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Zhou H, Yang S, Wei D, Liang C, Yang Q, Yang H, Wang D, Li M, Yang L. Development of hydrofluoric acid-cleaned silicon nitride implants for periprosthetic infection eradication and bone regeneration enhancement. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 127:112241. [PMID: 34225881 DOI: 10.1016/j.msec.2021.112241] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 05/27/2021] [Accepted: 06/02/2021] [Indexed: 12/18/2022]
Abstract
Orthopedic implant is commonly associated with occurrence or relapse of osteomyelitis. This study developed a hydrofluoric acid (HF) cleaned silicon nitride (Si3N4) implant Si3N4_AC for osteomyelitis control and established a rat tibial osteomyelitis model to evaluate its efficacy on eradicating periprosthetic infection and enhancing bone regeneration. In vitro studies revealed Si3N4_AC had improved biocompatibility and inhibited Staphylococcus aureus adhesion. A custom-made Si3N4_AC implant was prepared and inserted into the rat tibia longitudinal cavity inoculated with Staphylococcus aureus. The in vivo bacteriostatic and osteogenic efficacies of Si3N4_AC implant were evaluated by histological, microbiological and Micro-CT analyses and compared with implants of pure Ti and Si3N4 . Si3N4_AC implant group revealed 99.5% inhibition of periprosthetic Staphylococcus aureus compared to the osteomyelitis group after 14 days post-operation. Implant-adhering bacteria density of Si3N4_AC was also much lower than pure Ti and Si3N4. In addition, micro-CT evaluation of peri-implant bone formation under the condition of periprosthetic osteomyelitis after 30 days post-surgery confirmed the osteogenic ability of Si3N4_AC. Taken together, Si3N4_AC can be an effective orthopedic biomaterial to eradicate periprosthetic infection and enhance bone regeneration.
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Affiliation(s)
- Huan Zhou
- Center for Health Science and Engineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, People's Republic of China
| | - Shaofeng Yang
- Department of Orthopaedics, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Donglei Wei
- Department of Orthopaedics, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Chunyong Liang
- Center for Health Science and Engineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, People's Republic of China
| | - Qiang Yang
- Center for Health Science and Engineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, People's Republic of China; Department of Spine Surgery, Tianjin Hospital, Tianjin, People's Republic of China
| | - Huilin Yang
- Department of Orthopaedics, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Donghui Wang
- Center for Health Science and Engineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, People's Republic of China
| | - Mingjun Li
- Institute of Biophysics, College of Sciences, Hebei University of Technology, Tianjin, People's Republic of China
| | - Lei Yang
- Center for Health Science and Engineering, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, People's Republic of China; Department of Orthopaedics, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, People's Republic of China.
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Xu Q, Li X, Jin Y, Sun L, Ding X, Liang L, Wang L, Nan K, Ji J, Chen H, Wang B. Bacterial self-defense antibiotics release from organic-inorganic hybrid multilayer films for long-term anti-adhesion and biofilm inhibition properties. NANOSCALE 2017; 9:19245-19254. [PMID: 29188848 DOI: 10.1039/c7nr07106j] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Implant-associated bacterial infections pose serious medical and financial issues due to the colonization and proliferation of pathogens on the surface of the implant. The as-prepared traditional antibacterial surfaces can neither resist bacterial adhesion nor inhibit the development of biofilm over the long term. Herein, novel (montmorillonite/poly-l-lysine-gentamicin sulfate)8 ((MMT/PLL-GS)8) organic-inorganic hybrid multilayer films were developed to combine enzymatic degradation PLL for on-demand self-defense antibiotics release. Small molecule GS was loaded into the multilayer films during self-assembly and the multilayer films showed pH-dependent and linear growth behavior. The chymotrypsin- (CMS) and bacterial infections-responsive film degradation led to the peeling of the films and GS release. Enzyme-responsive GS release exhibited CMS concentration dependence as measured by the size of the inhibition zone and SEM images. Notably, the obtained antibacterial films showed highly efficient bactericidal activity which killed more than 99.9% of S. aureus in 12 h. Even after 3 d of incubation in S. aureus, E. coli or S. epidermidis solutions, the multilayer films exhibited inhibition zones of more than 1.5 mm in size. Both in vitro and in vivo antibacterial tests indicated good cell compatibility, and anti-inflammatory, and long-term bacterial anti-adhesion and biofilm inhibition properties.
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Affiliation(s)
- Qingwen Xu
- School of Ophthalmology & Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China.
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Alhilou A, Do T, Mizban L, Clarkson BH, Wood DJ, Katsikogianni MG. Physicochemical and Antibacterial Characterization of a Novel Fluorapatite Coating. ACS OMEGA 2016; 1:264-276. [PMID: 27656690 PMCID: PMC5026462 DOI: 10.1021/acsomega.6b00080] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/01/2016] [Indexed: 06/06/2023]
Abstract
Peri-implantitis remains the major impediment to the long-term use of dental implants. With increasing concern over the growth in antibiotic resistance, there is considerable interest in the preparation of antimicrobial dental implant coatings that also induce osseointegration. One such potential coating material is fluorapatite (FA). The aim of this study was to relate the antibacterial effectiveness of FA coatings against pathogens implicated in peri-implantitis to the physicochemical properties of the coating. Ordered and disordered FA coatings were produced on the under and upper surfaces of stainless steel (SS) discs, respectively, using a hydrothermal method. Surface charge, surface roughness, wettability, and fluoride release were measured for each coating. Surface chemistry was assessed using X-ray photoelectron spectroscopy and FA crystallinity using X-ray diffraction. Antibacterial activity against periodontopathogens was assessed in vitro using viable counts, confocal microscopy, and scanning electron microscopy (SEM). SEM showed that the hydrothermal method produced FA coatings that were predominately aligned perpendicular to the SS substrate or disordered FA coatings consisting of randomly aligned rodlike crystals. Both FA coatings significantly reduced the growth of all examined bacterial strains in comparison to the control. The FA coatings, especially the disordered ones, presented significantly lower charge, greater roughness, and higher area when compared to the control, enhancing bacteria-material interactions and therefore bacterial deactivation by fluoride ions. The ordered FA layer reduced not only bacterial viability but adhesion too. The ordered FA crystals produced as a potential novel implant coating showed significant antibacterial activity against bacteria implicated in peri-implantitis, which could be explained by a detailed understanding of their physicochemical properties.
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Affiliation(s)
- Ahmed Alhilou
- Biomaterials
and Tissue Engineering Research Group and Microbiology and Cell Biology Research
Group, School of Dentistry, University of
Leeds, Clarendon Way, Leeds LS2 9LU, West Yorkshire, U.K.
| | - Thuy Do
- Biomaterials
and Tissue Engineering Research Group and Microbiology and Cell Biology Research
Group, School of Dentistry, University of
Leeds, Clarendon Way, Leeds LS2 9LU, West Yorkshire, U.K.
| | - Laith Mizban
- Biomaterials
and Tissue Engineering Research Group and Microbiology and Cell Biology Research
Group, School of Dentistry, University of
Leeds, Clarendon Way, Leeds LS2 9LU, West Yorkshire, U.K.
| | - Brian H. Clarkson
- Cariology,
Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor 48109-1078, United States
| | - David J. Wood
- Biomaterials
and Tissue Engineering Research Group and Microbiology and Cell Biology Research
Group, School of Dentistry, University of
Leeds, Clarendon Way, Leeds LS2 9LU, West Yorkshire, U.K.
| | - Maria G. Katsikogianni
- Biomaterials
and Tissue Engineering Research Group and Microbiology and Cell Biology Research
Group, School of Dentistry, University of
Leeds, Clarendon Way, Leeds LS2 9LU, West Yorkshire, U.K.
- Advanced
Materials Engineering, Faculty of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, U.K.
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