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Esposito MC, Russo GL, Riva L, Punta C, Corsi I, Tosti E, Gallo A. Nanostructured cellulose sponge engineered for marine environmental remediation: Eco-safety assessment of its leachate on sea urchin reproduction (Part A). Environ Pollut 2023; 334:122169. [PMID: 37437755 DOI: 10.1016/j.envpol.2023.122169] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 07/06/2023] [Accepted: 07/08/2023] [Indexed: 07/14/2023]
Abstract
Nanostructured cellulose sponges (CNS) have been developed as eco-friendly and sustainable engineered materials for marine environmental remediation. Despite their functionality, sensitivity, efficiency and specificity have been proved, CNS application is still limited since their environmental safety (eco-safety) has not been completely assessed. In this study, CNS were allowed to leach in natural seawater simulating the remediation process condition and the eco-safety of CNS leachate on sea urchin reproduction has been assessed by carrying out a multi-response integrated approach, combining standardized ecotoxicity tests, innovative bioassays and gamete quality assessment. Overall, the ecotoxicity data indicate that CNS leachate affects gamete quality, gamete fertilisation competence, and embryo development probably associated with the release of chemical additives used during the synthesis process. However, in the framework of the eco-design approach, consecutive leaching treatments and conditioning of CNS in seawater open the route for a new safety protocol successfully solving the ecotoxicity while maintaining CNS sorbent properties. A safe environmental application of the resulting conditioned CNS for seawater pollution remediation is envisaged.
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Affiliation(s)
- Maria Consiglia Esposito
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121, Naples, Italy
| | - Gian Luigi Russo
- Institute of Food Sciences, National Research Council, via Roma 64, 83100, Avellino, Italy
| | - Laura Riva
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano and INSTM Local Unit, via Mancinelli 7, 20131, Milano, Italy
| | - Carlo Punta
- Department of Chemistry, Materials, and Chemical Engineering "G. Natta", Politecnico di Milano and INSTM Local Unit, via Mancinelli 7, 20131, Milano, Italy
| | - Ilaria Corsi
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli 4, 53100, Siena, Italy
| | - Elisabetta Tosti
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121, Naples, Italy
| | - Alessandra Gallo
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121, Naples, Italy.
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2
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Belosi F, Koivisto AJ, Furxhi I, de Ipiña JL, Nicosia A, Ravegnani F, Ortelli S, Zanoni I, Costa A. Critical aspects in occupational exposure assessment with different aerosol metrics in an industrial spray coating process. NanoImpact 2023; 30:100459. [PMID: 36948454 DOI: 10.1016/j.impact.2023.100459] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 06/03/2023]
Abstract
Engineered Nanomaterials (ENMs) have several uses in various industrial fields and are embedded in a myriad of consumer products. However, there is continued concern over the potential adverse health effects and environmental impacts of ENMs due to their unique physico-chemical characteristics. Currently, there are no specific international regulations for various ENMs. There are also no Occupational Exposure Limits (OEL) regulated by the European Union (EU) for nanomaterials in the form of nano-objects, their aggregates or agglomerates (NOAA). For ENMs the question of which metric to be used (i.e., mass, surface area, number concentrations) to determine the exposure is still not resolved. The aim of this work is to assess the worker exposure by inhalation in an industrial spray coating process by using all three metrics mentioned above. Two target ENMs (N-doped TiO2, TiO2N and AgNPs capped with a quaternized hydroxyethyl-cellulose, AgHEC) generated for industrial-scale spraying processes were considered. Results showed that the averaged particle number concentration (10-100 nm) was below 2.7 104 cm-3 for both materials. The Lung Deposited Surface Area (LDSA) was in the range between 73 and 98 μm2cm-3 and the particle mass concentration (obtained by means of ICP-EOS off-line analysis) resulted below 70 μg m-3 and 0.4 μg m-3 for TiO2 and Ag, respectively. Although, the airborne particles concentration compared well with the NIOSH Recommended Exposure Level (REL) limits the contribution to the background, according to EN 17058 (Annex E) was significant (particularly in the particle number and PM1 mass concentrations). We successfully evaluated the worker exposure by means of the different airborne particles' metrics (number, surface and mass concentrations). We concluded that worker exposure assessment involving ENMs is a complex procedure with requires both real time and off-line measurements and a deep investigation of the background.
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Affiliation(s)
- Franco Belosi
- CNR-ISAC, National Research Council of Italy, Institute of Atmospheric Sciences and Climate, Via Gobetti 101, 40129 Bologna, Italy
| | - Antti Joonas Koivisto
- Air Pollution Management APM, Mattilanmäki 38, 33610 Tampere, Finland; Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, PL 64, FI-00014 UHEL, Helsinki, Finland; ARCHE Consulting, Liefkensstraat 35D, Wondelgem B-9032, Belgium
| | - Irini Furxhi
- Transgero Limited, Cullinagh, Newcastle West, Co. Limerick, Limerick, Ireland; Department of Accounting and Finance, Kemmy Business School, University of Limerick, Limerick V94 T9PX, Ireland
| | - Jesús Lopez de Ipiña
- TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Alava, Leonardo Da Vinci 11, 01510 Miñano, Spain
| | - Alessia Nicosia
- CNR-ISAC, National Research Council of Italy, Institute of Atmospheric Sciences and Climate, Via Gobetti 101, 40129 Bologna, Italy
| | - Fabrizio Ravegnani
- CNR-ISAC, National Research Council of Italy, Institute of Atmospheric Sciences and Climate, Via Gobetti 101, 40129 Bologna, Italy
| | - Simona Ortelli
- CNR-ISSMC (former ISTEC), National Research Council of Italy, Institute of Science, Technology and Sustainability for Ceramics, Via Granarolo 64, 48018 Faenza, Italy.
| | - Ilaria Zanoni
- CNR-ISSMC (former ISTEC), National Research Council of Italy, Institute of Science, Technology and Sustainability for Ceramics, Via Granarolo 64, 48018 Faenza, Italy
| | - Anna Costa
- CNR-ISSMC (former ISTEC), National Research Council of Italy, Institute of Science, Technology and Sustainability for Ceramics, Via Granarolo 64, 48018 Faenza, Italy
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3
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Yin W, Liu M, Wang YH, Huang Y, Zhao TL, Yao QZ, Fu SQ, Zhou GT. Fe 3O 4-Mg(OH) 2 nanocomposite as a scavenger for silver nanoparticles: Rational design, facile synthesis, and enhanced performance. Environ Res 2022; 212:113292. [PMID: 35427596 DOI: 10.1016/j.envres.2022.113292] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/28/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Silver nanoparticles (AgNPs) are considered as emerging contaminants because of their high toxicity and increasing environmental impact. Removal of discharged AgNPs from water is crucial for mitigating the health and environmental risks. However, developing facile, economical, and environment-friendly approaches remains challenging. Herein, an Fe3O4-Mg(OH)2 nanocomposite, as a novel magnetic scavenger for AgNPs, was prepared by loading Fe3O4 nanoparticles on Mg(OH)2 nanoplates in a one-pot synthesis. Batch removal experiments revealed that the maximum removal capacities for the two model AgNPs (citrate- or polyvinylpyrrolidone-coated AgNPs) were 476 and 442 mg/g, respectively, corresponding to partition coefficients 8.03 and 4.89 mg/g/μM. Removal feasibilities over a wide pH range of 5-11 and in real water matrices and scavenger reusability with five cycles were also confirmed. Both Fe3O4 and Mg(OH)2 components contributed to the removal; however, their nanocomposites exhibited an enhanced performance because of the high specific surface area and pore volume. Chemical adsorption and electrostatic attraction between the coatings on the AgNPs and the two components in the nanocomposite was considered to be responsible for the removal. Overall, the facile synthesis, convenient magnetic separation, and high removal performance highlight the great potential of the Fe3O4-Mg(OH)2 nanocomposite for practical applications.
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Affiliation(s)
- Wei Yin
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
| | - Meng Liu
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
| | - Yu-Han Wang
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
| | - Yang Huang
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
| | - Tian-Lei Zhao
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
| | - Qi-Zhi Yao
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, China.
| | - Sheng-Quan Fu
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Gen-Tao Zhou
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China; CAS Center for Excellence in Comparative Planetology, Hefei, 230026, China.
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4
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MacCormack TJ, Meli MV, Ede JD, Ong KJ, Rourke JL, Dieni CA. Commentary: Revisiting nanoparticle-assay interference: There's plenty of room at the bottom for misinterpretation. Comp Biochem Physiol B Biochem Mol Biol 2021; 255:110601. [PMID: 33857590 DOI: 10.1016/j.cbpb.2021.110601] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 12/15/2022]
Abstract
Engineered nanomaterials (ENMs) are a diverse class of materials whose distinct properties make them desirable in a multitude of applications. The proliferation of nanotoxicology research has improved our understanding of ENM toxicity, but an under appreciation for their potential to interfere with biochemical assays has hampered progress in the field. The physicochemical properties of ENMs can promote their interaction with membranes or biomacromolecules (e.g. proteins, genomic material). This can influence the activity of enzymes used as biomarkers or as reagents in biochemical assay protocols, bind indicator dyes in cytotoxicity tests, and/or interfere with the cellular mechanisms controlling the uptake of such dyes. The spectral characteristics of some ENMs can cause interference with common assay chromophores, fluorophores, and radioisotope scintillation cocktails. Finally, the inherent chemical reactivity of some ENMs can short circuit assay mechanisms by directly oxidizing or reducing indicator dyes. These processes affect data quality and may lead to significant misinterpretations regarding ENM safety. We provide an overview of some ENM properties that facilitate assay interference, examples of interference and the erroneous conclusions that may result from it, and a number of general and specific recommendations for validating cellular and biochemical assay protocols in nanotoxicology studies.
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Affiliation(s)
- T J MacCormack
- Department of Chemistry and Biochemistry, Mount Allison University, 63C York St., Sackville, NB E4L1E4, Canada.
| | - M-V Meli
- Department of Chemistry and Biochemistry, Mount Allison University, 63C York St., Sackville, NB E4L1E4, Canada
| | - J D Ede
- Vireo Advisors, LLC, Boston, MA 02130-4323, USA
| | - K J Ong
- Vireo Advisors, LLC, Boston, MA 02130-4323, USA
| | - J L Rourke
- Department of Chemistry and Biochemistry, Mount Allison University, 63C York St., Sackville, NB E4L1E4, Canada
| | - C A Dieni
- Department of Physical and Environmental Sciences, Colorado Mesa University, 1100 North Ave., Grand Junction, CO 81501, USA
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5
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Ilves M, Kinaret PAS, Ndika J, Karisola P, Marwah V, Fortino V, Fedutik Y, Correia M, Ehrlich N, Loeschner K, Besinis A, Vassallo J, Handy RD, Wolff H, Savolainen K, Greco D, Alenius H. Surface PEGylation suppresses pulmonary effects of CuO in allergen-induced lung inflammation. Part Fibre Toxicol 2019; 16:28. [PMID: 31277695 PMCID: PMC6612204 DOI: 10.1186/s12989-019-0309-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 06/04/2019] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Copper oxide (CuO) nanomaterials are used in a wide range of industrial and commercial applications. These materials can be hazardous, especially if they are inhaled. As a result, the pulmonary effects of CuO nanomaterials have been studied in healthy subjects but limited knowledge exists today about their effects on lungs with allergic airway inflammation (AAI). The objective of this study was to investigate how pristine CuO modulates allergic lung inflammation and whether surface modifications can influence its reactivity. CuO and its carboxylated (CuO COOH), methylaminated (CuO NH3) and PEGylated (CuO PEG) derivatives were administered here on four consecutive days via oropharyngeal aspiration in a mouse model of AAI. Standard genome-wide gene expression profiling as well as conventional histopathological and immunological methods were used to investigate the modulatory effects of the nanomaterials on both healthy and compromised immune system. RESULTS Our data demonstrates that although CuO materials did not considerably influence hallmarks of allergic airway inflammation, the materials exacerbated the existing lung inflammation by eliciting dramatic pulmonary neutrophilia. Transcriptomic analysis showed that CuO, CuO COOH and CuO NH3 commonly enriched neutrophil-related biological processes, especially in healthy mice. In sharp contrast, CuO PEG had a significantly lower potential in triggering changes in lungs of healthy and allergic mice revealing that surface PEGylation suppresses the effects triggered by the pristine material. CONCLUSIONS CuO as well as its functionalized forms worsen allergic airway inflammation by causing neutrophilia in the lungs, however, our results also show that surface PEGylation can be a promising approach for inhibiting the effects of pristine CuO. Our study provides information for health and safety assessment of modified CuO materials, and it can be useful in the development of nanomedical applications.
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Affiliation(s)
- Marit Ilves
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, 00290, Helsinki, Finland
| | - Pia Anneli Sofia Kinaret
- Institute of Biotechnology, University of Helsinki, 00790, Helsinki, Finland.,Faculty of Medicine and Life Sciences, University of Tampere, 33100, Tampere, Finland
| | - Joseph Ndika
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, 00290, Helsinki, Finland
| | - Piia Karisola
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, 00290, Helsinki, Finland
| | - Veer Marwah
- Institute of Biotechnology, University of Helsinki, 00790, Helsinki, Finland.,Faculty of Medicine and Life Sciences, University of Tampere, 33100, Tampere, Finland
| | - Vittorio Fortino
- Institute of Biotechnology, University of Helsinki, 00790, Helsinki, Finland.,Biomedicine Institute, University of Eastern Finland, 70211, Kuopio, Finland
| | | | - Manuel Correia
- National Food Institute, Technical University of Denmark, 2800, Lyngby, Denmark
| | - Nicky Ehrlich
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800, Lyngby, Denmark
| | - Katrin Loeschner
- National Food Institute, Technical University of Denmark, 2800, Lyngby, Denmark
| | - Alexandros Besinis
- School of Biological and Marine Sciences, Faculty of Science and Engineering, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK.,Plymouth University Peninsula Schools of Medicine and Dentistry, University of Plymouth, John Bull Building, Tamar Science Park, Plymouth, PL6 8BU, UK
| | - Joanne Vassallo
- School of Biological and Marine Sciences, Faculty of Science and Engineering, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK
| | - Richard D Handy
- School of Biological and Marine Sciences, Faculty of Science and Engineering, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK
| | - Henrik Wolff
- Finnish Institute of Occupational Health, 00250, Helsinki, Finland.,Department of Pathology, University of Helsinki, 00014, Helsinki, Finland
| | - Kai Savolainen
- Finnish Institute of Occupational Health, 00250, Helsinki, Finland
| | - Dario Greco
- Institute of Biotechnology, University of Helsinki, 00790, Helsinki, Finland.,Faculty of Medicine and Life Sciences, University of Tampere, 33100, Tampere, Finland
| | - Harri Alenius
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, 00290, Helsinki, Finland. .,Institute of Environmental Medicine, Karolinska Institutet, 171 77, Stockholm, Sweden.
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6
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D'Errico JN, Doherty C, Fournier SB, Renkel N, Kallontzi S, Goedken M, Fabris L, Buckley B, Stapleton PA. Identification and quantification of gold engineered nanomaterials and impaired fluid transfer across the rat placenta via ex vivo perfusion. Biomed Pharmacother 2019; 117:109148. [PMID: 31347503 DOI: 10.1016/j.biopha.2019.109148] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 06/14/2019] [Accepted: 06/17/2019] [Indexed: 02/07/2023] Open
Abstract
Development and implementation of products incorporating nanoparticles are occurring at a rapid pace. These particles are widely utilized in domestic, occupational, and biomedical applications. Currently, it is unclear if pregnant women will be able to take advantage of the potential biomedical nanoproducts out of concerns associated with placental transfer and fetal interactions. We recently developed an ex vivo rat placental perfusion technique to allow for the evaluation of xenobiotic transfer and placental physiological perturbations. In this study, a segment of the uterine horn and associated placenta was isolated from pregnant (gestational day 20) Sprague-Dawley rats and placed into a modified pressure myography vessel chamber. The proximal and distal ends of the maternal uterine artery and the vessels of the umbilical cord were cannulated, secured, and perfused with physiological salt solution (PSS). The proximal uterine artery and umbilical artery were pressurized at 80 mmHg and 50 mmHg, respectively, to allow countercurrent flow through the placenta. After equilibration, a single 900 μL bolus dose of 20 nm gold engineered nanoparticles (Au-ENM) was introduced into the proximal maternal artery. Distal uterine and umbilical vein effluents were collected every 10 min for 180 min to measure placental fluid dynamics. The quantification of Au-ENM transfer was conducted via inductively coupled plasma mass spectrometry (ICP-MS). Overall, we were able to measure Au-ENM within uterine and umbilical effluent with 20 min of material infusion. This novel methodology may be widely incorporated into studies of pharmacology, toxicology, and placental physiology.
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Affiliation(s)
- J N D'Errico
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, 160 Frelinghuysen Rd., Piscataway, NJ 08854, USA
| | - C Doherty
- Environmental and Occupational Health Sciences Institute, 170 Frelinghuysen Rd., Piscataway, NJ 08854, USA
| | - S B Fournier
- Environmental and Occupational Health Sciences Institute, 170 Frelinghuysen Rd., Piscataway, NJ 08854, USA
| | - N Renkel
- Environmental and Occupational Health Sciences Institute, 170 Frelinghuysen Rd., Piscataway, NJ 08854, USA
| | - S Kallontzi
- Department of Material Science and Engineering, School of Engineering, Rutgers University, 607 Taylor Rd., Piscataway, NJ 08854, USA
| | - M Goedken
- Research Pathology Services, Rutgers University, Piscataway, NJ 08854, USA
| | - L Fabris
- Department of Material Science and Engineering, School of Engineering, Rutgers University, 607 Taylor Rd., Piscataway, NJ 08854, USA
| | - B Buckley
- Environmental and Occupational Health Sciences Institute, 170 Frelinghuysen Rd., Piscataway, NJ 08854, USA
| | - P A Stapleton
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, 160 Frelinghuysen Rd., Piscataway, NJ 08854, USA; Environmental and Occupational Health Sciences Institute, 170 Frelinghuysen Rd., Piscataway, NJ 08854, USA.
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7
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Wang Y, Kalinina A, Sun T, Nowack B. Probabilistic modeling of the flows and environmental risks of nano-silica. Sci Total Environ 2016; 545-546:67-76. [PMID: 26745294 DOI: 10.1016/j.scitotenv.2015.12.100] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 12/21/2015] [Accepted: 12/21/2015] [Indexed: 06/05/2023]
Abstract
Nano-silica, the engineered nanomaterial with one of the largest production volumes, has a wide range of applications in consumer products and industry. This study aimed to quantify the exposure of nano-silica to the environment and to assess its risk to surface waters. Concentrations were calculated for four environmental (air, soil, surface water, sediments) and two technical compartments (wastewater, solid waste) for the EU and Switzerland using probabilistic material flow modeling. The corresponding median concentration in surface water is predicted to be 0.12 μg/l in the EU (0.053-3.3 μg/l, 15/85% quantiles). The concentrations in sediments in the complete sedimentation scenario were found to be the largest among all environmental compartments, with a median annual increase of 0.43 mg/kg · y in the EU (0.19-12 mg/kg · y, 15/85% quantiles). Moreover, probabilistic species sensitivity distributions (PSSD) were computed and the risk of nano-silica in surface waters was quantified by comparing the predicted environmental concentration (PEC) with the predicted no-effect concentration (PNEC) distribution, which was derived from the cumulative PSSD. This assessment suggests that nano-silica currently poses no risk to aquatic organisms in surface waters. Further investigations are needed to assess the risk of nano-silica in other environmental compartments, which is currently not possible due to a lack of ecotoxicological data.
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Affiliation(s)
- Yan Wang
- Empa, Swiss Federal Laboratories for Materials Science and Technology, CH-9014 St. Gallen, Switzerland
| | - Anna Kalinina
- Empa, Swiss Federal Laboratories for Materials Science and Technology, CH-9014 St. Gallen, Switzerland
| | - Tianyin Sun
- Empa, Swiss Federal Laboratories for Materials Science and Technology, CH-9014 St. Gallen, Switzerland
| | - Bernd Nowack
- Empa, Swiss Federal Laboratories for Materials Science and Technology, CH-9014 St. Gallen, Switzerland.
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8
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Ma W, Jing L, Valladares A, Mehta SL, Wang Z, Li PA, Bang JJ. Silver nanoparticle exposure induced mitochondrial stress, caspase-3 activation and cell death: amelioration by sodium selenite. Int J Biol Sci 2015; 11:860-7. [PMID: 26157341 PMCID: PMC4495404 DOI: 10.7150/ijbs.12059] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 04/20/2015] [Indexed: 12/28/2022] Open
Abstract
Silver nanoparticles (AgNP), one of the most commonly used engineered nanomaterial for biomedical and industrial applications, has shown a toxic potential to our ecosystems and humans. In this study, murine hippocampal neuronal HT22 cells were used to delineate subcellular responses and mechanisms to AgNP by assessing the response levels of caspase-3, mitochondrial oxygen consumption, reactive oxygen species (ROS), and mitochondrial membrane potential in addition to cell viability testing. Selenium, an essential trace element that has been known to carry protecting property from heavy metals, was tested for its ameliorating potential in the cells exposed to AgNP. Results showed that AgNP reduced cell viability. The toxicity was associated with mitochondrial membrane depolarization, increased accumulation of ROS, elevated mitochondrial oxygen consumption, and caspase-3 activation. Treatment with sodium selenite reduced cell death, stabilized mitochondrial membrane potential and oxygen consumption rate, and prevented accumulation of ROS and activation of caspase-3. It is concluded that AgNP induces mitochondrial stress and treatment with selenite is capable of preventing the adverse effects of AgNP on the mitochondria.
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Affiliation(s)
- Wanrui Ma
- 1. Department of Comprehensive Medicine, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, P.R. China ; 4. Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technological Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, USA
| | - Li Jing
- 2. Department of Pathology, College of Basic Sciences, Ningxia Medical University, Yinchuan, Ningxia, P.R. China ; 4. Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technological Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, USA
| | - Alexandra Valladares
- 3. Department of Environmental, Earth and Geospatial Sciences, North Carolina Central University, Durham, North Carolina, USA
| | - Suresh L Mehta
- 4. Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technological Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, USA. ; 5. Department of Neurological Surgery, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53792, USA
| | - Zhizhong Wang
- 6. Department of Epidemiology and Biostatistics, School of Public Health, Ningxia Medical University, Yinchuan, China
| | - P Andy Li
- 4. Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technological Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, USA
| | - John J Bang
- 3. Department of Environmental, Earth and Geospatial Sciences, North Carolina Central University, Durham, North Carolina, USA. ; 4. Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technological Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, USA
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9
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Lee V, McMahan RS, Hu X, Gao X, Faustman EM, Griffith WC, Kavanagh TJ, Eaton DL, McGuire JK, Parks WC. Amphiphilic polymer-coated CdSe/ZnS quantum dots induce pro-inflammatory cytokine expression in mouse lung epithelial cells and macrophages. Nanotoxicology 2014; 9:336-43. [PMID: 24983898 DOI: 10.3109/17435390.2014.930532] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Quantum dots (Qdots) are semiconductor nanoparticles with size-tunable fluorescence capabilities with diverse applications. Qdots typically contain cadmium or other heavy metals, hence raising concerns of their potential toxicity, especially in occupational settings where inhalation of nanomaterials may increase the risk of lung disease. Accordingly, we assessed the effects of tri-n-octylphosphine oxide, poly(maleic anhydride-alt-1-tetradecene) (TOPO-PMAT) coated CdSe/ZnS Qdots on mouse lung epithelial cells and macrophages. Mouse tracheal epithelial cells (MTEC), grown as organotypic cultures, bone marrow-derived macrophages (BMDM), and primary alveolar macrophages (AM) were derived from C57BL/6J or A/J mice and treated with TOPO-PMAT CdSe/ZnS Qdots (10-160 nM) for up to 24 h. Cadmium analysis showed that Qdots remained in the apical compartment of MTEC cultures, whereas they were avidly internalized by AM and BMDM, which did not differ between strains. In MTEC, Qdots selectively induced expression (mRNA and protein) of neutrophil chemokines CXCL1 and CXCL2 but only low to no detectable levels of other factors assessed. In contrast, 4 h exposure to Qdots markedly increased expression of CXCL1, IL6, IL12, and other pro-inflammatory factors in BMDM. Higher inflammatory response was seen in C57BL/6J than in A/J BMDM. Similar expression responses were observed in AM, although overall levels were less robust than in BMDM. MTEC from A/J mice were more sensitive to Qdot pro-inflammatory effects while macrophages from C57BL/6J mice were more sensitive. These findings suggest that patterns of Qdot-induced pulmonary inflammation are likely to be cell-type specific and genetic background dependent.
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Affiliation(s)
- Vivian Lee
- Center for Lung Biology, University of Washington , Seattle, WA , United States
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Kühnel D, Nickel C. The OECD expert meeting on ecotoxicology and environmental fate--towards the development of improved OECD guidelines for the testing of nanomaterials. Sci Total Environ 2014; 472:347-53. [PMID: 24461369 DOI: 10.1016/j.scitotenv.2013.11.055] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/11/2013] [Accepted: 11/11/2013] [Indexed: 05/09/2023]
Abstract
On behalf of the OECD Working Party on Manufactured Nanomaterials (WPMN) an expert meeting on ecotoxicology and environmental fate of nanomaterials (NMs) took place in January 2013 in Berlin. At this meeting experts from science, industry and regulatory bodies discussed the applicability of OECD test guidelines (TGs) for chemicals to nanomaterials. The objective was to discuss the current state of the relevant science and provide recommendations to the OECD WPMN on (1) the need for updating current OECD TGs and the need for developing new ones specific to nanomaterials; and (2) guidance needed for the appropriate and valid testing of environmental fate and ecotoxicity endpoints for NMs. Experts at the workshop agreed that the majority of the OECD TG for chemicals were generally applicable for the testing of NM, with the exception of TG 105 (water solubility) and 106 (adsorption-desorption). Additionally, the workshop also highlighted considerations when conducting OECD chemical TG on nanomaterials (e.g., sample preparation, dispersion, analysis, dosimetry and characterisation). These considerations will lead to the future development of proposals for new TG and guidance documents (GDs) to ensure that OECD TG give meaningful, repeatable, and accurate results when used for nanomaterials. This report provides a short overview of topics discussed during the meeting and the main outcomes. A more detailed report of the workshop will become available through the OECD, however, due to the urgency of having OECD TG relevant for nanomaterials, this brief report is being shared with the scientific community through this communication.
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Affiliation(s)
- Dana Kühnel
- Helmholtz-Centre for Environmental Research - UFZ, Permoser Str. 15, 04318 Leipzig, Germany.
| | - Carmen Nickel
- IUTA e.V., Air Quality & Sustainable Nanotechnology, Bliersheimer Str. 60, 47229 Duisburg, Germany.
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Gordon SC, Butala JH, Carter JM, Elder A, Gordon T, Gray G, Sayre PG, Schulte PA, Tsai CS, West J. Workshop report: strategies for setting occupational exposure limits for engineered nanomaterials. Regul Toxicol Pharmacol 2014; 68:305-11. [PMID: 24462629 DOI: 10.1016/j.yrtph.2014.01.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 01/13/2014] [Accepted: 01/13/2014] [Indexed: 11/29/2022]
Abstract
Occupational exposure limits (OELs) are important tools for managing worker exposures to chemicals; however, hazard data for many engineered nanomaterials (ENMs) are insufficient for deriving OELs by traditional methods. Technical challenges and questions about how best to measure worker exposures to ENMs also pose barriers to implementing OELs. New varieties of ENMs are being developed and introduced into commerce at a rapid pace, further compounding the issue of OEL development for ENMs. A Workshop on Strategies for Setting Occupational Exposure Limits for Engineered Nanomaterials, held in September 2012, provided an opportunity for occupational health experts from various stakeholder groups to discuss possible alternative approaches for setting OELs for ENMs and issues related to their implementation. This report summarizes the workshop proceedings and findings, identifies areas for additional research, and suggests potential avenues for further progress on this important topic.
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Affiliation(s)
- Steven C Gordon
- 3M Company, Toxicology Assessment and Compliance Assurance, 3M Center, Bldg. 220-6E-03, Saint Paul, MN 55144, USA.
| | - John H Butala
- Toxicology Consultants, Inc., 7 Glasgow Road, Gibsonia, PA 15044, USA.
| | - Janet M Carter
- U.S. Department of Labor, Occupational Safety & Health Administration, 200 Constitution Avenue, Washington, DC 20210, USA.
| | - Alison Elder
- University of Rochester, School of Medicine and Dentistry, Dept. of Environmental Medicine, 601 Elmwood Ave, Box EHSC, Rochester, NY 14642, USA.
| | - Terry Gordon
- New York University School of Medicine, Department of Environmental Medicine, 57 Old Forge Road, Tuxedo Park, NY 10987, USA.
| | - George Gray
- George Washington University, School of Public Health and Health Services, Dept. of Environmental and Occupational Health and Center for Risk Science and Public Health, 2100 M Street NW, Suite 203A, Washington, DC 20037, USA.
| | - Philip G Sayre
- U.S. Environmental Protection Agency (Mail Code 7403), 1200 Pennsylvania Avenue NW, Washington, DC 20460, USA.
| | - Paul A Schulte
- National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, 4676 Columbia Parkway, Cincinnati, OH 45226, USA.
| | - Candace S Tsai
- Purdue University, School of Health Sciences, Delon and Elizabeth Hampton Hall of Civil Engineering, 550 Stadium Mall Drive, West Lafayette, IN 47907, USA.
| | - Jay West
- American Chemistry Council, Nanotechnology Panel, 700 2nd Street NE, Washington, DC 20002, USA.
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