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Liu H, Li P, Tang Z, Liu H, Zhang R, Ge J, Yang H, Ni X, Lin X, Yang L. Study on injectable silver-incorporated calcium phosphate composite with enhanced antibacterial and biomechanical properties for fighting bone cement-associated infections. Colloids Surf B Biointerfaces 2023; 227:113382. [PMID: 37290289 DOI: 10.1016/j.colsurfb.2023.113382] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/28/2023] [Accepted: 05/26/2023] [Indexed: 06/10/2023]
Abstract
Although commonly used in orthopedic surgery, bone cements often face a high risk of post-operative infection. Developing bone cement with antibacterial capability is an effective path for eliminating implant-associated infections. Herein, the potential of silver ions (Ag+) and silver nanoparticles (AgNPs) in modifying CPC for long-term antibacterial property was investigated. Ag+ ions or AgNPs of various concentrations were incorporated in starch-modified calcium phosphate bone cement (CPB) to obtain Ag+-containing (Ag+@CPB) and AgNPs-containing (AgNP@CPB) bone cements. The results showed that all silver-containing CPBs had setting times of about 25-40 min, compressive strengths of greater than 22 MPa, high cytocompatibility but inhibitory effect on Staphylococcus aureus growth. After soaking for 1 week, the mechanical properties and the cytocompatibility of all cements revealed no significant changes, but only CPB with a relatively high content of Ag+ (H-Ag+@CPB) maintained good antibacterial capability over the tested time period. In addition, all the cements showed high injectability and interdigitating capability in cancellous bone and demonstrated augmentation effect on the cannulated pedicle screws fixation in the Sawbones model. In summary, the sustainable antibacterial capability and enhanced biomechanical properties demonstrated that Ag+ ions were more suitable for the fabrication of antibacterial CPC compared to AgNPs. Also, the H-Ag+@CPB, with good injectability, high cytocompatibility, good interdigitating and biomechanical property in cancellous bone, and sustainable antibacterial effects, bears great potential for the treatments of bone infections or implant-associated infections.
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Affiliation(s)
- Huiling Liu
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Peng Li
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Ziniu Tang
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Haoran Liu
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Rui Zhang
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Jun Ge
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Huilin Yang
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China
| | - Xinye Ni
- Second People's Hospital of Changzhou, Nanjing Medical University, Changzhou 213003, China.
| | - Xiao Lin
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China.
| | - Lei Yang
- Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou 215006, China; Center for Health Sciences and Engineering (CHSE), Hebei Key Laboratory of Biomaterials and Smart Theranostics, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin 300131, China.
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Choi YS, Kim YH, An HM, Bae SK, Lee YK. Efficacy of Silver Nanoparticles-Loaded Bone Cement against an MRSA Induced-Osteomyelitis in a Rat Model. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59040811. [PMID: 37109771 PMCID: PMC10146363 DOI: 10.3390/medicina59040811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/12/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023]
Abstract
Background and Objectives: The purpose of this study was to assess the cytotoxicity and antibacterial effects of AgNP-impregnated Tetracalcium phosphate-dicalcium phosphate dihydrate (TTCP-DCPD). Materials and Methods: Using in vitro experiments, the cytotoxicity of AgNP-impregnated TTCP-DCPD against fibroblasts and osteocytes was assessed in terms of cell viability by water-soluble tetrazolium salt assay. To assess antibacterial effects, a disc diffusion test was used; osteomyelitis was induced first in vivo, by injection of methicillin-resistant Staphylococcus aureus into the tibia of rats. AgNP-impregnated TTCP-DCPD bone cement was then applied at various silver concentrations for 3 or 12 weeks. Antibacterial effects were assessed by culturing and reverse transcription-polymerase chain reaction (RT-PCR). For histological observation, the bone tissues were stained using hematoxylin and eosin. Results: Cell viability was decreased by the impregnated bone cement but did not differ according to AgNP concentration. The diameter of the growth-inhibited zone of MRSA was between 4.1 and 13.3 mm on the disks treated with AgNP, indicating antimicrobial effects. In vivo, the numbers of bacterial colonies were reduced in the 12-week treatment groups compared to the 3-week treatment groups. The groups treated with a higher (10×) dose of AgNP (G2-G5) showed a tendency of lower bacterial colony counts compared to the group without AgNP (G1). The PCR analysis results showed a tendency of decreased bacterial gene expression in the AgNP-impregnated TTCP-DCPD groups (G2-G5) compared to the group without AgNP (G1) at 3 and 12 weeks. In the H&E staining, the degree of inflammation and necrosis of the AgNP-impregnated TTCP-DCPD groups (G2-G5) showed a tendency to be lower at 3 and 12 weeks compared to the control group. Our results suggest that AgNP-impregnated TTCP-DCPD cement has antimicrobial effects. Conclusions: This study indicates that AgNP-impregnated TTCP-DCPD bone cement could be considered to treat osteomyelitis.
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Affiliation(s)
- Young Suk Choi
- Department of Biology, Soonchunhyang University, 22, Soonchunhyang-ro, Asan-si 31538, Chungcheoungnam-do, Republic of Korea
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
| | - Young Hwan Kim
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
| | - Hye Min An
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
- Department of Medical Sciences, Soonchunhyang University, 22, Soonchunhyang-ro, Asan-si 31538, Chungcheoungnam-do, Republic of Korea
| | - Sung Kyoung Bae
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
- Department of Medical Sciences, Soonchunhyang University, 22, Soonchunhyang-ro, Asan-si 31538, Chungcheoungnam-do, Republic of Korea
| | - Young Koo Lee
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
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Vanheuverzwijn J, Maillard EE, Mahat A, Fowler L, Monteyne D, Bonnaud L, Landercy N, Hemberg A, Janković A, Meyer F, Mišković-Stanković V, Stevanović M, Mirica C, Pérez-Morga D, Luginbuehl R, Combes C, Furtos G, Fontaine V. Easy, Flexible and Standardizable Anti-Nascent Biofilm Activity Assay to Assess Implant Materials. Microorganisms 2023; 11:microorganisms11041023. [PMID: 37110446 PMCID: PMC10146976 DOI: 10.3390/microorganisms11041023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/29/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
Medical implants have improved the quality of life of many patients. However, surgical intervention may eventually lead to implant microbial contamination. The aims of this research were to develop an easy, robust, quantitative assay to assess surface antimicrobial activities, especially the anti-nascent biofilm activity, and to identify control surfaces, allowing for international comparisons. Using new antimicrobial assays to assess the inhibition of nascent biofilm during persistent contact or after transient contact with bacteria, we show that the 5 cent Euro coin or other metal-based antibacterial coins can be used as positive controls, as more than 4 log reduction on bacterial survival was observed when using either S. aureus or P. aeruginosa as targets. The methods and controls described here could be useful to develop an easy, flexible and standardizable assay to assess relevant antimicrobial activities of new implant materials developed by industries and academics.
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Affiliation(s)
- Jérome Vanheuverzwijn
- Microbiology, Bioorganic and Macromolecular Chemistry Unit, Faculty of Pharmacy, Université libre de Bruxelles (ULB), Boulevard du Triomphe, 1050 Brussels, Belgium
| | - Eloise-Eliane Maillard
- Microbiology, Bioorganic and Macromolecular Chemistry Unit, Faculty of Pharmacy, Université libre de Bruxelles (ULB), Boulevard du Triomphe, 1050 Brussels, Belgium
| | - Amal Mahat
- Microbiology, Bioorganic and Macromolecular Chemistry Unit, Faculty of Pharmacy, Université libre de Bruxelles (ULB), Boulevard du Triomphe, 1050 Brussels, Belgium
| | - Lee Fowler
- Applied Materials Science, The Ångström Laboratory, Department of Engineering Sciences, Uppsala University, P.O. Box 534, 75121 Uppsala, Sweden
| | - Daniel Monteyne
- Laboratoire de Parasitologie Moléculaire, Faculté des Sciences & CMMI, Université Libre de Bruxelles (ULB), CP 300. Rue Prof. Jeener & Brachet, 12, 6041 Gosselies, Belgium
| | - Leïla Bonnaud
- Center of Innovation and Research in Materials and Polymers, Materia Nova Research Center & University of Mons, 7000 Mons, Belgium
| | - Nicolas Landercy
- Center of Innovation and Research in Materials and Polymers, Materia Nova Research Center & University of Mons, 7000 Mons, Belgium
| | - Axel Hemberg
- Center of Innovation and Research in Materials and Polymers, Materia Nova Research Center & University of Mons, 7000 Mons, Belgium
| | - Ana Janković
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Franck Meyer
- Microbiology, Bioorganic and Macromolecular Chemistry Unit, Faculty of Pharmacy, Université libre de Bruxelles (ULB), Boulevard du Triomphe, 1050 Brussels, Belgium
| | - Vesna Mišković-Stanković
- Faculty of Ecology and Environmental Protection, University Union-Nikola Tesla, Cara Dusana 62-64, 11158 Belgrade, Serbia
| | - Milena Stevanović
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Codruta Mirica
- Department of Oral Health, Iuliu Hatieganu University of Medicine and Pharmacy, Victor Babes Street 15, 400012 Cluj-Napoca, Romania
| | - David Pérez-Morga
- Laboratoire de Parasitologie Moléculaire, Faculté des Sciences & CMMI, Université Libre de Bruxelles (ULB), CP 300. Rue Prof. Jeener & Brachet, 12, 6041 Gosselies, Belgium
| | - Reto Luginbuehl
- Department of Biomedical Material Research, University of Bern, 3008 Bern, Switzerland
- Blaser Swisslube, 3415 Hasle-Rüegsau, Switzerland
| | - Christèle Combes
- Centre Inter-Universitaire de Recherche et d'Ingénierie des Matériaux, CIRIMAT, Toulouse INP, Université Toulouse 3 Paul Sabatier, CNRS, Université de Toulouse, 4 allée Emile Monso, BP44362, CEDEX 4, 31030 Toulouse, France
| | - Gabriel Furtos
- Department of Dental Materials, Institute of Research in Chemistry, Babes-Bolyai University-Raluca Ripan, Fantanele Street 30, 400294 Cluj-Napoca, Romania
| | - Véronique Fontaine
- Microbiology, Bioorganic and Macromolecular Chemistry Unit, Faculty of Pharmacy, Université libre de Bruxelles (ULB), Boulevard du Triomphe, 1050 Brussels, Belgium
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Horie M, Chiba R, Umemoto S, Tajika M. Particulate beta-tricalcium phosphate and hydroxyapatite doped with silver promote in vitro osteoblast differentiation in MC3T3-E1 cells. Biomed Mater Eng 2023; 34:385-398. [PMID: 37125541 DOI: 10.3233/bme-211376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
BACKGROUND Calcium phosphates including β-tricalcium phosphate (β-TCP) and hydroxyapatite (HAp) have been widely used for bone regeneration application because of their high osteoconductive activities. In addition, various kinds of inorganic ions enhance differentiation, proliferation, and mineralization of osteoblasts. However, information about the effects of silver-doped β-TCP [β-TCP (Ag)] and HAp [HAp (Ag)] particles on osteogenic differentiation is not available yet. OBJECTIVE We focused on the impact of β-TCP (Ag) and HAp (Ag) particles on the osteogenic differentiation of MC3T3-E1 osteoblast precursor cells. METHODS MC3T3-E1 osteoblast precursor cells were pre-treated by β-TCP (Ag) or HAp (Ag). And then the medium was changed to differentiation medium. Subsequently, osteoblast differentiation-related markers were determined. RESULTS We found that treatment with β-TCP (Ag) or HAp (Ag) particles increased alkaline phosphatase activity in MC3T3-E1 cells. Expression of osteoblast differentiation-related genes also increased after treatment with β-TCP (Ag) or HAp (Ag) particles, a response thought to be regulated by zinc finger-containing transcription factor osterix. The ratio of the receptor activator of nuclear factor kappa-B ligand (RANKL) to osteoprotegerin (OPG) was decreased by β-TCP (Ag) and HAp (Ag) particles. CONCLUSION Silver doping of β-TCP and HAp particles is effective for bone regeneration.
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Affiliation(s)
- Masanori Horie
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Takamatsu, Japan
| | - Ryo Chiba
- Shiraishi Central Laboratories Co., Ltd., Amagasaki, Japan
| | - Shota Umemoto
- Shiraishi Central Laboratories Co., Ltd., Amagasaki, Japan
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Chen Y, Caneli G, Xie D. A PMMA bone cement with improved antibacterial function and flexural strength. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:1398-1414. [PMID: 35321628 DOI: 10.1080/09205063.2022.2056943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/16/2022] [Accepted: 03/20/2022] [Indexed: 06/14/2023]
Abstract
A novel non-leaching antibacterial bone cement has been developed and evaluated. An antibacterial furanone derivative was synthesized and covalently coated onto the surface of alumina filler particles, followed by mixing into a conventional poly(methyl methacrylate) bone cement. Flexural strength and bacterial viability were used to evaluate the modified cements. Effects of coated antibacterial moiety content, coated alumina filler particle size and loading were investigated. Results showed that almost all the modified cements showed higher flexural strength (up to 10%), flexural modulus (up to 18%), and antibacterial activity (up to 67% to S. aureus and up to 84% to E. coli), as compared to original poly(methyl methacrylate) cement. Increasing antibacterial moiety and filler loading significantly enhanced antibacterial activity. On the other hand, increasing coated filler particle size decreased antibacterial activity. Increasing antibacterial moiety content and particle size did not significantly affect flexural strength and modulus. Increasing filler loading did not significantly affect flexural modulus but reduced flexural strength. Antibacterial agent leaching tests showed that it seems no leachable antibacterial component from the modified experimental cement to the surrounding environment. Within the limitations of this study, the modified poly(methyl methacrylate) bone cement may potentially be developed into a clinically useful bone cement for reducing in-surgical and post-surgical infection.
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Affiliation(s)
- Yong Chen
- Department of Biomedical Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University at Indianapolis, Indianapolis, Indiana, USA
- Jinchu University, Hubei, P.R. China
| | - Gulsah Caneli
- Department of Biomedical Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University at Indianapolis, Indianapolis, Indiana, USA
| | - Dong Xie
- Department of Biomedical Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University at Indianapolis, Indianapolis, Indiana, USA
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Is Silver the New Gold? A Systematic Review of the Preclinical Evidence of Its Use in Bone Substitutes as Antiseptic. Antibiotics (Basel) 2022; 11:antibiotics11080995. [PMID: 35892385 PMCID: PMC9329868 DOI: 10.3390/antibiotics11080995] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 07/16/2022] [Accepted: 07/22/2022] [Indexed: 02/01/2023] Open
Abstract
Antibiotic-laden bone substitutes represent a viable option in the treatment of bone and joint infections with bone defects. In particular, the addition of silver ions or silver nanoparticles to bone substitutes to achieve local antiseptic activity could represent a further contribution, also helping to prevent bacterial resistance to antibiotics. An in-depth search of the main scientific databases was performed regarding the use of silver compounds for bone substitution. The available evidence is still limited to the preclinical level: 22 laboratory studies, 2 animal models, and 3 studies, with both in vitro and in vivo analysis, were found on the topic. Numerous biomaterials have been evaluated. In vitro studies confirmed that silver in bone substitutes retains the antibacterial activity already demonstrated in coatings materials. Cytotoxicity was generally found to be low and only related to silver concentrations higher than those sufficient to achieve antibacterial activity. Instead, there are only a few in vivo studies, which appear to confirm antibacterial efficacy, although there is insufficient evidence on the pharmacokinetics and safety profile of the compounds investigated. In conclusion, research on bone substitutes doped with silver is in its early stages, but the preliminary findings seem promising.
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Paluch E, Sobierajska P, Okińczyc P, Widelski J, Duda-Madej A, Krzyżanowska B, Krzyżek P, Ogórek R, Szperlik J, Chmielowiec J, Gościniak G, Wiglusz RJ. Nanoapatites Doped and Co-Doped with Noble Metal Ions as Modern Antibiofilm Materials for Biomedical Applications against Drug-Resistant Clinical Strains of Enterococcus faecalis VRE and Staphylococcus aureus MRSA. Int J Mol Sci 2022; 23:ijms23031533. [PMID: 35163457 PMCID: PMC8836119 DOI: 10.3390/ijms23031533] [Citation(s) in RCA: 4] [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] [Received: 12/30/2021] [Revised: 01/14/2022] [Accepted: 01/26/2022] [Indexed: 12/11/2022] Open
Abstract
The main aim of our research was to investigate antiadhesive and antibiofilm properties of nanocrystalline apatites doped and co-doped with noble metal ions (Ag+, Au+, and Pd2+) against selected drug-resistant strains of Enterococcus faecalis and Staphylococcus aureus. The materials with the structure of apatite (hydroxyapatite, nHAp; hydroxy-chlor-apatites, OH-Cl-Ap) containing 1 mol% and 2 mol% of dopants and co-dopants were successfully obtained by the wet chemistry method. The majority of them contained an additional phase of metallic nanoparticles, in particular, AuNPs and PdNPs, which was confirmed by the XRPD, FTIR, UV–Vis, and SEM–EDS techniques. Extensive microbiological tests of the nanoapatites were carried out determining their MIC, MBC value, and FICI. The antiadhesive and antibiofilm properties of the tested nanoapatites were determined in detail with the use of fluorescence microscopy and computer image analysis. The results showed that almost all tested nanoapatites strongly inhibit adhesion and biofilm production of the tested bacterial strains. Biomaterials have not shown any significant cytotoxic effect on fibroblasts and even increased their survival when co-incubated with bacterial biofilms. Performed analyses confirmed that the nanoapatites doped and co-doped with noble metal ions are safe and excellent antiadhesive and antibiofilm biomaterials with potential use in the future in medical sectors.
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Affiliation(s)
- Emil Paluch
- Department of Microbiology, Faculty of Medicine, Wroclaw Medical University, 50-376 Wroclaw, Poland; (A.D.-M.); (B.K.); (P.K.); (G.G.)
- Correspondence: (E.P.); (R.J.W.)
| | - Paulina Sobierajska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland; (P.S.); (J.C.)
| | - Piotr Okińczyc
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, 50-556 Wroclaw, Poland;
| | - Jarosław Widelski
- Department of Pharmacognosy with the Medicinal Plant Garden, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Anna Duda-Madej
- Department of Microbiology, Faculty of Medicine, Wroclaw Medical University, 50-376 Wroclaw, Poland; (A.D.-M.); (B.K.); (P.K.); (G.G.)
| | - Barbara Krzyżanowska
- Department of Microbiology, Faculty of Medicine, Wroclaw Medical University, 50-376 Wroclaw, Poland; (A.D.-M.); (B.K.); (P.K.); (G.G.)
| | - Paweł Krzyżek
- Department of Microbiology, Faculty of Medicine, Wroclaw Medical University, 50-376 Wroclaw, Poland; (A.D.-M.); (B.K.); (P.K.); (G.G.)
| | - Rafał Ogórek
- Department of Mycology and Genetics, University of Wroclaw, Przybyszewskiego 63, 51-148 Wroclaw, Poland;
| | - Jakub Szperlik
- Faculty of Biological Sciences, Botanical Garden, University of Wroclaw, Sienkiewicza 23, 50-525 Wroclaw, Poland;
| | - Jacek Chmielowiec
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland; (P.S.); (J.C.)
| | - Grażyna Gościniak
- Department of Microbiology, Faculty of Medicine, Wroclaw Medical University, 50-376 Wroclaw, Poland; (A.D.-M.); (B.K.); (P.K.); (G.G.)
| | - Rafal J. Wiglusz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland; (P.S.); (J.C.)
- Correspondence: (E.P.); (R.J.W.)
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Fathi M, El Yacoubi A, El Youbi MS, Chafik El Idrissi B. New silver loaded calcium phosphate bone cement: Characterization and phase composition. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2021.2022676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Majda Fathi
- Laboratory of Advanced Materials and Process Engineering, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Ahmed El Yacoubi
- Laboratory of Advanced Materials and Process Engineering, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
- Laboratory of Applied Chemistry and Environment, Mineral Solid Chemistry, Mohamed First University, Oujda, Morocco
| | - Mohamed Salaheddine El Youbi
- Laboratory of Advanced Materials and Process Engineering, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Brahim Chafik El Idrissi
- Laboratory of Advanced Materials and Process Engineering, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
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Influence of the Microstructure and Silver Content on Degradation, Cytocompatibility, and Antibacterial Properties of Magnesium-Silver Alloys In Vitro. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:8091265. [PMID: 28717409 PMCID: PMC5498933 DOI: 10.1155/2017/8091265] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 04/28/2017] [Accepted: 05/08/2017] [Indexed: 11/17/2022]
Abstract
Implantation is a frequent procedure in orthopedic surgery, particularly in the aging population. However, it possesses the risk of infection and biofilm formation at the surgical site. This can cause unnecessary suffering to patients and burden on the healthcare system. Pure Mg, as a promising metal for biodegradable orthopedic implants, exhibits some antibacterial effects due to the alkaline pH produced during degradation. However, this antibacterial effect may not be sufficient in a dynamic environment, for example, the human body. The aim of this study was to increase the antibacterial properties under harsh and dynamic conditions by alloying silver metal with pure Mg as much as possible. Meanwhile, the Mg-Ag alloys should not show obvious cytotoxicity to human primary osteoblasts. Therefore, we studied the influence of the microstructure and the silver content on the degradation behavior, cytocompatibility, and antibacterial properties of Mg-Ag alloys in vitro. The results indicated that a higher silver content can increase the degradation rate of Mg-Ag alloys. However, the degradation rate could be reduced by eliminating the precipitates in the Mg-Ag alloys via T4 treatment. By controlling the microstructure and increasing the silver content, Mg-Ag alloys obtained good antibacterial properties in harsh and dynamic conditions but had almost equivalent cytocompatibility to human primary osteoblasts as pure Mg.
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Vazquez-Garcia F, Tanomaru-Filho M, Chávez-Andrade GM, Bosso-Martelo R, Basso-Bernardi MI, Guerreiro-Tanomaru JM. Effect of Silver Nanoparticles on Physicochemical and Antibacterial Properties of Calcium Silicate Cements. Braz Dent J 2017; 27:508-514. [PMID: 27982226 DOI: 10.1590/0103-6440201600689] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Accepted: 07/07/2016] [Indexed: 11/22/2022] Open
Abstract
Mineral trioxide aggregate (MTA) and Portland cement (PC) are calcium silicate cements. They have similar physicochemical, mechanical and biological properties. The addition of zirconium oxide (ZrO2) to PC provides radiopacity. Silver nanoparticles (AgNPs) may improve some properties of cements. The aim of this study was to evaluate the effect of AgNPs on physicochemical/mechanical properties and antibacterial activity of white MTA (WMTA) and PC associated with ZrO2. The following materials were evaluated: WMTA; PC 70% + ZrO2 30%; WMTA+ AgNPs; and PC 70% + ZrO2 30% + AgNPs. The study evaluated radiopacity, setting time, pH, compressive strength and solubility. For radiopacity analysis, radiographs were made alongside an aluminum (Al) step wedge. To evaluate the antibacterial activity, direct contact test was performed on planktonic cells and Enterococcus faecalis biofilm induced on bovine root dentin for 14 days. The experimental periods were 5 and 15 h. Data were obtained as CFU mL-1. The obtained data were submitted to ANOVA and Tukey tests (p<0.05). The addition of AgNPs to WMTA increased the pH, lowered the solubility and the initial and final setting times. The addition of AgNPs to PC/ZrO2 maintained the pH, lowered the solubility, and increased the setting time and compressive strength. The radiopacity of all materials was higher than 4 mmAl. The addition of AgNPs promoted an increase in antibacterial activity for calcium silicate cements and favored the physicochemical and mechanical properties of the materials.
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Affiliation(s)
- Fernando Vazquez-Garcia
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil
| | - Mário Tanomaru-Filho
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil
| | - Gisselle Moraima Chávez-Andrade
- Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil
| | - Roberta Bosso-Martelo
- Department of Dental Clinic, Dental School, UFBA - Universidade Federal da Bahia, Salvador, BA, Brazil
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Fabrication of silver nanowires-loaded polydimethylsiloxane film with antimicrobial activities and cell compatibility. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:1011-1017. [DOI: 10.1016/j.msec.2016.04.094] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 03/27/2016] [Accepted: 04/28/2016] [Indexed: 01/21/2023]
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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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