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Bour A, Mouchet F, Cadarsi S, Silvestre J, Verneuil L, Baqué D, Chauvet E, Bonzom JM, Pagnout C, Clivot H, Fourquaux I, Tella M, Auffan M, Gauthier L, Pinelli E. Toxicity of CeO₂ nanoparticles on a freshwater experimental trophic chain: A study in environmentally relevant conditions through the use of mesocosms. Nanotoxicology 2015; 10:245-55. [PMID: 26152687 DOI: 10.3109/17435390.2015.1053422] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The toxicity of CeO2 NPs on an experimental freshwater ecosystem was studied in mesocosm, with a focus being placed on the higher trophic level, i.e. the carnivorous amphibian species Pleurodeles waltl. The system comprised species at three trophic levels: (i) bacteria, fungi and diatoms, (ii) Chironomus riparius larvae as primary consumers and (iii) Pleurodeles larvae as secondary consumers. NP contamination consisted of repeated additions of CeO2 NPs over 4 weeks, to obtain a final concentration of 1 mg/L. NPs were found to settle and accumulate in the sediment. No effects were observed on litter decomposition or associated fungal biomass. Changes in bacterial communities were observed from the third week of NP contamination. Morphological changes in CeO2 NPs were observed at the end of the experiment. No toxicity was recorded in chironomids, despite substantial NP accumulation (265.8 ± 14.1 mg Ce/kg). Mortality (35.3 ± 6.8%) and a mean Ce concentration of 13.5 ± 3.9 mg/kg were reported for Pleurodeles. Parallel experiments were performed on Pleurodeles to determine toxicity pathways: no toxicity was observed by direct or dietary exposures, although Ce concentrations almost reached 100 mg/kg. In view of these results, various toxicity mechanisms are proposed and discussed. The toxicity observed on Pleurodeles in mesocosm may be indirect, due to microorganism's interaction with CeO2 NPs, or NP dissolution could have occurred in mesocosm due to the structural complexity of the biological environment, resulting in toxicity to Pleurodeles. This study strongly supports the importance of ecotoxicological assessment of NPs under environmentally relevant conditions, using complex biological systems.
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Affiliation(s)
- Agathe Bour
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Florence Mouchet
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Stéphanie Cadarsi
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Jérôme Silvestre
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Laurent Verneuil
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - David Baqué
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France
| | - Eric Chauvet
- c CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , Toulouse , France
| | - Jean-Marc Bonzom
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,d Laboratoire de Radioécologie et d'Ecotoxicologie , IRSN (Institut de Radioprotection et de Sûreté Nucléaire), DEI/SECRE , Cadarache , France
| | - Christophe Pagnout
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,e CNRS, Université de Lorraine, LIEC (Laboratoire Interdisciplinaire des Environnements Continentaux) UMR 7360, Metz, France
| | - Hugues Clivot
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,e CNRS, Université de Lorraine, LIEC (Laboratoire Interdisciplinaire des Environnements Continentaux) UMR 7360, Metz, France
| | - Isabelle Fourquaux
- f CMEAB (Centre de Microscopie Electronique Appliqué à la Biologie), Université Paul Sabatier, Faculté de Médecine Rangueil , Toulouse , France , and
| | - Marie Tella
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,g CNRS, Université d'Aix-Marseille, CEREGE UMR 7330 , Aix-en-Provence , France
| | - Mélanie Auffan
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,g CNRS, Université d'Aix-Marseille, CEREGE UMR 7330 , Aix-en-Provence , France
| | - Laury Gauthier
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Eric Pinelli
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
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152
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Gene expression changes in plants and microorganisms exposed to nanomaterials. Curr Opin Biotechnol 2015; 33:206-19. [DOI: 10.1016/j.copbio.2015.03.005] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 02/15/2015] [Accepted: 03/06/2015] [Indexed: 12/15/2022]
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153
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Selvaraj V, Manne NDPK, Arvapalli R, Rice KM, Nandyala G, Fankenhanel E, Blough ER. Effect of cerium oxide nanoparticles on sepsis induced mortality and NF-κB signaling in cultured macrophages. Nanomedicine (Lond) 2015; 10:1275-88. [DOI: 10.2217/nnm.14.205] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Aim: To investigate whether cerium oxide (CeO2) nanoparticles could be used for the treatment of severe sepsis. Materials & methods: Cecal peritonitis was induced in male Sprague–Dawley rats in the presence and absence of CeO2 nanoparticles. Cultured macrophages (RAW264.7 cells) were challenged with lipopolysaccharide in the absence and presence of CeO2 nanoparticles. The effect of nanoparticles on the growth of Escherichia coli and Staphylococcus aureus was determined in culture. Results: Nanoparticle treatment decreased sepsis-induced mortality, organ damage, serum IL-6, blood urea nitrogen and inflammatory markers. Nanoparticle treatment diminished lipopolysaccharide-induced cytokine release and p65-nuclear factor-KB (NF-KB) activation in cultured RAW264.7 cells. Exposure to CeO2 nanoparticles inhibited E. coli growth. Conclusion: The findings of this study indicate that CeO2 nanoparticles may be useful for the treatment of sepsis.
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Affiliation(s)
| | - Nandini DPK Manne
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV, USA
- Department of Pharmacology, Physiology & Toxicology, Joan C Edwards School of Medicine, Marshall University, Huntington, WV, USA
| | | | - Kevin M Rice
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV, USA
| | - Geeta Nandyala
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV, USA
| | - Erin Fankenhanel
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV, USA
| | - Eric R Blough
- Center for Diagnostic Nanosystems, Marshall University, Huntington, WV, USA
- Department of Pharmacology, Physiology & Toxicology, Joan C Edwards School of Medicine, Marshall University, Huntington, WV, USA
- Department of Cardiology, Joan C Edwards School of Medicine, Marshall University, Huntington, WV, USA
- Department of Pharmaceutical Sciences and Research, School of Pharmacy, Marshall University, Huntington, WV, USA
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154
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Taylor NS, Merrifield R, Williams TD, Chipman JK, Lead JR, Viant MR. Molecular toxicity of cerium oxide nanoparticles to the freshwater alga Chlamydomonas reinhardtii is associated with supra-environmental exposure concentrations. Nanotoxicology 2015; 10:32-41. [PMID: 25740379 PMCID: PMC4819577 DOI: 10.3109/17435390.2014.1002868] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Ceria nanoparticles (NPs) are widely used as fuel catalysts and consequently are likely to enter the environment. Their potential impacts on. biota at environmentally relevant concentrations, including uptake and toxicity, remain to be elucidated and quantitative data on which to assess risk are sparse. Therefore, a definitive assessment of the molecular and phenotypic effects of ceria NPs was undertaken, using well-characterised mono-dispersed NPs as their toxicity is likely to be higher, enabling a conservative hazard assessment. Unbiased transcriptomics and metabolomics approaches were used to investigate the potential toxicity of tightly constrained 4–5 nm ceria NPs to the unicellular green alga, Chlamydomonas reinhardtii, a sentinel freshwater species. A wide range of exposure concentrations were investigated from predicted environmental levels, to support hazard assessment, to supra-environmental levels to provide insight into molecular toxicity pathways. Ceria NPs were internalised into intracellular vesicles within C. reinhardtii, yet caused no significant effect on algal growth at any exposure concentration. Molecular perturbations were only detected at supra-environmental ceria NP-concentrations, primarily down-regulation of photosynthesis and carbon fixation with associated effects on energy metabolism. For acute exposures to small mono-dispersed particles, it can be concluded there should be little concern regarding their dispersal into the environment for this trophic level.
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Affiliation(s)
- Nadine S Taylor
- a School of Biosciences, University of Birmingham , Edgbaston , Birmingham , UK
| | - Ruth Merrifield
- b SmartState Center for Environmental Nanoscience and Risk, The Arnold School of Public Health, Environmental Health Sciences, University of South Carolina , Columbia , SC , USA , and.,c School of Geography, Earth and Environmental Science, University of Birmingham , Edgbaston , Birmingham , UK
| | - Tim D Williams
- a School of Biosciences, University of Birmingham , Edgbaston , Birmingham , UK
| | - J Kevin Chipman
- a School of Biosciences, University of Birmingham , Edgbaston , Birmingham , UK
| | - Jamie R Lead
- b SmartState Center for Environmental Nanoscience and Risk, The Arnold School of Public Health, Environmental Health Sciences, University of South Carolina , Columbia , SC , USA , and.,c School of Geography, Earth and Environmental Science, University of Birmingham , Edgbaston , Birmingham , UK
| | - Mark R Viant
- a School of Biosciences, University of Birmingham , Edgbaston , Birmingham , UK
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155
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Leung YH, Yung MMN, Ng AMC, Ma APY, Wong SWY, Chan CMN, Ng YH, Djurišić AB, Guo M, Wong MT, Leung FCC, Chan WK, Leung KMY, Lee HK. Toxicity of CeO2 nanoparticles - the effect of nanoparticle properties. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 145:48-59. [PMID: 25768267 DOI: 10.1016/j.jphotobiol.2015.01.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 01/05/2015] [Accepted: 01/27/2015] [Indexed: 10/23/2022]
Abstract
Conflicting reports on the toxicity of CeO2 nanomaterials have been published in recent years, with some studies finding CeO2 nanoparticles to be toxic, while others found it to have protective effects against oxidative stress. To investigate the possible reasons for this, we have performed a comprehensive study on the physical and chemical properties of nanosized CeO2 from three different suppliers as well as CeO2 synthesized by us, and tested their toxicity. For toxicity tests, we have studied the effects of CeO2 nanoparticles on a Gram-negative bacterium Escherichia coli in the dark, under ambient and UV illuminations. We have also performed toxicity tests on the marine diatom Skeletonema costatum under ambient and UV illuminations. We found that the CeO2 nanoparticle samples exhibited significantly different toxicity, which could likely be attributed to the differences in interactions with cells, and possibly to differences in nanoparticle compositions. Our results also suggest that toxicity tests on bacteria may not be suitable for predicting the ecotoxicity of nanomaterials. The relationship between the toxicity and physicochemical properties of the nanoparticles is explicitly discussed in the light of the current results.
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Affiliation(s)
- Yu Hang Leung
- Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Mana M N Yung
- School of Biological Sciences and the Swire Institute of Marine Science, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Alan M C Ng
- Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China; Department of Physics, South University of Science and Technology of China, 1088 Xueyuan Ave, Nanshan, Shenzhen, China
| | - Angel P Y Ma
- School of Biological Sciences and the Swire Institute of Marine Science, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Stella W Y Wong
- School of Biological Sciences and the Swire Institute of Marine Science, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Charis M N Chan
- School of Biological Sciences and the Swire Institute of Marine Science, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yip Hang Ng
- Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | | | - Muyao Guo
- Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China; Department of Physics, South University of Science and Technology of China, 1088 Xueyuan Ave, Nanshan, Shenzhen, China
| | - Mabel Ting Wong
- School of Biological Sciences and the Swire Institute of Marine Science, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Frederick C C Leung
- School of Biological Sciences and the Swire Institute of Marine Science, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Wai Kin Chan
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Kenneth M Y Leung
- School of Biological Sciences and the Swire Institute of Marine Science, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Hung Kay Lee
- Department of Chemistry, Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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156
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Environmental geochemistry of cerium: applications and toxicology of cerium oxide nanoparticles. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 12:1253-78. [PMID: 25625406 PMCID: PMC4344665 DOI: 10.3390/ijerph120201253] [Citation(s) in RCA: 170] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 01/15/2015] [Indexed: 11/25/2022]
Abstract
Cerium is the most abundant of rare-earth metals found in the Earth’s crust. Several Ce-carbonate, -phosphate, -silicate, and -(hydr)oxide minerals have been historically mined and processed for pharmaceutical uses and industrial applications. Of all Ce minerals, cerium dioxide has received much attention in the global nanotechnology market due to their useful applications for catalysts, fuel cells, and fuel additives. A recent mass flow modeling study predicted that a major source of CeO2 nanoparticles from industrial processing plants (e.g., electronics and optics manufactures) is likely to reach the terrestrial environment such as landfills and soils. The environmental fate of CeO2 nanoparticles is highly dependent on its physcochemical properties in low temperature geochemical environment. Though there are needs in improving the analytical method in detecting/quantifying CeO2 nanoparticles in different environmental media, it is clear that aquatic and terrestrial organisms have been exposed to CeO2 NPs, potentially yielding in negative impact on human and ecosystem health. Interestingly, there has been contradicting reports about the toxicological effects of CeO2 nanoparticles, acting as either an antioxidant or reactive oxygen species production-inducing agent). This poses a challenge in future regulations for the CeO2 nanoparticle application and the risk assessment in the environment.
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157
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Zhang W, Ebbs SD, Musante C, White JC, Gao C, Ma X. Uptake and accumulation of bulk and nanosized cerium oxide particles and ionic cerium by radish (Raphanus sativus L.). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:382-390. [PMID: 25531028 DOI: 10.1021/jf5052442] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The potential toxicity and accumulation of engineered nanomaterials (ENMs) in agricultural crops has become an area of great concern and intense investigation. Interestingly, although below-ground vegetables are most likely to accumulate the highest concentrations of ENMs, little work has been done investigating the potential uptake and accumulation of ENMs for this plant group. The overall objective of this study was to evaluate how different forms of cerium (bulk cerium oxide, cerium oxide nanoparticles, and the cerium ion) affected the growth of radish (Raphanus sativus L.) and accumulation of cerium in radish tissues. Ionic cerium (Ce(3+)) had a negative effect on radish growth at 10 mg CeCl3/L, whereas bulk cerium oxide (CeO2) enhanced plant biomass at the same concentration. Treatment with 10 mg/L cerium oxide nanoparticles (CeO2 NPs) had no significant effect on radish growth. Exposure to all forms of cerium resulted in the accumulation of this element in radish tissues, including the edible storage root. However, the accumulation patterns and their effect on plant growth and physiological processes varied with the characteristics of cerium. This study provides a critical frame of reference on the effects of CeO2 NPs versus their bulk and ionic counterparts on radish growth.
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Affiliation(s)
- Weilan Zhang
- Department of Civil and Environmental Engineering and ‡Department of Plant Biology and Center for Ecology, Southern Illinois University , Carbondale, Illinois 62901, United States
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158
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Ma Y, Metch JW, Vejerano EP, Miller IJ, Leon EC, Marr LC, Vikesland PJ, Pruden A. Microbial community response of nitrifying sequencing batch reactors to silver, zero-valent iron, titanium dioxide and cerium dioxide nanomaterials. WATER RESEARCH 2015; 68:87-97. [PMID: 25462719 DOI: 10.1016/j.watres.2014.09.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 08/18/2014] [Accepted: 09/06/2014] [Indexed: 05/20/2023]
Abstract
As nanomaterials in consumer products increasingly enter wastewater treatment plants, there is concern that they may have adverse effects on biological wastewater treatment. Effects of silver (nanoAg), zero-valent iron (NZVI), titanium dioxide (nanoTiO₂) and cerium dioxide (nanoCeO₂) nanomaterials on nitrification and microbial community structure were examined in duplicate lab-scale nitrifying sequencing batch reactors (SBRs) relative to control SBRs that received no nanomaterials or ionic/bulk analogs. Nitrification function was not measurably inhibited in the SBRs by any of the materials as dosing was initiated at 0.1 mg/L and sequentially increased every 14 days to 1, 10, and 20 mg/L. However, SBRs rapidly lost nitrification function when the Ag⁺ experiment was repeated at a continuous high load of 20 mg/L. Shifts in microbial community structure and decreased microbial diversity were associated with both sequential and high loading of nanoAg and Ag⁺, with more pronounced effects for Ag⁺. Bacteroidetes became more dominant in SBRs dosed with Ag⁺, while Proteobacteria became more dominant in SBRs dosed with nanoAg. The two forms of silver also had distinct effects on specific bacterial genera. A decrease in nitrification gene markers (amoA) was observed in SBRs dosed with nanoAg and Ag⁺. In contrast, impacts of NZVI, nanoTiO₂, nanoCeO₂ and their analogs on microbial community structure and nitrification gene markers were limited. TEM-EDS analysis indicated that a large portion of nanoAg remained dispersed in the activated sludge and formed Ag–S complexes, while NZVI, nanoTiO₂ and nanoCeO₂ were mostly aggregated and chemically unmodified. Overall, this study suggests a high threshold of the four nanomaterials in terms of exerting adverse effects on nitrification function. However, distinct microbial community responses to nanoAg indicate potential long-term effects.
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Affiliation(s)
- Yanjun Ma
- Via Department of Civil and Environmental Engineering, 418 Durham Hall, Virginia Tech, Blacksburg, VA 24061, USA.
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159
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Bonnet M, Massard C, Veisseire P, Camares O, Awitor KO. Environmental Toxicity and Antimicrobial Efficiency of Titanium Dioxide Nanoparticles in Suspension. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/jbnb.2015.63020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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160
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Béatrice S, Wei L, Alain T, Aurélien A, Jean-François H, Mathieu C, Christine E, Corinne C, Wafa A. Design of a live biochip for in situ nanotoxicology studies: a proof of concept. RSC Adv 2015. [DOI: 10.1039/c5ra16960g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper highlights the way in which eukaryotic cell and bacteria based biochips are relevant for nanotoxicological risk assessment.
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Affiliation(s)
| | - Liu Wei
- CEA
- DSV
- IBEB
- SBVME
- Lab Ecol Microb Rhizosphere & Environ Extrem (LEMiRE)
| | - Thiéry Alain
- Aix Marseille Université
- Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE)UMR-CNRS 7263
- Avignon Université
- 13003 Marseille
- France
| | | | - Hochepied Jean-François
- Centre des matériaux: Mines ParisTech
- PSL Research University
- 91003 Evry cedex
- France
- ENSTA UCP SCPI
| | | | | | - Chaneac Corinne
- UPMC Univ Paris 06
- CNRS
- UMR 7574
- Chimie de la Matière Condensée de Paris
- Collège de France
| | - Achouak Wafa
- CEA
- DSV
- IBEB
- SBVME
- Lab Ecol Microb Rhizosphere & Environ Extrem (LEMiRE)
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161
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Dahle JT, Livi K, Arai Y. Effects of pH and phosphate on CeO2 nanoparticle dissolution. CHEMOSPHERE 2015; 119:1365-1371. [PMID: 24630459 DOI: 10.1016/j.chemosphere.2014.02.027] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 02/05/2014] [Accepted: 02/08/2014] [Indexed: 06/03/2023]
Abstract
As the result of rapidly grown nanotechnology industries, release of engineered nanoparticles (ENPs) to environment has increased, posing in a serious risk to environmental and human health. To better understand the chemical fate of ENPs in aquatic environments, solubility of CeO2 NPs was investigated using batch dissolution experiments as a function of pH (1.65-12.5), [phosphate] and particle size (33 and 78 nm). It was found that CeO2 dissolution was only significant at pH<5 and inversely proportional to surface area. After 120 h, the release of Ce was ∼3 times greater in large NPs than that in small NPs that is likely contributed by the difference in exchangeable Ce(III) impurity (small: 0.3 mM kg(-1), large: 1.56 mM kg(-1)). When 100 μM of phosphate was added, the dissolution rate of CeO2 NPs was decreased in small NPs by 15% at pH 1.65 and 75% at pH 4.5 and in large NPs by 56% at pH 1.65 and 63% at pH 4.5. The inner-sphere surface complexation of P that is revealed by the zeta potential measurements is effectively suppressing the CeO2 NP dissolution. Predicting the fate and transport of CeO2 NPs in aquatic environment, pH and P ligands might play important roles in controlling the solubility of CeO2 NPs.
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Affiliation(s)
- Jessica T Dahle
- Clemson University, School of Agricultural, Forest and Environmental Sci., Clemson, SC 29634, USA
| | - Ken Livi
- The Integrated Imaging Center/HRAEM Facility, Departments of Earth and Planetary Sci., Johns Hopkins University, Baltimore, MD 21218, USA
| | - Yuji Arai
- Department of Natural Resources and Environmental Sci., University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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162
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Ecotoxicology of Nanomaterials in Aquatic Systems. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/b978-0-08-099948-7.00001-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
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163
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Garaud M, Trapp J, Devin S, Cossu-Leguille C, Pain-Devin S, Felten V, Giamberini L. Multibiomarker assessment of cerium dioxide nanoparticle (nCeO2) sublethal effects on two freshwater invertebrates, Dreissena polymorpha and Gammarus roeseli. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2015; 158:63-74. [PMID: 25461746 DOI: 10.1016/j.aquatox.2014.11.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 11/04/2014] [Accepted: 11/05/2014] [Indexed: 06/04/2023]
Abstract
Cerium nanoparticles (nCeO2) are widely used in everyday products, as fuel and paint additives. Meanwhile, very few studies on nCeO2 sublethal effects on aquatic organisms are available. We tried to fill this knowledge gap by investigating short-term effects of nCeO2 at environmentally realistic concentrations on two freshwater invertebrates; the amphipod Gammarus roeseli and the bivalve Dreissena polymorpha, using an integrated multibiomarker approach to detect early adverse effects of nCeO2 on organism biology. Differences in the behaviour of the organisms and of nanoparticles in the water column led to differential nCeO2 bioaccumulations, G. roeseli accumulating more cerium than D. polymorpha. Exposure to nCeO2 led to decreases in the size of the lysosomal system, catalase activity and lipoperoxidation in mussel digestive glands that could result from nCeO2 antioxidant properties, but also negatively impacted haemolymph ion concentrations. At the same time, no strong adverse effects of nCeO2 could be observed on G. roeseli. Further experiments will be necessary to confirm the absence of severe nCeO2 adverse effects in long-term environmentally realistic conditions.
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Affiliation(s)
- M Garaud
- Université de Lorraine, CNRS UMR 7360, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Campus Bridoux, Rue du Général Delestraint, 57070 Metz, France; International Consortium for the Environmental Implications of Nanotechnology (iCEINT), Aix en Provence, France
| | - J Trapp
- Université de Lorraine, CNRS UMR 7360, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Campus Bridoux, Rue du Général Delestraint, 57070 Metz, France
| | - S Devin
- Université de Lorraine, CNRS UMR 7360, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Campus Bridoux, Rue du Général Delestraint, 57070 Metz, France
| | - C Cossu-Leguille
- Université de Lorraine, CNRS UMR 7360, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Campus Bridoux, Rue du Général Delestraint, 57070 Metz, France
| | - S Pain-Devin
- Université de Lorraine, CNRS UMR 7360, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Campus Bridoux, Rue du Général Delestraint, 57070 Metz, France
| | - V Felten
- Université de Lorraine, CNRS UMR 7360, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Campus Bridoux, Rue du Général Delestraint, 57070 Metz, France
| | - L Giamberini
- Université de Lorraine, CNRS UMR 7360, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Campus Bridoux, Rue du Général Delestraint, 57070 Metz, France; International Consortium for the Environmental Implications of Nanotechnology (iCEINT), Aix en Provence, France.
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164
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Lu Z, Mao C, Meng M, Liu S, Tian Y, Yu L, Sun B, Li CM. Fabrication of CeO2 nanoparticle-modified silk for UV protection and antibacterial applications. J Colloid Interface Sci 2014; 435:8-14. [DOI: 10.1016/j.jcis.2014.08.015] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 08/06/2014] [Accepted: 08/07/2014] [Indexed: 11/30/2022]
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165
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Suresh Babu K, Anandkumar M, Tsai TY, Kao TH, Stephen Inbaraj B, Chen BH. Cytotoxicity and antibacterial activity of gold-supported cerium oxide nanoparticles. Int J Nanomedicine 2014; 9:5515-31. [PMID: 25473288 PMCID: PMC4251533 DOI: 10.2147/ijn.s70087] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Cerium oxide nanoparticles (CeO2) have been shown to be a novel therapeutic in many biomedical applications. Gold (Au) nanoparticles have also attracted widespread interest due to their chemical stability and unique optical properties. Thus, decorating Au on CeO2 nanoparticles would have potential for exploitation in the biomedical field. METHODS In the present work, CeO2 nanoparticles synthesized by a chemical combustion method were supported with 3.5% Au (Au/CeO2) by a deposition-precipitation method. The as-synthesized Au, CeO2, and Au/CeO2 nanoparticles were evaluated for antibacterial activity and cytotoxicity in RAW 264.7 normal cells and A549 lung cancer cells. RESULTS The as-synthesized nanoparticles were characterized by X-ray diffraction, scanning and transmission electron microscopy, and ultraviolet-visible measurements. The X-ray diffraction study confirmed the formation of cubic fluorite-structured CeO2 nanoparticles with a size of 10 nm. All synthesized nanoparticles were nontoxic towards RAW 264.7 cells at doses of 0-1,000 μM except for Au at >100 μM. For A549 cancer cells, Au/CeO2 had the highest inhibitory effect, followed by both Au and CeO2 which showed a similar effect at 500 and 1,000 μM. Initial binding of nanoparticles occurred through localized positively charged sites in A549 cells as shown by a shift in zeta potential from positive to negative after 24 hours of incubation. A dose-dependent elevation in reactive oxygen species indicated that the pro-oxidant activity of the nanoparticles was responsible for their cytotoxicity towards A549 cells. In addition, cellular uptake seen on transmission electron microscopic images indicated predominant localization of nanoparticles in the cytoplasmic matrix and mitochondrial damage due to oxidative stress. With regard to antibacterial activity, both types of nanoparticles had the strongest inhibitory effect on Bacillus subtilis in monoculture systems, followed by Salmonella enteritidis, Escherichia coli, and Staphylococcus aureus, while, in coculture tests with Lactobacillus plantarum, S. aureus was inhibited to a greater extent than the other bacteria. CONCLUSION Gold-supported CeO2 nanoparticles may be a potential nanomaterial for in vivo application owing to their biocompatible and antibacterial properties.
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Affiliation(s)
- K Suresh Babu
- Centre for Nano Sciences and Technology, Madanjeet School of Green Energy Technologies, Pondicherry University, Kalapet, India
| | - M Anandkumar
- Centre for Nano Sciences and Technology, Madanjeet School of Green Energy Technologies, Pondicherry University, Kalapet, India
| | - TY Tsai
- Department of Food Science, Fu Jen University, Taipei, Taiwan
| | - TH Kao
- Department of Food Science, Fu Jen University, Taipei, Taiwan
| | | | - BH Chen
- Department of Food Science, Fu Jen University, Taipei, Taiwan
- Graduate Institute of Medicine, Fu Jen University, Taipei, Taiwan
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166
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Ponnurangam S, O'Connell GD, Chernyshova IV, Wood K, Hung CTH, Somasundaran P. Beneficial effects of cerium oxide nanoparticles in development of chondrocyte-seeded hydrogel constructs and cellular response to interleukin insults. Tissue Eng Part A 2014; 20:2908-19. [PMID: 24762195 PMCID: PMC4229709 DOI: 10.1089/ten.tea.2013.0592] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 04/24/2014] [Indexed: 12/18/2022] Open
Abstract
The harsh inflammatory environment associated with injured and arthritic joints represents a major challenge to articular cartilage repair. In this study, we report the effect of cerium oxide nanoparticles, or nanoceria, in modulating development of engineered cartilage and in combating the deleterious effects of interleukin-1α. Nanoceria was found to be biocompatible with bovine chondrocytes up to a concentration of 1000 μg/mL (60,000 cells/μg of nanoceria), and its presence significantly improved compressive mechanical properties and biochemical composition (i.e., glycosaminoglycans) of engineered cartilage. Raman microspectroscopy revealed that individual chondrocytes with internalized nanoceria have increased concentrations of proline, procollagen, and glycogen as compared with cells without the nanoparticles in their vicinity. The inflammatory response due to physiologically relevant quantities of interluekin-1α (0.5 ng/mL) is partially inhibited by nanoceria. To the best of the authors' knowledge, these results are the first to demonstrate a high potential for nanoceria to improve articular cartilage tissue properties and for their long-term treatment against an inflammatory reaction.
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Affiliation(s)
- Sathish Ponnurangam
- Department of Earth and Environmental Engineering, Columbia University, New York, New York
| | - Grace D. O'Connell
- Department of Mechanical Engineering, University of California, Berkeley, California
| | - Irina V. Chernyshova
- Department of Earth and Environmental Engineering, Columbia University, New York, New York
| | - Katherine Wood
- Department of Biomedical Engineering, Columbia University, New York, New York
| | - Clark Tung-Hui Hung
- Department of Biomedical Engineering, Columbia University, New York, New York
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167
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Dahle JT, Arai Y. Effects of Ce(III) and CeO₂ nanoparticles on soil-denitrification kinetics. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2014; 67:474-482. [PMID: 24760446 DOI: 10.1007/s00244-014-0031-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Accepted: 03/31/2014] [Indexed: 06/03/2023]
Abstract
Cerium (Ce)-based compounds, such as CeO₂ nanoparticles (NPs), have received much attention in the last several years due to their popular applications in industrial and commercial uses. Understanding the impact of CeO₂ NPs on nutrient cycles, a subchronic toxicity study of CeO₂ NPs on soil-denitrification process was performed as a function of particle size (33 and 78 nm), total Ce concentration (50-500 mg L(-1)), and speciation [Ce(IV) vs. Ce(III)]. The antimicrobial effect on the soil-denitrification process was evaluated in both steady-state and zero-order kinetic models to assess particle- and chemical-species specific toxicity. It was found that soluble Ce(III) was far more toxic than Ce(IV)O₂ NPs when an equal total concentration of Ce was evaluated. Particle size-dependent toxicity, species-dependent toxicity, and concentration-dependent toxicity were all observed in this study for both the steady-state and the kinetic evaluations. Changes in physicochemical properties of Ce(IV)O₂ NPs might be important in assessing the environmental fate and toxicity of NPs in aquatic and terrestrial environments.
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Affiliation(s)
- Jessica T Dahle
- School of Agricultural, Forest and Environmental Sciences, Clemson University, Clemson, SC, 29634, USA
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168
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Holden PA, Klaessig F, Turco RF, Priester JH, Rico CM, Avila-Arias H, Mortimer M, Pacpaco K, Gardea-Torresdey JL. Evaluation of exposure concentrations used in assessing manufactured nanomaterial environmental hazards: are they relevant? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:10541-51. [PMID: 25158225 DOI: 10.1021/es502440s] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Manufactured nanomaterials (MNMs) are increasingly produced and used in consumer goods, yet our knowledge regarding their environmental risks is limited. Environmental risks are assessed by characterizing exposure levels and biological receptor effects. As MNMs have rarely been quantified in environmental samples, our understanding of exposure level is limited. Absent direct measurements, environmental MNM concentrations are estimated from exposure modeling. Hazard, the potential for effects on biological receptors, is measured in the laboratory using a range of administered MNM concentrations. Yet concerns have been raised regarding the "relevancy" of hazard assessments, particularly when the administered MNM concentrations exceed those predicted to occur in the environment. What MNM concentrations are administered in hazard assessments and which are "environmentally relevant"? This review regards MNM concentrations in hazard assessments, from over 600 peer-reviewed articles published between 2008 and 2013. Some administered MNM concentrations overlap with, but many diverge from, predicted environmental concentrations. Other uncertainties influence the environmental relevance of current hazard assessments and exposure models, including test conditions, bioavailable concentrations, mode of action, MNM production volumes, and model validation. Therefore, it may be premature for MNM risk research to sanction information on the basis of concentration "environmental relevance".
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Affiliation(s)
- Patricia A Holden
- Bren School of Environmental Science & Management, University of California Santa Barbara , Santa Barbara, California 93106-5131, United States
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169
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Krishnamoorthy K, Veerapandian M, Zhang LH, Yun K, Kim SJ. Surface chemistry of cerium oxide nanocubes: Toxicity against pathogenic bacteria and their mechanistic study. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.12.043] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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170
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Fisichella M, Berenguer F, Steinmetz G, Auffan M, Rose J, Prat O. Toxicity evaluation of manufactured CeO2 nanoparticles before and after alteration: combined physicochemical and whole-genome expression analysis in Caco-2 cells. BMC Genomics 2014; 15:700. [PMID: 25145350 PMCID: PMC4150968 DOI: 10.1186/1471-2164-15-700] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 08/11/2014] [Indexed: 11/23/2022] Open
Abstract
Background Engineered nanomaterials may release nanosized residues, by degradation, throughout their life cycle. These residues may be a threat for living organisms. They may be ingested by humans through food and water. Although the toxicity of pristine CeO2 nanoparticles (NPs) has been documented, there is a lack of studies on manufactured nanoparticles, which are often surface modified. Here, we investigated the potential adverse effects of CeO2 Nanobyk 3810™ NPs, used in wood care, and their residues, altered by light or acid. Results Human intestinal Caco-2 cells were exposed to residues degraded by daylight or in a medium simulating gastric acidity. Size and zeta potential were determined by dynamic light scattering. The surface structure and redox state of cerium were analyzed by transmission electronic microscopy (TEM) and X-ray absorption spectroscopy, respectively. Viability tests were performed in Caco-2 cells exposed to NPs. Cell morphology was imaged with scanning electronic microscopy. Gene expression profiles obtained from cells exposed to NPs before and after their alteration were compared, to highlight differences in cellular functions. No change in the cerium redox state was observed for altered NPs. All CeO2 NPs suspended in the culture medium became microsized. Cytotoxicity tests showed no toxicity after Caco-2 cell exposure to these various NPs up to 170 μg/mL (24 h and 72 h). Nevertheless, a more-sensitive whole-gene-expression study, based on a pathway-driven analysis, highlighted a modification of metabolic activity, especially mitochondrial function, by altered Nanobyk 3810™. The down-regulation of key genes of this pathway was validated by qRT-PCR. Conversely, Nanobyk 3810™ coated with ammonium citrate did not display any adverse effect at the same concentration. Conclusion The degraded nanoparticles were more toxic than their coated counterparts. Desorption of the outside layer was the most likely cause of this discrepancy in toxicity. It can be assumed that the safe design of engineered nanoparticles could include robust protective layers conferring on them greater resistance to alteration during their life cycle. Electronic supplementary material The online version of this article (doi:10.1186/1471-2164-15-700) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | | | | | | | - Odette Prat
- CEA, IBEB, SBTN, Laboratoire d'Etude des Protéines Cibles, F-30207 Bagnols-sur-Cèze, France.
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171
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Barton LE, Auffan M, Bertrand M, Barakat M, Santaella C, Masion A, Borschneck D, Olivi L, Roche N, Wiesner MR, Bottero JY. Transformation of pristine and citrate-functionalized CeO2 nanoparticles in a laboratory-scale activated sludge reactor. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:7289-7296. [PMID: 24870403 DOI: 10.1021/es404946y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Engineered nanomaterials (ENMs) are used to enhance the properties of many manufactured products and technologies. Increased use of ENMs will inevitably lead to their release into the environment. An important route of exposure is through the waste stream, where ENMs will enter wastewater treatment plants (WWTPs), undergo transformations, and be discharged with treated effluent or biosolids. To better understand the fate of a common ENM in WWTPs, experiments with laboratory-scale activated sludge reactors and pristine and citrate-functionalized CeO2 nanoparticles (NPs) were conducted. Greater than 90% of the CeO2 introduced was observed to associate with biosolids. This association was accompanied by reduction of the Ce(IV) NPs to Ce(III). After 5 weeks in the reactor, 44 ± 4% reduction was observed for the pristine NPs and 31 ± 3% for the citrate-functionalized NPs, illustrating surface functionality dependence. Thermodynamic arguments suggest that the likely Ce(III) phase generated would be Ce2S3. This study indicates that the majority of CeO2 NPs (>90% by mass) entering WWTPs will be associated with the solid phase, and a significant portion will be present as Ce(III). At maximum, 10% of the CeO2 will remain in the effluent and be discharged as a Ce(IV) phase, governed by cerianite (CeO2).
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Affiliation(s)
- Lauren E Barton
- Department of Civil and Environmental Engineering, Duke University , Durham, North Carolina 27708-0287, United States
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172
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Kolmas J, Groszyk E, Kwiatkowska-Różycka D. Substituted hydroxyapatites with antibacterial properties. BIOMED RESEARCH INTERNATIONAL 2014; 2014:178123. [PMID: 24949423 PMCID: PMC4037608 DOI: 10.1155/2014/178123] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 04/14/2014] [Indexed: 02/06/2023]
Abstract
Reconstructive surgery is presently struggling with the problem of infections located within implantation biomaterials. Of course, the best antibacterial protection is antibiotic therapy. However, oral antibiotic therapy is sometimes ineffective, while administering an antibiotic at the location of infection is often associated with an unfavourable ratio of dosage efficiency and toxic effect. Thus, the present study aims to find a new factor which may improve antibacterial activity while also presenting low toxicity to the human cells. Such factors are usually implemented along with the implant itself and may be an integral part of it. Many recent studies have focused on inorganic factors, such as metal nanoparticles, salts, and metal oxides. The advantages of inorganic factors include the ease with which they can be combined with ceramic and polymeric biomaterials. The following review focuses on hydroxyapatites substituted with ions with antibacterial properties. It considers materials that have already been applied in regenerative medicine (e.g., hydroxyapatites with silver ions) and those that are only at the preliminary stage of research and which could potentially be used in implantology or dentistry. We present methods for the synthesis of modified apatites and the antibacterial mechanisms of various ions as well as their antibacterial efficiency.
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Affiliation(s)
- Joanna Kolmas
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Ul. Banacha 1, 02-097 Warsaw, Poland
| | - Ewa Groszyk
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Ul. Banacha 1, 02-097 Warsaw, Poland
| | - Dagmara Kwiatkowska-Różycka
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Ul. Banacha 1, 02-097 Warsaw, Poland
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173
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Masrahi A, VandeVoort AR, Arai Y. Effects of silver nanoparticle on soil-nitrification processes. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2014; 66:504-513. [PMID: 24487627 DOI: 10.1007/s00244-013-9994-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 12/30/2013] [Indexed: 06/03/2023]
Abstract
The release of silver (Ag) nanoparticles (NPs) from the use of consumer products to the environment has raised concern about the risk to ecosystems because of its unpredictable toxicological impact to microorganisms in terrestrial environment. In this study, the impact of Ag chemical speciation (Ag(+) and Ag-NPs [50-nm uncoated and 15-nm polyvinylpyrrolidone (PVP)-coated Ag-NPs]) to soil nitrification kinetics was investigated using a batch soil-slurry nitrification method along with sorption isotherm and dissolution experiments. The results of nitrification potential (i.e., kinetic rate) suggest that Ag(+)/Ag-NPs, which strongly sorb in soils, suppressed the nitrification processes. Among each chemical species, the degree of suppression increased with increasing [Ag]total. Although ionic Ag (Ag(+)) species is known to exhibit greater antimicrobial effects than the solid state Ag species, such as Ag-NPs, in most studies, PVP-coated 15-nm Ag-NPs, however, more effectively suppressed the soil nitrification process than did Ag(+) under the same dose. Although several physicochemical-based toxicity mechanisms of dispersed Ag-NPs were discussed in pure culture and aquatic systems, it is not clearly understood how PVP-coated Ag-NPs could exhibit greater toxicity to nitrifying bacteria than Ag(+) in soils. In assessing the impact of Ag-NPs to microbial mediated processes (e.g., N cycles) in the terrestrial environment, it might be critical to understand the interactions and reactivity of Ag-NPs at the soil-water interface.
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Affiliation(s)
- Abdurrahman Masrahi
- School of Agricultural, Forest and Environmental Sciences, Clemson University, Clemson, SC, 29634, USA
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174
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Petersen EJ, Henry TB, Zhao J, MacCuspie RI, Kirschling T, Dobrovolskaia MA, Hackley V, Xing B, White JC. Identification and avoidance of potential artifacts and misinterpretations in nanomaterial ecotoxicity measurements. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:4226-46. [PMID: 24617739 PMCID: PMC3993845 DOI: 10.1021/es4052999] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 03/04/2014] [Accepted: 03/11/2014] [Indexed: 05/05/2023]
Abstract
Novel physicochemistries of engineered nanomaterials (ENMs) offer considerable commercial potential for new products and processes, but also the possibility of unforeseen and negative consequences upon ENM release into the environment. Investigations of ENM ecotoxicity have revealed that the unique properties of ENMs and a lack of appropriate test methods can lead to results that are inaccurate or not reproducible. The occurrence of spurious results or misinterpretations of results from ENM toxicity tests that are unique to investigations of ENMs (as opposed to traditional toxicants) have been reported, but have not yet been systemically reviewed. Our objective in this manuscript is to highlight artifacts and misinterpretations that can occur at each step of ecotoxicity testing: procurement or synthesis of the ENMs and assessment of potential toxic impurities such as metals or endotoxins, ENM storage, dispersion of the ENMs in the test medium, direct interference with assay reagents and unacknowledged indirect effects such as nutrient depletion during the assay, and assessment of the ENM biodistribution in organisms. We recommend thorough characterization of initial ENMs including measurement of impurities, implementation of steps to minimize changes to the ENMs during storage, inclusion of a set of experimental controls (e.g., to assess impacts of nutrient depletion, ENM specific effects, impurities in ENM formulation, desorbed surface coatings, the dispersion process, and direct interference of ENM with toxicity assays), and use of orthogonal measurement methods when available to assess ENMs fate and distribution in organisms.
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Affiliation(s)
- Elijah J. Petersen
- Biosystems
and Biomaterials Division, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Theodore B. Henry
- School
of Life Sciences, Heriot-Watt University, Edinburgh, United Kingdom
- Center
for Environmental Biotechnology, University
of Tennessee, Knoxville, Tennessee, United States
- Department
of Forestry, Wildlife and Fisheries, University
of Tennessee, Knoxville, Tennessee, United States
| | - Jian Zhao
- Stockbridge
School of Agriculture, University of Massachusetts, Amherst, Massacusetts 01003, United States
| | - Robert I. MacCuspie
- Materials
Measurement Science Division, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Nanotechnology
Program, Florida Polytechnic University, Lakeland, Florida 33801, United States
| | - Teresa
L. Kirschling
- Applied
Chemicals and Materials Division, NIST, Boulder, Colorado 80305, United States
| | - Marina A. Dobrovolskaia
- Nanotechnology
Characterization Laboratory, Cancer Research Technology Program, Leidos
Biomedical Research Inc., Frederick National
Laboratory for Cancer Research, Frederick, Maryland 21702, United States
| | - Vincent Hackley
- Materials
Measurement Science Division, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Baoshan Xing
- Stockbridge
School of Agriculture, University of Massachusetts, Amherst, Massacusetts 01003, United States
| | - Jason C. White
- Department
of Analytical Chemistry, The Connecticut
Agricultural Experiment Station, New Haven, Connecticut 06504, United States
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175
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Cerium oxide and iron oxide nanoparticles abolish the antibacterial activity of ciprofloxacin against gram positive and gram negative biofilm bacteria. Cytotechnology 2014; 67:427-35. [PMID: 24643389 DOI: 10.1007/s10616-014-9701-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 02/12/2014] [Indexed: 10/25/2022] Open
Abstract
Metal oxide nanoparticles have been suggested as good candidates for the development of antibacterial agents. Cerium oxide (CeO2) and iron oxide (Fe2O3) nanoparticles have been utilized in a number of biomedical applications. Here, the antibacterial activity of CeO2 and Fe2O3 nanoparticles were evaluated on a panel of gram positive and gram negative bacteria in both the planktonic and biofilm cultures. Additionally, the effect of combining CeO2 and Fe2O3 nanoparticles with the broad spectrum antibiotic ciprofloxacin on tested bacteria was investigated. Thus, minimum inhibitory concentrations (MICs) of CeO2 and Fe2O3 nanoparticles that are required to inhibit bacterial planktonic growth and bacterial biofilm, were evaluated, and were compared to the MICs of the broad spectrum antibiotic ciprofloxacin alone or in the presence of CeO2 and Fe2O3 nanoparticles. Results of this study show that both CeO2 and Fe2O3 nanoparticles fail to inhibit bacterial growth and biofilm biomass for all the bacterial strains tested. Moreover, adding CeO2 or Fe2O3 nanoparticles to the broad spectrum antibiotic ciprofloxacin almost abolished its antibacterial activity. Results of this study suggest that CeO2 and Fe2O3 nanoparticles are not good candidates as antibacterial agents, and they could interfere with the activity of important antibiotics.
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176
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Das S, Dowding JM, Klump KE, McGinnis JF, Self W, Seal S. Cerium oxide nanoparticles: applications and prospects in nanomedicine. Nanomedicine (Lond) 2014; 8:1483-508. [PMID: 23987111 DOI: 10.2217/nnm.13.133] [Citation(s) in RCA: 300] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Promising results have been obtained using cerium (Ce) oxide nanoparticles (CNPs) as antioxidants in biological systems. CNPs have unique regenerative properties owing to their low reduction potential and the coexistence of both Ce(3+)/Ce(4+) on their surfaces. Defects in the crystal lattice due to the presence of Ce(3+) play an important role in tuning the redox activity of CNPs. The surface Ce(3+):Ce(4+) ratio is influenced by the microenvironment. Therefore, the microenvironment and synthesis method adopted also plays an important role in determining the biological activity and toxicity of CNPs. The presence of a mixed valance state plays an important role in scavenging reactive oxygen and nitrogen species. CNPs are found to be effective against pathologies associated with chronic oxidative stress and inflammation. CNPs are well tolerated in both in vitro and in vivo biological models, which makes CNPs well suited for applications in nanobiology and regenerative medicine.
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Affiliation(s)
- Soumen Das
- Advanced Materials Processing Analysis Center, Nanoscience Technology Center, University of Central Florida, Orlando, FL, USA
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177
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He X, Aker WG, Leszczynski J, Hwang HM. Using a holistic approach to assess the impact of engineered nanomaterials inducing toxicity in aquatic systems. J Food Drug Anal 2014; 22:128-146. [PMID: 24673910 PMCID: PMC9359143 DOI: 10.1016/j.jfda.2014.01.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 11/21/2013] [Indexed: 11/17/2022] Open
Abstract
In this report, we critically reviewed selected intrinsic physicochemical properties of engineered nanomaterials (ENMs) and their role in the interaction of the ENMs with the immediate surroundings in representative aquatic environments. The behavior of ENMs with respect to dynamic microenvironments at the nano–bio–eco interface level, and the resulting impact on their toxicity, fate, and exposure potential are elaborated. Based on this literature review, we conclude that a holistic approach is urgently needed to fulfill our knowledge gap regarding the safety of discharged ENMs. This comparative approach affords the capability to recognize and understand the potential hazards of ENMs and their toxicity mechanisms, and ultimately to establish a quantitative and reliable system to predict such outcomes.
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178
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Binh CTT, Tong T, Gaillard JF, Gray KA, Kelly JJ. Common freshwater bacteria vary in their responses to short-term exposure to nano-TiO2. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2014; 33:317-327. [PMID: 24352762 DOI: 10.1002/etc.2442] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 09/23/2013] [Accepted: 10/21/2013] [Indexed: 06/03/2023]
Abstract
Nanostructured titania (nano-TiO2) is an engineered nanomaterial that can be cytotoxic primarily as a result of its ability to generate reactive oxygen species when illuminated. Production of nano-TiO2 has increased rapidly over the last decade, leading to concerns about its release into aquatic environments. To address the possible ecological impacts of nano-TiO2, the authors used high-throughput screening to assess the responses of 4 bacteria representative of genera common in freshwater to short-term exposure (1-2 h) in 2 natural aqueous media (stream water and lake water) to 2 widely used TiO2 products, pigment white 6 (PW6) and P25. Under simulated solar illumination PW6 and P25 reduced the abundance of viable Bacillus subtilis and Aeromonas hydrophila, confirming the cytotoxicity of nano-TiO2 . In contrast, PW6 and P25 stimulated growth of Arthrobacter sp. and Klebsiella sp., which the authors hypothesize was driven by oxidation of organic matter in these natural waters into more labile compounds. This hypothesis is supported by data demonstrating PW6 photo-oxidation of organic matter in stream water, which subsequently supported enhanced bacterial growth. The results indicate that bacterial responses to nano-TiO2 can be species-specific, suggesting that nano-TiO2 may alter bacterial community composition and function. Finally, the results indicate that bacterial responses to nano-TiO2 are influenced by the water matrix, emphasizing the importance of assessing bacterial responses to nanomaterials in natural environmental media.
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Affiliation(s)
- Chu Thi Thanh Binh
- Department of Biology, Loyola University Chicago, Chicago, Illinois, USA
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179
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Collin B, Oostveen E, Tsyusko OV, Unrine JM. Influence of natural organic matter and surface charge on the toxicity and bioaccumulation of functionalized ceria nanoparticles in Caenorhabditis elegans. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:1280-9. [PMID: 24372151 DOI: 10.1021/es404503c] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The objective of this study was to investigate the role of the CeO2 nanoparticle (NP) surface charge and the presence of natural organic matter (NOM) in determining bioavailability and toxicity to the model soil organism Caenorhabditis elegans. We synthesized CeO2-NPs functionalized with positively charged, negatively charged, and neutral coatings. The positively charged CeO2-NPs were significantly more toxic to C. elegans and bioaccumulated to a greater extent than the neutral and negatively charged CeO2-NPs. Surface charge also affected the oxidation state of Ce in C. elegans tissues after uptake. Greater reduction of Ce from Ce (IV) to Ce (III) was found in C. elegans, when exposed to the neutral and negatively charged relative to positively charged CeO2-NPs. The addition of humic acid (HA) to the exposure media significantly decreased the toxicity of CeO2-NPs, and the ratio of CeO2-NPs to HA influenced Ce bioaccumulation. When the concentration of HA was higher than the CeO2-NP concentration, Ce bioaccumulation decreased. These results suggest that the nature of the pristine coatings as a determinant of hazard may be greatly reduced once CeO2-NPs enter the environment and are coated with NOM.
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Affiliation(s)
- Blanche Collin
- University of Kentucky , Department of Plant and Soil Sciences, Lexington Kentucky 40546, United States
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180
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Klaper R, Arndt D, Bozich J, Dominguez G. Molecular interactions of nanomaterials and organisms: defining biomarkers for toxicity and high-throughput screening using traditional and next-generation sequencing approaches. Analyst 2014; 139:882-95. [DOI: 10.1039/c3an01644g] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The expression of molecular pathways in an organism provides a clue as to the potential impacts of exposure to nanomaterials.
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Affiliation(s)
- Rebecca Klaper
- School of Freshwater Sciences
- University of Wisconsin-Milwaukee
- Milwaukee, USA
| | - Devrah Arndt
- School of Freshwater Sciences
- University of Wisconsin-Milwaukee
- Milwaukee, USA
| | - Jared Bozich
- School of Freshwater Sciences
- University of Wisconsin-Milwaukee
- Milwaukee, USA
| | - Gustavo Dominguez
- School of Freshwater Sciences
- University of Wisconsin-Milwaukee
- Milwaukee, USA
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181
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Mueller-Spitz SR, Crawford KD. Silver nanoparticle inhibition of polycyclic aromatic hydrocarbons degradation by Mycobacterium species RJGII-135. Lett Appl Microbiol 2013; 58:330-7. [PMID: 24286199 DOI: 10.1111/lam.12205] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 10/30/2013] [Accepted: 11/07/2013] [Indexed: 02/03/2023]
Abstract
UNLABELLED Polycyclic aromatic hydrocarbons (PAH) are a common environmental contaminant originating from both anthropogenic and natural sources. Mycobacterium species are highly adapted to utilizing a variety of PAH. Silver nanoparticles (AgNP) are an emerging contaminant that possess bactericidal properties, interferes with the bacterial membrane and alters function. Mycobacterium sp. strain RJGII-135 provided a model bacterium to assess changes in carbon metabolism by focusing on PAH degradation, which is dependent upon passive uptake of hydrophobic molecules into the cell membrane. A mixture of 18 PAH served as a complex mixture of carbon sources for assessing carbon metabolism. At environmentally relevant PAH concentrations, RJGII-135 degraded two-, three-, and four-ring PAH within 72 h, but preferentially attacked phenanthrene and fluorene. Total cell growth and PAH degradation were successively reduced when exposed to 0·05-0·5 mg 1(-1) AgNP. However, 0·05 mg l(-1) AgNP inhibited degradation of naphthalene, acenaphthylene and acenaphthalene. RJGII-135 retained the ability to degrade the methylated naphthalenes regardless of AgNP concentration suggesting that proteins involved in dihydrodiol formation were inhibited. The reduced PAH metabolism of RJGII-135 when exposed to sublethal concentrations of AgNP provides evidence that nanoparticle pollution could alter carbon cycling in soils, sediment and aquatic environments. SIGNIFICANCE AND IMPACT OF THE STUDY Silver nanoparticle (AgNP) pollution threatens bacterial-mediated processes due to their antibacterial properties. With the widespread commercial use of AgNP, continued environmental release is inevitable and we are just beginning to understand the potential environmental ramifications of nanoparticle pollution. This study examined AgNP inhibition of carbon metabolism through the polycyclic aromatic hydrocarbon degradation by Mycobacterium species RJGII-135. Sublethal doses altered PAH metabolism, which is dependent upon cell membrane properties and intracellular proteins. The changed carbon metabolism when exposed to sublethal doses of AgNP suggests broad impacts of this pollution on bacterial carbon cycling in diverse environments.
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Affiliation(s)
- S R Mueller-Spitz
- Department of Biology and Microbiology, University of Wisconsin Oshkosh, Oshkosh, WI, USA
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182
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Courbiere B, Auffan M, Rollais R, Tassistro V, Bonnefoy A, Botta A, Rose J, Orsière T, Perrin J. Ultrastructural interactions and genotoxicity assay of cerium dioxide nanoparticles on mouse oocytes. Int J Mol Sci 2013; 14:21613-28. [PMID: 24185910 PMCID: PMC3856024 DOI: 10.3390/ijms141121613] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 10/04/2013] [Accepted: 10/17/2013] [Indexed: 01/06/2023] Open
Abstract
Cerium dioxide nanoparticles (C(e)O₂ ENPs) are on the priority list of nanomaterials requiring evaluation. We performed in vitro assays on mature mouse oocytes incubated with C(e)O₂ ENPs to study (1) physicochemical biotransformation of ENPs in culture medium; (2) ultrastructural interactions with follicular cells and oocytes using Transmission Electron Microscopy (TEM); (3) genotoxicity of C(e)O₂ ENPs on follicular cells and oocytes using a comet assay. DNA damage was quantified as Olive Tail Moment. We show that ENPs aggregated, but their crystal structure remained stable in culture medium. TEM showed endocytosis of C(e)O₂ ENP aggregates in follicular cells. In oocytes, C(e)O₂ ENP aggregates were only observed around the zona pellucida (ZP). The comet assay revealed significant DNA damage in follicular cells. In oocytes, the comet assay showed a dose-related increase in DNA damage and a significant increase only at the highest concentrations. DNA damage decreased significantly both in follicular cells and in oocytes when an anti-oxidant agent was added in the culture medium. We hypothesise that at low concentrations of C(e)O₂ ENPs oocytes could be protected against indirect oxidative stress due to a double defence system composed of follicular cells and ZP.
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Affiliation(s)
- Blandine Courbiere
- Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale (IMBE), Biogénotoxicologie–Santé humaine et environnement (UMR CNRS 7263–FR CNRS 3098), Aix-Marseille Université, Faculté de médecine, 27 Bd Jean Moulin, Marseille 13005, France; E-Mails: (R.R.); (V.T.); (A.Bon.); (A.Bot.); (T.O.); (J.P.)
- Department of Gynaecology, Obstetrics and Reproduction, Gynepole, AP-HM La Conception, Marseille 13005, France
- Author to whom correspondence should be addressed; E-Mail: or ; Tel.: +33-4-91-38-37-13; Fax: +33-4-91-38-39-71
| | - Mélanie Auffan
- Centre Européen de Recherche et d’Enseignement des Géosciences de l’Environnement (CEREGE), UMR CNRS 7330, Technopôle de l’Arbois-Méditerranée BP80, 13545 Aix en Provence cedex 4, France; E-Mails: (M.A.); (J.R.)
- iCEINT, international consortium for the Environmental Implications of Nanotechnology, Technopôle de l’Environnement Arbois Méditerranée, Avenue Louis Philibert, 13545 Aix-en-Provence, France
| | - Raphaël Rollais
- Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale (IMBE), Biogénotoxicologie–Santé humaine et environnement (UMR CNRS 7263–FR CNRS 3098), Aix-Marseille Université, Faculté de médecine, 27 Bd Jean Moulin, Marseille 13005, France; E-Mails: (R.R.); (V.T.); (A.Bon.); (A.Bot.); (T.O.); (J.P.)
| | - Virginie Tassistro
- Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale (IMBE), Biogénotoxicologie–Santé humaine et environnement (UMR CNRS 7263–FR CNRS 3098), Aix-Marseille Université, Faculté de médecine, 27 Bd Jean Moulin, Marseille 13005, France; E-Mails: (R.R.); (V.T.); (A.Bon.); (A.Bot.); (T.O.); (J.P.)
| | - Aurélie Bonnefoy
- Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale (IMBE), Biogénotoxicologie–Santé humaine et environnement (UMR CNRS 7263–FR CNRS 3098), Aix-Marseille Université, Faculté de médecine, 27 Bd Jean Moulin, Marseille 13005, France; E-Mails: (R.R.); (V.T.); (A.Bon.); (A.Bot.); (T.O.); (J.P.)
| | - Alain Botta
- Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale (IMBE), Biogénotoxicologie–Santé humaine et environnement (UMR CNRS 7263–FR CNRS 3098), Aix-Marseille Université, Faculté de médecine, 27 Bd Jean Moulin, Marseille 13005, France; E-Mails: (R.R.); (V.T.); (A.Bon.); (A.Bot.); (T.O.); (J.P.)
| | - Jérôme Rose
- Centre Européen de Recherche et d’Enseignement des Géosciences de l’Environnement (CEREGE), UMR CNRS 7330, Technopôle de l’Arbois-Méditerranée BP80, 13545 Aix en Provence cedex 4, France; E-Mails: (M.A.); (J.R.)
- iCEINT, international consortium for the Environmental Implications of Nanotechnology, Technopôle de l’Environnement Arbois Méditerranée, Avenue Louis Philibert, 13545 Aix-en-Provence, France
| | - Thierry Orsière
- Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale (IMBE), Biogénotoxicologie–Santé humaine et environnement (UMR CNRS 7263–FR CNRS 3098), Aix-Marseille Université, Faculté de médecine, 27 Bd Jean Moulin, Marseille 13005, France; E-Mails: (R.R.); (V.T.); (A.Bon.); (A.Bot.); (T.O.); (J.P.)
| | - Jeanne Perrin
- Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale (IMBE), Biogénotoxicologie–Santé humaine et environnement (UMR CNRS 7263–FR CNRS 3098), Aix-Marseille Université, Faculté de médecine, 27 Bd Jean Moulin, Marseille 13005, France; E-Mails: (R.R.); (V.T.); (A.Bon.); (A.Bot.); (T.O.); (J.P.)
- Department of Gynaecology, Obstetrics and Reproduction, Gynepole, AP-HM La Conception, Marseille 13005, France
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183
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Silver-doped manganese dioxide and trioxide nanoparticles inhibit both gram positive and gram negative pathogenic bacteria. Colloids Surf B Biointerfaces 2013; 113:429-34. [PMID: 24140741 DOI: 10.1016/j.colsurfb.2013.09.036] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 09/02/2013] [Accepted: 09/18/2013] [Indexed: 11/23/2022]
Abstract
Palladium, ruthenium and silver-doped MnO2 and silver doped Mn2O3 nanoparticles were synthesized by simple co-precipitation technique. SEM-TEM analysis revealed the nano-size of these synthesized samples. XPS data illustrates that Mn is present in 4+ and 3+ oxidation states in MnO2 and Mn2O3 respectively. Thermal analysis gave significant evidence for the phase changes with increasing temperature. Antibacterial activity of these synthesized nanoparticles on three Gram positive bacterial cultures (Staphylococcus aureus ATCC 6538, Streptococcus epidermis ATCC 12228, Bacillus subtilis ATCC 6633) and three Gram negative cultures (Escherichia coli ATCC 8739, Salmonella abony NCTC 6017 and Klebsiella pneumoniae ATCC 1003) was investigated using a disc diffusion method and live/dead assay. Only Ag-doped MnO2 and Ag-doped Mn2O3 nanoparticles showed antibacterial property against all six-test bacteria but Ag-doped MnO2 was found to be more effective than Ag-doped Mn2O3.
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184
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Hossain ST, Mukherjee SK. Toxicity of cadmium sulfide (CdS) nanoparticles against Escherichia coli and HeLa cells. JOURNAL OF HAZARDOUS MATERIALS 2013; 260:1073-82. [PMID: 23892173 DOI: 10.1016/j.jhazmat.2013.07.005] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 06/14/2013] [Accepted: 07/03/2013] [Indexed: 05/09/2023]
Abstract
The present study endeavours to assess the toxic effect of synthesized CdS nanoparticles (NPs) on Escherichia coli and HeLa cells. The CdS NPs were characterized by DLS, XRD, TEM and AFM studies and the average size of NPs was revealed as ∼3 nm. On CdS NPs exposure bacterial cells changed morphological features to filamentous form and damage of the cell surface was found by AFM study. The expression of two conserved cell division components namely ftsZ and ftsQ in E. coli was decreased both at transcriptional and translational levels upon CdS NPs exposure. CdS NPs inhibited proper cell septum formation without affecting the nucleoid segregation. Viability of HeLa cells declined with increasing concentration of CdS NPs and the IC₅₀ value was found to be 4 μg/mL. NPs treated HeLa cells showed changed morphology with condensed and fragmented nuclei. Increased level of reactive oxygen species (ROS) was found both in E. coli and HeLa cells on CdS NPs exposure. The inverse correlation between declined cell viabilities and elevated ROS level suggested that oxidative stress seems to be the key event by which NPs induce toxicity both in E. coli and HeLa cells.
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185
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Eduok S, Martin B, Villa R, Nocker A, Jefferson B, Coulon F. Evaluation of engineered nanoparticle toxic effect on wastewater microorganisms: current status and challenges. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 95:1-9. [PMID: 23769127 DOI: 10.1016/j.ecoenv.2013.05.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 05/15/2013] [Accepted: 05/16/2013] [Indexed: 06/02/2023]
Abstract
The use of engineered nanoparticles (ENPs) in a wide range of products is associated with an increased concern for environmental safety due to their potential toxicological and adverse effects. ENPs exert antimicrobial properties through different mechanisms such as the formation of reactive oxygen species, disruption of physiological and metabolic processes. Although there are little empirical evidences on environmental fate and transport of ENPs, biosolids in wastewater most likely would be a sink for ENPs. However, there are still many uncertainties in relation to ENPs impact on the biological processes during wastewater treatment. This review provides an overview of the available data on the plausible effects of ENPs on AS and AD processes, two key biologically relevant environments for understanding ENPs-microbial interactions. It indicates that the impact of ENPs is not fully understood and few evidences suggest that ENPs could augment microbial-mediated processes such as AS and AD. Further to this, wastewater components can enhance or attenuate ENPs effects. Meanwhile it is still difficult to determine effective doses and establish toxicological guidelines, which is in part due to variable wastewater composition and inadequacy of current analytical procedures. Challenges associated with toxicity evaluation and data interpretation highlight areas in need for further research studies.
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Affiliation(s)
- S Eduok
- Department of Environmental Science and Technology, School of Applied Sciences, Cranfield University, Bedfordshire, UK
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186
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Cuahtecontzi-Delint R, Mendez-Rojas MA, Bandala ER, Quiroz MA, Recillas S, Sanchez-Salas JL. Enhanced Antibacterial Activity of CeO2 Nanoparticles by Surfactants. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2013. [DOI: 10.1515/ijcre-2012-0055] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
CeO2 nanoparticles (NPs) were tested to assess their toxicity on Escherichia coli strain in the presence of non-ionic surfactants. The NPs were dispersed in water by sonication at different pH values and times then mixed with three different surfactants (i.e., Triton X-100, Polyvinyl Pyrrolidone (PVP) and Tween 80) with a concentration of 0.001% v/v. It was found that sonication favored dispersion of the material and produced particles having 100 nm sizes in average. The material show toxicity to E. coli at pH 7 when growth using only minimal M9 media; no toxic response was observed for bacteria growth in rich media. The toxic effect in minimal media was enhanced by adding any of the non-ionic surfactants to the media. The use of CeO2 plus surfactant decreased the minimal inhibitory concentration (MIC) value of E. coli. The highest effect was observed for addition of Tween 80, in this case MIC value was 0.150 mg mL–1 compared to 3 mg mL–1 of CeO2 alone (almost 20 times improvement). These findings suggest the importance of different substances that can interact with NPs, like surfactants, usually present in wastewater systems that may lead to undesirable unexpected toxic characteristics in materials usually considered as innocuous.
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187
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Maurer-Jones MA, Gunsolus IL, Meyer BM, Christenson CJ, Haynes CL. Impact of TiO2 nanoparticles on growth, biofilm formation, and flavin secretion in Shewanella oneidensis. Anal Chem 2013; 85:5810-8. [PMID: 23701037 PMCID: PMC3733218 DOI: 10.1021/ac400486u] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Understanding of nanoparticle impacts on critical bacteria functions allows us to gain a mechanistic understanding of toxicity and guides us toward design rules for creating safe nanomaterials. Herein, biofilm formation, a general bacteria function, and riboflavin secretion, a species-specific function, were monitored in Shewanella oneidensis, a metal reducing bacterium, following exposure to a variety of TiO2 nanoparticle types (synthesized, Aeroxide P25, and T-Eco). Transmission electron microscopy (TEM) images show that dosed nanoparticles are in close proximity to the bacteria, but they are not internalized. Using quartz crystal microbalance (QCM), it was revealed that S. oneidensis biofilm formation is slowed in the presence of nanoparticles. Though S. oneidensis grows more slowly in the presence of TiO2 nanoparticles, riboflavin secretion, a function related to the S. oneidensis metal reducing capacity, was increased significantly in a nanoparticle dose-dependent manner. Both changes in biofilm formation and riboflavin secretion are supported by changes in gene expression in nanoparticle-exposed S. oneidensis. This broad study of bacterial nanotoxicity, including use of sensitive analytical tools for functional assessments of biofilm formation, riboflavin secretion, and gene expression, has implications for total ecosystem health as the use of engineered nanoparticles grows.
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Affiliation(s)
| | - Ian L. Gunsolus
- Department of Chemistry, University of Minnesota, 207 Pleasant St SE, Minneapolis, MN 55455
| | - Ben M. Meyer
- Department of Chemistry, University of Minnesota, 207 Pleasant St SE, Minneapolis, MN 55455
| | - Cole J. Christenson
- Department of Chemistry, University of Minnesota, 207 Pleasant St SE, Minneapolis, MN 55455
| | - Christy L. Haynes
- Department of Chemistry, University of Minnesota, 207 Pleasant St SE, Minneapolis, MN 55455
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188
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Maurer-Jones MA, Gunsolus IL, Murphy CJ, Haynes CL. Toxicity of engineered nanoparticles in the environment. Anal Chem 2013; 85:3036-49. [PMID: 23427995 PMCID: PMC4104669 DOI: 10.1021/ac303636s] [Citation(s) in RCA: 364] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
While nanoparticles occur naturally in the environment and have been intentionally used for centuries, the production and use of engineered nanoparticles has seen a recent spike, which makes environmental release almost certain. Therefore, recent efforts to characterize the toxicity of engineered nanoparticles have focused on the environmental implications, including exploration of toxicity to organisms from wide-ranging parts of the ecosystem food webs. Herein, we summarize the current understanding of toxicity of engineered nanoparticles to representatives of various trophic levels, including bacteria, plants, and multicellular aquatic/terrestrial organisms, to highlight important challenges within the field of econanotoxicity, challenges that analytical chemists are expertly poised to address.
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Affiliation(s)
- Melissa A. Maurer-Jones
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Ian L. Gunsolus
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Catherine J. Murphy
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Christy L. Haynes
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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189
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Toxicological evaluations of rare earths and their health impacts to workers: a literature review. Saf Health Work 2013; 4:12-26. [PMID: 23516020 PMCID: PMC3601293 DOI: 10.5491/shaw.2013.4.1.12] [Citation(s) in RCA: 201] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 11/08/2012] [Accepted: 11/08/2012] [Indexed: 12/20/2022] Open
Abstract
In concert with the development of new materials in the last decade, the need for toxicological studies of these materials has been increasing. These new materials include a group of rare earths (RE). The use of RE nanotechnology is being considered in some green applications, to increase their efficiency by using nano-sized RE compounds, and therefore hazard evaluation and risk assessment are highly recommended. This review was conducted through an extensive contemplation of the literatures in toxicology with in vitro and in vivo studies. Major aspects reviewed were the toxicological evaluations of these elements and metallic compounds at the molecular and cellular level, animal and human epidemiological studies and environmental and occupational health impacts on workers. We also discuss the future prospect of industries with appliances using RE together with the significance of preventive efforts for workers' health. To establish a safe and healthy working environment for RE industries, the use of biomarkers is increasing to provide sustainable measure, due to demand for information about the health risks from unfavorable exposures. Given the recent toxicological results on the exposure of cells, animals and workers to RE compounds, it is important to review the toxicological studies to improve the current understanding of the RE compounds in the field of occupational health. This will help to establish a sustainable, safe and healthy working environment for RE industries.
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190
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Rim KT, Koo KH, Park JS. Toxicological evaluations of rare earths and their health impacts to workers: a literature review. Saf Health Work 2013. [PMID: 23516020 DOI: 10.1007/10.5491/shaw.2013.4.1.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
In concert with the development of new materials in the last decade, the need for toxicological studies of these materials has been increasing. These new materials include a group of rare earths (RE). The use of RE nanotechnology is being considered in some green applications, to increase their efficiency by using nano-sized RE compounds, and therefore hazard evaluation and risk assessment are highly recommended. This review was conducted through an extensive contemplation of the literatures in toxicology with in vitro and in vivo studies. Major aspects reviewed were the toxicological evaluations of these elements and metallic compounds at the molecular and cellular level, animal and human epidemiological studies and environmental and occupational health impacts on workers. We also discuss the future prospect of industries with appliances using RE together with the significance of preventive efforts for workers' health. To establish a safe and healthy working environment for RE industries, the use of biomarkers is increasing to provide sustainable measure, due to demand for information about the health risks from unfavorable exposures. Given the recent toxicological results on the exposure of cells, animals and workers to RE compounds, it is important to review the toxicological studies to improve the current understanding of the RE compounds in the field of occupational health. This will help to establish a sustainable, safe and healthy working environment for RE industries.
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Affiliation(s)
- Kyung Taek Rim
- Center for Chemical Safety and Health, Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, Daejeon, Korea
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191
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Raftery TD, Lindler H, McNealy TL. Altered host cell-bacteria interaction due to nanoparticle interaction with a bacterial biofilm. MICROBIAL ECOLOGY 2013; 65:496-503. [PMID: 23052925 DOI: 10.1007/s00248-012-0128-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 09/15/2012] [Indexed: 06/01/2023]
Abstract
Nanoparticle (NP) use in everyday applications creates the potential for NPs to enter the environment where, in aquatic systems, they are likely to settle on substrates and interact with microbial communities. Legionella pneumophila biofilms are found as part of microbial communities in both natural and man-made environments, especially in man-made cooling systems. The bacterium is the causative agent of Legionnaires' disease. Legionella requires a host cell for replication in the environment, and amoebae commonly serve as this host cell. Our previous work demonstrated significant changes in Legionella biofilm morphology after exposure to 0.7 μg/L gold NPs (AuNPs). Here, we investigate how these morphology changes alter host-bacteria interactions using Acanthamoeba polyphaga as a model. Host-bacteria-NP interactions are affected by NP characteristics. Biofilms exposed to 4- and 18-nm, citrate-capped, spherical AuNPs significantly altered the grazing ability of A. polyphaga, which was not observed in biofilms exposed to 24-nm polystyrene beads. Uptake and replication of NP-exposed planktonic L. pneumophila within A. polyphaga were not altered regardless of NP size or core chemistry. Nanomaterial effects on the interaction of benthic organisms and bacteria may be directly or, as shown here, indirectly dependent on bacterial morphology. NP contamination therefore may alter interactions in a normal ecosystem function.
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Affiliation(s)
- Tara D Raftery
- Institute of Environmental Toxicology (CU-ENTOX), Clemson University, Clemson, SC 29634, USA.
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192
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Suresh AK, Pelletier DA, Doktycz MJ. Relating nanomaterial properties and microbial toxicity. NANOSCALE 2013; 5:463-474. [PMID: 23203029 DOI: 10.1039/c2nr32447d] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Metal and metal oxide nanoparticles are among the most commonly used nanomaterials and their potential for adversely affecting environmental systems raises concern. Complex microbial consortia underlie environmental processes, and the potential toxicity of nanoparticles to microbial systems, and the consequent impacts on trophic balances, is particularly worrisome. The diverse array of metal and metal oxides, the different sizes and shapes that can be prepared and the variety of possible surface coatings complicate assessments of toxicity. Further muddling biocidal interpretations are the diversity of microbes and their intrinsic tolerances to stresses. Here, we review a range of studies focused on nanoparticle-microbial interactions in an effort to correlate the physical-chemical properties of engineered metal and metal oxide nanoparticles to their biological response. General conclusions regarding the parent material of the nanoparticle and the nanoparticle's size and shape on potential toxicity can be made. However, the surface coating of the material, which can be altered significantly by environmental conditions, can ameliorate or promote microbial toxicity. Understanding nanoparticle transformations and how the nanoparticle surface can be designed to control toxicity represents a key area for further study. Additionally, the vast array of microbial species and the structuring of these species within communities complicate extrapolations of nanoparticle toxicity in real world settings. Ultimately, to interpret the effect and eventual fate of engineered materials in the environment, an understanding of the relationship between nanoparticle properties and responses at the molecular, cellular and community levels will be essential.
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Affiliation(s)
- Anil K Suresh
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
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193
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Aruguete DM, Kim B, Hochella MF, Ma Y, Cheng Y, Hoegh A, Liu J, Pruden A. Antimicrobial nanotechnology: its potential for the effective management of microbial drug resistance and implications for research needs in microbial nanotoxicology. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2013; 15:93-102. [PMID: 24592430 DOI: 10.1039/c2em30692a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The development of antibiotics revolutionized human health, providing a simple cure for once dreaded diseases such as tuberculosis. However, widespread production, use, and mis-use of antibiotics have contributed to the next-generation concern for global public health: the emergence of multiple drug-resistant (MDR) infectious organisms (a.k.a. “superbugs”). Recently, nanotechnology, specifically the use of nanomaterials (NMs) with antimicrobial activity, has been presented as a new defense against MDR infectious organisms. We discuss the potential for NMs to either circumvent microbial resistance or induce its development in light of our current state of knowledge, finding that this question points to a need for fundamental research targeting the molecular mechanisms causing antimicrobial activity in NMs. In the context of current microbial nanotoxicology studies, particularly reductionist laboratory studies, we offer suggestions and considerations for future research, using an illustrative example from our work with silver nanoparticles.
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194
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Bandyopadhyay S, Peralta-Videa JR, Plascencia-Villa G, José-Yacamán M, Gardea-Torresdey JL. Comparative toxicity assessment of CeO2 and ZnO nanoparticles towards Sinorhizobium meliloti, a symbiotic alfalfa associated bacterium: use of advanced microscopic and spectroscopic techniques. JOURNAL OF HAZARDOUS MATERIALS 2012; 241-242:379-86. [PMID: 23083939 DOI: 10.1016/j.jhazmat.2012.09.056] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 09/21/2012] [Accepted: 09/22/2012] [Indexed: 05/07/2023]
Abstract
Cerium oxide (CeO(2)) and zinc oxide (ZnO) nanoparticles (NPs) are extensively used in a variety of instruments and consumer goods. These NPs are of great concern because of potential toxicity towards human health and the environment. The present work aimed to assess the toxic effects of 10nm CeO(2) and ZnO NPs towards the nitrogen fixing bacterium Sinorhizobium meliloti. Toxicological parameters evaluated included UV/Vis measurement of minimum inhibitory concentration, disk diffusion tests, and dynamic growth. Ultra high-resolution scanning transmission electron microscopy (STEM) and infrared spectroscopy (FTIR) were utilized to determine the spatial distribution of NPs and macromolecule changes in bacterial cells, respectively. Results indicate that ZnO NPs were more toxic than CeO(2) NPs in terms of inhibition of dynamic growth and viable cells counts. STEM images revealed that CeO(2) and ZnO NPs were found on bacterial cell surfaces and ZnO NPs were internalized into the periplasmic space of the cells. FTIR spectra showed changes in protein and polysaccharide structures of extra cellular polymeric substances present in bacterial cell walls treated with both NPs. The growth data showed that CeO(2) NPs have a bacteriostatic effect, whereas ZnO NPs is bactericidal to S. meliloti. Overall, ZnO NPs were found to be more toxic than CeO(2) NPs.
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Affiliation(s)
- Susmita Bandyopadhyay
- Environmental Science and Engineering PhD Program, The University of Texas at El Paso, 500 West University Avenue, El Paso, TX 79968, USA
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195
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Johnson AC, Park B. Predicting contamination by the fuel additive cerium oxide engineered nanoparticles within the United Kingdom and the associated risks. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2012; 31:2582-7. [PMID: 22893546 DOI: 10.1002/etc.1983] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 04/04/2012] [Accepted: 07/13/2012] [Indexed: 05/26/2023]
Abstract
As a fuel additive, cerium oxide nanoparticles may become widely dispersed throughout the environment. Commercial information from the United Kingdom (UK) on the use of cerium oxide nanoparticles was used to perform a modeling and risk assessment exercise. Discharge from exhausts took into account the likely removal by filters fitted to these vehicles. For predicting current soil exposure, scenarios were examined, ranging from dispersion occurring across the entire UK landmass to only within the urban area to only 20 m on either side of road networks. For soils, the highest predicted contamination level was 0.016 mg/kg within 20 m of a road following seven years of continuous deposition. This value would represent 0.027% of reported natural background cerium. If usage were to double for five more years, levels would not be expected to exceed 0.04 mg/kg. River water contamination considered direct aerial deposition and indirect contamination via runoff in the water and entrained soil sediment, with the highest level of 0.02 ng/L predicted. The highest predicted water concentration of 300 ng/L was associated with water draining from a road surface, assuming a restricted deposition spread. These predictions are well below most toxicological levels of concern.
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Affiliation(s)
- Andrew C Johnson
- Centre for Ecology and Hydrology, Wallingford, Oxfordshire, United Kingdom.
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196
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Shah V, Shah S, Shah H, Rispoli FJ, McDonnell KT, Workeneh S, Karakoti A, Kumar A, Seal S. Antibacterial activity of polymer coated cerium oxide nanoparticles. PLoS One 2012; 7:e47827. [PMID: 23110109 PMCID: PMC3482233 DOI: 10.1371/journal.pone.0047827] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 09/17/2012] [Indexed: 01/19/2023] Open
Abstract
Cerium oxide nanoparticles have found numerous applications in the biomedical industry due to their strong antioxidant properties. In the current study, we report the influence of nine different physical and chemical parameters: pH, aeration and, concentrations of MgSO4, CaCl2, KCl, natural organic matter, fructose, nanoparticles and Escherichia coli, on the antibacterial activity of dextran coated cerium oxide nanoparticles. A least-squares quadratic regression model was developed to understand the collective influence of the tested parameters on the anti-bacterial activity and subsequently a computer-based, interactive visualization tool was developed. The visualization allows us to elucidate the effect of each of the parameters in combination with other parameters, on the antibacterial activity of nanoparticles. The results indicate that the toxicity of CeO2 NPs depend on the physical and chemical environment; and in a majority of the possible combinations of the nine parameters, non-lethal to the bacteria. In fact, the cerium oxide nanoparticles can decrease the anti-bacterial activity exerted by magnesium and potassium salts.
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Affiliation(s)
- Vishal Shah
- Department of Biology, Dowling College, Oakdake, New York, United States of America
- * E-mail: (VS); (S. Seal)
| | - Shreya Shah
- Department of Biology, Dowling College, Oakdake, New York, United States of America
| | - Hirsh Shah
- Department of Biology, Dowling College, Oakdake, New York, United States of America
| | - Fred J. Rispoli
- Department of Mathematics and Computer Science, Dowling College, Oakdale, New York, United States of America
| | - Kevin T. McDonnell
- Department of Mathematics and Computer Science, Dowling College, Oakdale, New York, United States of America
| | - Selam Workeneh
- Department of Biology, Southern University at New Orleans, New Orleans, Louisiana, United States of America
| | - Ajay Karakoti
- Advanced Materials Processing Analysis Center, Nanoscience Technology Center, Mechanical Materials Aerospace Eng, University of Central Florida, Orlando, Florida, United States of America
| | - Amit Kumar
- Advanced Materials Processing Analysis Center, Nanoscience Technology Center, Mechanical Materials Aerospace Eng, University of Central Florida, Orlando, Florida, United States of America
| | - Sudipta Seal
- Advanced Materials Processing Analysis Center, Nanoscience Technology Center, Mechanical Materials Aerospace Eng, University of Central Florida, Orlando, Florida, United States of America
- * E-mail: (VS); (S. Seal)
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197
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Wang Q, Ma X, Zhang W, Pei H, Chen Y. The impact of cerium oxide nanoparticles on tomato (Solanum lycopersicum L.) and its implications for food safety. Metallomics 2012; 4:1105-12. [PMID: 22986766 DOI: 10.1039/c2mt20149f] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Sustainable development of nanotechnology requires an understanding of the long term ecotoxicological impact of engineered nanomaterials on the environment. Cerium oxide nanoparticles (CeO₂-NPs) have great potential to accumulate and adversely affect the environment owing to their widespread applications in commercial products. This study documented the chronic phenotypic response of tomato plants to CeO₂-NPs (0.1-10 mg L⁻¹) and determined the effect of CeO₂-NPs on tomato yield. The results indicated that CeO₂-NPs at the concentrations applied in this study had either an inconsequential or a slightly positive effect on plant growth and tomato production. However, elevated cerium content was detected in plant tissues exposed to CeO₂-NPs, suggesting that CeO₂-NPs were taken up by tomato roots and translocated to shoots and edible tissues. In particular, substantially higher Ce concentrations were detected in the fruits exposed to 10 mg L⁻¹ CeO₂-NPs, compared with controls. This study sheds light on the long term impact of CeO₂-NPs on plant health and its implications for our food safety and security.
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Affiliation(s)
- Qiang Wang
- Department of Civil and Environmental Engineering, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
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198
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Priester JH, Ge Y, Mielke RE, Horst AM, Moritz SC, Espinosa K, Gelb J, Walker SL, Nisbet RM, An YJ, Schimel JP, Palmer RG, Hernandez-Viezcas JA, Zhao L, Gardea-Torresdey JL, Holden PA. Soybean susceptibility to manufactured nanomaterials with evidence for food quality and soil fertility interruption. Proc Natl Acad Sci U S A 2012; 109:E2451-6. [PMID: 22908279 PMCID: PMC3443164 DOI: 10.1073/pnas.1205431109] [Citation(s) in RCA: 247] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Based on previously published hydroponic plant, planktonic bacterial, and soil microbial community research, manufactured nanomaterial (MNM) environmental buildup could profoundly alter soil-based food crop quality and yield. However, thus far, no single study has at once examined the full implications, as no studies have involved growing plants to full maturity in MNM-contaminated field soil. We have done so for soybean, a major global commodity crop, using farm soil amended with two high-production metal oxide MNMs (nano-CeO(2) and -ZnO). The results provide a clear, but unfortunate, view of what could arise over the long term: (i) for nano-ZnO, component metal was taken up and distributed throughout edible plant tissues; (ii) for nano-CeO(2), plant growth and yield diminished, but also (iii) nitrogen fixation--a major ecosystem service of leguminous crops--was shut down at high nano-CeO(2) concentration. Juxtaposed against widespread land application of wastewater treatment biosolids to food crops, these findings forewarn of agriculturally associated human and environmental risks from the accelerating use of MNMs.
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Affiliation(s)
- John H. Priester
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
| | - Yuan Ge
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
| | - Randall E. Mielke
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Division of Geological and Planetary Sciences, NASA/Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91101
| | - Allison M. Horst
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
| | | | | | | | - Sharon L. Walker
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521
| | - Roger M. Nisbet
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA 93106
| | - Youn-Joo An
- Department of Environmental Science, Konkuk University, Seoul 143–701, Korea
| | - Joshua P. Schimel
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA 93106
| | - Reid G. Palmer
- Department of Agronomy, Iowa State University, Ames, IA 50011
- Corn Insects and Crop Genetics Research Unit, Agricultural Research Service, US Department of Agriculture, Ames, IA 50011; and
| | - Jose A. Hernandez-Viezcas
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968
| | - Lijuan Zhao
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968
| | - Jorge L. Gardea-Torresdey
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968
| | - Patricia A. Holden
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
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199
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Identification of soil bacteria susceptible to TiO2 and ZnO nanoparticles. Appl Environ Microbiol 2012; 78:6749-58. [PMID: 22798374 DOI: 10.1128/aem.00941-12] [Citation(s) in RCA: 189] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Because soil is expected to be a major sink for engineered nanoparticles (ENPs) released to the environment, the effects of ENPs on soil processes and the organisms that carry them out should be understood. DNA-based fingerprinting analyses have shown that ENPs alter soil bacterial communities, but specific taxon changes remain unknown. We used bar-coded pyrosequencing to explore the responses of diverse bacterial taxa to two widely used ENPs, nano-TiO(2) and nano-ZnO, at various doses (0, 0.5, 1.0, and 2.0 mg g(-1) soil for TiO(2); 0.05, 0.1, and 0.5 mg g(-1) soil for ZnO) in incubated soil microcosms. These ENPs significantly altered the bacterial communities in a dose-dependent manner, with some taxa increasing as a proportion of the community, but more taxa decreasing, indicating that effects mostly reduced diversity. Some of the declining taxa are known to be associated with nitrogen fixation (Rhizobiales, Bradyrhizobiaceae, and Bradyrhizobium) and methane oxidation (Methylobacteriaceae), while some positively impacted taxa are known to be associated with the decomposition of recalcitrant organic pollutants (Sphingomonadaceae) and biopolymers including protein (Streptomycetaceae and Streptomyces), indicating potential consequences to ecosystem-scale processes. The latter was suggested by a positive correlation between protease activity and the relative abundance of Streptomycetaceae (R = 0.49, P = 0.000) and Streptomyces (R = 0.47, P = 0.000). Our results demonstrate that some metal oxide nanoparticles could affect soil bacterial communities and associated processes through effects on susceptible, narrow-function bacterial taxa.
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200
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Li Y, Zhang W, Niu J, Chen Y. Mechanism of photogenerated reactive oxygen species and correlation with the antibacterial properties of engineered metal-oxide nanoparticles. ACS NANO 2012; 6:5164-73. [PMID: 22587225 DOI: 10.1021/nn300934k] [Citation(s) in RCA: 816] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Oxidative stress induced by reactive oxygen species (ROS) is one of the most important antibacterial mechanisms of engineered nanoparticles (NPs). To elucidate the ROS generation mechanisms, we investigated the ROS production kinetics of seven selected metal-oxide NPs and their bulk counterparts under UV irradiation (365 nm). The results show that different metal oxides had distinct photogenerated ROS kinetics. Particularly, TiO(2) nanoparticles and ZnO nanoparticles generated three types of ROS (superoxide radical, hydroxyl radical, and singlet oxygen), whereas other metal oxides generated only one or two types or did not generate any type of ROS. Moreover, NPs yielded more ROS than their bulk counterparts likely due to larger surface areas of NPs providing more absorption sites for UV irradiation. The ROS generation mechanism was elucidated by comparing the electronic structures (i.e., band edge energy levels) of the metal oxides with the redox potentials of various ROS generation, which correctly interpreted the ROS generation of most metal oxides. To develop a quantitative relationship between oxidative stress and antibacterial activity of NPs, we examined the viability of E. coli cells in aqueous suspensions of NPs under UV irradiation, and a linear correlation was found between the average concentration of total ROS and the bacterial survival rates (R(2) = 0.84). Although some NPs (i.e., ZnO and CuO nanoparticles) released toxic ions that partially contributed to their antibacterial activity, this correlation quantitatively linked ROS production capability of NPs to their antibacterial activity as well as shed light on the applications of metal-oxide NPs as potential antibacterial agents.
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Affiliation(s)
- Yang Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China
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