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Salama MI, El Morsi DA, Shabka O, Emam NM. Assessment of genotoxicity of silver nanoparticles on lymphocyte cells of albino rats using comet assay. Toxicol Res (Camb) 2021; 10:1085-1091. [PMID: 34956613 DOI: 10.1093/toxres/tfab092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 09/15/2021] [Accepted: 09/22/2021] [Indexed: 11/13/2022] Open
Abstract
Silver nanoparticles, "AgNPs", represent a prominent nanoproduct, but most of the previous toxicity studies on its genotoxicity are still limited. The current study aimed to assess the genotoxicity of AgNPs on lymphocyte cells using comet assay and to study the recovery probability. It was conducted on 50 adult male albino rats divided into "Control group", 10 rats were injected intraperitoneal, "IP", with distilled water for 28 days, and "Test groups", 40 rats were injected "IP" with 13 ± 3 nm AgNPs for 28 days, subdivided into group I: 10 rats were injected with 2 mg/kg AgNPs, group Ia: 10 rats were injected with 2 mg/kg AgNPs and left for another 4 weeks without scarification, group II: 10 rats were injected with 4 mg/kg AgNPs, and group IIa: 10 rats were injected with 4 mg/kg and left for another 4 weeks without scarification. There was a highly significant decrease in head parameters with an increase in tail parameters in both groups I and II and in group II more than group I. Moreover, there was a highly significant increase in head parameters with a decrease in tail parameters in group Ia compared with the control group and group IIa. Comets were classified according to the tail intensity and according to visual scoring for DNA damage, which revealed different grades of DNA damage with a degree of reversibility after 4 weeks stoppage of exposure. It could be concluded that AgNPs were considered to cause harmful genotoxic effects to the human body in a dose-dependent manner.
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Affiliation(s)
- Mai I Salama
- Faculty of Medicine, Forensic Medicine and Clinical Toxicology Department, Mansoura University, Mansoura 35516, Egypt
| | - Doaa A El Morsi
- Faculty of Medicine, Forensic Medicine and Clinical Toxicology Department, Mansoura University, Mansoura 35516, Egypt
| | - Osama Shabka
- Faculty of Medicine, Forensic Medicine and Clinical Toxicology Department, Mansoura University, Mansoura 35516, Egypt
| | - Nermin M Emam
- Faculty of Medicine, Forensic Medicine and Clinical Toxicology Department, Mansoura University, Mansoura 35516, Egypt
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2
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Highly selective and sensitive colorimetric chemosensor based on tricarboyanine for detection of Ag+ in industrial wastewater. JOURNAL OF LEATHER SCIENCE AND ENGINEERING 2020. [DOI: 10.1186/s42825-020-00031-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Abstract
An efficient fluorescent probe 1 based on tricarbocyanine derivative was designed and synthesized, which can detect Ag+ in real industrial wastewater. UV-Vis absorption and fluorescent emission spectra of probe 1 were carried out and indicated this probe can bind Ag+ via complexation reaction, then leading to a remarkable color change from blue to light red. Furthermore, probe 1 showed high sensitive performance and excellent selectivity toward Ag+ over other common metal ions in neutral pH. The sensing mechanism was proposed and further confirmed by 1H NMR, which demonstrate analyte-induced destruction of the π-electron system could be shorten by the disruption of the pull-push π-conjugation system in probe 1. Moreover, a test strip was prepared by filter paper immersing in probe 1 solution, which further provide its potential application for trace Ag+ detection in real industrial wastewater.
Graphical abstract
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3
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Neurotoxicity of silver nanoparticles stabilized with different coating agents: In vitro response of neuronal precursor cells. Food Chem Toxicol 2020; 136:110935. [DOI: 10.1016/j.fct.2019.110935] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/18/2019] [Accepted: 10/29/2019] [Indexed: 12/31/2022]
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4
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Morais LDO, Macedo EV, Granjeiro JM, Delgado IF. Critical evaluation of migration studies of silver nanoparticles present in food packaging: a systematic review. Crit Rev Food Sci Nutr 2019; 60:3083-3102. [DOI: 10.1080/10408398.2019.1676699] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Luciene de Oliveira Morais
- Post-Graduation Program in Health Surveillance, National Institute of Quality Control in Health, Rio de Janeiro, Brazil
| | | | - José Mauro Granjeiro
- Bioengineering Laboratory, National Institute of Metrology Quality and Technology, Rio de Janeiro, Brazil
- Materials Department, School of Dentistry, Federal Fluminense University, Niteroi, Brazil
| | - Isabella Fernandes Delgado
- Vice Presidency of Education, Information and Communication, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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5
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Pulmonary and hepatic effects after low dose exposure to nanosilver: Early and long-lasting histological and ultrastructural alterations in rat. Toxicol Rep 2019; 6:1047-1060. [PMID: 31673507 PMCID: PMC6816130 DOI: 10.1016/j.toxrep.2019.09.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/17/2019] [Accepted: 09/20/2019] [Indexed: 01/28/2023] Open
Abstract
Low AgNPs dose caused in vivo toxic effects both at portal entry and distant organ. Lung and liver tissues were damaged in Nanosilver-instilled rat. Early and long-lasting histological and ultrastructural alterations were detected. Overall pulmonary injury was more striking compared to hepatic outcomes.
Although environmental airborne silver nanoparticles (AgNPs) levels in occupational and environmental settings are harmful to humans, the precise toxic effects at the portal entry of exposure and after translocation to distant organs are still to be deeply clarified. To this aim, the present study assessed histopathological and ultrastructural alterations (by means of H&E and TEM, respectively) in rat lung and liver, 7 and 28 days after a single intratracheal instillation (i.t) of a low AgNP dose (50 microg/rat), compared to those induced by an equivalent dose of ionic silver (7 microg AgNO3/rat). Lung parenchyma injury was observed acutely after either AgNPs or AgNO3, with the latter compound causing more pronounced effects. Specifically, alveolar collapse accompanied by inflammatory alterations and parenchymal fibrosis were revealed. These effects lasted until the 28th day, a partial pulmonary structure recovery occurred, nevertheless a persistence of slight inflammatory/fibrotic response and apoptotic phenomena were still detected after AgNPs and AgNO3, respectively. Concerning the liver, a diffuse hepatocyte injury was observed, characterized by cytoplasmic damage and dilation of sinusoids, engulfed by degraded material, paralleled by inflammation onset. These effects already detectable at day 7, persisting at the 28th day with some attenuations, were more marked after AgNO3 compared to AgNPs, with the latter able to induce a ductular reaction. Altogether the present findings indicate toxic effects induced by AgNPs both at the portal entry (i.e. lung) and distant tissue (i.e. liver), although the overall pulmonary damage were more striking compared to the hepatic outcomes.
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6
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Ishizaka T, Nagano K, Tasaki I, Tao H, Gao JQ, Harada K, Hirata K, Saito S, Tsujino H, Higashisaka K, Tsutsumi Y. Optimization and Evaluation of Pretreatment Method for sp-ICP-MS to Reveal the Distribution of Silver Nanoparticles in the Body. NANOSCALE RESEARCH LETTERS 2019; 14:180. [PMID: 31139947 PMCID: PMC6538717 DOI: 10.1186/s11671-019-3016-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 05/15/2019] [Indexed: 05/21/2023]
Abstract
The prevalent use of engineered nanoparticles (ENPs) has increased our exposure to these particles. The current available analytical techniques fail to simultaneously quantify and analyze the physical properties of ENPs in biological tissues. Therefore, new methods are required to evaluate the exposure conditions to ENPs. Single particle inductively coupled plasma-mass spectrometry (sp-ICP-MS) is an attractive approach that can perform quantitative and qualitative analyses of ENPs. However, the application of this approach for biological samples is limited because of the lack of pretreatment methods for effectively recovering ENPs from biological tissues. In this study, we evaluated various pretreatment methods and identified the optimal pretreatment conditions for sp-ICP-MS analyses of ENPs in biological tissues using silver nanoparticles (nAg) as a model. We screened five reagents as pretreatment solvents (sodium hydroxide, tetramethylammonium hydroxide, nitric acid, hydrochloric acid, and proteinase K). Our results showed that treatment with sodium hydroxide was optimal for detecting nAg in the mouse liver. Moreover, this pretreatment method can be applied to other organs, such as the heart, lung, spleen, and kidney. Finally, we evaluated the applicability of this method by analyzing the quantity and physical properties of silver in the mouse blood and liver, after intravenous administration of nAg or silver ion. Our sp-ICP-MS method revealed that nAg administered into the blood was partially ionized and tended to be distributed in the particle form (approximately 80%) in the liver and in ionic form (approximately 95%) in the blood. In conclusion, we optimized pretreatment strategies for sp-ICP-MS evaluation of ENPs in biological tissues and demonstrated its applicability by evaluating the changes in the physical properties of nAg in the liver and blood. We also showed that partial changes from the particle form to the ionic form of nAg influences their kinetics and distribution when administered to mice.
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Affiliation(s)
- Takuya Ishizaka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Kazuya Nagano
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871 Japan
- Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Ikkei Tasaki
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Hong Tao
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Jian-Qing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058 People’s Republic of China
| | - Kazuo Harada
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871 Japan
- Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Kazumasa Hirata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Shigeru Saito
- Graduate School of Medicine and Pharmaceutical Science, University of Toyama, 2630, Sugitani, Toyama-shi, Toyama, 930-0194 Japan
- Toyama University Hospital, University of Toyama, 2630, Sugitani, Toyama-shi, Toyama, 930-0194 Japan
| | - Hirofumi Tsujino
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Kazuma Higashisaka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871 Japan
- Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871 Japan
| | - Yasuo Tsutsumi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871 Japan
- Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871 Japan
- The Center for Advanced Medical Engineering and Informatics, Osaka University, 1-6, Yamadaoka, Suita, Osaka, 565-0871 Japan
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7
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Abstract
Silver is added to an array of commercially available healthcare products including wound dressings. However, overuse of silver is being raised as a potential health concern due to the possible selection of tolerant or resistant bacteria and as a factor that may induce cross resistance to antibiotics. To date, there are only a limited number of studies that have documented evidence of silver resistance in bacteria isolated from medical situations. These studies have indicated low levels of silver resistance in bacteria. However, in comparison to antibiotics, only a small number of studies have been undertaken to investigate silver resistance. It is clear that more studies are required to confirm the most effective therapeutic levels of silver that are needed to kill microbes. In addition, it is probable that sub-therapeutic levels of silver may potentially select for enhanced microbial tolerance. Nevertheless, to date, there still remains very little evidence that silver resistance is a growing health concern in wound care; more studies are clearly needed to substantiate this concern, which has not been observed clinically to any major degree. The issue of biofilm tolerance to silver is more complicated and data on the effect of silver on biofilms is sparse at present.
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Affiliation(s)
- Steven L Percival
- a R&D Department, Centre of Excellence in Biofilm Science (CEBS) , 5D Health Protection Group Ltd , Liverpool Bio-Innovation Hub , Liverpool , UK
| | - Anne-Marie Salisbury
- a R&D Department, Centre of Excellence in Biofilm Science (CEBS) , 5D Health Protection Group Ltd , Liverpool Bio-Innovation Hub , Liverpool , UK
| | - Rui Chen
- a R&D Department, Centre of Excellence in Biofilm Science (CEBS) , 5D Health Protection Group Ltd , Liverpool Bio-Innovation Hub , Liverpool , UK
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8
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Mukherji S, Bharti S, Shukla G, Mukherji S. Synthesis and characterization of size- and shape-controlled silver nanoparticles. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2017-0082] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Silver nanoparticles (AgNPs) have application potential in diverse areas ranging from wound healing to catalysis and sensing. The possibility for optimizing the physical, chemical and optical properties for an application by tailoring the shape and size of silver nanoparticles has motived much research on methods for synthesis of size- and shape-controlled AgNPs. The shape and size of AgNPs are reported to vary depending on choice of the Ag precursor salt, reducing agent, stabilizing agent and on the synthesis technique used. This chapter provides a detailed review on various synthesis approaches that may be used for synthesis of AgNPs of desired size and shape. Silver nanoparticles may be synthesized using diverse routes, including, physical, chemical, photochemical, biological and microwave -based techniques. Synthesis of AgNPs of diverse shapes, such as, nanospheres, nanorods, nanobars, nanoprisms, decahedral nanoparticles and triangular bipyramids is also discussed for chemical-, photochemical- and microwave-based synthesis routes. The choice of chemicals used for reduction and stabilization of nanoparticles is found to influence their shape and size significantly. A discussion on the mechanism of synthesis of AgNPs through nucleation and growth processes is discussed for AgNPs of varying shape and sizes so as to provide an insight on the various synthesis routes. Techniques, such as, electron microscopy, spectroscopy, and crystallography that can be used for characterizing the AgNPs formed in terms of their shape, sizes, crystal structure and chemical composition are also discussed in this chapter.
Graphical Abstract:
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9
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Li X, Ke M, Zhang M, Peijnenburg WJGM, Fan X, Xu J, Zhang Z, Lu T, Fu Z, Qian H. The interactive effects of diclofop-methyl and silver nanoparticles on Arabidopsis thaliana: Growth, photosynthesis and antioxidant system. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 232:212-219. [PMID: 28931464 DOI: 10.1016/j.envpol.2017.09.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 07/31/2017] [Accepted: 09/11/2017] [Indexed: 05/15/2023]
Abstract
Diclofop-methyl (DM), a common post-emergence herbicide, is frequently used in agricultural production. Silver nanoparticles (AgNPs) are one of the most widely used nanoparticles, and as such, have been detected and monitored in several environmental systems. Here we investigated the interactive effects of DM and AgNPs on the physiological morphology, photosynthesis and antioxidant system of Arabidopsis thaliana. Our results demonstrated that a 1.0 mg/L DM treatment had no significant effect on the fresh weight of plant shoots and the content of total chlorophyll and anthocyanin. However, a 0.5 mg/L AgNPs treatment was found to significantly inhibit plant growth and chlorophyll synthesis, and was found to cause more severe oxidative damage in plants compared to the effects observed in a hydroponic suspension in which DM and AgNPs were jointly present. Meanwhile, the relative transcript levels of photosynthesis related genes (psbA, rbcL, pgrl1A and pgrl1B) in the combined group were found to be slightly increased compared to transcript levels in the AgNPs group, in order to maintain ATP generation at relatively normal levels in order to repair light damage. One explanation for these observed antagonistic effects was that the existence of DM affects the stability of AgNPs and reduced Ag+ release from AgNPs in the mixed solution. Thereupon, the Ag+-content was found to decrease in shoots and roots in the combined group by 15.2% and 9.4% respectively, compared to the AgNPs group. The coexistence of herbicides and nanomaterials in aquatic environments or soil systems will continue to exist due to their wide usages. Our current study highlights that the antagonistic effects between DM and AgNPs exerted a positive impact on A. thaliana growth.
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Affiliation(s)
- Xingxing Li
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Mingjing Ke
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Meng Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - W J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, 2300 RA Leiden, The Netherlands; National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, P.O. Box 1, Bilthoven, The Netherlands
| | - Xiaoji Fan
- College of Biotechnological and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Jiahui Xu
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhengwei Fu
- College of Biotechnological and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China.
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10
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Laux P, Tentschert J, Riebeling C, Braeuning A, Creutzenberg O, Epp A, Fessard V, Haas KH, Haase A, Hund-Rinke K, Jakubowski N, Kearns P, Lampen A, Rauscher H, Schoonjans R, Störmer A, Thielmann A, Mühle U, Luch A. Nanomaterials: certain aspects of application, risk assessment and risk communication. Arch Toxicol 2018; 92:121-141. [PMID: 29273819 PMCID: PMC5773666 DOI: 10.1007/s00204-017-2144-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 12/13/2017] [Indexed: 12/19/2022]
Abstract
Development and market introduction of new nanomaterials trigger the need for an adequate risk assessment of such products alongside suitable risk communication measures. Current application of classical and new nanomaterials is analyzed in context of regulatory requirements and standardization for chemicals, food and consumer products. The challenges of nanomaterial characterization as the main bottleneck of risk assessment and regulation are presented. In some areas, e.g., quantification of nanomaterials within complex matrices, the establishment and adaptation of analytical techniques such as laser ablation inductively coupled plasma mass spectrometry and others are potentially suited to meet the requirements. As an example, we here provide an approach for the reliable characterization of human exposure to nanomaterials resulting from food packaging. Furthermore, results of nanomaterial toxicity and ecotoxicity testing are discussed, with concluding key criteria such as solubility and fiber rigidity as important parameters to be considered in material development and regulation. Although an analysis of the public opinion has revealed a distinguished rating depending on the particular field of application, a rather positive perception of nanotechnology could be ascertained for the German public in general. An improvement of material characterization in both toxicological testing as well as end-product control was concluded as being the main obstacle to ensure not only safe use of materials, but also wide acceptance of this and any novel technology in the general public.
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Affiliation(s)
- Peter Laux
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany.
| | - Jutta Tentschert
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | - Christian Riebeling
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | - Albert Braeuning
- Department of Food Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | - Otto Creutzenberg
- Department of Inhalation Toxicology, Fraunhofer-Institute for Toxicology and Experimental Medicine (ITEM), Nikolai Fuchs Strasse 1, 30625, Hannover, Germany
| | - Astrid Epp
- Department of Risk Communication, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | - Valérie Fessard
- Laboratoire de Fougères, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), 10B Rue Claude Bourgelat, 35306, Fougères Cedex, France
| | - Karl-Heinz Haas
- Fraunhofer Institute for Silicate Research ISC, Neunerplatz 2, 97082, Würzburg, Germany
| | - Andrea Haase
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | - Kerstin Hund-Rinke
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Auf Dem Aberg 1, 57392, Schmallenberg, Germany
| | - Norbert Jakubowski
- Division 1.1 Inorganic Trace Analysis, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489, Berlin, Germany
| | - Peter Kearns
- OECD Environment, Health and Safety Division 2, rue Andre-Pascal, 75775, Paris Cedex 16, France
| | - Alfonso Lampen
- Department of Food Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
| | - Hubert Rauscher
- Joint Research Centre (JRC) of the European Commission, Directorate Health, Consumers and Reference Materials, Via E. Fermi, 2749, 21027, Ispra, Italy
| | - Reinhilde Schoonjans
- Scientific Committee and Emerging Risks Unit, European Food Safety Authority (EFSA), Via Carlo Magno 1a, 43126, Parma, Italy
| | - Angela Störmer
- Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Strasse 35, 85354, Freising, Germany
| | - Axel Thielmann
- Fraunhofer Institute for Systems and Innovation Research ISI, Breslauer Strasse 48, 76139, Karlsruhe, Germany
| | - Uwe Mühle
- Fraunhofer Institute for Ceramic Technologies and Systems IKTS, Winterbergstr. 28, 01277, Dresden, Germany
| | - Andreas Luch
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany
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11
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Roy Chowdhury N, Hopp I, Zilm P, Murray P, Vasilev K. Silver nanoparticle modified surfaces induce differentiation of mouse kidney-derived stem cells. RSC Adv 2018; 8:20334-20340. [PMID: 35541676 PMCID: PMC9080803 DOI: 10.1039/c8ra02145g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 05/29/2018] [Indexed: 12/25/2022] Open
Abstract
In this paper, we interrogate the influence of silver nanoparticle (AgNPs)-based model surfaces on mouse kidney-derived stem cells (mKSCs) differentiation. The widespread use of silver in biomedical and consumer products requires understanding of this element's effect on kidney cells. Moreover, the potential for using stem cells in drug discovery require methods to direct their differentiation to specialized cells. Hence, we generated coated model substrates containing different concentrations of surface immobilized AgNPs, and used them to evaluate properties and functions of mKSCs. Initially, mKSCs exhibited reduced viability on higher silver containing surfaces. However, longer culture periods assisted mKSCs to recover. Greater degree of cell spreading and arborization led by AgNPs, suggest podocyte differentiation. Proximal tubule cell marker's expression revealed differentiation to the specific lineage. Although the exact mechanism underpinning these findings require significant future efforts, this study demonstrate silver's capacity to stimulate mKSC differentiation, which may provide opportunities for drug screenings. 2-Methyl-2-oxazoline plasma polymerized silver nanoparticles containing coatings are not toxic towards mouse kidney derived stem cells (mKSCs) and regulate mKSCs differentiation.![]()
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Affiliation(s)
| | - Isabel Hopp
- Institute of Translational Medicine
- University of Liverpool
- Liverpool
- UK
| | - Peter Zilm
- Microbiology Laboratory
- Adelaide Dental School
- The University of Adelaide
- Adelaide
- Australia
| | - Patricia Murray
- Institute of Translational Medicine
- University of Liverpool
- Liverpool
- UK
| | - Krasimir Vasilev
- School of Engineering
- University of South Australia
- Mawson Lakes
- Australia
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12
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Roda E, Barni S, Milzani A, Dalle-Donne I, Colombo G, Coccini T. Single Silver Nanoparticle Instillation Induced Early and Persisting Moderate Cortical Damage in Rat Kidneys. Int J Mol Sci 2017; 18:ijms18102115. [PMID: 28994738 PMCID: PMC5666797 DOI: 10.3390/ijms18102115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 09/25/2017] [Accepted: 09/28/2017] [Indexed: 12/19/2022] Open
Abstract
The potential toxic effects of silver nanoparticles (AgNPs), administered by a single intratracheal instillation (i.t), was assessed in a rat model using commercial physico-chemical characterized nanosilver. Histopathological changes, overall toxic response and oxidative stress (kidney and plasma protein carbonylation), paralleled by ultrastructural observations (TEM), were evaluated to examine renal responses 7 and 28 days after i.t. application of a low AgNP dose (50 µg/rat), compared to an equivalent dose of ionic silver (7 µg AgNO3/rat). The AgNPs caused moderate renal histopathological and ultrastructural alteration, in a region-specific manner, being the cortex the most affected area. Notably, the bulk AgNO3, caused similar adverse effects with a slightly more marked extent, also triggering apoptotic phenomena. Specifically, 7 days after exposure to both AgNPs and AgNO3, dilatation of the intercapillary and peripheral Bowman’s space was observed, together with glomerular shrinkage. At day 28, these effects still persisted after both treatments, accompanied by an additional injury involving the vascular component of the mesangium, with interstitial micro-hemorrhages. Neither AgNPs nor AgNO3 induced oxidative stress effects in kidneys and plasma, at either time point. The AgNP-induced moderate renal effects indicate that, despite their benefits, novel AgNPs employed in consumer products need exhaustive investigation to ensure public health safety.
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Affiliation(s)
- Elisa Roda
- Laboratory of Clinical & Experimental Toxicology and Poison Control Centre and National Toxicology Information Centre, Toxicology Unit, ICS Maugeri SpA-Benefit Corporation, IRCCS Pavia, via Maugeri 10, 27100 Pavia, Italy.
- Department of Biology and Biotechnology "L. Spallanzani", Laboratory of Cell Biology and Neurobiology, University of Pavia, via Ferrata 9, 27100 Pavia, Italy.
| | - Sergio Barni
- Department of Biology and Biotechnology "L. Spallanzani", Laboratory of Cell Biology and Neurobiology, University of Pavia, via Ferrata 9, 27100 Pavia, Italy.
| | - Aldo Milzani
- Department of Biosciences, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy.
| | - Isabella Dalle-Donne
- Department of Biosciences, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy.
| | - Graziano Colombo
- Department of Biosciences, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy.
| | - Teresa Coccini
- Laboratory of Clinical & Experimental Toxicology and Poison Control Centre and National Toxicology Information Centre, Toxicology Unit, ICS Maugeri SpA-Benefit Corporation, IRCCS Pavia, via Maugeri 10, 27100 Pavia, Italy.
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13
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High frequency of silver resistance genes in invasive isolates of Enterobacter and Klebsiella species. J Hosp Infect 2017; 96:256-261. [DOI: 10.1016/j.jhin.2017.04.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/02/2017] [Indexed: 11/19/2022]
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Sass J, Heine L, Hwang N. Use of a modified GreenScreen tool to conduct a screening-level comparative hazard assessment of conventional silver and two forms of nanosilver. Environ Health 2016; 15:105. [PMID: 27825359 PMCID: PMC5101654 DOI: 10.1186/s12940-016-0188-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 10/26/2016] [Indexed: 05/02/2023]
Abstract
BACKGROUND Increased concern for potential health and environmental impacts of chemicals, including nanomaterials, in consumer products is driving demand for greater transparency regarding potential risks. Chemical hazard assessment is a powerful tool to inform product design, development and procurement and has been integrated into alternative assessment frameworks. The extent to which assessment methods originally designed for conventionally-sized materials can be used for nanomaterials, which have size-dependent physical and chemical properties, have not been well established. We contracted with a certified GreenScreen profiler to conduct three GreenScreen hazard assessments, for conventional silver and two forms of nanosilver. The contractor summarized publicly available literature, and used defined GreenScreen hazard criteria and expert judgment to assign and report hazard classification levels, along with indications of confidence in those assignments. Where data were not available, a data gap (DG) was assigned. Using the individual endpoint scores, an aggregated benchmark score (BM) was applied. RESULTS Conventional silver and low-soluble nanosilver were assigned the highest possible hazard score and a silica-silver nanocomposite called AGS-20 could not be scored due to data gaps. AGS-20 is approved for use as antimicrobials by the US Environmental Protection Agency. CONCLUSIONS An existing method for chemical hazard assessment and communication can be used - with minor adaptations- to compare hazards across conventional and nano forms of a substance. The differences in data gaps and in hazard profiles support the argument that each silver form should be considered unique and subjected to hazard assessment to inform regulatory decisions and decisions about product design and development. A critical limitation of hazard assessments for nanomaterials is the lack of nano-specific hazard data - where data are available, we demonstrate that existing hazard assessment systems can work. The work is relevant for risk assessors and regulators. We recommend that regulatory agencies and others require more robust data sets on each novel nanomaterial before granting market approval.
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Affiliation(s)
- Jennifer Sass
- Natural Resources Defense Council and George Washington University Milken Institute School of Public Health, 1152 15th St NW, Suite 300, Washington DC, 20005 USA
| | - Lauren Heine
- Northwest Green Chemistry and Lauren Heine Group LLC, Spokane, WA USA
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Latvala S, Hedberg J, Möller L, Odnevall Wallinder I, Karlsson HL, Elihn K. Optimization of an air-liquid interface exposure system for assessing toxicity of airborne nanoparticles. J Appl Toxicol 2016; 36:1294-301. [PMID: 26935862 PMCID: PMC5069579 DOI: 10.1002/jat.3304] [Citation(s) in RCA: 15] [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] [Received: 11/18/2015] [Revised: 12/28/2015] [Accepted: 01/13/2016] [Indexed: 11/17/2022]
Abstract
The use of refined toxicological methods is currently needed for characterizing the risks of airborne nanoparticles (NPs) to human health. To mimic pulmonary exposure, we have developed an air-liquid interface (ALI) exposure system for direct deposition of airborne NPs on to lung cell cultures. Compared to traditional submerged systems, this allows more realistic exposure conditions for characterizing toxicological effects induced by airborne NPs. The purpose of this study was to investigate how the deposition of silver NPs (AgNPs) is affected by different conditions of the ALI system. Additionally, the viability and metabolic activity of A549 cells was studied following AgNP exposure. Particle deposition increased markedly with increasing aerosol flow rate and electrostatic field strength. The highest amount of deposited particles (2.2 μg cm(-2) ) at cell-free conditions following 2 h exposure was observed for the highest flow rate (390 ml min(-1) ) and the strongest electrostatic field (±2 kV). This was estimated corresponding to deposition efficiency of 94%. Cell viability was not affected after 2 h exposure to clean air in the ALI system. Cells exposed to AgNPs (0.45 and 0.74 μg cm(-2) ) showed significantly (P < 0.05) reduced metabolic activities (64 and 46%, respectively). Our study shows that the ALI exposure system can be used for generating conditions that were more realistic for in vitro exposures, which enables improved mechanistic and toxicological studies of NPs in contact with human lung cells.Copyright © 2016 The Authors Journal of Applied Toxicology Published by John Wiley & Sons Ltd.
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Affiliation(s)
- Siiri Latvala
- Department of Environmental Science and Analytical Chemistry, Atmospheric Science UnitStockholm UniversitySE‐106 91StockholmSweden
| | - Jonas Hedberg
- Division of Surface and Corrosion Science, School of Chemical Science and EngineeringKTH Royal Institute of TechnologySE‐100 44StockholmSweden
| | - Lennart Möller
- Department of Biosciences and Nutrition, Unit for Analytical ToxicologyKarolinska InstituteSE‐141 83HuddingeSweden
| | - Inger Odnevall Wallinder
- Division of Surface and Corrosion Science, School of Chemical Science and EngineeringKTH Royal Institute of TechnologySE‐100 44StockholmSweden
| | - Hanna L. Karlsson
- Division of Biochemical ToxicologyKarolinska Institute, Institute of Environmental MedicineSE‐171 77StockholmSweden
| | - Karine Elihn
- Department of Environmental Science and Analytical Chemistry, Atmospheric Science UnitStockholm UniversitySE‐106 91StockholmSweden
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Williams KM, Gokulan K, Cerniglia CE, Khare S. Size and dose dependent effects of silver nanoparticle exposure on intestinal permeability in an in vitro model of the human gut epithelium. J Nanobiotechnology 2016; 14:62. [PMID: 27465730 PMCID: PMC4963959 DOI: 10.1186/s12951-016-0214-9] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 07/11/2016] [Indexed: 12/12/2022] Open
Abstract
Background The antimicrobial activity of silver nanoparticles (AgNP) has led to interest in their use in consumer products such as food contact materials, utensils, and storage containers. Incorporation of these materials into items intended for food processing and storage suggests that consumer use of these products could result in gastrointestinal exposure to AgNP, should the nanoparticles migrate from the product. The health impact of AgNP exposure is unknown, especially effects related to intestinal epithelial permeability and barrier function. This study examined the effects of AgNP exposure of different sizes (10, 20, 75 and 110 nm) and doses (20 and 100 µg/mL) on the permeability of T84 human colonic epithelial cells, which serve as an in vitro model of the human gut epithelium. Results Results showed that effects of AgNP on the T84 epithelial cells were size- and dose-dependent, with the 10 nm AgNP causing the most significant changes. Changes in permeability of the epithelial cell monolayer, as measured by transepithelial electrical resistance, after exposure to 10 nm AgNP were most dramatic at the highest dose (100 µg/mL), but also observed at the lower dose (20 µg/mL). AgNP could be visualized inside cells using transmission electron microscopy and silver was detected in basal wells using inductively coupled plasma-mass spectrometry. Exposure to AgNP significantly affected the expression of genes involved in anchoring tight junctions, cellular proliferation and signaling, endocytosis, and cell–cell adhesion, with the 10 nm AgNP having the greatest effect. Conclusions The results of this study show that small-size AgNP have significant effects on intestinal permeability in an in vitro model of the human gastrointestinal epithelium. Such effects have the potential to compromise the integrity of the intestinal epithelium and this disruption of barrier function could have health consequences for the gastrointestinal tract. Electronic supplementary material The online version of this article (doi:10.1186/s12951-016-0214-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Katherine M Williams
- Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, 3900 NCTR Rd, Jefferson, AR, 72079, USA
| | - Kuppan Gokulan
- Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, 3900 NCTR Rd, Jefferson, AR, 72079, USA
| | - Carl E Cerniglia
- Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, 3900 NCTR Rd, Jefferson, AR, 72079, USA
| | - Sangeeta Khare
- Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, 3900 NCTR Rd, Jefferson, AR, 72079, USA.
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Das J, Choi YJ, Song H, Kim JH. Potential toxicity of engineered nanoparticles in mammalian germ cells and developing embryos: treatment strategies and anticipated applications of nanoparticles in gene delivery. Hum Reprod Update 2016; 22:588-619. [DOI: 10.1093/humupd/dmw020] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 05/16/2016] [Indexed: 01/09/2023] Open
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Shih SJ, Chen CY, Lin YC, Lee JC, Chung RJ. Investigation of bioactive and antibacterial effects of graphene oxide-doped bioactive glass. ADV POWDER TECHNOL 2016. [DOI: 10.1016/j.apt.2016.04.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Weldon BA, M. Faustman E, Oberdörster G, Workman T, Griffith WC, Kneuer C, Yu IJ. Occupational exposure limit for silver nanoparticles: considerations on the derivation of a general health-based value. Nanotoxicology 2016; 10:945-56. [DOI: 10.3109/17435390.2016.1148793] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Brittany A. Weldon
- Institute for Risk Analysis and Risk Communication, University of Washington, Seattle, WA, USA,
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA,
| | - Elaine M. Faustman
- Institute for Risk Analysis and Risk Communication, University of Washington, Seattle, WA, USA,
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA,
| | - Günter Oberdörster
- Department of Environmental Medicine, University of Rochester, Rochester, NY, USA,
| | - Tomomi Workman
- Institute for Risk Analysis and Risk Communication, University of Washington, Seattle, WA, USA,
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA,
| | - William C. Griffith
- Institute for Risk Analysis and Risk Communication, University of Washington, Seattle, WA, USA,
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA,
| | - Carsten Kneuer
- Federal Institute for Risk Assessment, Berlin, Germany, and
| | - Il Je Yu
- Institute of Nanoproduct Safety Research, Hoseo University, Asan, Korea
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Recordati C, De Maglie M, Bianchessi S, Argentiere S, Cella C, Mattiello S, Cubadda F, Aureli F, D'Amato M, Raggi A, Lenardi C, Milani P, Scanziani E. Tissue distribution and acute toxicity of silver after single intravenous administration in mice: nano-specific and size-dependent effects. Part Fibre Toxicol 2016; 13:12. [PMID: 26926244 PMCID: PMC4772516 DOI: 10.1186/s12989-016-0124-x] [Citation(s) in RCA: 161] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 02/22/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Silver nanoparticles (AgNPs) are an important class of nanomaterials used as antimicrobial agents for a wide range of medical and industrial applications. However toxicity of AgNPs and impact of their physicochemical characteristics in in vivo models still need to be comprehensively characterized. The aim of this study was to investigate the effect of size and coating on tissue distribution and toxicity of AgNPs after intravenous administration in mice, and compare the results with those obtained after silver acetate administration. METHODS Male CD-1(ICR) mice were intravenously injected with AgNPs of different sizes (10 nm, 40 nm, 100 nm), citrate-or polyvinylpyrrolidone-coated, at a single dose of 10 mg/kg bw. An equivalent dose of silver ions was administered as silver acetate. Mice were euthanized 24 h after the treatment, and silver quantification by ICP-MS and histopathology were performed on spleen, liver, lungs, kidneys, brain, and blood. RESULTS For all particle sizes, regardless of their coating, the highest silver concentrations were found in the spleen and liver, followed by lung, kidney, and brain. Silver concentrations were significantly higher in the spleen, lung, kidney, brain, and blood of mice treated with 10 nm AgNPs than those treated with larger particles. Relevant toxic effects (midzonal hepatocellular necrosis, gall bladder hemorrhage) were found in mice treated with 10 nm AgNPs, while in mice treated with 40 nm and 100 nm AgNPs lesions were milder or negligible, respectively. In mice treated with silver acetate, silver concentrations were significantly lower in the spleen and lung, and higher in the kidney than in mice treated with 10 nm AgNPs, and a different target organ of toxicity was identified (kidney). CONCLUSIONS Administration of the smallest (10 nm) nanoparticles resulted in enhanced silver tissue distribution and overt hepatobiliary toxicity compared to larger ones (40 and 100 nm), while coating had no relevant impact. Distinct patterns of tissue distribution and toxicity were observed after silver acetate administration. It is concluded that if AgNPs become systemically available, they behave differently from ionic silver, exerting distinct and size-dependent effects, strictly related to the nanoparticulate form.
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Affiliation(s)
| | - Marcella De Maglie
- Fondazione Filarete, 20139, Milan, Italy.
- Dipartimento di Scienze Veterinarie e Sanità Pubblica (DIVET), Università degli Studi di Milano, 20133, Milan, Italy.
| | | | | | - Claudia Cella
- Fondazione Filarete, 20139, Milan, Italy.
- Dipartimento di Fisica, Università degli Studi di Milano, 20133, Milan, Italy.
| | - Silvana Mattiello
- Dipartimento di Scienze Veterinarie e Sanità Pubblica (DIVET), Università degli Studi di Milano, 20133, Milan, Italy.
| | - Francesco Cubadda
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità - National Health Institute, 00161, Rome, Italy.
| | - Federica Aureli
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità - National Health Institute, 00161, Rome, Italy.
| | - Marilena D'Amato
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità - National Health Institute, 00161, Rome, Italy.
| | - Andrea Raggi
- Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità - National Health Institute, 00161, Rome, Italy.
| | - Cristina Lenardi
- Fondazione Filarete, 20139, Milan, Italy.
- Dipartimento di Fisica, Università degli Studi di Milano, 20133, Milan, Italy.
- Centro Interdisciplinare Materiali e Interfacce Nanostrutturati (CIMAINA), Università degli Studi di Milano, 20133, Milan, Italy.
| | - Paolo Milani
- Fondazione Filarete, 20139, Milan, Italy.
- Dipartimento di Fisica, Università degli Studi di Milano, 20133, Milan, Italy.
- Centro Interdisciplinare Materiali e Interfacce Nanostrutturati (CIMAINA), Università degli Studi di Milano, 20133, Milan, Italy.
| | - Eugenio Scanziani
- Fondazione Filarete, 20139, Milan, Italy.
- Dipartimento di Scienze Veterinarie e Sanità Pubblica (DIVET), Università degli Studi di Milano, 20133, Milan, Italy.
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Wigger H, Hackmann S, Zimmermann T, Köser J, Thöming J, von Gleich A. Influences of use activities and waste management on environmental releases of engineered nanomaterials. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 535:160-171. [PMID: 25728395 DOI: 10.1016/j.scitotenv.2015.02.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 02/12/2015] [Accepted: 02/12/2015] [Indexed: 06/04/2023]
Abstract
Engineered nanomaterials (ENM) offer enhanced or new functionalities and properties that are used in various products. This also entails potential environmental risks in terms of hazard and exposure. However, hazard and exposure assessment for ENM still suffer from insufficient knowledge particularly for product-related releases and environmental fate and behavior. This study therefore analyzes the multiple impacts of the product use, the properties of the matrix material, and the related waste management system (WMS) on the predicted environmental concentration (PEC) by applying nine prospective life cycle release scenarios based on reasonable assumptions. The products studied here are clothing textiles treated with silver nanoparticles (AgNPs), since they constitute a controversial application. Surprisingly, the results show counter-intuitive increases by a factor of 2.6 in PEC values for the air compartment in minimal AgNP release scenarios. Also, air releases can shift from washing to wearing activity; their associated release points may shift accordingly, potentially altering release hot spots. Additionally, at end-of-life, the fraction of AgNP-residues contained on exported textiles can be increased by 350% when assuming short product lifespans and globalized WMS. It becomes evident that certain combinations of use activities, matrix material characteristics, and WMS can influence the regional PEC by several orders of magnitude. Thus, in the light of the findings and expected ENM market potential, future assessments should consider these aspects to derive precautionary design alternatives and to enable prospective global and regional risk assessments.
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Affiliation(s)
- Henning Wigger
- Faculty of Production Engineering, Department of Technological Design and Development, University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany.
| | - Stephan Hackmann
- UFT Center for Environmental Research and Sustainable Technology, Department of General and Theoretical Ecology, University of Bremen, Leobener Str., 28359 Bremen, Germany
| | - Till Zimmermann
- Faculty of Production Engineering, Department of Technological Design and Development, University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany; ARTEC - Research Center for Sustainability Studies, Enrique-Schmidt-Str. 7, 28359 Bremen, Germany
| | - Jan Köser
- UFT Center for Environmental Research and Sustainable Technology, Department of Sustainable Chemistry, University of Bremen, Leobener Str., 28359 Bremen, Germany
| | - Jorg Thöming
- UFT Center for Environmental Research and Sustainable Technology, Department of Sustainable Chemical Engineering, University of Bremen, Leobener Str., 28359 Bremen, Germany
| | - Arnim von Gleich
- Faculty of Production Engineering, Department of Technological Design and Development, University of Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany; ARTEC - Research Center for Sustainability Studies, Enrique-Schmidt-Str. 7, 28359 Bremen, Germany
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22
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Voelker D, Schlich K, Hohndorf L, Koch W, Kuehnen U, Polleichtner C, Kussatz C, Hund-Rinke K. Approach on environmental risk assessment of nanosilver released from textiles. ENVIRONMENTAL RESEARCH 2015; 140:661-72. [PMID: 26073205 DOI: 10.1016/j.envres.2015.05.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/22/2015] [Accepted: 05/11/2015] [Indexed: 05/14/2023]
Abstract
Based on the increased utilization of nanosilver (silver nanomaterials=AgNM) as antibacterial agent, there is the strong need to assess the potential environmental implication associated with its new application areas. In this study an exemplary environmental risk assessment (ERA) of AgNM applied in textiles was performed. Environmental exposure scenarios (via municipal sewage treatment plant (STP)) with wastewater supply from domestic homes) were developed for three different types of textiles equipped with AgNM. Based on these scenarios predicted environmental concentrations (PECs) were deduced for STPs and for the environmental compartments surface water, sediment as well as soil. These PECs were related to PNECs (predicted no effect concentrations). PNECs were deduced from results of ecotoxicity tests of a selected AgNM (NM-300K). Data on ecotoxicology were derived from various tests with activated sludge, cyanobacteria, algae, daphnids, fish, duckweed, macrophytes, chironomids, earthworms, terrestrial plants as well as soil microorganisms. Emission data for the AgNM NM-300K from textiles were derived from washing experiments. The performed ERA was based on the specifications defined in the ECHA Guidances on information requirements and chemical safety assessment. Based on the chosen scenarios and preconditions, no environmental risk of the AgNM NM-300K released from textiles was detected. Under conservative assumptions a risk quotient for surface water close to 1 indicated that the aquatic compartment may be affected by an increased emission of AgNM to the environment due to the high sensitivity of aquatic organisms to silver. Based on the successful retention of AgNM in the sewage sludge and the still ongoing continual application of sewage sludge on farmland it is recommended to introduce a threshold for total silver content in sewage sludge into the respective regulations. Regarding potential risk mitigation measures, it is emphasized to preferably directly introduce AgNM into the textile fiber since this will strongly minimize the release of AgNM during washing. If this is not possible due to technical limitations or other reasons, the introduction of a threshold level controlling the release of AgNM from textiles is suggested. It has to be noted that this study is a case study which is only valid for the investigated NM-300K and its potential application in textiles.
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Affiliation(s)
- Doris Voelker
- Federal Environment Agency Germany, Section IV 2.2, Wörlitzer Platz 1, 06844 Dessau-Rosslau, Germany.
| | - Karsten Schlich
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Department of Ecotoxicology, Auf dem Aberg 1, 57392 Schmallenberg, Germany
| | - Lars Hohndorf
- Federal Environment Agency Germany, Section IV 2.2, Wörlitzer Platz 1, 06844 Dessau-Rosslau, Germany
| | - Wolfgang Koch
- Federal Environment Agency Germany, Section IV 2.2, Wörlitzer Platz 1, 06844 Dessau-Rosslau, Germany
| | - Ute Kuehnen
- Federal Environment Agency Germany, Section IV 2.2, Wörlitzer Platz 1, 06844 Dessau-Rosslau, Germany
| | - Christian Polleichtner
- Federal Environment Agency Germany, Section IV 2.4, Schichauweg 58, 12307 Berlin, Germany
| | - Carola Kussatz
- Federal Environment Agency Germany, Section IV 2.4, Schichauweg 58, 12307 Berlin, Germany
| | - Kerstin Hund-Rinke
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Department of Ecotoxicology, Auf dem Aberg 1, 57392 Schmallenberg, Germany
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Molling JW, Seezink JW, Teunissen BE, Muijrers-Chen I, Borm PJ. Comparative performance of a panel of commercially available antimicrobial nanocoatings in Europe. Nanotechnol Sci Appl 2014; 7:97-104. [PMID: 25404853 PMCID: PMC4230231 DOI: 10.2147/nsa.s70782] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background Bacterial resistance against the classic antibiotics is posing an increasing challenge for the prevention and treatment of infections in health care environments. The introduction of antimicrobial nanocoatings with active ingredients provides alternative measures for active killing of microorganisms, through a preventive hygiene approach. Purpose The purpose of this study was to investigate the antimicrobial activity of a panel of antimicrobial coatings available on the European market. Methods A comparative, biased selection of commercially available antimicrobial coatings was tested for antimicrobial efficiency. Suppliers were contacted to deliver their coatings on glass and/or stainless steel substrates. In total, 23 coatings from eleven suppliers were received, which were investigated for their effect on the growth of Escherichia coli, using the International Organization for Standardization (ISO) 22196 protocol. Results The majority of nanomaterial-containing coatings (n=13) contained nanosilver (n=12), while only one had photocatalytic TiO2 as the active particle. The differences in antimicrobial activity among all of the coatings, expressed as log reduction values, varied between 1.3 and 6.6, while the variation within the nanomaterial-based group was between 2.0 and 6.2. Although nanosilver coatings were on average very effective in reducing the number of viable bacteria after challenge, the strongest log reduction (6.6) was seen with a coating that has immobilized, covalently bound quaternary ammonium salt in its matrix. Besides these two compounds, coatings containing TiO2, poly(dimethylsiloxane), triclosan, or zinc pyrithione evoked 100% killing of E. coli. Conclusion Our findings indicate that nanosilver dominates the nanoparticle-based coatings and performs adequately. However, considering the unknowns in relation to ecotoxicological emission and effects, it needs further consideration before widespread application into different environments.
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Affiliation(s)
- Johan W Molling
- Zuyd University of Applied Sciences, Heerlen, the Netherlands
| | | | | | | | - Paul Ja Borm
- Zuyd University of Applied Sciences, Heerlen, the Netherlands
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Hammad S, Abdou AM, Omar MA. Gebel-criteria for risk assessment in nanotoxicology. EXCLI JOURNAL 2014; 13:1196-7. [PMID: 26417332 PMCID: PMC4464467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 10/29/2014] [Indexed: 11/04/2022]
Affiliation(s)
- Seddik Hammad
- Department of Forensic Medicine and Veterinary Toxicology, Faculty of Veterinary Medicine, South Valley University, 83523 Qena/Egypt,*To whom correspondence should be addressed: Seddik Hammad, , E-mail:
| | - Ahmed M. Abdou
- Department of Forensic Medicine and Veterinary Toxicology, Faculty of Veterinary Medicine, South Valley University, 83523 Qena/Egypt
| | - Mosaab A. Omar
- Department of Parasitology, Faculty of Veterinary Medicine, South Valley University, 83523 Qena/Egypt
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Royce SG, Mukherjee D, Cai T, Xu SS, Alexander JA, Mi Z, Calderon L, Mainelis G, Lee K, Lioy PJ, Tetley TD, Chung KF, Zhang J, Georgopoulos PG. Modeling Population Exposures to Silver Nanoparticles Present in Consumer Products. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 2014; 16:2724. [PMID: 25745354 PMCID: PMC4346165 DOI: 10.1007/s11051-014-2724-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Exposures of the general population to manufactured nanoparticles (MNPs) are expected to keep rising due to increasing use of MNPs in common consumer products (PEN 2014). The present study focuses on characterizing ambient and indoor population exposures to silver MNPs (nAg). For situations where detailed, case-specific exposure-related data are not available, as in the present study, a novel tiered modeling system, Prioritization/Ranking of Toxic Exposures with GIS (Geographic Information System) Extension (PRoTEGE), has been developed: it employs a product Life Cycle Analysis (LCA) approach coupled with basic human Life Stage Analysis (LSA) to characterize potential exposures to chemicals of current and emerging concern. The PRoTEGE system has been implemented for ambient and indoor environments, utilizing available MNP production, usage, and properties databases, along with laboratory measurements of potential personal exposures from consumer spray products containing nAg. Modeling of environmental and microenvironmental levels of MNPs employs Probabilistic Material Flow Analysis combined with product LCA to account for releases during manufacturing, transport, usage, disposal, etc. Human exposure and dose characterization further employs screening Microenvironmental Modeling and Intake Fraction methods combined with LSA for potentially exposed populations, to assess differences associated with gender, age, and demographics. Population distributions of intakes, estimated using the PRoTEGE framework, are consistent with published individual-based intake estimates, demonstrating that PRoTEGE is capable of capturing realistic exposure scenarios for the US population. Distributions of intakes are also used to calculate biologically-relevant population distributions of uptakes and target tissue doses through human airway dosimetry modeling that takes into account product MNP size distributions and age-relevant physiological parameters.
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Affiliation(s)
- Steven G. Royce
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Environmental and Occupational Medicine, Rutgers University-Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Dwaipayan Mukherjee
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Environmental and Occupational Medicine, Rutgers University-Robert Wood Johnson Medical School, Piscataway, NJ, USA
- Department of Chemical & Biochemical Engineering, Rutgers University, Piscataway, NJ, USA
| | - Ting Cai
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Environmental and Occupational Medicine, Rutgers University-Robert Wood Johnson Medical School, Piscataway, NJ, USA
- Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, USA
| | - Shu S. Xu
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Environmental and Occupational Medicine, Rutgers University-Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Jocelyn A. Alexander
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Environmental and Occupational Medicine, Rutgers University-Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Zhongyuan Mi
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Environmental and Occupational Medicine, Rutgers University-Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Leonardo Calderon
- Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, USA
| | - Gediminas Mainelis
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, USA
| | - KiBum Lee
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ, USA
| | - Paul J. Lioy
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Environmental and Occupational Medicine, Rutgers University-Robert Wood Johnson Medical School, Piscataway, NJ, USA
- Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, USA
| | - Teresa D. Tetley
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Junfeng Zhang
- Nicholas School of the Environment and Duke Global Health Institute, Duke University, Durham, NC, USA
| | - Panos G. Georgopoulos
- Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Environmental and Occupational Medicine, Rutgers University-Robert Wood Johnson Medical School, Piscataway, NJ, USA
- Department of Chemical & Biochemical Engineering, Rutgers University, Piscataway, NJ, USA
- Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, USA
- Corresponding Author: Tel: 848-445-0159; Fax: 732-445-0915;
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One-pot synthesis of antibacterial monomers with dual biocidal modes. J Dent 2014; 42:1078-95. [PMID: 24930871 DOI: 10.1016/j.jdent.2014.06.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 05/27/2014] [Accepted: 06/03/2014] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES The present study reported a method for preparing a blend of antibacterial quaternary ammonium silanes and quaternary ammonium methacryloxy silane (QAMS) based on the sol-gel reaction between dimethyldiethoxy silane and two trialkoxysilanes, one with an antibacterial quaternary ammonium functionality and the other with a methacryloxy functionality. METHODS Reaction products of the sol-gel reaction were characterised by direct infusion mass spectrometry, FTIR and proton, carbon and silicon NMR. This blend of monomers was incorporated into an experimental universal adhesive for evaluation of antimicrobial activity against Streptococcus mutans biofilms, microtensile bond strength and cytotoxicty. Retention of quaternary ammonium species on polymerised adhesive, leaching of these species from the adhesive and the ability of resin-dentine interfaces to inhibit S. mutans biofilms were evaluated over a 3-month water-ageing period. RESULTS The antibacterial adhesive version killed bacteria in S. mutans biofilms not only through the release of non-copolymerisable quaternary ammonium silane species (release-killing), but also via immobilised quaternary ammonium methacryloxy silane that are copolymerised with adhesive resin comonomers (contact-killing). Contact-killing was retained after water-ageing. The QAMS-containing universal adhesive has similar tensile bond strength as the control and two commercially available universal adhesives, when it was used for bonding to dentine in the etch-and-rinse mode and self-etching mode. Incorporation of the antimicrobial quaternary ammonium species blend did not adversely affect the cytotoxicity of the universal adhesive formulation. CONCLUSIONS Instead of using quaternary ammonium dimethacrylates and nanosilver, an alternative bimodal antimicrobial strategy for formulating antimicrobial universal dentine adhesives is achieved using the one-pot sol-gel synthesis scheme. CLINICAL SIGNIFICANCE The QAMS containing universal dentine adhesives with dual antimicrobial activity is a promising material aimed at preventing second caries and prolonging the longevity of resin composite restorations.
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Trickler WJ, Lantz-McPeak SM, Robinson BL, Paule MG, Slikker W, Biris AS, Schlager JJ, Hussain SM, Kanungo J, Gonzalez C, Ali SF. Porcine brain microvessel endothelial cells show pro-inflammatory response to the size and composition of metallic nanoparticles. Drug Metab Rev 2013; 46:224-31. [PMID: 24378227 DOI: 10.3109/03602532.2013.873450] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The purpose of the current studies was to determine if systemic exposure of various metallic nanoparticles differing in size and composition [silver (Ag-NPs, 25, 40 and 80 nm), copper-oxide (Cu-NPs, 40 and 60 nm) or gold (Au-NPs, 3 and 5 nm)] can induce the release of pro-inflammatory mediators that influence the restrictive nature of the blood-brain barrier (BBB) in vitro. Confluent porcine brain microvessel endothelial cells (pBMECs) (8-12 days) were treated with various metallic nanoparticles (15 μg/ml). Extracellular concentrations of pro-inflammatory mediators (IL-1β, TNFα and PGE2) were evaluated using ELISA. pBMECs were cultured in standard 12-well Transwell® inserts, and permeability was evaluated by measuring the transport of fluorescein across the pBMEC monolayers. PGE2 release following Cu-NP exposure was significantly increased when compared to the control. Similar results were observed for Ag-NPs but not Au-NPs. The secretion of TNFα and IL-1β was observed for both Cu-NPs and Ag-NPs but not in response to Au-NPs. The post-treatment time profiles of TNFα and IL-1β revealed that the IL-1β response was more persistent. The permeability ratios (exposure/control) were significantly greater following exposure to Cu-NPs or Ag-NPs, compared to Au-NPs. Together, these data suggest that the composition and size of NPs can cause significant pro-inflammatory response that can influence the integrity of the BBB.
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Affiliation(s)
- William J Trickler
- Division of Neurotoxicology, National Center for Toxicological Research, US Food and Drug Administration , Jefferson, AR , USA
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Singh M, Movia D, Mahfoud OK, Volkov Y, Prina-Mello A. Silver nanowires as prospective carriers for drug delivery in cancer treatment: an in vitro biocompatibility study on lung adenocarcinoma cells and fibroblasts. EUROPEAN JOURNAL OF NANOMEDICINE 2013. [DOI: 10.1515/ejnm-2013-0024] [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
AbstractLung cancer is a major and increasing global health problem. While there have been significant advances in the understanding of lung cancer biology, still no current therapy exists to reduce the inevitable and lethal progression of this disease. Silver nanowires (AgNWs) are promising candidates for a wide range of biomedical applications and the treatment of life-threatening diseases due to their unique physico-chemical and biochemical properties. However, the safety of this nanomaterial and its use as a biomedical tool are still under debate. This study evaluates the in vitro internalisation, cytotoxicity and influence on the cell cycle of AgNWs in lung adenocarcinoma (A549) cells and lung normal fibroblasts (MRC-5 cells). Our results demonstrate that AgNWs could be internalised effectively into A549 and MRC-5 cells without inducing detectable cytotoxicity, thus providing preliminary evidence on the future potential of AgNWs as biocompatible drug delivery platforms applicable in lung cancer therapies.
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