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Colas S, Marie B, Morin S, Milhe-Poutingon M, Foucault P, Chalvin S, Gelber C, Baldoni-Andrey P, Gurieff N, Fortin C, Le Faucheur S. New sensitive tools to characterize meta-metabolome response to short- and long-term cobalt exposure in dynamic river biofilm communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:171851. [PMID: 38518822 DOI: 10.1016/j.scitotenv.2024.171851] [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: 11/18/2023] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
Untargeted metabolomics is a non-a priori analysis of biomolecules that characterizes the metabolome variations induced by short- and long-term exposures to stressors. Even if the metabolite annotation remains lacunar due to database gaps, the global metabolomic fingerprint allows for trend analyses of dose-response curves for hundreds of cellular metabolites. Analysis of dose/time-response curve trends (biphasic or monotonic) of untargeted metabolomic features would thus allow the use of all the chemical signals obtained in order to determine stress levels (defense or damage) in organisms. To develop this approach in a context of time-dependent microbial community changes, mature river biofilms were exposed for 1 month to four cobalt (Co) concentrations (from background concentration to 1 × 10-6 M) in an open system of artificial streams. The meta-metabolomic response of biofilms was compared against a multitude of biological parameters (including bioaccumulation, biomass, chlorophyll a content, composition and structure of prokaryotic and eukaryotic communities) monitored at set exposure times (from 1 h to 28 d). Cobalt exposure induced extremely rapid responses of the meta-metabolome, with time range inducing defense responses (TRIDeR) of around 10 s, and time range inducing damage responses (TRIDaR) of several hours. Even in biofilms whose structure had been altered by Co bioaccumulation (reduced biomass, chlorophyll a contents and changes in the composition and diversity of prokaryotic and eukaryotic communities), concentration range inducing defense responses (CRIDeR) with similar initiation thresholds (1.41 ± 0.77 × 10-10 M Co2+ added in the exposure medium) were set up at the meta-metabolome level at every time point. In contrast, the concentration range inducing damage responses (CRIDaR) initiation thresholds increased by 10 times in long-term Co exposed biofilms. The present study demonstrates that defense and damage responses of biofilm meta-metabolome exposed to Co are rapidly and sustainably impacted, even within tolerant and resistant microbial communities.
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Affiliation(s)
- Simon Colas
- Universite de Pau et des Pays de l'Adour, E2S-UPPA, CNRS, IPREM, Pau, France.
| | - Benjamin Marie
- UMR 7245 CNRS/MNHN "Molécules de Communication et Adaptation des Micro-organismes", Muséum National d'Histoire Naturelle, Paris, France
| | | | | | - Pierre Foucault
- UMR 7245 CNRS/MNHN "Molécules de Communication et Adaptation des Micro-organismes", Muséum National d'Histoire Naturelle, Paris, France; UMR7618 iEES-Paris, Sorbonne Université, Paris, France
| | - Siann Chalvin
- Universite de Pau et des Pays de l'Adour, E2S-UPPA, CNRS, IPREM, Pau, France
| | | | | | | | - Claude Fortin
- Institut National de la Recherche Scientifique - Eau Terre Environnement, Québec, Canada
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Lapczynski A, Belanger SE, Connors K, Bozich J. A Chronic Aquatic Hazard Assessment for the Perfume Raw Material Octahydro-tetramethyl-naphthalenyl-ethanone. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2024; 43:1378-1389. [PMID: 38661477 DOI: 10.1002/etc.5865] [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: 11/20/2023] [Revised: 02/02/2024] [Accepted: 03/07/2024] [Indexed: 04/26/2024]
Abstract
Octahydro-tetramethyl-naphthalenyl-ethanone (OTNE) is a high-production volume fragrance material used in various down-the-drain consumer products. To assess aquatic risk, the Research Institute for Fragrance Materials (RIFM) uses a tiered data-driven framework to determine a risk characterization ratio, where the ratio of the predicted-environmental concentration to the predicted-no-effect concentration (PNEC) of <1 indicates an acceptable level of risk. Owing to its high production volume and the conservative nature of the RIFM framework, RIFM identified the need to utilize a species sensitivity distribution (SSD) approach to reduce the PNEC uncertainty for OTNE. Adding to the existing Daphnia magna, Danio rerio, and Desmodesmus subspicatus chronic studies, eight new chronic toxicity studies were conducted on the following species: Navicula pelliculosa, Chironomus riparius, Lemna gibba, Ceriodaphnia dubia, Hyalella azteca, Pimephales promelas, Anabaena flos-aquae, and Daphnia pulex. All toxicity data were summarized as chronic 10% effect concentration estimates using the most sensitive biological response. Daphnia magna was the most sensitive (0.032 mg/L), and D. subspicatus was the least sensitive (>2.6 mg/L, the OTNE solubility limit). The 5th percentile hazardous concentration (HC5) derived from the cumulative probability distribution of the chronic toxicity values for the 11 species was determined to be 0.0498 mg/L (95% confidence interval 0.0097-0.1159 mg/L). A series of "leave-one-out" and "add-one-in" simulations indicated the SSD was stable and robust. Add-one-in simulations determined that the probability of finding a species sensitive enough to lower the HC5 two- or threefold was 1/504 and 1/15,300, respectively. Given the high statistical confidence in this robust SSD, an additional application factor protection is likely not necessary. Nevertheless, to further ensure the protection of the environment, an application factor of 2 to the HC5, resulting in a PNEC of 0.0249 mg/L, is recommended. When combined with environmental exposure information, the overall hazard assessment is suitable for a probabilistic environmental risk assessment. Environ Toxicol Chem 2024;43:1378-1389. © 2024 SETAC.
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Affiliation(s)
| | | | - Kristin Connors
- Environmental Stewardship and Sustainability, The Procter and Gamble Company, Mason, Ohio, USA
| | - Jared Bozich
- International Flavors and Fragrances, New York, New York, USA
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Colas S, Marie B, Milhe-Poutingon M, Lot MC, Boullemant A, Fortin C, Le Faucheur S. Meta-metabolomic responses of river biofilms to cobalt exposure and use of dose-response model trends as an indicator of effects. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134099. [PMID: 38547754 DOI: 10.1016/j.jhazmat.2024.134099] [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: 11/14/2023] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 04/25/2024]
Abstract
The response of the meta-metabolome is rarely used to characterize the effects of contaminants on a whole community. Here, the meta-metabolomic fingerprints of biofilms were examined after 1, 3 and 7 days of exposure to five concentrations of cobalt (from background concentration to 1 × 10-5 M) in aquatic microcosms. The untargeted metabolomic data were processed using the DRomics tool to build dose-response models and to calculate benchmark-doses. This approach made it possible to use 100% of the chemical signal instead of being limited to the very few annotated metabolites (7%). These benchmark-doses were further aggregated into an empirical cumulative density function. A trend analysis of the untargeted meta-metabolomic feature dose-response curves after 7 days of exposure suggested the presence of a concentration range inducing defense responses between 1.7 × 10-9 and 2.7 × 10-6 M, and of a concentration range inducing damage responses from 2.7 × 10-6 M and above. This distinction was in good agreement with changes in the other biological parameters studied (biomass and chlorophyll content). This study demonstrated that the molecular defense and damage responses can be related to contaminant concentrations and represents a promising approach for environmental risk assessment of metals.
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Affiliation(s)
- Simon Colas
- Universite de Pau et des Pays de l'Adour, E2S-UPPA, CNRS, IPREM, Pau, France.
| | - Benjamin Marie
- UMR 7245 CNRS/MNHN " Molécules de Communication et Adaptations des Micro-organismes ", Muséum National d'Histoire Naturelle, Paris, France
| | | | | | | | - Claude Fortin
- Institut National de la Recherche Scientifique - Eau Terre Environnement, Québec, Canada
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Long Z, Yao J, Wu M, Liu SS, Tang L, Lei B, Wang J, Sun H. Acute toxicity of binary mixtures for quorum sensing inhibitors and sulfonamides against Aliivibrio fischeri: QSAR investigations and joint toxic actions. Curr Res Toxicol 2024; 6:100172. [PMID: 38803613 PMCID: PMC11128832 DOI: 10.1016/j.crtox.2024.100172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 05/08/2024] [Accepted: 05/09/2024] [Indexed: 05/29/2024] Open
Abstract
Quorum sensing inhibitors (QSIs), as a kind of ideal antibiotic substitutes, have been recommended to be used in combination with traditional antibiotics in medical and aquaculture fields. Due to the co-existence of QSIs and antibiotics in environmental media, it is necessary to evaluate their joint risk. However, there is little information about the acute toxicity of mixtures for QSIs and antibiotics. In this study, 10 QSIs and 3 sulfonamides (SAs, as the representatives for traditional antibiotics) were selected as the test chemicals, and their acute toxic effects were determined using the bioluminescence of Aliivibrio fischeri (A. fischeri) as the endpoint. The results indicated that SAs and QSIs all induced S-shaped dose-responses in A. fischeri bioluminescence. Furthermore, SAs possessed greater acute toxicity than QSIs, and luciferase (Luc) might be the target protein of test chemicals. Based on the median effective concentration (EC50) for each test chemical, QSI-SA mixtures were designed according to equitoxic (EC50(QSI):EC50(SA) = 1:1) and non-equitoxic ratios (EC50(QSI):EC50(SA) = 1:10, 1:5, 1:0.2, and 1:0.1). It could be observed that with the increase of QSI proportion, the acute toxicity of QSI-SA mixtures enhanced while the corresponding TU values decreased. Furthermore, QSIs contributed more to the acute toxicity of test binary mixtures. The joint toxic actions of QSIs and SAs were synergism for 23 mixtures, antagonism for 12 mixtures, and addition for 1 mixture. Quantitative structure-activity relationship (QSAR) models for the acute toxicity QSIs, SAs, and their binary mixtures were then constructed based on the lowest CDOCKER interaction energy (Ebind-Luc) between Luc and each chemical and the component proportion in the mixture. These models exhibited good robustness and predictive ability in evaluating the toxicity data and joint toxic actions of QSIs and SAs. This study provides reference data and applicable QSAR models for the environmental risk assessment of QSIs, and gives a new perspective for exploring the joint effects of QSI-antibiotic mixtures.
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Affiliation(s)
- Zhenheng Long
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Jingyi Yao
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Minghong Wu
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Shu-shen Liu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Liang Tang
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Bo Lei
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Jiajun Wang
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Haoyu Sun
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
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Lei L, Zhang L, Han Z, Chen Q, Liao P, Wu D, Tai J, Xie B, Su Y. Advancing chronic toxicity risk assessment in freshwater ecology by molecular characterization-based machine learning. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123093. [PMID: 38072027 DOI: 10.1016/j.envpol.2023.123093] [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: 09/04/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 01/26/2024]
Abstract
The continuously increased production of various chemicals and their release into environments have raised potential negative effects on ecological health. However, traditional labor-intensive assessment methods cannot effectively and rapidly evaluate these hazards, especially for chronic risk. In this study, machine learning (ML) was employed to construct quantitative structure-activity relationship (QSAR) models, enabling the prediction of chronic toxicity to aquatic organisms by leveraging the molecular characteristics of pollutants, namely, the molecular descriptors, fingerprints, and graphs. The limited dataset size hindered the notable advantages of the graph attention network (GAT) model for the molecular graphs. Considering computational efficiency and performance (R2 = 0.78; RMSE = 0.77), XGBoost (XGB) was used for reliable QSAR-ML models predicting chronic toxicity using small- or medium-sized tabular data and the molecular descriptors. Further kernel density estimation analysis confirmed the high accuracy of the model for pollutant concentrations ranging from 10-3 to 102 mg/L, effectively aligning with most environmental scenarios. Model interpretation showed SlogP and exposure duration as the primary influential factors. SlogP, representing the distribution coefficient of a molecule between lipophilic and hydrophilic environments, had a negative effect on the toxicity outcomes. Additionally, the exposure duration played a crucial role in determining the chronic toxicity. Finally, the chronic toxicity data of bisphenol A validated the robustness and reliability of the model established in this research. Our study provided a robust and feasible methodology for chronic ecological risk evaluation of various types of pollutants and could facilitate and increase the use of ML applications in environmental fields.
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Affiliation(s)
- Lang Lei
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China
| | - Liangmao Zhang
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China
| | - Zhibang Han
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China
| | - Qirui Chen
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China
| | - Pengcheng Liao
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China
| | - Dong Wu
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China; Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing, 401120, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Jun Tai
- Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd., Shanghai, 200232, China
| | - Bing Xie
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Yinglong Su
- Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China; Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing, 401120, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
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Dos Reis LL, de Abreu CB, Gebara RC, Rocha GS, Longo E, Mansano ADS, Melão MDGG. Isolated and combined effects of cobalt and nickel on the microalga Raphidocelis subcapitata. ECOTOXICOLOGY (LONDON, ENGLAND) 2024; 33:104-118. [PMID: 38236330 DOI: 10.1007/s10646-024-02728-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/03/2024] [Indexed: 01/19/2024]
Abstract
Aquatic organisms are exposed to several compounds that occur in mixtures in the environment. Thus, it is important to investigate their impacts on organisms because these combined effects can be potentiated. Cobalt (Co) and nickel (Ni) are metals that occur in the environment and are used in human activities. To the best of our knowledge, there are no studies that investigated the combined effects of these metals on a freshwater Chlorophyceae. Therefore, this study analyzed the isolated and combined effects of Co and Ni in cell density, physiological and morphological parameters, reactive oxygen species (ROS), carbohydrates and photosynthetic parameters of the microalga Raphidocelis subcapitata. Data showed that Co affected the cell density from 0.25 mg Co L-1; the fluorescence of chlorophyll a (Chl a) (0.10 mg Co L-1); ROS production (0.50 mg Co L-1), total carbohydrates and efficiency of the oxygen evolving complex (OEC) at all tested concentrations; and the maximum quantum yield (ΦM) from 0.50 mg Co L-1. Ni exposure decreased ROS and cell density (0.35 mg Ni L-1); altered Chl a fluorescence and carbohydrates at all tested concentrations; and did not alter photosynthetic parameters. Regarding the Co-Ni mixtures, our data best fitted the concentration addition (CA) model and dose-ratio dependent (DR) deviation in which synergism was observed at low doses of Co and high doses of Ni and antagonism occurred at high doses of Co and low doses of Ni. The combined metals affected ROS production, carbohydrates, ΦM, OEC and morphological and physiological parameters.
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Affiliation(s)
- Larissa Luiza Dos Reis
- Universidade Federal de São Carlos - UFSCar, Department of Hydrobiology, Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil.
- Post-Graduate Program in Ecology and Natural Resources (PPGERN), Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil.
| | - Cínthia Bruno de Abreu
- Center for the Development of Functional Materials (CDMF), Federal University of São Carlos (UFSCar), 13565-905, São Carlos, SP, Brazil
| | - Renan Castelhano Gebara
- Center for the Development of Functional Materials (CDMF), Federal University of São Carlos (UFSCar), 13565-905, São Carlos, SP, Brazil
| | - Giseli Swerts Rocha
- Universitat Rovira i Virgili, Escola Tècnica Superior d'Enginyeria Química, Departament d'Enginyeria Química, Avinguda Països Catalans, 26, 43007, Tarragona, Spain
| | - Elson Longo
- Center for the Development of Functional Materials (CDMF), Federal University of São Carlos (UFSCar), 13565-905, São Carlos, SP, Brazil
| | - Adrislaine da Silva Mansano
- Universidade Federal de São Carlos - UFSCar, Department of Hydrobiology, Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil
- Post-Graduate Program in Ecology and Natural Resources (PPGERN), Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil
| | - Maria da Graça Gama Melão
- Universidade Federal de São Carlos - UFSCar, Department of Hydrobiology, Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil
- Post-Graduate Program in Ecology and Natural Resources (PPGERN), Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil
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Battaglin W, Bradley P, Weissinger R, Blackwell B, Cavallin J, Villeneuve D, DeCicco L, Kinsey J. Changes in chemical occurrence, concentration, and bioactivity in the Colorado River before and after replacement of the Moab, Utah wastewater treatment plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166231. [PMID: 37586530 DOI: 10.1016/j.scitotenv.2023.166231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/09/2023] [Accepted: 08/09/2023] [Indexed: 08/18/2023]
Abstract
Long-term (2010-19) water-quality monitoring on the Colorado River downstream from Moab Utah indicated the persistent presence of Bioactive Chemicals (BC), such as pesticides and pharmaceuticals. This stream reach near Canyonlands National Park provides critical habitat for federally endangered species. The Moab wastewater treatment plant (WWTP) outfall discharges to the Colorado River and is the nearest potential point-source to this reach. The original WWTP was replaced in 2018. In 2016-19, a study was completed to determine if the new plant reduced BC input to the Colorado River at, and downstream from, the outfall. Water samples were collected before and after the plant replacement at sites upstream and downstream from the outfall. Samples were analyzed for as many as 243 pesticides, 109 pharmaceuticals, 20 hormones, 51 wastewater indicator chemicals, 20 metals, and 8 nutrients. BC concentrations, hazard quotients (HQs), and exposure activity ratios (EARs) were used to identify and prioritize contaminants for their potential to have adverse biological effects on the health of native and endangered wildlife. There were 22 BC with HQs >1, mostly metals and hormones; and 23 BC with EARs >0.1, mostly hormones and pharmaceuticals. Most high HQs or EARs were associated with samples collected at the WWTP outfall site prior to its replacement. Discharge from the new plant had reduced concentrations of nutrients, hormones, pharmaceuticals, and other BC. For example, all 16 of the hormones detected at the WWTP outfall site had maximum concentrations in samples collected prior to the WWTP replacement. The WWTP replacement had less effect on instream concentrations of metals and pesticides, BC whose sources are less directly tied to domestic wastewater. Study results indicate that improved WWTP technology can create substantial reductions in concentrations of non-regulated BC such as pharmaceuticals, in addition to regulated contaminants such as nutrients.
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Watanabe CH, Gontijo ESJ, Domingues MT, Fracácio R, Rosa AH. Impact of aquatic humic substances on speciation and toxicity of arsenic and cobalt to Ceriodaphnia dubia. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27994-z. [PMID: 37253909 DOI: 10.1007/s11356-023-27994-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 05/25/2023] [Indexed: 06/01/2023]
Abstract
Humic substances (HS) interact with trace metals such as As and Co, affecting their mobility and availability in aquatic systems. However, their combined effects on toxicity to aquatic organisms are not totally understood. The objective of this study was to evaluate the toxicity of Co(II) and As(III) to the water flea Ceriodaphnia dubia in the presence of HS, considering element speciation. Toxicity assays were performed in the presence and absence of HS at two different concentrations of As(III) (10 and 20 μg/L) and Co(II) (50 and 100 μg/L). The free As(III) and Co(II) (< 1 kDa, fraction most potentially bioavailable) in the test solutions were determined via ultrafiltration. While free Co(II) decreased by approximately 80% in the presence of HS, free As(III) decreased just by 1%. Despite the higher percentage of As(III) potentially bioavailable, the presence of HS reduced significantly the toxicity of As at 20 μg/L (no toxicity was observed at 10 μg/L). This was attributed to direct effects of HS such as hormesis, hormone-like effects of HS and/or formation of protective coating. These effects also stimulated the reproduction, including in the assays in the absence of As and Co. HS reduced the toxicity of Co(II) at both test concentrations. The results of this investigation support that HS should be considered when safe limits for As and Co are defined.
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Affiliation(s)
- Cláudia Hitomi Watanabe
- São Paulo State University (UNESP), Institute of Science and Technology, Avenida Três de Março 511, Alto da Boa Vista, Sorocaba, São Paulo, 18087-180, Brazil
| | - Erik Sartori Jeunon Gontijo
- São Paulo State University (UNESP), Institute of Science and Technology, Avenida Três de Março 511, Alto da Boa Vista, Sorocaba, São Paulo, 18087-180, Brazil
| | - Murilo Teles Domingues
- Federal Institute of Goiás (IFG), Campus Formosa, Rua 64, s/n - Esq. c/Rua 11, Parque Lago, Formosa, Goiás, 73813-816, Brazil
| | - Renata Fracácio
- São Paulo State University (UNESP), Institute of Science and Technology, Avenida Três de Março 511, Alto da Boa Vista, Sorocaba, São Paulo, 18087-180, Brazil
| | - André Henrique Rosa
- São Paulo State University (UNESP), Institute of Science and Technology, Avenida Três de Março 511, Alto da Boa Vista, Sorocaba, São Paulo, 18087-180, Brazil.
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Huang C, Liu H, Sun C, Wang P, Tian Z, Cheng H, Huang S, Yang X, Wang M, Liu Z. Peroxymonosulfate activation by graphene oxide-supported 3D-MoS 2/FeCo 2O 4 sponge for highly efficient organic pollutants degradation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 325:121391. [PMID: 36871747 DOI: 10.1016/j.envpol.2023.121391] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/20/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
To address conventional powder catalysts' recovery and aggregation issues that greatly restrain their practical application, a recoverable graphene oxide (GO)-supported 3D-MoS2/FeCo2O4 sponge (SFCMG) was developed through a simple impregnation pyrolysis method. SFCMG can efficiently activate peroxymonosulfate (PMS) to produce reactive species for rapid degradation of rhodamine B (RhB), with 95.0% and 100% of RhB being removed within 2 min and 10 min, respectively. The presence of GO enhances the electron transfer performance of the sponge, and the three-dimensional melamine sponge serves as a substrate to provide a highly dispersed carrier for FeCo2O4 and MoS2/GO hybrid sheets. SFCMG exhibits a synergistic catalytic effect of Fe and Co, and facilitates the redox cycles of Fe(III)/Fe(II) and Co(III)/Co(II) by MoS2 co-catalysis, which enhances its catalytic activity. Electron paramagnetic resonance results demonstrate that SO4•-, ·O2- and 1O2 are all involved in SFCMG/PMS system, and 1O2 played a prominent role in RhB degradation. The system has good resistance to anions (Cl-, SO42-, and H2PO4-) and humic acid and excellent performance for many typical contaminants degradation. Additionally, it works efficiently over a wide pH range (3-9) and possesses high stability and reusability with the metal leaching far below the safety standards. The present study extends the practical application of metal co-catalysis and offers a promising Fenton-like catalyst for the treatment of organic wastewater.
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Affiliation(s)
- Chao Huang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Hao Liu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Chengyou Sun
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Ping Wang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
| | - Zhongyu Tian
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Hao Cheng
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Su Huang
- School of Business Administration, Zhongnan University of Economics and Law, Wuhan, 430073, China
| | - Xiong Yang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Mengxin Wang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Zhiming Liu
- Department of Biology, Eastern New Mexico University, Portales, NM, 88130, USA
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Vijayaram S, Ringø E, Zuorro A, van Doan H, Sun Y. Beneficial roles of nutrients as immunostimulants in aquaculture: A review. AQUACULTURE AND FISHERIES 2023. [DOI: 10.1016/j.aaf.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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11
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Gnatyshyna L, Khoma V, Martinyuk V, Matskiv T, Pedrini-Martha V, Niederwanger M, Stoliar O, Dallinger R. Sublethal cadmium exposure in the freshwater snail Lymnaea stagnalis meets a deficient, poorly responsive metallothionein system while evoking oxidative and cellular stress. Comp Biochem Physiol C Toxicol Pharmacol 2023; 263:109490. [PMID: 36265756 DOI: 10.1016/j.cbpc.2022.109490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/29/2022] [Accepted: 10/12/2022] [Indexed: 11/22/2022]
Abstract
The Great Pond snail Lymnaea stagnalis (Gastropoda, Hygrophila) is a wide-spread freshwater gastropod, being considered as a model organism for research in many fields of biology, including ecotoxicology. The aim of the present study was to explore the Cd sensitivity of L. stagnalis through the measurement of a biomarker battery for oxidative, toxic and cellular stress. The interpretation of biomarker parameters occurred against the background of a truncated metallothionein protein with a limited Cd-binding capacity. Individuals of L. stagnalis were exposed through 14 days to uncontaminated water (controls) or to low (30 μg · L-1) or high (50 μg · L-1) Cd concentrations. The digestive gland of control and low-Cd exposed snails was processed for transcriptional analysis of the Metallothionein (MT) gene expression, and for determination of biomarkers for oxidative stress, toxicity and cellular stress. Digestive gland supernatants of high-Cd exposed snails were subjected to chromatography and subsequent analysis by spectrophotometry. It was shown that the MT system of L. stagnalis is functionally deficient, with a poor Cd responsiveness at both, the transcriptional and the protein expression levels. Instead, L. stagnalis appears to rely on alternative detoxification mechanisms such as Cd binding by phytochelatins and metal inactivation by compartmentalization within the lysosomal system. In spite of this, however, traces of Cd apparently leak out of the pre-determined detoxification pathways, leading to adverse effects, which is clearly indicated by biomarkers of oxidative and cellular stress.
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Affiliation(s)
- Lesya Gnatyshyna
- I.Ya. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine; Ternopil Volodymyr Hnatiuk National Pedagogical University, Ternopil, Ukraine.
| | - Vira Khoma
- Ternopil Volodymyr Hnatiuk National Pedagogical University, Ternopil, Ukraine.
| | - Viktoria Martinyuk
- Ternopil Volodymyr Hnatiuk National Pedagogical University, Ternopil, Ukraine
| | - Tetyana Matskiv
- I.Ya. Horbachevsky Ternopil National Medical University, Ternopil, Ukraine; Ternopil Volodymyr Hnatiuk National Pedagogical University, Ternopil, Ukraine.
| | | | - Michael Niederwanger
- Institute of Zoology, University and Center of Molecular Biosciences, Innsbruck, Austria.
| | - Oksana Stoliar
- Ternopil Volodymyr Hnatiuk National Pedagogical University, Ternopil, Ukraine.
| | - Reinhard Dallinger
- Institute of Zoology, University and Center of Molecular Biosciences, Innsbruck, Austria.
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12
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Becker D, Beckerman AP. Copper mediates life history responses of Daphnia pulex to predation threat. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.983923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A key challenge for ecological and ecotoxicological risk assessment is to predict the risk of organisms when exposed simultaneously to multiple stressors in sub-lethal concentrations. Here, we assessed whether sub-lethal concentrations of an anthropogenic stressors, the heavy metal copper (Cu), mediates the impacts of a natural ecological threat to species, predation risk, among six distinct Daphnia pulex clones. We investigated the interaction between the two stressors on morphological defenses and on several life-history traits including maturation time, size at maturity, somatic growth rate and survival rates. Combining a life table experiment on a response surface design, we found no evidence that the heavy metal copper mediates the effects of predator cue induced morphological responses in the tested D. pulex clones. However, our data indicate that copper can mediate several key life-history responses to predation risk. For age at maturity, we found also clear evidence that the observed interaction between predation risk and copper varied by whether clones were strong or weak morphological responders. Specific exploration of the relationship between morphological responses and life history traits under predation risk and copper suggest a strong hypothesis for multiple strategies to deal with multiple stressors. While interactions between different stressors make it harder to predict their outcomes, and ultimately assess water quality regulations about the effects of such stressors, our study provides evidence that life history theory can aid in understanding and predicting their impacts.
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A novel 3D Co/Mo co-catalyzed graphene sponge-mediated peroxymonosulfate activation for the highly efficient pollutants degradation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Moleiro P, Morais T, Leite C, Coppola F, Henriques B, Pinto J, Soares AMVM, Pereira E, Freitas R. The effect of ocean warming on accumulation and cellular responsiveness to cobalt in Mytilus galloprovincialis. MARINE POLLUTION BULLETIN 2022; 182:113944. [PMID: 35908486 DOI: 10.1016/j.marpolbul.2022.113944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/08/2022] [Accepted: 07/09/2022] [Indexed: 06/15/2023]
Abstract
Cobalt (Co) is among the hazardous substances identified in aquatic environments. Industrialization and population growth have also contributed to climate change, namely in what concerns ocean temperature rise. The aim of the present study was to evaluate the influence of temperature rise on the impacts caused by Co on Mytilus galloprovincialis. To this end, mussels were exposed for 28 days to 17 °C and 21 °C, without and with 200 μg L-1 of Co. Results showed no significant differences in Co bioaccumulation by the organisms between temperatures. A significant interaction between temperature and Co contamination was observed in terms of oxidative damage, detoxification capacity, and neurotoxicity, with a synergistic effect particularly evident in terms of biotransformation enzymes' activity. The obtained results point out that population survival and distribution may be limited in the long term, highlighting the need for future research on the combined effects of both stressors.
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Affiliation(s)
- Pedro Moleiro
- Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Tiago Morais
- Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Carla Leite
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Francesca Coppola
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Bruno Henriques
- Departamento de Química & LAQV-REQUIMTE, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - João Pinto
- Departamento de Química & LAQV-REQUIMTE, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Amadeu M V M Soares
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Eduarda Pereira
- Departamento de Química & LAQV-REQUIMTE, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Rosa Freitas
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
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15
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Elsayed A, Moussa Z, Alrdahe SS, Alharbi MM, Ghoniem AA, El-khateeb AY, Saber WIA. Optimization of Heavy Metals Biosorption via Artificial Neural Network: A Case Study of Cobalt (II) Sorption by Pseudomonas alcaliphila NEWG-2. Front Microbiol 2022; 13:893603. [PMID: 35711743 PMCID: PMC9194897 DOI: 10.3389/fmicb.2022.893603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/02/2022] [Indexed: 02/03/2023] Open
Abstract
The definitive screening design (DSD) and artificial neural network (ANN) were conducted for modeling the biosorption of Co(II) by Pseudomonas alcaliphila NEWG-2. Factors such as peptone, incubation time, pH, glycerol, glucose, K2HPO4, and initial cobalt had a significant effect on the biosorption process. MgSO4 was the only insignificant factor. The DSD model was invalid and could not forecast the prediction of Co(II) removal, owing to the significant lack-of-fit (P < 0.0001). Decisively, the prediction ability of ANN was accurate with a prominent response for training (R2 = 0.9779) and validation (R2 = 0.9773) and lower errors. Applying the optimal levels of the tested variables obtained by the ANN model led to 96.32 ± 2.1% of cobalt bioremoval. During the biosorption process, Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy, and scanning electron microscopy confirmed the sorption of Co(II) ions by P. alcaliphila. FTIR indicated the appearance of a new stretching vibration band formed with Co(II) ions at wavenumbers of 562, 530, and 531 cm-1. The symmetric amino (NH2) binding was also formed due to Co(II) sorption. Interestingly, throughout the revision of publications so far, no attempt has been conducted to optimize the biosorption of Co(II) by P. alcaliphila via DSD or ANN paradigm.
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Affiliation(s)
- Ashraf Elsayed
- Botany Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Zeiad Moussa
- Department of Microbiology, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
| | - Salma Saleh Alrdahe
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | | | - Abeer A. Ghoniem
- Department of Microbiology, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
| | - Ayman Y. El-khateeb
- Department of Agricultural Chemistry, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
| | - WesamEldin I. A. Saber
- Department of Microbiology, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
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Dos Reis LL, Alho LDOG, de Abreu CB, Gebara RC, Mansano ADS, Melão MDGG. Effects of cadmium and cobalt mixtures on growth and photosynthesis of Raphidocelis subcapitata (Chlorophyceae). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 244:106077. [PMID: 35091369 DOI: 10.1016/j.aquatox.2022.106077] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 01/08/2022] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
Metals occur simultaneously in the environment, and therefore it is important to know their toxicity and mechanism of action when associated with another metal. Furthermore, anthropogenic actions increase their concentrations in the environment where they can interact and undergo transformations that can even increase their toxicity. This study aimed to evaluate the effects of cadmium (Cd) and cobalt (Co), isolated and combined, on the microalgae Raphidocelis subcapitata. Regarding the toxicity of isolated metals, the IC5096 h was 0.08 mg L-1 of Cd and 0.16 mg L-1 of Co. Cell density decreased at all concentrations of the Cd tested. The parameters related to cell size, cell complexity and mean cell chlorophyll a (Chl a) fluorescence were significantly affected by both metals. According to species sensitivity curves (SSD), the microalgae R. subcapitata was the second most sensitive organism to Co exposure and the tenth concerning Cd. Metal mixture data were best fitted to the concentration addition (CA) model and dose-ratio dependence (DR) deviation, showing synergism at high concentrations of Co and low concentrations of Cd. Besides that, antagonism was observed at low concentrations of Co and high concentrations of Cd. Photosynthetic performance, assessed by maximum quantum yield (ΦM) and oxygen evolving complex (OEC), presented antagonism effects for both analyzed parameters. Thus, the mixture of Cd and Co showed synergistic and antagonistic interactions for the parameters analyzed in R. Subcapitata, indicating the importance of understanding the mechanisms of toxicity of metal mixtures in phytoplankton.
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Affiliation(s)
- Larissa Luiza Dos Reis
- Universidade Federal de São Carlos - UFSCar, Department of Hydrobiology, Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, Km 235, Zip Code 13565- 905, São Carlos, SP, Brazil.
| | - Lays de Oliveira Gonçalves Alho
- Universidade Federal de São Carlos - UFSCar, Department of Hydrobiology, Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, Km 235, Zip Code 13565- 905, São Carlos, SP, Brazil
| | - Cínthia Bruno de Abreu
- Universidade Federal de São Carlos - UFSCar, Department of Hydrobiology, Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, Km 235, Zip Code 13565- 905, São Carlos, SP, Brazil
| | - Renan Castelhano Gebara
- Universidade Federal de São Carlos - UFSCar, Department of Hydrobiology, Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, Km 235, Zip Code 13565- 905, São Carlos, SP, Brazil
| | - Adrislaine da Silva Mansano
- Universidade Federal de São Carlos - UFSCar, Department of Hydrobiology, Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil; Post-Graduate Program in Ecology and Natural Resources (PPGERN), Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, Km 235, Zip Code 13565- 905, São Carlos, SP, Brazil
| | - Maria da Graça Gama Melão
- Universidade Federal de São Carlos - UFSCar, Department of Hydrobiology, Rodovia Washington Luís, Km 235, Zip Code 13565-905, São Carlos, SP, Brazil
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17
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Katsiadaki I, Ellis T, Andersen L, Antczak P, Blaker E, Burden N, Fisher T, Green C, Labram B, Pearson A, Petersen K, Pickford D, Ramsden C, Rønneseth A, Ryder K, Sacker D, Stevens C, Watanabe H, Yamamoto H, Sewell F, Hawkins P, Rufli H, Handy RD, Maynard SK, Jacobs MN. Dying for change: A roadmap to refine the fish acute toxicity test after 40 years of applying a lethal endpoint. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 223:112585. [PMID: 34365212 DOI: 10.1016/j.ecoenv.2021.112585] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/27/2021] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
The fish acute toxicity test (TG203; OECD, 2019) is frequently used and highly embedded in hazard and risk assessment globally. The test estimates the concentration of a chemical that kills 50% of the fish (LC50) over a 96 h exposure and is considered one of the most severe scientific procedures undertaken. Over the years, discussions at the Organisation for Economic Co-operation and Development (OECD) have resulted in changes to the test which reduce the number of fish used, as well as the development of a (potential) replacement test (TG236, OECD, 2013). However, refinement of the mortality endpoint with an earlier (moribundity) endpoint was not considered feasible during the Test Guideline's (TG) last update in 2019. Several stakeholders met at a UK-based workshop to discuss how TG203 can be refined, and identified two key opportunities to reduce fish suffering: (1) application of clinical signs that predict mortality and (2) shortening the test duration. However, several aspects need to be addressed before these refinements can be adopted. TG203 has required recording of major categories of sublethal clinical signs since its conception, with the option to record more detailed signs introduced in the 2019 update. However, in the absence of guidance, differences in identification, recording and reporting of clinical signs between technicians and laboratories is likely to have generated piecemeal data of varying quality. Harmonisation of reporting templates, and training in clinical sign recognition and recording are needed to standardise clinical sign data. This is critical to enable robust data-driven detection of clinical signs that predict mortality. Discussions suggested that the 96 h duration of TG203 cannot stand up to scientific scrutiny. Feedback and data from UK contract research organisations (CROs) conducting the test were that a substantial proportion of mortalities occur in the first 24 h. Refinement of TG203 by shortening the test duration would reduce suffering (and test failure rate) but requires a mechanism to correct new results to previous 96 h LC50 data. The actions needed to implement both refinement opportunities are summarised here within a roadmap. A shift in regulatory assessment, where the 96 h LC50 is a familiar base for decisions, will also be critical.
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Affiliation(s)
- Ioanna Katsiadaki
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth Laboratory, Barrack road, Dorset DT4 8UB, UK.
| | - Tim Ellis
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth Laboratory, Barrack road, Dorset DT4 8UB, UK
| | | | - Philipp Antczak
- Institute of Integrative Biology, Biology, Biosciences Building, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK; Center for Molecular Medicine Cologne, University Hospital Cologne, 50931 Cologne, Germany
| | - Ellen Blaker
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth Laboratory, Barrack road, Dorset DT4 8UB, UK
| | - Natalie Burden
- NC3Rs, Gibbs Building, 215 Euston Road, London NW1 2BE, UK
| | - Tom Fisher
- Chemical Regulation Division, Mallard House, 3 Peasholme Green, York YO1 7PX, UK
| | | | | | - Audrey Pearson
- Environment Agency, Chemical Assessment Unit, Red Kite House, Howbery Park, Wallingford, Oxfordshire OX10 8BD, UK
| | | | - Dan Pickford
- Syngenta Ltd, Jealott's Hill International Research Station, Bracknell RG42 6EY, UK
| | - Chris Ramsden
- AgroChemex Environmental, Aldhams Research Farm, Dead Lane, Lawford, Manningtree, Essex CO11 2NF, UK
| | - Anita Rønneseth
- Department of Biological Sciences, University of Bergen, P.O. Box 7803, N-5006 Bergen, Norway
| | - Kathy Ryder
- Northern Ireland Animals (Scientific Procedures) Act (ASPA) Inspectorate, Room C4.3, Castle Buildings, Stormont Estate, Belfast BT4 3SQ, UK
| | - Dominic Sacker
- Covance CRS Research Limited, Shardlow Business Park, London Road, Shardlow DE72 2GD, UK
| | | | - Haruna Watanabe
- National Institute for Environmental Studies (NIES), 16-2 Onogawa, Tsukuba-City, Ibaraki 305-8506 Japan
| | | | | | - Penny Hawkins
- Animals in Science Department, Royal Society for the Prevention of Cruelty to Animals, Wilberforce Way, Southwater, Horsham, West Sussex RH13 9RS, UK
| | - Hans Rufli
- ecotoxsolutions, Unterer Rheinweg 114, CH-4057 Basel, Switzerland
| | - Richard D Handy
- School of Biological and Marine Sciences, University of Plymouth, Plymouth, Devon PL4 8AA, UK
| | - Samuel K Maynard
- AstraZeneca, Global Sustainability, Eastbrook House, Shaftesbury Road, Cambridge CB2 8DU, UK
| | - Miriam N Jacobs
- Department of Toxicology, Centre for Radiation, Chemical and Environmental, Hazards Public Health England, Chilton, Oxfordshire OX11 0RQ, UK
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Inorganic Element Determination of Romanian Populus nigra L. Buds Extract and In Vitro Antiproliferative and Pro-Apoptotic Evaluation on A549 Human Lung Cancer Cell Line. Pharmaceutics 2021; 13:pharmaceutics13070986. [PMID: 34209959 PMCID: PMC8309149 DOI: 10.3390/pharmaceutics13070986] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/11/2021] [Accepted: 06/24/2021] [Indexed: 12/29/2022] Open
Abstract
Populus nigra L. is a plant from Salicaceae family, native in Europe. Many parts of this tree can be used as active ingredients, but the most valuable are the buds. In recent years, a growing number of studies reported their activity in the development of a wide range of pharmacological activities including diabetes, cardiovascular diseases, and cancer. The aim of this study was to determine the phytochemical composition and to evaluate the inorganic elements’ concentration as well as the in vitro antiproliferative and pro-apoptotic potential of a Populus nigra L. buds extract collected from Timișoara (Romania) against A549 human lung cancer cell line. Populus nigra L. bud extract was found to contain twelve different phenolic compounds. The inorganic elements concentrations were below the limit of detection for Co, Pb, and As, whereas Cu = 6.66 µg/g; Cr = 0.79 µg/g; Ni = 3.28 µg/g; Fe = 39.00 µg/g; Zn = 14.84 µg/g; Mn = 0.59 µg/g; Al = 2109.87 µg/g; and Cd = 0.019 µg/g. The extract was tested for the in vitro antiproliferative and pro-apoptotic potential on A549 human lung cancer cell line using different concentrations, namely 10, 25, 50, 75, 100, and 150 μg/mL. Results have shown that poplar bud extract induced a significant decrease of tumor cell viability in a dose-dependent manner with an IC50 = 72.49 μg/mL and blocked the cells in the G0/G1 phase of the cell cycle. Phenomena of early apoptosis (from 1.34 ± 0.33% control cells to 2.68 ± 0.62% at 150 µg/mL) and late apoptosis (from 1.43 ± 0.14% control cells to 5.15 ± 1.02% at 150 µg/mL) were detected by Annexin V-PI double staining. Poplar bud extract can be regarded as a promising candidate for future studies involving lung cancer.
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Saili KS, Cardwell AS, Stubblefield WA. Chronic Toxicity of Cobalt to Marine Organisms: Application of a Species Sensitivity Distribution Approach to Develop International Water Quality Standards. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:1405-1418. [PMID: 33507602 DOI: 10.1002/etc.4993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/20/2020] [Accepted: 01/20/2021] [Indexed: 06/12/2023]
Abstract
Water quality standards for cobalt (Co) have yet to be developed for the European Union or the United States. The primary objective of the present study was to produce a data set comprising marine Co toxicity data that could be used by both the European Union and the United States to determine a predicted-no-effect concentration and ambient water quality criteria, respectively. Ten marine species, ranging from algae to fish, were subjected to chronic Co toxicity tests that were designed to meet international water quality testing standards. Chronic 10% effect concentration values ranged from a low of 1.23 µg dissolved Co/L for red algae (Champia parvula) to a high of 31 800 µg dissolved Co/L for sheepshead minnow (Cyprinodon variegatus). The species sensitivity ranking for chronic marine Co exposure was as follows (from most to least sensitive): C. parvula > Neanthes arenaceodentata (polychaete) > Americamysis bahia (mysid shrimp) > Skeletonema costatum (marine diatom) > Dendraster excentricus (sand dollar) > Mytilus galloprovincialis (mussel) > Strongylocentrotus purpuratus (purple sea urchin) > Crassostrea gigas (oyster) > Dunaliella tertiolecta (marine flagellate) > C. variegatus. Chronic test results indicated that invertebrate and plant species were substantially more sensitive to Co exposure than fish. The chronic toxicity data were used to calculate a species sensitivity distribution, from which a hazardous concentration 5th percentile of 7.09 µg dissolved Co/L (95% CI 0.025-47.3 µg Co/L) was derived. Environ Toxicol Chem 2021;40:1405-1418. © 2021 SETAC.
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Affiliation(s)
- Katerine S Saili
- Environmental and Molecular Toxicology Department, Oregon State University, Corvallis, Oregon, USA
| | - Allison S Cardwell
- Environmental and Molecular Toxicology Department, Oregon State University, Corvallis, Oregon, USA
| | - William A Stubblefield
- Environmental and Molecular Toxicology Department, Oregon State University, Corvallis, Oregon, USA
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20
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Karthikeyan P, Marigoudar SR, Mohan D, Sharma KV, Ramana Murthy MV. Prescribing sea water quality criteria for arsenic, cadmium and lead through species sensitivity distribution. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111612. [PMID: 33396132 DOI: 10.1016/j.ecoenv.2020.111612] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/29/2020] [Accepted: 11/03/2020] [Indexed: 06/12/2023]
Abstract
Water quality standards are essential for regulation of contaminants in marine environment. Seawater quality criteria (SWQC) for arsenic (As), cadmium (Cd) and lead (Pb) have not been developed for India. The aim of this study is to derive the SWQC for the metals based on Species Sensitivity Distribution (SSD). Eight species of sensitive marine organisms belonging to five phyla were assessed for their sensitivity to toxicity of As, Cd and Pb. Median effective concentrations (EC50) and Median Lethal Concentrations (LC50) were derived from the acute toxicity bio-assays. No Observed Effect Concentrations (NOEC), Lowest Observed Effect Concentrations (LOEC) and chronic values were derived from chronic toxicity bio-assays. Diatoms were more sensitive to As with 96 h EC50 of 0.1 mg/l and copepods were more sensitive to Cd and Pb with 96 h EC50 of 0.019 mg/l and 0.05 mg/l respectively. Estimated NOECs ranged from 4.87 to 21.55 µg/l of As, 1.0 to 120 µg/l of Cd and 5.67 to 91.67 µg/l of Pb. Similarly, chronic values (µg/l) were in the range of 6.71-26.1, 1.38-170, and 7.67-91.67 of As, Cd and Pb respectively. The Criterion Maximum Concentration (CMC), Criterion Continuous Concentration (CCC) and Predicted No Effect Concentration (PNEC) values were prescribed as SWQC. The CMC (µg/l) of 19, 1.7 and 17 for As, Cd, and Pb were derived respectively for acute exposure during accidental marine outfalls. The CCC (µg/l) for As was 4.6, 1.1 for Cd and 5.9 for Pb are recommended as SWQC for protection of 95% of marine organisms. PNEC (µg/l) of 3.8 for As, 0.92 for Cd and 4.3 for Pb are suggested for highly disturbed ecosystems, shell fishing and mariculture uses of water bodies. These values are recommended as a baseline for site specific water quality criteria for the coastal waters of the country.
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Affiliation(s)
- Panneerselvam Karthikeyan
- National Centre for Coastal Research (NCCR), Ministry of Earth Sciences, Government of India, NIOT Campus, Pallikaranai, Chennai 600100, India
| | - Shambanagouda R Marigoudar
- National Centre for Coastal Research (NCCR), Ministry of Earth Sciences, Government of India, NIOT Campus, Pallikaranai, Chennai 600100, India.
| | - Dhandapani Mohan
- National Centre for Coastal Research (NCCR), Ministry of Earth Sciences, Government of India, NIOT Campus, Pallikaranai, Chennai 600100, India
| | - Krishna Venkatarama Sharma
- National Centre for Coastal Research (NCCR), Ministry of Earth Sciences, Government of India, NIOT Campus, Pallikaranai, Chennai 600100, India
| | - M V Ramana Murthy
- National Centre for Coastal Research (NCCR), Ministry of Earth Sciences, Government of India, NIOT Campus, Pallikaranai, Chennai 600100, India
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Farzana S, Ruan Y, Wang Q, Wu R, Kai Z, Meng Y, Leung KMY, Lam PKS. Developing interim water quality criteria for emerging chemicals of concern for protecting marine life in the Greater Bay Area of South China. MARINE POLLUTION BULLETIN 2020; 161:111792. [PMID: 33197792 DOI: 10.1016/j.marpolbul.2020.111792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 10/13/2020] [Accepted: 10/17/2020] [Indexed: 06/11/2023]
Abstract
This study aimed to establish marine water quality criteria (MWQC) for emerging chemicals of concern (ECCs) for protecting aquatic life in the Greater Bay Area (GBA) of South China. Despite the frequent occurrence and elevated concentrations of these ECCs in the GBA, there is a lack of regional MWQC for these contaminants. We screened 21 common ECCs that were classified into the following six groups: (1) new persistent organic contaminants; (2) brominated flame retardants; (3) perfluoroalkyl and polyfluoroalkyl substances; (4) pharmaceutically active compounds (PhACs); (5) plasticizers; and (6) personal care products. Globally, MWQC for PhACs remain largely unavailable despite their increasing occurrence in marine environments. Using an integrative scientific approach, we derived interim MWQC for the GBA with specific protection goals. The approach described herein can be applied for the derivation of MWQC for ECCs and the establishment of guidelines for ecological risk assessment in the GBA and other regions.
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Affiliation(s)
- Shazia Farzana
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China
| | - Yuefei Ruan
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
| | - Qi Wang
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Rongben Wu
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Zhang Kai
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
| | - Yan Meng
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
| | - Kenneth M Y Leung
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China.
| | - Paul K S Lam
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; Department of Chemistry, City University of Hong Kong, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China.
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Belanger SE, Carr GJ. "Quantifying the precision of ecological risk: Misunderstandings and errors in the methods for assessment factors versus species sensitivity distributions". ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 198:110684. [PMID: 32408188 DOI: 10.1016/j.ecoenv.2020.110684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 04/23/2020] [Accepted: 04/25/2020] [Indexed: 06/11/2023]
Abstract
The science of species sensitivity distributions (SSDs) is a blend of statistical theory, ecotoxicological testing, study reliability, and biodiversity. The utility of SSDs has been well reviewed and they are viewed as a high tier assessment tool in environmental risk assessment and other disciplines. SSDs seek to improve upon probabilistic extrapolation of laboratory (and sometimes field) collected ecotoxicity data for environmental protection by modeling the diversity of multiple experimental results in the form of a single statistical distribution which reduces or eliminates the need for extrapolation with deterministic assessment factors. SSDs thus depend heavily on both statistical and biological knowledge. In this commentary we review recently published literature identifying areas of improvement based on fundamental statistical theory or application in environmental assessment contexts. We reveal that sound application of SSDs relies heavily upon a grasp of probability distributions, how asymmetric confidence intervals are derived for distributions common to SSDs, the influence of sample size on parameter estimation, and how these are collectively applied across the myriad of regulatory systems globally. Statisticians and ecotoxicologists are inextricably bound together in the goal of actually improving hazard assessment using both probabilistic and deterministic methodologies.
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Affiliation(s)
- Scott E Belanger
- Environmental Stewardship and Sustainability, The Procter & Gamble Company, Cincinnati, OH, 45040, USA.
| | - Gregory J Carr
- Data and Modeling Sciences, The Procter & Gamble Company, Cincinnati, OH, 45040, USA
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