoxifen-Tmx (0.003 and 0.3µM), and after exposure to pharmaceutical mixtures (low mix: 0.05µM of Caf, Ibu, Cbz and 0.003µM of Tmx, and high mix: 5µM of Caf, Ibu, Cbz and 0.3µM of Tmx). Pharmaceuticals tested individually caused significant down regulation of both cyp1a and vtg, but EROD activity was not affected. Exposure to low mix did not cause a significant change in gene expression; however, the high mix caused significant up-regulation of cyp1a but did not affect vtg expression. Up-regulation of cyp1a was consistent with induction of EROD activity in larvae exposed to high mix. The complex mixture induced different responses than those observed by the individual substances. Additive toxicity was not supported, and results indicate the need to evaluate complex mixtures rather than models based on individual effects, since in environment drugs are not found in isolation and the effects of their mixtures is poorly understood.
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Affiliation(s)
- Gabriela V Aguirre-Martínez
- School of Biomedical and Biological Science, 411 Davy Building, University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom; Health Science Faculty, Arturo Prat University, Casilla 121, 1110939 Iquique, Chile; Andalusian Center of Marine Science and Technology (CACYTMAR), Campus Universitario Puerto Real, 11510 Puerto Real, Cádiz, Spain.
| | - Helena C Reinardy
- School of Biomedical and Biological Science, 411 Davy Building, University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom; Department of Arctic Technology, UNIS, Longyearbyen N-9171, Norway
| | - M Laura Martín-Díaz
- Andalusian Center of Marine Science and Technology (CACYTMAR), Campus Universitario Puerto Real, 11510 Puerto Real, Cádiz, Spain; Facultad Ciencias del Mar y Ambientales, Universidad de Cádiz, Campus de Excelencia Internacional del Mar (CEIMAR), Polígono Río San Pedro s/n. P. Real, Cádiz, Spain
| | - Theodore B Henry
- School of Biomedical and Biological Science, 411 Davy Building, University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom; School of Life Sciences, Heriot-Watt University, 3.05 William Perkin Building, Edinburgh EH14 4AS, United Kingdom; Center for Environmental Biotechnology, University of Tennessee, Knoxville TN 37996, USA; Department of Forestry, Wildlife and Fisheries, University of Tennessee, Knoxville, TN 37996, USA.
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Valencia A, Rojo-Bartolomé I, Bizarro C, Cancio I, Ortiz-Zarragoitia M. Alteration in molecular markers of oocyte development and intersex condition in mullets impacted by wastewater treatment plant effluents. Gen Comp Endocrinol 2017; 245:10-18. [PMID: 27296671 DOI: 10.1016/j.ygcen.2016.06.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 05/03/2016] [Accepted: 06/09/2016] [Indexed: 11/20/2022]
Abstract
Wastewater Treatment Plant (WWTP) discharges are an important source of endocrine disrupting chemicals (EDCs) into the aquatic environment. Fish populations inhabiting downstream of WWTP effluents show alterations in gonad and gamete development such as intersex condition, together with xenoestrogenic effects such as vitellogenin up-regulation. However, the molecular mechanisms participating in the development of intersex condition in fish are not elucidated. The aim of this study was to assess the impact of two WWTPs effluents (Gernika and Bilbao-Galindo situated in the South East Bay of Biscay) with different contaminant loads, in thicklip grey mullet (Chelon labrosus) populations inhabiting downstream, examining the presence and severity of intersex condition, during two seasons. Molecular markers of xenoestrogenicity and oocyte differentiation and development (vtgAa, cyp19a1a, cyp19a1b, cyp11b, foxl2, dmrt1 and gtf3a) were also studied. Intersex mullets were identified downstream of both WWTPs and vtgAa was upregulated in intersex and non intersex males. Sex dependent differential transcription levels of target genes were detected in mullets from Galindo. However, no such pattern was observed in mullets from Gernika, suggesting an attenuating effect over studied genes caused by a higher presence of EDCs in this site, as indicated by the elevated prevalence of intersex mullets in this population. In conclusion, no direct association between xenoestrogenic responses and intersex condition was established. Mullets from Gernika showed signs of severe EDC exposure compared to those from Galindo, as demonstrated by the higher prevalence of intersex males and the reduction in transcription profile differences between sexes of gametogenic gene markers.
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Affiliation(s)
- Ainara Valencia
- CBET Research Group, Dep. of Zoology and Animal Cell Biology, Faculty of Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology (PiE-UPV/EHU), University of the Basque Country (UPV/EHU), PO BOX 644, E-48080 Bilbao, Basque Country, Spain
| | - Iratxe Rojo-Bartolomé
- CBET Research Group, Dep. of Zoology and Animal Cell Biology, Faculty of Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology (PiE-UPV/EHU), University of the Basque Country (UPV/EHU), PO BOX 644, E-48080 Bilbao, Basque Country, Spain
| | - Cristina Bizarro
- CBET Research Group, Dep. of Zoology and Animal Cell Biology, Faculty of Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology (PiE-UPV/EHU), University of the Basque Country (UPV/EHU), PO BOX 644, E-48080 Bilbao, Basque Country, Spain
| | - Ibon Cancio
- CBET Research Group, Dep. of Zoology and Animal Cell Biology, Faculty of Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology (PiE-UPV/EHU), University of the Basque Country (UPV/EHU), PO BOX 644, E-48080 Bilbao, Basque Country, Spain
| | - Maren Ortiz-Zarragoitia
- CBET Research Group, Dep. of Zoology and Animal Cell Biology, Faculty of Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology (PiE-UPV/EHU), University of the Basque Country (UPV/EHU), PO BOX 644, E-48080 Bilbao, Basque Country, Spain.
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Lahcen AA, Baleg AA, Baker P, Iwuoha E, Amine A. Synthesis and electrochemical characterization of nanostructured magnetic molecularly imprinted polymers for 17-β-Estradiol determination. SENSORS AND ACTUATORS B: CHEMICAL 2017; 241:698-705. [DOI: 10.1016/j.snb.2016.10.132] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Sijaona CM, Faith PM, Bjarne S, Robinson HM. Pollution by endocrine disrupting estrogens in aquatic ecosystems in Morogoro urban and peri-urban areas in Tanzania. ACTA ACUST UNITED AC 2017. [DOI: 10.5897/ajest2016.2234] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Shaikh N, Taujale S, Zhang H, Artyushkova K, Ali AMS, Cerrato JM. Spectroscopic Investigation of Interfacial Interaction of Manganese Oxide with Triclosan, Aniline, and Phenol. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:10978-10987. [PMID: 27668521 DOI: 10.1021/acs.est.6b02673] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We investigated the reaction of manganese oxide [MnOx(s)] with phenol, aniline, and triclosan in batch experiments using X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and aqueous chemistry measurements. Analyses of XPS high-resolution spectra suggest that the Mn(III) content increased 8-10% and the content of Mn(II) increased 12-15% in the surface of reacted MnOx(s) compared to the control, indicating that the oxidation of organic compounds causes the reduction of MnOx(s). Fitting of C 1s XPS spectra suggests an increase in the number of aromatic and aliphatic bonds for MnOx(s) reacted with organic compounds. The presence of 2.7% Cl in the MnOx(s) surface after reaction with triclosan was detected by XPS survey scans, while no Cl was detected in MnOx-phenol, MnOx-aniline, and MnOx-control. Raman spectra confirm the increased intensity of carbon features in MnOx(s) samples that reacted with organic compounds compared to unreacted MnOx(s). These spectroscopy results indicate that phenol, aniline, triclosan, and related byproducts are associated with the surface of MnOx(s)-reacted samples. The results from this research contribute to a better understanding of interactions between MnOx(s) and organic compounds that are relevant to natural and engineered environments.
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Affiliation(s)
- Nabil Shaikh
- Department of Civil Engineering, University of New Mexico , MSC01 1070, Albuquerque, New Mexico 87131, United States
| | - Saru Taujale
- Department of Civil and Environmental Engineering, Temple University , 1947 North 12th Street, Philadelphia, Pennsylvania 19122, United States
| | - Huichun Zhang
- Department of Civil and Environmental Engineering, Temple University , 1947 North 12th Street, Philadelphia, Pennsylvania 19122, United States
| | - Kateryna Artyushkova
- Department of Chemical Engineering, University of New Mexico , MSC01 1120, Albuquerque, New Mexico 87131, United States
| | - Abdul-Mehdi S Ali
- Department of Earth and Planetary Sciences, University of New Mexico , MSC03 2040, Albuquerque, New Mexico 87131, United States
| | - José M Cerrato
- Department of Civil Engineering, University of New Mexico , MSC01 1070, Albuquerque, New Mexico 87131, United States
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Hinfray N, Tebby C, Garoche C, Piccini B, Bourgine G, Aït-Aïssa S, Kah O, Pakdel F, Brion F. Additive effects of levonorgestrel and ethinylestradiol on brain aromatase ( cyp19a1b ) in zebrafish specific in vitro and in vivo bioassays. Toxicol Appl Pharmacol 2016; 307:108-114. [DOI: 10.1016/j.taap.2016.07.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 07/25/2016] [Accepted: 07/30/2016] [Indexed: 10/21/2022]
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30
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Goh SXL, Duarah A, Zhang L, Snyder SA, Lee HK. Online solid phase extraction with liquid chromatography–tandem mass spectrometry for determination of estrogens and glucocorticoids in water. J Chromatogr A 2016; 1465:9-19. [DOI: 10.1016/j.chroma.2016.08.040] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 08/16/2016] [Accepted: 08/17/2016] [Indexed: 10/21/2022]
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31
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Baldwin AK, Corsi SR, De Cicco LA, Lenaker PL, Lutz MA, Sullivan DJ, Richards KD. Organic contaminants in Great Lakes tributaries: Prevalence and potential aquatic toxicity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 554-555:42-52. [PMID: 26950618 DOI: 10.1016/j.scitotenv.2016.02.137] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 02/18/2016] [Accepted: 02/19/2016] [Indexed: 05/24/2023]
Abstract
Organic compounds used in agriculture, industry, and households make their way into surface waters through runoff, leaking septic-conveyance systems, regulated and unregulated discharges, and combined sewer overflows, among other sources. Concentrations of these organic waste compounds (OWCs) in some Great Lakes tributaries indicate a high potential for adverse impacts on aquatic organisms. During 2010-13, 709 water samples were collected at 57 tributaries, together representing approximately 41% of the total inflow to the lakes. Samples were collected during runoff and low-flow conditions and analyzed for 69 OWCs, including herbicides, insecticides, polycyclic aromatic hydrocarbons, plasticizers, antioxidants, detergent metabolites, fire retardants, non-prescription human drugs, flavors/fragrances, and dyes. Urban-related land cover characteristics were the most important explanatory variables of concentrations of many OWCs. Compared to samples from nonurban watersheds (<15% urban land cover) samples from urban watersheds (>15% urban land cover) had nearly four times the number of detected compounds and four times the total sample concentration, on average. Concentration differences between runoff and low-flow conditions were not observed, but seasonal differences were observed in atrazine, metolachlor, DEET, and HHCB concentrations. Water quality benchmarks for individual OWCs were exceeded at 20 sites, and at 7 sites benchmarks were exceeded by a factor of 10 or more. The compounds with the most frequent water quality benchmark exceedances were the PAHs benzo[a]pyrene, pyrene, fluoranthene, and anthracene, the detergent metabolite 4-nonylphenol, and the herbicide atrazine. Computed estradiol equivalency quotients (EEQs) using only nonsteroidal endocrine-active compounds indicated medium to high risk of estrogenic effects (intersex or vitellogenin induction) at 10 sites. EEQs at 3 sites were comparable to values reported in effluent. This multifaceted study is the largest, most comprehensive assessment of the occurrence and potential effects of OWCs in the Great Lakes Basin to date.
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Affiliation(s)
- Austin K Baldwin
- U.S. Geological Survey, 8505 Research Way, Middleton, WI, 53562, USA.
| | - Steven R Corsi
- U.S. Geological Survey, 8505 Research Way, Middleton, WI, 53562, USA
| | - Laura A De Cicco
- U.S. Geological Survey, 8505 Research Way, Middleton, WI, 53562, USA
| | - Peter L Lenaker
- U.S. Geological Survey, 8505 Research Way, Middleton, WI, 53562, USA
| | - Michelle A Lutz
- U.S. Geological Survey, 8505 Research Way, Middleton, WI, 53562, USA
| | - Daniel J Sullivan
- U.S. Geological Survey, 8505 Research Way, Middleton, WI, 53562, USA
| | - Kevin D Richards
- U.S. Geological Survey, 8505 Research Way, Middleton, WI, 53562, USA
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Bradley PM, Battaglin WA, Iwanowicz LR, Clark JM, Journey CA. Aerobic biodegradation potential of endocrine-disrupting chemicals in surface-water sediment at Rocky Mountain National Park, USA. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2016; 35:1087-1096. [PMID: 26588039 DOI: 10.1002/etc.3266] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 08/24/2015] [Accepted: 09/30/2015] [Indexed: 06/05/2023]
Abstract
Endocrine-disrupting chemicals (EDCs) in surface water and bed sediment threaten the structure and function of aquatic ecosystems. In natural, remote, and protected surface-water environments where contaminant releases are sporadic, contaminant biodegradation is a fundamental driver of exposure concentration, timing, duration, and, thus, EDC ecological risk. Anthropogenic contaminants, including known and suspected EDCs, were detected in surface water and sediment collected from 2 streams and 2 lakes in Rocky Mountain National Park (Colorado, USA). The potential for aerobic EDC biodegradation was assessed in collected sediments using 6 (14) C-radiolabeled model compounds. Aerobic microbial mineralization of natural (estrone and 17β-estradiol) and synthetic (17α-ethinylestradiol) estrogen was significant at all sites. Bed sediment microbial communities in Rocky Mountain National Park also effectively degraded the xenoestrogens bisphenol-A and 4-nonylphenol. The same sediment samples exhibited little potential for aerobic biodegradation of triclocarban, however, illustrating the need to assess a wider range of contaminant compounds. The present study's results support recent concerns over the widespread environmental occurrence of carbanalide antibacterials, like triclocarban and triclosan, and suggest that backcountry use of products containing these compounds should be discouraged.
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Affiliation(s)
- Paul M Bradley
- South Atlantic Water Science Center, US Geological Survey, Columbia, South Carolina, USA
| | | | - Luke R Iwanowicz
- Leetown Science Center, US Geological Survey, Kearneysville, West Virginia, USA
| | - Jimmy M Clark
- South Atlantic Water Science Center, US Geological Survey, Columbia, South Carolina, USA
| | - Celeste A Journey
- South Atlantic Water Science Center, US Geological Survey, Columbia, South Carolina, USA
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Heffron KT, Gaines KF, Novak JM, Canam T, Collard DA. 17β-Estradiol influent and effluent concentrations in wastewater: demographic influences and the risk to environmental health. ENVIRONMENTAL MONITORING AND ASSESSMENT 2016; 188:288. [PMID: 27075313 DOI: 10.1007/s10661-016-5292-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 04/05/2016] [Indexed: 06/05/2023]
Abstract
The concentration of 17β-estradiol (E2) was measured through stages of wastewater treatment at a central Illinois wastewater treatment plant (WWTP). E2 concentration was quantified using a competitive enzyme-linked immunosorbent assay (ELISA). The concentration of E2 was compared with demographic effects of a university; physical parameters of the wastewater (dissolved oxygen, pH, and temperature); and daily influent and effluent flow rates. Effluent concentrations ranged from 0 to 25.3 ng L(-1) with an average discharge of 3.6 ng L(-1). E2 concentration was shown to increase at the start of each university semester; however, this trend was not observed in the summer sessions. Low influent and effluent flow rates, which correspond to increased water retention time at the WWTP, were correlated to increased removal efficiency of E2, where low flow was linked to 91 % removal efficiency and high flow with 58 % removal efficiency. This study concludes that E2 was being discharged at concentrations known to cause ecological risk, and that the demographic changes in a university student body had a significant effect on E2 concentration throughout the treatment process.
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Affiliation(s)
- K T Heffron
- Department of Biological Sciences, Eastern Illinois University, 600 Lincoln Ave, Charleston, IL, 61920, USA
| | - K F Gaines
- Department of Biological Sciences, Eastern Illinois University, 600 Lincoln Ave, Charleston, IL, 61920, USA.
| | - J M Novak
- Department of Biological Sciences, Eastern Illinois University, 600 Lincoln Ave, Charleston, IL, 61920, USA
| | - T Canam
- Department of Biological Sciences, Eastern Illinois University, 600 Lincoln Ave, Charleston, IL, 61920, USA
| | - D A Collard
- City of Charleston Wastewater Treatment Plant, Charleston, IL, 61920, USA
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Bradley PM, Journey CA, Clark J. Effect of Wastewater Treatment Facility Closure on Endocrine Disrupting Chemicals in a Coastal Plain Stream. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/rem.21455] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Paul M. Bradley
- U.S. Geological Survey, South Atlantic Water Science Center in Columbia, South Carolina
| | | | - Jimmy Clark
- U.S. Geological Survey, South Atlantic Water Science Center in Columbia, South Carolina
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35
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Wigh A, Devaux A, Brosselin V, Gonzalez-Ospina A, Domenjoud B, Aït-Aïssa S, Creusot N, Gosset A, Bazin C, Bony S. Proposal to optimize ecotoxicological evaluation of wastewater treated by conventional biological and ozonation processes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:3008-3017. [PMID: 26400245 DOI: 10.1007/s11356-015-5419-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 09/14/2015] [Indexed: 06/05/2023]
Abstract
A mixture of urban and hospital effluents (50% v/v) was evaluated for ecotoxicity with an advanced bioassay battery. Mixed effluents were tested before any treatment, after biological treatment alone, and after biological treatment followed by a tertiary ozonation (15 mg O3/L). Laying a high value on the continuance of organisms' fitness, essential to preserve a healthy receiving ecosystem, the main objective of this study was to combine normalized bioassays with newly developed in vivo and in vitro tests in order to assess alteration of embryo development, growth and reproduction, as well as genotoxic effects in aquatic organisms exposed to complex wastewater effluents. Comparison of the bioassays sensitivity was considered. Contrary to the lack of toxicity observed with normalized ecotoxicity tests, endpoints measured on zebrafish embryos such as developmental abnormalities and genotoxicity demonstrated a residual toxicity in wastewater both after a biological treatment followed or not by a tertiary O3 treatment. However, the ozonation step allowed to alleviate the residual endocrine disrupting potential measure in the biologically treated effluent. This study shows that normalized bioassays are not sensitive enough for the ecotoxicological evaluation of wastewaters and that there is a great need for the development of suitable sensitive bioassays in order to characterize properly the possible residual toxicity of treated effluents.
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Affiliation(s)
- Adriana Wigh
- UMR 5023 LEHNA, INRA, ENTPE, rue Maurice Audin, 69518, Vaulx-en-Velin Cedex, France
| | - Alain Devaux
- UMR 5023 LEHNA, INRA, ENTPE, rue Maurice Audin, 69518, Vaulx-en-Velin Cedex, France
| | - Vanessa Brosselin
- UMR 5023 LEHNA, INRA, ENTPE, rue Maurice Audin, 69518, Vaulx-en-Velin Cedex, France
| | - Adriana Gonzalez-Ospina
- SUEZ Traitement de l'eau, Direction Technique Innovation, Degrémont SAS 183, avenue du 18 juin 1940, 92508, Rueil-Malmaison, France
| | - Bruno Domenjoud
- SUEZ Traitement de l'eau, Direction Technique Innovation, Degrémont SAS 183, avenue du 18 juin 1940, 92508, Rueil-Malmaison, France
| | - Selim Aït-Aïssa
- INERIS, Unité d'Ecotoxicologie in vitro et in vivo (ECOT), BP2, 60550, Verneuil-en-Halatte, France
| | - Nicolas Creusot
- INERIS, Unité d'Ecotoxicologie in vitro et in vivo (ECOT), BP2, 60550, Verneuil-en-Halatte, France
| | - Antoine Gosset
- UMR 5023 LEHNA, INRA, ENTPE, rue Maurice Audin, 69518, Vaulx-en-Velin Cedex, France
| | - Christine Bazin
- PROVADEMSE, Boulevard Niels Bohr, CS 52132, 69603, Villeurbanne Cedex, France
| | - Sylvie Bony
- UMR 5023 LEHNA, INRA, ENTPE, rue Maurice Audin, 69518, Vaulx-en-Velin Cedex, France.
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Örn S, Holbech H, Norrgren L. Sexual disruption in zebrafish (Danio rerio) exposed to mixtures of 17α-ethinylestradiol and 17β-trenbolone. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 41:225-231. [PMID: 26734721 DOI: 10.1016/j.etap.2015.12.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 12/15/2015] [Accepted: 12/16/2015] [Indexed: 06/05/2023]
Abstract
Environmental estrogens and androgens can be present simultaneously in aquatic environments and thereby interact to disturb multiple physiological systems in organisms. Studies on interaction effects in fish of androgenic and estrogenic chemicals are limited. Therefore, the aim of the present study was to evaluate feminization and masculinization effects in zebrafish (Danio rerio) exposed to combinations of two synthetic steroid hormones detected in environmental waters: the androgen 17β-trenbolone (Tb) and the oestrogen 17α-ethinylestradiol (EE2). Juvenile zebrafish were exposed between days 20 and 60 post-hatch to different binary mixtures of Tb (1, 10, and 50 ng/L) and EE2 (2 and 5 ng/L). The endpoints studied were whole-body homogenate vitellogenin concentration at 40 days post-hatch, and sex ratio including gonad maturation at 60 days post-hatch. The feminizing potency of 5 ng/L of EE2, alone as well as in combination with Tb, was clear in the present study, with exposures resulting in almost all-female populations and females being sexually immature. Masculinization effects with male-biased sex ratios were observed when fish were exposed to 2 ng/L of EE2 in combination with Tb concentrations. Intersex fish were observed after exposure to mixtures of 2 ng/L EE2 with 50 ng/L Tb. Sexual maturity generally increased among males at increasing concentrations of Tb. The results of the present study show that exposure to environmentally relevant mixtures of an oestrogen and androgen affects the process of gonad differentiation in zebrafish and lead to sexual disruption.
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Affiliation(s)
- Stefan Örn
- Department of Biomedical Sciences & Veterinary Public Health, Swedish University of Agricultural Sciences, P.O. Box 7028, SE-75007 Uppsala, Sweden.
| | - Henrik Holbech
- Department of Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
| | - Leif Norrgren
- Department of Biomedical Sciences & Veterinary Public Health, Swedish University of Agricultural Sciences, P.O. Box 7028, SE-75007 Uppsala, Sweden
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Reddy TV, Flick R, Lazorchak JM, Smith ME, Wiechman B, Lattier DL. Experimental paradigm for in-laboratory proxy aquatic studies under conditions of static, non-flow-through chemical exposures. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2015; 34:2796-2802. [PMID: 26088724 DOI: 10.1002/etc.3121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 12/30/2014] [Accepted: 06/12/2015] [Indexed: 06/04/2023]
Abstract
Endocrine-disrupting chemicals (EDCs) such as 17α-ethynylestradiol, 17β-estradiol, estrone, and para-nonylphenol have been measured in wastewater-treatment plant effluents, surface waters, sediments, and sludge and have been shown to induce liver-specific vitellogenin (vtg) messenger RNA in male fathead minnows (Pimephales promelas). The purpose of the present study was to establish minimal concentrations of select EDCs necessary to induce transcription of vtg in 48-h static renewal exposures, as measured by quantitative real-time thermal cycle amplification. Adult males were exposed to 17α-ethynylestradiol, 17β-estradiol, estrone, and para-nonylphenol. Dose-dependent increases in vtg expression were significant with all chemicals tested. The lowest concentrations of these chemicals to induce measurable vtg expression, with significant difference from respective controls, were 17α-ethynylestradiol, 2.2 ng L(-1); para-nonylphenol, 13.9 μg L(-1); 17β-estradiol, 42.7 ng L(-1); and estrone, 46.7 ng L(-1), measured as 48-h average concentrations. The present experiments were designed to frame a commonly acceptable approach for investigators who conduct static, in-laboratory proxy environmental aquatic exposures. The present study highlights the need for investigators to report in peer-reviewed submissions the observed concentration values for minimal induction levels when measuring molecular responses to chemical exposures by means of real-time polymerase chain reaction, quantitative polymerase chain reaction, or other "omic" technologies.
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Affiliation(s)
- Tirumuru V Reddy
- National Exposure Research Laboratory, US Environmental Protection Agency, Cincinnati, Ohio
| | - Robert Flick
- National Exposure Research Laboratory, US Environmental Protection Agency, Cincinnati, Ohio
| | - James M Lazorchak
- National Exposure Research Laboratory, US Environmental Protection Agency, Cincinnati, Ohio
| | - Mark E Smith
- Dynamac, US Environmental Protection Agency, Cincinnati, Ohio
| | - Barry Wiechman
- Dynamac, US Environmental Protection Agency, Cincinnati, Ohio
| | - David L Lattier
- National Exposure Research Laboratory, US Environmental Protection Agency, Cincinnati, Ohio
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Smith AJ, McGowan T, Devlin MJ, Massoud MS, Al-Enezi M, Al-Zaidan AS, Al-Sarawi HA, Lyons BP. Screening for contaminant hotspots in the marine environment of Kuwait using ecotoxicological and chemical screening techniques. MARINE POLLUTION BULLETIN 2015; 100:681-688. [PMID: 26478454 DOI: 10.1016/j.marpolbul.2015.08.043] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 08/11/2015] [Accepted: 08/31/2015] [Indexed: 06/05/2023]
Abstract
Kuwait is a country with low rainfall and highly concentrated industrial and domestic effluents entering its coastal waters. These can be both treated and untreated. In this study we sampled a series of coastal and open-sea sites and used a variety of analyses to identify those sites requiring the most attention. We used a high throughput GC-MS screen to look for over 1000 chemicals in the samples. Estrogen and androgen screens assessed the potential to disrupt endocrine activity. An oyster embryo development screen was used to assess biological effect potential. The chemical screen identified sites which had high numbers of identified industrial and domestic chemicals. The oyster screen showed that these sites had also caused high levels of developmental abnormalities with 100% of embryos affected at some sites. The yeast screen showed that estrogenic chemicals were present in outfalls at 2-3 ng/l E2 equivalent, and detectable even in some open water sites.
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Affiliation(s)
- A J Smith
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft Laboratory, Pakefield Road, Lowestoft, Suffolk, NR33 0HT, UK.
| | - T McGowan
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft Laboratory, Pakefield Road, Lowestoft, Suffolk, NR33 0HT, UK
| | - M J Devlin
- James Cook University, Catchment Reef Research Group, TropWater, Townsville, QLD 4811, Australia
| | - M S Massoud
- Kuwait Environment Public Authority, P.O. Box 24395, Safat 13104, Kuwait
| | - M Al-Enezi
- Kuwait Environment Public Authority, P.O. Box 24395, Safat 13104, Kuwait
| | - A S Al-Zaidan
- Kuwait Environment Public Authority, P.O. Box 24395, Safat 13104, Kuwait
| | - H A Al-Sarawi
- Kuwait Environment Public Authority, P.O. Box 24395, Safat 13104, Kuwait
| | - B P Lyons
- Cefas, Weymouth laboratory, Barrack Road, Weymouth, Dorset DT4 8UB, UK
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Xia L, Zheng L, Zhou JL. Transcriptional and morphological effects of tamoxifen on the early development of zebrafish (Danio rerio). J Appl Toxicol 2015; 36:853-62. [PMID: 26584595 DOI: 10.1002/jat.3257] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Revised: 09/26/2015] [Accepted: 09/29/2015] [Indexed: 11/10/2022]
Abstract
Tamoxifen is a widely used anticancer drug with both an estrogen agonist and antagonist effect. This study focused on its endocrine disrupting effect, and overall environmental significance. Zebrafish embryos were exposed to different concentrations (0.5, 5, 50 and 500 µg l(-1) ) of tamoxifen for 96 h. The results showed a complex effect of tamoxifen on zebrafish embryo development. For the 500 µg l(-1) exposure group, the heart rate was decreased by 20% and mild defects in caudal fin and skin were observed. Expressions of a series of genes related to endocrine and morphological changes were subsequently tested through quantitative real-time polymerase chain reaction. Bisphenol A as a known estrogen was also tested as an endocrine-related comparison. Among the expression of endocrine-related genes, esr1, ar, cyp19a1b, hsd3b1 and ugt1a1 were all increased by tamoxifen exposure, similar to bisphenol A. The cyp19a1b is a key gene that controls estrogen synthesis. Exposure to 0.5, 5, 50 and 500 µg l(-1) of tamoxifen caused upregulation of cyp19a1b expression to 152%, 568%, 953% and 2024% compared to controls, higher than the effects from the same concentrations of bisphenol A treatment, yet vtg1 was suppressed by 24% from exposure to 500 µg l(-1) tamoxifen. The expression of metabolic-related genes such as cyp1a, cyp1c2, cyp3a65, gpx1a, gstp1, gsr and genes related to observed morphological changes such as krt17 were also found to be upregulated by high concentrations of tamoxifen. These findings indicated the potential environmental effect of tamoxifen on teleost early development. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Liang Xia
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 Zhongshan North Road, Shanghai, 200062, China
| | - Liang Zheng
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 Zhongshan North Road, Shanghai, 200062, China
| | - Jun Liang Zhou
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 Zhongshan North Road, Shanghai, 200062, China
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Zhang Y, Krysl RG, Ali JM, Snow DD, Bartelt-Hunt SL, Kolok AS. Impact of Sediment on Agrichemical Fate and Bioavailability to Adult Female Fathead Minnows: A Field Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:9037-9047. [PMID: 26151375 DOI: 10.1021/acs.est.5b01464] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Precipitation induced runoff is an important pathway for agrichemicals to enter surface water systems and expose aquatic organisms to endocrine-disrupting compounds such as pesticides and steroid hormones. The objectives of this study were to investigate the distribution of agrichemicals between dissolved and sediment-bound phases during spring pulses of agrichemicals and to evaluate the role of suspended sediment in agrichemical bioavailability to aquatic organisms. To accomplish these objectives, suspended sediment and water samples were collected every 3 days from a field site along the Elkhorn River, located at the downstream end of a heavily agricultural watershed, and were screened for 21 pesticides and 21 steroids. Adult female fathead minnows (Pimephales promelas) were exposed in field mesocosms to river water containing varying sediment loads. Changes in organism hepatic gene expression of two estrogen-responsive genes, vitellogenin (VTG) and estrogen receptor alpha (ERα), as well as the androgen receptor (AR) were analyzed during periods of both low and high river discharge. Trends in agrichemical concentrations of both the dissolved and sediment phases as a function of time show that, while sediment may act as both a source and a sink for agrichemicals following precipitation events, the overall driver for molecular defeminization in this system is direct exposure to the sediment-associated compounds. This study suggests that endocrine disrupting effects observed in organisms in turbid water could be attributed to direct exposure of contaminated sediment.
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Affiliation(s)
- Yun Zhang
- †Department of Civil Engineering, Peter Kiewit Institute, University of Nebraska-Lincoln, Omaha, Nebraska 68182-0178, United States
| | - Ryan G Krysl
- ‡Department of Biology, University of Nebraska at Omaha, 6001 Dodge Street, Omaha, Nebraska 68182-0040, United States
| | - Jonathan M Ali
- §Department of Environmental, Agricultural and Occupational Health, University of Nebraska-Medical Center, 986805 Nebraska Medical Center, Omaha, Nebraska 68198-6805, United States
| | - Daniel D Snow
- ∥School of Natural Resources and Nebraska Water Center, University of Nebraska-Lincoln, Lincoln, Nebraska 68583-0844, United States
| | - Shannon L Bartelt-Hunt
- †Department of Civil Engineering, Peter Kiewit Institute, University of Nebraska-Lincoln, Omaha, Nebraska 68182-0178, United States
| | - Alan S Kolok
- ‡Department of Biology, University of Nebraska at Omaha, 6001 Dodge Street, Omaha, Nebraska 68182-0040, United States
- §Department of Environmental, Agricultural and Occupational Health, University of Nebraska-Medical Center, 986805 Nebraska Medical Center, Omaha, Nebraska 68198-6805, United States
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41
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Verderame M, Limatola E. Interferences of an environmental pollutant with estrogen-like action in the male reproductive system of the terrestrial vertebrate Podarcis sicula. Gen Comp Endocrinol 2015; 213:9-15. [PMID: 25680815 DOI: 10.1016/j.ygcen.2015.01.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 01/27/2015] [Accepted: 01/31/2015] [Indexed: 12/30/2022]
Abstract
Nonylphenol (NP) is classified among the endocrine disruptor chemicals with estrogen-like properties. It is widely used in many industries and to dilute pesticides in agriculture, and is known to affect the reproductive system of many aquatic and semi-aquatic organisms. This study aimed to verify how NP, administered via food and water, may interfere with the reproductive cycle of a terrestrial vertebrate. Our model was the male Italian wall lizard Podarcis sicula, a seasonal breeding species that may be naturally exposed to environmental pollution. From our findings it emerges that an NP-polluted diet administered during the mating period causes in this lizard a slowdown of spermatogenesis and affects the testicular and epididymal structure, making it similar to that of the non-reproductive period. The distribution in the testis and epididymis of mRNA for steroid hormone receptors, i.e., estrogen α and β and androgen receptors, was also investigated. NP treatment inhibits the expression of AR, ERα, and ERβ-mRNA in spermatogonia and primary spermatocytes and causes a switch-off of the secretory activity of the epididymal corpus by inducing the expression of ERα.
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Affiliation(s)
- Mariailaria Verderame
- Department of Biology, University of Naples "Federico II", via Mezzocannone 8, 80134 Naples, Italy.
| | - Ermelinda Limatola
- Department of Biology, University of Naples "Federico II", via Mezzocannone 8, 80134 Naples, Italy.
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42
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Green C, Brian J, Kanda R, Scholze M, Williams R, Jobling S. Environmental concentrations of anti-androgenic pharmaceuticals do not impact sexual disruption in fish alone or in combination with steroid oestrogens. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2015; 160:117-127. [PMID: 25630045 DOI: 10.1016/j.aquatox.2014.12.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 11/28/2014] [Accepted: 12/29/2014] [Indexed: 06/04/2023]
Abstract
Sexual disruption in wild fish has been linked to the contamination of river systems with steroid oestrogens, including the pharmaceutical 17α-ethinylestradiol, originating from domestic wastewaters. As analytical chemistry has advanced, more compounds derived from the human use of pharmaceuticals have been identified in the environment and questions have arisen as to whether these additional pharmaceuticals may also impact sexual disruption in fish. Indeed, pharmaceutical anti-androgens have been shown to induce such effects under laboratory conditions. These are of particular interest since anti-androgenic biological activity has been identified in the aquatic environment and is potentially implicated in sexual disruption alone and in combination with steroid oestrogens. Consequently, predictive modelling was employed to determine the concentrations of two anti-androgenic human pharmaceuticals, bicalutamide and cyproterone acetate, in UK sewage effluents and river catchments and their combined impacts on sexual disruption were then assessed in two fish models. Crucially, fish were also exposed to the anti-androgens in combination with steroid oestrogens to determine whether they had any additional impact on oestrogen induced feminisation. Modelling predicted that the anti-androgenic pharmaceuticals were likely to be widespread in UK river catchments. However, their concentrations were not sufficient to induce significant responses in plasma vitellogenin concentrations, secondary sexual characteristics or gross indices in male fathead minnow or intersex in Japanese medaka alone or in combination with steroid oestrogens. However, environmentally relevant mixtures of oestrone, 17β-oestradiol and 17α-ethinylestradiol did induce vitellogenin and intersex, supporting their role in sexual disruption in wild fish populations. Unexpectedly, a male dominated sex ratio (100% in controls) was induced in medaka and the potential cause and implications are briefly discussed, highlighting the potential of non-chemical modes of action on this endpoint.
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Affiliation(s)
- Christopher Green
- Institute of Environment, Health and Societies, Brunel University, Uxbridge, Middlesex UB8 3PH, UK.
| | - Jayne Brian
- Institute of Environment, Health and Societies, Brunel University, Uxbridge, Middlesex UB8 3PH, UK
| | - Rakesh Kanda
- Institute of Environment, Health and Societies, Brunel University, Uxbridge, Middlesex UB8 3PH, UK
| | - Martin Scholze
- Institute of Environment, Health and Societies, Brunel University, Uxbridge, Middlesex UB8 3PH, UK
| | - Richard Williams
- Centre for Ecology and Hydrology, Wallingford, Oxfordshire OX10 8BB, UK
| | - Susan Jobling
- Institute of Environment, Health and Societies, Brunel University, Uxbridge, Middlesex UB8 3PH, UK
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43
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Huang B, Sun W, Li X, Liu J, Li Q, Wang R, Pan X. Effects and bioaccumulation of 17β-estradiol and 17α-ethynylestradiol following long-term exposure in crucian carp. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 112:169-76. [PMID: 25463868 DOI: 10.1016/j.ecoenv.2014.11.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 11/01/2014] [Accepted: 11/07/2014] [Indexed: 05/14/2023]
Abstract
Bioaccumulation and effects of 17β-estradiol (E2) and 17α-ethynylestradiol (EE2) were assessed by crucian carp (Carassius auratus) following single and binary mixture exposures in flow-through exposure system for 16 months. In comparison with water control (DWC) and solvent control (SC), a significant reduction in body weight, body length and gonadosomatic index (GSI), and increase in hepatosomatic index (HSI) and plasma vitellogenin (VTG) levels were observed, in a time- and concentration-dependent manner. Bioconcentration factors (BCFs) of E2 and EE2 in fish muscle ranged from 3.2 to 40 and from 64 to 123, respectively. Crucian carp were found to be more sensitive to EE2 than E2. The bioaccumulation and toxicological effects in binary mixture exposed fish (mixture of E2 and EE2) were more significant than exposure of individual compound. Crucian carp is sensitive to E2 and EE2 in long-term laboratory exposure experiments and can be used as a potential model species for investigating the toxicity of hormones.
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Affiliation(s)
- Bin Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500 Yunnan, PR China
| | - Wenwen Sun
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500 Yunnan, PR China
| | - Xiaoman Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500 Yunnan, PR China
| | - Jingliang Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500 Yunnan, PR China
| | - Qiang Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500 Yunnan, PR China
| | - Renmin Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500 Yunnan, PR China
| | - Xuejun Pan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500 Yunnan, PR China.
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44
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Morthorst JE, Brande-Lavridsen N, Korsgaard B, Bjerregaard P. 17β-estradiol causes abnormal development in embryos of the viviparous eelpout. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:14668-14676. [PMID: 25380199 DOI: 10.1021/es5046698] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Elevated frequencies of malformations among the offspring of Baltic eelpout (Zoarces viviparus) have been observed in aquatic environments receiving high anthropogenic input suggesting that manmade chemicals could be the causative agent. However, causal links between exposure to chemicals and abnormal development have never been confirmed in laboratory experiments. The purpose of this study was to investigate if exposure to 17β-estradiol (E2) causes abnormal development in larvae of the viviparous eelpout. Wild female eelpout were collected immediately after fertilization and exposed to E2 concentrations ranging from 5.7 to 133 ng L(-1) for 6 weeks in a flow through test system. The experiment shows that E2 concentrations of 53.6 and 133 ng L(-1) cause severe abnormal development among eelpout embryos. Reduced amount of ovarian fluid and increased weight of the ovarian sac indicate disturbance of ovarian function. Female plasma concentrations of E2 and vitellogenin increase in a monotonic concentration-response relationship with significant induction in the low concentration range. Our findings support the plausibility that the abnormal development among eelpout embryos encountered in monitoring programs may actually be caused by exposure to chemicals in the environment.
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Affiliation(s)
- Jane E Morthorst
- Department of Biology, University of Southern Denmark , Campusvej 55, Odense M, DK-5230, Denmark
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45
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Wu F, Lin L, Qiu JW, Chen H, Weng S, Luan T. Complex effects of two presumably antagonistic endocrine disrupting compounds on the goldfish Carassius aumtus: a comprehensive study with multiple toxicological endpoints. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 155:43-51. [PMID: 24974122 DOI: 10.1016/j.aquatox.2014.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 06/06/2014] [Accepted: 06/08/2014] [Indexed: 06/03/2023]
Abstract
We studied the effects of endocrine disrupting compounds nonylphenol (NP) and letrozole (LE) on the male goldfish Carassius aumtus. Exposure to NP (20 μg l(-1)) alone caused a significant up-regulation in the expression of aromatase, estrogen receptors and vitellogenin (VTG) genes, an increase in hepatic and plasma VTG concentration, but no obvious testicular impairment. Exposure to LE (1 mg kg(-1)) alone resulted in a significant decline in aromatase activity, reduced levels of plasma 17β-estradiol (E2), and enhanced sperm maturation. Co-exposure with LE (1 mg kg(-1)) could only partially affect some of the estrogenic effects caused by NP (20 μg l(-1)) (i.e. expression of hepatic and brain estrogen receptor genes, hepatic VTG concentration), but inhibit other estrogenic effects (i.e. brain and testicular aromatase activity, plasma E2). In addition, co-exposure resulted in impairment of liver mitochondria (i.e. detachment of ridges from the membrane, and uneven distribution of the cytoplasm with clusters of glycogen granules), but did not cause significant damage to the testes (i.e. the morphology, the spermatogonia and spermatozoa densities). Our results clearly showed that nonylphenol and letrozole co-exposure could induce profound effects on fish, and highlighted the importance of adopting multiple toxicological endpoints when evaluating the combined effects of endocrine disrupting compounds.
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Affiliation(s)
- Fengxia Wu
- MOE Key Laboratory of Aquatic Product Safety, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Li Lin
- MOE Key Laboratory of Aquatic Product Safety, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Jian-Wen Qiu
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Hao Chen
- MOE Key Laboratory of Aquatic Product Safety, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Shaoping Weng
- MOE Key Laboratory of Aquatic Product Safety, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Tiangang Luan
- MOE Key Laboratory of Aquatic Product Safety, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
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46
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Beyer J, Petersen K, Song Y, Ruus A, Grung M, Bakke T, Tollefsen KE. Environmental risk assessment of combined effects in aquatic ecotoxicology: a discussion paper. MARINE ENVIRONMENTAL RESEARCH 2014; 96:81-91. [PMID: 24246633 DOI: 10.1016/j.marenvres.2013.10.008] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 10/17/2013] [Accepted: 10/25/2013] [Indexed: 05/22/2023]
Abstract
Environmental regulatory edicts within the EU, such as the regulatory framework for chemicals REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals), the Water Framework Directive (WFD), and the Marine Strategy Framework Directive (MSFD) focus mainly on toxicity assessment of individual chemicals although the effect of contaminant mixtures is a matter of increasing concern. This discussion paper provides an overview of the field of combined effects in aquatic ecotoxicology and addresses some of the major challenges related to assessment of combined effects in connection with environmental risk assessment (ERA) and regulation. Potentials and obstacles related to different experimental, modelling and predictive ERA approaches are described. On-going ERA guideline and manual developments in Europe aiming to incorporate combined effects of contaminants, the use of different experimental approaches for providing combined effect data, the involvement of biomarkers to characterize Mode of Action and toxicity pathways and efforts to identify relevant risk scenarios related to combined effects are discussed.
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Affiliation(s)
- Jonny Beyer
- Norwegian Institute of Water Research - NIVA, NO-0349 Oslo, Norway; University of Stavanger, Department of Mathematics and Natural Science, N-4036 Stavanger, Norway.
| | - Karina Petersen
- Norwegian Institute of Water Research - NIVA, NO-0349 Oslo, Norway
| | - You Song
- Norwegian Institute of Water Research - NIVA, NO-0349 Oslo, Norway; Norwegian University of Life Sciences - UMB, N-0033 Oslo, Norway
| | - Anders Ruus
- Norwegian Institute of Water Research - NIVA, NO-0349 Oslo, Norway
| | - Merete Grung
- Norwegian Institute of Water Research - NIVA, NO-0349 Oslo, Norway
| | - Torgeir Bakke
- Norwegian Institute of Water Research - NIVA, NO-0349 Oslo, Norway
| | - Knut Erik Tollefsen
- Norwegian Institute of Water Research - NIVA, NO-0349 Oslo, Norway; Norwegian University of Life Sciences - UMB, N-0033 Oslo, Norway
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Contraceptive options and their associated estrogenic environmental loads: relationships and trade-offs. PLoS One 2014; 9:e92630. [PMID: 24670973 PMCID: PMC3966801 DOI: 10.1371/journal.pone.0092630] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Accepted: 02/23/2014] [Indexed: 11/19/2022] Open
Abstract
This work explores the relationships between a user's choice of a given contraceptive option and the load of steroidal estrogens that can be associated with that choice. Family planning data for the USA served as a basis for the analysis. The results showed that collectively the use of contraception in the USA conservatively averts the release of approximately 4.8 tonnes of estradiol equivalents to the environment. 35% of the estrogenic load released over the course of all experienced pregnancies events and 34% the estrogenic load represented by all resultant legacies are a result of contraception failure and the non-use of contraception. A scenario analysis conducted to explore the impacts of discontinuing the use of ethinylestradiol-based oral contraceptives revealed that this would not only result in a 1.7-fold increase in the estrogenic loading of the users, but the users would also be expected to experience undesired family planning outcomes at a rate that is 3.3 times higher. Additional scenario analyses in which ethinylestradiol-based oral contraceptive users were modeled as having switched entirely to the use of male condoms, diaphragms or copper IUDs suggested that whether a higher or lower estrogenic load can be associated with the switching population depends on the typical failure rates of the options adopted following discontinuation. And, finally, it was estimated that, in the USA, at most 13% of the annual estrogenic load can be averted by fully meeting the contraceptive needs of the population. Therefore, while the issue of estrogen impacts on the environment cannot be addressed solely by meeting the population's contraceptive needs, a significant fraction of the estrogenic mass released to environment can be averted by improving the level with which their contraceptive needs are met.
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48
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Segner H, Casanova-Nakayama A, Kase R, Tyler CR. Impact of environmental estrogens on Yfish considering the diversity of estrogen signaling. Gen Comp Endocrinol 2013; 191:190-201. [PMID: 23763869 DOI: 10.1016/j.ygcen.2013.05.015] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2012] [Revised: 05/16/2013] [Accepted: 05/29/2013] [Indexed: 12/31/2022]
Abstract
Research on endocrine disruption in fish has been dominated by studies on estrogen-active compounds which act as mimics of the natural estrogen, 17β-estradiol (E2), and generally exert their biological actions by binding to and activation of estrogen receptors (ERs). Estrogens play central roles in reproductive physiology and regulate (female) sexual differentiation. In line with this, most adverse effects reported for fish exposed to environmental estrogens relate to sexual differentiation and reproduction. E2, however, utilizes a variety of signaling mechanisms, has multifaceted functions and targets, and therefore the toxicological and ecological effects of environmental estrogens in fish will extend beyond those associated with the reproduction. This review first describes the diversity of estrogen receptor signaling in fish, including both genomic and non-genomic mechanisms, and receptor crosstalk. It then considers the range of non-reproductive physiological processes in fish that are known to be responsive to estrogens, including sensory systems, the brain, the immune system, growth, specifically through the growth hormone/insulin-like growth factor system, and osmoregulation. The diversity in estrogen responses between fish species is then addressed, framed within evolutionary and ecological contexts, and we make assessments on their relevance for toxicological sensitivity as well as ecological vulnerability. The diversity of estrogen actions raises questions whether current risk assessment strategies, which focus on reproductive endpoints, and a few model fish species only, are protective of the wider potential health effects of estrogens. Available - although limited - evidence nevertheless suggests that quantitative environmental threshold concentrations for environmental protection derived from reproductive tests with model fish species are protective for non-reproductive effects as well. The diversity of actions of estrogens across divergent physiological systems, however, may lead to and underestimation of impacts on fish populations as their effects are generally considered on one functional process only and this may underrepresent the impact on the different physiological processes collectively.
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Affiliation(s)
- Helmut Segner
- Centre for Fish and Wildlife Health, University of Bern, Bern, Switzerland.
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49
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Pottinger TG, Katsiadaki I, Jolly C, Sanders M, Mayer I, Scott AP, Morris S, Kortenkamp A, Scholze M. Anti-androgens act jointly in suppressing spiggin concentrations in androgen-primed female three-spined sticklebacks - prediction of combined effects by concentration addition. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2013; 140-141:145-156. [PMID: 23792627 DOI: 10.1016/j.aquatox.2013.05.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 05/28/2013] [Accepted: 05/30/2013] [Indexed: 06/02/2023]
Abstract
Increasing attention is being directed at the role played by anti-androgenic chemicals in endocrine disruption of wildlife within the aquatic environment. The co-occurrence of multiple contaminants with anti-androgenic activity highlights a need for the predictive assessment of combined effects, but information about anti-androgen mixture effects on wildlife is lacking. This study evaluated the suitability of the androgenised female stickleback screen (AFSS), in which inhibition of androgen-induced spiggin production provides a quantitative assessment of anti-androgenic activity, for predicting the effect of a four component mixture of anti-androgens. The anti-androgenic activity of four known anti-androgens (vinclozolin, fenitrothion, flutamide, linuron) was evaluated from individual concentration-response data and used to design a mixture containing each chemical at equipotent concentrations. Across a 100-fold concentration range, a concentration addition approach was used to predict the response of fish to the mixture. Two studies were conducted independently at each of two laboratories. By using a novel method to adjust for differences between nominal and measured concentrations, good agreement was obtained between the actual outcome of the mixture exposure and the predicted outcome. This demonstrated for the first time that androgen receptor antagonists act in concert in an additive fashion in fish and that existing mixture methodology is effective in predicting the outcome, based on concentration-response data for individual chemicals. The sensitivity range of the AFSS assay lies within the range of anti-androgenicity reported in rivers across many locations internationally. The approach taken in our study lays the foundations for understanding how androgen receptor antagonists work together in fish and is essential in informing risk assessment methods for complex anti-androgenic mixtures in the aquatic environment.
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Affiliation(s)
- T G Pottinger
- Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, Lancaster, LA1 4AP, UK.
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50
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Abstract
Yeast two-hybrid system was used to investigate the estrogenic activities of 13 kinds of representative endocrine disrupting chemicals (EDCs) and their combinary effects. Results show that the order of estrogenic potencies for these chemicals is: 17α-ethynylestradiol>diethylstilbestrol >17β-estradiol>estrone>estriol>branchedp-nonylphenol>4-t-octylphenol>bisphenol A>diethyl phthalate>4-n-nonylphenol>di-(2-ethylhexyl) phthalate>dibutyl phthalate>dimethyl phthalate. The mixture effects of multiple EDCs were compared to those obtained from individual chemicals, using the model of concentration addition. Results reveal that the estrogenicities of multicomponent mixtures of more than three (including three) of EDCs follow antagonistic effects, while there is no definite conclusion for binary systems. The less than additive effects were also confirmed in the spiked experiments conducted in the extracts of real water samples.
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