1
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Sapkota A, Mondal A, Chug MK, Brisbois EJ. Biomimetic catheter surface with dual action NO-releasing and generating properties for enhanced antimicrobial efficacy. J Biomed Mater Res A 2023; 111:1627-1641. [PMID: 37209058 PMCID: PMC10524361 DOI: 10.1002/jbm.a.37560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 05/22/2023]
Abstract
Infection of indwelling catheters is a common healthcare problem, resulting in higher morbidity and mortality. The vulnerable population reliant on catheters post-surgery for food and fluid intake, blood transfusion, or urinary incontinence or retention is susceptible to hospital-acquired infection originating from the very catheter. Bacterial adhesion on catheters can take place during the insertion or over time when catheters are used for an extended period. Nitric oxide-releasing materials have shown promise in exhibiting antibacterial properties without the risk of antibacterial resistance which can be an issue with conventional antibiotics. In this study, 1, 5, and 10 wt % selenium (Se) and 10 wt % S-nitrosoglutathione (GSNO)-incorporated catheters were prepared through a layer-by-layer dip-coating method to demonstrate NO-releasing and NO-generating capability of the catheters. The presence of Se on the catheter interface resulted in a 5 times higher NO flux in 10% Se-GSNO catheter through catalytic NO generation. A physiological level of NO release was observed from 10% Se-GSNO catheters for 5 d, along with an enhanced NO generation via the catalytic activity as Se was able to increase NO availability. The catheters were also found to be compatible and stable when subjected to sterilization and storage, even at room temperature. Additionally, the catheters showed a 97.02% and 93.24% reduction in the adhesion of clinically relevant strains of Escherichia coli and Staphylococcus aureus, respectively. Cytocompatibility testing of the catheter with 3T3 mouse fibroblast cells supports the material's biocompatibility. These findings from the study establish the proposed catheter as a prospective antibacterial material that can be translated into a clinical setting to combat catheter-related infections.
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Affiliation(s)
- Aasma Sapkota
- School of Chemical, Materials & Biomedical Engineering, University of Georgia, Athens 30602, United States
| | - Arnab Mondal
- School of Chemical, Materials & Biomedical Engineering, University of Georgia, Athens 30602, United States
| | - Manjyot Kaur Chug
- School of Chemical, Materials & Biomedical Engineering, University of Georgia, Athens 30602, United States
| | - Elizabeth J. Brisbois
- School of Chemical, Materials & Biomedical Engineering, University of Georgia, Athens 30602, United States
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2
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Khzam A, Saunier J, Guilbaud M, Herry JM, Dazzi A, Tortolano L, Carpentier L, Mignot A, Yagoubi N. Surface properties and bacterial adhesion on polyurethane central catheters: Impact of ethanol lock solution. BIOMATERIALS ADVANCES 2023; 146:213281. [PMID: 36634377 DOI: 10.1016/j.bioadv.2023.213281] [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: 06/03/2022] [Revised: 12/08/2022] [Accepted: 01/02/2023] [Indexed: 01/09/2023]
Abstract
It was shown in the literature that ethanol locks have a positive effect on preventing catheter-related infections in patients with central venous catheters without causing any microbial resistance. However, ethanol is known to interact with polyurethanes. The consequences of this interaction on the catheter surface properties were studied as it can impact the biocompatibility of the material and the adhesion phenomena onto the surface. No physical and chemical degradation was put into evidence, but low molecular weight compounds such as additives were extracted from the catheter bulk or migrated and exudated onto its surface. Nevertheless, as far as bacterial adhesion is concerned, after the catheter was locked and the lock removed, the surface modifications promoted no adhesion.
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Affiliation(s)
- A Khzam
- Université Paris-Saclay, Faculté de pharmacie, Matériaux et Santé, 91400 Orsay, France
| | - J Saunier
- Université Paris-Saclay, Faculté de pharmacie, Matériaux et Santé, 91400 Orsay, France.
| | - M Guilbaud
- Université Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, 91300 Massy, France
| | - J M Herry
- Université Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, 91300 Massy, France
| | - A Dazzi
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, 91405 Orsay, France
| | - L Tortolano
- Université Paris-Saclay, Faculté de pharmacie, Matériaux et Santé, 91400 Orsay, France; Department of Pharmacy, Henri Mondor Hospital, Créteil, France
| | | | | | - N Yagoubi
- Université Paris-Saclay, Faculté de pharmacie, Matériaux et Santé, 91400 Orsay, France
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3
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Diaz Perez A, Pysz PM, Usdrowski H, Hunter VK, Stenken JA. Attachment and optimization of Staphylococcus aureus, Staphylococcus epidermidis, and Pseudomonas aeruginosa biofilms to a 3D printed lattice. J Microbiol Methods 2023; 204:106644. [PMID: 36481431 DOI: 10.1016/j.mimet.2022.106644] [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: 03/11/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
A lattice was designed and fabricated using three-dimensional (3D) printing that allows for the facile transfer of biofilms formed from either Staphylococcus aureus, Staphylococcus epidermidis, or Pseudomonas aeruginosa into a fresh cell culture flask. To enhance biofilm production onto the filaments, three protein-based treatments were compared: fetal bovine serum (FBS), bovine serum albumin (BSA), and fibrinogen (Fb). Protein treatments included either supplementing the growth broths or pre-coating the lattice prior to immersion into the broth. S. aureus and P. aeruginosa biofilms were observed on all tested filaments that contained the supplement Fb. S. epidermidis required BSA to form biofilm. Ultimately, polycarbonate (PC) was chosen as the optimal material for lattice creation since it can be autoclaved without warping key design features. In addition, this 3D printed design may facilitate biofilm transfer from the bacterial culture to different cell culture platforms.
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Affiliation(s)
- Alda Diaz Perez
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - Patrick M Pysz
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - Hunter Usdrowski
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - Victoria K Hunter
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - Julie A Stenken
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States.
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4
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Kouijzer JJP, Noordermeer DJ, van Leeuwen WJ, Verkaik NJ, Lattwein KR. Native valve, prosthetic valve, and cardiac device-related infective endocarditis: A review and update on current innovative diagnostic and therapeutic strategies. Front Cell Dev Biol 2022; 10:995508. [PMID: 36263017 PMCID: PMC9574252 DOI: 10.3389/fcell.2022.995508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 09/06/2022] [Indexed: 11/13/2022] Open
Abstract
Infective endocarditis (IE) is a life-threatening microbial infection of native and prosthetic heart valves, endocardial surface, and/or indwelling cardiac device. Prevalence of IE is increasing and mortality has not significantly improved despite technological advances. This review provides an updated overview using recent literature on the clinical presentation, diagnosis, imaging, causative pathogens, treatment, and outcomes in native valve, prosthetic valve, and cardiac device-related IE. In addition, the experimental approaches used in IE research to improve the understanding of disease mechanisms and the current diagnostic pipelines are discussed, as well as potential innovative diagnostic and therapeutic strategies. This will ultimately help towards deriving better diagnostic tools and treatments to improve IE patient outcomes.
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Affiliation(s)
- Joop J. P. Kouijzer
- Thoraxcenter, Department of Biomedical Engineering, Erasmus MC University Medical Center, Rotterdam, Netherlands
- *Correspondence: Joop J. P. Kouijzer,
| | - Daniëlle J. Noordermeer
- Thoraxcenter, Department of Biomedical Engineering, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Wouter J. van Leeuwen
- Department of Cardiothoracic Surgery, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Nelianne J. Verkaik
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Kirby R. Lattwein
- Thoraxcenter, Department of Biomedical Engineering, Erasmus MC University Medical Center, Rotterdam, Netherlands
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5
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Esakkiraj P, Bharathi C, Ayyanna R, Jha N, Panigrahi A, Karthe P, Arul V. Functional and molecular characterization of a cold-active lipase from Psychrobacter celer PU3 with potential a*ntibiofilm property. Int J Biol Macromol 2022; 211:741-753. [PMID: 35504418 DOI: 10.1016/j.ijbiomac.2022.04.174] [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: 01/07/2022] [Revised: 04/07/2022] [Accepted: 04/24/2022] [Indexed: 11/05/2022]
Abstract
The lipase gene from Psychrobacter celer PU3 was cloned into pET-28a(+) expression vector and overexpressed in E. coli BL21 (DE3) pLysS cells. The purified Psychrobacter celer lipase (PCL) was characterized as an alkaline active enzyme and has a molecular mass of around 30 kDa. The PCL was active even at a low temperature and the optimum range was observed between 10 and 40 °C temperatures. MALDI-TOF and phylogenetic analysis ensued that Psychrobacter celer PU3 lipase (PCL) was closely related to P. aureginosa lipase (PAL). MD simulation results suggests that temperature change did not affect overall structure of PCL, but it may alter temperature- dependent PCL structural changes. R1 (129-135 AA) and R2 (187-191 AA) regions could be important for temperature-dependent PCL function as they fluctuate much at 35 °C temperature. PMSF completely inhibited PCL lipase activity and it demonstrates the presence of serine residues in the active site of PCL. PCL is moderately halophilic and most of the tested organic solvents found to be inhibiting the lipase activity except the solvents ethanol and methanol. PCL activity was increased with surfactants (SDS and CTAB) and bleaching agents (hydrogen peroxide). The effect of different metal ions on PCL resulted that only mercuric chloride was found as the enhancer of the lipase activity. Antibiofilm property of PCL was evaluated against pathogenic Vibrio parahaemolyticus isolated from the diseased shrimp and MIC value was 500 U. PCL significantly altered the morphology and biofilm density of V. parahaemolyticus and the same was observed through scanning electron microscope (SEM) and confocal laser scanning microscope (CLSM) imaging. RT-PCR analysis revealed that the mRNA expression level of biofilm, colony morphology and major toxin-related (aphA, luxS, opaR, tolC, toxR) genes of V. parahaemolyticus were significantly downregulated with PCL treatment.
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Affiliation(s)
- Palanichamy Esakkiraj
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry 605014, India; Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, R. A. Puram, Chennai 600 028, India
| | - Christian Bharathi
- CAS in Crystallography and Biophysics, University of Madras, Chennai 600025, India
| | - Repally Ayyanna
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Natwar Jha
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Akshaya Panigrahi
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, R. A. Puram, Chennai 600 028, India
| | - Ponnuraj Karthe
- CAS in Crystallography and Biophysics, University of Madras, Chennai 600025, India
| | - Venkatesan Arul
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry 605014, India.
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6
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Haloalkaline Lipase from Bacillus flexus PU2 Efficiently Inhibits Biofilm Formation of Aquatic Pathogen Vibrio parahaemolyticus. Probiotics Antimicrob Proteins 2022; 14:664-674. [DOI: 10.1007/s12602-022-09908-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/09/2022] [Indexed: 10/18/2022]
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7
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Investigation of the Long-Term Antibacterial Properties of Titanium by Two-Step Micro-Arc Oxidation Treatment. COATINGS 2021. [DOI: 10.3390/coatings11070798] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Recently, biofilm formation caused by bacterial adhesion and colonization has been recognized as the major cause of failure in orthopedic and dental implant surgeries. In this study, a customized micro-arc oxidation (MAO) treatment technique was developed to obtain desirable antibacterial properties on Ti surfaces. The two-step MAO treatment was applied in the fabrication of specimens with Ag and with/without Zn in their surface oxide layer. In order to simulate practical usage, surface analyses and immersion tests were performed to evaluate the incorporation of Ag and Zn into the resulting oxide layer and ion release behavior, respectively. Additionally, the antibacterial properties of the specimens after long-term immersion in physiological saline were evaluated using Gram-negative facultative anaerobic bacteria. The MAO-treated specimens containing Ag and Zn exhibited excellent antibacterial properties against Escherichia coli, which were sustained even after 6 months of immersion in physiological saline to simulate practical usage. Moreover, the Ag ions released from the surface oxide indicate the antibacterial properties of the specimen in the early stage, while the release of the corrosion products of Zn demonstrates its antibacterial properties in the later stage.
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8
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Soylu HM, Chevallier P, Copes F, Ponti F, Candiani G, Yurt F, Mantovani D. A Novel Strategy to Coat Dopamine-Functionalized Titanium Surfaces With Agarose-Based Hydrogels for the Controlled Release of Gentamicin. Front Cell Infect Microbiol 2021; 11:678081. [PMID: 34178721 PMCID: PMC8224171 DOI: 10.3389/fcimb.2021.678081] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/14/2021] [Indexed: 12/17/2022] Open
Abstract
Introduction The use of spinal implants for the treatment of back disorders is largely affected by the insurgence of infections at the implantation site. Antibacterial coatings have been proposed as a viable solution to limit such infections. However, despite being effective at short-term, conventional coatings lack the ability to prevent infections at medium and long-term. Hydrogel-based drug delivery systems may represent a solution controlling the release of the loaded antibacterial agents while improving cell integration. Agarose, in particular, is a biocompatible natural polysaccharide known to improve cell growth and already used in drug delivery system formulations. In this study, an agarose hydrogel-based coating has been developed for the controlled release of gentamicin (GS). Methods Sand blasted Ti6Al4V discs were grafted with dopamine (DOPA) solution. After, GS loaded agarose hydrogels have been produced and additioned with tannic acid (TA) and calcium chloride (CaCl2) as crosslinkers. The different GS-loaded hydrogel formulations were deposited on Ti6Al4V-DOPA surfaces, and allowed to react under UV irradiation. Surface topography, wettability and composition have been analyzed with profilometry, static contact angle measurement, XPS and FTIR spectroscopy analyses. GS release was performed under pseudo-physiological conditions up to 28 days and the released GS was quantified using a specific ELISA test. The cytotoxicity of the produced coatings against human cells have been tested, along with their antibacterial activity against S. aureus bacteria. Results A homogeneous coating was obtained with all the hydrogel formulations. Moreover, the coatings presented a hydrophilic behavior and micro-scale surface roughness. The addition of TA in the hydrogel formulations showed an increase in the release time compared to the normal GS-agarose hydrogels. Moreover, the GS released from these gels was able to significantly inhibit S. aureus growth compared to the GS-agarose hydrogels. The addition of CaCl2 to the gel formulation was able to significantly decrease cytotoxicity of the TA-modified hydrogels. Conclusions Due to their surface properties, low cytotoxicity and high antibacterial effects, the hereby proposed gentamicin-loaded agarose-hydrogels provide new insight, and represent a promising approach for the surface modification of spinal implants, greatly impacting their application in the orthopedic surgical scenario.
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Affiliation(s)
- H Melis Soylu
- Department Biomedical Technologies, The Institute of Natural and Applied Sciences, Ege University, Bornova, Turkey
| | - Pascale Chevallier
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier 1, Department of Min-Met-Materials Eng., University Hospital Research Center, Regenerative Medicine, Laval University, Quebec City, QB, Canada
| | - Francesco Copes
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier 1, Department of Min-Met-Materials Eng., University Hospital Research Center, Regenerative Medicine, Laval University, Quebec City, QB, Canada
| | - Federica Ponti
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier 1, Department of Min-Met-Materials Eng., University Hospital Research Center, Regenerative Medicine, Laval University, Quebec City, QB, Canada.,GenT LΛB and µBioMI LΛB, Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Milan, Italy
| | - Gabriele Candiani
- GenT LΛB and µBioMI LΛB, Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Milan, Italy
| | - Fatma Yurt
- Department Biomedical Technologies, The Institute of Natural and Applied Sciences, Ege University, Bornova, Turkey.,Department Nuclear Applications, Institute Nuclear Science, Ege University, Bornova, Turkey
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier 1, Department of Min-Met-Materials Eng., University Hospital Research Center, Regenerative Medicine, Laval University, Quebec City, QB, Canada
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9
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Konduri R, Saiabhilash CR, Shivaji S. Biofilm-Forming Potential of Ocular Fluid Staphylococcus aureus and Staphylococcus epidermidis on Ex Vivo Human Corneas from Attachment to Dispersal Phase. Microorganisms 2021; 9:microorganisms9061124. [PMID: 34067392 PMCID: PMC8224674 DOI: 10.3390/microorganisms9061124] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 12/14/2022] Open
Abstract
The biofilm-forming potential of Staphylococcus aureus and Staphylococcus epidermidis, isolated from patients with Endophthalmitis, was monitored using glass cover slips and cadaveric corneas as substrata. Both the ocular fluid isolates exhibited biofilm-forming potential by the Congo red agar, Crystal violet and 2,3-bis (2-methoxy-4-nitro-5-sulfophenyl)-5-(phenylamino) carbonyl-2H-tetra-zolium hydroxide (XTT) methods. Confocal microscopy demonstrated that the thickness of the biofilm increased from 4–120 h of biofilm formation. Scanning electron microscopic studies indicated that the biofilms grown on cover slips and ex vivo corneas of both the isolates go through an adhesion phase at 4 h followed by multilayer clumping of cells with intercellular connections and copious amounts of extracellular polymeric substance. Clumps subsequently formed columns and eventually single cells were visible indicative of dispersal phase. Biofilm formation was more rapid when the cornea was used as a substratum. In the biofilms grown on corneas, clumping of cells, formation of 3D structures and final appearance of single cells indicative of dispersal phase occurred by 48 h compared to 96–120 h when biofilms were grown on cover slips. In the biofilm phase, both were several-fold more resistant to antibiotics compared to planktonic cells. This is the first study on biofilm forming potential of ocular fluid S. aureus and S. epidermidis on cadaveric cornea, from attachment to dispersal phase of biofilm formation.
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10
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Kim J, Ren D, Gilbert JL. Cytotoxic effect of galvanically coupled magnesium-titanium particles on Escherichia coli. J Biomed Mater Res B Appl Biomater 2021; 109:2162-2173. [PMID: 33979012 DOI: 10.1002/jbm.b.34864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 02/04/2021] [Accepted: 04/28/2021] [Indexed: 11/06/2022]
Abstract
Orthopedic device-related infections (ODRIs) are difficult to control due to microbial biofilm formation and associated with high-level resistance to conventional antibiotics. In many cases, the only treatment option for ODRI is explantation. Previous studies have shown that application of cathodic potentials at the metal surface can eradicate biofilms, and Mg and Mg-Ti particles have the same effect as cathodic potentials. This study investigated the effects of Mg and Mg-Ti particles on established biofilms and planktonic cells E. coli. Bacterial cultures with developed biofilms or planktonic cells were treated with Mg or Mg-Ti particles, and the viability were assessed using flow cytometry or visual assessment methods (i.e., observation from SEM images and opacity of the solution). It was found that viability of biofilms treated with 16.67 mg/ml of Mg was 2.8 ± 0.96% at the end of 6-hr killing compared to untreated controls. This extent of killing was more significant compared to 24-hr grown biofilms treated with ofloxacin, an antibiotic known to be effective against these bacteria. Biofilms treated with 50 and 100 μg/ml of ofloxacin had 62 ± 4.6% and 52 ± 19.3% survival, respectively, where ofloxacin at these concentrations is known to kill planktonic counterparts very effectively. Inhibition zone tests revealed that biofilms within 2 mm of Mg or Mg-Ti particle clusters were effectively killed. These results demonstrated the potential of Mg or Mg-Ti particles in killing microbial biofilms and potential for controlling ODRI.
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Affiliation(s)
- Jua Kim
- Department of Biomedical and Chemical Engineering, College of Engineering and Computer Science, Syracuse University, Syracuse, New York, USA.,Syracuse Biomaterials Institute, College of Engineering and Computer Science, Syracuse University, Syracuse, New York, USA.,Shenzhen Key Laboratory of Biomimetic Materials and Cellular Immunomodulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Dacheng Ren
- Department of Biomedical and Chemical Engineering, College of Engineering and Computer Science, Syracuse University, Syracuse, New York, USA.,Syracuse Biomaterials Institute, College of Engineering and Computer Science, Syracuse University, Syracuse, New York, USA
| | - Jeremy L Gilbert
- Department of Biomedical and Chemical Engineering, College of Engineering and Computer Science, Syracuse University, Syracuse, New York, USA.,Syracuse Biomaterials Institute, College of Engineering and Computer Science, Syracuse University, Syracuse, New York, USA.,Department of Bioengineering, Clemson University, Clemson, South Carolina, USA.,Clemson-Medical University of South Carolina Bioengineering Program, Charleston, South Carolina, USA
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11
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Maale GE, Eager JJ, Mohammadi DK, Calderon FA. Elution Profiles of Synthetic CaSO 4 Hemihydrate Beads Loaded with Vancomycin and Tobramycin. Eur J Drug Metab Pharmacokinet 2021; 45:547-555. [PMID: 32328932 PMCID: PMC7359161 DOI: 10.1007/s13318-020-00622-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Backgrounds and Objectives The use of local antibiotic delivery vehicles is common in the management of biofilm-related infections as they provide high concentrations of local antibiotics while simultaneously avoiding complications from systemic toxicity. We present a 100% pure synthetic calcium sulfate hemi-hydrate mixed with 240 mg tobramycin and 500 mg vancomycin per 10 cc mixture for use in revision surgeries of periprosthetic joint infections (PJIs). The purified carrier demonstrates bioabsorbablity, promotion of bone growth, a physiologically favorable pH, and hydrophilicity. These unique properties may alleviate persistent postoperative wound drainage seen in patients with PJI. Our questions consist of two parts: (1) does the novel calcium sulfate carrier provide therapeutic concentrations of antibiotic locally that can kill biofilm related infections? (2) Are serum concentrations of antibiotic significant to cause concern for systemic toxicity? Methods To address these questions, we assayed the elution of antibiotic concentrations obtained from surgical drains and serum among 50 patients in the first 5 postoperative days. Results The elution of vancomycin and tobramycin was greatest on day 1 compared with those concentrations obtained on days 2, 3, 4, and 5; serum concentrations were largely undetectable. Our findings demonstrate that this calcium sulfate preparation provides therapeutic delivery of vancomycin and tobramycin locally at log 2–3 above the minimum inhibitory concentration (MIC), while avoiding toxic serum concentrations. Conclusions When used in one-stage revision arthroplasties, the bioabsorbable, purified carrier delivers high concentrations of antibiotic while avoiding systemic toxicity.
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Affiliation(s)
- Gerhard E Maale
- Orthopaedic Oncology, Dallas Fort Worth Sarcoma Group, 4708 Alliance Blvd Ste 710., Plano, TX, 75093, USA.
| | - John J Eager
- University of Texas Medical School At Houston, 6431 Fannin Street, Box 20708, Houston, TX, 77225, USA
| | - Daniel K Mohammadi
- Orthopaedic Oncology, Dallas Fort Worth Sarcoma Group, 4708 Alliance Blvd Ste 710., Plano, TX, 75093, USA
| | - Flavio A Calderon
- Orthopaedic Oncology, Dallas Fort Worth Sarcoma Group, 4708 Alliance Blvd Ste 710., Plano, TX, 75093, USA
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12
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Shimabukuro M, Tsutsumi H, Tsutsumi Y, Manaka T, Chen P, Ashida M, Ishikawa K, Katayama H, Hanawa T. Enhancement of antibacterial property of titanium by two-step micro arc oxidation treatment. Dent Mater J 2020; 40:592-598. [PMID: 33361664 DOI: 10.4012/dmj.2020-188] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A customized micro arc oxidation (MAO) treatment technique was developed to obtain desirable antibacterial properties on titanium surfaces. The two-step MAO treatment was applied to fabricate a specimen containing both Ag and Zn in its surface oxide layer. Surface analyses and metal-ion release tests were performed to evaluate the presence of Ag and Zn and the ion release behavior for simulating practical usage, respectively. Additionally, the antibacterial properties of the specimens were also evaluated using gram-negative facultative anaerobic bacteria. The MAO-treated specimens containing both Ag and Zn showed excellent antibacterial properties against Escherichia coli, and the properties were sustained even after 28 days of immersion in physiological saline to simulate the living environment.
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Affiliation(s)
- Masaya Shimabukuro
- Department of Biomaterials, Faculty of Dental Science, Kyushu University.,Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
| | - Harumi Tsutsumi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU)
| | - Yusuke Tsutsumi
- Research Center for Structural Materials, National Institute for Materials Science (NIMS)
| | - Tomoyo Manaka
- Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
| | - Peng Chen
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU)
| | - Maki Ashida
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU)
| | - Kunio Ishikawa
- Department of Biomaterials, Faculty of Dental Science, Kyushu University
| | - Hideki Katayama
- Research Center for Structural Materials, National Institute for Materials Science (NIMS)
| | - Takao Hanawa
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU)
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13
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Shimabukuro M. Antibacterial Property and Biocompatibility of Silver, Copper, and Zinc in Titanium Dioxide Layers Incorporated by One-Step Micro-Arc Oxidation: A Review. Antibiotics (Basel) 2020; 9:E716. [PMID: 33092058 PMCID: PMC7589568 DOI: 10.3390/antibiotics9100716] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 02/07/2023] Open
Abstract
Titanium (Ti) and its alloys are commonly used in medical devices. However, biomaterial-associated infections such as peri-implantitis and prosthetic joint infections are devastating and threatening complications for patients, dentists, and orthopedists and are easily developed on titanium surfaces. Therefore, this review focuses on the formation of biofilms on implant surfaces, which is the main cause of infections, and one-step micro-arc oxidation (MAO) as a coating technology that can be expected to prevent infections due to the implant. Many researchers have provided sufficient data to prove the efficacy of MAO for preventing the initial stages of biofilm formation on implant surfaces. Silver (Ag), copper (Cu), and zinc (Zn) are well used and are incorporated into the Ti surface by MAO. In this review, the antibacterial properties, cytotoxicity, and durability of these elements on the Ti surface incorporated by one-step MAO will be summarized. This review is aimed at enhancing the importance of the quantitative control of Ag, Cu, and Zn for their use in implant surfaces and the significance of the biodegradation behavior of these elements for the development of antibacterial properties.
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Affiliation(s)
- Masaya Shimabukuro
- Department of Biomaterials, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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14
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Lin J, Nguyen NYT, Zhang C, Ha A, Liu HH. Antimicrobial Properties of MgO Nanostructures on Magnesium Substrates. ACS OMEGA 2020; 5:24613-24627. [PMID: 33015479 PMCID: PMC7528336 DOI: 10.1021/acsomega.0c03151] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/25/2020] [Indexed: 05/19/2023]
Abstract
Magnesium (Mg) and its alloys have attracted increasing attention in recent years as medical implants for repairing musculoskeletal injuries because of their promising mechanical and biological properties. However, rapid degradation of Mg and its alloys in physiological fluids limited their clinical translation because the accumulation of hydrogen (H2) gas and fast release of OH- ions could adversely affect the healing process. Moreover, infection is a major concern for internally implanted devices because it could lead to biofilm formation, prevent host cell attachment on the implants, and interfere osseointegration, resulting in implant failure or other complications. Fabricating nanostructured magnesium oxide (MgO) on magnesium (Mg) substrates is promising in addressing both problems because it could slow down the degradation process and improve the antimicrobial activity. In this study, nanostructured MgO layers were created on Mg substrates using two different surface treatment techniques, i.e., anodization and electrophoretic deposition (EPD), and cultured with Staphylococcus aureus in vitro to determine their antimicrobial properties. At the end of the 24-h bacterial culture, the nanostructured MgO layers on Mg prepared by anodization or EPD both showed significant bactericidal effect against S. aureus. Thus, nanostructured MgO layers on Mg are promising for reducing implant-related infections and complications and should be further explored for clinical translation toward antimicrobial biodegradable implants.
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Affiliation(s)
- Jiajia Lin
- Material
Science & Engineering Program, University
of California, Riverside, 900 University Avenue, Riverside, California 92521, United States
| | - Nhu-Y Thi Nguyen
- Microbiology
Program, University of California, Riverside, 900 University Avenue, Riverside, California 92521, United States
| | - Chaoxing Zhang
- Material
Science & Engineering Program, University
of California, Riverside, 900 University Avenue, Riverside, California 92521, United States
| | - Alexandra Ha
- Department
of Bioengineering, University of California,
Riverside, 900 University
Avenue, Riverside, California 92521, United States
| | - Huinan Hannah Liu
- Material
Science & Engineering Program, University
of California, Riverside, 900 University Avenue, Riverside, California 92521, United States
- Microbiology
Program, University of California, Riverside, 900 University Avenue, Riverside, California 92521, United States
- Department
of Bioengineering, University of California,
Riverside, 900 University
Avenue, Riverside, California 92521, United States
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15
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Shimabukuro M, Tsutsumi Y, Nozaki K, Chen P, Yamada R, Ashida M, Doi H, Nagai A, Hanawa T. Investigation of antibacterial effect of copper introduced titanium surface by electrochemical treatment against facultative anaerobic bacteria. Dent Mater J 2020; 39:639-647. [PMID: 32249235 DOI: 10.4012/dmj.2019-178] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study investigated the efficacy of copper (Cu) as an antibacterial element incorporated on titanium (Ti) surface by electrochemical treatment. Cu was incorporated onto Ti surface by micro-arc oxidation (MAO). A small amount of Cu was incorporated into the oxide layer and was found to be in oxidized states. Cu-incorporated samples exhibited no-harmful effect on the proliferation of osteoblastlike cells. Moreover, the difference in antibacterial property between fresh and incubated samples was evaluated using gram-positive and gram-negative facultative anaerobic bacteria. The specific antibacterial property of Cu incorporated into the Ti surface were confirmed. The antibacterial property prolonged upon immersion in physiological saline for 28 days. In other words, MAO-treated Ti containing Cu in this study is expected to achieve long-term antibacterial property in practical usage.
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Affiliation(s)
- Masaya Shimabukuro
- Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.,Department of Biomaterials, Faculty of Dental Science, Kyushu University
| | - Yusuke Tsutsumi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University.,Research Center for Structural Materials, National Institute for Materials Science (NIMS)
| | - Kosuke Nozaki
- Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Peng Chen
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Risa Yamada
- Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Maki Ashida
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Hisashi Doi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Akiko Nagai
- Department of Anatomy, School of Dentistry, Aichi Gakuin University
| | - Takao Hanawa
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
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16
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Dhar Y, Han Y. Current developments in biofilm treatments: Wound and implant infections. ENGINEERED REGENERATION 2020. [DOI: 10.1016/j.engreg.2020.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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17
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Hou W, Liu Y, Wu S, Zhang H, Guo B, Zhang B, Qin XJ, Li H. Preadsorption of Serum Proteins Regulates Bacterial Infections and Subsequent Macrophage Phagocytosis on Biomaterial Surfaces. ACS APPLIED BIO MATERIALS 2019; 2:5957-5964. [DOI: 10.1021/acsabm.9b00890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Wenjia Hou
- Key laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi Liu
- Key laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Songze Wu
- Key laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Haitao Zhang
- Key laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Bing Guo
- Shanghai Key Laboratory of Stomatology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Botao Zhang
- Key laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Xing-jun Qin
- Shanghai Key Laboratory of Stomatology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Hua Li
- Key laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
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18
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Chemical and Biological Roles of Zinc in a Porous Titanium Dioxide Layer Formed by Micro-Arc Oxidation. COATINGS 2019. [DOI: 10.3390/coatings9110705] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This study investigated the time transient effect of zinc (Zn) in the porous titanium dioxide formed by micro-arc oxidation (MAO) treatment routinely performed for Zn-containing electrolytes. The aim of our analysis was to understand the changes in both the chemical and biological properties of Zn in physiological saline. The morphology of the Zn-incorporated MAO surface did not change, and a small amount of Zn ions were released at early stages of incubation in saline. We observed a decrease in Zn concentration in the oxide layer because its release and chemical state (Zn2+ compound to ZnO) changed over time during incubation in saline. In addition, the antibacterial property of the Zn-incorporated MAO surface developed at late periods after the incubation process over a course of 28 days. Furthermore, osteogenic cells were able to proliferate and were calcified on the specimens with Zn. The changes related to Zn in saline had non-toxic effects on the osteogenic cells. In conclusion, the time transient effect of Zn in a porous titanium dioxide layer was beneficial to realize dual functions, namely the antibacterial property and osteogenic cell compatibility. Our study suggests the importance of the chemical state changes of Zn to control its chemical and biological properties.
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19
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Abstract
The effects of Ti, Nb, Ta, Zr, and Ag on cellular and bacterial adhesion were investigated in this study. Moreover, the relationships between surface compositions, metal ion release behaviors, and biological responses were examined. As a result, MC3T3-E1 cells and S. aureus were able to better attach to Ti and Zr rather than the Nb and Ta specimens. For the Ag specimen, the amount of Ag ions released into Hanks’ solution was the largest among all the specimens. Cellular and bacterial adhesion onto the Ag specimen was inhibited compared with the other specimens, because of Ag ion release. Alternatively, Nb and Ta specimens exhibited specific biological responses. Cellular adhesion on Nb and Ta specimens was similar to that on Ti, while bacterial adhesion on Nb and Ta specimens was inhibited compared with that on Ti. This study proved that Nb and Ta inhibited bacterial adhesion and exhibited no harmful effects on cellular adhesion. In addition, these results indicate that the passive layer on Nb and Ta plays a key role in the inhibition of bacterial adhesion.
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20
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Abstract
Implant surface micro and macro topography plays a key role in early osseointegration. The physicochemical features of the implant surface (ie, chemical composition, hydrophobicity/hydrophilicity and roughness) influence the deposition of extracellular matrix proteins, the precipitation of bone mineral, and the stimulation of cells. Modification of the implant topography provides better primary stability and faster osseointegration, allowing for immediate placement or immediate loading. Randomized clinical trials are warranted to compare the response of osseointegration with various implant micro and macro surface topographies in people with various local or systemic risk factors.
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Affiliation(s)
- Khalid Almas
- Division of Periodontology, Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, P O Box. 1982, Dammam 31441, Saudi Arabia.
| | - Steph Smith
- Division of Periodontology, Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, P O Box. 1982, Dammam 31441, Saudi Arabia
| | - Ahmad Kutkut
- Division of Prosthodontics, University of Kentucky, College of Dentistry, D646, 800 Rose Street, Lexington, KY 40536, USA
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21
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Shimabukuro M, Tsutsumi Y, Yamada R, Ashida M, Chen P, Doi H, Nozaki K, Nagai A, Hanawa T. Investigation of Realizing Both Antibacterial Property and Osteogenic Cell Compatibility on Titanium Surface by Simple Electrochemical Treatment. ACS Biomater Sci Eng 2019; 5:5623-5630. [PMID: 33405692 DOI: 10.1021/acsbiomaterials.8b01058] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Recently, the problem of infection on implanted devices caused by the formation of biofilms has been recognized. Surface treatment to prevent the initial stages of bacterial adhesion and subsequent bacterial growth is the only possible solution against such infection. In this study, simple electrochemical treatment was used for introducing silver, an antibiotic agent, on the titanium surface. A porous oxide layer containing small amounts of silver was formed on the metal of the substrate. This was done by microarc oxidation using the electrolyte with silver nitrate. The porous oxide layer was almost amorphous with a small fraction of anatase phase. The samples prepared using the electrolyte containing 0.04 mM or a higher concentration of silver nitrate showed an excellent antibacterial effect against both E. coli and S. aureus. However, the proliferation of osteoblast-like cells in the samples was not affected when a concentration of 0.5 mM or lower was used. Moreover, samples containing silver showed no harmful effects on the process of bone differentiation. Furthermore, the calcification process of the cells on the samples treated with and without silver were more promoted than that on untreated Ti. Thus, we found that it is possible to use this optimum concentration of silver to realize the conflicting biofunctions: its antibacterial property and osteogenic cell compatibility.
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Affiliation(s)
- Masaya Shimabukuro
- Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
| | - Yusuke Tsutsumi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda, Tokyo, Japan.,Graduate School of Engineering, The University of Tokyo, Bunyko, Tokyo, Japan
| | - Risa Yamada
- Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
| | - Maki Ashida
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda, Tokyo, Japan
| | - Peng Chen
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda, Tokyo, Japan
| | - Hisashi Doi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda, Tokyo, Japan
| | - Kosuke Nozaki
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda, Tokyo, Japan
| | - Akiko Nagai
- Department of Anatomy, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Takao Hanawa
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Chiyoda, Tokyo, Japan
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22
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Siddique A, Suraraksa B, Horprathum M, Oaew S, Cheunkar S. Wastewater biofilm formation on self-assembled monolayer surfaces using elastomeric flow cells. Anaerobe 2019; 57:11-18. [PMID: 30872074 DOI: 10.1016/j.anaerobe.2019.03.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 02/25/2019] [Accepted: 03/05/2019] [Indexed: 01/18/2023]
Abstract
In anaerobic wastewater treatment, microbial biofilm is beneficial for efficient substrate utilization and for preventing the wash-out of key microorganisms. By providing solid supports, biofilm formation can be accelerated due to the early initial adhesion of residing microbes. Alteration in surface properties is therefore one such approach that helps us understand microbial interfacial interaction. Here, self-assembled monolayers of alkanethiols with carboxyl (-COOH), hydroxyl (-OH), and amine (-NH2) terminal moieties on gold (Au) substrates were employed to study the initial adhesion of wastewater microbes. An elastomeric flow cell was also utilized to simulate the environment of wastewater bioreactor. Results from fluorescence in situ hybridization (FISH) portrayed more enhanced microbial adhesion after 2 h on -NH2 functional group with the calculated surface coverage of 12.8 ± 2.4% as compared to 7.7 ± 1.6% on -COOH, 11.0 ± 2.0% on -OH, and 1.2% on unmodified Au surfaces. This might be because of concomitant electrostatic attraction between negatively-charged bacteria and positively-charged (-NH3+) functional groups. Nevertheless, the average surface coverage by individual biofilm clusters was 28.0 ± 5.0 μm2 and 32.0 ± 9.0 μm2 on -NH2 and -OH surfaces, respectively, while -COOH surfaces resulted in higher value (60.0 ± 5.0 μm2) and no significant cluster formation was observed on Au surfaces. Accordingly, the average inter-cluster distance observed on -NH2 surfaces was relatively smaller (3.0 ± 0.6 μm) as compared to that on other surfaces. Overall, these data suggest favorable initial biofilm growth on more hydrophilic and positively-charged surfaces. Furthermore, the analysis of the mean fluorescence intensity revealed preferred initial adhesion of key microbes (archaea) on -OH and -NH2 surfaces. Indeed, results obtained from this study would be beneficial in designing selective biointerfaces for certain biofilm carriers in a typical wastewater bioreactor. Importantly, our elastomeric flow cell integrated with SAM-modified surfaces demonstrated an ideal platform for high-throughput investigation of wastewater biofilm under controlled environments.
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Affiliation(s)
- Arslan Siddique
- Biotechnology Division, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bang Khun Thian, Bangkok, 10150, Thailand
| | - Benjaphon Suraraksa
- Excellent Center for Waste Utilization and Management, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, King Mongkut's University of Technology Thonburi, Bang Khun Thian, Bangkok, 10150, Thailand
| | - Mati Horprathum
- Optical Thin-Film Laboratory, National Electronics and Computer Technology Center, National Science and Technology Development Agency, Pathumthani, 12120, Thailand
| | - Sukunya Oaew
- Biochemical Engineering and Pilot Plant Research and Development Laboratory, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, King Mongkut's University of Technology Thonburi, Bang Khun Thian, Bangkok, 10150, Thailand
| | - Sarawut Cheunkar
- Biotechnology Division, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bang Khun Thian, Bangkok, 10150, Thailand.
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23
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Lambert B, Neut D, van der Veen HC, Bulstra SK. Effects of vitamin E incorporation in polyethylene on oxidative degradation, wear rates, immune response, and infections in total joint arthroplasty: a review of the current literature. INTERNATIONAL ORTHOPAEDICS 2018; 43:1549-1557. [PMID: 30470866 DOI: 10.1007/s00264-018-4237-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 11/14/2018] [Indexed: 02/04/2023]
Abstract
Highly cross-linked ultrahigh molecular weight polyethylene (UHMWPE) was introduced to decrease wear debris and osteolysis. During cross-linking, free radicals are formed, making highly cross-linked polyethylene vulnerable to oxidative degradation. In order to reduce this process, anti-oxidant vitamin E can be incorporated in polyethylene. This review provides an overview of the effects of vitamin E incorporation on major complications in total joint arthroplasty: material failure due to oxidative degradation, wear debris and subsequent periprosthetic osteolysis, and prosthetic joint infections. Secondly, this review summarizes the first clinical results of total hip and knee arthroplasties with vitamin E incorporated highly cross-linked polyethylene. Based on in vitro studies, incorporation of vitamin E in polyethylene provides good oxidative protection and preserves low wear rates. Incorporation of vitamin E may have the beneficial effect of reduced inflammatory response to its wear particles. Some microorganisms showed reduced adherence to vitamin E-incorporated UHMWPE; however, clinical relevance is doubtful. Short-term clinical studies of total hip and knee arthroplasties with vitamin E-incorporated highly cross-linked UHMWPE reported good clinical results and wear rates similar to highly cross-linked UHMWPE without vitamin E.
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Affiliation(s)
- Bart Lambert
- Department of Orthopedic Surgery, University of Groningen, University Medical Center Groningen, P.O. Box 30.001, 9700 RB, Groningen, The Netherlands
| | - Daniëlle Neut
- Department of Biomedical Engineering, University of Groningen, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands
| | - Hugo C van der Veen
- Department of Orthopedic Surgery, University of Groningen, University Medical Center Groningen, P.O. Box 30.001, 9700 RB, Groningen, The Netherlands.
| | - Sjoerd K Bulstra
- Department of Orthopedic Surgery, University of Groningen, University Medical Center Groningen, P.O. Box 30.001, 9700 RB, Groningen, The Netherlands
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24
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Vadillo-Rodríguez V, Guerra-García-Mora AI, Perera-Costa D, Gónzalez-Martín ML, Fernández-Calderón MC. Bacterial response to spatially organized microtopographic surface patterns with nanometer scale roughness. Colloids Surf B Biointerfaces 2018; 169:340-347. [DOI: 10.1016/j.colsurfb.2018.05.038] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 04/20/2018] [Accepted: 05/16/2018] [Indexed: 11/16/2022]
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25
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Hayder J, Chaouch MA, Amira N, Ben Mansour M, Majdoub H, Chaubet F, Maaroufi RM. Co-immobilization of chitosan and dermatan sulfate from Raja montagui skin on polyethylene terephthalate surfaces: Characterization and antibiofilm activity. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2017.1320664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jihane Hayder
- University of Monastir, Laboratory of Genetics, Biodiversity and Bioresources Valorization (LR11ES41), High Institute of Biotechnology of Monastir, Monastir, Tunisia
| | - Mohamed Aymen Chaouch
- University of Monastir, Laboratory of interfaces and advanced materials (LIMA), Faculty of Sciences of Monastir, Monastir, Tunisia
| | - Noumi Amira
- University of Monastir, Laboratory of Contagious Diseases and Biologically Active Substances (LR99ES27), Faculty of Pharmacy, Monastir, Tunisia
| | - Mohamed Ben Mansour
- Galilee Institute, University of Paris 13, Paris-Sorbonne University, Laboratory for Vascular Translational Science, Villetaneuse, France
| | - Hatem Majdoub
- University of Monastir, Laboratory of interfaces and advanced materials (LIMA), Faculty of Sciences of Monastir, Monastir, Tunisia
| | - Frédéric Chaubet
- Galilee Institute, University of Paris 13, Paris-Sorbonne University, Laboratory for Vascular Translational Science, Villetaneuse, France
| | - Raoui Mounir Maaroufi
- University of Monastir, Laboratory of Genetics, Biodiversity and Bioresources Valorization (LR11ES41), High Institute of Biotechnology of Monastir, Monastir, Tunisia
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26
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Boschetto F, Toyama N, Horiguchi S, Bock RM, McEntire BJ, Adachi T, Marin E, Zhu W, Mazda O, Bal BS, Pezzotti G. In vitroantibacterial activity of oxide and non-oxide bioceramics for arthroplastic devices: II. Fourier transform infrared spectroscopy. Analyst 2018; 143:2128-2140. [DOI: 10.1039/c8an00234g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The metabolic response of Gram-positiveStaphylococcus epidermidisbacteria to bioceramic substrates was probed by Fourier transform infrared spectroscopy.
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Affiliation(s)
- Francesco Boschetto
- Ceramic Physics Laboratory
- Kyoto Institute of Technology
- Kyoto
- Japan
- Department of Immunology
| | - Nami Toyama
- Ceramic Physics Laboratory
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Satoshi Horiguchi
- Department of Dental Medicine
- Graduate School of Medical Science
- Kyoto Prefectural University of Medicine
- Kyoto 602-8566
- Japan
| | | | | | - Tetsuya Adachi
- Department of Dental Medicine
- Graduate School of Medical Science
- Kyoto Prefectural University of Medicine
- Kyoto 602-8566
- Japan
| | - Elia Marin
- Ceramic Physics Laboratory
- Kyoto Institute of Technology
- Kyoto
- Japan
- Department of Dental Medicine
| | - Wenliang Zhu
- Ceramic Physics Laboratory
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Osam Mazda
- Department of Immunology
- Kyoto Prefectural University of Medicine
- Kyoto 602-8566
- Japan
| | - B. Sonny Bal
- Amedica Corporation
- Salt Lake City
- USA
- Department of Orthopaedic Surgery
- University of Missouri
| | - Giuseppe Pezzotti
- Ceramic Physics Laboratory
- Kyoto Institute of Technology
- Kyoto
- Japan
- Department of Immunology
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27
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Ettelt V, Ekat K, Kämmerer PW, Kreikemeyer B, Epple M, Veith M. Streptavidin-coated surfaces suppress bacterial colonization by inhibiting non-specific protein adsorption. J Biomed Mater Res A 2017; 106:758-768. [DOI: 10.1002/jbm.a.36276] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 10/10/2017] [Accepted: 10/16/2017] [Indexed: 01/14/2023]
Affiliation(s)
- Volker Ettelt
- Laboratory of Biophysics, Faculty of Applied Natural Sciences; Westphalian University of Applied Sciences; Recklinghausen D-45665 Germany
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), Faculty of Chemistry; University of Duisburg-Essen; Essen D-45141 Germany
| | - Katharina Ekat
- Department Cell Biology; University Medical Center Rostock; Rostock D-18057 Germany
- Department of Operative Dentistry and Periodontology; University Medical Center Rostock; Rostock D-18057 Germany
| | - Peer W. Kämmerer
- Department of Oral, Maxillofacial and Plastic Surgery; University Medical Center Rostock; Rostock D-18057 Germany
| | - Bernd Kreikemeyer
- Institute of Medical Microbiology, University Medical Center Rostock; Rostock D-18057 Germany
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), Faculty of Chemistry; University of Duisburg-Essen; Essen D-45141 Germany
| | - Michael Veith
- Laboratory of Biophysics, Faculty of Applied Natural Sciences; Westphalian University of Applied Sciences; Recklinghausen D-45665 Germany
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28
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Cyphert EL, Zuckerman ST, Korley JN, von Recum HA. Affinity interactions drive post-implantation drug filling, even in the presence of bacterial biofilm. Acta Biomater 2017; 57:95-102. [PMID: 28414173 DOI: 10.1016/j.actbio.2017.04.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 03/30/2017] [Accepted: 04/12/2017] [Indexed: 11/17/2022]
Abstract
Current post-operative standard of care for surgical procedures, including device implantations, dictates prophylactic antimicrobial therapy, but a percentage of patients still develop infections. Systemic antimicrobial therapy needed to treat such infections can lead to downstream tissue toxicities and generate drug-resistant bacteria. To overcome issues associated with systemic drug administration, a polymer incorporating specific drug affinity has been developed with the potential to be filled or refilled with antimicrobials, post-implantation, even in the presence of bacterial biofilm. This polymer can be used as an implant coating or stand-alone drug delivery device, and can be translated to a variety of applications, such as implanted or indwelling medical devices, and/or surgical site infections. The filling of empty affinity-based drug delivery polymer was analyzed in an in vitro filling/refilling model mimicking post-implantation tissue conditions. Filling in the absence of bacteria was compared to filling in the presence of bacterial biofilms of varying maturity to demonstrate proof-of-concept necessary prior to in vivo experiments. Antibiotic filling into biofilm-coated affinity polymers was comparable to drug filling seen in same affinity polymers without biofilm demonstrating that affinity polymers retain ability to fill with antibiotic even in the presence of biofilm. Additionally, post-implantation filled antibiotics showed sustained bactericidal activity in a zone of inhibition assay demonstrating post-implantation capacity to deliver filled antibiotics in a timeframe necessary to eradicate bacteria in biofilms. This work shows affinity polymers can fill high levels of antibiotics post-implantation independent of biofilm presence potentially enabling device rescue, rather than removal, in case of infection. STATEMENT OF SIGNIFICANCE Post-operative prophylactic antimicrobial therapy greatly reduces risk of infection, such as on biomedical implants, but does not totally eliminate infections, and the healthcare cost of these remaining infections remains a major concern. Systemic antimicrobial therapy to treat these infections can lead to tissue toxicity and drug-resistant bacteria. In order to treat only those patients who have developed infections, a customizable antimicrobial delivery system made of cyclodextrin-based affinity polymer has been developed that is capable of filling post-implantation and delivering the filled antibiotic in a sustained manner even when the delivery device covered in bacterial biofilm. These observations have the potential to be translated to a wide variety of applications, such as implanted or indwelling medical devices, and/or surgical site infections.
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Affiliation(s)
- Erika L Cyphert
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44118, United States
| | - Sean T Zuckerman
- Affinity Therapeutics, 11000 Cedar Avenue Suite 285, Cleveland, OH 44106, United States
| | - Julius N Korley
- Affinity Therapeutics, 11000 Cedar Avenue Suite 285, Cleveland, OH 44106, United States
| | - Horst A von Recum
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44118, United States.
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Gu H, Kolewe KW, Ren D. Conjugation in Escherichia coli Biofilms on Poly(dimethylsiloxane) Surfaces with Microtopographic Patterns. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3142-3150. [PMID: 28253620 DOI: 10.1021/acs.langmuir.6b04679] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Bacterial biofilms are highly tolerant to antimicrobials and play an important role in the development and spread of antibiotic resistance based on horizontal gene transfer due to close cell-to-cell contact. As an important surface property, topography has been shown to affect bacterial adhesion and biofilm formation. Here, we demonstrate that micrometer-scale surface topographies also affect horizontal gene transfer through conjugation in bacterial biofilms. Specifically, biofilm formation and associated conjugation on poly(dimethylsiloxane) (PDMS) surfaces with 10 μm tall protruding patterns were studied using fluorescently labeled donor and recipient strains of Escherichia coli. The results demonstrate that square-shaped topographic patterns with side length of 20, 50, and 100 μm and interpattern distance equal to or larger than 10 μm promote biofilm formation and conjugation compared to the smooth control. The vertical sides of these topographic features were found to be the "hot spots" for bacterial conjugation compared to the top of patterns and grooves between topographic features. The increase in conjugation frequency on the sides of topographic patterns was attributed to the high cell density of recipient cells at these locations. A motility (motB) mutant of the recipient strain exhibited defects in biofilm formation at the "hot spots" and conjugation, which were recovered by complementing the motB gene on a plasmid. These results also provided guidance for designing surface topographies that can reduce conjugation. Specifically, 10 μm tall hexagon-shaped topographic patterns with side length of 15 μm and interpattern distance of 2 μm were prepared to reduce biofilm formation on the side of protruding patterns and interrupt cell-cell interaction in the grooves. This topography exhibited 85% and 46% reduction of biofilm formation and associated conjugation, respectively, compared to the smooth control.
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Affiliation(s)
- Huan Gu
- Department of Biomedical and Chemical Engineering, ‡Syracuse Biomaterials Institute, §Department of Civil and Environmental Engineering, and ∥Department of Biology, Syracuse University , Syracuse, New York 13244, United States
| | - Kristopher W Kolewe
- Department of Biomedical and Chemical Engineering, ‡Syracuse Biomaterials Institute, §Department of Civil and Environmental Engineering, and ∥Department of Biology, Syracuse University , Syracuse, New York 13244, United States
| | - Dacheng Ren
- Department of Biomedical and Chemical Engineering, ‡Syracuse Biomaterials Institute, §Department of Civil and Environmental Engineering, and ∥Department of Biology, Syracuse University , Syracuse, New York 13244, United States
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Neoh KG, Li M, Kang ET, Chiong E, Tambyah PA. Surface modification strategies for combating catheter-related complications: recent advances and challenges. J Mater Chem B 2017; 5:2045-2067. [DOI: 10.1039/c6tb03280j] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review summarizes the progress made in addressing bacterial colonization and other surface-related complications arising from catheter use.
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Affiliation(s)
- Koon Gee Neoh
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 119077
| | - Min Li
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 119077
| | - En-Tang Kang
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 119077
| | - Edmund Chiong
- Department of Surgery
- National University of Singapore
- Singapore 119077
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Zhang Y, He W, Li J, Wang K, Li J, Tan H, Fu Q. Gemini quaternary ammonium salt waterborne biodegradable polyurethanes with antibacterial and biocompatible properties. MATERIALS CHEMISTRY FRONTIERS 2017. [DOI: 10.1039/c6qm00039h] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Novel antibacterial waterborne polyurethanes based on gemini quaternary ammonium salt with good biodegradable and biocompatible properties.
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Affiliation(s)
- Yi Zhang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Wei He
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jiehua Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Kunjie Wang
- Department of Urology
- West China Hospital
- Huaxi Clinical College
- Sichuan University
- Chengdu 610065
| | - Jianshu Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hong Tan
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Qiang Fu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
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32
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Acoustic vibration can enhance bacterial biofilm formation. J Biosci Bioeng 2016; 122:765-770. [DOI: 10.1016/j.jbiosc.2016.05.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 05/10/2016] [Accepted: 05/30/2016] [Indexed: 11/23/2022]
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Van Kerckhoven M, Hotterbeekx A, Lanckacker E, Moons P, Lammens C, Kerstens M, Ieven M, Delputte P, Jorens PG, Malhotra-Kumar S, Goossens H, Maes L, Cos P. Characterizing the in vitro biofilm phenotype of Staphylococcus epidermidis isolates from central venous catheters. J Microbiol Methods 2016; 127:95-101. [PMID: 27196636 DOI: 10.1016/j.mimet.2016.05.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 05/14/2016] [Accepted: 05/14/2016] [Indexed: 01/03/2023]
Abstract
Central venous catheter (CVC)-related infections are commonly caused by Staphylococcus epidermidis that is able to form a biofilm on the catheter surface. Many studies involving biofilm formation by Staphylococcus have been published each adopting an own in vitro model. Since the capacity to form a biofilm depends on multiple environmental factors, direct comparison of results obtained in different studies remains challenging. This study characterized the phenotype (strong versus weak biofilm-producers) of S. epidermidis from CVCs in four different in vitro biofilm models, covering differences in material type (glass versus polymer) and nutrient presentation (static versus continuous flow). A good correlation in phenotype was obtained between glass and polymeric surfaces independent of nutrient flow, with 85% correspondence under static growth conditions and 80% under dynamic conditions. A 80% correspondence between static and dynamic conditions on polymeric surfaces could be demonstrated as well. Incubation time had a significant influence on the biofilm phenotype with only 55% correspondence between the dynamic models at different incubation times (48h versus 17h). Screening for the presence of biofilm-related genes only revealed that ica A was correlated with biofilm formation under static but not under dynamic conditions. In conclusion, this study highlights that a high level of standardization is necessary to interpret and compare results of different in vitro biofilm models.
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Affiliation(s)
- Marian Van Kerckhoven
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - An Hotterbeekx
- Laboratory of Medical Microbiology (LMM), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Ellen Lanckacker
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Pieter Moons
- Laboratory of Medical Microbiology (LMM), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Christine Lammens
- Laboratory of Medical Microbiology (LMM), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Monique Kerstens
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Margareta Ieven
- Laboratory of Medical Microbiology (LMM), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Peter Delputte
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Philippe G Jorens
- Intensive Care Unit, Antwerp University Hospital, University of Antwerp, Wilrijkstraat 10, 2650 Edegem, Belgium
| | - Surbhi Malhotra-Kumar
- Laboratory of Medical Microbiology (LMM), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Herman Goossens
- Laboratory of Medical Microbiology (LMM), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium.
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34
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Electrochemical Surface Treatment of a β-titanium Alloy to Realize an Antibacterial Property and Bioactivity. METALS 2016. [DOI: 10.3390/met6040076] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sin MC, Sun YM, Yao CL, Chou CJ, Tseng HW, Zheng J, Chang Y. PEGylated Poly(3-hydroxybutyrate) Scaffold for Hydration-Driven Cell Infiltration, Neo-Tissue Ingrowth, and Osteogenic Potential. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2015.1030657] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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36
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Banche G, Bracco P, Allizond V, Bistolfi A, Boffano M, Cimino A, Brach del Prever EM, Cuffini AM. Do crosslinking and vitamin E stabilization influence microbial adhesions on UHMWPE-based biomaterials? Clin Orthop Relat Res 2015; 473:974-86. [PMID: 25367109 PMCID: PMC4317464 DOI: 10.1007/s11999-014-4024-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Microorganism adhesion on polyethylene for total joint arthroplasty is a concern. Many studies have focused on vitamin E-stabilized ultrahigh-molecular-weight polyethylene (UHMWPE), whereas first-generation, highly crosslinked UHMWPE, which is the most commonly used in clinical practice, has been scarcely evaluated. QUESTIONS/PURPOSES We aimed (1) to compare the adherence of Staphylococcus epidermidis, Staphylococcus aureus, Escherichia coli, and Candida albicans with virgin (untreated) UHMWPE (PE) and crosslinked UHMWPE (XLPE); (2) to correlate the results with the biomaterial surface properties; and (3) to determine whether the decreased adhesion on vitamin E-stabilized UHMWPE (VE-PE) previously recorded for bacteria can also be confirmed for C albicans. METHODS Microbial adhesion of biofilm-producing American Type Culture Collection (ATCC) and clinical strains on XLPE and VE-PE were compared with PE at 3, 7, 24, and 48 hours of incubation and quantified, as colony forming units (CFU)/mL, using a sonication protocol. Sample surfaces were characterized by scanning electron microscopy, roughness and contact angle measurements, attenuated total reflection-Fourier transform infrared spectroscopy, and x-ray photoelectron spectroscopy (XPS) to reveal qualitative differences in surface composition and topography that could influence the microbial adhesion. The results were analyzed by descriptive statistics and tested by unpaired t-tests. RESULTS All microorganisms, both ATCC and clinical strains, showed lower adhesion (p < 0.05) on XLPE with adhesion percentages ranging from 18% to 25%, compared with PE with adhesion percentages ranging from 51% to 55%, after 48 hours. Only the ATCC S epidermidis showed a reduced adhesion profile even at 3 hours (adhesion ratio of 14% on XLPE versus 50% on PE) and 24 hours (19% on XLPE versus 55% on PE) of incubation. ATCC and clinical C albicans were less adherent to XLPE than to PE (p < 0.05) showing even at the earlier incubation time points adhesion values always of 10(3) CFU/mL and 10(4) CFU/mL, respectively. Roughness and contact angle were 0.8 ± 0.2 μm and 92° ± 3°, respectively, with no differences among samples. Qualitative differences in the surface chemical composition were revealed by XPS only. A confirmation of the decreased adhesion on VE-PE respect to PE was also registered here for C albicans strains (p < 0.05). CONCLUSIONS Vitamin E stabilization and crosslinking of UHMWPE are capable of reducing microbial adhesion. Further studies are needed to fully elucidate the mechanisms of modulation of microbial adhesion to medical-grade UHMWPE. CLINICAL RELEVANCE Our results suggest that VE-PE and XLPE may have an added benefit of being more resistant to bacterial adhesion, even fungal strains.
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Affiliation(s)
- Giuliana Banche
- />Department of Public Health and Pediatrics, University of Torino, Turin, Italy
| | - Pierangiola Bracco
- />Department of Chemistry and NIS (Nanostructured Interfaces and Surfaces) Inter-departmental Centre, University of Torino, Turin, Italy
| | - Valeria Allizond
- />Department of Public Health and Pediatrics, University of Torino, Turin, Italy
| | - Alessandro Bistolfi
- />Department of Orthopedics, AO Città della Scienza e della Salute, Via Zuretti 29, 10126 Turin, Italy
| | - Michele Boffano
- />Department of Orthopedics, AO Città della Scienza e della Salute, Via Zuretti 29, 10126 Turin, Italy
| | - Andrea Cimino
- />Department of Orthopedics, AO Città della Scienza e della Salute, Via Zuretti 29, 10126 Turin, Italy
| | | | - Anna Maria Cuffini
- />Department of Public Health and Pediatrics, University of Torino, Turin, Italy
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McCloskey AP, Gilmore BF, Laverty G. Evolution of antimicrobial peptides to self-assembled peptides for biomaterial applications. Pathogens 2014; 3:791-821. [PMID: 25436505 PMCID: PMC4282886 DOI: 10.3390/pathogens3040791] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 09/17/2014] [Accepted: 09/25/2014] [Indexed: 11/17/2022] Open
Abstract
Biomaterial-related infections are a persistent burden on patient health, recovery, mortality and healthcare budgets. Self-assembled antimicrobial peptides have evolved from the area of antimicrobial peptides. Peptides serve as important weapons in nature, and increasingly medicine, for combating microbial infection and biofilms. Self-assembled peptides harness a "bottom-up" approach, whereby the primary peptide sequence may be modified with natural and unnatural amino acids to produce an inherently antimicrobial hydrogel. Gelation may be tailored to occur in the presence of physiological and infective indicators (e.g. pH, enzymes) and therefore allow local, targeted antimicrobial therapy at the site of infection. Peptides demonstrate inherent biocompatibility, antimicrobial activity, biodegradability and numerous functional groups. They are therefore prime candidates for the production of polymeric molecules that have the potential to be conjugated to biomaterials with precision. Non-native chemistries and functional groups are easily incorporated into the peptide backbone allowing peptide hydrogels to be tailored to specific functional requirements. This article reviews an area of increasing interest, namely self-assembled peptides and their potential therapeutic applications as innovative hydrogels and biomaterials in the prevention of biofilm-related infection.
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Affiliation(s)
- Alice P McCloskey
- Biomaterials, Biofilm and Infection Control Research Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, N. Ireland.
| | - Brendan F Gilmore
- Biomaterials, Biofilm and Infection Control Research Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, N. Ireland.
| | - Garry Laverty
- Biomaterials, Biofilm and Infection Control Research Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, N. Ireland.
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38
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Totani M, Ando T, Terada K, Terashima T, Kim IY, Ohtsuki C, Xi C, Kuroda K, Tanihara M. Utilization of star-shaped polymer architecture in the creation of high-density polymer brush coatings for the prevention of platelet and bacteria adhesion. Biomater Sci 2014; 2:1172-1185. [PMID: 25485105 PMCID: PMC4251873 DOI: 10.1039/c4bm00034j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate utilization of star-shaped polymers as high-density polymer brush coatings and their effectiveness to inhibit the adhesion of platelets and bacteria. Star polymers consisting of poly(2-hydroxyethyl methacrylate) (PHEMA) and/or poly(methyl methacrylate) (PMMA), were synthesized using living radical polymerization with a ruthenium catalyst. The polymer coatings were prepared by simple drop casting of the polymer solution onto poly(ethylene terephthalate) (PET) surfaces and then dried. Among the star polymers prepared in this study, the PHEMA star polymer (star-PHEMA) and the PHEMA/PMMA (mol. ratio of 71/29) heteroarm star polymer (star-H71M29) coatings showed the highest percentage of inhibition against platelet adhesion (78-88% relative to noncoated PET surface) and Escherichia coli (94-97%). These coatings also showed anti-adhesion activity against platelets after incubation in Dulbecco's phosphate buffered saline or surfactant solution for 7 days. In addition, the PMMA component of the star polymers increased the scratch resistance of the coating. These results indicate that the star-polymer architecture provides high polymer chain density on PET surfaces to prevent adhesion of platelets and bacteria, as well as coating stability and physical durability to prevent exposure of bare PET surfaces. The star polymers provide a simple and effective approach to preparing anti-adhesion polymer coatings on biomedical materials against the adhesion of platelets and bacteria.
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Affiliation(s)
- Masayasu Totani
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Tsuyoshi Ando
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Kayo Terada
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Takaya Terashima
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Ill Yong Kim
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Naogya 464-8603, Japan
| | - Chikara Ohtsuki
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Naogya 464-8603, Japan
| | - Chuanwu Xi
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Masao Tanihara
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
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Gomes LC, Silva LN, Simões M, Melo LF, Mergulhão FJ. Escherichia coli adhesion, biofilm development and antibiotic susceptibility on biomedical materials. J Biomed Mater Res A 2014; 103:1414-23. [PMID: 25044887 DOI: 10.1002/jbm.a.35277] [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: 04/21/2014] [Revised: 06/22/2014] [Accepted: 07/09/2014] [Indexed: 11/11/2022]
Abstract
The aim of this work was to test materials typically used in the construction of medical devices regarding their influence in the initial adhesion, biofilm development and antibiotic susceptibility of Escherichia coli biofilms. Adhesion and biofilm development was monitored in 12-well microtiter plates containing coupons of different biomedical materials--silicone (SIL), stainless steel (SS) and polyvinyl chloride (PVC)--and glass (GLA) as control. The susceptibility of biofilms to ciprofloxacin and ampicillin was assessed, and the antibiotic effect in cell morphology was observed by scanning electron microscopy. The surface hydrophobicity of the bacterial strain and materials was also evaluated from contact angle measurements. Surface hydrophobicity was related with initial E. coli adhesion and subsequent biofilm development. Hydrophobic materials, such as SIL, SS, and PVC, showed higher bacterial colonization than the hydrophilic GLA. Silicone was the surface with the greatest number of adhered cells and the biofilms formed on this material were also less susceptible to both antibiotics. It was found that different antibiotics induced different levels of elongation on E. coli sessile cells. Results revealed that, by affecting the initial adhesion, the surface properties of a given material can modulate biofilm buildup and interfere with the outcome of antimicrobial therapy. These findings raise the possibility of fine-tuning surface properties as a strategy to reach higher therapeutic efficacy.
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Affiliation(s)
- L C Gomes
- LEPABE - Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, Porto, Portugal
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Su LC, Xie Z, Zhang Y, Nguyen KT, Yang J. Study on the Antimicrobial Properties of Citrate-Based Biodegradable Polymers. Front Bioeng Biotechnol 2014; 2:23. [PMID: 25023605 PMCID: PMC4090902 DOI: 10.3389/fbioe.2014.00023] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 06/17/2014] [Indexed: 02/05/2023] Open
Abstract
Citrate-based polymers possess unique advantages for various biomedical applications since citric acid is a natural metabolism product, which is biocompatible and antimicrobial. In polymer synthesis, citric acid also provides multiple functional groups to control the crosslinking of polymers and active binding sites for further conjugation of biomolecules. Our group recently developed a number of citrate-based polymers for various biomedical applications by taking advantage of their controllable chemical, mechanical, and biological characteristics. In this study, various citric acid derived biodegradable polymers were synthesized and investigated for their physicochemical and antimicrobial properties. Results indicate that citric acid derived polymers reduced bacterial proliferation to different degrees based on their chemical composition. Among the studied polymers, poly(octamethylene citrate) showed ~70-80% suppression to microbe proliferation, owing to its relatively higher ratio of citric acid contents. Crosslinked urethane-doped polyester elastomers and biodegradable photoluminescent polymers also exhibited significant bacteria reduction of ~20 and ~50% for Staphylococcus aureus and Escherichia coli, respectively. Thus, the intrinsic antibacterial properties in citrate-based polymers enable them to inhibit bacteria growth without incorporation of antibiotics, silver nanoparticles, and other traditional bacteria-killing agents suggesting that the citrate-based polymers are unique beneficial materials for wound dressing, tissue engineering, and other potential medical applications where antimicrobial property is desired.
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Affiliation(s)
- Lee-Chun Su
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, USA
| | - Zhiwei Xie
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Yi Zhang
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, USA
| | - Kytai Truong Nguyen
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, USA
| | - Jian Yang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA, USA
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Gittens RA, Scheideler L, Rupp F, Hyzy SL, Geis-Gerstorfer J, Schwartz Z, Boyan BD. A review on the wettability of dental implant surfaces II: Biological and clinical aspects. Acta Biomater 2014; 10:2907-18. [PMID: 24709541 DOI: 10.1016/j.actbio.2014.03.032] [Citation(s) in RCA: 387] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 03/26/2014] [Accepted: 03/30/2014] [Indexed: 01/10/2023]
Abstract
Dental and orthopedic implants have been under continuous advancement to improve their interactions with bone and ensure a successful outcome for patients. Surface characteristics such as surface topography and surface chemistry can serve as design tools to enhance the biological response around the implant, with in vitro, in vivo and clinical studies confirming their effects. However, the comprehensive design of implants to promote early and long-term osseointegration requires a better understanding of the role of surface wettability and the mechanisms by which it affects the surrounding biological environment. This review provides a general overview of the available information about the contact angle values of experimental and of marketed implant surfaces, some of the techniques used to modify surface wettability of implants, and results from in vitro and clinical studies. We aim to expand the current understanding on the role of wettability of metallic implants at their interface with blood and the biological milieu, as well as with bacteria, and hard and soft tissues.
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Rochford ETJ, Subbiahdoss G, Moriarty TF, Poulsson AHC, van der Mei HC, Busscher HJ, Richards RG. Anin vitroinvestigation of bacteria-osteoblast competition on oxygen plasma-modified PEEK. J Biomed Mater Res A 2014; 102:4427-34. [DOI: 10.1002/jbm.a.35130] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 02/05/2014] [Accepted: 02/11/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Edward T. J. Rochford
- AO Research Institute Davos, 7270 Davos; Switzerland
- Institute of Biological, Environmental and Rural sciences, Aberystwyth University; Wales, United Kingdom
| | - Guruprakash Subbiahdoss
- Department of BioMedical Engineering; University of Groningen and University Medical Center Groningen; Groningen The Netherlands
| | | | | | - Henny C. van der Mei
- Department of BioMedical Engineering; University of Groningen and University Medical Center Groningen; Groningen The Netherlands
| | - Henk J. Busscher
- Department of BioMedical Engineering; University of Groningen and University Medical Center Groningen; Groningen The Netherlands
| | - R. Geoff Richards
- AO Research Institute Davos, 7270 Davos; Switzerland
- Institute of Biological, Environmental and Rural sciences, Aberystwyth University; Wales, United Kingdom
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43
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Materials and surface engineering to control bacterial adhesion and biofilm formation: A review of recent advances. Front Chem Sci Eng 2014. [DOI: 10.1007/s11705-014-1412-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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44
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Rochford E, Poulsson A, Salavarrieta Varela J, Lezuo P, Richards R, Moriarty T. Bacterial adhesion to orthopaedic implant materials and a novel oxygen plasma modified PEEK surface. Colloids Surf B Biointerfaces 2014; 113:213-22. [DOI: 10.1016/j.colsurfb.2013.09.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 08/23/2013] [Accepted: 09/05/2013] [Indexed: 10/26/2022]
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45
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Gu H, Hou S, Yongyat C, De Tore S, Ren D. Patterned biofilm formation reveals a mechanism for structural heterogeneity in bacterial biofilms. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:11145-11153. [PMID: 23919925 DOI: 10.1021/la402608z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Bacterial biofilms are ubiquitous and are the major cause of chronic infections in humans and persistent biofouling in industry. Despite the significance of bacterial biofilms, the mechanism of biofilm formation and associated drug tolerance is still not fully understood. A major challenge in biofilm research is the intrinsic heterogeneity in the biofilm structure, which leads to temporal and spatial variation in cell density and gene expression. To understand and control such structural heterogeneity, surfaces with patterned functional alkanthiols were used in this study to obtain Escherichia coli cell clusters with systematically varied cluster size and distance between clusters. The results from quantitative imaging analysis revealed an interesting phenomenon in which multicellular connections can be formed between cell clusters depending on the size of interacting clusters and the distance between them. In addition, significant differences in patterned biofilm formation were observed between wild-type E. coli RP437 and some of its isogenic mutants, indicating that certain cellular and genetic factors are involved in interactions among cell clusters. In particular, autoinducer-2-mediated quorum sensing was found to be important. Collectively, these results provide missing information that links cell-to-cell signaling and interaction among cell clusters to the structural organization of bacterial biofilms.
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Affiliation(s)
- Huan Gu
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York 13244, USA
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Rizzello L, Cingolani R, Pompa PP. Nanotechnology tools for antibacterial materials. Nanomedicine (Lond) 2013; 8:807-21. [DOI: 10.2217/nnm.13.63] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The understanding of the interactions between biological systems and nanoengineered devices is crucial in several research fields, including tissue engineering, biomechanics, synthetic biology and biomedical devices. This review discusses the current knowledge of the interactions between bacteria and abiotic nanostructured substrates. First, the effects of randomly organized nanoscale topography on bacterial adhesion and persistence are described. Second, the interactions between microorganisms and highly organized/ordered micro- and nano-patterns are discussed. Finally, we survey the most promising approaches for the fabrication of silver polymeric nanocomposites, which have important applications as antimicrobial materials. The advantages, drawbacks and limitations of such nanotechnologies are critically discussed in view of potential future applications.
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Affiliation(s)
- Loris Rizzello
- Center for Bio-Molecular Nanotechnology, Istituto Italiano di Tecnologia, Via Barsanti, 1-73010 Arnesano (Lecce), Italy
| | - Roberto Cingolani
- Istituto Italiano di Tecnologia, Central Research Laboratories, Via Morego, 30-16136 Genova, Italy
| | - Pier Paolo Pompa
- Center for Bio-Molecular Nanotechnology, Istituto Italiano di Tecnologia, Via Barsanti, 1-73010 Arnesano (Lecce), Italy.
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Antibiotic-loaded acrylic bone cements: an in vitro study on the release mechanism and its efficacy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3025-32. [PMID: 23623128 DOI: 10.1016/j.msec.2013.03.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 01/22/2013] [Accepted: 03/18/2013] [Indexed: 11/22/2022]
Abstract
An in vitro study was carried out in order to investigate the antibiotic release mechanism and the antibacterial properties of commercially (Palacos® R+G and Palacos® LV+G) and manually (Palacos® R+GM and Palacos® LV+GM) blended gentamicin-loaded bone cements. Samples were characterized by means of scanning electron microscopy (SEM) and compression strength was evaluated. The antibiotic release was investigated by dipping sample in simulated body fluid (SBF) and periodically analyzing the solution by means of high pressure liquid chromatography (HPLC). Different antibacterial tests were performed to investigate the possible influence of blending technique on antibacterial properties. Only some differences were observed between gentamicin manually added and commercial ones, in the release curves, while the antibacterial effect and the mechanical properties seem to not feel the blending technique.
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Reducing Staphylococcus aureus biofilm formation on stainless steel 316L using functionalized self-assembled monolayers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2059-69. [PMID: 23498233 DOI: 10.1016/j.msec.2013.01.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 12/21/2012] [Accepted: 01/13/2013] [Indexed: 11/20/2022]
Abstract
Stainless steel 316L (SS316L) is a common material used in orthopedic implants. Bacterial colonization of the surface and subsequent biofilm development can lead to refractory infection of the implant. Since the greatest risk of infection occurs perioperatively, strategies that reduce bacterial adhesion during this time are important. As a strategy to limit bacterial adhesion and biofilm formation on SS316L, self-assembled monolayers (SAMs) were used to modify the SS316L surface. SAMs with long alkyl chains terminated with hydrophobic (-CH3) or hydrophilic (oligoethylene glycol) tail groups were used to form coatings and in an orthogonal approach, SAMs were used to immobilize gentamicin or vancomycin on SS316L for the first time to form an "active" antimicrobial coating to inhibit early biofilm development. Modified SS316L surfaces were characterized using surface infrared spectroscopy, contact angles, MALDI-TOF mass spectrometry and atomic force microscopy. The ability of SAM-modified SS316L to retard biofilm development by Staphylococcus aureus was functionally tested using confocal scanning laser microscopy with COMSTAT image analysis, scanning electron microscopy and colony forming unit analysis. Neither hydrophobic nor hydrophilic SAMs reduced biofilm development. However, gentamicin-linked and vancomycin-linked SAMs significantly reduced S. aureus biofilm formation for up to 24 and 48 h, respectively.
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Myllymaa K, Levon J, Tiainen VM, Myllymaa S, Soininen A, Korhonen H, Kaivosoja E, Lappalainen R, Konttinen YT. Formation and retention of staphylococcal biofilms on DLC and its hybrids compared to metals used as biomaterials. Colloids Surf B Biointerfaces 2013; 101:290-7. [DOI: 10.1016/j.colsurfb.2012.07.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Revised: 06/20/2012] [Accepted: 07/09/2012] [Indexed: 12/01/2022]
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Webster TJ, Patel AA, Rahaman MN, Sonny Bal B. Anti-infective and osteointegration properties of silicon nitride, poly(ether ether ketone), and titanium implants. Acta Biomater 2012; 8:4447-54. [PMID: 22863905 DOI: 10.1016/j.actbio.2012.07.038] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 07/19/2012] [Accepted: 07/25/2012] [Indexed: 11/17/2022]
Abstract
Silicon nitride (Si(3)N(4)) is an industrial ceramic used in spinal fusion and maxillofacial reconstruction. Maximizing bone formation and minimizing bacterial infection are desirable attributes in orthopedic implants designed to adhere to living bone. This study has compared these attributes of Si(3)N(4) implants with implants made from two other orthopedic biomaterials, i.e. poly(ether ether ketone) (PEEK) and titanium (Ti). Dense implants made of Si(3)N(4), PEEK, or Ti were surgically implanted into matching rat calvarial defects. Bacterial infection was induced with an injection of 1×10(4)Staphylococcus epidermidis. Control animals received saline only. On 3, 7, and 14days, and 3months post-surgery four rats per time period and material were killed, and calvariae were examined to quantify new bone formation and the presence or absence of bacteria. Quantitative evaluation of osteointegration to adjacent bone was done by measuring the resistance to implant push-out (n=8 rats each for Ti and PEEK, and n=16 rats for Si(3)N(4)). Three months after surgery in the absence of bacterial injection new bone formation around Si(3)N(4) was ∼69%, compared with 24% and 36% for PEEK and Ti, respectively. In the presence of bacteria new bone formation for Si(3)N(4), Ti, and PEEK was 41%, 26%, and 21%, respectively. Live bacteria were identified around PEEK (88%) and Ti (21%) implants, whereas none were present adjacent to Si(3)N(4). Push-out strength testing demonstrated statistically superior bone growth onto Si(3)N(4) compared with Ti and PEEK. Si(3)N(4) bioceramic implants demonstrated superior new bone formation and resistance to bacterial infection compared with Ti and PEEK.
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Affiliation(s)
- T J Webster
- School of Engineering and Department of Orthopaedics, Brown University, Providence, RI 02917, USA
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