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Sánchez-Gálvez J, Martínez-Isasi S, Gómez-Salgado J, Rumbo-Prieto JM, Sobrido-Prieto M, Sánchez-Hernández M, García-Martínez M, Fernández-García D. Cytotoxicity and concentration of silver ions released from dressings in the treatment of infected wounds: a systematic review. Front Public Health 2024; 12:1331753. [PMID: 38450128 PMCID: PMC10916701 DOI: 10.3389/fpubh.2024.1331753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/30/2024] [Indexed: 03/08/2024] Open
Abstract
Introduction Silver-releasing dressings are used in the treatment of infected wounds. Despite their widespread use, neither the amount of silver released nor the potential in vivo toxicity is known. The aim of this study was to evaluate the cytotoxic effects and the amount of silver released from commercially available dressings with infected wounds. Methods The review was conducted according to the PRISMA statement. The Web of Science, PubMed, Embase, Scopus, and CINAHL databases were searched for studies from 2002 through December 2022. The criteria were as follows: population (human patients with infected wounds); intervention (commercial dressings with clinical silver authorized for use in humans); and outcomes (concentrations of silver ions released into tissues and plasma). Any study based on silver-free dressings, experimental dressings, or dressings not for clinical use in humans should be excluded. According to the type of study, systematic reviews, experimental, quasi-experimental, and observational studies in English, Spanish, or Portuguese were considered. The quality of the selected studies was assessed using the JBI critical appraisal tools. Studies that assessed at least 65% of the included items were included. Data were extracted independently by two reviewers. Results 740 articles were found and five were finally selected (all of them quasi-experimental). Heterogeneity was found in terms of study design, application of silver dressings, and methods of assessment, which limited the comparability between studies. Conclusion In vivo comparative studies of clinical dressings for control of infection lack a standardized methodology that allows observation of all the variables of silver performance at local and systemic levels, as well as evaluation of its cytotoxicity. It cannot be concluded whether the assessed concentrations of released silver in commercial dressings for the topical treatment of infected wounds are cytotoxic to skin cells. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022351041, PROSPERO [CRD42022351041].
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Affiliation(s)
- Javier Sánchez-Gálvez
- Doctoral Programme in Health, Disability, Dependence, and Welfare, University of León, León, Spain
- Faculty of Nursing, Catholic University of Murcia (UCAM), Cartagena, Murcia, Spain
| | - Santiago Martínez-Isasi
- Simulation, Life Support, and Intensive Care Research Unit (SICRUS), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Galicia, Spain
- Primary Care Interventions to Prevent Maternal and Child Chronic Diseases of Perinatal and Developmental Origin (RICORS) (RD21/0012/0025), Carlos III Health Institute, Madrid, Spain
- CLINURSID Research Group, Department of Psychiatry, Radiology, Public Health, Nursing, and Medicine, University of Santiago de Compostela, Santiago de Compostela, Galicia, Spain
| | - Juan Gómez-Salgado
- Department of Sociology, Social Work, and Public Health, Faculty of Labour Sciences, University of Huelva, Huelva, Spain
- Escuela de Posgrado, Universidad de Especialidades Espíritu Santo, Guayaquil, Guayas, Ecuador
| | - José María Rumbo-Prieto
- Department of Health Sciences, Faculty of Nursing and Podiatry of Ferrol, University of A Coruña, A Coruña, Spain
- Knowledge Support Unit (USCO), Ferrol University Hospital Complex, Health District of Ferrol, Galician Health Service, Ferrol, Spain
| | - María Sobrido-Prieto
- Department of Health Sciences, Faculty of Nursing and Podiatry of Ferrol, University of A Coruña, A Coruña, Spain
| | | | - María García-Martínez
- Simulation, Life Support, and Intensive Care Research Unit (SICRUS), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Galicia, Spain
- Primary Care Interventions to Prevent Maternal and Child Chronic Diseases of Perinatal and Developmental Origin (RICORS) (RD21/0012/0025), Carlos III Health Institute, Madrid, Spain
| | - Daniel Fernández-García
- Health Research Nursing Group (GREIS), Department of Nursing and Physiotherapy, University of León, León, Spain
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Nano-silver functionalized polysaccharides as a platform for wound dressings: A review. Int J Biol Macromol 2022; 194:644-653. [PMID: 34822832 DOI: 10.1016/j.ijbiomac.2021.11.108] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 11/14/2021] [Accepted: 11/15/2021] [Indexed: 12/18/2022]
Abstract
The healing of defected skin tissue is a complex process, especially for chronic wounds. Poor healing of these wounds may cause extensive suffering and high cost for patients. Traditional wound dressings are typically designed for a single function and they cannot satisfy all requirements for the whole process of wound healing. Therefore, it is necessary to develop new types of wound dressings with multiple functions for wound healing. In particular, adding an antibacterial function has been shown to be of great benefit during tissue repair. Nano‑silver is widely used in wound treatment because of various advantages, such as its wide antibacterial spectrum and lower drug resistance. Therefore, wound dressings loaded with nano‑silver have attracted widespread attention in wound healing. Naturally derived polysaccharides hold great potential as wound dressings, because of their abundant availability, low prices and good biocompatibility. In this review, nano‑silver functionalized polysaccharide-based wound dressings are systematically reviewed, including their preparation methods, antibacterial performances and classification of nano‑silver wound dressings. Moreover, the toxicity of nano‑silver based wound dressings is discussed and the prospective research direction is elaborated. This review aims to provide readers with an overview of the latest developments in silver nanotechnology, and to provide a little guidance for the research of nano‑silver functionalized polysaccharide-based wound dressings.
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Study on the Effect and Mechanism of Antibacterial Adhesive Hydrogel on Wound Healing. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2021; 2021:8212518. [PMID: 34887942 PMCID: PMC8651344 DOI: 10.1155/2021/8212518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/28/2021] [Accepted: 10/30/2021] [Indexed: 11/21/2022]
Abstract
Bleeding and infection can cause significant increases in mortalities. Hydrogel sealants have attracted extensive attention for their ability to control bleeding. In this study, the adjuvant treatment with antibacterial adhesive hydrogel dressings was applied to patients with deep second-degree burns/scalds. The traditional medical dressing was regarded as control adjuvant treatment. The results indicated that the total positive rate of bacteria in wound secretions and the pain during dressing change in patients who used antibacterial adhesive hydrogel dressings were significantly reduced. The number of fibroblasts and new capillaries in the granulation tissue of the wound increased, and the patient's wound healing is accelerated. The overall clinical effectiveness has been significantly improved. It is proven that the antibacterial adhesive hydrogel dressing has a significant effect on wound healing.
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Godoy-Gallardo M, Eckhard U, Delgado LM, de Roo Puente YJ, Hoyos-Nogués M, Gil FJ, Perez RA. Antibacterial approaches in tissue engineering using metal ions and nanoparticles: From mechanisms to applications. Bioact Mater 2021; 6:4470-4490. [PMID: 34027235 PMCID: PMC8131399 DOI: 10.1016/j.bioactmat.2021.04.033] [Citation(s) in RCA: 206] [Impact Index Per Article: 68.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 04/02/2021] [Accepted: 04/20/2021] [Indexed: 02/07/2023] Open
Abstract
Bacterial infection of implanted scaffolds may have fatal consequences and, in combination with the emergence of multidrug bacterial resistance, the development of advanced antibacterial biomaterials and constructs is of great interest. Since decades ago, metals and their ions had been used to minimize bacterial infection risk and, more recently, metal-based nanomaterials, with improved antimicrobial properties, have been advocated as a novel and tunable alternative. A comprehensive review is provided on how metal ions and ion nanoparticles have the potential to decrease or eliminate unwanted bacteria. Antibacterial mechanisms such as oxidative stress induction, ion release and disruption of biomolecules are currently well accepted. However, the exact antimicrobial mechanisms of the discussed metal compounds remain poorly understood. The combination of different metal ions and surface decorations of nanoparticles will lead to synergistic effects and improved microbial killing, and allow to mitigate potential side effects to the host. Starting with a general overview of antibacterial mechanisms, we subsequently focus on specific metal ions such as silver, zinc, copper, iron and gold, and outline their distinct modes of action. Finally, we discuss the use of these metal ions and nanoparticles in tissue engineering to prevent implant failure.
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Affiliation(s)
- Maria Godoy-Gallardo
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Carrer de Josep Trueta, 08195, del Vallès, Sant Cugat, Barcelona, Spain
| | - Ulrich Eckhard
- Proteolysis Lab, Department of Structural Biology, Molecular Biology Institute of Barcelona, CSIC, Barcelona Science Park, Baldiri Reixac 15-21, 08028, Barcelona, Spain
| | - Luis M. Delgado
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Carrer de Josep Trueta, 08195, del Vallès, Sant Cugat, Barcelona, Spain
| | - Yolanda J.D. de Roo Puente
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Carrer de Josep Trueta, 08195, del Vallès, Sant Cugat, Barcelona, Spain
| | - Mireia Hoyos-Nogués
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Carrer de Josep Trueta, 08195, del Vallès, Sant Cugat, Barcelona, Spain
| | - F. Javier Gil
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Carrer de Josep Trueta, 08195, del Vallès, Sant Cugat, Barcelona, Spain
| | - Roman A. Perez
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Carrer de Josep Trueta, 08195, del Vallès, Sant Cugat, Barcelona, Spain
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5
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Keil C, Hübner C, Richter C, Lier S, Barthel L, Meyer V, Subrahmanyam R, Gurikov P, Smirnova I, Haase H. Ca-Zn-Ag Alginate Aerogels for Wound Healing Applications: Swelling Behavior in Simulated Human Body Fluids and Effect on Macrophages. Polymers (Basel) 2020; 12:E2741. [PMID: 33218195 PMCID: PMC7699170 DOI: 10.3390/polym12112741] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/13/2020] [Accepted: 11/14/2020] [Indexed: 02/06/2023] Open
Abstract
Chronic non-healing wounds represent a substantial economic burden to healthcare systems and cause a considerable reduction in quality of life for those affected. Approximately 0.5-2% of the population in developed countries are projected to experience a chronic wound in their lifetime, necessitating further developments in the area of wound care materials. The use of aerogels for wound healing applications has increased due to their high exudate absorbency and ability to incorporate therapeutic substances, amongst them trace metals, to promote wound-healing. This study evaluates the swelling behavior of Ca-Zn-Ag-loaded alginate aerogels and their metal release upon incubation in human sweat or wound fluid substitutes. All aerogels show excellent liquid uptake from any of the formulas and high liquid holding capacities. Calcium is only marginally released into the swelling solvents, thus remaining as alginate bridging component aiding the absorption and fast transfer of liquids into the aerogel network. The zinc transfer quota is similar to those observed for common wound dressings in human and animal injury models. With respect to the immune regulatory function of zinc, cell culture studies show a high availability and anti-inflammatory activity of aerogel released Zn-species in RAW 264.7 macrophages. For silver, the balance between antibacterial effectiveness versus cytotoxicity remains a significant challenge for which the alginate aerogels need to be improved in the future. An increased knowledge of the transformations that alginate aerogels undergo in the course of the fabrication as well as during wound fluid exposure is necessary when aiming to create advanced, tissue-compatible aerogel products.
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Affiliation(s)
- Claudia Keil
- Department Food Chemistry and Toxicology, Institute of Food Technology and Food Chemistry, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany; (C.H.); (C.R.); (S.L.)
| | - Christopher Hübner
- Department Food Chemistry and Toxicology, Institute of Food Technology and Food Chemistry, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany; (C.H.); (C.R.); (S.L.)
| | - Constanze Richter
- Department Food Chemistry and Toxicology, Institute of Food Technology and Food Chemistry, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany; (C.H.); (C.R.); (S.L.)
| | - Sandy Lier
- Department Food Chemistry and Toxicology, Institute of Food Technology and Food Chemistry, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany; (C.H.); (C.R.); (S.L.)
| | - Lars Barthel
- Applied and Molecular Microbiology, Institute of Biotechnology, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany; (L.B.); (V.M.)
| | - Vera Meyer
- Applied and Molecular Microbiology, Institute of Biotechnology, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany; (L.B.); (V.M.)
| | - Raman Subrahmanyam
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany; (R.S.); (I.S.)
| | - Pavel Gurikov
- Laboratory for Development and Modelling of Novel Nanoporous Materials, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany;
| | - Irina Smirnova
- Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, 21073 Hamburg, Germany; (R.S.); (I.S.)
| | - Hajo Haase
- Department Food Chemistry and Toxicology, Institute of Food Technology and Food Chemistry, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany; (C.H.); (C.R.); (S.L.)
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6
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A case of extensive burn injury with hypercalcemia caused by calcium ion absorption from the wound dressing. BURNS OPEN 2020. [DOI: 10.1016/j.burnso.2019.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Roman M, Rigo C, Castillo-Michel H, Urgast DS, Feldmann J, Munivrana I, Vindigni V, Mičetić I, Benetti F, Barbante C, Cairns WRL. Spatiotemporal distribution and speciation of silver nanoparticles in the healing wound. Analyst 2020; 145:6456-6469. [DOI: 10.1039/d0an00607f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
First observation of AgNPs dynamics in the wounds of real patients through elemental imaging and speciation.
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Affiliation(s)
- Marco Roman
- Ca’ Foscari University of Venice
- Department of Environmental Sciences
- Informatics and Statistics (DAIS)
- 30172 Venice Mestre
- Italy
| | - Chiara Rigo
- Ca’ Foscari University of Venice
- Department of Environmental Sciences
- Informatics and Statistics (DAIS)
- 30172 Venice Mestre
- Italy
| | | | - Dagmar S. Urgast
- University of Aberdeen
- Trace Element Speciation Laboratory
- Aberdeen AB24 3UE
- UK
| | - Jörg Feldmann
- University of Aberdeen
- Trace Element Speciation Laboratory
- Aberdeen AB24 3UE
- UK
- University of Graz
| | - Ivan Munivrana
- University Hospital of Padua
- Burns Centre
- Division of Plastic Surgery
- 35128 Padua
- Italy
| | - Vincenzo Vindigni
- University Hospital of Padua
- Burns Centre
- Division of Plastic Surgery
- 35128 Padua
- Italy
| | - Ivan Mičetić
- University of Padua
- Department of Biomedical Sciences
- 35131 Padua
- Italy
| | - Federico Benetti
- EcamRicert Srl
- European Centre for the Sustainable Impact of Nanotechnology (ECSIN)
- Corso Stati Uniti 4
- 35127 Padua
- Italy
| | - Carlo Barbante
- Ca’ Foscari University of Venice
- Department of Environmental Sciences
- Informatics and Statistics (DAIS)
- 30172 Venice Mestre
- Italy
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8
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Raman S, Keil C, Dieringer P, Hübner C, Bueno A, Gurikov P, Nissen J, Holtkamp M, Karst U, Haase H, Smirnova I. Alginate aerogels carrying calcium, zinc and silver cations for wound care: Fabrication and metal detection. J Supercrit Fluids 2019. [DOI: 10.1016/j.supflu.2019.104545] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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9
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Yu H, Sun H, Yin C, Lin Z. Combination of sulfonamides, silver antimicrobial agents and quorum sensing inhibitors as a preferred approach for improving antimicrobial efficacy against Bacillus subtilis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 181:43-48. [PMID: 31158722 DOI: 10.1016/j.ecoenv.2019.05.064] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/15/2019] [Accepted: 05/21/2019] [Indexed: 06/09/2023]
Abstract
More and more antibacterial agents are used together to treat bacterial infections in diverse fields, but the overuse of antibacterial agents may cause the environmental pollution of antibiotic resistance genes (ARGs). In order to reduce the use of antimicrobial agents, the potential joint effects of quorum-sensing inhibitors (QSIs) and traditional antimicrobial agents have been proposed to be effective. In this study, the joint effects of traditional antimicrobial agents, represented by sulfonamides (SAs) and silver antibacterial agents (silver nitrate (AgNO3) and nanosilver (AgNP, 5 nm)), and five potential QSIs, were investigated using B. subtilis. It was found that AgNP showed higher toxicity than AgNO3, whereas the joint effects on B. subtilis showed no difference between AgNO3 and AgNP when they combined with SAs or QSIs, respectively. In general, AgNO3 and AgNP presented synergetic and additive effects with QSIs, but additive and antagonistic effects with SAs; SAs exhibited synergetic, additive and antagonistic effects with different QSIs whether in binary or ternary mixed system. Moreover, it was found that the use of antimicrobials was reduced and the synergistic combined toxicity of antimicrobial agents on B. subtilis was increased through the addition of the QSIs. This study can offer a valuable reference for the combined medication of the different antimicrobial agents, which will benefit the environmental and human health.
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Affiliation(s)
- Haiyan Yu
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Haoyu Sun
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; Shanghai Key Lab of Chemical Assessment and Sustainability, Shanghai, 200092, China; Post-doctoral Research Station, College of Civil Engineering, Tongji University, Shanghai, 200092, China
| | - Chunsheng Yin
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.
| | - Zhifen Lin
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; Shanghai Key Lab of Chemical Assessment and Sustainability, Shanghai, 200092, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
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10
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Montano E, Vivo M, Guarino AM, di Martino O, Di Luccia B, Calabrò V, Caserta S, Pollice A. Colloidal Silver Induces Cytoskeleton Reorganization and E-Cadherin Recruitment at Cell-Cell Contacts in HaCaT Cells. Pharmaceuticals (Basel) 2019; 12:E72. [PMID: 31096606 PMCID: PMC6631624 DOI: 10.3390/ph12020072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/08/2019] [Accepted: 05/14/2019] [Indexed: 12/14/2022] Open
Abstract
Up until the first half of the 20th century, silver found significant employment in medical applications, particularly in the healing of open wounds, thanks to its antibacterial and antifungal properties. Wound repair is a complex and dynamic biological process regulated by several pathways that cooperate to restore tissue integrity and homeostasis. To facilitate healing, injuries need to be promptly treated. Recently, the interest in alternatives to antibiotics has been raised given the widespread phenomenon of antibiotic resistance. Among these alternatives, the use of silver appears to be a valid option, so a resurgence in its use has been recently observed. In particular, in contrast to ionic silver, colloidal silver, a suspension of metallic silver particles, shows antibacterial activity displaying less or no toxicity. However, the human health risks associated with exposure to silver nanoparticles (NP) appear to be conflicted, and some studies have suggested that it could be toxic in different cellular contexts. These potentially harmful effects of silver NP depend on various parameters including NP size, which commonly range from 1 to 100 nm. In this study, we analyzed the effect of a colloidal silver preparation composed of very small and homogeneous nanoparticles of 0.62 nm size, smaller than those previously tested. We found no adverse effect on the cell proliferation of HaCaT cells, even at high NP concentration. Time-lapse microscopy and indirect immunofluorescence experiments demonstrated that this preparation of colloidal silver strongly increased cell migration, re-modeled the cytoskeleton, and caused recruitment of E-cadherin at cell-cell junctions of human cultured keratinocytes.
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Affiliation(s)
- Elena Montano
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Cintia 21, 80126 Napoli, Italy.
| | - Maria Vivo
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Cintia 21, 80126 Napoli, Italy.
| | - Andrea Maria Guarino
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Cintia 21, 80126 Napoli, Italy.
| | - Orsola di Martino
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Cintia 21, 80126 Napoli, Italy.
| | - Blanda Di Luccia
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Cintia 21, 80126 Napoli, Italy.
| | - Viola Calabrò
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Cintia 21, 80126 Napoli, Italy.
| | - Sergio Caserta
- Dipartimento di Ingegneria Chimica dei Materiali e della Produzione Industriale (DICMAPI) Università degli Studi Napoli Federico II, P.le Tecchio, 80, 80125 Napoli, Italy.
| | - Alessandra Pollice
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Cintia 21, 80126 Napoli, Italy.
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11
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Woodmansey EJ, Roberts CD. Appropriate use of dressings containing nanocrystalline silver to support antimicrobial stewardship in wounds. Int Wound J 2018; 15:1025-1032. [PMID: 30117675 PMCID: PMC7949668 DOI: 10.1111/iwj.12969] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/18/2018] [Accepted: 06/24/2018] [Indexed: 12/16/2022] Open
Abstract
Antimicrobial resistance is an ever-increasing global concern, with the era of untreatable infection becoming a reality. Wound care is no exception, with increasing issues of antibiotic-resistant infections across different wound types and care settings. Antibiotic resistance and stewardship have been the priority for most strategic interventions so far; however, in wound care, alternative or supplementary strategies using antiseptics should be considered. Antiseptics such as silver can provide effective cidal activity across a broad range of wound pathogens, assuming they are used at the correct level for an appropriate duration. Evidence summarised in this manuscript suggests that effective antiseptics, such as nanocrystalline silver, have an increasing body of evidence in support of their use to minimise transmission of antibiotic-resistant organisms as part of institutional infection control procedures and, in addition, through appropriate early use and stewardship on local wound infections, in conjunction with local procedures, to minimise the need for systemic antibiotic therapy. Engagement, alignment, and collaboration between wound care professionals and wider related teams and governments on antimicrobial stewardship, and the potential role of antiseptics within this, will help to generate further evidence for such interventions in the fight against antimicrobial-resistant infections in wound care.
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Affiliation(s)
- Emma J. Woodmansey
- Clinical Scientific and Medical AffairsSmith & Nephew Advanced Wound ManagementHullUK
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12
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Hadrup N, Sharma AK, Loeschner K. Toxicity of silver ions, metallic silver, and silver nanoparticle materials after in vivo dermal and mucosal surface exposure: A review. Regul Toxicol Pharmacol 2018; 98:257-267. [DOI: 10.1016/j.yrtph.2018.08.007] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/13/2018] [Accepted: 08/14/2018] [Indexed: 12/30/2022]
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13
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Jarak I, Carrola J, Barros AS, Gil AM, Pereira MDL, Corvo ML, Duarte IF. From the Cover: Metabolism Modulation in Different Organs by Silver Nanoparticles: An NMR Metabolomics Study of a Mouse Model. Toxicol Sci 2018; 159:422-435. [PMID: 28962526 DOI: 10.1093/toxsci/kfx142] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Although silver nanoparticles (AgNPs) are widely disseminated and show great potential in the biomedical field, there is a recognized need to better understand their action at the metabolic and functional levels. In this work, we have used NMR metabolomics, together with conventional clinical chemistry and histological examination, to characterize multi-organ and systemic metabolic responses to AgNPs intravenously administered to mice at 8 mg/kg body weight (a dose not eliciting overt toxicity). The major target organs of AgNPs accumulation, liver and spleen, showed the greatest metabolic changes, in a clear 2-stage response. In particular, the liver of dosed mice was found to switch from glycogenolysis and lipid storage, at 6 h postinjection, to glycogenesis and lipolysis, at subsequent times up to 48 h. Moreover, metabolites related to antioxidative defense, immunoregulation and detoxification seemed to play a crucial role in avoiding major hepatic damage. The spleen showed several early changes, including depletion of several amino acids, possibly reflecting impairment of hemoglobin recycling, while only a few differences remained at 48 h postinjection. In the heart, the metabolic shift towards TCA cycle intensification and increased ATP production possibly reflected a beneficial adaptation to the presence of AgNPs. On the other hand, the TCA cycle appeared to be down regulated in the lungs of injected mice, which showed signs of inflammation. Thekidneys showed the mildest metabolic response to AgNPs. Overall, this study has shown that NMR metabolomics is a powerful tool to monitor invivo metabolic responses to nanoparticles, revealing unforeseen effects.
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Affiliation(s)
| | | | | | | | - Maria de Lourdes Pereira
- Department of Biology, CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Maria Luisa Corvo
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisboa 1649-003, Portugal
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Choi H, Castillo B, Seminario-Vidal L. Silver absorption in patients with Stevens-Johnson syndrome and toxic epidermal necrolysis treated with silver-impregnated dressings. A case series. Int Wound J 2018; 15:1049-1051. [PMID: 29893032 DOI: 10.1111/iwj.12938] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 04/24/2018] [Indexed: 12/01/2022] Open
Affiliation(s)
- Hyunji Choi
- Department of Dermatology and Cutaneous Surgery, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Brianna Castillo
- Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Lucia Seminario-Vidal
- Department of Dermatology and Cutaneous Surgery, Morsani College of Medicine, University of South Florida, Tampa, Florida
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15
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Brouillard C, Bursztejn AC, Latarche C, Cuny JF, Truchetet F, Goullé JP, Schmutz JL. Silver absorption and toxicity evaluation of silver wound dressings in 40 patients with chronic wounds. J Eur Acad Dermatol Venereol 2018; 32:2295-2299. [PMID: 29730878 DOI: 10.1111/jdv.15055] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 04/16/2018] [Indexed: 12/01/2022]
Abstract
BACKGROUND Silver-containing dressings are considered to be safe even though there have been some reports of complications, including argyria and various organ system dysfunctions. Despite the widespread use of silver dressings, little research has been done regarding the absorption and toxicity of silver. OBJECTIVE We aimed to study the systemic absorption of silver in patients with chronic inflammatory wounds and to determine associated factors of systemic silver absorption and evaluated its association with silver toxicity. PATIENTS AND METHOD Prospective, longitudinal, observational, multicentre, open-label pilot study. Patients from the Dermatology Departments of Lorraine (France) with the following inclusion criteria: (i) a chronic wound of more than 6 weeks and (ii) an ulcer needing silver-containing dressing were included. Before and after 28 days of treatment, clinical characteristics of the wound were recorded; hemogram, hepatic and renal functions, albumin sera and serum silver level were measured. RESULTS Half of the cases displayed raised levels of silver after 1 month of treatment. Predictive factors for systemic silver absorption were wound area, anaemia and malnutrition with anaemia and malnutrition confirmed on multivariate analysis. Wound vascularization may also play a role, as a higher absorption was observed in cases of wound granulation without arterial components. No toxicity was detected. This work has also emphasized the slow elimination of silver from the body. CONCLUSION Both long-term application and iterative treatments with silver dressings should be discouraged, especially in the elderly, who often suffer from malnutrition and anaemia to avoid potential cumulative toxicity.
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Affiliation(s)
- C Brouillard
- Department of Dermatology, Nancy University Hospital, Nancy, France
| | - A-C Bursztejn
- Department of Dermatology, Nancy University Hospital, Nancy, France
| | - C Latarche
- Department of Epidemiology, Nancy University Hospital, Nancy, France
| | - J-F Cuny
- Department of Dermatology, Nancy University Hospital, Nancy, France
| | - F Truchetet
- Department of Dermatology, Metz-Thionville Regional Hospital, Thionville, France
| | - J-P Goullé
- Department of Toxicology, Le Havre Hospital, Le Havre, France
| | - J-L Schmutz
- Department of Dermatology, Nancy University Hospital, Nancy, France
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16
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Jonsson-Schmunk K, Schafer SC, Croyle MA. Impact of nanomedicine on hepatic cytochrome P450 3A4 activity: things to consider during pre-clinical and clinical studies. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2017. [DOI: 10.1007/s40005-017-0376-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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17
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Domeradzka-Gajda K, Nocuń M, Roszak J, Janasik B, Quarles CD, Wąsowicz W, Grobelny J, Tomaszewska E, Celichowski G, Ranoszek-Soliwoda K, Cieślak M, Puchowicz D, Gonzalez JJ, Russo RE, Stępnik M. A study on the in vitro percutaneous absorption of silver nanoparticles in combination with aluminum chloride, methyl paraben or di-n-butyl phthalate. Toxicol Lett 2017; 272:38-48. [PMID: 28315385 DOI: 10.1016/j.toxlet.2017.03.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 03/06/2017] [Accepted: 03/08/2017] [Indexed: 10/20/2022]
Abstract
Some reports indicate that the silver released from dermally applied products containing silver nanoparticles (AgNP) (e.g. wound dressings or cosmetics) can penetrate the skin, particularly if damaged. AgNP were also shown to have cytotoxic and genotoxic activity. In the present study percutaneous absorption of AgNP of two different nominal sizes (Ag15nm or Ag45nm by STEM) and surface modification, i.e. citrate or PEG stabilized nanoparticles, in combination with cosmetic ingredients, i.e. aluminum chloride (AlCl3), methyl paraben (MPB), or di-n-butyl phthalate (DBPH) was assessed using in vitro model based on dermatomed pig skin. The inductively coupled plasma mass spectrometry (ICP-MS) measurements after 24h in receptor fluid indicated low, but detectable silver absorption and no statistically significant differences in the penetration between the 4 types of AgNP studied at 47, 470 or 750μg/ml. Similarly, no significant differences were observed for silver penetration when the AgNP were used in combinations with AlCl3 (500μM), MPB (1250μM) or DBPH (35μM). The measured highest amount of Ag that penetrated was 0.45ng/cm2 (0.365-0.974ng/cm2) for PEG stabilized Ag15nm+MPB.
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Affiliation(s)
| | - Marek Nocuń
- Department of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, Łódź, Poland
| | - Joanna Roszak
- Department of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, Łódź, Poland
| | - Beata Janasik
- Department of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, Łódź, Poland
| | | | - Wojciech Wąsowicz
- Department of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, Łódź, Poland
| | - Jarosław Grobelny
- Department of Materials Technology and Chemistry, University of Łódź, Łódź, Poland
| | - Emilia Tomaszewska
- Department of Materials Technology and Chemistry, University of Łódź, Łódź, Poland
| | - Grzegorz Celichowski
- Department of Materials Technology and Chemistry, University of Łódź, Łódź, Poland
| | | | - Małgorzata Cieślak
- Scientific Department of Unconventional Technologies and Textiles, Textile Research Institute, Łódź, Poland
| | - Dorota Puchowicz
- Scientific Department of Unconventional Technologies and Textiles, Textile Research Institute, Łódź, Poland
| | | | | | - Maciej Stępnik
- Department of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, Łódź, Poland.
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18
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The Effect of Wound Dressings on a Bio-Engineered Human Dermo-Epidermal Skin Substitute in a Rat Model. J Burn Care Res 2017; 38:354-364. [DOI: 10.1097/bcr.0000000000000530] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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19
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Metin-Gürsoy G, Taner L, Barış E. Biocompatibility of nanosilver-coated orthodontic brackets: an in vivo study. Prog Orthod 2016; 17:39. [PMID: 27800593 PMCID: PMC5136532 DOI: 10.1186/s40510-016-0152-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 10/11/2016] [Indexed: 11/14/2022] Open
Abstract
Background Nanosilver particles of which antibacterial and antifungal properties have been shown in various in vitro and in vivo studies are used in many medical and dental fields for the prevention of infection. In this study, it is intended to evaluate the biocompatibility of nanosilver-coated brackets. Methods Nanosilver coating process was applied to the standard orthodontic brackets by a physical vapor deposition system. Brackets were coated with nanosilver particles of 1 μ thickness. A total of 12 Wistar Albino rats were included in the study (six) and control (six) groups. For the study and control groups, four nanosilver-coated and four standard brackets were aseptically implanted subcutaneously in the dorsal region of each rat. The brackets were removed with the surrounding tissues on days 7, 14, 30, and 60. The specimens were evaluated for inflammatory response. Results No significant difference was found in terms of tissue reaction between the study and control groups. On day 7, randomly distributed brown-black granules were seen in the granulation tissue adjacent to the bracket in the study group. These foreign particles continued along the bracket cavity in a few samples, but the inflammatory response was insignificant between the groups. Mast cell count was found to be significantly smaller only on day 7 in the study group than in the control group. Conclusions Nanosilver-coated orthodontic brackets were found to be similar with the standard type concerning inflammation. Further researches are needed with regard to the assessment of the brown-black granules, especially on the deposition of the vessel walls.
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Affiliation(s)
- Gamze Metin-Gürsoy
- Department of Orthodontics, Faculty of Dentistry, Gazi University, Bişkek cad. 1. Sok. No: 4 06510, Emek, Ankara, Turkey.
| | - Lale Taner
- Department of Orthodontics, Faculty of Dentistry, Gazi University, Bişkek cad. 1. Sok. No: 4 06510, Emek, Ankara, Turkey
| | - Emre Barış
- Department of Oral Pathology, Faculty of Dentistry, Gazi University, Bişkek cad. 1. Sok. No: 4 06510, Emek, Ankara, Turkey
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20
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Sonet J, Bulteau AL, Chavatte L, García-Barrera T, Gómez-Ariza JL, Callejón-Leblic B, Nischwitz V, Theiner S, Galvez L, Koellensperger G, Keppler BK, Roman M, Barbante C, Neth K, Bornhorst J, Michalke B. Biomedical and Pharmaceutical Applications. Metallomics 2016. [DOI: 10.1002/9783527694907.ch13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jordan Sonet
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Anne-Laure Bulteau
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Laurent Chavatte
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Tamara García-Barrera
- University of Huelva; Department of Chemistry, Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - José Luis Gómez-Ariza
- University of Huelva, Research Center of Health and Environment (CYSMA); Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - Belén Callejón-Leblic
- University of Huelva; Department of Chemistry, Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - Volker Nischwitz
- Forschungszentrum Jülich; Central Institute for Engineering, Electronics and Analytics; Analytics (ZEA-3), Wilhelm-Johnen-Straße 52428 Jülich Germany
| | - Sarah Theiner
- University of Vienna; Department of Inorganic Chemistry; Waehringer Strasse 42 1090 Vienna Austria
| | - Luis Galvez
- University of Vienna, Research Platform ‘Translational Cancer Therapy Research’; Waehringer Strasse 42 1090 Vienna Austria
| | - Gunda Koellensperger
- University of Vienna, Department of Analytical Chemistry; Waehringer Strasse 38 1090 Vienna Austria
| | - Bernhard K. Keppler
- University of Vienna; Department of Inorganic Chemistry; Waehringer Strasse 42 1090 Vienna Austria
| | - Marco Roman
- Ca' Foscari University of Venice; Department of Environmental Sciences, Informatics and Statistics (DAIS); Via Torino 155 30172 Venice Italy
| | - Carlo Barbante
- National Research Council; Institute for the Dynamics of Environmental Processes (IDPA-CNR); Via Torino 155 30172 Venice Italy
| | - Katharina Neth
- Helmholtz Center Munich, German Research Center for Environmental Health GmbH; Research Unit: Analytical BioGeoChemistry; Ingolstädter Landstraße 1 85764 Neuherberg Germany
| | - Julia Bornhorst
- University of Potsdam; Department of Food Chemistry, Institute of Nutritional Science; Arthur-Scheunert-Allee 114-116 14558 Nuthetal Germany
| | - Bernhard Michalke
- Helmholtz Center Munich, German Research Center for Environmental Health GmbH; Research Unit: Analytical BioGeoChemistry; Ingolstädter Landstraße 1 85764 Neuherberg Germany
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21
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Dayem AA, Kim B, Gurunathan S, Choi HY, Yang G, Saha SK, Han D, Han J, Kim K, Kim JH, Cho SG. Biologically synthesized silver nanoparticles induce neuronal differentiation of SH-SY5Y cells via modulation of reactive oxygen species, phosphatases, and kinase signaling pathways. Biotechnol J 2016. [DOI: 10.1002/biot.201400555] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Roy DC, Tomblyn S, Isaac KM, Kowalczewski CJ, Burmeister DM, Burnett LR, Christy RJ. Ciprofloxacin-loaded keratin hydrogels reduce infection and support healing in a porcine partial-thickness thermal burn. Wound Repair Regen 2016; 24:657-68. [PMID: 27238250 DOI: 10.1111/wrr.12449] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 05/12/2016] [Indexed: 12/31/2022]
Abstract
Infection is a leading cause of morbidity and mortality in burn patients. Current therapies include silver-based creams and dressings, which display limited antimicrobial effectiveness and impair healing. The need exists for a topical, point-of-injury antibiotic treatment that provides sustained antimicrobial activity without impeding wound repair. Fitting this description are keratin-based hydrogels, which are fully biocompatible and support the slow-release of antibiotics. Here we develop a porcine model of an infected partial-thickness burn to test the effects of ciprofloxacin-loaded keratin hydrogels on infection and wound healing. Partial-thickness burns were inoculated with either Pseudomonas aeruginosa or Methicillin-resistant Staphylococcus aureus, resulting in infections that persisted for >2 weeks that exceeded 10(5) and 10(6) cfu per gram of tissue, respectively. Compared to silver sulfadiazine, ciprofloxacin-loaded keratin hydrogel treatment significantly reduced the amount of P. aeruginosa and S. aureus in the burn by >99% on days 4, 7, 11, and 15 postinjury. Further, burns treated with ciprofloxacin-loaded keratin hydrogels exhibited similar healing patterns as uninfected burns with regards to reepithelialization, macrophage recruitment, and collagen deposition and remodeling. The ability of keratin hydrogels to deliver antibiotics to fight infection and support healing of partial-thickness burns make them a strong candidate as a first-line burn therapy.
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Affiliation(s)
- Daniel C Roy
- United States Army Institute of Surgical Research, Fort Sam Houston, Texas.,KeraNetics, LLC, Winston-Salem, North Carolina
| | | | - Kameel M Isaac
- United States Army Institute of Surgical Research, Fort Sam Houston, Texas
| | - Christine J Kowalczewski
- United States Army Institute of Surgical Research, Fort Sam Houston, Texas.,KeraNetics, LLC, Winston-Salem, North Carolina
| | - David M Burmeister
- United States Army Institute of Surgical Research, Fort Sam Houston, Texas
| | | | - Robert J Christy
- United States Army Institute of Surgical Research, Fort Sam Houston, Texas
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23
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Paladini F, Di Franco C, Panico A, Scamarcio G, Sannino A, Pollini M. In Vitro Assessment of the Antibacterial Potential of Silver Nano-Coatings on Cotton Gauzes for Prevention of Wound Infections. MATERIALS 2016; 9:ma9060411. [PMID: 28773531 PMCID: PMC5456794 DOI: 10.3390/ma9060411] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/12/2016] [Accepted: 05/16/2016] [Indexed: 12/20/2022]
Abstract
Multidrug-resistant organisms are increasingly implicated in acute and chronic wound infections, thus compromising the chance of therapeutic options. The resistance to conventional antibiotics demonstrated by some bacterial strains has encouraged new approaches for the prevention of infections in wounds and burns, among them the use of silver compounds and nanocrystalline silver. Recently, silver wound dressings have become widely accepted in wound healing centers and are commercially available. In this work, novel antibacterial wound dressings have been developed through a silver deposition technology based on the photochemical synthesis of silver nanoparticles. The devices obtained are completely natural and the silver coatings are characterized by an excellent adhesion without the use of any binder. The silver-treated cotton gauzes were characterized through scanning electron microscopy (SEM) and thermo-gravimetric analysis (TGA) in order to verify the distribution and the dimension of the silver particles on the cotton fibers. The effectiveness of the silver-treated gauzes in reducing the bacterial growth and biofilm proliferation has been demonstrated through agar diffusion tests, bacterial enumeration test, biofilm quantification tests, fluorescence and SEM microscopy. Moreover, potential cytotoxicity of the silver coating was evaluated through 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide colorimetric assay (MTT) and the extract method on fibroblasts and keratinocytes. Inductively coupled plasma mass spectrometry (ICP-MS) was performed in order to determine the silver release in different media and to relate the results to the biological characterization. All the results obtained were compared with plain gauzes as a negative control, as well as gauzes treated with a higher silver percentage as a positive control.
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Affiliation(s)
- Federica Paladini
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, Lecce 73100, Italy.
| | | | - Angelica Panico
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, Lecce 73100, Italy.
| | - Gaetano Scamarcio
- CNR-IFN U.O.S. Bari, Via Amendola 173, Bari 70126, Italy.
- Dipartimento Interateneo di Fisica, University of Bari Aldo Moro, Via Amendola 173, Bari 70126, Italy.
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, Lecce 73100, Italy.
| | - Mauro Pollini
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, Lecce 73100, Italy.
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24
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Metin-Gürsoy G, Taner L, Akca G. Nanosilver coated orthodontic brackets: in vivo antibacterial properties and ion release. Eur J Orthod 2016; 39:9-16. [PMID: 26787659 DOI: 10.1093/ejo/cjv097] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Silver nanoparticles are currently utilized in the fields of dentistry. The aim of this study was to evaluate the antibacterial properties and ion release of nanosilver coated orthodontic brackets compared to conventional brackets. METHODS Nanosilver coating process was applied to standard orthodontic brackets placed on the mandibular incisors of Wistar Albino rats in the study group and conventional brackets in the control group. Dental plaque, mucosal vestibular smears, saliva, and blood samples were collected from rats at various days. The amounts of nanosilver ions in blood and saliva were measured and microbiological evaluation was made for Streptococcus mutans. For testing cariogenicity, all rats were sacrificed at the end of 75 days under anaesthesia. Teeth were stained using a caries indicator, then the caries ratio was assessed. RESULTS Nanosilver coated orthodontic bracket favoured the inhibition of S.mutans on Day 30 and reduction of caries on the smooth surfaces. The nanosilver amounts in the saliva and serum samples were significantly higher in the study group on Day 7. CONCLUSION It is suggested that nanosilver coated orthodontic brackets, as an antibacterial agent without patient compliance, could be helpful for the prevention of white spot lesions during fixed orthodontic treatment.
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Affiliation(s)
| | | | - Gülçin Akca
- Medical Microbiology, Faculty of Dentistry, Gazi University, Ankara, Turkey
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25
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Rezai MS, Shahmohammadi S. Nosocomial Infections in Iranian Pediatric Patients With Burn Injuries: A Review. JOURNAL OF PEDIATRICS REVIEW 2015. [DOI: 10.17795/jpr-680] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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26
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Percutaneous penetration of silver from a silver containing garment in healthy volunteers and patients with atopic dermatitis. Toxicol Lett 2015; 235:116-22. [DOI: 10.1016/j.toxlet.2015.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 03/26/2015] [Accepted: 03/27/2015] [Indexed: 11/22/2022]
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27
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Bianco C, Kezic S, Crosera M, Svetličić V, Šegota S, Maina G, Romano C, Larese F, Adami G. In vitro percutaneous penetration and characterization of silver from silver-containing textiles. Int J Nanomedicine 2015; 10:1899-908. [PMID: 25792824 PMCID: PMC4364153 DOI: 10.2147/ijn.s78345] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The objective of this study was to determine the in vitro percutaneous penetration of silver and characterize the silver species released from textiles in different layers of full thickness human skin. For this purpose, two different wound dressings and a garment soaked in artificial sweat were placed in the donor compartments of Franz cells for 24 hours. The concentration of silver in the donor phase and in the skin was determined by an electrothermal atomic absorption spectrometer (ET-AAS) and by inductively coupled plasma mass spectrometer (ICP-MS). The characterization of silver species in the textiles and in the skin layers was made by scanning electron microscopy with integrated energy dispersive X-ray spectroscopy (SEM-EDX). Additionally, the size distribution of silver nanoparticles in the textiles was performed by atomic force microscopy (AFM). On the surface of all investigated materials, silver nanoparticles of different size and morphology were found. Released silver concentrations in the soaking solutions (ie, exposure concentration) ranged from 0.7 to 4.7 μg/mL (0.6-4.0 μg/cm(2)), fitting the bactericidal range. Silver and silver chloride aggregates at sizes of up to 1 μm were identified both in the epidermis and dermis. The large size of these particles suggests that the aggregation occurred in the skin. The formation of these aggregates likely slowed down the systemic absorption of silver. Conversely, these aggregates may form a reservoir enabling prolonged release of silver ions, which might lead to local effects.
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Affiliation(s)
- Carlotta Bianco
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste, Italy
| | - Sanja Kezic
- Academic Medical Center, Coronel Institute, University of Amsterdam, Amsterdam, the Netherlands
| | - Matteo Crosera
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste, Italy
| | - Vesna Svetličić
- Laboratory for Bioelectrochemistry and Surface Imaging, Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
| | - Suzana Šegota
- Laboratory for Bioelectrochemistry and Surface Imaging, Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
| | - Giovanni Maina
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Canzio Romano
- Department of Public and Pediatric Health Sciences, University of Turin, Turin, Italy
| | - Francesca Larese
- Unit of Occupational Medicine, University of Trieste, Trieste, Italy ; Department of Medical Sciences, University of Trieste, Trieste, Italy
| | - Gianpiero Adami
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste, Italy
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Łysakowska ME, Ciebiada-Adamiec A, Klimek L, Sienkiewicz M. The activity of silver nanoparticles (Axonnite) on clinical and environmental strains of Acinetobacter spp. Burns 2015; 41:364-71. [DOI: 10.1016/j.burns.2014.07.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/08/2014] [Accepted: 07/13/2014] [Indexed: 11/30/2022]
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Pourzahedi L, Eckelman MJ. Environmental life cycle assessment of nanosilver-enabled bandages. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:361-8. [PMID: 25489789 DOI: 10.1021/es504655y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Over 400 tons of silver nanoparticles (AgNPs) are produced annually, 30% of which are used in medical applications due to their antibacterial properties. The widespread use of AgNPs has implications over the entire life cycle of medical products, from production to disposal, including but not limited to environmental releases of nanomaterials themselves. Here a cradle-to-grave life cycle assessment from nanoparticle synthesis to end-of-life incineration was performed for a commercially available nanosilver-enabled medical bandage. Emissions were linked to multiple categories of environmental impacts, making primary use of the TRACI 2.1 impact assessment method, with specific consideration of nanosilver releases relative to all other (non-nanosilver) emissions. Modeling results suggest that (1) environmental impacts of AgNP synthesis are dominated by upstream electricity production, with the exception of life cycle ecotoxicity where the largest contributor is mining wastes, (2) AgNPs are the largest contributor to impacts of the bandage for all impact categories considered despite low AgNP loading, and (3) impacts of bandage production are several times those bandage incineration, including nanosilver releases to the environment. These results can be used to prioritize research and policy measures in order to improve the overall ecotoxicity burdens of nanoenabled products under a life cycle framework.
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Affiliation(s)
- Leila Pourzahedi
- Department of Civil and Environmental Engineering, Northeastern University , 360 Huntington Avenue, Boston, Massachusetts 02115, United States
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30
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31
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Jeong L, Kim MH, Jung JY, Min BM, Park WH. Effect of silk fibroin nanofibers containing silver sulfadiazine on wound healing. Int J Nanomedicine 2014; 9:5277-87. [PMID: 25484581 PMCID: PMC4238896 DOI: 10.2147/ijn.s71295] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND One of the promising applications of silk fibroin (SF) in biomedical engineering is its use as a scaffolding material for skin regeneration. The purpose of this study was to determine the wound healing effect of SF nanofibrous matrices containing silver sulfadiazine (SSD) wound dressings. METHODS An SF nanofibrous matrix containing SSD was prepared by electrospinning. The cell attachment and spreading of normal human epidermal keratinocytes (NHEK) and normal human epidermal fibroblasts (NHEF) to SF nanofibers containing three different concentrations of SSD contents (0.1, 0.5, and 1.0 wt%) were determined. In addition, a rat wound model was used in this study to determine the wound healing effect of SF nanofibers containing SSD compared with that of Acticoat™, a commercially available wound dressing. RESULTS The number of NHEK and NHEF attached to SF nanofibers containing SSD decreased when the concentration of SSD increased. The number of attached NHEF cells was lower than that of attached NHEK cells. The SF matrix with 1.0 wt% SSD produced faster wound healing than Acticoat, although 1.0 wt% SSD inhibited the attachment of epidermal cells to SF nanofibers in vitro. CONCLUSION The cytotoxic effects of SF nanofibers with SSD should be considered in the development of silver-release dressings for wound healing through its antimicrobial activity. It is challenging to design wound dressings that maximize antimicrobial activity and minimize cellular toxicity.
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Affiliation(s)
- Lim Jeong
- Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon, Seoul, South Korea
| | - Min Hee Kim
- Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon, Seoul, South Korea
| | - Ju-Young Jung
- College of Veterinary Medicine, Chungnam National University, Daejeon, Seoul, South Korea
| | - Byung Moo Min
- Department of Oral Biochemistry, School of Dentistry, Seoul National University, Seoul, South Korea
| | - Won Ho Park
- Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon, Seoul, South Korea
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Smith SD, Dodds A, Dixit S, Cooper A. Role of nanocrystalline silver dressings in the management of toxic epidermal necrolysis (TEN) and TEN/Stevens-Johnson syndrome overlap. Australas J Dermatol 2014; 56:298-302. [PMID: 25368980 DOI: 10.1111/ajd.12254] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 08/12/2014] [Indexed: 12/01/2022]
Abstract
Toxic epidermal necrolysis (TEN) and Stevens-Johnson syndrome (SJS) are severe mucocutaneous eruptions. There is currently no defined optimal approach to wound care. The objective of this study was to evaluate silver dressings in the wound-care management of TEN and SJS/TEN syndrome overlap with a retrospective case review of nine patients with TEN and SJS/TEN overlap presenting to our institution. Nanocrystalline silver dressings appear to be useful in the rapid commencement of healing in these patients. TEN and SJS/TEN overlap are rare conditions. This contributed to a relatively small number of cases included in the study. The ease of application, antimicrobial properties and low frequency of change make nanocrystalline silver dressings ideal in TEN/SJS.
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Affiliation(s)
- Saxon D Smith
- Department of Dermatology, Royal North Shore Hospital, Sydney, Australia.,Gosford Dermatology, Gosford, New South Wales, Australia
| | - Annabel Dodds
- Department of Dermatology, Royal North Shore Hospital, Sydney, Australia
| | - Shreya Dixit
- Department of Dermatology, Royal North Shore Hospital, Sydney, Australia
| | - Alan Cooper
- Department of Dermatology, Royal North Shore Hospital, Sydney, Australia.,Gosford Dermatology, Gosford, New South Wales, Australia
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Silver percutaneous absorption after exposure to silver nanoparticles: A comparison study of three human skin graft samples used for clinical applications. Burns 2014; 40:1390-6. [DOI: 10.1016/j.burns.2014.02.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 12/23/2013] [Accepted: 02/09/2014] [Indexed: 12/22/2022]
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Pfurtscheller K, Petnehazy T, Goessler W, Bubalo V, Kamolz LP, Trop M. Transdermal uptake and organ distribution of silver from two different wound dressings in rats after a burn trauma. Wound Repair Regen 2014; 22:654-9. [DOI: 10.1111/wrr.12209] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 06/12/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Klaus Pfurtscheller
- Children's Burns Unit; University Children's Hospital and Medical University of Graz; Austria
| | - Thomas Petnehazy
- Department of Pediatric and Adolescent Surgery; Medical University of Graz; Austria
| | - Walter Goessler
- Institute of Chemistry, Analytical Chemistry; Karl-Franzens-University of Graz; Austria
| | - Vladimir Bubalo
- Division of Biomedical Research; Medical University of Graz; Graz Austria
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery; Medical University of Graz; Graz Austria
| | - Marija Trop
- Children's Burns Unit; University Children's Hospital and Medical University of Graz; Austria
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Salehi K. AH, Montazer M, Toliyat T. Synthesis and Characterization of Au:Ag Nanoparticles Using Trisodium Citrate and SDS. ACTA ACUST UNITED AC 2014. [DOI: 10.1080/15533174.2013.809738] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Amir H. Salehi K.
- Textile Department, Amirkabir University of Technology, Center of Excellence in Textile, Tehran, Iran
| | - M. Montazer
- Textile Department, Amirkabir University of Technology, Center of Excellence in Textile, Tehran, Iran
| | - T. Toliyat
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Dayem AA, Kim B, Gurunathan S, Choi HY, Yang G, Saha SK, Han D, Han J, Kim K, Kim JH, Cho SG. Biologically synthesized silver nanoparticles induce neuronal differentiation of SH-SY5Y cells via modulation of reactive oxygen species, phosphatases, and kinase signaling pathways. Biotechnol J 2014; 9:934-43. [PMID: 24827677 DOI: 10.1002/biot.201300555] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 02/20/2014] [Accepted: 04/16/2014] [Indexed: 12/28/2022]
Abstract
Nano-scale materials are noted for unique properties, distinct from those of their bulk material equivalents. In this study, we prepared spherical silver nanoparticles (AgNPs) with an average size of about 30 nm and tested their potency to induce neuronal differentiation of SH-SY5Y cells. Human neuroblastoma SH-SY5Y cells are considered an ideal in vitro model for studying neurogenesis, as they can be maintained in an undifferentiated state or be induced to differentiate into neuron-like phenotypes in vitro by several differentiation-inducing agents. Treatment of SH-SY5Y cells by biologically synthesized AgNPs led to cell morphological changes and significant increase in neurite length and enhanced the expression of neuronal differentiation markers such as Map-2, β-tubulin III, synaptophysin, neurogenin-1, Gap-43, and Drd-2. Furthermore, we observed an increase in generation of intracellular reactive oxygen species (ROS), activation of several kinases such as ERK and AKT, and downregulation of expression of dual-specificity phosphatases (DUSPs) in AgNPs-exposed SH-SY5Y cells. Our results suggest that AgNPs modulate the intracellular signaling pathways, leading to neuronal differentiation, and could be applied as promising nanomaterials for stem cell research and therapy.
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Affiliation(s)
- Ahmed Abdal Dayem
- Department of Animal Biotechnology, Animal Resources Research Center, and Incurable Disease Animal model and Stem cell Institute (IDASI), Konkuk University, Seoul, Republic of Korea
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Lin YH, Hsu WS, Chung WY, Ko TH, Lin JH. Evaluation of various silver-containing dressing on infected excision wound healing study. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1375-86. [PMID: 24449026 DOI: 10.1007/s10856-014-5152-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 01/12/2014] [Indexed: 05/08/2023]
Abstract
Silver-containing dressings have been widely used for controlling wound infection. However, the relationship between different concentrations of silver in dressings and their antimicrobial activities and wound-healing efficacies remains unclear. In the present study, we (in cooperation with Bio-medical Carbon Technology) investigated various silver-containing activated carbon fibers to understand the effects of different silver concentrations on the efficacies of a silver containing dressing. Our results indicated that various silver-containing activated carbon fibers exhibited good antibacterial effects and biocompatibility in terms of cell viability and that silver concentration showed a minor influence on cell growth. The infected excision wound model indicated that compared to silver-containing activated carbon fiber and other commercial silver-containing dressings assisted wound healing by promoting granulation and collagen deposition. Meanwhile, the silver ion can only be restrained in epidermis by intact skin. During application on the wound area, a temporary increase of serum silver can be detected, but this elevated serum silver level decreased to a subtle level after the removal of silver-containing activated carbon fiber.
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Affiliation(s)
- Yu-Hsin Lin
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan,
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Use of a silver dressing for management of an open abdominal wound complicated by an enterocutaneous fistula-from hospital to community. J Wound Ostomy Continence Nurs 2013; 40:101-3. [PMID: 23277219 DOI: 10.1097/won.0b013e318279bfa5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Management of an open abdominal wound complicated by an enterocutaneous fistula poses multiple challenges. The enterocutaneous fistula we discuss opened directly into the abdominal wound, without forming a track through skin. CASE We discuss a patient who underwent a Hartmann's procedure for diverticulitis, followed by repeat laparotomies for washout. Due to the edematous bowel and ongoing sepsis, it was not possible to close the abdomen by primary closure. Negative pressure wound therapy (NPWT) has been used successfully in these circumstances. However, the position of an enterocutaneous fistula prevented application of NPWT, and a more conservative approach was used to reduce infection and enable wound closure by secondary intention. CONCLUSION Owing to the presence of an enterocutaneous fistula, we applied a silver-based dressing as an alternative to NPWT. The silver-based dressing was initially applied during the patient's hospital course and continued into the community, ultimately resulting in closure of the wound and fistula.
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Development and application of methods for the determination of silver in polymeric dressings used for the care of burns. Talanta 2013; 115:94-103. [DOI: 10.1016/j.talanta.2013.04.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 04/04/2013] [Accepted: 04/10/2013] [Indexed: 11/21/2022]
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Aquacel(®) Ag dressing versus Acticoat™ dressing in partial thickness burns: a prospective, randomized, controlled study in 100 patients. Part 1: burn wound healing. Burns 2013; 40:416-27. [PMID: 24045072 DOI: 10.1016/j.burns.2013.07.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 07/18/2013] [Accepted: 07/22/2013] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Studies comparing contemporary silver dressings in burns are scarce. METHODS In a prospective, randomized, controlled study, counting 50 patients/research group, we compared two frequently used silver dressings, Acticoat™ and Aquacel(®) Ag, in the management of partial thickness burns with a predicted healing time between 7 and 21 days as assessed by laser Doppler imaging between 48 and 72h after burn. Variables investigated were related to baseline research group characteristics, wound healing, bacteriology, economics, nurse, and patient experience. RESULTS Both research groups were comparably composed taking into account gender, age and burn characteristics. Similar results were obtained as to healing time and bacterial control with both silver dressings. A statistically significant difference in favor of the Aquacel(®) Ag dressing was found for average ease of use (p<0.001), average ease of application (p=0.001), patient pain (p<0.001), patient comfort with the dressing (p=0.017), silver staining (p<0.001), and cost effectiveness (p<0.001). CONCLUSION Both silver dressings resulted in comparable healing times and bacterial control but the Aquacel(®) Ag dressing significantly increased comfort for patients as well as nurses and was significantly more cost-effective than the Acticoat™ dressing for the given indication.
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Active silver nanoparticles for wound healing. Int J Mol Sci 2013; 14:4817-40. [PMID: 23455461 PMCID: PMC3634485 DOI: 10.3390/ijms14034817] [Citation(s) in RCA: 167] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Revised: 02/05/2013] [Accepted: 02/10/2013] [Indexed: 01/04/2023] Open
Abstract
In this preliminary study, the silver nanoparticle (Ag NP)-based dressing, Acticoat™ Flex 3, has been applied to a 3D fibroblast cell culture in vitro and to a real partial thickness burn patient. The in vitro results show that Ag NPs greatly reduce mitochondrial activity, while cellular staining techniques show that nuclear integrity is maintained, with no signs of cell death. For the first time, transmission electron microscopy (TEM) and inductively coupled plasma mass spectrometry (ICP-MS) analyses were carried out on skin biopsies taken from a single patient during treatment. The results show that Ag NPs are released as aggregates and are localized in the cytoplasm of fibroblasts. No signs of cell death were observed, and the nanoparticles had different distributions within the cells of the upper and lower dermis. Depth profiles of the Ag concentrations were determined along the skin biopsies. In the healed sample, most of the silver remained in the surface layers, whereas in the unhealed sample, the silver penetrated more deeply. The Ag concentrations in the cell cultures were also determined. Clinical observations and experimental data collected here are consistent with previously published articles and support the safety of Ag NP-based dressing in wound treatment.
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Walker M, Parsons D. The biological fate of silver ions following the use of silver-containing wound care products - a review. Int Wound J 2012; 11:496-504. [PMID: 23173975 DOI: 10.1111/j.1742-481x.2012.01115.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 09/25/2012] [Accepted: 10/02/2012] [Indexed: 11/27/2022] Open
Abstract
Ionic silver has a long history as an antimicrobial in human health care. This article is a review of the published literature on how ionic silver may enter the body from exposure to silver-containing wound care products and its eventual metabolic fates, in an assessment of the safety during normal use of these products in wound care. Following the application to breached skin, there appears to be little evidence of localised or systemic toxicity, and this is borne out by the continuous use of silver sulfadiazine formulations for more than 50 years. Consequently, following normal use, the risk of silver ion toxicity locally and systemically is considered to be low or negligible.
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Affiliation(s)
- Michael Walker
- ConvaTec Global Development Centre, Deeside, Flintshire, UK
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Abstract
For 2011, approximately 1746 original research articles in burns were published in English in scientific journals. This article reviews those with the most potential impact on for burn therapeutics and outcomes according to the Editor of one of the major journals (Burns) and his colleague. As done previously, articles were found and divided into these topic areas: epidemiology of injury and burn prevention, wound and scar characterisation, acute care and critical care, inhalation injury, infection, psychological considerations, pain and itching management, rehabilitation and long-term outcomes, and burn reconstruction. Each selected article is mentioned briefly with editorial comment.
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Affiliation(s)
- Steven E Wolf
- Division of Burn, Trauma, and Critical Care, Department of Surgery, University of Texas - Southwestern Medical Center, United States.
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Fielding GA, Roy M, Bandyopadhyay A, Bose S. Antibacterial and biological characteristics of silver containing and strontium doped plasma sprayed hydroxyapatite coatings. Acta Biomater 2012; 8:3144-52. [PMID: 22487928 DOI: 10.1016/j.actbio.2012.04.004] [Citation(s) in RCA: 152] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 03/27/2012] [Accepted: 04/02/2012] [Indexed: 02/09/2023]
Abstract
Infection in primary total joint prostheses is estimated to occur in up to 3% of all surgery. As a measure to improve the antimicrobial properties of implant materials silver (Ag) was incorporated into plasma sprayed hydroxyapatite (HA) coatings. To offset potential cytotoxic effects of Ag in the coatings strontium (Sr) was also added as a binary dopant. HA powder was doped with 2.0 wt.% Ag(2)O, 1.0 wt.% SrO and was then heat treated at 800 °C. Titanium substrates were coated using a 30 kW plasma spray system equipped with a supersonic nozzle. X-ray diffraction confirmed the phase purity and high crystallinity of the coatings. Samples were evaluated for mechanical stability by adhesive bond strength testing. The results show that the addition of dopants did not affect the overall bond strength of the coatings. The antibacterial efficacies of the coatings were tested against Pseudomonas aeruginosa. Samples that contained the Ag(2)O dopant were found to be highly effective against bacterial colonization. In vitro cell-material interactions using human fetal osteoblast cells were characterized by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay for cell viability, field emission scanning electron microscopy for cell morphology and confocal imaging for the important differentiation marker alkaline phosphatase (ALP). Our results showed evidence of cytotoxic effects of the Ag-HA coatings, characterized by poor cellular morphology and cell death and nearly complete loss of functional ALP activity. The addition of SrO to the Ag-HA coatings was able to effectively offset these negative effects and improve performance compared with pure HA-coated samples.
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Kulthong K, Maniratanachote R, Kobayashi Y, Fukami T, Yokoi T. Effects of silver nanoparticles on rat hepatic cytochrome P450 enzyme activity. Xenobiotica 2012; 42:854-62. [DOI: 10.3109/00498254.2012.670312] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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46
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Moiemen NS. Response to Letter to the Editor: ‘Acticoat and Smith and Nephew’. Burns 2012. [DOI: 10.1016/j.burns.2011.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Acticoat and Smith and Nephew. Burns 2012; 38:142; author reply 143. [DOI: 10.1016/j.burns.2011.03.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 03/14/2011] [Accepted: 03/21/2011] [Indexed: 11/23/2022]
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