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Moore DW, Ruffle B, McQueen A, Thakali S, Edwards D. Frameworks for screening and risk management of chemicals and advanced materials: A critical review. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2023; 19:1192-1206. [PMID: 35112493 DOI: 10.1002/ieam.4590] [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] [Received: 11/02/2021] [Revised: 01/28/2022] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Despite the evolution over the last half century of regulatory programs and frameworks developed for the evaluation of safety and management of risks associated with chemicals and materials, new and emerging contaminant issues continue to be identified. These recurring issues suggest a need for review and reflection on current approaches and strategies for ensuring the safety of chemicals and materials. Twelve existing frameworks relating to the evaluation and management of chemical or material risk were reviewed to identify potential process improvements for facilitating early identification of potentially problematic substances and better inform risk management strategies (e.g., prohibition, restricted use, or selection of safer alternatives). The frameworks were selected to represent a broad spectrum of regional, national, and international authorities and purposes, including preproduction evaluation of new substances, classification and hazard communication, identification of persistent pollutants, and identification of safer alternatives. Elements common to the frameworks were identified, as well as features unique to select frameworks. A comparative evaluation was performed, and potential new strategies and approaches were identified to inform process improvement recommendations. These recommendations include requiring validated analytical procedures to enable measurement in environmental media, improved data transparency and accessibility, flexibility to incorporate advances into the state of the practice (e.g., new approach methodologies and high-throughput assessment tools), and incorporation of monitoring and adaptive management strategies to enable more timely intervention. Process improvement recommendations are discussed and summarized in a conceptual risk management framework. Integr Environ Assess Manag 2023;19:1192-1206. © 2022 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC). This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.
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Affiliation(s)
- David W Moore
- United States Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, Mississippi, USA
| | | | - Andrew McQueen
- United States Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, Mississippi, USA
| | | | - Deborah Edwards
- ExxonMobil Environmental and Property Solutions Company (retired), Houston, Texas, USA
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2
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Wang X, Li F, Teng Y, Ji C, Wu H. Potential adverse outcome pathways with hazard identification of organophosphate esters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 851:158093. [PMID: 35985583 DOI: 10.1016/j.scitotenv.2022.158093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/09/2022] [Accepted: 08/13/2022] [Indexed: 06/15/2023]
Abstract
Data-driven analysis and pathway-based approaches contribute to reasonable arrangements of limited resources and laboratory tests for continuously emerging commercial chemicals, which provides opportunities to save time and effort for toxicity research. With the widespread usage of organophosphate esters (OPEs) on a global scale, the concentrations generally reached up to micromolar range in environmental media and even in organisms. However, potential adverse effects and toxicity pathways of OPEs have not been systematically assessed. Therefore, it is necessary to review the current situation, formulate the future research priorities, and characterize toxicity mechanisms via data-driven analysis. Results showed that the early toxicity studies focused on neurotoxicity, cytotoxicity, and metabolic disorders. Then the main focus shifted to the mechanisms of cardiotoxicity, endocrine disruption, hepatocytes, reproductive and developmental toxicity to vulnerable sub-populations, such as infants and embryos, affected by OPEs. In addition, several novel OPEs have been emerging, such as bis(2-ethylhexyl)-phenyl phosphate (HDEHP) and oxidation derivatives (OPAsO) generated from organophosphite antioxidants (OPAs), leading to multiple potential ecological and human health risks (neurotoxicity, hepatotoxicity, developmental toxicity, etc.). Notably, in-depth statistical analysis was promising in encapsulating toxicological information to develop adverse outcome pathways (AOPs) frameworks. Subsequently, network-centric analysis and quantitative weight-of-evidence (QWOE) approaches were utilized to construct and evaluate the putative AOPs frameworks of OPEs, showing the moderate confidences of the developed AOPs. In addition, frameworks demonstrated that several events, such as nuclear receptor activation, reactive oxygen species (ROS) production, oxidative stress, and DNA damage, were involved in multiple different adverse outcome (AO), and these AOs had certain degree of connectivity. This study brought new insights into facilitating the complement of AOP efficiently, as well as establishing toxicity pathways framework to inform risk assessment of emerging OPEs.
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Affiliation(s)
- Xiaoqing Wang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Fei Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China.
| | - Yuefa Teng
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Chenglong Ji
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Huifeng Wu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, PR China
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Powell LG, Gillies S, Fernandes TF, Murphy F, Giubilato E, Cazzagon V, Hristozov D, Pizzol L, Blosi M, Costa AL, Prina-Mello A, Bouwmeester H, Sarimveis H, Janer G, Stone V. Developing Integrated Approaches for Testing and Assessment (IATAs) in order to support nanomaterial safety. Nanotoxicology 2022; 16:484-499. [PMID: 35913849 DOI: 10.1080/17435390.2022.2103470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Due to the unique characteristics of nanomaterials (NM) there has been an increase in their use in nanomedicines and innovative medical devices (MD). Although large numbers of NMs have now been developed, comprehensive safety investigations are still lacking. Current gaps in understanding the potential mechanisms of NM-induced toxicity can make it challenging to determine the safety testing necessary to support inclusion of NMs in MD applications. This article provides guidance for implementation of pre-clinical tailored safety assessment strategies with the aim to increase the translation of NMs from bench development to clinical use. Integrated Approaches to Testing and Assessment (IATAs) are a key tool in developing these strategies. IATAs follow an iterative approach to answer a defined question in a specific regulatory context to guide the gathering of relevant information for safety assessment, including existing experimental data, integrated with in silico model predictions where available and appropriate, and/or experimental procedures and protocols for generating new data to fill gaps. This allows NM developers to work toward current guidelines and regulations, while taking NM specific considerations into account. Here, an example IATA for NMs with potential for direct blood contact was developed for the assessment of haemocompatibility. This example IATA brings together the current guidelines for NM safety assessment within a framework that can be used to guide information and data gathering for the safety assessment of intravenously injected NMs. Additionally, the decision framework underpinning this IATA has the potential to be adapted to other testing needs and regulatory contexts.
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Affiliation(s)
| | - S Gillies
- Heriot-Watt University, Edinburgh, UK
| | | | - F Murphy
- Heriot-Watt University, Edinburgh, UK
| | - E Giubilato
- University Ca' Foscari of Venice, Venice, Italy.,GreenDecision Srl, Venice, Italy
| | - V Cazzagon
- University Ca' Foscari of Venice, Venice, Italy
| | - D Hristozov
- University Ca' Foscari of Venice, Venice, Italy
| | - L Pizzol
- GreenDecision Srl, Venice, Italy
| | - M Blosi
- Institute of Science and Technology for Ceramics, CNR, Italy
| | - A L Costa
- Institute of Science and Technology for Ceramics, CNR, Italy
| | - A Prina-Mello
- Trinity College Dublin, The University of Dublin, Dublin, Ireland
| | - H Bouwmeester
- Division of Toxicology, Wageningen University, Wageningen, The Netherlands
| | - H Sarimveis
- National Technical University of Athens, Athens, Greece
| | - G Janer
- Leitat Technological Centre, Barcelona, Spain
| | - V Stone
- Heriot-Watt University, Edinburgh, UK
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Basei G, Rauscher H, Jeliazkova N, Hristozov D. A methodology for the automatic evaluation of data quality and completeness of nanomaterials for risk assessment purposes. Nanotoxicology 2022; 16:195-216. [PMID: 35506346 DOI: 10.1080/17435390.2022.2065222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
This manuscript proposes a methodology to assess the completeness and quality of physicochemical and hazard datasets for risk assessment purposes. The approach is also specifically applicable to similarity assessment as a basis for grouping of (nanoforms of) chemical substances as well as for classification of the substances according to the Classification, Labeling and Packaging regulation. The unique goal of this approach is to assess data quality in such a way that all the steps are automatized, thus reducing reliance on expert judgment. The analysis starts from available (meta)data as provided in the data entry templates developed by the NanoSafety community and used for import into the eNanoMapper database. The methodology is implemented in the templates as a traffic light system-the providers of the data can see in real time the completeness scores calculated by the system for their datasets in green, yellow, or red. This is an interactive feedback feature that is intended to provide an incentive for anyone inserting data into the database to deliver more complete and higher quality datasets. The users of the data can also see this information both in the data entry templates and on the database interface, which enables them to select better datasets for their assessments. The proposed methodology has been partially implemented in the eNanoMapper database and in a Weight of Evidence approach for the regulatory classification of nanomaterials. It was fully implemented in a publicly available online R tool.
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Affiliation(s)
| | - Hubert Rauscher
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | | | - Danail Hristozov
- GreenDecision Srl, Mestre, Italy.,East European Research and Innovation Enterprise, Sofia, Bulgaria
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Basei G, Zabeo A, Rasmussen K, Tsiliki G, Hristozov D. A Weight of Evidence approach to classify nanomaterials according to the EU Classification, Labelling and Packaging Regulation criteria. NANOIMPACT 2021; 24:100359. [PMID: 35559818 DOI: 10.1016/j.impact.2021.100359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/13/2021] [Accepted: 09/30/2021] [Indexed: 06/15/2023]
Abstract
In the context of the European Union (EU) Horizon 2020 GRACIOUS project (Grouping, Read-Across, Characterisation and classification framework for regulatory risk assessment of manufactured nanomaterials and Safer design of nano-enabled products), we proposed a quantitative Weight of Evidence (WoE) approach for hazard classification of nanomaterials (NMs). This approach is based on the requirements of the European Regulation on Classification, Labelling and Packaging of Substances and Mixtures (the CLP regulation), which implements the United Nations' Globally Harmonized System of Classification and Labelling of Chemicals (UN GHS) in the European Union. The goal of this WoE methodology is to facilitate classification of NMs according to CLP criteria, following the decision trees defined in ECHA's CLP regulatory guidance. In the WoE, results from heterogeneous studies are weighted according to data quality and completeness criteria, integrated, and then evaluated by expert judgment to obtain a hazard classification, resulting in a coherent and justifiable methodology. Moreover, the probabilistic nature of the proposed approach enables highlighting the uncertainty in the analysis. The proposed methodology involves the following stages: (1) collection of data for different NMs related to the endpoint of interest: each study related to each NM is referred as a Line of Evidence (LoE); (2) computation of weighted scores for each LoE: each LoE is weighted by a score calculated based on data quality and completeness criteria defined in the GRACIOUS project; (3) comparison and integration of the weighed LoEs for each NM: A Monte Carlo resampling approach is adopted to quantitatively and probabilistically integrate the weighted evidence; and (4) assignment of each NM to a hazard class: according to the results, each NM is assigned to one of the classes defined by the CLP regulation. Furthermore, to facilitate the integration and the classification of the weighted LoEs, an online R tool was developed. Finally, the approach was tested against an endpoint relevant to CLP (Aquatic Toxicity) using data retrieved from the eNanoMapper database, results obtained were consistent to results in REACH registration dossiers and in recent literature.
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Salieri B, Barruetabeña L, Rodríguez-Llopis I, Jacobsen NR, Manier N, Trouiller B, Chapon V, Hadrup N, Jiménez AS, Micheletti C, Merino BS, Brignon JM, Bouillard J, Hischier R. Integrative approach in a safe by design context combining risk, life cycle and socio-economic assessment for safer and sustainable nanomaterials. NANOIMPACT 2021; 23:100335. [PMID: 35559836 DOI: 10.1016/j.impact.2021.100335] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 06/15/2023]
Abstract
Moving towards safe and sustainable innovations is an international policy ambition. In the on-hand manuscript, a concept combining safe by design and sustainability was implemented through the integration of human and environmental risk assessment, life cycle assessment as well as an assessment of the economic viability. The result is a nested and iterative process in form of a decision tree that integrates these three elements in order to achieve sustainable, safe and competitive materials, products or services. This approach, embedded into the stage-gate-model for safe by design, allows to reduce the uncertainty related to the assessment of risks and impacts by improving the quality of the data collected along each stage. In the second part of the manuscript, the application is shown for a case study dealing with the application of nanoparticles for Li-Ion batteries. One of the general conclusions out of this case study is that data gaps are a key aspect in view of the reliability of the results.
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Affiliation(s)
- Beatrice Salieri
- Swiss Federal Laboratories for Materials Science and Technology (Empa), Technology and Society Lab, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland; TEMAS Solutions GmbH, Lätterweg 5, 5212 Hausen, Switzerland.
| | - Leire Barruetabeña
- GAIKER-IK4 Technology Centre, Parque Tecnológico, Ed. 20248.170, Zamudio, Bizkaia, Spain
| | | | - Nicklas Raun Jacobsen
- National Research Centre for the Working Environment, Lersø Park Alle 105, 2100, Copenhagen, Denmark
| | - Nicolas Manier
- INERIS, Parc Alata, BP 2, 60550 Vernueil-en-Halatte, France
| | | | | | - Niels Hadrup
- National Research Centre for the Working Environment, Lersø Park Alle 105, 2100, Copenhagen, Denmark
| | | | | | | | | | | | - Roland Hischier
- Swiss Federal Laboratories for Materials Science and Technology (Empa), Technology and Society Lab, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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Furxhi I, Murphy F, Poland CA, Sheehan B, Mullins M, Mantecca P. Application of Bayesian networks in determining nanoparticle-induced cellular outcomes using transcriptomics. Nanotoxicology 2019; 13:827-848. [PMID: 31140895 DOI: 10.1080/17435390.2019.1595206] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Inroads have been made in our understanding of the risks posed to human health and the environment by nanoparticles (NPs) but this area requires continuous research and monitoring. Machine learning techniques have been applied to nanotoxicology with very encouraging results. This study deals with bridging physicochemical properties of NPs, experimental exposure conditions and in vitro characteristics with biological effects of NPs on a molecular cellular level from transcriptomics studies. The bridging is done by developing and implementing Bayesian Networks (BNs) with or without data preprocessing. The BN structures are derived either automatically or methodologically and compared. Early stage nanotoxicity measurements represent a challenge, not least when attempting to predict adverse outcomes and modeling is critical to understanding the biological effects of exposure to NPs. The preprocessed data-driven BN showed improved performance over automatically structured BN and the BN with unprocessed datasets. The prestructured BN captures inter relationships between NP properties, exposure condition and in vitro characteristics and links those with cellular effects based on statistic correlation findings. Information gain analysis showed that exposure dose, NP and cell line variables were the most influential attributes in predicting the biological effects. The BN methodology proposed in this study successfully predicts a number of toxicologically relevant cellular disrupted biological processes such as cell cycle and proliferation pathways, cell adhesion and extracellular matrix responses, DNA damage and repair mechanisms etc., with a success rate >80%. The model validation from independent data shows a robust and promising methodology for incorporating transcriptomics outcomes in a hazard and, by extension, risk assessment modeling framework by predicting affected cellular functions from experimental conditions.
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Affiliation(s)
- Irini Furxhi
- a Department of Accounting and Finance , Kemmy Business School University of Limerick , Limerick , Ireland
| | - Finbarr Murphy
- a Department of Accounting and Finance , Kemmy Business School University of Limerick , Limerick , Ireland
| | - Craig A Poland
- b ELEGI/Colt Laboratory , Queen's Medical Research Institute, University of Edinburgh , Edinburgh , Scotland
| | - Barry Sheehan
- a Department of Accounting and Finance , Kemmy Business School University of Limerick , Limerick , Ireland
| | - Martin Mullins
- a Department of Accounting and Finance , Kemmy Business School University of Limerick , Limerick , Ireland
| | - Paride Mantecca
- c Department of Earth and Environmental Sciences , Particulate Matter and Health Risk (POLARIS) Research Centre University of Milano Bicocca , Milano , Italy
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Risk Governance of Nanomaterials: Review of Criteria and Tools for Risk Communication, Evaluation, and Mitigation. NANOMATERIALS 2019; 9:nano9050696. [PMID: 31060250 PMCID: PMC6566360 DOI: 10.3390/nano9050696] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 04/24/2019] [Accepted: 04/29/2019] [Indexed: 12/17/2022]
Abstract
Nanotechnologies have been increasingly used in industrial applications and consumer products across several sectors, including construction, transportation, energy, and healthcare. The widespread application of these technologies has raised concerns regarding their environmental, health, societal, and economic impacts. This has led to the investment of enormous resources in Europe and beyond into the development of tools to facilitate the risk assessment and management of nanomaterials, and to inform more robust risk governance process. In this context, several risk governance frameworks have been developed. In our study, we present and review those, and identify a set of criteria and tools for risk evaluation, mitigation, and communication, the implementation of which can inform better risk management decision-making by various stakeholders from e.g., industry, regulators, and the civil society. Based on our analysis, we recommend specific methods from decision science and information technologies that can improve the existing risk governance tools so that they can communicate, evaluate, and mitigate risks more transparently, taking stakeholder perspectives and expert opinion into account, and considering all relevant criteria in establishing the risk-benefit balance of these emerging technologies to enable more robust decisions about the governance of their risks.
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Stone V, Führ M, Feindt PH, Bouwmeester H, Linkov I, Sabella S, Murphy F, Bizer K, Tran L, Ågerstrand M, Fito C, Andersen T, Anderson D, Bergamaschi E, Cherrie JW, Cowan S, Dalemcourt JF, Faure M, Gabbert S, Gajewicz A, Fernandes TF, Hristozov D, Johnston HJ, Lansdown TC, Linder S, Marvin HJP, Mullins M, Purnhagen K, Puzyn T, Sanchez Jimenez A, Scott-Fordsmand JJ, Streftaris G, van Tongeren M, Voelcker NH, Voyiatzis G, Yannopoulos SN, Poortvliet PM. The Essential Elements of a Risk Governance Framework for Current and Future Nanotechnologies. RISK ANALYSIS : AN OFFICIAL PUBLICATION OF THE SOCIETY FOR RISK ANALYSIS 2018; 38:1321-1331. [PMID: 29240986 DOI: 10.1111/risa.12954] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 10/13/2017] [Accepted: 11/06/2017] [Indexed: 06/07/2023]
Abstract
Societies worldwide are investing considerable resources into the safe development and use of nanomaterials. Although each of these protective efforts is crucial for governing the risks of nanomaterials, they are insufficient in isolation. What is missing is a more integrative governance approach that goes beyond legislation. Development of this approach must be evidence based and involve key stakeholders to ensure acceptance by end users. The challenge is to develop a framework that coordinates the variety of actors involved in nanotechnology and civil society to facilitate consideration of the complex issues that occur in this rapidly evolving research and development area. Here, we propose three sets of essential elements required to generate an effective risk governance framework for nanomaterials. (1) Advanced tools to facilitate risk-based decision making, including an assessment of the needs of users regarding risk assessment, mitigation, and transfer. (2) An integrated model of predicted human behavior and decision making concerning nanomaterial risks. (3) Legal and other (nano-specific and general) regulatory requirements to ensure compliance and to stimulate proactive approaches to safety. The implementation of such an approach should facilitate and motivate good practice for the various stakeholders to allow the safe and sustainable future development of nanotechnology.
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Affiliation(s)
| | - Martin Führ
- Darmstadt University of Applied Sciences, Department of Social and Cultural Sciences, Society for Institutional Analysis (Sofia), Darmstadt, Germany
| | - Peter H Feindt
- Wageningen University & Research, Wageningen, The Netherlands
| | - Hans Bouwmeester
- Wageningen University & Research, Wageningen, The Netherlands
- RIKILT Wageningen UR, Wageningen, The Netherlands
| | - Igor Linkov
- Carnegie Mellon University and the U.S. Army Engineer Research and Development Center, Concord, MA, USA
| | | | - Finbarr Murphy
- Kemmy Business School, University of Limerick, Limerick, Ireland
| | - Kilian Bizer
- Georg August University Göttingen, Göttingen, Lower Saxony, Germany
| | - Lang Tran
- Institute of Occupational Medicine, Edinburgh, UK
| | - Marlene Ågerstrand
- Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden
| | - Carlos Fito
- Instituto Tecnológico del Embalaje, Transporte y Logística (ITENE), Spain
| | | | | | - Enrico Bergamaschi
- Department of Public Health and Pediatrics, University of Turin, Torino, Italy
| | - John W Cherrie
- Heriot-Watt University, Edinburgh, UK
- Institute of Occupational Medicine, Edinburgh, UK
| | - Sue Cowan
- Heriot-Watt University, Edinburgh, UK
| | | | - Michael Faure
- Maastricht University, Maastricht, The Netherlands
- Erasmus School of Law, Rotterdam, The Netherlands
| | - Silke Gabbert
- Wageningen University & Research, Wageningen, The Netherlands
| | - Agnieszka Gajewicz
- Laboratory of Environmental Chemometrics, University of Gdańsk, Gdańsk, Poland
| | | | | | | | | | | | | | - Martin Mullins
- Kemmy Business School, University of Limerick, Limerick, Ireland
| | - Kai Purnhagen
- Wageningen University & Research, Wageningen, The Netherlands
| | - Tomasz Puzyn
- Laboratory of Environmental Chemometrics, University of Gdańsk, Gdańsk, Poland
| | | | | | | | - Martie van Tongeren
- Centre for Occupational and Environmental Health, University of Manchester, Manchester, UK
| | - Nicolas H Voelcker
- Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Australia
| | - George Voyiatzis
- Foundation for Research & Technology, Institute of Chemical Engineering Sciences (FORTH/ICE-HT), Patras, Greece
| | - Spyros N Yannopoulos
- Foundation for Research & Technology, Institute of Chemical Engineering Sciences (FORTH/ICE-HT), Patras, Greece
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Martin P, Bladier C, Meek B, Bruyere O, Feinblatt E, Touvier M, Watier L, Makowski D. Weight of Evidence for Hazard Identification: A Critical Review of the Literature. ENVIRONMENTAL HEALTH PERSPECTIVES 2018; 126:076001. [PMID: 30024384 PMCID: PMC6108859 DOI: 10.1289/ehp3067] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 05/22/2018] [Accepted: 05/25/2018] [Indexed: 05/30/2023]
Abstract
BACKGROUND Transparency when documenting and assessing weight of evidence (WOE) has been an area of increasing focus for national and international health agencies. OBJECTIVE The objective of this work was to conduct a critical review of WOE analysis methods as a basis for developing a practical framework for considering and assessing WOE in hazard identification in areas of application at the French Agency for Food, Environmental and Occupational Health and Safety (ANSES). METHODS Based on a review of the literature and directed requests to 63 international and national agencies, 116 relevant articles and guidance documents were selected. The WOE approaches were assessed based on three aspects: the extent of their prescriptive nature, their purpose-specific relevance, and their ease of implementation. RESULTS Twenty-four approaches meeting the specified criteria were identified from selected reviewed documents. Most approaches satisfied one or two of the assessed considerations, but not all three. The approaches were grouped within a practical framework comprising the following four stages: (1) planning the assessment, including scoping, formulating the question, and developing the assessment method; (2) establishing lines of evidence (LOEs), including identifying and selecting studies, assessing their quality, and integrating with studies of similar type; (3) integrating the LOEs to evaluate WOE; and (4) presenting conclusions. DISCUSSION Based on the review, considerations for selecting methods for a wide range of applications are proposed. Priority areas for further development are identified. https://doi.org/10.1289/EHP3067.
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Affiliation(s)
- Pierre Martin
- French Agricultural Research Centre for International Development (CIRAD), Agroecology and sustainable intensification of annual crops (UPR AIDA), Montpellier, France
- AIDA, CIRAD, Montpellier University, Montpellier, France
| | - Claire Bladier
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Maisons-Alfort, France
| | - Bette Meek
- McLaughlin Center for Risk Science, University of Ottawa, Ottawa, Canada
| | - Olivier Bruyere
- WHO Collaborating Center for Public Health Aspects of Musculo-Skeletal Health and Aging, Department of Public Health, Epidemiology, and Health Economics, University of Liège, Liège, Belgium
| | - Eve Feinblatt
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Maisons-Alfort, France
| | - Mathilde Touvier
- Nutritional Epidemiology Research Team (EREN), Center of Research in Epidemiology and Statistics, Sorbonne Paris Cité (CRESS), Institute for Health and Medical Research (INSERM, U1153), French National Institute of Research for Agriculture (INRA, U1125), National Conservatory of Arts and Crafts (CNAM), Paris University, Bobigny, France
| | - Laurence Watier
- Biostatistics, Biomathematics, Pharmacoepidemiology and Infectious Diseases (B2PHI), INSERM, UVSQ, Pasteur Institute, University of Paris-Saclay, Paris, France
| | - David Makowski
- UMR Agronomy, INRA, AgroParisTech, University of Paris-Saclay, Thiverval-Grignon, France
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11
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Golbamaki A, Golbamaki N, Sizochenko N, Rasulev B, Leszczynski J, Benfenati E. Genotoxicity induced by metal oxide nanoparticles: a weight of evidence study and effect of particle surface and electronic properties. Nanotoxicology 2018; 12:1113-1129. [PMID: 29888633 DOI: 10.1080/17435390.2018.1478999] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
The genetic toxicology of nanomaterials is a crucial toxicology issue and one of the least investigated topics. Substantially, the genotoxicity of metal oxide nanomaterials' data is resulting from in vitro comet assay. Current contributions to the genotoxicity data assessed by the comet assay provide a case-by-case evaluation of different types of metal oxides. The existing inconsistency in the literature regarding the genotoxicity testing data requires intelligent assessment strategies, such as weight of evidence evaluation. Two main tasks were performed in the present study. First, the genotoxicity data from comet assay for 16 noncoated metal oxide nanomaterials with different core composition were collected. An evaluation criterion was applied to establish which of these individual lines of evidence were of sufficient quality and what weight could have been given to them in inferring genotoxic results. The collected data were surveyed on (1) minimum necessary characterization points for nanomaterials and (2) principals of correct comet assay testing for nanomaterials. Second, in this study the genotoxicity effect of metal oxide nanomaterials was investigated by quantitative nanostructure-activity relationship approach. A set of quantum-chemical descriptors was developed for all investigated metal oxide nanomaterials. A classification model based on decision tree was developed for the investigated dataset. Thus, three descriptors were identified as the most responsible factors for genotoxicity effect: heat of formation, molecular weight, and surface area of the oxide cluster based on the conductor-like screening model. Conclusively, the proposed genotoxicity assessment strategy is useful to prioritize the study of the nanomaterials for further risk assessment evaluations.
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Affiliation(s)
- Azadi Golbamaki
- a Department of Environmental Health Sciences , Laboratory of Environmental Chemistry and Toxicology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri , Milan , Italy
| | - Nazanin Golbamaki
- a Department of Environmental Health Sciences , Laboratory of Environmental Chemistry and Toxicology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri , Milan , Italy
| | - Natalia Sizochenko
- b Interdisciplinary Center for Nanotoxicity , Jackson State University , Jackson , MS , USA.,c Department of Computer Science , Dartmouth College, Sudikoff Lab , Hanover , NH , USA
| | - Bakhtiyor Rasulev
- b Interdisciplinary Center for Nanotoxicity , Jackson State University , Jackson , MS , USA.,d Department of Coatings and Polymeric Materials , North Dakota State University , Fargo , ND , USA
| | - Jerzy Leszczynski
- b Interdisciplinary Center for Nanotoxicity , Jackson State University , Jackson , MS , USA
| | - Emilio Benfenati
- a Department of Environmental Health Sciences , Laboratory of Environmental Chemistry and Toxicology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri , Milan , Italy
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12
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Accomasso L, Cristallini C, Giachino C. Risk Assessment and Risk Minimization in Nanomedicine: A Need for Predictive, Alternative, and 3Rs Strategies. Front Pharmacol 2018; 9:228. [PMID: 29662451 PMCID: PMC5890110 DOI: 10.3389/fphar.2018.00228] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 02/28/2018] [Indexed: 11/13/2022] Open
Abstract
The use of nanomaterials in medicine has grown very rapidly, leading to a concern about possible health risks. Surely, the application of nanotechnology in medicine has many significant potentialities as it can improve human health in at least three different ways: by contributing to early disease diagnosis, improved treatment outcomes and containment of health care costs. However, toxicology or safety assessment is an integral part of any new medical technology and the nanotechnologies are no exception. The principle aim of nanosafety studies in this frame is to enable safer design of nanomedicines. The most urgent need is finding and validating novel approaches able to extrapolate acute in vitro results for the prediction of chronic in vivo effects and to this purpose a few European initiatives have been launched. While a "safe-by-design" process may be considered as utopic, "safer-by-design" is probably a reachable goal in the field of nanomedicine.
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Affiliation(s)
- Lisa Accomasso
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | | | - Claudia Giachino
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
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13
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Sheehan B, Murphy F, Mullins M, Furxhi I, Costa AL, Simeone FC, Mantecca P. Hazard Screening Methods for Nanomaterials: A Comparative Study. Int J Mol Sci 2018; 19:ijms19030649. [PMID: 29495342 PMCID: PMC5877510 DOI: 10.3390/ijms19030649] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 02/14/2018] [Accepted: 02/15/2018] [Indexed: 11/25/2022] Open
Abstract
Hazard identification is the key step in risk assessment and management of manufactured nanomaterials (NM). However, the rapid commercialisation of nano-enabled products continues to out-pace the development of a prudent risk management mechanism that is widely accepted by the scientific community and enforced by regulators. However, a growing body of academic literature is developing promising quantitative methods. Two approaches have gained significant currency. Bayesian networks (BN) are a probabilistic, machine learning approach while the weight of evidence (WoE) statistical framework is based on expert elicitation. This comparative study investigates the efficacy of quantitative WoE and Bayesian methodologies in ranking the potential hazard of metal and metal-oxide NMs—TiO2, Ag, and ZnO. This research finds that hazard ranking is consistent for both risk assessment approaches. The BN and WoE models both utilize physico-chemical, toxicological, and study type data to infer the hazard potential. The BN exhibits more stability when the models are perturbed with new data. The BN has the significant advantage of self-learning with new data; however, this assumes all input data is equally valid. This research finds that a combination of WoE that would rank input data along with the BN is the optimal hazard assessment framework.
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Affiliation(s)
- Barry Sheehan
- Department of Accounting and Finance, University of Limerick, V94PH93 Limerick, Ireland.
| | - Finbarr Murphy
- Department of Accounting and Finance, University of Limerick, V94PH93 Limerick, Ireland.
| | - Martin Mullins
- Department of Accounting and Finance, University of Limerick, V94PH93 Limerick, Ireland.
| | - Irini Furxhi
- Department of Accounting and Finance, University of Limerick, V94PH93 Limerick, Ireland.
| | - Anna L Costa
- Institute of Science and Technology for Ceramics (CNR-ISTEC), National Research Council of Italy, Via Granarolo 64, 48018 Faenza (RA), Italy.
| | - Felice C Simeone
- Institute of Science and Technology for Ceramics (CNR-ISTEC), National Research Council of Italy, Via Granarolo 64, 48018 Faenza (RA), Italy.
| | - Paride Mantecca
- Department of Earth and Environmental Sciences, Particulate Matter and Health Risk (POLARIS) Research Centre, University of Milano Bicocca, 20126 Milano, Italy.
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14
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Leveraging Big Data Tools and Technologies: Addressing the Challenges of the Water Quality Sector. SUSTAINABILITY 2017. [DOI: 10.3390/su9122160] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Environmental Risk Assessment Strategy for Nanomaterials. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14101251. [PMID: 29048395 PMCID: PMC5664752 DOI: 10.3390/ijerph14101251] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/01/2017] [Accepted: 10/09/2017] [Indexed: 11/16/2022]
Abstract
An Environmental Risk Assessment (ERA) for nanomaterials (NMs) is outlined in this paper. Contrary to other recent papers on the subject, the main data requirements, models and advancement within each of the four risk assessment domains are described, i.e., in the: (i) materials, (ii) release, fate and exposure, (iii) hazard and (iv) risk characterisation domains. The material, which is obviously the foundation for any risk assessment, should be described according to the legislatively required characterisation data. Characterisation data will also be used at various levels within the ERA, e.g., exposure modelling. The release, fate and exposure data and models cover the input for environmental distribution models in order to identify the potential (PES) and relevant exposure scenarios (RES) and, subsequently, the possible release routes, both with regard to which compartment(s) NMs are distributed in line with the factors determining the fate within environmental compartment. The initial outcome in the risk characterisation will be a generic Predicted Environmental Concentration (PEC), but a refined PEC can be obtained by applying specific exposure models for relevant media. The hazard information covers a variety of representative, relevant and reliable organisms and/or functions, relevant for the RES and enabling a hazard characterisation. The initial outcome will be hazard characterisation in test systems allowing estimating a Predicted No-Effect concentration (PNEC), either based on uncertainty factors or on a NM adapted version of the Species Sensitivity Distributions approach. The risk characterisation will either be based on a deterministic risk ratio approach (i.e., PEC/PNEC) or an overlay of probability distributions, i.e., exposure and hazard distributions, using the nano relevant models.
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16
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Drew NM, Kuempel ED, Pei Y, Yang F. A quantitative framework to group nanoscale and microscale particles by hazard potency to derive occupational exposure limits: Proof of concept evaluation. Regul Toxicol Pharmacol 2017; 89:253-267. [PMID: 28789940 PMCID: PMC5875420 DOI: 10.1016/j.yrtph.2017.08.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/18/2017] [Accepted: 08/03/2017] [Indexed: 11/28/2022]
Abstract
The large and rapidly growing number of engineered nanomaterials (ENMs) presents a challenge to assessing the potential occupational health risks. An initial database of 25 rodent studies including 1929 animals across various experimental designs and material types was constructed to identify materials that are similar with respect to their potency in eliciting neutrophilic pulmonary inflammation, a response relevant to workers. Doses were normalized across rodent species, strain, and sex as the estimated deposited particle mass dose per gram of lung. Doses associated with specific measures of pulmonary inflammation were estimated by modeling the continuous dose-response relationships using benchmark dose modeling. Hierarchical clustering was used to identify similar materials. The 18 nanoscale and microscale particles were classified into four potency groups, which varied by factors of approximately two to 100. Benchmark particles microscale TiO2 and crystalline silica were in the lowest and highest potency groups, respectively. Random forest methods were used to identify the important physicochemical predictors of pulmonary toxicity, and group assignments were correctly predicted for five of six new ENMs. Proof-of-concept was demonstrated for this framework. More comprehensive data are needed for further development and validation for use in deriving categorical occupational exposure limits.
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Affiliation(s)
- Nathan M Drew
- National Institute for Occupational Safety and Health (NIOSH), Nanotechnology Research Center (NTRC), Cincinnati, OH 45226, USA.
| | - Eileen D Kuempel
- National Institute for Occupational Safety and Health (NIOSH), Nanotechnology Research Center (NTRC), Cincinnati, OH 45226, USA
| | - Ying Pei
- West Virginia University, Department of Industrial and Management System Engineering, Morgantown, WV 26506, USA
| | - Feng Yang
- West Virginia University, Department of Industrial and Management System Engineering, Morgantown, WV 26506, USA
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17
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Møller P, Jacobsen NR. Weight of evidence analysis for assessing the genotoxic potential of carbon nanotubes. Crit Rev Toxicol 2017; 47:867-884. [DOI: 10.1080/10408444.2017.1367755] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen K, Denmark
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18
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Musee N. A model for screening and prioritizing consumer nanoproduct risks: A case study from South Africa. ENVIRONMENT INTERNATIONAL 2017; 100:121-131. [PMID: 28089582 DOI: 10.1016/j.envint.2017.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 12/16/2016] [Accepted: 01/05/2017] [Indexed: 06/06/2023]
Abstract
The potential risks of the increasing variety and volume of engineered nanomaterials (ENMs) entering into the ecosystem remain poorly quantified. In recent years, information essential to evaluate the ecological risks of ENMs has increased. However, the data are highly fragmented, limited, or severely lacking. This limits the usefulness of the information to support holistic screening and prioritization of potentially harmful ENMs. To screen and prioritize ENMs risks, we adopted a two-phased approach. First, a holistic framework model was developed to integrate a diverse set of factors aimed to assess the potential hazard, exposure, and in turn, risk to the ecosystem of ENMs from a given consumer nanoproduct. Secondly, using published literature we created a database of consumer nanoproduct categories, and types based on embedded ENMs type. The database consisted of eight consumer product categories, eleven different types of ENMs, and twenty-three nanoproduct types. The model results indicates the largest quantities of ENMs were released from sunscreens, textiles, cosmetics and paints with dominant ENMs quantities in descending order (based on quantity) as nTiO2>nZnO>nSiO2>nAg, and nFe2O3. In addition, according to the results from this study, nAg from washing machine were found to likely the highest risk to the environment. Overall, our model-derived results based on the case study illustrated: (i) the holistic framework's ability to screen, prioritize, rank, and compare ENMs potential exposure and risks among different nanoproducts categories and types, (ii) the derived risk estimations could support nanowastes classification with likelihood of non-uniformity of nanowastes classes even from the same nanoproduct category (e.g. cosmetics), and (iii) the lack of a mass-based criteria specific for EMNs impedes realistic exposure and risk evaluation in the ecological systems.
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Affiliation(s)
- Ndeke Musee
- Department of Chemical Engineering, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa.
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19
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Marvin HJP, Bouzembrak Y, Janssen EM, van der Zande M, Murphy F, Sheehan B, Mullins M, Bouwmeester H. Application of Bayesian networks for hazard ranking of nanomaterials to support human health risk assessment. Nanotoxicology 2017; 11:123-133. [DOI: 10.1080/17435390.2016.1278481] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hans J. P. Marvin
- Wageningen University and Research, RIKILT, Wageningen, the Netherlands
| | - Yamine Bouzembrak
- Wageningen University and Research, RIKILT, Wageningen, the Netherlands
| | - Esmée M. Janssen
- Wageningen University and Research, RIKILT, Wageningen, the Netherlands
| | | | | | - Barry Sheehan
- Kemmy Business School, University of Limerick, Ireland
| | | | - Hans Bouwmeester
- Wageningen University and Research, RIKILT, Wageningen, the Netherlands
- Division of Toxicology, Wageningen University, Wageningen, the Netherlands
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20
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Yost EE, Stanek J, Burgoon LD. A decision analysis framework for estimating the potential hazards for drinking water resources of chemicals used in hydraulic fracturing fluids. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 574:1544-1558. [PMID: 27666475 PMCID: PMC5776703 DOI: 10.1016/j.scitotenv.2016.08.167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/22/2016] [Accepted: 08/22/2016] [Indexed: 05/27/2023]
Abstract
Despite growing concerns over the potential for hydraulic fracturing to impact drinking water resources, there are limited data available to identify chemicals used in hydraulic fracturing fluids that may pose public health concerns. In an effort to explore these potential hazards, a multi-criteria decision analysis (MCDA) framework was employed to analyze and rank selected subsets of these chemicals by integrating data on toxicity, frequency of use, and physicochemical properties that describe transport in water. Data used in this analysis were obtained from publicly available databases compiled by the United States Environmental Protection Agency (EPA) as part of a larger study on the potential impacts of hydraulic fracturing on drinking water. Starting with nationwide hydraulic fracturing chemical usage data from EPA's analysis of the FracFocus Chemical Disclosure Registry 1.0, MCDAs were performed on chemicals that had either noncancer toxicity values (n=37) or cancer-specific toxicity values (n=10). The noncancer MCDA was then repeated for subsets of chemicals reported in three representative states (Texas, n=31; Pennsylvania, n=18; and North Dakota, n=20). Within each MCDA, chemicals received scores based on relative toxicity, relative frequency of use, and physicochemical properties (mobility in water, volatility, persistence). Results show a relative ranking of these chemicals based on hazard potential, and provide preliminary insight into chemicals that may be more likely than others to impact drinking water resources. Comparison of nationwide versus state-specific analyses indicates regional differences in the chemicals that may be of more concern to drinking water resources, although many chemicals were commonly used and received similar overall hazard rankings. Several chemicals highlighted by these MCDAs have been reported in groundwater near areas of hydraulic fracturing activity. This approach is intended as a preliminary analysis, and represents one possible method for integrating data to explore potential public health impacts.
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Affiliation(s)
- Erin E Yost
- United States Environmental Protection Agency, Office of Research and Development, National Center for Environmental Assessment, Research Triangle Park, NC, United States
| | - John Stanek
- United States Environmental Protection Agency, Office of Research and Development, National Center for Environmental Assessment, Research Triangle Park, NC, United States
| | - Lyle D Burgoon
- United States Environmental Protection Agency, Office of Research and Development, National Center for Environmental Assessment, Research Triangle Park, NC, United States.
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21
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The changing face of nanomaterials: Risk assessment challenges along the value chain. Regul Toxicol Pharmacol 2016; 84:105-115. [PMID: 27998719 DOI: 10.1016/j.yrtph.2016.12.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/17/2016] [Accepted: 12/15/2016] [Indexed: 12/25/2022]
Abstract
Risk assessment (RA) of manufactured nanomaterials (MNM) is essential for regulatory purposes and risk management activities. Similar to RA of "classical" chemicals, MNM RA requires knowledge about exposure as well as of hazard potential and dose response relationships. What makes MNM RA especially challenging is the multitude of materials (which is expected to increase substantially in the future), the complexity of MNM value chains and life cycles, the accompanying possible changes in material properties over time and in contact with various environmental and organismal milieus, and the difficulties to obtain proper exposure data and to consider the proper dose metric. This article discusses these challenges and also critically overviews the current state of the art regarding MNM RA approaches.
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22
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Murphy F, Sheehan B, Mullins M, Bouwmeester H, Marvin HJP, Bouzembrak Y, Costa AL, Das R, Stone V, Tofail SAM. A Tractable Method for Measuring Nanomaterial Risk Using Bayesian Networks. NANOSCALE RESEARCH LETTERS 2016; 11:503. [PMID: 27848238 PMCID: PMC5110451 DOI: 10.1186/s11671-016-1724-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 11/07/2016] [Indexed: 05/27/2023]
Abstract
While control banding has been identified as a suitable framework for the evaluation and the determination of potential human health risks associated with exposure to nanomaterials (NMs), the approach currently lacks any implementation that enjoys widespread support. Large inconsistencies in characterisation data, toxicological measurements and exposure scenarios make it difficult to map and compare the risk associated with NMs based on physicochemical data, concentration and exposure route. Here we demonstrate the use of Bayesian networks as a reliable tool for NM risk estimation. This tool is tractable, accessible and scalable. Most importantly, it captures a broad span of data types, from complete, high quality data sets through to data sets with missing data and/or values with a relatively high spread of probability distribution. The tool is able to learn iteratively in order to further refine forecasts as the quality of data available improves. We demonstrate how this risk measurement approach works on NMs with varying degrees of risk potential, namely, carbon nanotubes, silver and titanium dioxide. The results afford even non-experts an accurate picture of the occupational risk probabilities associated with these NMs and, in doing so, demonstrated how NM risk can be evaluated into a tractable, quantitative risk comparator.
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Affiliation(s)
- Finbarr Murphy
- Kemmy Business School, University of Limerick, Limerick, Ireland
| | - Barry Sheehan
- Kemmy Business School, University of Limerick, Limerick, Ireland
| | - Martin Mullins
- Kemmy Business School, University of Limerick, Limerick, Ireland
| | - Hans Bouwmeester
- RIKILT Wageningen University & Research (WR), Akkermaalsbos 2, 6708 PD Wageningen, The Netherlands
- Division of Toxicology, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Hans J. P. Marvin
- RIKILT Wageningen University & Research (WR), Akkermaalsbos 2, 6708 PD Wageningen, The Netherlands
| | - Yamine Bouzembrak
- RIKILT Wageningen University & Research (WR), Akkermaalsbos 2, 6708 PD Wageningen, The Netherlands
| | - Anna L. Costa
- ISTEC-CNR, Via Granarolo, 64, I-48018 Faenza, RA Italy
| | - Rasel Das
- Nanotechnology and Catalysis Research Center, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Vicki Stone
- Heriot-Watt University, Edinburgh, EH14 4AS Scotland, UK
| | - Syed A. M. Tofail
- Department of Physics, and Bernal Institute, University of Limerick, Limerick, Ireland
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23
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Landsiedel R. Concern-driven integrated approaches for the grouping, testing and assessment of nanomaterials. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 218:1376-1380. [PMID: 26586635 DOI: 10.1016/j.envpol.2015.10.060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/30/2015] [Accepted: 10/31/2015] [Indexed: 06/05/2023]
Abstract
NM's potential to induce adverse effects in humans or the environment is being addressed in numerous research projects, and methods and tools for NM hazard identification and risk assessment are advancing. This article describes how integrated approaches for the testing and assessment of NMs can ensure the safety of nanomaterials, while adhering to the 3Rs principle.
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Affiliation(s)
- Robert Landsiedel
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany.
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24
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Shatkin JA, Ong KJ. Alternative Testing Strategies for Nanomaterials: State of the Science and Considerations for Risk Analysis. RISK ANALYSIS : AN OFFICIAL PUBLICATION OF THE SOCIETY FOR RISK ANALYSIS 2016; 36:1564-1580. [PMID: 27273523 DOI: 10.1111/risa.12642] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 03/02/2016] [Accepted: 04/19/2016] [Indexed: 06/06/2023]
Abstract
The rapid growth of the nanotechnology industry has warranted equal progress in the nanotoxicology and risk assessment fields. In vivo models have traditionally been used to determine human and environmental risk for chemicals; however, the use of these tests has limitations, and there are global appeals to develop reliable alternatives to animal testing. Many have investigated the use of alternative (nonanimal) testing methods and strategies have quickly developed and resulted in the generation of large toxicological data sets for numerous nanomaterials (NMs). Due to the novel physicochemical properties of NMs that are related to surface characteristics, the approach toward toxicity test development has distinct considerations from traditional chemicals, bringing new requirements for adapting these approaches for NMs. The methodical development of strategies that combine multiple alternative tests can be useful for predictive NM risk assessment and help screening-level decision making. This article provides an overview of the main developments in alternative methods and strategies for reducing uncertainty in NM risk assessment, including advantages and disadvantages of in vitro, ex vivo, and in silico methods, and examples of existing comprehensive strategies. In addition, knowledge gaps are identified toward improvements for experimental and strategy design, specifically highlighting the need to represent realistic exposure scenarios and to consider NM-specific concerns such as characterization, assay interferences, and standardization. Overall, this article aims to improve the reliability and utility of alternative testing methods and strategies for risk assessment of manufactured NMs.
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Affiliation(s)
| | - K J Ong
- Vireo Advisors, LLC, Boston, MA, USA
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25
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Hristozov D, Zabeo A, Alstrup Jensen K, Gottardo S, Isigonis P, Maccalman L, Critto A, Marcomini A. Demonstration of a modelling-based multi-criteria decision analysis procedure for prioritisation of occupational risks from manufactured nanomaterials. Nanotoxicology 2016; 10:1215-28. [DOI: 10.3109/17435390.2016.1144827] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Danail Hristozov
- Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari Venice, Venice, Italy,
| | - Alex Zabeo
- Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari Venice, Venice, Italy,
| | - Keld Alstrup Jensen
- The National Research Center for the Working Environment, Copenhagen, Denmark,
| | | | - Panagiotis Isigonis
- Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari Venice, Venice, Italy,
| | | | - Andrea Critto
- Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari Venice, Venice, Italy,
| | - Antonio Marcomini
- Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari Venice, Venice, Italy,
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26
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Holden PA, Gardea-Torresdey J, Klaessig F, Turco RF, Mortimer M, Hund-Rinke K, Hubal EAC, Avery D, Barceló D, Behra R, Cohen Y, Deydier-Stephan L, Lee Ferguson P, Fernandes TF, Harthorn BH, Henderson WM, Hoke RA, Hristozov D, Johnston JM, Kane AB, Kapustka L, Keller AA, Lenihan HS, Lovell W, Murphy CJ, Nisbet RM, Petersen EJ, Salinas ER, Scheringer M, Sharma M, Speed DE, Sultan Y, Westerhoff P, White JC, Wiesner MR, Wong EM, Xing B, Horan MS, Godwin HA, Nel AE. Considerations of Environmentally Relevant Test Conditions for Improved Evaluation of Ecological Hazards of Engineered Nanomaterials. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:6124-45. [PMID: 27177237 PMCID: PMC4967154 DOI: 10.1021/acs.est.6b00608] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Engineered nanomaterials (ENMs) are increasingly entering the environment with uncertain consequences including potential ecological effects. Various research communities view differently whether ecotoxicological testing of ENMs should be conducted using environmentally relevant concentrations-where observing outcomes is difficult-versus higher ENM doses, where responses are observable. What exposure conditions are typically used in assessing ENM hazards to populations? What conditions are used to test ecosystem-scale hazards? What is known regarding actual ENMs in the environment, via measurements or modeling simulations? How should exposure conditions, ENM transformation, dose, and body burden be used in interpreting biological and computational findings for assessing risks? These questions were addressed in the context of this critical review. As a result, three main recommendations emerged. First, researchers should improve ecotoxicology of ENMs by choosing test end points, duration, and study conditions-including ENM test concentrations-that align with realistic exposure scenarios. Second, testing should proceed via tiers with iterative feedback that informs experiments at other levels of biological organization. Finally, environmental realism in ENM hazard assessments should involve greater coordination among ENM quantitative analysts, exposure modelers, and ecotoxicologists, across government, industry, and academia.
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Affiliation(s)
- Patricia A. Holden
- Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106, United States
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
| | - Jorge Gardea-Torresdey
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
- Department of Chemistry, Environmental Science and Engineering PhD Program, University of Texas, El Paso, Texas 79968, United States
| | - Fred Klaessig
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
- Pennsylvania Bio Nano Systems, Doylestown, Pennsylvania 18901, United States
| | - Ronald F. Turco
- College of Agriculture, Laboratory for Soil Microbiology, Purdue University, West Lafayette, Indiana 47907, United States
| | - Monika Mortimer
- Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106, United States
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Kerstin Hund-Rinke
- Fraunhofer Institute for Molecular Biology and Applied Ecology, D-57392 Schmallenberg, Germany
| | - Elaine A. Cohen Hubal
- Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, United States
| | - David Avery
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
| | - Damià Barceló
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona 08034, Spain
- Institut Català de Recerca de l’Aigua (ICRA), Parc Científic i Tecnològic de la Universitat de Girona, Girona 17003, Spain
| | - Renata Behra
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Yoram Cohen
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California Los Angeles, California 90095, United States
- Chemical and Biomolecular Engineering Department, University of California Los Angeles, California 90095, United States
| | | | - Patrick Lee Ferguson
- Department of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
- Center for the Environmental Implications of NanoTechnology (CEINT), Duke University, Durham, North Carolina 27708, United States
| | | | - Barbara Herr Harthorn
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
- Center for Nanotechnology in Society, University of California, Santa Barbara, California 93106
- Department of Anthropology, University of California, Santa Barbara, California 93106
| | - William Matthew Henderson
- Office of Research and Development, National Exposure Research Laboratory, U.S. Environmental Protection Agency, Athens, Georgia 30605, United States
| | - Robert A. Hoke
- E.I. du Pont de Nemours and Company, Newark, Delaware 19711, United States
| | - Danail Hristozov
- Department of Environmental Sciences, Informatics and Statistics, University Ca' Foscari Venice, Venice 30123, Italy
| | - John M. Johnston
- Office of Research and Development, National Exposure Research Laboratory, U.S. Environmental Protection Agency, Athens, Georgia 30605, United States
| | - Agnes B. Kane
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island 02912, United States
| | | | - Arturo A. Keller
- Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106, United States
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
| | - Hunter S. Lenihan
- Bren School of Environmental Science and Management, University of California, Santa Barbara, California 93106, United States
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
| | - Wess Lovell
- Vive Crop Protection Inc, Toronto, Ontario M5G 1L6, Canada
| | - Catherine J. Murphy
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Roger M. Nisbet
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, California 93106, United States
| | - Elijah J. Petersen
- Biosystems and Biomaterials Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Edward R. Salinas
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen, D-67056, Germany
| | - Martin Scheringer
- Institute for Chemical and Bioengineering, ETH Zürich, 8093 Zürich, Switzerland
| | - Monita Sharma
- PETA International Science Consortium, Ltd., London N1 9RL, England, United Kingdom
| | - David E. Speed
- Globalfoundries, Corporate EHS, Hopewell Junction, New York 12533, United States
| | - Yasir Sultan
- Environment Canada, Gatineau, Quebec J8X 4C8, Canada
| | - Paul Westerhoff
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287, United States
| | - Jason C. White
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06504, United States
| | - Mark R. Wiesner
- Department of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
- Center for the Environmental Implications of NanoTechnology (CEINT), Duke University, Durham, North Carolina 27708, United States
| | - Eva M. Wong
- Office of Pollution Prevention and Toxics, U.S. Environmental Protection Agency, Washington, D.C. 20460, United States
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Meghan Steele Horan
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
| | - Hilary A. Godwin
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California Los Angeles, California 90095, United States
- Department of Environmental Health Sciences, Fielding School of Public Health, University of California, Los Angeles, California 90095, United States
- Institute of the Environment and Sustainability, University of California, Los Angeles, California 90095, United States
| | - André E. Nel
- University of California Center for Environmental Implications of Nanotechnology (UC CEIN), University of California, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California Los Angeles, California 90095, United States
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California 90095, United States
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Collier ZA, Gust KA, Gonzalez-Morales B, Gong P, Wilbanks MS, Linkov I, Perkins EJ. A weight of evidence assessment approach for adverse outcome pathways. Regul Toxicol Pharmacol 2016; 75:46-57. [DOI: 10.1016/j.yrtph.2015.12.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 12/22/2015] [Accepted: 12/22/2015] [Indexed: 01/07/2023]
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Jemec A, Kahru A, Potthoff A, Drobne D, Heinlaan M, Böhme S, Geppert M, Novak S, Schirmer K, Rekulapally R, Singh S, Aruoja V, Sihtmäe M, Juganson K, Käkinen A, Kühnel D. An interlaboratory comparison of nanosilver characterisation and hazard identification: Harmonising techniques for high quality data. ENVIRONMENT INTERNATIONAL 2016; 87:20-32. [PMID: 26638016 DOI: 10.1016/j.envint.2015.10.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 10/26/2015] [Accepted: 10/26/2015] [Indexed: 05/02/2023]
Abstract
Within the FP7 EU project NanoValid a consortium of six partners jointly investigated the hazard of silver nanoparticles (AgNPs) paying special attention to methodical aspects that are important for providing high-quality ecotoxicity data. Laboratories were supplied with the same original stock dispersion of AgNPs. All partners applied a harmonised procedure for storage and preparation of toxicity test suspensions. Altogether ten different toxicity assays with a range of environmentally relevant test species from different trophic levels were conducted in parallel to AgNP characterisation in the respective test media. The paper presents a comprehensive dataset of toxicity values and AgNP characteristics like hydrodynamic sizes of AgNP agglomerates and the share (%) of Ag(+)-species (the concentration of Ag(+)-species in relation to the total measured concentration of Ag). The studied AgNP preparation (20.4±6.8 nm primary size, mean total Ag concentration 41.14 mg/L, 46-68% of soluble Ag(+)-species in stock, 123.8±12.2 nm mean z-average value in dH2O) showed extreme toxicity to crustaceans Daphnia magna, algae Pseudokirchneriella subcapitata and zebrafish Danio rerio embryos (EC50<0.01 mg total Ag/L), was very toxic in the in vitro assay with rainbow trout Oncorhynchus mykiss gut cells (EC50: 0.01-1 mg total Ag/L); toxic to bacteria Vibrio fischeri, protozoa Tetrahymena thermophila (EC50: 1-10 mg total Ag/L) and harmful to marine crustaceans Artemia franciscana (EC50: 10-100 mg total Ag/L). Along with AgNPs, also the toxicity of AgNO3 was analyzed. The toxicity data revealed the same hazard ranking for AgNPs and AgNO3 (i.e. the EC50 values were in the same order of magnitude) proving the importance of soluble Ag(+)-species analysis for predicting the hazard of AgNPs. The study clearly points to the need for harmonised procedures for the characterisation of NMs. Harmonised procedures should consider: (i) measuring the AgNP properties like hydrodynamic size and metal ions species in each toxicity test medium at a range of concentrations, and (ii) including soluble metal salt control both in toxicity testing as well as in Ag(+)-species measurements. The present study is among the first nanomaterial interlaboratory comparison studies with the aim to improve the hazard identification testing protocols.
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Affiliation(s)
- Anita Jemec
- University of Ljubljana, Biotechnical Faculty, Večna pot 111, 1000 Ljubljana, Slovenia.
| | - Anne Kahru
- National Institute of Chemical Physics and Biophysics, Laboratory of Environmental Toxicology, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Annegret Potthoff
- Fraunhofer Institute for Ceramic Technologies and Systems, Winterbergstrasse 28, 01277 Dresden, Germany
| | - Damjana Drobne
- University of Ljubljana, Biotechnical Faculty, Večna pot 111, 1000 Ljubljana, Slovenia
| | - Margit Heinlaan
- National Institute of Chemical Physics and Biophysics, Laboratory of Environmental Toxicology, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Steffi Böhme
- Helmholtz-Centre for Environmental Research - UFZ, Department of Bioanalytical Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Mark Geppert
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133 Postfach 611, 8600 Dübendorf, Switzerland
| | - Sara Novak
- University of Ljubljana, Biotechnical Faculty, Večna pot 111, 1000 Ljubljana, Slovenia
| | - Kristin Schirmer
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133 Postfach 611, 8600 Dübendorf, Switzerland
| | - Rohit Rekulapally
- Centre for Cellular & Molecular Biology, Habsiguda, Hyderabad, Telangana 500007, India
| | - Shashi Singh
- Centre for Cellular & Molecular Biology, Habsiguda, Hyderabad, Telangana 500007, India
| | - Villem Aruoja
- National Institute of Chemical Physics and Biophysics, Laboratory of Environmental Toxicology, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Mariliis Sihtmäe
- National Institute of Chemical Physics and Biophysics, Laboratory of Environmental Toxicology, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Katre Juganson
- National Institute of Chemical Physics and Biophysics, Laboratory of Environmental Toxicology, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Aleksandr Käkinen
- National Institute of Chemical Physics and Biophysics, Laboratory of Environmental Toxicology, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Dana Kühnel
- Helmholtz-Centre for Environmental Research - UFZ, Department of Bioanalytical Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
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Abstract
The nanoparticles are a miracle invention of the century that has opened novel avenues of applications in various fields. The safety aspect of exposure to nanoparticles for humans, plants, animals, soil micro-flora, and ecosystem at large has been questioned. The safety concern can be addressed by laboratory studies to assess the actual risk and recommend exposure limits and related regulation. There is also a suggestion for considering the nanoparticle form of conventional compounds as a new chemical and subject it to safety assessment in line with the chemical regulatory agencies. In the light of the current scenario of popularity and safety concerns regarding nanoparticles, the use of ancient metal based forms like, Bhasma is revisited in the present article. The current approach of green synthesis of nanoparticles is compared with the Ayurveda Rasayana Shastra guidelines of Bhasma preparation and modern preparation of engineered nanoparticles. Since the benefits of nanotechnology are undeniable, and safety concerns are also not ungrounded, there is a pressing need to revisit the ways nanoparticles are manufactured, and to carry out safety assessment by the techniques specially adapted for this novel compound.
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Affiliation(s)
| | - Sonal R Bakshi
- Institute of Science, Nirma University, Ahmedabad, Gujarat, India
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Linkov I, Massey O, Keisler J, Rusyn I, Hartung T. From "weight of evidence" to quantitative data integration using multicriteria decision analysis and Bayesian methods. ALTEX-ALTERNATIVES TO ANIMAL EXPERIMENTATION 2015; 32:3-8. [PMID: 25592482 PMCID: PMC5317204 DOI: 10.14573/altex.1412231] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
“Weighing” available evidence in the process of decision-making is unavoidable, yet it is one step that routinely raises suspicions: what evidence should be used, how much does it weigh, and whose thumb may be tipping the scales? This commentary aims to evaluate the current state and future roles of various types of evidence for hazard assessment as it applies to environmental health. In its recent evaluation of the US Environmental Protection Agency’s Integrated Risk Information System assessment process, the National Research Council committee singled out the term “weight of evidence” (WoE) for critique, deeming the process too vague and detractive to the practice of evaluating human health risks of chemicals. Moving the methodology away from qualitative, vague and controversial methods towards generalizable, quantitative and transparent methods for appropriately managing diverse lines of evidence is paramount for both regulatory and public acceptance of the hazard assessments. The choice of terminology notwithstanding, a number of recent Bayesian WoE-based methods, the emergence of multi criteria decision analysis for WoE applications, as well as the general principles behind the foundational concepts of WoE, show promise in how to move forward and regain trust in the data integration step of the assessments. We offer our thoughts on the current state of WoE as a whole and while we acknowledge that many WoE applications have been largely qualitative and subjective in nature, we see this as an opportunity to turn WoE towards a quantitative direction that includes Bayesian and multi criteria decision analysis.
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Affiliation(s)
- Igor Linkov
- US Army Engineer Research and Development Center, Concord, MA, USA
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Sha B, Gao W, Cui X, Wang L, Xu F. The potential health challenges of TiO2nanomaterials. J Appl Toxicol 2015; 35:1086-101. [DOI: 10.1002/jat.3193] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 05/10/2015] [Accepted: 05/10/2015] [Indexed: 01/09/2023]
Affiliation(s)
- Baoyong Sha
- School of Basic Medical Science; Xi'an Medical University; Xi'an 710021 China
- Bioinspired Engineering & Biomechanics Center (BEBC); Xi'an Jiaotong University; Xi'an 710049 China
| | - Wei Gao
- Department of Anesthesiology; the First Affiliated Hospital of Xi'an Jiaotong University Health Science Center; Xi'an 710061 China
| | - Xingye Cui
- Bioinspired Engineering & Biomechanics Center (BEBC); Xi'an Jiaotong University; Xi'an 710049 China
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology; Xi'an Jiaotong University; Xi'an 710049 China
| | - Lin Wang
- Bioinspired Engineering & Biomechanics Center (BEBC); Xi'an Jiaotong University; Xi'an 710049 China
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology; Xi'an Jiaotong University; Xi'an 710049 China
| | - Feng Xu
- Bioinspired Engineering & Biomechanics Center (BEBC); Xi'an Jiaotong University; Xi'an 710049 China
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology; Xi'an Jiaotong University; Xi'an 710049 China
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Tolaymat T, El Badawy A, Sequeira R, Genaidy A. A system-of-systems approach as a broad and integrated paradigm for sustainable engineered nanomaterials. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 511:595-607. [PMID: 25590540 DOI: 10.1016/j.scitotenv.2014.09.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 09/09/2014] [Accepted: 09/10/2014] [Indexed: 06/04/2023]
Abstract
There is an urgent need for a trans-disciplinary approach for the collective evaluation of engineered nanomaterial (ENM) benefits and risks. Currently, research studies are mostly focused on examining effects at individual endpoints with emphasis on ENM risk effects. Less research work is pursuing the integration needed to advance the science of sustainable ENMs. Therefore, the primary objective of this article is to discuss the system-of-systems (SoS) approach as a broad and integrated paradigm to examine ENM benefits and risks to society, environment, and economy (SEE) within a sustainability context. The aims are focused on: (a) current approaches in the scientific literature and the need for a broad and integrated approach, (b) documentation of ENM SoS in terms of architecture and governing rules and practices within sustainability context, and (c) implementation plan for the road ahead. In essence, the SoS architecture is a communication vehicle offering the opportunity to track benefits and risks in an integrated fashion so as to understand the implications and make decisions about advancing the science of sustainable ENMs. In support of the SoS architecture, we propose using an analytic-based decision support system consisting of a knowledge base and analytic engine along the benefit and risk informatics routes in the SEE system to build sound decisions on what constitutes sustainable and unsustainable ENMs in spite of the existing uncertainties and knowledge gaps. The work presented herein is neither a systematic review nor a critical appraisal of the scientific literature. Rather, it is a position paper that largely expresses the views of the authors based on their expert opinion drawn from industrial and academic experience.
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Affiliation(s)
- Thabet Tolaymat
- U.S. Environmental Protection Agency, Office of Research and Development, Cincinnati, OH, USA.
| | - Amro El Badawy
- Pegasus Technical Services Inc., Cincinnati, OH 45219, USA
| | - Reynold Sequeira
- University of Cincinnati, 2600 Clifton Ave., Cincinnati OH 45221, USA
| | - Ash Genaidy
- WorldTek Inc, 11884 Quarterhorse Ct, Cincinnati, OH 45249, USA
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Bates ME, Larkin S, Keisler JM, Linkov I. How decision analysis can further nanoinformatics. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:1594-600. [PMID: 26425410 PMCID: PMC4578443 DOI: 10.3762/bjnano.6.162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 07/09/2015] [Indexed: 05/14/2023]
Abstract
The increase in nanomaterial research has resulted in increased nanomaterial data. The next challenge is to meaningfully integrate and interpret these data for better and more efficient decisions. Due to the complex nature of nanomaterials, rapid changes in technology, and disunified testing and data publishing strategies, information regarding material properties is often illusive, uncertain, and/or of varying quality, which limits the ability of researchers and regulatory agencies to process and use the data. The vision of nanoinformatics is to address this problem by identifying the information necessary to support specific decisions (a top-down approach) and collecting and visualizing these relevant data (a bottom-up approach). Current nanoinformatics efforts, however, have yet to efficiently focus data acquisition efforts on the research most relevant for bridging specific nanomaterial data gaps. Collecting unnecessary data and visualizing irrelevant information are expensive activities that overwhelm decision makers. We propose that the decision analytic techniques of multicriteria decision analysis (MCDA), value of information (VOI), weight of evidence (WOE), and portfolio decision analysis (PDA) can bridge the gap from current data collection and visualization efforts to present information relevant to specific decision needs. Decision analytic and Bayesian models could be a natural extension of mechanistic and statistical models for nanoinformatics practitioners to master in solving complex nanotechnology challenges.
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Affiliation(s)
- Matthew E Bates
- Environmental Laboratory, U.S. Army Engineer Research and Development Center, Concord, MA, USA
| | - Sabrina Larkin
- Contractor to the Environmental Laboratory, U.S. Army Engineer Research and Development Center, Concord, MA, USA
| | - Jeffrey M Keisler
- Department of Management Science and Information Systems, College of Management, University of Massachusetts Boston, Boston, MA, USA
| | - Igor Linkov
- Environmental Laboratory, U.S. Army Engineer Research and Development Center, Concord, MA, USA
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35
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Huang KT, Wu CT, Huang KH, Lin WC, Chen CM, Guan SS, Chiang CK, Liu SH. Titanium nanoparticle inhalation induces renal fibrosis in mice via an oxidative stress upregulated transforming growth factor-β pathway. Chem Res Toxicol 2014; 28:354-64. [PMID: 25406100 DOI: 10.1021/tx500287f] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Titanium dioxide nanoparticles (Nano-TiO2) are gradually being used extensively in clinical settings, industry, and daily life. Accumulation studies showed that Nano-TiO2 exposure is able to cause injuries in various animal organs, including the lung, liver, spleen, and kidney. However, it remains unclear whether exposure of Nano-TiO2 by inhalation causes renal fibrosis. Here, we investigated the role of reactive oxygen species (ROS)/reactive nitrogen species (RNS) related signaling molecules in chronic renal damage after Nano-TiO2 inhalation in mice. Mice were treated with Nano-TiO2 (0.1, 0.25, and 0.5 mg/week) or microparticle-TiO2 (0.5 mg/week) by nonsurgical intratracheal instillation for 4 weeks. The results showed that Nano-TiO2 inhalation increased renal pathological changes in a dose-dependent manner. No renal pathological changes were observed in microparticle-TiO2-instilled mice. Nano-TiO2 (0.5 mg/week) possessed the ability to precipitate in the kidneys, determined by transmission electron microscopy and increased serum levels of blood urea nitrogen. The expressions of markers of ROS/RNS and renal fibrosis markers, including nitrotyrosine, inducible nitric oxide synthase, hypoxia inducible factor-1α (HIF-1α), heme oxygenase 1, transforming growth factor-β (TGFβ), and collagen I, determined by immunohistochemical staining were increased in the kidneys. Furthermore, Nano-TiO2-induced renal injury could be mitigated by iNOS inhibitor aminoguanidine and ROS scavenger N-acetylcysteine treatment in transcription level. The in vitro experiments showed that Nano-TiO2 significantly and dose-dependently increased the ROS production and the expressions of HIF-1α and TGFβ in human renal proximal tubular cells, which could be reversed by N-acetylcysteine treatment. Taken together, these results suggest Nano-TiO2 inhalation might induce renal fibrosis through a ROS/RNS-related HIF-1α-upregulated TGF-β signaling pathway.
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Affiliation(s)
- Kuo-Tong Huang
- Institute of Toxicology, College of Medicine, National Taiwan University , Taipei, Taiwan
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36
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Bouwmeester H, Brandhoff P, Marvin HJ, Weigel S, Peters RJ. State of the safety assessment and current use of nanomaterials in food and food production. Trends Food Sci Technol 2014. [DOI: 10.1016/j.tifs.2014.08.009] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Stone V, Pozzi-Mucelli S, Tran L, Aschberger K, Sabella S, Vogel U, Poland C, Balharry D, Fernandes T, Gottardo S, Hankin S, Hartl MGJ, Hartmann N, Hristozov D, Hund-Rinke K, Johnston H, Marcomini A, Panzer O, Roncato D, Saber AT, Wallin H, Scott-Fordsmand JJ. ITS-NANO--prioritising nanosafety research to develop a stakeholder driven intelligent testing strategy. Part Fibre Toxicol 2014; 11:9. [PMID: 24521051 PMCID: PMC3931673 DOI: 10.1186/1743-8977-11-9] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 01/15/2014] [Indexed: 02/17/2023] Open
Abstract
Background To assess the risk of all nanomaterials (NMs) on a case-by-case basis is challenging in terms of financial, ethical and time resources. Instead a more intelligent approach to knowledge gain and risk assessment is required. Methods A framework of future research priorities was developed from the accorded opinion of experts covering all major stake holder groups (government, industry, academia, funders and NGOs). It recognises and stresses the major topics of physicochemical characterisation, exposure identification, hazard identification and modelling approaches as key components of the current and future risk assessment of NMs. Results The framework for future research has been developed from the opinions of over 80 stakeholders, that describes the research priorities for effective development of an intelligent testing strategy (ITS) to allow risk evaluation of NMs. In this context, an ITS is a process that allows the risks of NMs to be assessed accurately, effectively and efficiently, thereby reducing the need to test NMs on a case-by-case basis. For each of the major topics of physicochemical characterisation, exposure identification, hazard identification and modelling, key-priority research areas are described via a series of stepping stones, or hexagon diagrams structured into a time perspective. Importantly, this framework is flexible, allowing individual stakeholders to identify where their own activities and expertise are positioned within the prioritisation pathway and furthermore to identify how they can effectively contribute and structure their work accordingly. In other words, the prioritisation hexagon diagrams provide a tool that individual stakeholders can adapt to meet their own particular needs and to deliver an ITS for NMs risk assessment. Such an approach would, over time, reduce the need for testing by increasing the reliability and sophistication of in silico approaches. The manuscript includes an appraisal of how this framework relates to the current risk assessment approaches and how future risk assessment could adapt to accommodate these new approaches. A full report is available in electronic format (pdf) at http://www.nano.hw.ac.uk/research-projects/itsnano.html. Conclusion ITS-NANO has delivered a detailed, stakeholder driven and flexible research prioritisation (or strategy) tool, which identifies specific research needs, suggests connections between areas, and frames this in a time-perspective.
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Affiliation(s)
- Vicki Stone
- Heriot Watt University, City of Edinburgh, UK.
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Boldrin A, Hansen SF, Baun A, Hartmann NIB, Astrup TF. Environmental exposure assessment framework for nanoparticles in solid waste. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 2014. [PMID: 24944519 DOI: 10.1007/s11051-013-2195-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Information related to the potential environmental exposure of engineered nanomaterials (ENMs) in the solid waste management phase is extremely scarce. In this paper, we define nanowaste as separately collected or collectable waste materials which are or contain ENMs, and we present a five-step framework for the systematic assessment of ENM exposure during nanowaste management. The framework includes deriving EOL nanoproducts and evaluating the physicochemical properties of the nanostructure, matrix properties and nanowaste treatment processes as well as transformation processes and environment releases, eventually leading to a final assessment of potential ENM exposure. The proposed framework was applied to three selected nanoproducts: nanosilver polyester textile, nanoTiO2 sunscreen lotion and carbon nanotube tennis racquets. We found that the potential global environmental exposure of ENMs associated with these three products was an estimated 0.5-143 Mg/year, which can also be characterised qualitatively as medium, medium, low, respectively. Specific challenges remain and should be subject to further research: (1) analytical techniques for the characterisation of nanowaste and its transformation during waste treatment processes, (2) mechanisms for the release of ENMs, (3) the quantification of nanowaste amounts at the regional scale, (4) a definition of acceptable limit values for exposure to ENMs from nanowaste and (5) the reporting of nanowaste generation data.
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Affiliation(s)
- Alessio Boldrin
- Department of Environmental Engineering, Technical University of Denmark, Miljoevej, 2800 Kongens Lyngby, Denmark
| | - Steffen Foss Hansen
- Department of Environmental Engineering, Technical University of Denmark, Miljoevej, 2800 Kongens Lyngby, Denmark
| | - Anders Baun
- Department of Environmental Engineering, Technical University of Denmark, Miljoevej, 2800 Kongens Lyngby, Denmark
| | | | - Thomas Fruergaard Astrup
- Department of Environmental Engineering, Technical University of Denmark, Miljoevej, 2800 Kongens Lyngby, Denmark
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Marquardt C, Kühnel D, Richter V, Krug HF, Mathes B, Steinbach C, Nau K. Latest research results on the effects of nanomaterials on humans and the environment: DaNa – Knowledge Base Nanomaterials. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/429/1/012060] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Lozano O, Mejia J, Piret JP, Saout C, Dogné JM, Toussaint O, Lucas S. How does the deposited dose of oxide nanomaterials evolve in anin vitroassay? ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/429/1/012013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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