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Bajuri MY, Nordin A. Activated carbon cloth versus silver-based dressings in a population with diabetic foot ulcer: a randomised controlled trial. J Wound Care 2024; 33:298-303. [PMID: 38683771 DOI: 10.12968/jowc.2024.33.5.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
OBJECTIVE Activated carbon cloth (ACC), known as Zorflex dressing, has emerged as an innovative approach in managing bacterial infection in diabetic foot ulcer (DFU) treatment. This pilot study was undertaken to determine the efficacy of Zorflex ACC dressing (Chemviron Carbon Cloth Division, UK) compared to standard silver-based dressing on DFUs. METHOD An open label, comparative, randomised controlled trial enrolling patients who attended the diabetic foot clinic was conducted between August 2022 and August 2023. The primary endpoint was a difference of 20% in wound area reduction with the ACC dressing compared to silver-based dressing within eight weeks. The secondary endpoints were proportion of complete healing, time to healing and adverse events. RESULTS The cohort comprised 40 patients. The mean wound reduction percentage at 8 weeks for patients in the ACC arm was 85.40±16.00% compared with 65.08±16.36% in the silver-based dressing arm. Complete healing was observed in six of 20 patients in the ACC arm compared to two of 20 in the silver-based dressing arm. CONCLUSION These data suggest that the ACC dressing promotes better ulcer healing in DFU patients than the silver-based dressing.
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Affiliation(s)
- Mohd Yazid Bajuri
- Department of Orthopaedics and Traumatology, Hospital Canselor Tunku Muhriz, Universiti Kebangsaan Malaysia, Jalan Yaacob Latiff, Bandar Tun Razak 56000 Cheras, Malaysia
| | - Abid Nordin
- Department of Orthopaedics and Traumatology, Hospital Canselor Tunku Muhriz, Universiti Kebangsaan Malaysia, Jalan Yaacob Latiff, Bandar Tun Razak 56000 Cheras, Malaysia
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Hasatsri S, Jantrapanukorn B. Film dressings from Thai mango seed kernel extracts versus nanocrystalline silver dressings in antibacterial properties. JOURNAL OF PHARMACY & PHARMACEUTICAL SCIENCES : A PUBLICATION OF THE CANADIAN SOCIETY FOR PHARMACEUTICAL SCIENCES, SOCIETE CANADIENNE DES SCIENCES PHARMACEUTIQUES 2024; 27:12674. [PMID: 38606395 PMCID: PMC11006813 DOI: 10.3389/jpps.2024.12674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/15/2024] [Indexed: 04/13/2024]
Abstract
Introduction: The extract from the Mango Seed Kernel (MSK) has been documented to exhibit antibacterial activity against Gram-positive and Gram-negative bacteria, including Staphylococcus aureus and Pseudomonas aeruginosa. This suggests that biomaterials containing MSK extract could be a viable alternative to conventional wound treatments, such as nanocrystalline silver dressings. Despite this potential, there is a notable gap in the literature regarding comparing the antibacterial effectiveness of MSK film dressings with nanocrystalline silver dressings. This study aimed to develop film dressings containing MSK extract and evaluate their antibacterial properties compared to nanocrystalline silver dressings. Additionally, the study aimed to assess other vital physical properties of these dressings critical for effective wound care. Materials and methods: We prepared MSK film dressings from two cultivars of mango from Thailand, 'Chokanan' and 'Namdokmai'. The inhibition-zone method was employed to determine the antibacterial property. The morphology and chemical characterization of the prepared MSK film dressings were examined with scanning electron microscopy (SEM) and Fourier-Transform Infrared Spectroscopy (FTIR), respectively. The absorption of pseudo-wound exudate and water vapor transmission rate (WVTR) of film dressings were evaluated. Results: The results showed that 40% of MSKC film dressing had the highest inhibition zone (20.00 ± 0.00 mm against S. aureus and 17.00 ± 1.00 mm against P. aeruginosa) and 20%, 30%, and 40% of MSKC and MSKN film dressings had inhibition zones similar to nanocrystalline silver dressing for both S. aureus and P. aeruginosa (p > 0.05). In addition, all concentrations of the MSK film dressings had low absorption capacity, and Chokanan MSK (MSKC) film dressings had a higher WVTR than Namdokmai MSK (MSKN) film dressings. Conclusion: 20%, 30%, and 40% of MSK film dressing is nearly as effective as nanocrystalline silver dressing. Therefore, it has the potential to be an alternative antibacterial dressing and is suitable for wounds with low exudate levels.
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Affiliation(s)
- Sukhontha Hasatsri
- Department of Pharmacy Practice, College of Pharmacy, Rangsit University, Pathum Thani, Thailand
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3
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Robertson SN, Romero M, Fenn S, Kohler Riedi PL, Cámara M. Development, characterization, and evaluation of a simple polymicrobial colony biofilm model for testing of antimicrobial wound dressings. J Appl Microbiol 2024; 135:lxae042. [PMID: 38366933 DOI: 10.1093/jambio/lxae042] [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: 08/15/2023] [Revised: 01/12/2024] [Accepted: 02/15/2024] [Indexed: 02/19/2024]
Abstract
Chronic wound infections are generally of polymicrobial nature with aerobic and anaerobic bacteria, as well as fungi frequently observed in them. Wound treatment involves a series of steps, including debridement of the wound, flushing, and often the use of multiple wound dressings many of which are antimicrobial. Yet, many wound dressings are tested versus single species of planktonic microbes, which fails to mirror the real-life presence of biofilms. AIMS Simple biofilm models are the first step to testing of any antimicrobial and wound dressing; therefore, the aim of this study was to develop and validate a simple polymicrobial colony biofilm wound model comprised of Pseudomonas aeruginosa, Staphylococcus aureus, and Candida albicans on RPMI-1640 agar. The model was then used to evaluate the topical disinfectant chlorohexidine and four commercially available wound dressings using the polymicrobial model. The model used was as a starting point to mimic debridement in clinical care of wounds and the effectiveness of wound dressings evaluated afterwards. METHODS AND RESULTS Planktonic assessment using AATCC100-2004 demonstrated that all antimicrobial wound dressings reduced the planktonic microbial burden below the limit of detection; however, when challenged with polymicrobial colony biofilms, silver wound dressings showed limited effectiveness (1-2 log CFU reductions). In contrast, a single iodine releasing wound dressing showed potent antibiofilm activity reducing all species CFUs below the limit of detection (>6-10 log) depending on the species. A disrupted biofilm model challenge was performed to represent the debridement of a wound and wound silver-based wound dressings were found to be marginally more effective than in whole colony biofilm challenges while the iodine containing wound dressing reduced microbial recovery below the limit of detection. CONCLUSIONS In this model, silver dressings were ineffective versus the whole colony biofilms but showed some recovery of activity versus the disrupted colony biofilm. The iodine wound dressing reduced the viability of all species below the level of detection. This suggests that mode of action of wound dressing should be considered for the type of biofilm challenge as should the clinical use, e.g. debridement.
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Affiliation(s)
- Shaun N Robertson
- National Biofilms Innovation Centre, School of Life Sciences, Biodiscovery Institute, University of Nottingham, NG7 2RD Nottingham, United Kingdom
| | - Manuel Romero
- National Biofilms Innovation Centre, School of Life Sciences, Biodiscovery Institute, University of Nottingham, NG7 2RD Nottingham, United Kingdom
- Department of Microbiology and Parasitology, Faculty of Biology-CIBUS, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
- Aquatic One Health Research Center (ARCUS), Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Samuel Fenn
- National Biofilms Innovation Centre, School of Life Sciences, Biodiscovery Institute, University of Nottingham, NG7 2RD Nottingham, United Kingdom
- Schools of Microbiology and Medicine, University College Cork, and APC Microbiome Ireland, Cork T12 TP07, Ireland
| | | | - Miguel Cámara
- National Biofilms Innovation Centre, School of Life Sciences, Biodiscovery Institute, University of Nottingham, NG7 2RD Nottingham, United Kingdom
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Strickland AD, Ozturk M, Conti T, Tabatabaei F. Copper-based dressing: Efficacy in a wound infection of ex vivo human skin. Tissue Cell 2023; 84:102196. [PMID: 37611328 DOI: 10.1016/j.tice.2023.102196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/28/2023] [Accepted: 08/07/2023] [Indexed: 08/25/2023]
Abstract
This study aimed to evaluate the wound healing and antibacterial effects of two experimental copper dressings compared to a commercial silver dressing. Burn wounds were created in the ex vivo human skin biopsies, then were infected by Staphylococcus aureus. Tissues were treated with copper dressings, silver dressing, or a dressing without any antibacterial component. An infected wound tissue without treatment was considered as the control group. Three days after treatments, tissues were analyzed by bacterial count and histology staining, while their media was used to assess the expression of cytokines and chemokines. Histology staining confirmed the presence of second-degree burn wounds and colonization of bacteria in the surface and superficial layer of tissues. The results demonstrated a higher antibacterial effect, improved epithelium formation, and decreased wound area in one of the copper dressings compared to other dressings. Markers associated with infection control increased in both the copper and silver-treated groups. The cytokine profiling analysis revealed increased expression of markers related to angiogenesis and anti-inflammatory responses and decreased pro-inflammatory cytokine responses in the infected wound treated with one of the copper dressings. Our results confirmed the efficacy of the experimental copper dressing in reducing bacteria and promoting wound healing.
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Chou SP, Yen YH, Tseng YT, Chen CP, Ke HH, Lee YK, Su YC, Hsu H. Multi-disciplinary management of type 1 and 2 skin tears using a silver-based hydrofiber dressing. Medicine (Baltimore) 2023; 102:e35112. [PMID: 37713868 PMCID: PMC10508467 DOI: 10.1097/md.0000000000035112] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 08/16/2023] [Indexed: 09/17/2023] Open
Abstract
Skin tear is a common problem encountered in the emergency department. If it is not properly managed, it can lead to wound infection, skin necrosis and a need for further surgical intervention and skin grafting. Current management is to cleanse the wound, replace the thin skin tear followed by coverage with a dressing that is inducive for wound healing. Several dressings have been suggested for the coverage of these wounds. But, up to now, there has been no mention of the use of a silver-based hydrofiber dressing in the management of this condition. The objective of this study was to explore the use of a silver-based hydrofiber dressing for the management of paper-thin skin tears. We retrospectively reviewed all patients with Type 1 or 2 skin tears that had undergone management using a silver-based hydrofiber dressing between October 2019 and October 2020. Demographic data and medical history was obtained by retrospective chart review. Data that was collected included: age, sex, comorbid illnesses, defect location, defect size, complications, number of times the silver-based hydrofiber dressing was replaced and the number of days required to achieve complete wound healing. A total of 65 patients were included in the study. There were 42 males and 23 females. There were 28 patients whose age was greater then 85 years old, of which 14 patients were over 90 years old. The mean number of outpatient visits was 2. The mean defect size was 33 cm2 (range 1 cm × 1 cm to 18 × 10 cm). The mean number of days required for total wound healing was 13 days (range 7-21). We did not encounter any patients that required further surgical debridement or split-thickness skin grafting. The use of a silver-based hydrofiber dressing was well tolerated by the elderly population as it provided an easy, efficient, economical and effective form of management of skin tears. We suggest that a silver-based hydrofiber dressing can be used as a first-line treatment method for type 1 and 2 skin tears.
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Affiliation(s)
- Shu-Ping Chou
- Department of Nursing, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Dalin, Taiwan
| | - Ya-Hui Yen
- Department of Nursing, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
| | - Ya-Ting Tseng
- Department of Nursing, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Dalin, Taiwan
| | - Chiou-Ping Chen
- Department of Nursing, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Dalin, Taiwan
| | - Hsin-Hua Ke
- Department of Nursing, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Dalin, Taiwan
| | - Yi-Kung Lee
- Department of Emergency Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Dalin, Taiwan
- School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Yung-Cheng Su
- Department of Emergency Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi City, Taiwan
| | - Honda Hsu
- Division of Plastic Surgery, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Dalin, Taiwan
- School of Medicine, Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan
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Machková A, Vaňková E, Obrová K, Fürhacker P, Košutová T, Lion T, Hanuš J, Scholtz V. Silver nanoparticles with plasma-polymerized hexamethyldisiloxane coating on 3D printed substrates are non-cytotoxic and effective against respiratory pathogens. Front Microbiol 2023; 14:1217617. [PMID: 37637122 PMCID: PMC10450633 DOI: 10.3389/fmicb.2023.1217617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/31/2023] [Indexed: 08/29/2023] Open
Abstract
Due to the emerging resistance of microorganisms and viruses to conventional treatments, the importance of self-disinfecting materials is highly increasing. Such materials could be silver or its nanoparticles (AgNPs), both of which have been studied for their antimicrobial effect. In this study, we compared the biological effects of AgNP coatings with and without a plasma-polymerized hexamethyldisiloxane (ppHMDSO) protective film to smooth silver or copper coatings under three ambient conditions that mimic their potential medical use (dry or wet environments and an environment simulating the human body). The coatings were deposited on 3D printed polylactic acid substrates by DC magnetron sputtering, and their surface morphology was visualized using scanning electron microscopy. Cytotoxicity of the samples was evaluated using human lung epithelial cells A549. Furthermore, antibacterial activity was determined against the Gram-negative pathogenic bacterium Pseudomonas aeruginosa PAO1 and antiviral activity was assessed using human rhinovirus species A/type 2. The obtained results showed that overcoating of AgNPs with ppHMDSO creates the material with antibacterial and antiviral activity and at the same time without a cytotoxic effect for the surrounding tissue cells. These findings suggest that the production of 3D printed substrates coated with a layer of AgNPs-ppHMDSO could have potential applications in the medical field as functional materials.
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Affiliation(s)
- Anna Machková
- Department of Physics and Measurements, Faculty of Chemical Engineering, University of Chemistry and Technology in Prague, Prague, Czechia
| | - Eva Vaňková
- Department of Physics and Measurements, Faculty of Chemical Engineering, University of Chemistry and Technology in Prague, Prague, Czechia
| | - Klára Obrová
- St. Anna Children’s Cancer Research Institute, Vienna, Austria
| | - Paola Fürhacker
- St. Anna Children’s Cancer Research Institute, Vienna, Austria
| | - Tereza Košutová
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague, Czechia
| | - Thomas Lion
- St. Anna Children’s Cancer Research Institute, Vienna, Austria
- Department of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Jan Hanuš
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague, Czechia
| | - Vladimír Scholtz
- Department of Physics and Measurements, Faculty of Chemical Engineering, University of Chemistry and Technology in Prague, Prague, Czechia
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Caracciolo PC, Abraham GA, Battaglia ES, Bongiovanni Abel S. Recent Progress and Trends in the Development of Electrospun and 3D Printed Polymeric-Based Materials to Overcome Antimicrobial Resistance (AMR). Pharmaceutics 2023; 15:1964. [PMID: 37514150 PMCID: PMC10385409 DOI: 10.3390/pharmaceutics15071964] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/11/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Antimicrobial resistance (AMR) developed by microorganisms is considered one of the most critical public health issues worldwide. This problem is affecting the lives of millions of people and needs to be addressed promptly. Mainly, antibiotics are the substances that contribute to AMR in various strains of bacteria and other microorganisms, leading to infectious diseases that cannot be effectively treated. To avoid the use of antibiotics and similar drugs, several approaches have gained attention in the fields of materials science and engineering as well as pharmaceutics over the past five years. Our focus lies on the design and manufacture of polymeric-based materials capable of incorporating antimicrobial agents excluding the aforementioned substances. In this sense, two of the emerging techniques for materials fabrication, namely, electrospinning and 3D printing, have gained significant attraction. In this article, we provide a summary of the most important findings that contribute to the development of antimicrobial systems using these technologies to incorporate various types of nanomaterials, organic molecules, or natural compounds with the required property. Furthermore, we discuss and consider the challenges that lie ahead in this research field for the coming years.
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Affiliation(s)
- Pablo C Caracciolo
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
| | - Gustavo A Abraham
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
| | - Ernesto S Battaglia
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
| | - Silvestre Bongiovanni Abel
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
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Dutt Y, Pandey RP, Dutt M, Gupta A, Vibhuti A, Vidic J, Raj VS, Chang CM, Priyadarshini A. Therapeutic applications of nanobiotechnology. J Nanobiotechnology 2023; 21:148. [PMID: 37149615 PMCID: PMC10163736 DOI: 10.1186/s12951-023-01909-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/24/2023] [Indexed: 05/08/2023] Open
Abstract
Nanobiotechnology, as a novel and more specialized branch of science, has provided a number of nanostructures such as nanoparticles, by utilizing the methods, techniques, and protocols of other branches of science. Due to the unique features and physiobiological characteristics, these nanostructures or nanocarriers have provided vast methods and therapeutic techniques, against microbial infections and cancers and for tissue regeneration, tissue engineering, and immunotherapies, and for gene therapies, through drug delivery systems. However, reduced carrying capacity, abrupt and non-targeted delivery, and solubility of therapeutic agents, can affect the therapeutic applications of these biotechnological products. In this article, we explored and discussed the prominent nanobiotechnological methods and products such as nanocarriers, highlighted the features and challenges associated with these products, and attempted to conclude if available nanostructures offer any scope of improvement or enhancement. We aimed to identify and emphasize the nanobiotechnological methods and products, with greater prospect and capacity for therapeutic improvements and enhancements. We found that novel nanocarriers and nanostructures, such as nanocomposites, micelles, hydrogels, microneedles, and artificial cells, can address the associated challenges and inherited drawbacks, with help of conjugations, sustained and stimuli-responsive release, ligand binding, and targeted delivery. We recommend that nanobiotechnology, despite having few challenges and drawbacks, offers immense opportunities that can be harnessed in delivering quality therapeutics with precision and prediction. We also recommend that, by exploring the branched domains more rigorously, bottlenecks and obstacles can also be addressed and resolved in return.
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Affiliation(s)
- Yogesh Dutt
- Department of Microbiology, SRM University, 39, Rajiv Gandhi Education City, Post Office P.S. Rai, Sonepat, Haryana, 131029, India
| | - Ramendra Pati Pandey
- Department of Microbiology, SRM University, 39, Rajiv Gandhi Education City, Post Office P.S. Rai, Sonepat, Haryana, 131029, India.
- Department of Biotechnology, SRM University, 39, Rajiv Gandhi Education City, Post Office P.S. Rai, Sonepat, Haryana, 131029, India.
| | - Mamta Dutt
- Mamta Dental Clinic, Opposite Sector 29, Main Badkhal Road, Faridabad, Haryana, 121002, India
| | - Archana Gupta
- Department of Biotechnology, SRM University, 39, Rajiv Gandhi Education City, Post Office P.S. Rai, Sonepat, Haryana, 131029, India
| | - Arpana Vibhuti
- Department of Biotechnology, SRM University, 39, Rajiv Gandhi Education City, Post Office P.S. Rai, Sonepat, Haryana, 131029, India
| | - Jasmina Vidic
- Université Paris-Saclay, Micalis Institute, INRAE, AgroParisTech, 78350, Jouy-en-Josas, France
| | - V Samuel Raj
- Department of Microbiology, SRM University, 39, Rajiv Gandhi Education City, Post Office P.S. Rai, Sonepat, Haryana, 131029, India
| | - Chung-Ming Chang
- Master & Ph.D Program in Biotechnology Industry, Chang Gung University, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 33302, Taiwan (ROC).
| | - Anjali Priyadarshini
- Department of Microbiology, SRM University, 39, Rajiv Gandhi Education City, Post Office P.S. Rai, Sonepat, Haryana, 131029, India.
- Department of Biotechnology, SRM University, 39, Rajiv Gandhi Education City, Post Office P.S. Rai, Sonepat, Haryana, 131029, India.
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Doherty C, Byrne CV, Baqader S, El-Chami C, McBain AJ, Thomason HA. Anti-biofilm effects and healing promotion by silver oxynitrate-based dressings. Sci Rep 2023; 13:2014. [PMID: 36737464 PMCID: PMC9898495 DOI: 10.1038/s41598-022-26856-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 12/21/2022] [Indexed: 02/05/2023] Open
Abstract
Microbial growth within a wound often manifests as biofilms, which can prevent healing and is difficult to eradicate. Novel silver dressings claim to combat wound infection, but anti-biofilm efficacy and effects on healing independent of infection are often unclear. Using in vitro and in vivo S. aureus and P. aeruginosa biofilm models, we report the efficacy of a dressing which produces Ag1+ ions; an Ag1+ dressing containing ethylenediaminetetraacetic acid and benzethonium chloride (Ag1+/EDTA/BC), and a dressing containing silver oxynitrate (Ag Oxysalts) which produces Ag1+, Ag2+ and Ag3+ ions, against wound biofilms, and their effects on healing. Ag1+ dressings had minimal effect on in vitro and murine (C57BL/6j) wound biofilms. In contrast, Ag Oxysalts and Ag1+/EDTA/BC dressings significantly reduced viable bacteria within in vitro biofilms and demonstrated a visible reduction in bacteria and EPS components within murine wound biofilms. The dressings had different effects on the healing of biofilm-infected and uninfected wounds, with Ag Oxysalts dressings having a greater beneficial effect on re-epithelialisation, wound size and inflammation than the control treatment and the other silver dressings. The different physicochemical properties of the silver dressings result in varied effects on wound biofilms and healing which should be considered when selecting dressings to treat biofilm-infected wounds.
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Affiliation(s)
- Christopher Doherty
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PT, UK
| | - Charlotte V Byrne
- 3M Medical Solutions Division. King Edward Court, King Edward Road, Knutsford, Cheshire, WA16 0BE, UK
| | - Sajwa Baqader
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PT, UK.,Community Nursing and Healthcare Department, Faculty of Nursing, Umm Al-Qura University, Mecca, Saudi Arabia
| | - Cecile El-Chami
- School of Biological Sciences, Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Andrew J McBain
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PT, UK.
| | - Helen A Thomason
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, M13 9PT, UK. .,3M Medical Solutions Division. King Edward Court, King Edward Road, Knutsford, Cheshire, WA16 0BE, UK.
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Silver Nanoparticles Phytofabricated through Azadirachta indica: Anticancer, Apoptotic, and Wound-Healing Properties. Antibiotics (Basel) 2023; 12:antibiotics12010121. [PMID: 36671322 PMCID: PMC9855199 DOI: 10.3390/antibiotics12010121] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/22/2022] [Accepted: 12/26/2022] [Indexed: 01/10/2023] Open
Abstract
Silver nanoparticles (AgNPs) have unlocked numerous novel disciplines in nanobiotechnological protocols due to their larger surface area-to-volume ratios, which are attributed to the marked reactivity of nanosilver, and due to their extremely small size, which enables AgNPs to enter cells, interact with organelles, and yield distinct biological effects. AgNPs are capable of bypassing immune cells, staying in the system for longer periods and with a higher distribution, reaching target tissues at higher concentrations, avoiding diffusion to adjacent tissues, releasing therapeutic agents or drugs for specific stimuli to achieve a longer duration at a specific rate, and yielding desired effects. The phytofabrication of AgNPs is a cost-effective, one-step, environmentally friendly, and easy method that harnesses sustainable resources and naturally available components of plant extracts (PEs). In addition, it processes various catalytic activities for the degradation of various organic pollutants. For the phytofabrication of AgNPs, plant products can be used in a multifunctional manner as a reducing agent, a stabilizing agent, and a functionalizing agent. In addition, they can be used to curtail the requirements for any additional stabilizing agents and to help the reaction stages subside. Azadirachta indica, a very common and prominent medicinal plant grown throughout the Indian subcontinent, possesses free radical scavenging and other pharmaceutical properties via the regulation of proinflammatory enzymes, such as COX and TOX. It also demonstrates anticancer activities through cell-signaling pathways, modulating tumor-suppressing genes such as p53 and pTEN, transcriptional factors, angiogenesis, and apoptosis via bcl2 and bax. In addition, it possesses antibacterial activities. Phytofabricated AgNPs have been applied in the areas of drug delivery, bioimaging, biosensing, cancer treatment, cosmetics, and cell biology. Such pharmaceutical and biological activities of phytofabricated AgNPs are attributed to more than 300 phytochemicals found in Azadirachta indica, and are especially abundant in flavonoids, polyphenols, diterpenoids, triterpenoids, limonoids, tannins, coumarin, nimbolide, azadirachtin, azadirone, azadiradione, and gedunin. Parts of Azadirachta indica, including the leaves in various forms, have been used for wound healing or as a repellent. This study was aimed at examining previously biosynthesized (from Azadirachta indica) AgNPs for anticancer, wound-healing, and antimicrobial actions (through MTT reduction assay, scratch assay, and microbroth dilution methods, respectively). Additionally, apoptosis in cancer cells and the antibiofilm capabilities of AgNPs were examined through caspase-3 expression, dentine block, and crystal violet methods. We found that biogenic silver nanoparticles are capable of inducing cytotoxicity in HCT-116 colon carcinoma cells (IC50 of 744.23 µg/mL, R2: 0.94), but are ineffective against MCF-7 breast cancer cells (IC50 >> 1000 µg/mL, R2: 0.86). AgNPs (IC50 value) induced a significant increase in caspase-3 expression (a 1.5-fold increase) in HCT-116, as compared with control cells. FITC-MFI was 1936 in HCT-116-treated cells, as compared to being 4551 in cisplatin and 1297 in untreated cells. AgNPs (6.26 µg/mL and 62.5 µg/mL) induced the cellular migration (40.2% and 33.23%, respectively) of V79 Chinese hamster lung fibroblasts; however, the improvement in wound healing was not significant as it was for the controls. AgNPs (MIC of 10 µg/mL) were very effective against MDR Enterococcus faecalis in the planktonic mode as well as in the biofilm mode. AgNPs (10 µg/mL and 320 µg/mL) reduced the E. faecalis biofilm by >50% and >80%, respectively. Natural products, such as Syzygium aromaticum (clove) oil (MIC of 312.5 µg/mL) and eugenol (MIC of 625 µg/mL), showed significant antimicrobial effects against A. indica. Our findings indicate that A. indica-functionalized AgNPs are effective against cancer cells and can induce apoptosis in HCT-116 colon carcinoma cells; however, the anticancer properties of AgNPs can also be upgraded through active targeting (functionalized with enzymes, antibiotics, photosensitizers, or antibodies) in immunotherapy, photothermal therapy, and photodynamic therapy. Our findings also suggest that functionalized AgNPs could be pivotal in the development of a novel, non-cytotoxic, biocompatible therapeutic agent for infected chronic wounds, ulcers, and skin lesions involving MDR pathogens via their incorporation into scaffolds, composites, patches, microgels, or formulations for microneedles, dressings, bandages, gels, or other drug-delivery systems.
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Alves PJ, Gryson L, Hajjar J, Lepelletier D, Reners M, Rodríguez Salazar J, Simon A. Role of antiseptics in the prevention and treatment of infections in nursing homes. J Hosp Infect 2023; 131:58-69. [PMID: 36216172 DOI: 10.1016/j.jhin.2022.09.021] [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: 06/09/2022] [Revised: 09/16/2022] [Accepted: 09/26/2022] [Indexed: 11/07/2022]
Abstract
Inadequate infection control, wound care, and oral hygiene protocols in nursing homes pose challenges to residents' quality of life. Based on the outcomes from a focus group meeting and a literature search, this narrative review evaluates the current and potential roles of antiseptics within nursing home infection management procedures. We examine contemporary strategies and concerns within the management of meticillin-resistant Staphylococcus aureus (MRSA; including decolonization regimes), chronic wound care, and oral hygiene, and review the available data for the use of antiseptics, with a focus on povidone-iodine. Compared with chlorhexidine, polyhexanide, and silver, povidone-iodine has a broader spectrum of antimicrobial activity, with rapid and potent activity against MRSA and other microbes found in chronic wounds, including biofilms. As no reports of bacterial resistance or cross-resistance following exposure to povidone-iodine exist, it may be preferable for MRSA decolonization compared with mupirocin and chlorhexidine, which can lead to resistant MRSA strains. Povidone-iodine oral products have greater efficacy against oral pathogens compared with other antiseptics such as chlorhexidine mouthwash, highlighting the clinical benefit of povidone-iodine in oral care. Additionally, povidone-iodine-based products, including mouthwash, have demonstrated rapid in-vitro virucidal activity against SARS-CoV-2 and may help reduce its transmission if incorporated into nursing home coronavirus 2019 control protocols. Importantly, povidone-iodine activity is not adversely affected by organic material, such as that found in chronic wounds and the oral cavity. Povidone-iodine is a promising antiseptic agent for the management of infections in the nursing home setting, including MRSA decolonization procedures, chronic wound management, and oral care.
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Affiliation(s)
- P J Alves
- Wounds Research Laboratory, Centre for Interdisciplinary Research in Health (CIIS), Universidade Católica Portuguesa, Portugal.
| | - L Gryson
- Belgian Defence Medical Component, Brussels, Belgium
| | - J Hajjar
- Infection Control Practitioner, Consultant, Pau, France
| | - D Lepelletier
- Hospital Hygiene Department, Nantes University Hospital, Nantes, France
| | - M Reners
- Private Dental Practice, Liège, Belgium
| | | | - A Simon
- Infection Control Team, Groupe Hospitalier Jolimont, Haine Saint-Paul, Belgium
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12
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Liu Y, Zhuang B, Yuan B, Zhang H, Li J, Wang W, Li R, Du L, Ding P, Jin Y. Predatory bacterial hydrogels for topical treatment of infected wounds. Acta Pharm Sin B 2023; 13:315-326. [PMID: 36815028 PMCID: PMC9939299 DOI: 10.1016/j.apsb.2022.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/22/2022] [Accepted: 04/28/2022] [Indexed: 12/11/2022] Open
Abstract
Wound infection is becoming a considerable healthcare crisis due to the abuse of antibiotics and the substantial production of multidrug-resistant bacteria. Seawater immersion wounds usually become a mortal trouble because of the infection of Vibrio vulnificus. Bdellovibrio bacteriovorus, one kind of natural predatory bacteria, is recognized as a promising biological therapy against intractable bacteria. Here, we prepared a B. bacteriovorus-loaded polyvinyl alcohol/alginate hydrogel for the topical treatment of the seawater immersion wounds infected by V. vulnificus. The B. bacteriovorus-loaded hydrogel (BG) owned highly microporous structures with the mean pore size of 90 μm, improving the rapid release of B. bacteriovorus from BG when contacting the aqueous surroundings. BG showed high biosafety with no L929 cell toxicity or hemolysis. More importantly, BG exhibited excellent in vitro anti-V. vulnificus effect. The highly effective infected wound treatment effect of BG was evaluated on mouse models, revealing significant reduction of local V. vulnificus, accelerated wound contraction, and alleviated inflammation. Besides the high bacterial inhibition of BG, BG remarkably reduced inflammatory response, promoted collagen deposition, neovascularization and re-epithelization, contributing to wound healing. BG is a promising topical biological formulation against infected wounds.
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Affiliation(s)
- Yan Liu
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China,Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Bo Zhuang
- Department of Chemical Defense, Institute of NBC Defense, Beijing 102205, China
| | - Bochuan Yuan
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Hui Zhang
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Jingfei Li
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Wanmei Wang
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Ruiteng Li
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Lina Du
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Pingtian Ding
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yiguang Jin
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China,Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China,Corresponding author. Tel.: +86 10 88215159.
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13
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Stynes G, Haertsch P, O'Hara J, Knight R, Issler-Fisher AC, Maitz PKM. Alginate dressings continuously for fourteen days on uncontaminated, superficial, partial thickness burns. J Burn Care Res 2022:6743261. [PMID: 36181757 DOI: 10.1093/jbcr/irac143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Indexed: 01/27/2023]
Abstract
Calcium alginate dressings are commonly used on split-thickness skin donor sites, where they are typically removed after 14 days. Alginates have been used previously on superficial, partial thickness burns, but changed every 3-4 days. In this study, alginates were applied to superficial, partial thickness burns on adults within 36 hours of injury, then left intact for up to 14 days. Wound healing (≥95% wound epithelialisation) and pain were measured. Twenty-one burns were reviewed on ten patients. Per the initial protocol, six patients were reviewed every 3-5 days, with removal of only secondary dressings, until day 13-14, when the alginate dressings were removed. One patient was reviewed every 3-5 days until day 10, when a clinic nurse removed the alginate dressing. Restrictions on movement during the COVID pandemic necessitated a protocol change, with only one review at approximately day 14 for removal of alginate and secondary dressings; three patients were reviewed in this manner. Burns on all patients were 100% epithelialised at the time of final review and there were no complications, such as scarring, infection, or need for grafting. Following initial debridement and dressings, patients reported minimal pain. Dressing costs appeared to be significantly decreased. This protocol may be particularly useful for patients managed in rural and remote locations, with telemedicine support if required.
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Affiliation(s)
- Gil Stynes
- Burns Unit, Concord Repatriation General Hospital, Hospital Rd, Concord NSW 2139, Australia.,University of Sydney, Camperdown, NSW.,ANZAC Research Institute, Concord Repatriation General Hospital, Sydney, Australia.,Department of Surgery, Wollongong Hospital, 252 Loftus St, Wollongong 2500, NSW, Australia
| | - Peter Haertsch
- Burns Unit, Concord Repatriation General Hospital, Hospital Rd, Concord NSW 2139, Australia.,University of Sydney, Camperdown, NSW.,Department of Surgery, Wollongong Hospital, 252 Loftus St, Wollongong 2500, NSW, Australia
| | - Justine O'Hara
- Burns Unit, Concord Repatriation General Hospital, Hospital Rd, Concord NSW 2139, Australia.,University of Sydney, Camperdown, NSW
| | - Robert Knight
- Department of Surgery, Wollongong Hospital, 252 Loftus St, Wollongong 2500, NSW, Australia
| | - Andrea C Issler-Fisher
- Burns Unit, Concord Repatriation General Hospital, Hospital Rd, Concord NSW 2139, Australia.,University of Sydney, Camperdown, NSW.,ANZAC Research Institute, Concord Repatriation General Hospital, Sydney, Australia
| | - Peter K M Maitz
- Burns Unit, Concord Repatriation General Hospital, Hospital Rd, Concord NSW 2139, Australia.,University of Sydney, Camperdown, NSW.,ANZAC Research Institute, Concord Repatriation General Hospital, Sydney, Australia
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Calabrese EJ, Dhawan G, Kapoor R, Agathokleous E, Calabrese V. Hormesis: Wound healing and keratinocytes. Pharmacol Res 2022; 183:106393. [PMID: 35961478 DOI: 10.1016/j.phrs.2022.106393] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/03/2022] [Accepted: 08/08/2022] [Indexed: 12/18/2022]
Abstract
Hormetic dose responses (i.e., a biphasic dose/concentration response characterized by a low dose stimulation and a high dose inhibition) are shown herein to be commonly reported in the dermal wound healing process, with the particular focus on cell viability, proliferation, and migration of human keratinocytes in in vitro studies. Hormetic responses are induced by a wide range of substances, including endogenous agents, numerous drug and nanoparticle preparations and especially plant derived extracts, including many well-known dietary supplements as well as physical stressor agents, such as low-level laser treatments. Detailed mechanistic studies have identified common signaling pathways and their cross-pathway communications that mediate the hormetic dose responses. These findings suggest that the concept of hormesis plays a fundamental role in wound healing, with important potential implications for agent screening and evaluation, as well as clinical strategies.
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Affiliation(s)
- Edward J Calabrese
- Professor of Toxicology; School of Public Health and Health Sciences, Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003 USA.
| | - Gaurav Dhawan
- Sri Guru Ram Das (SGRD); University of Health Sciences, Amritsar, India.
| | - Rachna Kapoor
- Saint Francis Hospital and Medical Center; Hartford, CT, USA.
| | - Evgenios Agathokleous
- School of Applied Meteorology; Nanjing University of Information Science & Technology; Nanjing 210044, China.
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, School of Medicine University of Catania, Via Santa Sofia 97, Catania 95123, Italy.
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Fan C, Xu Q, Hao R, Wang C, Que Y, Chen Y, Yang C, Chang J. Multi-functional wound dressings based on silicate bioactive materials. Biomaterials 2022; 287:121652. [PMID: 35785753 DOI: 10.1016/j.biomaterials.2022.121652] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 11/22/2022]
Abstract
Most traditional wound dressings passively offer a protective barrier for the wounds, which lacks the initiative in stimulating tissue regeneration. In addition, cutaneous wound healing is usually accompanied by various complicated conditions, including bacterial infection, skin cancer, and damaged skin appendages, bringing further challenges for wound management in clinic. Therefore, an ideal wound dressing should not only actively stimulate wound healing but also hold multi-functions for solving problems associated with different specific wound conditions. Recent studies have demonstrated that silicate bioceramics and bioglasses are one type of promising materials for the development of wound dressings, as they can actively accelerate wound healing by regulating endothelial cells, dermal fibroblasts, macrophages, and epidermal cells. In particular, silicate-based biomaterials can be further functionalized by specific structural design or doping with functional components, which endow materials with enhanced bioactivities or expanded physicochemical properties such as photothermal, photodynamic, chemodynamic, or imaging properties. The functionalized materials can be used to address wound healing with different demands including but not limited to antibacterial, anticancer, skin appendages regeneration, and wound monitoring. In this review, we summarized the current research on the development of silicate-based multi-functional wound dressings and prospected the development of advanced wound dressings in the future.
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Affiliation(s)
- Chen Fan
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Qing Xu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, PR China
| | - Ruiqi Hao
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Chun Wang
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Yumei Que
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Yanxin Chen
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Chen Yang
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China.
| | - Jiang Chang
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China; State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, PR China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, PR China.
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16
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Husmark J, Morgner B, Susilo YB, Wiegand C. Antimicrobial effects of bacterial binding to a dialkylcarbamoyl chloride-coated wound dressing: an in vitro study. J Wound Care 2022; 31:560-570. [PMID: 35797260 DOI: 10.12968/jowc.2022.31.7.560] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Wound dressings that inactivate or sequestrate microorganisms, such as those with a hydrophobic, bacteria-binding dialkylcarbamoyl chloride (DACC) surface, can reduce the risk of clinical infections. This 'passive' bioburden control, avoiding bacterial cell wall disruption with associated release of bacterial endotoxins aggravating inflammation, is advantageous in hard-to-heal wounds. Hence, the full scope of DACC dressings, including the potential impact of higher inoculum densities, increased protein load and different pH on antibacterial activity, needs to be evaluated. METHOD The Japanese Industrial Standard (JIS) L 1902 challenge test was used to evaluate the antimicrobial activity of the DACC-coated dressing against several World Health Organization (WHO)-prioritised wound pathogens (e.g., meticillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus, microorganisms with extended-spectrum beta-lactamases and Acinetobacter baumannii), the effect of repeated bacterial challenge in an adverse wound environment, and antimicrobial performance at wound-related pH. RESULTS High antibacterial activity of the DACC-coated dressing against the WHO-prioritised bacteria strains by its irreversible binding and inhibition of growth of bound bacteria was confirmed using JIS L 1902. At increased inoculation densities, compared to standard conditions, the DACC-coated dressing still achieved strong-to-significant antibacterial effects. Augmenting the media protein content also affected antibacterial performance; a 0.5-1 log reduction in antibacterial activity was observed upon addition of 10% fetal calf serum. The pH did not influence antibacterial performance. The DACC-coated dressing also sustained antibacterial activity over subsequent reinfection steps. CONCLUSION It can be assumed that the DACC-coated dressing exerts beneficial effects in controlling the wound bioburden, reducing the overall demand placed on antibiotics, without using antimicrobial substances.
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Affiliation(s)
| | - Bianka Morgner
- Department of Dermatology, University Hospital Jena, Erfurter Straße 35, D-07740 Jena, Germany
| | | | - Cornelia Wiegand
- Department of Dermatology, University Hospital Jena, Erfurter Straße 35, D-07740 Jena, Germany
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Wide Spectrum Potent Antimicrobial Efficacy of Wound Dressings Impregnated with Cuprous Oxide Microparticles. MICROBIOLOGY RESEARCH 2022. [DOI: 10.3390/microbiolres13030029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Copper has intrinsic antimicrobial properties. Wound dressings impregnated with cuprous oxide microparticles (hereafter termed COD) have been cleared for the management of acute and chronic wounds by the FDA and other regulatory bodies. The COD reduced the viable microbial titers of a wide spectrum of microbes by more than 10,000-fold (4-logs) within 3 h of exposure at 37 °C (p < 0.001). Similar microbial titer reductions were achieved by 3-year naturally aged COD dressings, showing the stability of the biocidal efficacy over time. The potent biocidal efficacy of the COD was maintained even after 7 daily consecutive inoculations of the dressings with ~106 CFU. COD with an adhesive contour blocked the passage of bacteria from the exterior environment to the wound bed side of the dressing even after 7 daily consecutive inoculations of different bacteria on the outer surface of the dressings. Taken together, the study demonstrates the wide spectrum potent in vitro biocidal efficacy of the cuprous oxide impregnated dressings against a wide panel of microorganisms.
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Sorouri F, Azimzadeh Asiabi P, Hosseini P, Ramazani A, Kiani S, Akbari T, Sharifzadeh M, Shakoori M, Foroumadi A, Firoozpour L, Amin M, Khoobi M. Enrichment of carbopol gel by natural peptide and clay for improving the burn wound repair process. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04306-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tie-Over Bolster Pressure Dressing Improves Outcomes of Skin Substitutes Xenografts on Athymic Mice. Int J Mol Sci 2022; 23:ijms23105507. [PMID: 35628318 PMCID: PMC9141235 DOI: 10.3390/ijms23105507] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/20/2022] [Accepted: 05/09/2022] [Indexed: 12/10/2022] Open
Abstract
The efficacy of skin substitutes is established for the treatment of burn injuries, but its use is not limited to this condition. This technology has the potential to improve the treatment of various conditions by offering highly advanced and personalized treatments. In vivo studies are challenging but essential to move to clinical use in humans. Mice are the most widely used species in preclinical studies, but the main drawback of this model is the limited surface area of the graft in long-term transplantation studies caused by the displacement and the contraction of the graft. We improved the conventional surgical procedures by stabilizing the chamber covering the graft with intramuscular sutures and by adding a tie-over bolster dressing. The current study was therefore performed to compare outcomes of skin grafts between the conventional and optimized skin graft model. Human self-assembled skin substitutes (SASSs) were prepared and grafted to athymic mice either by the conventional method or by the new grafting method. Graft healing and complications were assessed using digital photographs on postoperative days 7, 14, and 21. Similar structure and organization were observed by histological staining. The new grafting method reduced medium and large displacement events by 1.26-fold and medium and large contraction events by 1.8-fold, leading to a 1.6-fold increase in graft surface area compared to skin substitutes grafted with the usual method. This innovation ensures better reproducibility and consistency of skin substitute transplants on mice.
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20
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Wang J, Liu S, Shen W. Absorption and Resonance Rayleigh Scattering Spectra of Ag(I) and Erythrosin System and Their Analytical Application in Food Safety. Front Nutr 2022; 9:900215. [PMID: 35614984 PMCID: PMC9125220 DOI: 10.3389/fnut.2022.900215] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 04/04/2022] [Indexed: 01/12/2023] Open
Abstract
In pH 4.4∼4.6 weakly acidic media, erythrosine (Ery) can react with Ag(I) to form hydrophobic ion-association complex, which can further aggregate to form nanoparticles with an average particle size of about 45 nm under the action of water phase extrusion and van der Waals force. As a result, it could lead to a decrease of absorbance, a significant enhancement of resonance Rayleigh scattering (RRS) and the appearance of a new emission spectrum. Based on these Phenomena, two new methods (spectrophotometry and RRS) were established for the determination of trace Ag(I). The detection limits for Ag(I) by spectrophotometry and RRS are 9.74 and 0.12 ng/ml, respectively. In this paper, we have investigated the formation of nanoparticles, the optimum reaction conditions, the influence factors, explored the reason for enhancement of the scattering intensity and the effect of coexisting substance. This research shows that RRS method not only has good selectivity and high sensitivity, but also is simple and rapid. Analyzing of actual samples and standard samples, the determination result of this method is consistent with that of standard methods (Flame atomic absorption spectroscopy). Thus the method had potential feasibility to analysis for Ag(I) in the environmental water samples, pharmaceutical, and food industries.
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Affiliation(s)
- Jian Wang
- School of Elementary Education, Chongqing Normal University, Chongqing, China
| | - Shaopu Liu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
| | - Wei Shen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
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Majeed M, Hakeem KR, Rehman RU. Synergistic effect of plant extract coupled silver nanoparticles in various therapeutic applications- present insights and bottlenecks. CHEMOSPHERE 2022; 288:132527. [PMID: 34637861 DOI: 10.1016/j.chemosphere.2021.132527] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/07/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
The phytocomponent conjugated silver nanoparticles (AgNPs) have been extensively explored for various therapeutic applications such as antimicrobial, antioxidant, anticancer, anti-inflammatory, antidiabetic and anticoagulant effects. The bio-conjugation of Ag-based nanomaterial with plant extracts reduces their toxicity to biological systems and enhances their therapeutic effectiveness. The diversity of phytochemicals or capping agents provided by the plant extracts and the small size and large surface area of AgNPs permits maximum adsorption of these capping agents onto their surfaces that further promote the therapeutic performance of phytoconjugated AgNPs in various biomedical applications. The mechanistic action involved in antimicrobial and anticancer functions of AgNPs is mainly dependent on the induction of reactive oxygen species (ROS) resulting in cellular apoptosis and necrosis. This review summarizes the recent studies of various plant extract assisted synthesis of AgNPs, potential biomedical applications with the possible mechanism of action and major shortcomings affecting their therapeutic efficacy.
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Affiliation(s)
- Mahak Majeed
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190005, India
| | - Khalid Rehman Hakeem
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia; Princess Dr Najla Bint Saud Al- Saud Center for Excellence Research in Biotechnology, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Reiaz Ul Rehman
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190005, India.
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22
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Mirmohammadsadegh N, Shakoori M, Moghaddam HN, Farhadi R, Shahverdi AR, Amin M. Wound healing and anti-inflammatory effects of bacterial cellulose coated with Pistacia atlantica fruit oil. Daru 2021; 30:1-10. [PMID: 34791616 DOI: 10.1007/s40199-021-00405-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/20/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Biological activities of Pistacia atlantica have been investigated for few decades. The fruit oil of the plant has been used for treatment of wounds, inflammation, and other ailments in Traditional Persian Medicine (TPM). OBJECTIVES The main objectives of this study were to analyze the chemical composition of Pistacia atlantica fruit oil and to study wound healing and anti-inflammatory effects of oil-absorbed bacterial cellulose in an in vivo burn wound model. METHOD Bacterial cellulose membrane was prepared from Kombucha culture and Fourier-transform infrared was used to characterize the bacterial cellulose. Cold press technique was used to obtain Pistacia atlantica fruit oil and the chemical composition was analyzed by gas chromatography. Bacterial cellulose membrane was impregnated with the Pistacia atlantica fruit oil. Pistacia atlantica hydrogel was prepared using specific Carbopol. Burn wound model was used to evaluate in vivo wound healing and anti-inflammatory effects of the wound dressings containing either silver sulfadiazine as positive control, Pistacia atlantica hydrogel or bacterial cellulose membrane coated with the Pistacia atlantica fruit oil. Blank dressing was used as negative control. RESULTS FT-IR analysis showed that the structure of the bacterial cellulose corresponded with the standard FT-IR spectrum. The major components of Pistacia atlantica fruit oil constituted linoleic acid (38.1%), oleic acid (36.9%) and stearic acid (3.8%). Histological analysis showed that bacterial cellulose coated with fruit oil significantly decreased the number of neutrophils as a measure of inflammation compared to either negative control or positive control (p < 0.05). Wound closure occurred faster in the treated group with fruit oil-coated bacterial cellulose compared to the other treatments (p < 0.05). CONCLUSION The results showed that bacterial cellulose coated with Pistacia atlantica fruit oil can be a potential bio-safe dressing for wound management.
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Affiliation(s)
- Navid Mirmohammadsadegh
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Marzieh Shakoori
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Hanieh Nobari Moghaddam
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Ramtin Farhadi
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Ahmad Reza Shahverdi
- Department of Pharmaceutical Biotechnology, and Biotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohsen Amin
- Department of Drug and Food Control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran. .,Pharmaceutical Quality Assurance Research Center, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Room No. 1-221, Faculty of Pharmacy, 16th Azar Street, Tehran, Iran.
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23
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Workman CD, Hopkins S, Pant J, Goudie M, Handa H. Covalently Bound S-Nitroso- N-Acetylpenicillamine to Electrospun Polyacrylonitrile Nanofibers for Multifunctional Tissue Engineering Applications. ACS Biomater Sci Eng 2021; 7:5279-5287. [PMID: 34695358 DOI: 10.1021/acsbiomaterials.1c00907] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Attachment of a nitric oxide (NO) donor to an electrospun polymer has the potential to improve its proliferative and antimicrobial capabilities. This study presents the novel, covalent attachment of S-nitroso-N-acetylpenicillamine (SNAP) to polyacrylonitrile (PAN) fibers. By attaching the NO donor to the polymer, rather than blending it, leaching is reduced to maintain a NO flux within the physiologically relevant range for a longer duration, while limiting any cytotoxic effects. The synthesized fibers were characterized using a variety of techniques such as scanning electron microscopy, 1H NMR, and drop shape analysis. Due to the antimicrobial activity of NO, the SNAP-PAN fibers demonstrated a 2-log reduction of S. aureus adhesion. Furthermore, the extended zone of inhibition of S. aureus by SNAP-PAN demonstrates the ability of NO to impact the environment surrounding the material, in addition to the environment in direct contact with it. The combination of NO release, hydrophilicity of PAN, and the fibrous network led to increased fibroblast proliferation and attachment, potentially expanding the fibers as an improved cell scaffolding platform. The results from this study demonstrate a novel preparation and design of NO-releasing fibers to provide multiple benefits for a variety of biomedical applications.
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Affiliation(s)
- Christina D Workman
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, 220 Riverbend Road, Athens, Georgia 30602, United States
| | - Sean Hopkins
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, 220 Riverbend Road, Athens, Georgia 30602, United States
| | - Jitendra Pant
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, 220 Riverbend Road, Athens, Georgia 30602, United States
| | - Marcus Goudie
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, 220 Riverbend Road, Athens, Georgia 30602, United States
| | - Hitesh Handa
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, 220 Riverbend Road, Athens, Georgia 30602, United States.,Pharmaceutical and Biomedical Sciences Department, College of Pharmacy, University of Georgia, 220 Riverbend Road, Athens, Georgia 30602, United States
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24
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Kędzierska M, Blilid S, Miłowska K, Kołodziejczyk-Czepas J, Katir N, Lahcini M, El Kadib A, Bryszewska M. Insight into Factors Influencing Wound Healing Using Phosphorylated Cellulose-Filled-Chitosan Nanocomposite Films. Int J Mol Sci 2021; 22:11386. [PMID: 34768816 PMCID: PMC8583768 DOI: 10.3390/ijms222111386] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/15/2021] [Accepted: 10/18/2021] [Indexed: 12/23/2022] Open
Abstract
Marine polysaccharides are believed to be promising wound-dressing nanomaterials because of their biocompatibility, antibacterial and hemostatic activity, and ability to easily shape into transparent films, hydrogels, and porous foams that can provide a moist micro-environment and adsorb exudates. Current efforts are firmly focused on the preparation of novel polysaccharide-derived nanomaterials functionalized with chemical objects to meet the mechanical and biological requirements of ideal wound healing systems. In this contribution, we investigated the characteristics of six different cellulose-filled chitosan transparent films as potential factors that could help to accelerate wound healing. Both microcrystalline and nano-sized cellulose, as well as native and phosphorylated cellulose, were used as fillers to simultaneously elucidate the roles of size and functionalization. The assessment of their influences on hemostatic properties indicated that the tested nanocomposites shorten clotting times by affecting both the extrinsic and intrinsic pathways of the blood coagulation system. We also showed that all biocomposites have antioxidant capacity. Moreover, the cytotoxicity and genotoxicity of the materials against two cell lines, human BJ fibroblasts and human KERTr keratinocytes, was investigated. The nature of the cellulose used as a filler was found to influence their cytotoxicity at a relatively low level. Potential mechanisms of cytotoxicity were also investigated; only one (phosphorylated microcellulose-filled chitosan films) of the compounds tested produced reactive oxygen species (ROS) to a small extent, and some films reduced the level of ROS, probably due to their antioxidant properties. The transmembrane mitochondrial potential was very slightly lowered. These biocompatible films showed no genotoxicity, and very importantly for wound healing, most of them significantly accelerated migration of both fibroblasts and keratinocytes.
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Affiliation(s)
- Marta Kędzierska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland; (K.M.); (M.B.)
| | - Sara Blilid
- Euromed Research Center, Engineering Division, Euro-Med University of Fes (UEMF), Fès 30070, Morocco; (S.B.); (N.K.); (A.E.K.)
- Laboratory of Organometallic and Macromolecular Chemistry-Composites Materials, Faculty of Sciences and Technologies, Cadi Ayyad University, Marrakech 40000, Morocco;
| | - Katarzyna Miłowska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland; (K.M.); (M.B.)
| | - Joanna Kołodziejczyk-Czepas
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
| | - Nadia Katir
- Euromed Research Center, Engineering Division, Euro-Med University of Fes (UEMF), Fès 30070, Morocco; (S.B.); (N.K.); (A.E.K.)
| | - Mohammed Lahcini
- Laboratory of Organometallic and Macromolecular Chemistry-Composites Materials, Faculty of Sciences and Technologies, Cadi Ayyad University, Marrakech 40000, Morocco;
| | - Abdelkrim El Kadib
- Euromed Research Center, Engineering Division, Euro-Med University of Fes (UEMF), Fès 30070, Morocco; (S.B.); (N.K.); (A.E.K.)
| | - Maria Bryszewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland; (K.M.); (M.B.)
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25
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De Canha MN, Thipe VC, Katti KV, Mandiwana V, Kalombo ML, Ray SS, Rikhotso R, Janse van Vuuren A, Lall N. The Activity of Gold Nanoparticles Synthesized Using Helichrysum odoratissimum Against Cutibacterium acnes Biofilms. Front Cell Dev Biol 2021; 9:675064. [PMID: 34589479 PMCID: PMC8473823 DOI: 10.3389/fcell.2021.675064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 07/29/2021] [Indexed: 12/03/2022] Open
Abstract
The human skin is home to millions of bacteria, fungi, and viruses which form part of a unique microbiome. Commensal microbes, including Cutibacterium acnes can occasionally become opportunistic resulting in the onset of dermatological diseases such as acne. Acne is defined as a chronic inflammatory disorder based on its ability to persist for long periods throughout an individual’s life. The synthesis of gold nanoparticles (AuNPs) was performed using the bottom-up approach by reduction of a gold salt (HAuCl4.3H2O) by the methanol extract (HO-MeOH) and aqueous decoction prepared from the dried aerial parts of Helichrysum odoratissimum (HO-Powder). The HO-MeOH and HO-Powder AuNPs were prepared as unstabilised (−GA) or stabilized (+GA) by the omission or addition of Gum Arabic (GA) as the capping agent. The characterization of the AuNPs was performed using Transmission Electron Microscopy (TEM), dynamic light scattering (DLS), Ultraviolet-Visual spectroscopy (UV-Vis), Thermogravimetric Analysis (TGA), X-Ray Diffraction (XRD) and Zeta-potential. The MBIC50 values for HO-MeOH − GA and HO-MeOH + GA were 1.79 ± 0.78% v/v and 0.22 ± 0.16% v/v, respectively. The HO-Powder AuNPs showed potent inhibition of C. acnes cell adhesion to the 96-well plates. The HO-MeOH − GA and HO-Powder + GA exhibited IC50 of 22.01 ± 6.13% v/v and 11.78 ± 1.78% v/v, respectively. The activity of the AuNPs validated the anti-adhesion activity of the methanol extract in the crude form. The study emphasizes the selectivity of H. odoratissimum AuNPs for the prevention of C. acnes cell adhesion and not antimicrobial activity, which may prevent the emergence of resistant strains of C. acnes through reduced bactericidal or bacteriostatic activity, while targeting mechanisms of pathogenesis.
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Affiliation(s)
- Marco Nuno De Canha
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
| | - Velaphi Clement Thipe
- Department of Radiology, Institute of Green Nanotechnology, University of Missouri Columbia, Columbia, MO, United States
| | - Kattesh V Katti
- Department of Radiology, Institute of Green Nanotechnology, University of Missouri Columbia, Columbia, MO, United States
| | - Vusani Mandiwana
- Chemical Cluster, Centre for Nanostructures and Advanced Materials, Council for Scientific and Industrial Research, Pretoria, South Africa
| | - Michel Lonji Kalombo
- Chemical Cluster, Centre for Nanostructures and Advanced Materials, Council for Scientific and Industrial Research, Pretoria, South Africa
| | - Suprakas Sinha Ray
- DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria, South Africa
| | - Rirhandzu Rikhotso
- DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria, South Africa
| | - Arno Janse van Vuuren
- Centre for High Resolution Transmission Electron Microscopy, Nelson Mandela University, Port Elizabeth, South Africa
| | - Namrita Lall
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa.,School of Natural Resources, University of Missouri, Columbia, MO, United States.,College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, India
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26
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Tanideh N, Keshavarzi F, Hemat Zadeh A, Daneshi S, Koohi-Hosseinabadi O, Mokhtari M, Sedighi A, Asadi-Yousefabad SL. Healing Effects of Human Amniotic Membrane and Burned Wool on the Second-degree Burn in Rats. Galen Med J 2021; 9:e1759. [PMID: 34466588 PMCID: PMC8343904 DOI: 10.31661/gmj.v9i0.1759] [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: 11/12/2019] [Revised: 02/03/2020] [Accepted: 02/26/2020] [Indexed: 11/17/2022] Open
Abstract
Background: This study aimed to compare sheep burnt wool and human amniotic membrane (AM) on second-degree burn wound healing in rats. Materials and Methods: Seventy-two adult male rats of Sprague Dawley underwent general anesthesia, and a deep second-degree burn was created on their skin by a hot iron plate. Afterward, human AM, silver sulfadiazine ointment (SSD), and sheep burned wool were used on wound area for burn treatment. On days 7, 14, and 21 of the experiment, the rats were sacrificed, and histopathological assessments were done. Results: Human AM, in comparison with other groups, significantly (P<0.05) showed better improvement in all pathologic variables. Burned wool showed significant improvement compared to the control group on day 7 in the angiogenesis, on day 14 in granulation tissue formation and epithelial formation, and on day 21 in new epithelial formation (P<0.05). Burned wool compared with SSD ointment in granulation tissue formation improved significantly (P<0.05) on days 7 and 14. Also, SSD ointment in comparison with the control group significantly improved (P<0.05) granulation tissue formation and macrophage on day 7. Conclusion: Human AM has a significant effect on the treatment of second-degree burn. Burned wool has a better effect on wound healing than SSD ointment and negative control group without treatment in terms of granulation tissue and epithelium formation.
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Affiliation(s)
- Nader Tanideh
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Pharmacology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farideh Keshavarzi
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Sajad Daneshi
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Maral Mokhtari
- Department of Pathology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Anahita Sedighi
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyedeh-Leili Asadi-Yousefabad
- Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Correspondence to: Seyedeh-Leili Asadi-Yousefabad, Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Telephone Number: +989171463825 Email Address:
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27
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Karimi H, Latifi NA, Mehrjerdi AZ, Jafarnejad B, Karimi AM. Histopathological Changes of Organs (Lungs, Liver, Kidney, and Brain) After Using Two Types of AgiCoat and Acticoat Nanosilver Dressings on Deep Second-Degree Burn in Rat. J Burn Care Res 2021; 41:141-150. [PMID: 31400763 DOI: 10.1093/jbcr/irz137] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Prevention of infections is a very important issue in treating the burn wounds. The nanosilver dressings have many promising advantages, but absorption of silver ions and its adverse effects to the body were always a question. The aim of this study was to compare Silver serum levels and acute toxic effects of nanosilver on histopathology of organs (lungs, liver, kidney, spleen, and brain) in two types of AgiCoat and Acticoat (nanosilver) dressings on second-degree deep burn in rat. This is an experimental study conducted in our animal laboratory. We divided 24 Sprague-Dawley male rats weighing 300 to 350 randomly into two groups. After anesthesia, a second deep-degree burn was made over dorsal skins of rats by standard method. For group A, Agicoat and, for group B, Acticoat dressings were used. The dressings were changed every 3 days with AgiCoat and Acticoat, respectively. After 14 days, we got blood samples and tissue samples taken from heart, liver, kidneys, spleen, lungs, and brain and a sample from dorsal skin of the rat for histopathological examinations. The results showed that the levels of serum silver in both groups were significantly higher than the standard level (1.22 part per million (PM); AgiCoat, P = .017; Acticoat, P = .000), but there was no significant difference between the groups (P = .551). Examination of the relationship between the level of serum silver and histopathological changes in liver showed that hepatotoxicity of AgiCoat was higher compared with Acticoat and the difference was significant (P = .002). There were no pathological changes in brain, kidneys, spleen, heart, and lungs. Wound healing was faster in Acticoat group. The nanosilver dressings can cause toxicity in liver but not in kidney, brain, spleen, heart, and lungs. Liver pathology and hepatotoxicity were more prominent in AgiCoat group. Wound healing was faster in Acticoat group.
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Affiliation(s)
- Hamid Karimi
- Hazrat Fatemeh Hospital, School of Medicine, Burn Research Center, Iran University of Medical Sciences
| | - Noor-Ahmad Latifi
- Hazrat Fatemeh Hospital, School of Medicine, Burn Research Center, Iran University of Medical Sciences
| | - Ali Zare Mehrjerdi
- Pathology Department, School of medicine, Iran University of Medical Sciences
| | - Babak Jafarnejad
- Plastic surgery Department, School of medicine, Hazrat Fatemeh Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Ali-Mohammad Karimi
- Pathology Department, School of medicine, Iran University of Medical Sciences
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28
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In Vitro Microbiological and Drug Release of Silver/Ibuprofen Loaded Wound Dressing Designed for the Treatment of Chronically Infected Painful Wounds. Antibiotics (Basel) 2021; 10:antibiotics10070805. [PMID: 34356725 PMCID: PMC8300664 DOI: 10.3390/antibiotics10070805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/24/2021] [Accepted: 06/29/2021] [Indexed: 11/17/2022] Open
Abstract
This study consisted of developing a dressing loaded with silver (Ag) and ibuprofen (IBU) that provides a dual therapy, antibacterial and antalgic, intended for infected painful wounds. Therefore, non-woven polyethyleneterephtalate (PET) textiles nonwovens were pre-treated by cyclodextrin crosslinked with citric acid by a pad/dry/cure process. Then, textiles were impregnated in silver solution followed by a thermal treatment and were then coated by Layer-by-Layer (L-b-L) deposition of a polyelectrolyte multilayer (PEM) system consisting of anionic water-soluble poly(betacyclodextrin citrate) (PCD) and cationic chitosan. Finally, ibuprofen lysinate (IBU-L) was loaded on the PEM coating. We demonstrated the complexation of IBU with native βCD and PCD by phase solubility diagram and 1H NMR. PEM system allowed complete IBU-L release in 6 h in PBS pH 7.4 batch (USP IV). On the other hand, microbiological tests demonstrated that loaded silver induced bacterial reduction of 4 Log10 against S. aureus and E. coli and tests revealed that ibuprofen lysinate loading did not interfere with the antibacterial properties of the dressing.
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29
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Alves PJ, Barreto RT, Barrois BM, Gryson LG, Meaume S, Monstrey SJ. Update on the role of antiseptics in the management of chronic wounds with critical colonisation and/or biofilm. Int Wound J 2021; 18:342-358. [PMID: 33314723 PMCID: PMC8244012 DOI: 10.1111/iwj.13537] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/04/2020] [Accepted: 11/07/2020] [Indexed: 12/22/2022] Open
Abstract
Biofilms play a major role in delaying chronic wounds from healing. A wound infiltrated with biofilm, or "critically colonised" wound, may become clinically infected if the number of microbes exceeds a critical level. Chronic wound biofilms represent a significant treatment challenge by demonstrating recalcitrance towards antimicrobial agents. However, a "window of opportunity" may exist after wound debridement when biofilms are more susceptible to topical antiseptics. Here, we discuss the role of antiseptics in the management of chronic wounds and biofilm, focusing on povidone-iodine (PVP-I) in comparison with two commonly used antiseptics: polyhexanide (PHMB) and silver. This article is based on the literature reviewed during a focus group meeting on antiseptics in wound care and biofilm management, and on a PubMed search conducted in March 2020. Compared with PHMB and silver, PVP-I has a broader spectrum of antimicrobial activity, potent antibiofilm efficacy, no acquired bacterial resistance or cross-resistance, low cytotoxicity, good tolerability, and an ability to promote wound healing. PVP-I represents a viable therapeutic option in wound care and biofilm management, with the potential to treat biofilm-infiltrated, critically colonised wounds. We propose a practical algorithm to guide the management of chronic, non-healing wounds due to critical colonisation or biofilm, using PVP-I.
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Affiliation(s)
- Paulo J. Alves
- Wounds Research LaboratoryUniversidade Católica PortuguesaPortoPortugal
| | | | | | - Luc G. Gryson
- Belgian Defence Military Medical ComponentBrusselsBelgium
| | - Sylvie Meaume
- Department of Geriatrics and Wound Care UnitHospital Rothschild, APHP Assistance Publique Hôpitaux de Paris, Sorbonne UniversitéParisFrance
| | - Stan J. Monstrey
- Department of Plastic SurgeryGhent University HospitalGhentBelgium
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30
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The Effects of Silver-Releasing Foam Dressings on Diabetic Foot Ulcer Healing. J Clin Med 2021; 10:jcm10071495. [PMID: 33916790 PMCID: PMC8038333 DOI: 10.3390/jcm10071495] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/22/2021] [Accepted: 03/29/2021] [Indexed: 01/13/2023] Open
Abstract
Diabetic foot ulcers (DFUs) are a serious complication in diabetic patients and lead to high morbidity and mortality. Numerous dressings have been developed to facilitate wound healing of DFUs. This study investigated the wound healing efficacy of silver-releasing foam dressings versus silver-containing cream in managing outpatients with DFUs. Sixty patients with Wagner Grade 1 to 2 DFUs were recruited. The treatment group received silver-releasing foam dressing (Biatain® Ag Non-Adhesive Foam dressing; Coloplast, Humlebaek, Denmark). The control group received 1% silver sulfadiazine (SSD) cream. The ulcer area in the silver foam group was significantly reduced compared with that in the SSD group after four weeks of treatment (silver foam group: 76.43 ± 7.41%, SSD group: 27.00 ± 4.95%, p < 0.001). The weekly wound healing rate in the silver foam group was superior to the SSD group during the first three weeks of treatment (p < 0.05). The silver-releasing foam dressing is more effective than SSD in promoting wound healing of DFUs. The effect is more pronounced in the initial three weeks of the treatment. Thus, silver-releasing foam could be an effective wound dressing for DFUs, mainly in the early period of wound management.
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31
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Effect of Silver Nanoparticles on Healing of Third-Degree Burns Infected with Pseudomonas Aeruginosa in Laboratory Mice. MACEDONIAN VETERINARY REVIEW 2021. [DOI: 10.2478/macvetrev-2020-0032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
The treatment of full-thickness skin burn using nanomaterials is promising as a medical application reducing the risk of infection and severe dermal scarring. Therefore, this study aims to evaluate the effectiveness of nanomaterials, particularly 3% silver nanoparticles containing ointment (3% SNO), on the full-thickness skin burn of laboratory mice. A total number of 36 male mice were used, equally divided into three groups: negative control (not burned and not treated); positive control (+ve) (burned and treated with castor oil and white petroleum jelly); and SNO-treated group (burned and treated with 3% SNO). The skin of the animals’ back was shaved. A 2x0.5 cm metal plate was heated on a burner to burn the skin of the animals of positive control and SNO-treated groups. Pseudomonas aeruginosa bacterial suspension was applied to the burnt area. The application of SNO, as well as the mixture of white petroleum jelly and castor oil, was started after 6 hours of inducing burns and continued for 14 days (three times daily) in the respected groups. The SNO-treated group showed accelerated healing within 14 days demonstrated by re-epithelialization of the epidermal layer and proliferation of the fibroblasts in the dermal layer. Less healing evidence was observed in the +ve control group in the same period. In conclusion, to our knowledge, this is the first study that uses a 3% SNO formula and has found that it has a promising impact on the treatment of infected skin burns.
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32
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Gürünlüoğlu K, Demircan M, Taşçı A, Üremiş MM, Türköz Y, Bağ HG, Akıncı A, Bayrakçı E. The Effects of Two Different Burn Dressings on Serum Oxidative Stress Indicators in Children with Partial Burn. J Burn Care Res 2020; 40:444-450. [PMID: 30874292 DOI: 10.1093/jbcr/irz037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this study, we evaluated and compared the effect of treatment with a hydrofiber dressing with silver (HFAg) and a polylactic membrane (PLM) on systemic oxidative stress in systemic inflammatory reaction in thermal burn injuries in children. A prospective randomized and matched pairing study of 20 to 50% of TBSA was performed from children equal to both sexes affected by thermal injuries. The control group was included in normal children of both sexes. Serum malondialdehyde (MDA), total antioxidant capacity (TAC), total oxidant capacity (TOC), and glutathione (GSH) levels were analyzed and the results were analyzed statistically. In this study, it was found that PLM treatment increased TAC and GSH levels in burn patients significantly more than the other group. With the use of PLM, TOC decreased to normal level from day 3. In the HFAg group, TAC and GSH levels began to increase on the seventh day. On the first day of the burn, the TOC level started to increase. This increase continued on days 7 and 14. The TOC level began to fall on the 21st day. The increase in TAC was higher in the PLM group. In the PLM group, TOC fell faster. As a result, we think that different burn dressings can have different systemic effects. We can speculate that PLM has an antioxidant effect in the burn tissue due to high lactate content. Therefore, PLM may have decreased serum oxidative stress indicators more effectively than HFAg.
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Affiliation(s)
- Kubilay Gürünlüoğlu
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Mehmet Demircan
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Aytaç Taşçı
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Muhammed Mehdi Üremiş
- Department of Medical Biochemistry, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Yusuf Türköz
- Department of Medical Biochemistry, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Harika Gözükara Bağ
- Department of Biostatistics and Medical Informatics, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Ayşehan Akıncı
- Department of Pediatric Endocrinology, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Ercan Bayrakçı
- Erzurum Regional Education and Research Hospital, Department of Pediatric Surgery, Erzurum, Turkey
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Effects of wound dressings containing silver on skin and immune cells. Sci Rep 2020; 10:15216. [PMID: 32939010 PMCID: PMC7494852 DOI: 10.1038/s41598-020-72249-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 07/15/2020] [Indexed: 01/18/2023] Open
Abstract
Wound dressings with silver have been shown to be cytotoxic in vitro. However, the extrapolation of this cytotoxicity to clinical settings is unclear. We applied dressings with various forms of silver on porcine skin ex vivo and investigated silver penetration and DNA damage. We assessed antimicrobial efficacy, cytotoxicity to skin cells, and immune response induced by the dressings. All dressings elevated the DNA damage marker γ-H2AX and the expression of stress-related genes in explanted skin relative to control. This corresponded with the amount of silver in the skin. The dressings reduced viability, induced oxidative stress and DNA damage in skin cells, and induced the production of pro-inflammatory IL-6 by monocytes. The oxidative burst and viability of activated neutrophils decreased. The amount of silver released into the culture medium varied among the dressings and correlated with in vitro toxicity. However, antimicrobial efficiencies did not correlate strongly with the amount of silver released from the dressings. Antimicrobial efficiency and toxicity are driven by the form of silver and the construction of dressings and not only by the silver concentration. The damaging effects of silver dressings in ex vivo skin highlight the importance of thorough in vivo investigation of silver dressing toxicity.
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Haidari H, Kopecki Z, Bright R, Cowin AJ, Garg S, Goswami N, Vasilev K. Ultrasmall AgNP-Impregnated Biocompatible Hydrogel with Highly Effective Biofilm Elimination Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:41011-41025. [PMID: 32840353 DOI: 10.1021/acsami.0c09414] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Ultrasmall silver nanoparticles (AgNPs; size < 3 nm) have attracted a great deal of interest as an alternative to commercially available antibiotics due to their ability to eliminate a wide range of microbial pathogens. However, most of these ultrasmall AgNPs are highly reactive and unstable, as well as susceptible to fast oxidation. Therefore, both the stability and toxicity remain major shortcomings for their clinical application and uptake. To circumvent these problems, we present a novel strategy to impregnate ultrasmall AgNPs into a biocompatible thermosensitive hydrogel that enables controlled release of silver alongside long-term storage stability and highly potent antibacterial activity. The advantage of this strategy lies in the combination of a homogenous dispersion of AgNPs in a hydrogel network, which serves as a sustained-release reservoir, and the unique feature of ultrasmall AgNP size, which provides an improved biofilm eradication capacity. The superior biofilm dispersion properties of the AgNP hydrogel is demonstrated in both single-species and multispecies biofilms, eradicating ∼80% of established biofilms compared to untreated controls. Notably, the effective antibacterial concentration of the formulation shows minimal toxicity to human fibroblasts and keratinocytes. These findings present a promising novel strategy for the development of AgNP hydrogels as an efficient antibacterial platform to combat resistant bacterial biofilms associated with wound infections.
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Affiliation(s)
| | | | | | | | | | - Nirmal Goswami
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Acharya Vihar, Bhubaneswar 751013, India
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Sami DG, Abdellatif A, Azzazy HME. Turmeric/oregano formulations for treatment of diabetic ulcer wounds. Drug Dev Ind Pharm 2020; 46:1613-1621. [PMID: 32806984 DOI: 10.1080/03639045.2020.1811305] [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: 12/20/2022]
Abstract
Diabetic wound infections and pressure ulcers pose a significant challenge to healthcare providers worldwide. The current study provides new and innovative wound care products that reduce inflammation, clear infection, and improve healing in an animal model of pressure ulcers in diabetic rats. Ointment, hydrogel, and nanofiber dressings were synthesized using 5% turmeric, 1% oregano, and 1% chitosan nanoparticles and tested for antibacterial and cytotoxicity in vitro, and wound healing effects in vivo. Turmeric ethanolic extract showed high antioxidant activity compared to Oregano, Chitosan Nanoparticles, and Alginate silver (p-value < 0.0001). The ointment and hydrogel formulation (5% Turmeric, 1% Oregano, and 1% chitosan) showed lower cytotoxicity compared to the commercial Alginate silver dressing. Ointment, hydrogel formulations, and commercial Alginate silver, showed significant antibacterial activity with 100% efficacy on both Staphylococcus aureus and Escherichia coli (p-value < 0.0001), compared to nanofibers which showed 50% reduction in bacterial growth (p-value < 0.0001). The new formulations were tested in a rat model of pressure ulcers. Ointment and nanofibers achieved complete wound healing by day 15 compared to the hydrogel and commercial Alginate silver dressing, which showed higher infection, and the wound remained partially open by day 21. In conclusion, Turmeric, Oregano extracts, and chitosan nanoparticles can be used for effective wound dressings in both diabetic and non-diabetic wounds. At relatively low concentrations, this combination provides a promising new wound treatment formulation that is antibacterial, anti-inflammatory, and antioxidant.
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Affiliation(s)
- Diana G Sami
- Biotechnology Program, School of Sciences and Engineering, the American University in Cairo, New Cairo, Egypt
| | - Ahmed Abdellatif
- Biotechnology Program, School of Sciences and Engineering, the American University in Cairo, New Cairo, Egypt.,Department of Biology, School of Sciences and Engineering, the American University in Cairo, New Cairo, Egypt
| | - Hassan M E Azzazy
- Biotechnology Program, School of Sciences and Engineering, the American University in Cairo, New Cairo, Egypt.,Department of Chemistry, School of Sciences and Engineering, the American University in Cairo, New Cairo, Egypt
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Krishnan PD, Banas D, Durai RD, Kabanov D, Hosnedlova B, Kepinska M, Fernandez C, Ruttkay-Nedecky B, Nguyen HV, Farid A, Sochor J, Narayanan VHB, Kizek R. Silver Nanomaterials for Wound Dressing Applications. Pharmaceutics 2020; 12:E821. [PMID: 32872234 PMCID: PMC7557923 DOI: 10.3390/pharmaceutics12090821] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/19/2020] [Accepted: 08/25/2020] [Indexed: 12/14/2022] Open
Abstract
Silver nanoparticles (AgNPs) have recently become very attractive for the scientific community due to their broad spectrum of applications in the biomedical field. The main advantages of AgNPs include a simple method of synthesis, a simple way to change their morphology and high surface area to volume ratio. Much research has been carried out over the years to evaluate their possible effectivity against microbial organisms. The most important factors which influence the effectivity of AgNPs against microorganisms are the method of their preparation and the type of application. When incorporated into fabric wound dressings and other textiles, AgNPs have shown significant antibacterial activity against both Gram-positive and Gram-negative bacteria and inhibited biofilm formation. In this review, the different routes of synthesizing AgNPs with controlled size and geometry including chemical, green, irradiation and thermal synthesis, as well as the different types of application of AgNPs for wound dressings such as membrane immobilization, topical application, preparation of nanofibers and hydrogels, and the mechanism behind their antimicrobial activity, have been discussed elaborately.
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Affiliation(s)
- Priya Dharshini Krishnan
- Department of Pharmacy, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613-401, India; (P.D.K.); (R.D.D.)
| | - Dominik Banas
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 753/5, 625 00 Brno-Bohunice, Czech Republic; (D.B.); (D.K.)
- Department of Research and Development, Prevention Medicals, Tovarni 342, 742 13 Studenka-Butovice, Czech Republic;
| | - Ramya Devi Durai
- Department of Pharmacy, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613-401, India; (P.D.K.); (R.D.D.)
| | - Daniil Kabanov
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 753/5, 625 00 Brno-Bohunice, Czech Republic; (D.B.); (D.K.)
- Department of Research and Development, Prevention Medicals, Tovarni 342, 742 13 Studenka-Butovice, Czech Republic;
| | - Bozena Hosnedlova
- Department of Viticulture and Enology, Faculty of Horticulture, Mendel University in Brno, Valticka 337, 691 44 Lednice, Czech Republic; (B.H.); (J.S.)
| | - Marta Kepinska
- Department of Biomedical and Environmental Analyses, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wroclaw, Poland;
| | - Carlos Fernandez
- School of Pharmacy and Life Sciences, Robert Gordon University, Garthdee Road, Aberdeen AB10 7QB, UK;
| | - Branislav Ruttkay-Nedecky
- Department of Research and Development, Prevention Medicals, Tovarni 342, 742 13 Studenka-Butovice, Czech Republic;
- Department of Viticulture and Enology, Faculty of Horticulture, Mendel University in Brno, Valticka 337, 691 44 Lednice, Czech Republic; (B.H.); (J.S.)
- Department of Molecular Pharmacy, Faculty of Pharmacy, Masaryk University, Palackeho 1946/1, 612 00 Brno, Czech Republic
| | - Hoai Viet Nguyen
- Research Center for Environmental Monitoring and Modeling, University of Science, Vietnam National University, 334 Nguyen Trai Street, Hanoi 100000, Vietnam;
| | - Awais Farid
- Division of Environment and Sustainability, Hong Kong University of Science and Technology, Room 4412, Clear Water Bay, Kowloon, Hong Kong, China;
| | - Jiri Sochor
- Department of Viticulture and Enology, Faculty of Horticulture, Mendel University in Brno, Valticka 337, 691 44 Lednice, Czech Republic; (B.H.); (J.S.)
| | - Vedha Hari B. Narayanan
- Department of Pharmacy, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613-401, India; (P.D.K.); (R.D.D.)
| | - Rene Kizek
- Department of Research and Development, Prevention Medicals, Tovarni 342, 742 13 Studenka-Butovice, Czech Republic;
- Department of Viticulture and Enology, Faculty of Horticulture, Mendel University in Brno, Valticka 337, 691 44 Lednice, Czech Republic; (B.H.); (J.S.)
- Department of Biomedical and Environmental Analyses, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wroclaw, Poland;
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Masaryk University, Palackeho 1946/1, 612 00 Brno, Czech Republic
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Pang Y, Qin M, Hu P, Ji K, Xiao R, Sun N, Pan X, Zhang X. Resveratrol protects retinal ganglion cells against ischemia induced damage by increasing Opa1 expression. Int J Mol Med 2020; 46:1707-1720. [PMID: 32901846 PMCID: PMC7521588 DOI: 10.3892/ijmm.2020.4711] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 07/27/2020] [Indexed: 12/15/2022] Open
Abstract
Loss of idiopathic retinal ganglion cells (RGCs) leads to irreversible vision defects and is considered the primary characteristic of glaucoma. However, effective treatment strategies in terms of RGC neuroprotection remain elusive. In the present study, the protective effects of resveratrol on RGC apoptosis, and the mechanisms underlying its effects were investigated, with a particular emphasis on the function of optic atrophy 1 (Opa1). In an ischemia/reperfusion (I/R) injury model, the notable thinning of the retina, significant apoptosis of RGCs, reduction in Opa1 expression and long Opa1 isoform to short Opa1 isoform ratios (L-Opa1/S-Opa1 ratio) were observed, all of which were reversed by resveratrol administration. Serum deprivation resulted in reductions in R28 cell viability, superoxide dismutase (SOD) activity, Opa1 expression and induced apoptosis, which were also partially reversed by resveratrol treatment. To conclude, results from the present study suggest that resveratrol treatment significantly reduced retinal damage and RGC apoptosis in I/R injury and serum deprivation models. In addition, resveratrol reversed the downregulated expression of Opa1 and reduced SOD activity. Mechanistically, resveratrol influenced mitochondrial dynamics by regulating the L-Opa1/S-Opa1 ratio. Therefore, these observations suggest that resveratrol may exhibit potential as a therapeutic agent for RGC damage in the future.
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Affiliation(s)
- Yulian Pang
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Nanchang, Jiangxi 330006, P.R. China
| | - Mengqi Qin
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Nanchang, Jiangxi 330006, P.R. China
| | - Piaopiao Hu
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Nanchang, Jiangxi 330006, P.R. China
| | - Kaibao Ji
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Nanchang, Jiangxi 330006, P.R. China
| | - Ruihan Xiao
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Nanchang, Jiangxi 330006, P.R. China
| | - Nan Sun
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Nanchang, Jiangxi 330006, P.R. China
| | - Xinghui Pan
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Nanchang, Jiangxi 330006, P.R. China
| | - Xu Zhang
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Provincial Key Laboratory for Ophthalmology, Nanchang, Jiangxi 330006, P.R. China
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Gürünlüoğlu K, Demircan M, Koç A, Koçbıyık A, Taşçı A, Durmuş K, Gürünlüoğlu S, Gözükara Bağ H. The Effects of Different Burn Dressings on Length of Telomere and Expression of Telomerase in Children With Thermal Burns. J Burn Care Res 2020; 40:302-311. [PMID: 30805617 DOI: 10.1093/jbcr/irz019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Burns are a common traumatic injury triggered by local tissue damage and a systemic response. In this study, we evaluated the effects of different burn dressings on telomere kinetics in children with thermal burn injury. METHODS Sixty children with thermal burn were included in this prospective study. The burn area of the patients included 20 to 50% total body surface area. Three different dressings (hydrofiber with silver [HFAg], poylactic membrane [PLM], and silver sulfadiazine [SSD]) and control groups were created. Telomere length in nucleated blood cells and telomerase expression in the skin tissue were evaluated in control and burn groups. RESULTS In the whole burn groups, telomere length in blood cells increased. The length of telomeres increased the most in the SSD group. The PLM group is the treatment that increases the number of squamous cell counts in the basal layer and telomerase expression in the skin. In HFAg and SSD groups, the expression of telomerase in the skin is decreased. In the HFAg group, the basal layer in the skin was also reduced in squamous cells. CONCLUSION In all burn groups, the telomere length of nucleated cells in the blood was higher than in the control group. SSD dressing along with autografting is the treatment method that maximizes telomere length in blood cells. The PLM has the most increased telomerase expression in the skin of burned patients. The PLM application increases the number of cells on both burned and normal skin.
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Affiliation(s)
- Kubilay Gürünlüoğlu
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, Malatya, Turkey
| | - Mehmet Demircan
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, Malatya, Turkey
| | - Ahmet Koç
- Department of Medical Genetics, Faculty of Medicine, İnönü University, Malatya, Turkey
| | - Alper Koçbıyık
- Pathology Laboratory, Istanbul Kanuni Sultan Suleyman Education and Research Hospital, Turkey
| | - Aytaç Taşçı
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, Malatya, Turkey
| | - Kübra Durmuş
- Department of Medical Genetics, Faculty of Medicine, İnönü University, Malatya, Turkey
| | - Semra Gürünlüoğlu
- Pathology Laboratory, Malatya Education and Research Hospital, Turkey
| | - Harika Gözükara Bağ
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, İnönü University, Malatya, Turkey
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Kambale EK, Nkanga CI, Mutonkole BPI, Bapolisi AM, Tassa DO, Liesse JMI, Krause RW, Memvanga PB. Green synthesis of antimicrobial silver nanoparticles using aqueous leaf extracts from three Congolese plant species ( Brillantaisia patula, Crossopteryx febrifuga and Senna siamea). Heliyon 2020; 6:e04493. [PMID: 32793824 PMCID: PMC7408328 DOI: 10.1016/j.heliyon.2020.e04493] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/29/2020] [Accepted: 07/14/2020] [Indexed: 11/15/2022] Open
Abstract
In the present study, silver nanoparticles (AgNPs) were synthesized using aqueous leaf extracts of three Congolese plant species, namely Brillantaisia patula (BR-PA), Crossopteryx febrifuga (CR-FE) and Senna siamea (SE-SI). The obtained AgNPs were studied for their optical, structural, surface morphological and antibacterial properties. The prepared AgNPs were characterized by using UV-Visible spectra, Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray spectroscopy (EDX) and X-ray diffractometer (XRD). The synthesized nanoparticles were spherical shaped and well-dispersed with average sizes ranging from 45 to 110 nm. The AgNPs derived from BR-PA, CR-FE and SE-SI exhibited higher antibacterial activity against three bacterial pathogens of the human skin compared to their respective crude extracts and AgNO3. This indicated that the biomolecules covering the nanoparticles may enhance the biological activity of metal nanoparticles. Hence, our results support that biogenic synthesis of AgNPs from Congolese plants constitutes a potential area of interest for the therapeutic management of microbial diseases such as infectious skin diseases.
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Affiliation(s)
- Espoir K. Kambale
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, B.P. 212, Kinshasa XI, Democratic Republic of the Congo
| | - Christian I. Nkanga
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, B.P. 212, Kinshasa XI, Democratic Republic of the Congo
- Center for Chemico- and Bio-Medicinal Research (CCBR), Department of Chemistry, Rhodes University, PO Box 94, Grahamstown 6140, Eastern Cape, South Africa
| | - Blaise-Pascal I. Mutonkole
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, B.P. 212, Kinshasa XI, Democratic Republic of the Congo
| | - Alain M. Bapolisi
- Center for Chemico- and Bio-Medicinal Research (CCBR), Department of Chemistry, Rhodes University, PO Box 94, Grahamstown 6140, Eastern Cape, South Africa
| | - Daniel O. Tassa
- Laboratory of Microbiology, Faculty of Pharmaceutical Sciences, University of Kinshasa, B.P. 212, Kinshasa XI, Democratic Republic of the Congo
| | - Jean-Marie I. Liesse
- Laboratory of Microbiology, Faculty of Pharmaceutical Sciences, University of Kinshasa, B.P. 212, Kinshasa XI, Democratic Republic of the Congo
| | - Rui W.M. Krause
- Center for Chemico- and Bio-Medicinal Research (CCBR), Department of Chemistry, Rhodes University, PO Box 94, Grahamstown 6140, Eastern Cape, South Africa
| | - Patrick B. Memvanga
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, B.P. 212, Kinshasa XI, Democratic Republic of the Congo
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Kharkar PM, Osborne SN, Stern SL, Pleitner A, Wiencek KM, Kieswetter KM. Assessment of Silver Levels in a Closed-Incision Negative Pressure Therapy Dressing: In Vitro and In Vivo Study. Adv Wound Care (New Rochelle) 2020; 9:462-471. [PMID: 32857020 PMCID: PMC7382392 DOI: 10.1089/wound.2019.0997] [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] [Indexed: 11/13/2022] Open
Abstract
Objective: In recent years, reticulated open-cell foam-based closed-incision negative pressure therapy (ROCF-ciNPT) has shown effectiveness in management of various postoperative incisions. These dressings consist of a skin interface layer that absorbs fluid from the skin surface and reduces the potential for microbial colonization within the dressing by means of ionic silver. This study examines the ability of silver to reduce the bioburden within the dressing as well as the localized effect due to potential silver mobility. Approach: Ability of silver to reduce bioburden within the ROCF-ciNPT dressing was assessed using Staphylococcus aureus, Pseudomonas aeruginosa, and Candida spp. Furthermore, silver mobility was assessed using an in vitro skin model to study the zone of inhibition along with released silver quantification. Using a porcine model, diffusion of silver into blood and tissue was studied using emission spectrometry and histology. Results: Microbial growth in the ROCF-ciNPT dressing was significantly reduced (∼2.7–4.9 log reduction) compared to a silver-free negative control. No zone of inhibition was observed for microbial colonies for up to 7 days with minimal localized silver release (<5.5 ppm release). In vivo studies demonstrated no measurable concentration (<0.2 μg/g) of silver in the blood, urine, feces, kidney, and liver tissue biopsy. Innovation: This study provides an important insight into silver concentration and mobility within the ROCF-ciNPT dressing, given emerging concerns associated with potential silver cytotoxicity. Conclusion: These results indicate the concentration of silver (0.019% silver by weight) in the ROCF-ciNPT dressings has been adequate to reduce bioburden within the skin interface layer, while severely limiting the amount of silver leaching out.
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A human skin equivalent burn model to study the effect of a nanocrystalline silver dressing on wound healing. Burns 2020; 47:417-429. [PMID: 32830005 DOI: 10.1016/j.burns.2020.07.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 07/02/2020] [Accepted: 07/06/2020] [Indexed: 01/17/2023]
Abstract
In this study, a deep burn wound model was established using a 3D human skin equivalent (HSE) model and this was compared to native skin. HSEs were constructed from dermis derived from abdominoplasty/breast surgery and this dermal template was seeded with primary keratinocytes and fibroblasts. The HSE model was structurally similar to native skin with a stratified and differentiated epidermis. A contact burn (60 °C, 80 °C, 90 °C) was applied with a modified soldering iron and wounds were observed at day 1 and 7 after burn. The HSEs demonstrated re-growth with keratinocyte proliferation and formation of a neo-epidermis after burn injury, whereas the ex vivo native skin did not. To assess the suitability of the 3D HSE model for penetration and toxicity studies, a nanocrystalline silver dressing was applied to the model for 7 days, with and without burn injury. The effect of silver on skin re-growth and its penetration and subcellular localization was assessed in HSEs histologically and with laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS). The silver treatment delayed or reduced skin re-growth, and silver particles were detected on the top of the epidermis, and within the papillary dermis. This novel in vitro 3D multicellular deep burn wound model is effective for studying the pathology and treatment of burn wound injury and is suitable for penetration and toxicity studies of wound healing treatments.
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Benskin LL. Commentary: Response of Human Macrophages to Clinically Applied Wound Dressings Loaded With Silver. Front Bioeng Biotechnol 2020; 8:706. [PMID: 32760703 PMCID: PMC7371934 DOI: 10.3389/fbioe.2020.00706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/05/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Linda L. Benskin
- Independent Researcher for Wound Care in Remote and Conflict Areas of Developing Countries, Austin, TX, United States
- Ferris Mfg. Corp., Fort Worth, TX, United States
- *Correspondence: Linda L. Benskin
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Anti-bacterial activity of inorganic nanomaterials and their antimicrobial peptide conjugates against resistant and non-resistant pathogens. Int J Pharm 2020; 586:119531. [PMID: 32540348 DOI: 10.1016/j.ijpharm.2020.119531] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 06/04/2020] [Accepted: 06/06/2020] [Indexed: 12/20/2022]
Abstract
This review details the antimicrobial applications of inorganic nanomaterials of mostly metallic form, and the augmentation of activity by surface conjugation of peptide ligands. The review is subdivided into three main sections, of which the first describes the antimicrobial activity of inorganic nanomaterials against gram-positive, gram-negative and multidrug-resistant bacterial strains. The second section highlights the range of antimicrobial peptides and the drug resistance strategies employed by bacterial species to counter lethality. The final part discusses the role of antimicrobial peptide-decorated inorganic nanomaterials in the fight against bacterial strains that show resistance. General strategies for the preparation of antimicrobial peptides and their conjugation to nanomaterials are discussed, emphasizing the use of elemental and metallic oxide nanomaterials. Importantly, the permeation of antimicrobial peptides through the bacterial membrane is shown to aid the delivery of nanomaterials into bacterial cells. By judicious use of targeting ligands, the nanomaterial becomes able to differentiate between bacterial and mammalian cells and, thus, reduce side effects. Moreover, peptide conjugation to the surface of a nanomaterial will alter surface chemistry in ways that lead to reduction in toxicity and improvements in biocompatibility.
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Sukmawati D, Eryani A, Damayanti L. Silver Sulfadiazine's Effect on Keratin-19 Expression as Stem Cell Marker in Burn Wound Healing. Biomedicine (Taipei) 2020; 10:5-11. [PMID: 33854915 PMCID: PMC7608848 DOI: 10.37796/2211-8039.1014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 11/13/2019] [Indexed: 10/25/2022] Open
Abstract
BACKGROUND Burn wounds are one of the causes of cutaneous injury that involve both epidermal and dermal layers of skin. Silver sulfadiazine (SSD) has been widely used to treat burn wounds, however recent studies have found the treatment to have some drawbacks, such as cellular toxicity effects. Cutaneous wound regeneration is known to start from the basal layer of the epidermal epithelial cells, which are enriched with highly proliferative cells. Keratin-19 (K19) is one of the epidermal stem cell biomarkers found in the skin. This study aims to explore the expression of K19 in burn wound tissue and to investigate the effect of SSD on its expression. METHODS We created a burn wound model in Sprague Dawley rats and randomly divided them into control and SSD groups. Wound closure was evaluated (visitrak) overtime series followed by histological evaluation of K19 expression in the wound tissue (immunohistochemistry staining). RESULTS Our model successfully represents full-thickness damage caused by a burn wound. The SSD group showed a faster reduction of wound surface area (wound closure) compared to the control group with the peak at day 18 post wounding (p < 0.05). K19 expression was found in both groups and was distributed on epidermal layers, hair follicles and dermis of granulation tissue showing similar patterns. CONCLUSION Topical application of SSD on burn wounds showed superiority in wound closure and is likely to have no harmful effect on epidermal stem cells. However, further study is required to investigate the effect of silver species on cell viability and toxicity effects during long term treatment.
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Affiliation(s)
- Dewi Sukmawati
- Department of Histology, Faculty of Medicine Universitas Indonesia, Jln. Salemba Raya No. 6 Jakarta, 10430, Jakarta, Indonesia
| | - Astheria Eryani
- Department of Histology, Faculty of Medicine Tarumanagara University, Jln. Letjen S. Parman No.1, Tomang, Grogol Petamburan, Jakarta, 11440, Indonesia
| | - Lia Damayanti
- Department of Histology, Faculty of Medicine Universitas Indonesia, Jln. Salemba Raya No. 6 Jakarta, 10430, Jakarta, Indonesia
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Gámez-Herrera E, García-Salinas S, Salido S, Sancho-Albero M, Andreu V, Pérez M, Luján L, Irusta S, Arruebo M, Mendoza G. Drug-eluting wound dressings having sustained release of antimicrobial compounds. Eur J Pharm Biopharm 2020; 152:327-339. [PMID: 32473289 DOI: 10.1016/j.ejpb.2020.05.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 05/12/2020] [Accepted: 05/25/2020] [Indexed: 01/07/2023]
Abstract
Wound healing is a complex and costly public health problem that should be timely addressed to achieve a rapid and adequate tissue repair avoiding or even eliminating potential pathogenic infection. Chronic infected non-healing wounds represent a serious concern for health care systems. Efficient wound dressings with tailored therapy having the best response and highest safety margin for the management of chronic non-healing wounds are still needed. The use of novel wound dressing materials has emerged as a promising tool to fulfil these requirements. In this work, asymmetric electrospun polycaprolactone (PCL)-based nanofibers (NFs) were decorated with electrosprayed poly(lactic-co-glycolic acid) microparticles (PLGA MPs) containing the natural antibacterial compound thymol (THY) in order to obtain drug eluting antimicrobial dressings having sustained release. The synthesized dressings successfully inhibited the in vitro growth of Staphylococcus aureus ATCC 25923, showing also at the same doses cytocompatibility on human dermal fibroblasts and keratinocyte cultures after treatment for 24 h, which was not observed when using free thymol. An in vivo murine excisional wound splinting model, followed by the experimental infection of the wounds with S. aureus and their treatment with the synthesized dressings, pointed to the reduction of the bacterial load in wounds after 7 days, though the total elimination of the infection was not reached. The findings indicated the relevance of the direct contact between the dressings and the bacteria, highlighting the need to tune their design considering the wound surface and the nature of the antimicrobial cargo contained.
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Affiliation(s)
- Enrique Gámez-Herrera
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain
| | - Sara García-Salinas
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Sofía Salido
- Department of Inorganic and Organic Chemistry, Faculty of Experimental Sciences, University of Jaén, Agrifood Campus of International Excellence (ceiA3), 23071 Jaén, Spain
| | - María Sancho-Albero
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
| | - Vanesa Andreu
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
| | - Marta Pérez
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza & AgriFood Institute of Aragon (IA2), C/ Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Lluís Luján
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza & AgriFood Institute of Aragon (IA2), C/ Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Silvia Irusta
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain.
| | - Manuel Arruebo
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain.
| | - Gracia Mendoza
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
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Pang S, Gao Y, Wang F, Wang Y, Cao M, Zhang W, Liang Y, Song M, Jiang G. Toxicity of silver nanoparticles on wound healing: A case study of zebrafish fin regeneration model. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 717:137178. [PMID: 32062274 DOI: 10.1016/j.scitotenv.2020.137178] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 02/02/2020] [Accepted: 02/06/2020] [Indexed: 06/10/2023]
Abstract
Dressings coated with silver nanoparticle (AgNP) are widely used in the management of acute and chronic wounds. However, whether AgNP exerts toxicity on wound healing remains ambiguous. To demonstrate the effects of AgNP on wound healing, we precisely quantified the recovery speed of wound by taking advantage of the fin regeneration of zebrafish. This method also enabled assessment of the adverse effect of AgNP on various steps of wound healing in vivo. We revealed that AgNP treatment at the concentration of 2 μg/ml impaired fin regeneration when exposure was performed at the phases of epithelialization and the beginning of blastema formation. Cell proliferation of regenerative blastema was significantly decreased after AgNP exposure. But the canonical signals including Wingless/Integrated (Wnt), Notch and Fibroblast growth factor (Fgf) which play important roles in cell proliferation during fin regeneration were not modulated at 36 hours post amputation (hpa). Further study showed that AgNP impaired fin regeneration through declining amputation-induced ROS as early as epithelialized phase at 18 hpa, rather than inducing ROS generation. AgNP exposure also promoted recruitment of neutrophils in the early phase of wound healing, which suggests that this event dampened amputation-induced ROS. Overall, this study suggested that application of AgNP-coated dressings should be carefully considered at the beginning stage of wound healing.
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Affiliation(s)
- Shaochen Pang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China; Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yue Gao
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fengbang Wang
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuanyuan Wang
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mengxi Cao
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China; Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Wenjuan Zhang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China; Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Yong Liang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China; Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Maoyong Song
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China; Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Guibin Jiang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China; Institute of Environment and Health, Jianghan University, Wuhan 430056, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Stojkovska J, Zvicer J, Obradovic B. Preclinical functional characterization methods of nanocomposite hydrogels containing silver nanoparticles for biomedical applications. Appl Microbiol Biotechnol 2020; 104:4643-4658. [DOI: 10.1007/s00253-020-10521-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 01/04/2020] [Accepted: 03/03/2020] [Indexed: 12/20/2022]
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48
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Koivuniemi R, Hakkarainen T, Kiiskinen J, Kosonen M, Vuola J, Valtonen J, Luukko K, Kavola H, Yliperttula M. Clinical Study of Nanofibrillar Cellulose Hydrogel Dressing for Skin Graft Donor Site Treatment. Adv Wound Care (New Rochelle) 2020; 9:199-210. [PMID: 32117583 PMCID: PMC7047117 DOI: 10.1089/wound.2019.0982] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 04/29/2019] [Indexed: 11/23/2022] Open
Abstract
Objective: Skin graft donor site management is a concern particularly for elderly patients and patients with poor wound healing competence, and also because donor sites are a source of pain and discomfort. Although different types of dressings exist, there is no consensus regarding optimal dressing type on donor site care to promote healing, reduce pain, and improve patients' comfort. Approach: This prospective, single-center clinical trial evaluated the performance of nanofibrillar cellulose (NFC) wound dressing (FibDex® by UPM-Kymmene Corporation) for treatment of donor sites compared with a polylactide-based copolymer dressing. The study enrolled 24 patients requiring skin grafting with mean age of 49 ± 18. The primary outcome measure was wound healing time. Secondary outcomes, the epithelialization, subjective pain, the scar appearance assessed using the Patient and Observer Scar Assessment Scale (POSAS), and skin elasticity and transepidermal water loss (TEWL), were evaluated at 1 and 6 months postoperatively. Results: No statistically significant differences were observed between NFC and copolymer dressings regarding wound healing time, epithelialization, experience of pain, or TEWL. Significant differences were observed in the POSAS results for thickness and vascularity in the Observer score, in the favor of NFC over copolymer dressing. Moreover, skin elasticity was significantly improved with NFC dressing in terms of viscoelasticity and elastic modulus at 1 month postoperatively. Innovation: NFC dressing is a new, green sustainable product for wound treatment without animal or human-origin components. Conclusion: NFC dressing provides efficient wound healing at skin graft donor sites and is comparable or even preferable compared with the copolymer dressing.
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Affiliation(s)
- Raili Koivuniemi
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Tiina Hakkarainen
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
- Department of Plastic Surgery, Helsinki Burn Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Jasmi Kiiskinen
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | | | - Jyrki Vuola
- Department of Plastic Surgery, Helsinki Burn Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Jussi Valtonen
- Department of Plastic Surgery, Helsinki Burn Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | | | - Heli Kavola
- Department of Plastic Surgery, Helsinki Burn Centre, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Marjo Yliperttula
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
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49
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Varela P, Marlinghaus L, Sartori S, Viebahn R, Salber J, Ciardelli G. Response of Human Macrophages to Clinically Applied Wound Dressings Loaded With Silver. Front Bioeng Biotechnol 2020; 8:124. [PMID: 32158748 PMCID: PMC7051918 DOI: 10.3389/fbioe.2020.00124] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 02/10/2020] [Indexed: 11/15/2022] Open
Abstract
Wound infections constitute an increasing clinical problem worldwide. To reverse this trend, several wound dressings with antimicrobial properties have been developed. Considering the increasing presence of antibiotic-resistant microorganisms, product developers have been focusing their efforts in introducing antibiotic-free antibacterial wound dressings to the market, with silver being the most commonly incorporated antimicrobial agent. In this scenario, gaining information about the microbial and eukaryotic cells’ response to these dressings is needed for a proper selection of antimicrobial dressings for the different cases of infected wounds. In particular, one insufficiently explored parameter is the effect of the dressings on the immunomodulation of macrophages, the main immune cell population participating in the repair process, because of their pivotal role in the transition of the inflammation to the proliferation phase of wound healing. In this work, three different clinically applied antimicrobial, silver impregnated wound dressings were selected: Atrauman® Ag, Biatain® Alginate Ag and PolyMem WIC Silver® Non-adhesive. Antimicrobial susceptibility tests (disk diffusion and broth dilution), cell viability evaluation (CellTiter-Blue®) and experiments to determine macrophage polarization (e.g., flow cytometry, ELISA and glucose uptake) were performed after 24 h of incubation. Among all products tested, Biatain® Alginate Ag induced the most evident bactericidal effect on Gram-positive and Gram-negative bacteria, followed by PolyMem WIC Silver® Non-adhesive, but did not show good cytocompatibility in vitro. On the other hand, Atrauman® Ag showed excellent cytocompatibility on L929 fibroblasts, HaCaT keratinocytes and THP-1 derived macrophages, but no significant antimicrobial activity was observed. Overall, it was confirmed that macrophages initiate, in fact, an alteration of their metabolism and phenotype in response to wound dressings of different composition in a short period of contact (24 h). M0 resting state macrophages common response to all silver-containing dressings used in this study was to increase the production of the anti-inflammatory cytokine TGF-β, which indicates an acquisition of M2-like macrophages characteristics.
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Affiliation(s)
- Patrícia Varela
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy.,Department of Experimental Surgery, Universitätsklinikum Knappschaftskrankenhaus Bochum, Ruhr-University Bochum, Bochum, Germany
| | | | - Susanna Sartori
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - Richard Viebahn
- Department of Experimental Surgery, Universitätsklinikum Knappschaftskrankenhaus Bochum, Ruhr-University Bochum, Bochum, Germany
| | - Jochen Salber
- Department of Experimental Surgery, Universitätsklinikum Knappschaftskrankenhaus Bochum, Ruhr-University Bochum, Bochum, Germany
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
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50
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Gao J, Na H, Zhong R, Yuan M, Guo J, Zhao L, Wang Y, Wang L, Zhang F. One step synthesis of antimicrobial peptide protected silver nanoparticles: The core-shell mutual enhancement of antibacterial activity. Colloids Surf B Biointerfaces 2020; 186:110704. [DOI: 10.1016/j.colsurfb.2019.110704] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 11/22/2019] [Accepted: 12/02/2019] [Indexed: 01/01/2023]
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