201
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Duda F, Bradel S, Bleich A, Abendroth P, Heemeier T, Ehlert N, Behrens P, Esser KH, Lenarz T, Brandes G, Prenzler NK. Biocompatibility of silver containing silica films on Bioverit® II middle ear prostheses in rabbits. J Biomater Appl 2015; 30:17-29. [PMID: 25659947 DOI: 10.1177/0885328215570103] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
For several centuries silver is known for its antibacterial effects. The middle ear is an interesting new scope for silver application since chronic inflammations combined with bacterial infection cause complete destruction of the fragile ossicle chain and tympanic membrane. The resulting conductive deafness requires tympanoplasty for reconstruction. Strategies to prevent bacterial growth on middle ear prostheses are highly recommended. In this study, rabbits were implanted with Bioverit® II middle ear prostheses functionalized with silver containing dense and nanoporous silica films which were compared with pure silica coatings as well as silver sulfadiazine cream applied on nanoporous silica coating. The health status of animals was continuously monitored; blood was examined before and after implantation. After 21 days, the middle ears were inspected; implants and mucosal samples were processed for electron microscopy. Autopsies were performed and systemic spreading of silver was chemically analyzed exemplarily in liver and kidneys. For verification of direct cytotoxicity, NIH 3T3 cells were cultured on similar silver containing silica coatings on glass up to 3 days. In vitro a reduced viability of fibroblasts adhering directly on the samples was detected compared to cells growing on the surrounding plastic of the same culture dish. In transmission electron microscopy, phagocytosed silver silica fragments, silver sulfadiazine cream as well as silver nanoparticles were noticed inside endosomes. In vivo, clinical and post mortem examinations were inconspicuous. Chemical analyses showed no increased silver content compared to controls. Mucosal coverages on almost all prostheses were found. But reduction of granulation tissue was only obvious around silver-coated implants. Single necroses and apoptosis in the mucosa were correlated by intracellular accumulation of metallic silver. For confirming supportive healing effects of middle ear implants, silver ion aggregates need to be tested in the future to optimize biocompatibility while assuring bactericidal effects in the middle ear.
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Affiliation(s)
- Franziska Duda
- ENT Department, Hannover Medical School, Hannover, Germany
| | - Susanne Bradel
- ENT Department, Hannover Medical School, Hannover, Germany
| | - André Bleich
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Philipp Abendroth
- Cluster of Excellence "Hearing4all", Institute for Inorganic Chemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Tanja Heemeier
- Cluster of Excellence "Hearing4all", Institute for Inorganic Chemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Nina Ehlert
- Cluster of Excellence "Hearing4all", Institute for Inorganic Chemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Peter Behrens
- Cluster of Excellence "Hearing4all", Institute for Inorganic Chemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Karl-Heinz Esser
- Institute of Zoology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Thomas Lenarz
- ENT Department, Hannover Medical School, Hannover, Germany
| | - Gudrun Brandes
- Institute of Cellular Biology in the Centre for Anatomy, Hannover Medical School, Hannover, Germany
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202
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Odijk M, van der Meer AD, Levner D, Kim HJ, van der Helm MW, Segerink LI, Frimat JP, Hamilton GA, Ingber DE, van den Berg A. Measuring direct current trans-epithelial electrical resistance in organ-on-a-chip microsystems. LAB ON A CHIP 2015; 15:745-52. [PMID: 25427650 DOI: 10.1039/c4lc01219d] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Trans-epithelial electrical resistance (TEER) measurements are widely used as real-time, non-destructive, and label-free measurements of epithelial and endothelial barrier function. TEER measurements are ideal for characterizing tissue barrier function in organs-on-chip studies for drug testing and investigation of human disease models; however, published reports using this technique have reported highly conflicting results even with identical cell lines and experimental setups. The differences are even more dramatic when comparing measurements in conventional Transwell systems with those obtained in microfluidic systems. Our goal in this work was therefore to enhance the fidelity of TEER measurements in microfluidic organs-on-chips, specifically using direct current (DC) measurements of TEER, as this is the most widely used method reported in the literature. Here we present a mathematical model that accounts for differences measured in TEER between microfluidic chips and Transwell systems, which arise from differences in device geometry. The model is validated by comparing TEER measurements obtained in a microfluidic gut-on-a-chip device versus in a Transwell culture system. Moreover, we show that even small gaps in cell coverage (e.g., 0.4%) are sufficient to cause a significant (~80%) drop in TEER. Importantly, these findings demonstrate that TEER measurements obtained in microfluidic systems, such as organs-on-chips, require special consideration, specifically when results are to be compared with measurements obtained from Transwell systems.
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Affiliation(s)
- Mathieu Odijk
- BIOS/Lab-on-Chip Group, MESA+ Institute for Nanotechnology & MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, P. O. Box 217, 7500 AE Enschede, The Netherlands.
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203
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Bazaka K, Jacob MV, Chrzanowski W, Ostrikov K. Anti-bacterial surfaces: natural agents, mechanisms of action, and plasma surface modification. RSC Adv 2015. [DOI: 10.1039/c4ra17244b] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This article reviews antibacterial surface strategies based on reactive plasma chemistry, focusing on how plasma-assisted processing of natural antimicrobial agents can produce antifouling and antibacterial materials for biomedical devices.
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Affiliation(s)
- K. Bazaka
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
| | - M. V. Jacob
- College of Science, Technology and Engineering
- James Cook University
- Townsville
- Australia
| | | | - K. Ostrikov
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
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204
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Belkhair S, Kinninmonth M, Fisher L, Gasharova B, Liauw CM, Verran J, Mihailova B, Tosheva L. Silver zeolite-loaded silicone elastomers: a multidisciplinary approach to synthesis and antimicrobial assessment. RSC Adv 2015. [DOI: 10.1039/c5ra03856a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The fabrication of silicone elastomers containing organo-silane modified Ag-zeolites with potential for applications as antibacterial medical devices is demonstrated.
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Affiliation(s)
- Sama Belkhair
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Malcolm Kinninmonth
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Leanne Fisher
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Biliana Gasharova
- Institute for Photon Science and Synchrotron Radiation
- Karlsruhe Institute of Technology
- Karlsruhe 76021
- Germany
| | - Christopher M. Liauw
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Joanna Verran
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Boriana Mihailova
- Mineralogisch-Petrographisches Institut
- Universität Hamburg
- D-20146 Hamburg
- Germany
| | - Lubomira Tosheva
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
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205
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Chauhan I, Aggrawal S, Chandravati C, Mohanty P. Metal oxide nanostructures incorporated/immobilized paper matrices and their applications: a review. RSC Adv 2015. [DOI: 10.1039/c5ra13601f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A comprehensive review on the metal oxide nanostructures incorporated/immobilized paper matrices byex situandin situmethods for various applications.
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Affiliation(s)
- Indu Chauhan
- Department of Applied Science and Engineering
- IIT Roorkee
- Saharanpur Campus
- Saharanpur-247001
- India
| | - Sudiksha Aggrawal
- Department of Applied Science and Engineering
- IIT Roorkee
- Saharanpur Campus
- Saharanpur-247001
- India
| | - Chandravati Chandravati
- Department of Applied Science and Engineering
- IIT Roorkee
- Saharanpur Campus
- Saharanpur-247001
- India
| | - Paritosh Mohanty
- Department of Applied Science and Engineering
- IIT Roorkee
- Saharanpur Campus
- Saharanpur-247001
- India
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206
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Range S, Hagmeyer D, Rotan O, Sokolova V, Verheyen J, Siebers B, Epple M. A continuous method to prepare poorly crystalline silver-doped calcium phosphate ceramics with antibacterial properties. RSC Adv 2015. [DOI: 10.1039/c5ra00401b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Silver-doped calcium phosphate ceramics were prepared in discontinuous and continuous processes with different amounts of incorporated silver (up to 1.8 wt% silver).
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Affiliation(s)
- S. Range
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - D. Hagmeyer
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - O. Rotan
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - V. Sokolova
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - J. Verheyen
- Biofilm Centre Molecular Enzyme Technology and Biochemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - B. Siebers
- Biofilm Centre Molecular Enzyme Technology and Biochemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - M. Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)
- University of Duisburg-Essen
- 45117 Essen
- Germany
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207
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Ferreira L, Almeida-Aguiar C, Parpot P, Fonseca AM, Neves IC. Preparation and assessment of antimicrobial properties of bimetallic materials based on NaY zeolite. RSC Adv 2015. [DOI: 10.1039/c5ra04960a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ZnAg–Y was the most active material tested against the bacteria Escherichia coli and the yeast Saccharomyces cerevisiae as indicator strains.
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Affiliation(s)
- Liliana Ferreira
- Centre of Chemistry
- Chemistry Department
- University of Minho
- 4710-057 Braga
- Portugal
| | - Cristina Almeida-Aguiar
- CITAB (Center for the Research and Technology of Agro-Environmental and Biological Sciences)
- AgroBioPlant Group
- Biology Department
- University of Minho
- 4710-057 Braga
| | - Pier Parpot
- Centre of Chemistry
- Chemistry Department
- University of Minho
- 4710-057 Braga
- Portugal
| | - António M. Fonseca
- Centre of Chemistry
- Chemistry Department
- University of Minho
- 4710-057 Braga
- Portugal
| | - Isabel C. Neves
- Centre of Chemistry
- Chemistry Department
- University of Minho
- 4710-057 Braga
- Portugal
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208
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Ahlberg S, Antonopulos A, Diendorf J, Dringen R, Epple M, Flöck R, Goedecke W, Graf C, Haberl N, Helmlinger J, Herzog F, Heuer F, Hirn S, Johannes C, Kittler S, Köller M, Korn K, Kreyling WG, Krombach F, Lademann J, Loza K, Luther EM, Malissek M, Meinke MC, Nordmeyer D, Pailliart A, Raabe J, Rancan F, Rothen-Rutishauser B, Rühl E, Schleh C, Seibel A, Sengstock C, Treuel L, Vogt A, Weber K, Zellner R. PVP-coated, negatively charged silver nanoparticles: A multi-center study of their physicochemical characteristics, cell culture and in vivo experiments. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:1944-65. [PMID: 25383306 PMCID: PMC4222445 DOI: 10.3762/bjnano.5.205] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 10/07/2014] [Indexed: 04/14/2023]
Abstract
PVP-capped silver nanoparticles with a diameter of the metallic core of 70 nm, a hydrodynamic diameter of 120 nm and a zeta potential of -20 mV were prepared and investigated with regard to their biological activity. This review summarizes the physicochemical properties (dissolution, protein adsorption, dispersability) of these nanoparticles and the cellular consequences of the exposure of a broad range of biological test systems to this defined type of silver nanoparticles. Silver nanoparticles dissolve in water in the presence of oxygen. In addition, in biological media (i.e., in the presence of proteins) the surface of silver nanoparticles is rapidly coated by a protein corona that influences their physicochemical and biological properties including cellular uptake. Silver nanoparticles are taken up by cell-type specific endocytosis pathways as demonstrated for hMSC, primary T-cells, primary monocytes, and astrocytes. A visualization of particles inside cells is possible by X-ray microscopy, fluorescence microscopy, and combined FIB/SEM analysis. By staining organelles, their localization inside the cell can be additionally determined. While primary brain astrocytes are shown to be fairly tolerant toward silver nanoparticles, silver nanoparticles induce the formation of DNA double-strand-breaks (DSB) and lead to chromosomal aberrations and sister-chromatid exchanges in Chinese hamster fibroblast cell lines (CHO9, K1, V79B). An exposure of rats to silver nanoparticles in vivo induced a moderate pulmonary toxicity, however, only at rather high concentrations. The same was found in precision-cut lung slices of rats in which silver nanoparticles remained mainly at the tissue surface. In a human 3D triple-cell culture model consisting of three cell types (alveolar epithelial cells, macrophages, and dendritic cells), adverse effects were also only found at high silver concentrations. The silver ions that are released from silver nanoparticles may be harmful to skin with disrupted barrier (e.g., wounds) and induce oxidative stress in skin cells (HaCaT). In conclusion, the data obtained on the effects of this well-defined type of silver nanoparticles on various biological systems clearly demonstrate that cell-type specific properties as well as experimental conditions determine the biocompatibility of and the cellular responses to an exposure with silver nanoparticles.
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209
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Poortavasoly H, Montazer M, Harifi T. Simultaneous synthesis of nano silver and activation of polyester producing higher tensile strength aminohydroxylated fiber with antibacterial and hydrophilic properties. RSC Adv 2014. [DOI: 10.1039/c4ra04835k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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210
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Bolea E, Jiménez-Lamana J, Laborda F, Abad-Álvaro I, Bladé C, Arola L, Castillo JR. Detection and characterization of silver nanoparticles and dissolved species of silver in culture medium and cells by AsFlFFF-UV-Vis-ICPMS: application to nanotoxicity tests. Analyst 2014; 139:914-22. [PMID: 24162133 DOI: 10.1039/c3an01443f] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A methodology based on Asymmetric Flow Field-Flow Fractionation (AsFlFFF) coupled with UV-Vis absorption spectrometry and ICP mass spectrometry (ICPMS) has been developed and applied to the study of silver nanoparticles (AgNPs) and dissolved species of silver in culture media and cells used in cytotoxicity tests. The effect of a nano-silver based product (protein stabilized silver nanoparticles ca. 15 nm average diameter) on human hepatoma (HepG2) cell viability has been studied. UV-Vis absorption spectrometry provided information about the nature (organic vs. nanoparticle) of the eluted species, whereas the silver was monitored by ICPMS. A shift towards larger hydrodynamic diameters was observed in the AgNPs after a 24 hour incubation period in the culture medium, which suggests a "protein corona" effect. Silver(I) associated with proteins present in the culture medium has also been detected, as a consequence of the oxidation process experimented by the AgNPs. However, the Ag(I) released into the culture medium did not justify the toxicity levels observed. AgNPs associated with the cultured HepG2 cells were also identified by AsFlFFF, after applying a solubilisation process based on the use of tetramethylammonium hydroxide (TMAH) and Triton X-100. These results have been confirmed by transmission electronic microscopy (TEM) analysis of the fractions collected from the AsFlFFF. The effect of AgNPs on HepG2 cells has been compared to that caused by silver(I) as AgNO3 under the same conditions. The determination of the total content of silver in the cells confirms that a much larger mass of silver as AgNPs with respect to AgNO3 (16 to 1) is needed to observe a similar toxicity.
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Affiliation(s)
- E Bolea
- Group of Analytical Spectroscopy and Sensors (GEAS), Institute of Environmental Sciences (IUCA), University of Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
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211
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Loza K, Sengstock C, Chernousova S, Köller M, Epple M. The predominant species of ionic silver in biological media is colloidally dispersed nanoparticulate silver chloride. RSC Adv 2014. [DOI: 10.1039/c4ra04764h] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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212
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Hachicho N, Hoffmann P, Ahlert K, Heipieper HJ. Effect of silver nanoparticles and silver ions on growth and adaptive response mechanisms of Pseudomonas putida mt-2. FEMS Microbiol Lett 2014; 355:71-7. [PMID: 24801753 DOI: 10.1111/1574-6968.12460] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 04/30/2014] [Accepted: 05/01/2014] [Indexed: 11/26/2022] Open
Abstract
The distribution and use of nanoparticles increased rapidly during the last years, while the knowledge about mode of action, ecological tolerance and biodegradability of these chemicals is still insufficient. The effect of silver nanoparticles (AgNP) and free silver ions (Ag(+) , AgNO3 ) on Pseudomonas putida mt-2 as one of the best described bacterial strains for stress response were investigated. The effective concentration (EC50) causing 50% growth inhibition for AgNP was about 250 mg L(-1) , whereas this was only 0.175 mg L(-1) for AgNO3 . However, when calculating the amount of free silver ions released from AgNP both tested compounds showed very similar results. Therefore, the antibacterial activity of AgNP can be explained and reduced, respectively, to the amount of silver ions released from the nanoparticles. Both tested compounds showed a strong activation of the unique membrane adaptive response of Pseudomonas strains, the cis-trans isomerization of unsaturated fatty acids, whereas another important adaptive response of these bacteria, changes in cell surface hydrophobicity, measured as water contact angle, was not activated. These results are important informations for the estimation of environmental tolerance of newly developed, active ingredients like silver nanoparticles.
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Affiliation(s)
- Nancy Hachicho
- Department of Environmental Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany
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213
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Mei S, Wang H, Wang W, Tong L, Pan H, Ruan C, Ma Q, Liu M, Yang H, Zhang L, Cheng Y, Zhang Y, Zhao L, Chu PK. Antibacterial effects and biocompatibility of titanium surfaces with graded silver incorporation in titania nanotubes. Biomaterials 2014; 35:4255-65. [DOI: 10.1016/j.biomaterials.2014.02.005] [Citation(s) in RCA: 252] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 02/04/2014] [Indexed: 02/08/2023]
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214
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Mulley G, Jenkins ATA, Waterfield NR. Inactivation of the antibacterial and cytotoxic properties of silver ions by biologically relevant compounds. PLoS One 2014; 9:e94409. [PMID: 24728271 PMCID: PMC3984151 DOI: 10.1371/journal.pone.0094409] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Accepted: 03/16/2014] [Indexed: 12/25/2022] Open
Abstract
There has been a recent surge in the use of silver as an antimicrobial agent in a wide range of domestic and clinical products, intended to prevent or treat bacterial infections and reduce bacterial colonization of surfaces. It has been reported that the antibacterial and cytotoxic properties of silver are affected by the assay conditions, particularly the type of growth media used in vitro. The toxicity of Ag+ to bacterial cells is comparable to that of human cells. We demonstrate that biologically relevant compounds such as glutathione, cysteine and human blood components significantly reduce the toxicity of silver ions to clinically relevant pathogenic bacteria and primary human dermal fibroblasts (skin cells). Bacteria are able to grow normally in the presence of silver nitrate at >20-fold the minimum inhibitory concentration (MIC) if Ag+ and thiols are added in a 1∶1 ratio because the reaction of Ag+ with extracellular thiols prevents silver ions from interacting with cells. Extracellular thiols and human serum also significantly reduce the antimicrobial activity of silver wound dressings Aquacel-Ag (Convatec) and Acticoat (Smith & Nephew) to Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli in vitro. These results have important implications for the deployment of silver as an antimicrobial agent in environments exposed to biological tissue or secretions. Significant amounts of money and effort have been directed at the development of silver-coated medical devices (e.g. dressings, catheters, implants). We believe our findings are essential for the effective design and testing of antimicrobial silver coatings.
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Affiliation(s)
- Geraldine Mulley
- School of Biological Sciences, University of Reading, Reading, United Kingdom
- * E-mail:
| | - A. Tobias A. Jenkins
- Department of Chemistry, University of Bath, Claverton Down, Bath, United Kingdom
| | - Nicholas R. Waterfield
- Division of Microbiology and Infection, Warwick Medical School, Warwick University, Coventry, United Kingdom
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215
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Surmenev RA, Surmeneva MA, Ivanova AA. Significance of calcium phosphate coatings for the enhancement of new bone osteogenesis--a review. Acta Biomater 2014; 10:557-79. [PMID: 24211734 DOI: 10.1016/j.actbio.2013.10.036] [Citation(s) in RCA: 317] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 10/25/2013] [Accepted: 10/29/2013] [Indexed: 12/15/2022]
Abstract
A systematic analysis of results available from in vitro, in vivo and clinical trials on the effects of biocompatible calcium phosphate (CaP) coatings is presented. An overview of the most frequently used methods to prepare CaP-based coatings was conducted. Dense, homogeneous, highly adherent and biocompatible CaP or hybrid organic/inorganic CaP coatings with tailored properties can be deposited. It has been demonstrated that CaP coatings have a significant effect on the bone regeneration process. In vitro experiments using different cells (e.g. SaOS-2, human mesenchymal stem cells and osteoblast-like cells) have revealed that CaP coatings enhance cellular adhesion, proliferation and differentiation to promote bone regeneration. However, in vivo, the exact mechanism of osteogenesis in response to CaP coatings is unclear; indeed, there are conflicting reports of the effectiveness of CaP coatings, with results ranging from highly effective to no significant or even negative effects. This review therefore highlights progress in CaP coatings for orthopaedic implants and discusses the future research and use of these devices. Currently, an exciting area of research is in bioactive hybrid composite CaP-based coatings containing both inorganic (CaP coating) and organic (collagen, bone morphogenetic proteins, arginylglycylaspartic acid etc.) components with the aim of promoting tissue ingrowth and vascularization. Further investigations are necessary to reveal the relative influences of implant design, surgical procedure, and coating characteristics (thickness, structure, topography, porosity, wettability etc.) on the long-term clinical effects of hybrid CaP coatings. In addition to commercially available plasma spraying, other effective routes for the fabrication of hybrid CaP coatings for clinical use still need to be determined and current progress is discussed.
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Affiliation(s)
- Roman A Surmenev
- Department of Theoretical and Experimental Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia; Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, 70569 Stuttgart, Germany.
| | - Maria A Surmeneva
- Department of Theoretical and Experimental Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Anna A Ivanova
- Department of Theoretical and Experimental Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
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216
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Sengstock C, Diendorf J, Epple M, Schildhauer TA, Köller M. Effect of silver nanoparticles on human mesenchymal stem cell differentiation. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:2058-69. [PMID: 25551033 PMCID: PMC4273214 DOI: 10.3762/bjnano.5.214] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 10/22/2014] [Indexed: 05/13/2023]
Abstract
BACKGROUND Silver nanoparticles (Ag-NP) are one of the fastest growing products in nano-medicine due to their enhanced antibacterial activity at the nanoscale level. In biomedicine, hundreds of products have been coated with Ag-NP. For example, various medical devices include silver, such as surgical instruments, bone implants and wound dressings. After the degradation of these materials, or depending on the coating technique, silver in nanoparticle or ion form can be released and may come into close contact with tissues and cells. Despite incorporation of Ag-NP as an antibacterial agent in different products, the toxicological and biological effects of silver in the human body after long-term and low-concentration exposure are not well understood. In the current study, we investigated the effects of both ionic and nanoparticulate silver on the differentiation of human mesenchymal stem cells (hMSCs) into adipogenic, osteogenic and chondrogenic lineages and on the secretion of the respective differentiation markers adiponectin, osteocalcin and aggrecan. RESULTS As shown through laser scanning microscopy, Ag-NP with a size of 80 nm (hydrodynamic diameter) were taken up into hMSCs as nanoparticulate material. After 24 h of incubation, these Ag-NP were mainly found in the endo-lysosomal cell compartment as agglomerated material. Cytotoxicity was observed for differentiated or undifferentiated hMSCs treated with high silver concentrations (≥20 µg·mL(-1) Ag-NP; ≥1.5 µg·mL(-1) Ag(+) ions) but not with low-concentration treatments (≤10 µg·mL(-1) Ag-NP; ≤1.0 µg·mL(-1) Ag(+) ions). Subtoxic concentrations of Ag-NP and Ag(+) ions impaired the adipogenic and osteogenic differentiation of hMSCs in a concentration-dependent manner, whereas chondrogenic differentiation was unaffected after 21 d of incubation. In contrast to aggrecan, the inhibitory effect of adipogenic and osteogenic differentiation was confirmed by a decrease in the secretion of specific biomarkers, including adiponectin (adipocytes) and osteocalcin (osteoblasts). CONCLUSION Aside from the well-studied antibacterial effect of silver, little is known about the influence of nano-silver on cell differentiation processes. Our results demonstrate that ionic or nanoparticulate silver attenuates the adipogenic and osteogenic differentiation of hMSCs even at non-toxic concentrations. Therefore, more studies are needed to investigate the effects of silver species on cells at low concentrations during long-term treatment.
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Affiliation(s)
- Christina Sengstock
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University Bochum, Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany
| | - Jörg Diendorf
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, 45117 Essen, Germany
| | - Thomas A Schildhauer
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University Bochum, Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany
| | - Manfred Köller
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University Bochum, Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany
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217
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Boanini E, Torricelli P, Cassani MC, Gentilomi GA, Ballarin B, Rubini K, Bonvicini F, Bigi A. Cationic-anionic polyelectrolyte interaction as a tool to graft silver nanoparticles on hydroxyapatite crystals and prevent cytotoxicity. RSC Adv 2014. [DOI: 10.1039/c3ra45846f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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218
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Gupta NR, Prasad BLV, Gopinath CS, Badiger MV. A nanocomposite of silver and thermo-associating polymer by a green route: a potential soft–hard material for controlled drug release. RSC Adv 2014. [DOI: 10.1039/c3ra45022h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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219
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Yasur J, Rani PU. Environmental effects of nanosilver: impact on castor seed germination, seedling growth, and plant physiology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:8636-48. [PMID: 23702569 DOI: 10.1007/s11356-013-1798-3] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 04/30/2013] [Indexed: 05/25/2023]
Abstract
Increasing use of nanoparticles in daily products is of great concern today, especially when their positive and negative impact on environment is not known. Hence, in current research, we have studied the impact of silver nanoparticle (AgNPs) and silver nitrate (AgNO3) application on seed germination, root, and shoot length of castor bean, Ricinus communis L. plant. Silver nanoparticles had no significant effects on seedling growth even at higher concentration of 4,000 mg L(-1), while the silver in bulk form as AgNO3 applied on the castor bean seeds inhibited the seed germination. Silver uptake in seedlings of the castor seeds on treatment with both the forms of silver was confirmed through atomic absorption spectroscopy studies. The silver nanoparticle and silver nitrate application to castor seeds also caused an enhanced enzymatic activity of ROS enzymes and phenolic content in castor seedlings. High-performance liquid chromatography analysis of individual phenols indicated enhanced content of parahydroxy benzoic acid. These kinds of studies are of great interest in order to unveil the movement and accumulation of nanoparticles in plant tissues for assessing future applications in the field or laboratory.
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Affiliation(s)
- Jyothsna Yasur
- Biology and Biotechnology Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500007, Andhra Pradesh, India
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220
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Bondarenko O, Juganson K, Ivask A, Kasemets K, Mortimer M, Kahru A. Toxicity of Ag, CuO and ZnO nanoparticles to selected environmentally relevant test organisms and mammalian cells in vitro: a critical review. Arch Toxicol 2013; 87:1181-200. [PMID: 23728526 PMCID: PMC3677982 DOI: 10.1007/s00204-013-1079-4] [Citation(s) in RCA: 667] [Impact Index Per Article: 60.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Accepted: 05/08/2013] [Indexed: 11/26/2022]
Abstract
Nanoparticles (NPs) of copper oxide (CuO), zinc oxide (ZnO) and especially nanosilver are intentionally used to fight the undesirable growth of bacteria, fungi and algae. Release of these NPs from consumer and household products into waste streams and further into the environment may, however, pose threat to the 'non-target' organisms, such as natural microbes and aquatic organisms. This review summarizes the recent research on (eco)toxicity of silver (Ag), CuO and ZnO NPs. Organism-wise it focuses on key test species used for the analysis of ecotoxicological hazard. For comparison, the toxic effects of studied NPs toward mammalian cells in vitro were addressed. Altogether 317 L(E)C50 or minimal inhibitory concentrations (MIC) values were obtained for algae, crustaceans, fish, bacteria, yeast, nematodes, protozoa and mammalian cell lines. As a rule, crustaceans, algae and fish proved most sensitive to the studied NPs. The median L(E)C50 values of Ag NPs, CuO NPs and ZnO NPs (mg/L) were 0.01, 2.1 and 2.3 for crustaceans; 0.36, 2.8 and 0.08 for algae; and 1.36, 100 and 3.0 for fish, respectively. Surprisingly, the NPs were less toxic to bacteria than to aquatic organisms: the median MIC values for bacteria were 7.1, 200 and 500 mg/L for Ag, CuO and ZnO NPs, respectively. In comparison, the respective median L(E)C50 values for mammalian cells were 11.3, 25 and 43 mg/L. Thus, the toxic range of all the three metal-containing NPs to target- and non-target organisms overlaps, indicating that the leaching of biocidal NPs from consumer products should be addressed.
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Affiliation(s)
- Olesja Bondarenko
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Katre Juganson
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
- Department of Chemistry, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Angela Ivask
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Kaja Kasemets
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Monika Mortimer
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
- Aquatic Biogeochemistry and Ecotoxicology, Institute F.-A. Forel, Faculty of Sciences, University of Geneva, 10 route de Suisse, 1290 Versoix, Switzerland
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
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221
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Liu L, Yang J, Xie J, Luo Z, Jiang J, Yang YY, Liu S. The potent antimicrobial properties of cell penetrating peptide-conjugated silver nanoparticles with excellent selectivity for gram-positive bacteria over erythrocytes. NANOSCALE 2013; 5:3834-40. [PMID: 23525222 DOI: 10.1039/c3nr34254a] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Silver nanoparticles are of great interest for use as antimicrobial agents. Studies aimed at producing potent nano-silver biocides have focused on manipulation of particle size, shape, composition and surface charge. Here, we report the cell penetrating peptide catalyzed formation of antimicrobial silver nanoparticles in N,N-dimethylformamide. The novel nano-composite demonstrated a distinctly enhanced biocidal effect toward bacteria (gram-positive Bacillus subtilis, gram-negative Escherichia coli) and pathogenic yeast (Candida albicans), as compared to triangular and extremely small silver nanoparticles. In addition, a satisfactory biocompatibility was verified by a haemolysis test. Our results provide a paradigm in developing strategies that can maximize the silver nanoparticle application potentials while minimizing the toxic effects.
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Affiliation(s)
- Lihong Liu
- Department of Chemical Engineering, Curtin University, WA 6148, Australia
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222
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Peetsch A, Greulich C, Braun D, Stroetges C, Rehage H, Siebers B, Köller M, Epple M. Silver-doped calcium phosphate nanoparticles: Synthesis, characterization, and toxic effects toward mammalian and prokaryotic cells. Colloids Surf B Biointerfaces 2013; 102:724-9. [DOI: 10.1016/j.colsurfb.2012.09.040] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 09/25/2012] [Accepted: 09/26/2012] [Indexed: 01/22/2023]
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223
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Shtansky DV, Levashov EA, Batenina IV, Gloushankova NA, Anisimova NY, Kiselevsky MV, Reshetov IV. Recent progress in the field of multicomponent bioactive nanostructured films. RSC Adv 2013. [DOI: 10.1039/c3ra23325a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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224
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Chernousova S, Epple M. Silber als antibakterielles Agens: Ion, Nanopartikel, Metall. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205923] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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225
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Chernousova S, Epple M. Silver as antibacterial agent: ion, nanoparticle, and metal. Angew Chem Int Ed Engl 2012; 52:1636-53. [PMID: 23255416 DOI: 10.1002/anie.201205923] [Citation(s) in RCA: 1270] [Impact Index Per Article: 105.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 08/22/2012] [Indexed: 12/12/2022]
Abstract
The antibacterial action of silver is utilized in numerous consumer products and medical devices. Metallic silver, silver salts, and also silver nanoparticles are used for this purpose. The state of research on the effect of silver on bacteria, cells, and higher organisms is summarized. It can be concluded that the therapeutic window for silver is narrower than often assumed. However, the risks for humans and the environment are probably limited.
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Affiliation(s)
- Svitlana Chernousova
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Universitätsstrasse 5-7, 45117 Essen, Germany
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