1
|
Vilamová Z, Šimonová Z, Bednář J, Mikeš P, Cieslar M, Svoboda L, Dvorský R, Rosenbergová K, Kratošová G. Silver-loaded poly(vinyl alcohol)/polycaprolactone polymer scaffold as a biocompatible antibacterial system. Sci Rep 2024; 14:11093. [PMID: 38750188 PMCID: PMC11096175 DOI: 10.1038/s41598-024-61567-5] [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: 11/17/2023] [Accepted: 05/07/2024] [Indexed: 05/18/2024] Open
Abstract
A chronic nonhealing wound poses a significant risk for infection and subsequent health complications, potentially endangering the patient's well-being. Therefore, effective wound dressings must meet several crucial criteria, including: (1) eliminating bacterial pathogen growth within the wound, (2) forming a barrier against airborne microbes, (3) promoting cell proliferation, (4) facilitating tissue repair. In this study, we synthesized 8 ± 3 nm Ag NP with maleic acid and incorporated them into an electrospun polycaprolactone (PCL) matrix with 1.6 and 3.4 µm fiber sizes. The Ag NPs were anchored to the matrix via electrospraying water-soluble poly(vinyl) alcohol (PVA), reducing the average sphere size from 750 to 610 nm in the presence of Ag NPs. Increasing the electrospraying time of Ag NP-treated PVA spheres demonstrated a more pronounced antibacterial effect. The resultant silver-based material exhibited 100% inhibition of gram-negative Escherichia coli and gram-positive Staphylococcus aureus growth within 6 h while showing non-cytotoxic effects on the Vero cell line. We mainly discuss the preparation method aspects of the membrane, its antibacterial properties, and cytotoxicity, suggesting that combining these processes holds promise for various medical applications.
Collapse
Affiliation(s)
- Zuzana Vilamová
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Poruba, 708 00, Ostrava, Czech Republic.
- Faculty of Materials Science and Technology, FMT, VSB-Technical University of Ostrava, 17. listopadu 2172/15, Poruba, 708 00, Ostrava, Czech Republic.
| | - Zuzana Šimonová
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Poruba, 708 00, Ostrava, Czech Republic
- Faculty of Material Science and Technology, Center for Advanced Innovation Technologies, VSB-Technical University of Ostrava, Ostrava, 17. listopadu 15/2172, 708 00, Ostrava, Czech Republic
| | - Jiří Bednář
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Poruba, 708 00, Ostrava, Czech Republic
| | - Petr Mikeš
- Department of Physics, Faculty of Science, Humanities and Education, Technical University of Liberec, Studentská 5, 461 17, Liberec, Czech Republic
| | - Miroslav Cieslar
- Department of Physics of Materials, Faculty of Mathemathics and Physics, Charles University, Ke Karlovu 3, 121 16, Prague, Czech Republic
| | - Ladislav Svoboda
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Poruba, 708 00, Ostrava, Czech Republic
| | - Richard Dvorský
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Poruba, 708 00, Ostrava, Czech Republic
- Faculty of Material Science and Technology, Center for Advanced Innovation Technologies, VSB-Technical University of Ostrava, Ostrava, 17. listopadu 15/2172, 708 00, Ostrava, Czech Republic
| | - Kateřina Rosenbergová
- National Institute for Nuclear, Biological and Chemical Protection, V.V.I., Kamenná 71, 262 31, Milín, Czech Republic
| | - Gabriela Kratošová
- Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 15/2172, Poruba, 708 00, Ostrava, Czech Republic
| |
Collapse
|
2
|
Townsend EC, Cheong JZA, Radzietza M, Fritz B, Malone M, Bjarnsholt T, Ousey K, Swanson T, Schultz G, Gibson ALF, Kalan LR. What is slough? Defining the proteomic and microbial composition of slough and its implications for wound healing. Wound Repair Regen 2024. [PMID: 38558438 DOI: 10.1111/wrr.13170] [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] [Received: 12/06/2023] [Revised: 02/06/2024] [Accepted: 02/19/2024] [Indexed: 04/04/2024]
Abstract
Slough is a well-known feature of non-healing wounds. This pilot study aims to determine the proteomic and microbiologic components of slough as well as interrogate the associations between wound slough components and wound healing. Ten subjects with slow-to-heal wounds and visible slough were enrolled. Aetiologies included venous stasis ulcers, post-surgical site infections and pressure ulcers. Patient co-morbidities and wound healing outcome at 3-months post-sample collection was recorded. Debrided slough was analysed microscopically, through untargeted proteomics, and high-throughput bacterial 16S-ribosomal gene sequencing. Microscopic imaging revealed wound slough to be amorphous in structure and highly variable. 16S-profiling found slough microbial communities to associate with wound aetiology and location on the body. Across all subjects, slough largely consisted of proteins involved in skin structure and formation, blood-clot formation and immune processes. To predict variables associated with wound healing, protein, microbial and clinical datasets were integrated into a supervised discriminant analysis. This analysis revealed that healing wounds were enriched for proteins involved in skin barrier development and negative regulation of immune responses. While wounds that deteriorated over time started off with a higher baseline Bates-Jensen Wound Assessment Score and were enriched for anaerobic bacterial taxa and chronic inflammatory proteins. To our knowledge, this is the first study to integrate clinical, microbiome, and proteomic data to systematically characterise wound slough and integrate it into a single assessment to predict wound healing outcome. Collectively, our findings underscore how slough components can help identify wounds at risk of continued impaired healing and serves as an underutilised biomarker.
Collapse
Affiliation(s)
- Elizabeth C Townsend
- Department of Medical Microbiology and Immunology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
- Microbiology Doctoral Training Program, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Medical Scientist Training Program, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - J Z Alex Cheong
- Department of Medical Microbiology and Immunology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
- Microbiology Doctoral Training Program, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Michael Radzietza
- Infectious Diseases and Microbiology, Western Sydney University, Sydney, Australia
| | - Blaine Fritz
- Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Matthew Malone
- Infectious Diseases and Microbiology, Western Sydney University, Sydney, Australia
| | - Thomas Bjarnsholt
- Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Microbiology, Copenhagen University Hospital, Copenhagen, Denmark
- International Wound Infection Institute, London, UK
| | - Karen Ousey
- International Wound Infection Institute, London, UK
- Institute of Skin Integrity and Infection Prevention, University of Huddersfield, West Yorkshire, UK
| | | | - Gregory Schultz
- International Wound Infection Institute, London, UK
- Department of Obstetrics and Gynecology, University of Florida, Gainesville, Florida, USA
| | - Angela L F Gibson
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Lindsay R Kalan
- Department of Medical Microbiology and Immunology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
- International Wound Infection Institute, London, UK
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada
- David Braley Centre for Antibiotic Discovery, McMaster University, Hamilton, Ontario, Canada
| |
Collapse
|
3
|
Wu JJ, Zhang F, Liu J, Yao HJ, Wang Y. Effect of silver-containing hydrofiber dressing on burn wound healing: A meta-analysis and systematic review. J Cosmet Dermatol 2023; 22:1685-1691. [PMID: 36683314 DOI: 10.1111/jocd.15639] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/15/2022] [Accepted: 01/05/2023] [Indexed: 01/24/2023]
Abstract
BACKGROUND Silver sulfadiazine is commonly used to treat local burn wounds. Aquacel-Ag is a hydrogen fiber dressing containing ionic silver that reduces burn wound infection and promotes antimicrobial activity. It is necessary to compare the efficacy of the two in the healing of burns. AIMS The aim of this study was to systematically evaluate the effect of Aquacel-Ag on burn wound healing. METHODS A computerized search of CNKI, VIP, Wanfang, SinoMed, PubMed, Cochrane Library, EMbase, Science Direct, Web of Science, Wiley Online Library, and Open Access Library databases was performed from January 1, 2000 to December 31, 2021 for randomized controlled clinical trials. The trials on Aquacel-Ag dressing and silver sulfadiazine in the treatment of burns were selected. Meta-analysis was performed using Review Manager 5.0 software. RESULTS Eleven articles were finally included, with 794 burn patients. Meta-analysis results showed that compared with patients treated with silver sulfadiazine, burn patients treated with Aquacel-Ag dressing had shorter wound healing time [MD = -2.49, 95% CI (-5.64-0.65), p = 0.12], significantly lower tumor necrosis factor-α (TNF-α) level [MD = -0.52, 95% CI (-0.82-0.22), p = 0.0008], higher wound healing rate [MD = 8.41, 95% CI (3.39-13.43), p = 0.001], fewer dressing changes [MD = -3.27, 95% CI (-4.90-1.63), p < 0.0001]. CONCLUSION Aquacel-Ag dressing can shorten wound healing time and effectively reduce inflammatory reactions in burn patients compared with silver sulfadiazine, but their safety still needs further exploration and analysis.
Collapse
Affiliation(s)
- Juan-Juan Wu
- Department of Burn and Plastic Surgery, General Hospital of Central Theater Command, Wuhan, China
| | - Fan Zhang
- Department of Burn and Plastic Surgery, General Hospital of Central Theater Command, Wuhan, China
| | - Jing Liu
- Department of Disease Control and Prevention, General Hospital of Central Theater Command, Wuhan, China
| | - Hui-Jun Yao
- Department of Burn and Plastic Surgery, General Hospital of Central Theater Command, Wuhan, China
| | - Yan Wang
- Department of Disinfection and Supply, General Hospital of Central Theater Command, Wuhan, China
| |
Collapse
|
4
|
Valachová K, Švík K, Jurčík R, Ondruška Ľ, Biró C, Šoltés L. Enhanced healing of skin wounds in ischemic rabbits using chitosan/hyaluronan/edaravone composite membranes: effects of laponite, carbon and silver-plated carbon nanofiber fillers. CHEMICAL PAPERS 2023. [DOI: 10.1007/s11696-022-02553-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
5
|
Blunck D, Schöffski O. Hyaluronic acid treatment versus standard of care in chronic wounds in a German setting: Cost‐effectiveness analysis. Health Sci Rep 2023; 6:e969. [DOI: 10.1002/hsr2.969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 11/11/2022] [Accepted: 11/17/2022] [Indexed: 12/03/2022] Open
Affiliation(s)
- Dominik Blunck
- Department of Health Management, Institute of Management Friedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU) Nuremberg Germany
| | - Oliver Schöffski
- Department of Health Management, Institute of Management Friedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU) Nuremberg Germany
| |
Collapse
|
6
|
Comparative assessment of commercially available wound gels in ex vivo human skin reveals major differences in immune response-modulatory effects. Sci Rep 2022; 12:17481. [PMID: 36261541 PMCID: PMC9581930 DOI: 10.1038/s41598-022-20997-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/21/2022] [Indexed: 01/12/2023] Open
Abstract
Wound healing is a crucial process for maintaining the function of human skin as a protective barrier to pathogens and other external stress factors. Hydrogels-in combination with antimicrobials-are often used, as moist wound care has been widely accepted as standard therapy. Recently, we reported about immune response-modulatory effects of an octenidine-based hydrogel, however little is known about the mechanism of action of other hydrogels including antiseptic molecules or chlorine-based and chlorine-releasing agents, respectively. The aim of this study was the comparative assessment of commercially available wound gels (octenilin®, Prontosan®, Lavanid®, Betadona®, ActiMaris®, Microdacyn60®, VeriforteTMmed) with regard to their effects on the secretion of distinct cytokines (IL-6, IL-8, IL-10), matrix-metalloproteinases as well as their potential to cause alterations in skin structure and apoptosis. Hence, tape-stripped human ex vivo skin biopsies were treated topically with wound gels and cultured for 48 h. Enzyme-linked immunosorbent assays and an enzyme activity assay of culture supernatants revealed that octenilin® demonstrates significantly broader anti-inflammatory and protease-inhibitory capacities than other wound gels. Further, haematoxylin & eosin as well as caspase-3 staining of treated biopsies showed that octenilin® does not alter skin morphology and shows the least interfering effect on human epidermal cells compared to untreated controls. Overall, this study clearly demonstrates totally different effects for several commercially available hydrogels in our wound model, which gives also new insight into their tissue compatibility and mode of action.
Collapse
|
7
|
Strong Antimicrobial and Healing Effects of Beta-Acids from Hops in Methicillin-Resistant Staphylococcus aureus-Infected External Wounds In Vivo. Antibiotics (Basel) 2021; 10:antibiotics10060708. [PMID: 34204644 PMCID: PMC8231114 DOI: 10.3390/antibiotics10060708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/04/2021] [Accepted: 06/10/2021] [Indexed: 11/21/2022] Open
Abstract
Staphylococcus (S.) aureus is an important causative agent of wound infections with increasing incidence in the past decades. Specifically, the emergence of methicillin-resistant S. aureus (MRSA) causes serious problems, especially in nosocomial infections. Therefore, there is an urgent need to develop of alternative or supportive antimicrobial therapeutic modalities to meet these challenges. Purified compounds from hops have previously shown promising antimicrobial effects against MRSA isolates in vitro. In this study, purified beta-acids from hops were tested for their potential antimicrobial and healing properties using a porcine model of wounds infected by MRSA. The results show highly significant antimicrobial effects of the active substance in both the powder and Ambiderman-based application forms compared to both no-treatment control and treatment with Framycoin. Moreover, the macroscopic evaluation of the wounds during the treatment using the standardized Wound Healing Continuum indicated positive effects of the beta-acids on the overall wound healing. This is further supported by the microscopic data, which showed a clear improvement of the inflammatory parameters in the wounds treated by beta-acids. Thus, using the porcine model, we demonstrate significant therapeutic effects of hops compounds in the management of wounds infected by MRSA. Beta-acids from hops, therefore, represent a suitable candidate for the treatment of non-responsive nosocomial tissue infections by MRSA.
Collapse
|