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Huang Z, Li Y, Yin W, Raby RBN, Liang H, Yu B. A magnetic-guided nano-antibacterial platform for alternating magnetic field controlled vancomycin release in staphylococcus aureus biofilm eradication. Drug Deliv Transl Res 2024:10.1007/s13346-024-01667-x. [PMID: 39020245 DOI: 10.1007/s13346-024-01667-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2024] [Indexed: 07/19/2024]
Abstract
Bacterial resilience within biofilms, rendering them up to 1000 times more resistant to antibiotic drugs, poses a formidable challenge. This study introduces a targeted biofilm eradication strategy, termed "target-penetration-killing-eradication", implemented through magnetic micro-robotic technology. Specifically, we present the development of a magnetic-guided nano-antibacterial platform designed for alternating magnetic field (AMF) controlled vancomycin release in the eradication of Staphylococcus aureus biofilms. To address the issue of premature vancomycin release in physiological conditions, we employed a temperature-sensitive linking agent, 4,4'-azobis(4-cyano valeric acid), facilitating the conjugation of vancomycin onto Fe3O4/CS nanocomposites, resulting in the novel construct Fe3O4@CS-ACVA-VH. The release mechanism adheres to first-order kinetics and Fickian diffusion, with each 10-min AMF treatment releasing approximately 8.4 ± 1.1% of vancomycin. The potency of vancomycin in the release solution was similar to that of the original drug (MIC: 7.4 ± 3.5 vs. 5.6 μg/mL). Fe3O4@CS-ACVA-VH exhibited sustained antibacterial efficacy, inhibiting bacterial growth for four consecutive days and preventing the formation of bacterial biofilms on its surface. Contact-inhibition bacterial activity of Fe3O4@CS-ACVA-VH against S. aureus was 0.046875 mg/mL. Conceptually validating our approach, we emphasize Fe3O4@CS-ACVA-VH's exceptional ability to penetrate S. aureus biofilms under static magnetic field attraction. Furthermore, the nano-platform offers the unique advantage of on-demand vancomycin release through alternating magnetic field stimulation, effectively clearing a larger biofilm area. This multifunctional nano-platform demonstrates magnetic-guided biofilm penetration followed by controlled vancomycin release, presenting a promising strategy for enhanced biofilm eradication.
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Affiliation(s)
- Zhi Huang
- Institute of Biomedical Engineering, School of Basic Medical Sciences, Central South University, Changsha, 410083, China
| | - Yuankai Li
- Institute of Biomedical Engineering, School of Basic Medical Sciences, Central South University, Changsha, 410083, China
| | - Wang Yin
- Institute of Biomedical Engineering, School of Basic Medical Sciences, Central South University, Changsha, 410083, China
| | - Randy Bachelard Nziengui Raby
- Institute of Biomedical Engineering, School of Basic Medical Sciences, Central South University, Changsha, 410083, China
| | - Haifeng Liang
- Orthopedic and Traumatology Department, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
- Department of Orthopedics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510150, China.
| | - Bo Yu
- Orthopedic and Traumatology Department, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
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Kanakaris NK, Giannoudis PV. Biofilm and its implications postfracture fixation: All I need to know. OTA Int 2021; 4:e107(1-7). [PMID: 37609478 PMCID: PMC10441677 DOI: 10.1097/oi9.0000000000000107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/10/2020] [Accepted: 12/11/2020] [Indexed: 08/24/2023]
Abstract
Biofilm represents an organized multicellular community of bacteria having a complex 3D structure, formed by bacterial cells and their self-produced extracellular matrix. It usually attaches to any foreign body or fixation implant. It acts as a physical protective barrier of the bacteria from the penetration of antibodies, bacteriophages, granulocytes and biocides, antiseptics, and antibiotics. Biofilm-related infections will increase in the near future. This group of surgical site infections is the most difficult to diagnose, to suppress, to eradicate, and in general to manage. Multispecialty teams involved in all stages of care are an effective way to improve results and save resources and time for the benefit of patients and the health system. Significant steps have occurred recently in the prevention and development of clever tools that we can employ in this everlasting fight with the bacteria. Herein, we attempt to describe the nature and role of the "biofilm" to the specific clinical setting of surgical site infections in the field of orthopaedic trauma surgery.
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Affiliation(s)
- Nikolaos K Kanakaris
- Academic Department of Trauma and Orthopaedics, School of Medicine, University of Leeds
- NIHR Leeds Biomedical Research Center, Chapel Allerton Hospital, Leeds, United Kingdom
| | - Peter V Giannoudis
- Academic Department of Trauma and Orthopaedics, School of Medicine, University of Leeds
- NIHR Leeds Biomedical Research Center, Chapel Allerton Hospital, Leeds, United Kingdom
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Yin W, Xu S, Wang Y, Zhang Y, Chou SH, Galperin MY, He J. Ways to control harmful biofilms: prevention, inhibition, and eradication. Crit Rev Microbiol 2020; 47:57-78. [PMID: 33356690 DOI: 10.1080/1040841x.2020.1842325] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Biofilms are complex microbial architectures that encase microbial cells in a matrix comprising self-produced extracellular polymeric substances. Microorganisms living in biofilms are much more resistant to hostile environments than their planktonic counterparts and exhibit enhanced resistance against the microbicides. From the human perspective, biofilms can be classified into beneficial, neutral, and harmful. Harmful biofilms impact food safety, cause plant and animal diseases, and threaten medical fields, making it urgent to develop effective and robust strategies to control harmful biofilms. In this review, we discuss various strategies to control biofilm formation on infected tissues, implants, and medical devices. We classify the current strategies into three main categories: (i) changing the properties of susceptible surfaces to prevent biofilm formation; (ii) regulating signalling pathways to inhibit biofilm formation; (iii) applying external forces to eradicate the biofilm. We hope this review would motivate the development of innovative and effective strategies for controlling harmful biofilms.
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Affiliation(s)
- Wen Yin
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Siyang Xu
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Yiting Wang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Yuling Zhang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Shan-Ho Chou
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Michael Y Galperin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, USA
| | - Jin He
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
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A comparative carbon footprint analysis of disposable and reusable vaginal specula. Am J Obstet Gynecol 2020; 223:225.e1-225.e7. [PMID: 32067971 DOI: 10.1016/j.ajog.2020.02.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/28/2019] [Accepted: 02/03/2020] [Indexed: 01/08/2023]
Abstract
BACKGROUND Healthcare systems in the United States have increasingly turned toward the use of disposable medical equipment in an attempt to save time, lower costs, and reduce the transmission of infections. However, the use of disposable instruments is associated with increased solid waste production and may have negative impacts on the environment, such as increased greenhouse gas emissions. OBJECTIVE The purpose of this study was to inform this discussion; we applied life cycle assessment methods to evaluate the carbon footprints of 3 vaginal specula: a single-use acrylic model and 2 reusable stainless steel models. STUDY DESIGN The functional unit of the study was defined as the completion of 20 gynecologic examinations by either type of speculum. The greenhouse gas emissions (eg, carbon dioxide, methane, nitrous oxide) across all life cycle stages, which includes material production and manufacturing, transportation, use and reprocessing, and end-of-life, were analyzed with the use of SimaPro life cycle assessment software and converted into carbon dioxide equivalents. RESULTS The reusable stainless steel grade 304 speculum was found to have a lesser carbon footprint over multiple model scenarios (different reprocessing techniques, autoclave loading/efficiency, and number of uses) than either the reusable stainless steel grade 316 or the disposable acrylic specula. The material production and manufacturing phase contributed most heavily to the total life cycle carbon footprint of the acrylic speculum, whereas the use and reprocessing phase contributed most to the carbon footprints of both stainless steel specula. CONCLUSION The use of disposable vaginal specula is associated with increased greenhouse gas equivalents compared with reusable alternatives with no significant difference in clinical utility. These findings can be used to inform decision-making by healthcare systems, because they weigh a wide range of considerations in making final purchase decisions; similar analytic methods can and should be applied to other components of health systems' waste streams.
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Achinas S, Yska SK, Charalampogiannis N, Krooneman J, Euverink GJW. A Technological Understanding of Biofilm Detection Techniques: A Review. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3147. [PMID: 32679710 PMCID: PMC7412299 DOI: 10.3390/ma13143147] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/08/2020] [Accepted: 07/13/2020] [Indexed: 12/12/2022]
Abstract
Biofouling is a persistent problem in almost any water-based application in several industries. To eradicate biofouling-related problems in bioreactors, the detection of biofilms is necessary. The current literature does not provide clear supportive information on selecting biofilm detection techniques that can be applied to detect biofouling within bioreactors. Therefore, this research aims to review all available biofilm detection techniques and analyze their characteristic properties to provide a comparative assessment that researchers can use to find a suitable biofilm detection technique to investigate their biofilms. In addition, it discusses the confluence of common bioreactor fabrication materials in biofilm formation.
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Affiliation(s)
- Spyridon Achinas
- Faculty of Science and Engineering, University of Groningen, 9747 AG Groningen, The Netherlands; (S.K.Y.); (J.K.); (G.J.W.E.)
| | - Stijn Keimpe Yska
- Faculty of Science and Engineering, University of Groningen, 9747 AG Groningen, The Netherlands; (S.K.Y.); (J.K.); (G.J.W.E.)
| | | | - Janneke Krooneman
- Faculty of Science and Engineering, University of Groningen, 9747 AG Groningen, The Netherlands; (S.K.Y.); (J.K.); (G.J.W.E.)
| | - Gerrit Jan Willem Euverink
- Faculty of Science and Engineering, University of Groningen, 9747 AG Groningen, The Netherlands; (S.K.Y.); (J.K.); (G.J.W.E.)
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Craft KM, Nguyen JM, Berg LJ, Townsend SD. Methicillin-resistant Staphylococcus aureus (MRSA): antibiotic-resistance and the biofilm phenotype. MEDCHEMCOMM 2019; 10:1231-1241. [PMID: 31534648 PMCID: PMC6748282 DOI: 10.1039/c9md00044e] [Citation(s) in RCA: 177] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 03/12/2019] [Indexed: 12/18/2022]
Abstract
Staphylococcus aureus (S. aureus) is an asymptomatic colonizer of 30% of all human beings. While generally benign, antibiotic resistance contributes to the success of S. aureus as a human pathogen. Resistance is rapidly evolved through a wide portfolio of mechanisms including horizontal gene transfer and chromosomal mutation. In addition to traditional resistance mechanisms, a special feature of S. aureus pathogenesis is its ability to survive on both biotic and abiotic surfaces in the biofilm state. Due to this characteristic, S. aureus is a leading cause of human infection. Methicillin-resistant S. aureus (MRSA) in particular has emerged as a widespread cause of both community- and hospital-acquired infections. Currently, MRSA is responsible for 10-fold more infections than all multi-drug resistant (MDR) Gram-negative pathogens combined. Recently, MRSA was classified by the World Health Organization (WHO) as one of twelve priority pathogens that threaten human health. In this targeted mini-review, we discuss MRSA biofilm production, the relationship of biofilm production to antibiotic resistance, and front-line techniques to defeat the biofilm-resistance system.
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Affiliation(s)
- Kelly M Craft
- Department of Chemistry , Vanderbilt University , 7300 Stevenson Science Center , Nashville , TN 37235 , USA .
| | - Johny M Nguyen
- Department of Chemistry , Vanderbilt University , 7300 Stevenson Science Center , Nashville , TN 37235 , USA .
| | - Lawrence J Berg
- Department of Chemistry , Vanderbilt University , 7300 Stevenson Science Center , Nashville , TN 37235 , USA .
| | - Steven D Townsend
- Department of Chemistry , Vanderbilt University , 7300 Stevenson Science Center , Nashville , TN 37235 , USA .
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McEvoy JP, Martin P, Khaleel A, Dissanayeke S. Titanium Kirschner Wires Resist Biofilms Better Than Stainless Steel and Hydroxyapatite-coated Wires: An In Vitro Study. Strategies Trauma Limb Reconstr 2019; 14:57-64. [PMID: 32742415 PMCID: PMC7376582 DOI: 10.5005/jp-journals-10080-1426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Aim External fixation surgery is frequently complicated by percutaneous pin site infection focused on the surface of the fixator pin. The primary aim of this study was to compare biofilm growth of clinically isolated pin site bacteria on Kirschner wires of different materials. Materials and methods Two commonly infecting species, Staphylococcus epidermidis and Proteus mirabilis, were isolated from patients’ pin sites. A stirred batch bioreactor was used to grow these bacteria as single culture and co-cultured biofilms on Kirschner wires made of three different materials: stainless steel, hydroxyapatite-coated steel and titanium alloy. Results We found that the surface density of viable cells within these biofilms was 3x higher on stainless steel and 4.5x higher on hydroxyapatite-coated wires than on the titanium wires. Conclusion Our results suggest that the lower rates of clinical pin site infection seen with titanium Kirschner wires are due to, at least in part, titanium’s better bacterial biofilm resistance. Clinical significance Our results are consistent with clinical studies which have found that pin site infection rates are reduced by the use of titanium relative to stainless steel or hydroxyapatite-coated pins. How to cite this article McEvoy JP, Martin P, Khaleel A, et al. Titanium Kirschner Wires Resist Biofilms Better Than Stainless Steel and Hydroxyapatite-coated Wires: An In Vitro Study. Strategies Trauma Limb Reconstr 2019;14(2):57–64.
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Affiliation(s)
- James P McEvoy
- Department of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, UK
| | - Philip Martin
- Department of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, UK
| | - Arshad Khaleel
- Rowley Bristow Orthopaedic Unit, Ashford and St Peter's Hospitals NHS Foundation Trust, Chertsey, Surrey, UK
| | - Shobana Dissanayeke
- Department of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, UK
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