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Rippon MG, Fleming L, Chen T, Rogers AA, Ousey K. Artificial intelligence in wound care: diagnosis, assessment and treatment of hard-to-heal wounds: a narrative review. J Wound Care 2024; 33:229-242. [PMID: 38573907 DOI: 10.12968/jowc.2024.33.4.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
OBJECTIVE The effective assessment of wounds, both acute and hard-to-heal, is an important component in the delivery by wound care practitioners of efficacious wound care for patients. Improved wound diagnosis, optimising wound treatment regimens, and enhanced prevention of wounds aid in providing patients with a better quality of life (QoL). There is significant potential for the use of artificial intelligence (AI) in health-related areas such as wound care. However, AI-based systems remain to be developed to a point where they can be used clinically to deliver high-quality wound care. We have carried out a narrative review of the development and use of AI in the diagnosis, assessment and treatment of hard-to-heal wounds. We retrieved 145 articles from several online databases and other online resources, and 81 of them were included in this narrative review. Our review shows that AI application in wound care offers benefits in the assessment/diagnosis, monitoring and treatment of acute and hard-to-heal wounds. As well as offering patients the potential of improved QoL, AI may also enable better use of healthcare resources.
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Affiliation(s)
- Mark G Rippon
- University of Huddersfield, Huddersfield, UK
- Daneriver Consultancy Ltd, Holmes Chapel, UK
| | - Leigh Fleming
- School of Computing and Engineering, University of Huddersfield, Huddersfield, UK
| | - Tianhua Chen
- School of Computing and Engineering, University of Huddersfield, Huddersfield, UK
| | | | - Karen Ousey
- University of Huddersfield Department of Nursing and Midwifery, Huddersfield, UK
- Adjunct Professor, School of Nursing, Faculty of Health at the Queensland University of Technology, Australia
- Visiting Professor, Royal College of Surgeons in Ireland, Dublin, Ireland
- Chair, International Wound Infection Institute
- President Elect, International Skin Tear Advisory Panel
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Chan WW, Le QB, Naing MW, Choudhury D. Commercialization of skin substitutes for third-degree burn wounds. Trends Biotechnol 2024; 42:385-388. [PMID: 37949776 DOI: 10.1016/j.tibtech.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 11/12/2023]
Abstract
Technological advances have increasingly provided more and better treatment options for patients with severe burns. Here, we provide a bird's-eye view of the product development process for third-degree burn wounds with considerations of the critical interaction with regulatory bodies, existing technological gaps, and future directions for skin substitutes.
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Affiliation(s)
- Weng Wan Chan
- Biomanufacturing Technology, Bioprocessing Technology Institute (BTI), Agency for Science, Technology, and Research (A*STAR), 20 Biopolis Way, Singapore 138668, Singapore
| | - Quang Bach Le
- Biomanufacturing Technology, Bioprocessing Technology Institute (BTI), Agency for Science, Technology, and Research (A*STAR), 20 Biopolis Way, Singapore 138668, Singapore
| | - May Win Naing
- Singapore Institute of Manufacturing Technology (SIMTech), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Deepak Choudhury
- Biomanufacturing Technology, Bioprocessing Technology Institute (BTI), Agency for Science, Technology, and Research (A*STAR), 20 Biopolis Way, Singapore 138668, Singapore.
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Ofosu-Appiah F, Acquah EE, Mohammed J, Sakyi Addo C, Agbodzi B, Ofosu DAS, Myers CJ, Mohktar Q, Ampomah OW, Ablordey A, Amissah NA. Klebsiella pneumoniae ST147 harboring blaNDM-1, multidrug resistance and hypervirulence plasmids. Microbiol Spectr 2024; 12:e0301723. [PMID: 38315028 PMCID: PMC10913492 DOI: 10.1128/spectrum.03017-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 12/17/2023] [Indexed: 02/07/2024] Open
Abstract
The spread of hypervirulent (hv) and carbapenem-/multidrug-resistant Klebsiella pneumoniae is an emerging problem in healthcare settings. The New Delhi metallo-β-lactamase-1 (blaNDM-1) is found in Enterobacteriaceae including K. pneumoniae. The blaNDM-1 is capable of hydrolyzing β-lactam antibiotics which are used for treatment of severe infections caused by multidrug-resistant Gram-negative bacteria. This is associated with the unacceptably high mortality rate in immunocompromised burn injury patients. This study reports on the characterization of blaNDM-1 gene and virulence factors in hv carbapenem-/multidrug-resistant K. pneumoniae ST147 in the burns unit of a tertiary teaching hospital during routine surveillance. Two K. pneumoniae strains were obtained from wounds of burn-infected patients from May 2020 to July 2021. The hypervirulence genes and genetic context of the blaNDM-1 gene and mobile genetic elements potentially involved in the transposition of the gene were analyzed. We identified a conserved genetic background and an IS26 and open reading frame flanking the blaNDM-1 gene that could suggest its involvement in the mobilization of the gene. The plasmid harbored additional antibiotic resistance predicted regions that were responsible for resistance to almost all the routinely used antibiotics. To ensure the identification of potential outbreak strains during routine surveillance, investigations on resistance genes and their environment in relation to evolution are necessary for molecular epidemiology.IMPORTANCEData obtained from this study will aid in the prompt identification of disease outbreaks including evolving resistance and virulence of the outbreak bacteria. This will help establish and implement antimicrobial stewardship programs and infection prevention protocols in fragile health systems in countries with limited resources. Integration of molecular surveillance and translation of whole-genome sequencing in routine diagnosis will provide valuable data for control of infection. This study reports for the first time a high-risk clone K. pneumoniae ST147 with hypervirulence and multidrug-resistance features in Ghana.
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Affiliation(s)
- Frederick Ofosu-Appiah
- West African Centre for Cell Biology of Infectious Pathogens, University of Ghana, Accra, Ghana
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Ezra E. Acquah
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Jibril Mohammed
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Comfort Sakyi Addo
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Bright Agbodzi
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Dorcas A. S. Ofosu
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Charles J. Myers
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Quaneeta Mohktar
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Opoku-Ware Ampomah
- The Burns Unit, Reconstructive Plastic Surgery and Burns Unit, Korle Bu Teaching Hospital, Accra, Ghana
| | - Anthony Ablordey
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Nana Ama Amissah
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
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Mota-Rojas D, Ogi A, Villanueva-García D, Hernández-Ávalos I, Casas-Alvarado A, Domínguez-Oliva A, Lendez P, Ghezzi M. Thermal Imaging as a Method to Indirectly Assess Peripheral Vascular Integrity and Tissue Viability in Veterinary Medicine: Animal Models and Clinical Applications. Animals (Basel) 2023; 14:142. [PMID: 38200873 PMCID: PMC10777915 DOI: 10.3390/ani14010142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 12/24/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024] Open
Abstract
Infrared thermography (IRT) is a technique that indirectly assesses peripheral blood circulation and its resulting amount of radiated heat. Due to these properties, thermal imaging is currently applied in human medicine to noninvasively evaluate peripheral vascular disorders such as thrombosis, thromboembolisms, and other ischemic processes. Moreover, tissular damage (e.g., burn injuries) also causes microvasculature compromise. Therefore, thermography can be applied to determine the degree of damage according to the viability of tissues and blood vessels, and it can also be used as a technique to monitor skin transplant procedures such as grafting and free flaps. The present review aims to summarize and analyze the application of IRT in veterinary medicine as a method to indirectly assess peripheral vascular integrity and its relation to the amount of radiated heat and as a diagnostic technique for tissue viability, degree of damage, and wound care.
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Affiliation(s)
- Daniel Mota-Rojas
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 14389, Mexico
| | - Asahi Ogi
- Department of Neurobiology and Molecular Medicine, IRCCS Fondazione Stella Maris, 56128 Pisa, Italy
| | - Dina Villanueva-García
- Division of Neonatology, Hospital Infantil de México Federico Gómez, Mexico City 06720, Mexico
| | - Ismael Hernández-Ávalos
- Clinical Pharmacology and Veterinary Anesthesia, Biological Sciences Department, FESC, Universidad Nacional Autónoma de México, Cuautitlán 54714, Mexico
| | - Alejandro Casas-Alvarado
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 14389, Mexico
| | - Adriana Domínguez-Oliva
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 14389, Mexico
| | - Pamela Lendez
- Anatomy Area, Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), University Campus, Tandil 7000, Argentina
| | - Marcelo Ghezzi
- Anatomy Area, Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), University Campus, Tandil 7000, Argentina
- Animal Welfare Area, Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), University Campus, Tandil 7000, Argentina
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Kotronoulas A, de Lomana ALG, Einarsdóttir HK, Kjartansson H, Stone R, Rolfsson Ó. Fish Skin Grafts Affect Adenosine and Methionine Metabolism during Burn Wound Healing. Antioxidants (Basel) 2023; 12:2076. [PMID: 38136196 PMCID: PMC10741162 DOI: 10.3390/antiox12122076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 11/23/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
Burn wound healing is a complex process orchestrated through successive biochemical events that span from weeks to months depending on the depth of the wound. Here, we report an untargeted metabolomics discovery approach to capture metabolic changes during the healing of deep partial-thickness (DPT) and full-thickness (FT) burn wounds in a porcine burn wound model. The metabolic changes during healing could be described with six and seven distinct metabolic trajectories for DPT and FT wounds, respectively. Arginine and histidine metabolism were the most affected metabolic pathways during healing, irrespective of burn depth. Metabolic proxies for oxidative stress were different in the wound types, reaching maximum levels at day 14 in DPT burns but at day 7 in FT burns. We examined how acellular fish skin graft (AFSG) influences the wound metabolome compared to other standard-or-care burn wound treatments. We identified changes in metabolites within the methionine salvage pathway, specifically in DPT burn wounds that is novel to the understanding of the wound healing process. Furthermore, we found that AFSGs boost glutamate and adenosine in wounds that is of relevance given the importance of purinergic signaling in regulating oxidative stress and wound healing. Collectively, these results serve to define biomarkers of burn wound healing. These results conclusively contribute to the understanding of the multifactorial mechanism of the action of AFSG that has traditionally been attributed to its structural properties and omega-3 fatty acid content.
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Affiliation(s)
- Aristotelis Kotronoulas
- Center for Systems Biology, Medical Department, University of Iceland, Sturlugata 8, 102 Reykjavik, Iceland
| | | | | | | | - Randolph Stone
- US Army Institute of Surgical Research, JBSA Fort Sam Houston, TX 78234, USA
| | - Óttar Rolfsson
- Center for Systems Biology, Medical Department, University of Iceland, Sturlugata 8, 102 Reykjavik, Iceland
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6
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Imam MS, Alotaibi AAS, Alotaibi NOM, Alosaimi NS, Alotaibi SGM, Abdelrahim MEA. Efficiency of platelet-rich plasma in the management of burn wounds: A meta-analysis. Int Wound J 2023; 21:e14419. [PMID: 37776166 PMCID: PMC10825070 DOI: 10.1111/iwj.14419] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/15/2023] [Accepted: 09/16/2023] [Indexed: 10/01/2023] Open
Abstract
The meta-analysis aimed to assess the efficiency of platelet-rich plasma (PRP) in the management of burn wounds (BWs). Using dichotomous or contentious random- or fixed-effects models, the outcomes of this meta-analysis were examined and the odds ratio (OR) and the mean difference (MD) with 95% confidence intervals (CIs) were computed. Thirteen examinations from 2009 to 2023 were enrolled for the present meta-analysis, including 808 individuals with BWs. PRP had significantly shorter healing time (MD, -5.80; 95% CI, -7.73 to -3.88, p < 0.001), higher healing rate (OR, 3.14; 95% CI, 2.05-4.80, p < 0.001), higher healed area percent (MD, 12.67; 95% CI, 9.79-15.55, p < 0.001) and higher graft take area percent (MD, 4.39; 95% CI, 1.51-7.26, p = 0.003) compared with standard therapy in patients with BW. However, no significant difference was found between PRP and standard therapy in graft take ratio (OR, 1.70; 95% CI, 0.86-3.34, p = 0.13) and infection rate (OR, 0.55; 95% CI, 0.20-1.47, p = 0.23) in patients with BW. The examined data revealed that PRP had a significantly shorter healing time, a higher healing rate, a higher healed area percent and a higher graft take area percent; however, no significant difference was found in graft take ratio or infection rate compared with standard therapy in patients with BW. Yet, attention should be paid to its values since all of the selected examinations had a low sample size and some comparisons had a low number of selected studies.
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Affiliation(s)
- Mohamed S. Imam
- Pharmacy Practice Department, College of PharmacyShaqra UniversityShaqraSaudi Arabia
- Clinical Pharmacy Department, National Cancer InstituteCairo UniversityCairoEgypt
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Beschastnov VV, Egorikhina MN, Tulupov AA, Pogodin IE, Orlinskaya NY, Antoshina VV, Shirokova IY, Ryabkov MG. Immobilization of Bacteriophages in Ex Tempore Hydrogel for the Treatment of Burn Wound Infection. Gels 2023; 9:625. [PMID: 37623080 PMCID: PMC10453372 DOI: 10.3390/gels9080625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/30/2023] [Accepted: 08/01/2023] [Indexed: 08/26/2023] Open
Abstract
The resistance of bacteria to antibiotics is a major problem for anti-bacterial therapy. This problem may be solved by using bacteriophages-viruses that can attack and destroy bacteria, including antibiotic-resistant ones. In this article, the authors compared the efficacy of topical bacteriophage therapy and systemic antibiotic therapy in the treatment of wound infections caused by ESKAPE pathogens in patients with limited (less than 5% of the body surface) full-thickness burns. Patients in the study group (n = 30) were treated with PVA-based hydrogel dressings saturated ex tempore with a bacteriophage suspension characterized by its lytic activity against the bacteria colonizing the wound. Patients in the control group (n = 30) were treated using etiotropic systemic antibiotic therapy, and the wounds were covered with gauze bandages soaked in an aqueous solution of povidone-iodine. An assessment of the decrease in the level of bacterial contamination of the recipient wounds in both groups was conducted after 7 days, and after that, free skin grafting was performed. On day 14 after free skin grafting, patients in both groups underwent incisional biopsy. The study group demonstrated an increase in the indices of proliferative activity (Ki-67), and angiogenesis (CD-31, VEGF) in the area of engraftment of the split-thickness skin grafts. The results indicate that PVA-based hydrogel wound dressings can be used as bacteriophage carriers for local antimicrobial therapy ahead of free skin grafting.
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Affiliation(s)
| | | | | | | | | | | | | | - Maksim G. Ryabkov
- University Clinic, Privolzhsky Research Medical University, Nizhny Novgorod 603155, Russia; (V.V.B.); (M.N.E.); (A.A.T.); (I.E.P.); (N.Y.O.); (V.V.A.); (I.Y.S.)
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Prokopczuk FI, Im H, Campos-Gomez J, Orihuela CJ, Martínez E. Engineered Superinfective Pf Phage Prevents Dissemination of Pseudomonas aeruginosa in a Mouse Burn Model. mBio 2023; 14:e0047223. [PMID: 37039641 PMCID: PMC10294672 DOI: 10.1128/mbio.00472-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 03/23/2023] [Indexed: 04/12/2023] Open
Abstract
Pf is a filamentous bacteriophage integrated in the chromosome of most clinical isolates of Pseudomonas aeruginosa. Under stress conditions, mutations occurring in the Pf genome result in the emergence of superinfective variants of Pf (SI-Pf) that are capable of circumventing phage immunity; therefore, SI-Pf can even infect Pf-lysogenized P. aeruginosa. Here, we identified specific mutations located between the repressor and the excisionase genes of Pf4 phage in the P. aeruginosa PAO1 strain that resulted in the emergence of SI-Pf. Based on these findings, we genetically engineered an SI-Pf (eSI-Pf) and tested it as a phage therapy tool for the treatment of life-threatening burn wound infections caused by PAO1. In validation experiments, eSI-Pf was able to infect PAO1 grown in a lawn as well as biofilms formed in vitro on polystyrene. eSI-Pf also infected PAO1 present in burned skin wounds on mice but was not capable of maintaining a sustained reduction in bacterial burden beyond 24 h. Despite not lowering bacterial burden in burned skin tissue, eSI-Pf treatment completely abolished the capability of P. aeruginosa to disseminate from the burn site to internal organs. Over the course of 10 days, this resulted in bacterial clearance and survival of all treated mice. We subsequently determined that eSI-Pf induced a small-colony variant of P. aeruginosa that was unable to disseminate systemically. This attenuated phenotype was due to profound changes in virulence determinant production and altered physiology. Our results suggest that eSI-Pf has potential as a phage therapy against highly recalcitrant antimicrobial-resistant P. aeruginosa infections of burn wounds. IMPORTANCE Pseudomonas aeruginosa is a major cause of burn-related infections. It is also the most likely bacterial infection to advance to sepsis and result in burn-linked death. Frequently, P. aeruginosa strains isolated from burn patients display a multidrug-resistant phenotype necessitating the development of new therapeutic strategies and prophylactic treatments. In this context, phage therapy using lytic phages has demonstrated exciting potential in the control P. aeruginosa infection. However, lytic phages can present a set of drawbacks during phage therapy, including the induction of bacterial resistance and limited bacteria-phage interactions in vivo. Here, we propose an alternative approach to interfere with P. aeruginosa pathogenesis in a burn infection model, i.e., by using an engineered superinfective filamentous phage. Our study demonstrates that treatment with the engineered Pf phage can prevent sepsis and death in a burn mouse model.
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Affiliation(s)
- Federico I. Prokopczuk
- Department of Microbiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Hansol Im
- Department of Microbiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Javier Campos-Gomez
- Cystic Fibrosis Research Center, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Carlos J. Orihuela
- Department of Microbiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Eriel Martínez
- Department of Microbiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Minsart M, Deroose N, Parmentier L, Van Vlierberghe S, Mignon A, Dubruel P. Fine-Tuning the Endcap Chemistry of Acrylated Poly(Ethylene Glycol)-Based Hydrogels for Efficient Burn Wound Exudate Management. Macromol Biosci 2023; 23:e2200341. [PMID: 36404646 DOI: 10.1002/mabi.202200341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/04/2022] [Indexed: 11/22/2022]
Abstract
Most commercial dressings with moderate to high exudate uptake capacities are mechanically weaker and/or require a secondary dressing. The current research article focuses on the development of hydrogel-based wound dressings combining mechanical strength with high exudate absorption capacities using acrylate-endcapped urethane-based precursors (AUPs). AUPs with varying poly(ethylene glycol) backbone molar masses (10 and 20 kg mol-1 ) and endcap chemistries are successfully synthesized in toluene, subsequently processed into UV-cured hydrogel sheets and are benchmarked against several commercial wound dressings (Hydrosorb, Kaltostat, and Mepilex Ag). The AUP materials show high gel fractions (>90%) together with strong swelling degrees in water, phosphate buffered saline and simulated wound fluid (12.7-19.6 g g-1 ), as well as tunable mechanical properties (e.g., Young's modulus: 0.026-0.061 MPa). The AUPs have significantly (p < 0.05) higher swelling degrees than the tested commercial dressings, while also being mechanically resistant. The elasticity of the synthesized materials leads to an increased resistance against fatigue. The di- and hexa-acrylated AUPs show excellent in vitro biocompatibility against human foreskin fibroblasts, as evidenced by indirect MTS assays and live/dead cell assays. In conclusion, the processed AUP materials demonstrate high potential for wound healing application and can even compete with commercially available dressings.
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Affiliation(s)
- Manon Minsart
- Polymer Chemistry & Biomaterials Research Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, Building S4-bis, Ghent, 9000, Belgium
| | - Nicolas Deroose
- Polymer Chemistry & Biomaterials Research Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, Building S4-bis, Ghent, 9000, Belgium
| | - Laurens Parmentier
- Polymer Chemistry & Biomaterials Research Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, Building S4-bis, Ghent, 9000, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry & Biomaterials Research Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, Building S4-bis, Ghent, 9000, Belgium
| | - Arn Mignon
- Smart Polymeric Biomaterials Research Group, Biomaterials and Tissue Engineering (SIEM) @ Campus Group T Leuven, Andreas Vesaliusstraat 13, Leuven, 3000, Belgium
| | - Peter Dubruel
- Polymer Chemistry & Biomaterials Research Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281, Building S4-bis, Ghent, 9000, Belgium
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10
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Schneider I, Calcagni M, Buschmann J. Adipose-derived stem cells applied in skin diseases, wound healing and skin defects: a review. Cytotherapy 2023; 25:105-119. [PMID: 36115756 DOI: 10.1016/j.jcyt.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/17/2022] [Accepted: 08/11/2022] [Indexed: 01/18/2023]
Abstract
Adipose tissue presents a comparably easy source for obtaining stem cells, and more studies are increasingly investigating the therapeutic potential of adipose-derived stem cells. Wound healing, especially in chronic wounds, and treatment of skin diseases are some of the fields investigated. In this narrative review, the authors give an overview of some of the latest studies concerning wound healing as well as treatment of several skin diseases and concentrate on the different forms of application of adipose-derived stem cells.
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Affiliation(s)
| | - Maurizio Calcagni
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Johanna Buschmann
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland.
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Qiao Y, Zhang Q, Peng Y, Qiao X, Yan J, Wang B, Zhu Z, Li Z, Zhang Y. Effect of stem cell treatment on burn wounds: A systemic review and a meta-analysis. Int Wound J 2023; 20:8-17. [PMID: 35560869 PMCID: PMC9797938 DOI: 10.1111/iwj.13831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 04/19/2022] [Accepted: 04/21/2022] [Indexed: 01/07/2023] Open
Abstract
A meta-analysis was performed to evaluate the effect of stem cells treatment in managing burn wounds. A systematic literature search up to March 2022 incorporated 24 studies reported between 2013 and 2021 including 400 animals with burn wounds at the beginning of the study; 211 were using stem cells treatment, and 189 controlled. Statistical tools like the contentious method were used within a random or fixed-influence model to establish the mean difference (MD) with 95% confidence intervals (CIs) to evaluate the influence of stem cells treatment in managing burn wounds. Stem cells treatment had a significantly higher burn wound healing rate (MD, 15.18; 95% CI, 11.29-19.07, P < .001), higher blood vessel number (MD, 12.28; 95% CI, 10.06-14.51, P < .001), higher vascular endothelial growth factor (MD, 10.24; 95% CI, 7.19-13.29, P < .001), lower interleukin-1 level (MD, -98.48; 95% CI, -155.33 to -41.63, P < .001), and lower tumour necrosis factor α level (MD, -28.71; 95% CI, -46.65 to -10.76, P < .002) compared with control in animals' models with burn wounds. Stem cells treatment had a significantly higher burn wound healing rate, higher blood vessel number, higher vascular endothelial growth factor, lower interleukin-1 level, and lower tumour necrosis factor α level compared with control in animals' models with burn wounds. Further studies are required to validate these findings.
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Affiliation(s)
- Yating Qiao
- Department of Gastrointestinal SurgeryAffiliated Hospital of Hebei UniversityBoadingChina
| | - Qingrong Zhang
- Department of Burn and Plastic SurgeryAffiliated Hospital of Nantong UniversityNantongChina
| | - Ying Peng
- Department of Burn and Plastic SurgeryAffiliated Hospital of Nantong UniversityNantongChina
| | | | - Jun Yan
- Department of Burn and Plastic SurgeryAffiliated Hospital of Nantong UniversityNantongChina
| | - Bolin Wang
- Department of Burn and Plastic SurgeryAffiliated Hospital of Nantong UniversityNantongChina
| | - Zhihan Zhu
- Department of Burn and Plastic SurgeryAffiliated Hospital of Nantong UniversityNantongChina
| | - Zihan Li
- Department of Burn and Plastic SurgeryAffiliated Hospital of Nantong UniversityNantongChina
| | - Yi Zhang
- Department of Burn and Plastic SurgeryAffiliated Hospital of Nantong UniversityNantongChina
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Mazurek Ł, Szudzik M, Rybka M, Konop M. Silk Fibroin Biomaterials and Their Beneficial Role in Skin Wound Healing. Biomolecules 2022; 12:biom12121852. [PMID: 36551280 PMCID: PMC9775069 DOI: 10.3390/biom12121852] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
The skin, acting as the outer protection of the human body, is most vulnerable to injury. Wound healing can often be impaired, leading to chronic, hard-to-heal wounds. For this reason, searching for the most effective dressings that can significantly enhance the wound healing process is necessary. In this regard, silk fibroin, a protein derived from silk fibres that has excellent properties, is noteworthy. Silk fibroin is highly biocompatible and biodegradable. It can easily make various dressings, which can be loaded with additional substances to improve healing. Dressings based on silk fibroin have anti-inflammatory, pro-angiogenic properties and significantly accelerate skin wound healing, even compared to commercially available wound dressings. Animal studies confirm the beneficial influence of silk fibroin in wound healing. Clinical research focusing on fibroin dressings is also promising. These properties make silk fibroin a remarkable natural material for creating innovative, simple, and effective dressings for skin wound healing. In this review, we summarise the application of silk fibroin biomaterials as wound dressings in full-thickness, burn, and diabetic wounds in preclinical and clinical settings.
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Phatanodom K, Angthong C. Silver Nanoparticle-Based Dressings for Various Wounds: Benefits and Adverse Effects. Pol Przegl Chir 2022; 95:1-5. [PMID: 36808064 DOI: 10.5604/01.3001.0016.1101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Silver nanoparticles (AgNP) are a novel therapeutic approach to wound dressings because of their antibacterial properties. Silver has been used throughout history for many purposes. However, evidence-based information about the benefits of AgNP-based wound dressings and potential adverse effects is still required. This study is to comprehensively review the benefits and complications of AgNP-based wound dressings for different wound types and address the knowledge gaps. MATERIAL AND METHODS We collected and reviewed the relevant literature from available sources. RESULTS AgNP-based dressings have antimicrobial activity and promote healing with only minor complications, making them suitable for several types of wounds. However, we could not identify any reports on AgNP-based wound dressings for common acute traumatic wounds, such as lacerations and abrasions; this includes comparative studies of AgNP-based and conventional wound dressings for such wound types. CONCLUSIONS AgNP-based dressings benefit traumatic, cavity, dental, and burn wounds with only minor complications. However, further studies are needed to discern their benefits for specific traumatic wound types.
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Affiliation(s)
- Korapin Phatanodom
- Faculty of Medicine, King Mongkut's Institute of Technology Ladkrabang Bangkok, Thailand
| | - Chayanin Angthong
- Faculty of Medicine, King Mongkut's Institute of Technology Ladkrabang Bangkok, Thailand
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Ndlovu SP, Fonkui TY, Ndinteh DT, Aderibigbe BA. Dissolvable wound dressing loaded with silver nanoparticles together with ampicillin and ciprofloxacin. Ther Deliv 2022. [PMID: 35924677 DOI: 10.4155/tde-2021-0087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Aim: The current study is focused on the development of water-soluble wound dressings, which are potential dressings for the treatment of burn wounds. Materials & methods: Sodium alginate-based dissolvable wound dressings were prepared and loaded with silver nanoparticles and various antibiotics (ampicillin and ciprofloxacin) followed by characterization and in vitro antibacterial studies. Results & conclusions: The prepared sodium alginate-based dissolvable wound dressing exhibited good porosity, water uptake and moisture content, promising antibacterial activity, high absorption capacity of simulated wound exudates, excellent water vapor transmission rate in the range of 2000 to 5000 g/m2 day-1, sustained drug-release profiles and water solubility. The wound dressings were active against Proteus mirabilis, Staphylococcus aureus, Proteus vulgaris, Escherichia coli and Klebsiella aeruginosa strains of bacteria. The results obtained revealed the wound dressing as potential wound dressings for burn wounds and sensitive skin.
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15
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Derakhshani A, Hesaraki S, Nezafati N, Azami M. Wound closure, angiogenesis and antibacterial behaviors of tetracalcium phosphate/hydroxyethyl cellulose/hyaluronic acid/gelatin composite dermal scaffolds. J Biomater Sci Polym Ed 2022; 33:605-626. [PMID: 34844507 DOI: 10.1080/09205063.2021.2008786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Polymeric and tetracalcium phosphate (TTCP)-containing polymeric scaffolds were fabricated using a freeze-drying technique, with a homogenous solution of hydroxyethyl cellulose (HEC)/hyaluronic acid (HA)/gelatin (G) or suspension of 15 or 20% TTCP) particles in HEC/HA/G solution. The morphology, phase composition, chemical bands, and swelling behavior of the scaffold were determined. In vitro fibroblast cell viability and migration potential of the scaffolds were determined by MTT, live/dead staining, and scratch assay for wound healing. The in vivo chick embryo angiogenesis test was also carried out. Finally, the initial antibacterial activity of the scaffolds was determined using Staphylococcus aureus. The scaffolds exhibited an enormous porous structure in which the size of pores increased by the presence of TTCP particles. While the polymeric scaffold was amorphous, the formation of low crystalline hydroxyapatite phase and the initial TTCP particles was determined in the composition of TTCP-added scaffolds. TTCP increased swelling behavior of the polymeric scaffold in PBS. The results demonstrated that the amount of TTCP was a crucial factor in cell life. A high concentration of TTCP could restrict cell viability, although all the scaffolds were nontoxic. The scratch assessments determined better cell migration and wound closure in treating with TTCP-containing scaffolds so that after 24 h, a wound closure of 100% was observed. Furthermore, TTCP-incorporated scaffolds significantly improved the angiogenesis, in the chick embryo test. The presence of TTCP had a significant effect on reducing the bacterial activity and 20% TTCP-containing scaffold exhibited better antibacterial activity than the others.
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Affiliation(s)
- Atefeh Derakhshani
- Biomaterials Group, Department of Nanotechnology & Advanced Materials, Materials and Energy Research Center, Karaj, Iran
| | - Saeed Hesaraki
- Biomaterials Group, Department of Nanotechnology & Advanced Materials, Materials and Energy Research Center, Karaj, Iran
| | - Nader Nezafati
- Biomaterials Group, Department of Nanotechnology & Advanced Materials, Materials and Energy Research Center, Karaj, Iran
| | - Mahmoud Azami
- Department of Tissue Engineering, Tehran University of Medical Sciences, Tehran, Iran
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16
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Chang CW, Lai F, Christian M, Chen YC, Hsu C, Chen YS, Chang DH, Roan TL, Yu YC. Deep Learning-Assisted Burn Wound Diagnosis: Diagnostic Model Development Study. JMIR Med Inform 2021; 9:e22798. [PMID: 34860674 PMCID: PMC8686480 DOI: 10.2196/22798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 12/19/2020] [Accepted: 10/15/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Accurate assessment of the percentage total body surface area (%TBSA) of burn wounds is crucial in the management of burn patients. The resuscitation fluid and nutritional needs of burn patients, their need for intensive unit care, and probability of mortality are all directly related to %TBSA. It is difficult to estimate a burn area of irregular shape by inspection. Many articles have reported discrepancies in estimating %TBSA by different doctors. OBJECTIVE We propose a method, based on deep learning, for burn wound detection, segmentation, and calculation of %TBSA on a pixel-to-pixel basis. METHODS A 2-step procedure was used to convert burn wound diagnosis into %TBSA. In the first step, images of burn wounds were collected from medical records and labeled by burn surgeons, and the data set was then input into 2 deep learning architectures, U-Net and Mask R-CNN, each configured with 2 different backbones, to segment the burn wounds. In the second step, we collected and labeled images of hands to create another data set, which was also input into U-Net and Mask R-CNN to segment the hands. The %TBSA of burn wounds was then calculated by comparing the pixels of mask areas on images of the burn wound and hand of the same patient according to the rule of hand, which states that one's hand accounts for 0.8% of TBSA. RESULTS A total of 2591 images of burn wounds were collected and labeled to form the burn wound data set. The data set was randomly split into training, validation, and testing sets in a ratio of 8:1:1. Four hundred images of volar hands were collected and labeled to form the hand data set, which was also split into 3 sets using the same method. For the images of burn wounds, Mask R-CNN with ResNet101 had the best segmentation result with a Dice coefficient (DC) of 0.9496, while U-Net with ResNet101 had a DC of 0.8545. For the hand images, U-Net and Mask R-CNN had similar performance with DC values of 0.9920 and 0.9910, respectively. Lastly, we conducted a test diagnosis in a burn patient. Mask R-CNN with ResNet101 had on average less deviation (0.115% TBSA) from the ground truth than burn surgeons. CONCLUSIONS This is one of the first studies to diagnose all depths of burn wounds and convert the segmentation results into %TBSA using different deep learning models. We aimed to assist medical staff in estimating burn size more accurately, thereby helping to provide precise care to burn victims.
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Affiliation(s)
- Che Wei Chang
- Graduate Institute of Biomedical Electronics & Bioinformatics, National Taiwan University, Taipei, Taiwan.,Division of Plastic and Reconstructive Surgery, Department of Surgery, Far Eastern Memorial Hospital, New Taipei, Taiwan
| | - Feipei Lai
- Graduate Institute of Biomedical Electronics & Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Mesakh Christian
- Department of Computer Science & Information Engineering, National Taiwan University, Taipei, Taiwan
| | - Yu Chun Chen
- Department of Computer Science & Information Engineering, National Taiwan University, Taipei, Taiwan
| | - Ching Hsu
- Graduate Institute of Biomedical Electronics & Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Yo Shen Chen
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Far Eastern Memorial Hospital, New Taipei, Taiwan
| | - Dun Hao Chang
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Far Eastern Memorial Hospital, New Taipei, Taiwan.,Department of Information Management, Yuan Ze University, Chung-Li, Taiwan
| | - Tyng Luen Roan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Far Eastern Memorial Hospital, New Taipei, Taiwan
| | - Yen Che Yu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Far Eastern Memorial Hospital, New Taipei, Taiwan
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Barry A, Panmanee W, Hassett DJ, Satish L. AB569, a Novel, Topical Bactericidal Gel Formulation, Kills Pseudomonas aeruginosa and Promotes Wound Healing in a Murine Model of Burn Wound Infection. Infect Immun 2021; 89:e0033621. [PMID: 34424744 DOI: 10.1128/IAI.00336-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Cutaneous thermal injuries from burns/explosives are a major cause of morbidity and mortality and represent a monumental burden on our current health care system. Injury severity is predominantly due to potentially lethal sepsis caused by multidrug-resistant (MDR) bacteria such as Pseudomonas aeruginosa (MDR-PA). Thus, there is a critical need to develop novel and effective antimicrobials for the (i) prevention, (ii) treatment, and (iii) healing of such wounds that are complicated by MDR-P. aeruginosa and other bacterial infections. AB569 is a novel bactericidal tandem consisting of acidified NaNO2 (A-NO2-) and Na2-EDTA. Here, we first show that AB569 acts synergistically to kill all human burn wound strains of P. aeruginosa in vitro. This was found to be due, in part, to the generation of A-NO2--mediated nitric oxide (NO) formation coupled with the metal chelating properties of Na2-EDTA. Using a murine scald burn wound model of P. aeruginosa infection, an AB569-Solosite gel formulation eradicated all bacteria. Futher, we also demonstrate enhanced AB569-mediated wound healing by not only accelerating wound contraction, but also by reducing levels of the proinflammatory cytokines interleukin-6 (IL-6) and IL-1β while increasing the levels of anti-inflammatory cytokine, IL-10, and granulocyte-colony-stimulating factor (G-CSF). We also observed better epidermal restoration in AB569-treated wounds. Taken together, we conclude that this study provides solid foundational evidence that AB569 can be used topically to treat highly problematic dermal insults, including wound, burn, blast, and likely, diabetic infections in civilian and military populations, and help relieve the economical burden that MDR organisms have on the global health care system.
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18
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Kennedy GT, Kagawa K, Rowland R, Ponticorvo A, Tanida J, Durkin AJ. Spatial frequency domain imager based on a compact multiaperture camera: testing and feasibility for noninvasive burn severity assessment. J Biomed Opt 2021; 26:JBO-210116-APPEALR. [PMID: 34387050 PMCID: PMC8358666 DOI: 10.1117/1.jbo.26.8.086001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 07/26/2021] [Indexed: 05/20/2023]
Abstract
SIGNIFICANCE Spatial frequency domain imaging (SFDI) is a wide-field imaging technique that provides quantitative maps of tissue optical properties. We describe a compact SFDI imager that employs a multispectral compound-eye camera. This design enables simultaneous image acquisition at multiple wavelengths. Such a device has potential for application for quantitative evaluation of superficial tissues by nonspecialists in low-resource settings. AIM The aim of this work was to develop a compact SFDI imager for widefield imaging of in-vivo tissue optical properties and verify its ability to measure optical properties of tissue-simulating phantoms and in a preclinical model of burn wounds. APPROACH This compound-eye imager was constructed using a CMOS sensor subdivided into multiple regions, each having a bandpass filter and objective lens. The ability of the instrument to image optical properties was compared with (1) a commercial SFDI imager and (2) a laboratory-based system. Initial validation of ability to accurately characterize optical properties was performed using a tissue-simulating optical phantom. It was then applied to an established murine model of thermal contact burn severity. In-vivo measurements of the optical properties of rat skin were performed before and after the application of burns. Histology was used to verify burn severity. RESULTS Measurements of the tissue-simulating phantom optical properties made using the compound-eye imager agree with measurements made using the two comparison SFDI devices. For the murine burn model, the burns showed a decrease in the reduced scattering coefficient at all measurement wavelengths compared with preburn measurements at the same locations. This is consistent with previously reported changes in scattering that occur in full-thickness burns. CONCLUSION We demonstrate the potential for SFDI to be translated into compact form factor using a compound-eye camera that is capable of obtaining multiple wavelengths channels simultaneously.
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Affiliation(s)
- Gordon T Kennedy
- University of California, Irvine, Beckman Laser Institute and Medical Clinic, Irvine, California, United States
| | - Keiichiro Kagawa
- Shizuoka University, Research Institute of Electronics, Shizuoka, Japan
| | - Rebecca Rowland
- University of California, Irvine, Beckman Laser Institute and Medical Clinic, Irvine, California, United States
| | - Adrien Ponticorvo
- University of California, Irvine, Beckman Laser Institute and Medical Clinic, Irvine, California, United States
| | - Jun Tanida
- Osaka University, Graduate School of Information Science and Technology, Osaka, Japan
| | - Anthony J Durkin
- University of California, Irvine, Beckman Laser Institute and Medical Clinic, Irvine, California, United States
- University of California, Irvine, Department of Biomedical Engineering, Irvine, California, United States
- Address all correspondence to Anthony Durkin,
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Abstract
OBJECTIVE The purpose of this study was to identify the potential of resveratrol in inhibiting the growth and production of two enzymes, hyaluronidase and protease, in Stenotrophomonas maltophilia, which has become a burn wound pathogen of great significance. METHOD Stenotrophomonas maltophilia (ATCC 17666) was cultured in nutrient broth and the microbial load was standardised to 0.5 McFarland standard at 600nm. The study included antimicrobial assays (well diffusion and resazurin dye binding method), hyaluronidase expression regulation assay (hyaluronic acid hydrolysis assay and turbidity assay) and protease expression regulation assay (casein hydrolysis assay and determination of specific activity of protease using tyrosine standard). RESULTS The minimum inhibitory concentration (MIC) of resveratrol against Stenotrophomonas maltophilia was found to be 125µg/ml. Hyaluronidase production in the organism treated with resveratrol was found to be half that in the untreated organism. The specific activity of protease produced by the organism treated with resveratrol was found to be one-quarter that in the untreated organism, as analysed by the tyrosine standard estimation protocol. CONCLUSION Resveratrol was found to be a potent compound to treat Stenotrophomonas maltophilia infections. In addition to the antimicrobial and enzyme-regulatory properties of resveratrol, it also shows anti-oxidant and anti-inflammatory properties. This finding has great scope clinically as resveratrol may prove to be an ideal drug to treat burn wound infections.
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Affiliation(s)
- Sraddha S Bharadwaj
- Department of Biomedical Sciences, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Lalitha Vaidyanathan
- Department of Biomedical Sciences, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
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20
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Ramalingam R, Dhand C, Mayandi V, Leung CM, Ezhilarasu H, Karuppannan SK, Prasannan P, Ong ST, Sunderasan N, Kaliappan I, Kamruddin M, Barathi VA, Verma NK, Ramakrishna S, Lakshminarayanan R, Arunachalam KD. Core-Shell Structured Antimicrobial Nanofiber Dressings Containing Herbal Extract and Antibiotics Combination for the Prevention of Biofilms and Promotion of Cutaneous Wound Healing. ACS Appl Mater Interfaces 2021; 13:24356-24369. [PMID: 34024104 DOI: 10.1021/acsami.0c20642] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Burn wounds are susceptible to microbial invasion from both resident and exogenous bacteria, which becomes a critical public health issue and causes substantial economic burden. There is a perceived demand to produce new antimicrobial wound dressings that hinder bacterial colonization while accelerating the healing process and hence would provide an improved standard of care for patients. Since ancient times, herbal extracts from medicinally important plants have extensively been used for treating burn injuries. This work reports the utility of electrospun nanofibers containing plant extracts and antibiotics combination as a multifunctional scaffold for treating second-degree burns. First, we determined the various components of plant extracts from Gymnema sylvestre by two different processing methods and their synergism with minocycline antibiotics. Then, we prepared core-shell nanofibrous dressings with poly-ε-caprolactone/gelatin laden with minocycline hydrochloride as a shell and gelatin infused with G. sylvestre extracts (ultrasound-assisted extracts and cold macerated extracts) as the core using coaxial electrospinning. The electrospun nanofibers displayed a smooth, continuous, and bead-free morphology with adequate wettability. The presence of extract components in the core-shell nanofibers resulted in enhanced mechanical properties when compared to pristine mats. The core-shell structures resulted in sustained release of the bioactive components when compared to nanofiber blends. Core-shell nanofiber mats containing plant extracts and antibiotic combinations displayed potent antimicrobial and antibiofilm properties while promoting the spread and proliferation of skin cells when compared to pristine mats. In a porcine model of cutaneous second-degree burns, we showed that wounds treated with the antimicrobial dressing improved re-epithelialization and collagen organization in comparison to untreated wounds.
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Affiliation(s)
- Raghavendra Ramalingam
- Center for Environmental Nuclear Research, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu, Tamil Nadu 603203, India
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu, Tamil Nadu 603203, India
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering, 2 Engineering Drive 3, National University of Singapore, 117576, Singapore
| | - Chetna Dhand
- Ocular Infections & Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, 169856, Singapore
- Industrial Waste Utilization, Nano and Biomaterials, CSIR-Advanced Materials and Processes Research Institute (CSIR-AMPRI), Bhopal, Madhya Pradesh 462026, India
| | - Venkatesh Mayandi
- Ocular Infections & Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, 169856, Singapore
- School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Chak Ming Leung
- Department of Biomedical Engineering, National University of Singapore, 117581, Singapore
- NUS Graduate School for Integrative Sciences & Engineering, National University of Singapore, 117456, Singapore
| | - Hariharan Ezhilarasu
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering, 2 Engineering Drive 3, National University of Singapore, 117576, Singapore
| | - Sathish Kumar Karuppannan
- Center for Environmental Nuclear Research, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu, Tamil Nadu 603203, India
| | - Praseetha Prasannan
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11 Mandalay Road, 308232, Singapore
| | - Seow Theng Ong
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11 Mandalay Road, 308232, Singapore
| | - Nandhini Sunderasan
- Interdiscipilinary Institute of Indian System of Medicine, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu (Dt), Tamil Nadu 603203, India
| | - Ilango Kaliappan
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu (Dt), Tamil Nadu 603203, India
| | - Mohammed Kamruddin
- Materials Physics Division, Material Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu 603102, India
| | - Veluchamy Amutha Barathi
- Ocular Infections & Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, 169857, Singapore
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road, NUHS Tower Block, Level 7, 119228, Singapore
| | - Navin Kumar Verma
- Ocular Infections & Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, 169856, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11 Mandalay Road, 308232, Singapore
- Skin Research Institute of Singapore, Clinical Sciences Building, 11 Mandalay Road, 308232, Singapore
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering, 2 Engineering Drive 3, National University of Singapore, 117576, Singapore
| | - Rajamani Lakshminarayanan
- Ocular Infections & Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, 169857, Singapore
- Department of Pharmacy, National University of Singapore, 18 Science Drive, 117543, Singapore
| | - Kantha Deivi Arunachalam
- Center for Environmental Nuclear Research, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu, Tamil Nadu 603203, India
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Schulz A, Fuchs P, Heitzmann W, Kanho C, Schiefer J. Our Initial Experience In The Customized Treatment Of Donor Site And Burn Wounds With A New Nanofibrous Temporary Epidermal Layer. Ann Burns Fire Disasters 2021; 34:58-66. [PMID: 34054388 PMCID: PMC8126369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 08/11/2020] [Indexed: 06/12/2023]
Abstract
Recently, electrospinning technology has gained increasing attention for wound care. SpinCare™ electrospun polymer nanofibrous temporary epidermal layer is one of the latest developments in the market. Our objective was to explore the potential use of the new SpinCare™ system for treating burns and wounds. We conducted a single-center prospective observational trial, treating 10 patients with superficial to partial thickness wounds including burn wounds with a nanofibrous dressing. Treatment was evaluated, including procedures, place of injury, treatment times, ease of use etc. Ten superficial to deep dermal wounds were treated successfully. Inexperienced users learned the handling of the device quickly. Covering difficult-to-access wound surfaces was challenging. One leading problem is that the product is nearly opaque once applied on the moist wound. We introduced a standardized 3-day treatment protocol. After application, wounds were covered with a silicon layer for 2 days. The nanofibrous dressing appeared to be suitable following enzymatic debridement in burn wounds. Because there is a risk of wounds drying out under the dressing, the application should probably be limited to superficial and partial thickness wounds if not combined with other treatment options. The electrospun polymer nanofibrous temporary epidermal layer shows promising results in the treatment of superficial to partial thickness wounds including burns. However, minor improvements might help to optimize its usage and thus take full advantage of all existing treatment options.
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Affiliation(s)
- A. Schulz
- Alexandra Schulz MD
Department of Plastic Surgery, Hand Surgery, Burn Center, University of Witten/Herdecke, Cologne-Merheim Medical Center (CMMC)Ostmerheimer Strasse 200, 51109 CologneGermany+49 211 8907 3817+49 211 8907 8314;
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22
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Abstract
Wound management remains a challenge worldwide, although there are several developed wound dressing materials for the management of acute and chronic wounds. The wound dressings that are currently used include hydrogels, films, wafers, nanofibers, foams, topical formulations, transdermal patches, sponges, and bandages. Hydrogels exhibit unique features which make them suitable wound dressings such as providing a moist environment for wound healing, exhibiting high moisture content, or creating a barrier against bacterial infections, and are suitable for the management of exuding and granulating wounds. Biopolymers have been utilized for their development due to their non-toxic, biodegradable, and biocompatible properties. Hydrogels have been prepared from biopolymers such as cellulose and chitosan by crosslinking with selected synthetic polymers resulting in improved mechanical, biological, and physicochemical properties. They were useful by accelerating wound re-epithelialization and also mimic skin structure, inducing skin regeneration. Loading antibacterial agents into them prevented bacterial invasion of wounds. This review article is focused on hydrogels formulated from two biopolymers-chitosan and cellulose-for improved wound management.
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Affiliation(s)
| | - Blessing Atim Aderibigbe
- Department of Chemistry, University of Fort Hare, Alice Campus, Eastern Cape 5700, South Africa;
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23
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Hermeto LC, DeRossi R, Oliveira RJ, Gomes FG, Ferreira WR, Galhardo JA, Möck TBM, Basaglia WVS, Fernandes DM. The efficacy of topical insulin application on rat model with burn wounds treated with adipose-derived stem cells. Int J Burns Trauma 2020; 10:296-306. [PMID: 33500841 PMCID: PMC7811940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 11/30/2020] [Indexed: 06/12/2023]
Abstract
Overall, major burn wounds may require special care and long-term hospitalization as they not only bring complications from the wound itself, but may also compromise the immune system, or even other organs. Previous studies have indicated that topical insulin cream shortened wound closure time in second-degree burns in rats. Transplanted adipose-derived stem cells (AD-MSCs) have been developed as an alternative to treat burns and to accelerate the healing process. The aim of the present study is to investigate the effect of topical insulin gel, associated with AD-MSCs intradermal administration to heal second-degree burn wounds in rat models who were subjected to second-degree dorsal burns. The models were divided into four groups (n = 10 per group): placebo gel (C), topical insulin gel (TI), topical insulin gel and adipose-derived mesenchymal stem cells (TIMSCs) and placebo gel and adipose-derived mesenchymal stem cells (CMSCs). Wounds were assessed on a daily basis and histological evaluations were made on 5 animals from each group on the seventh and fourteenth day. There was a significant macroscopic decrease in burn wound areas in the Control (P = 0.0083), TIMSCs and CMSCs (P = 0.042) groups between the seventh and fourteenth days. The TI treatment did not show any significant change (P > 0.05) throughout this same period. The histological analysis showed significant granulation tissue formation in CMSCs and TIMSCs (P = 0.02235) treatments during the experimental period. According to the results, intradermal administration of allogenic AD-MSCs in experimental second-degree burns for short periods of time in the rat model has contributed to reducing the inflammatory phase duration, improving wound re-epithelialization, tissue granulation and wound contraction, as well as increasing collagen deposition.
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Affiliation(s)
- Larissa C Hermeto
- Veterinary Medicine-Surgery and Anesthesiology Department, Veterinary Medicine and Animal Science School, Federal University of Mato Grosso do SulCampo Grande, Brazil
- Stem Cell Studies, Cell Therapy and Toxicological Genetics Centre, Medical School, Federal University of Mato Grosso do SulBrazil
| | - Rafael DeRossi
- Veterinary Medicine-Surgery and Anesthesiology Department, Veterinary Medicine and Animal Science School, Federal University of Mato Grosso do SulCampo Grande, Brazil
| | - Rodrigo J Oliveira
- Stem Cell Studies, Cell Therapy and Toxicological Genetics Centre, Medical School, Federal University of Mato Grosso do SulBrazil
| | - Felipe G Gomes
- Veterinary Medicine Department, Veterinary Medicine and Animal Science School, Federal University of Mato Grosso do SulCampo Grande, Brazil
| | - Wallison R Ferreira
- Veterinary Medicine Department, Veterinary Medicine and Animal Science School, Federal University of Mato Grosso do SulCampo Grande, Brazil
| | - Juliana A Galhardo
- Veterinary Medicine Department, Veterinary Medicine and Animal Science School, Federal University of Mato Grosso do SulCampo Grande, Brazil
| | - Tessie BM Möck
- Veterinary Medicine Department, Veterinary Medicine and Animal Science School, Federal University of Mato Grosso do SulCampo Grande, Brazil
| | - William VS Basaglia
- Veterinary Medicine Department, Veterinary Medicine and Animal Science School, Federal University of Mato Grosso do SulCampo Grande, Brazil
| | - Diogo M Fernandes
- Veterinary Science Graduate Program, Federal University of Mato Grosso do SulCampo Grande, Brazil
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Khan BA, Ullah S, Khan MK, Uzair B, Menaa F, Braga VA. Fabrication, Physical Characterizations, and In Vitro, In Vivo Evaluation of Ginger Extract-Loaded Gelatin/Poly(Vinyl Alcohol) Hydrogel Films Against Burn Wound Healing in Animal Model. AAPS PharmSciTech 2020; 21:323. [PMID: 33200249 DOI: 10.1208/s12249-020-01866-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 10/29/2020] [Indexed: 12/19/2022] Open
Abstract
Crude ginger has been used to treat wounds since ancient times till nowadays. The present study aimed at designing and characterizing topical hydrogel films loaded with ginger extract for wound healing in animal model. The hydrogel films were prepared using PVA and gelatin. The prepared films were evaluated for FTIR analysis, surface morphology, pH, swelling behavior, in vitro release, and % drug content. The wound-healing activity of the extract-loaded hydrogel films was compared with commercially available Silver Sulfadiazine® cream. The drug was compatible with the selected polymers and indicated the suitability of the selected polymers for preparation of topical hydrogel films. The SEM images clearly indicated porous structure of the prepared hydrogel films. Slight changes were observed in pH, ranging from 4.98 ± 0.079 in the beginning of the study to 4.9 ± 0.58 in the end. The swelling percentage after 8 h was 257.7%. The films released 78.7 ± 1.7% of the drug in 250 min. The percent drug content was 97.78 ± 5% which did not change significantly during the storage period. The hydrogel films showed similar wound-healing activity as compared to the commercial product (p > 0.05; ANOVA), while greater wound-healing activity as compared to the control group (p < 0.05; ANOVA) evidenced by intensive collagen formation in histopathological analysis.
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Guo X, Liu Y, Bera H, Zhang H, Chen Y, Cun D, Foderà V, Yang M. α-Lactalbumin-Based Nanofiber Dressings Improve Burn Wound Healing and Reduce Scarring. ACS Appl Mater Interfaces 2020; 12:45702-45713. [PMID: 32667794 DOI: 10.1021/acsami.0c05175] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Skin wound especially burn injury is a major threat for public health. One of the pursuits in the current wound healing research is to identify new promising biological materials, which can not only promote tissue repair but also reduce scar formation. In this current study, the potentials of α-lactalbumin (ALA), a tryptophan-rich dietary protein acting as a precursor of neurotransmitter serotonin, to promote the burn wound healing and reduce the scar formation were investigated. The ALA was initially electrospun with polycaprolactone (PCL) to accomplish electrospun nanofibrous mats (ENMs), subsequently assessed for their physicochemical attributes and wound healing efficiency on a burn rat model, and then their healing mechanisms at cellular and molecular levels were explored. The results showed that ALA and PCL were physicochemically compatible in ENMs. The average diameter of various nanofibers was within 183-344 nm. Their wettability and mechanical properties could be readily modulated by adjusting the mass ratios of ALA and PCL from 1/9 to 1/2. The selected ENMs exhibited negligible cytotoxicity and satisfactory adhesion to fibroblasts and promoting the proliferation of the fibroblasts. As compared to pristine PCL based ENMs, the composite scaffolds could accelerate the wound healing process and exhibit effects comparable to a marketed wound dressing over 16 days. Moreover, the ALA/PCL based ENMs could increase the synthesis of type I collagen and decrease the expression of α-smooth muscle actin, conferring that the novel wound dressings could reduce the formation of scars. Collectively, this study demonstrates that the ALA is a promising biological material and could promote the regeneration of burn skins with reduced scar formation, when being loaded on ultrafine fibrous scaffolds, mimicking the structure of the natural extra cellular matrix.
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Affiliation(s)
- Xiong Guo
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road No. 103, 110016 Shenyang, China
| | - Yunen Liu
- Department of Emergency Medicine, General Hospital of Northern Theater Command, Laboratory of Rescue Center of Severe Trauma PLA, No. 83 Road, Shenhe District, 110016 Shenyang, China
| | - Hriday Bera
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road No. 103, 110016 Shenyang, China
| | - Haotian Zhang
- Department of Pharmacology, Shenyang Pharmaceutical University, Wenhua Road No. 103, 110016 Shenyang, China
| | - Yang Chen
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road No. 103, 110016 Shenyang, China
| | - Dongmei Cun
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road No. 103, 110016 Shenyang, China
| | - Vito Foderà
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Mingshi Yang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road No. 103, 110016 Shenyang, China
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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Stojko M, Włodarczyk J, Sobota M, Karpeta-Jarząbek P, Pastusiak M, Janeczek H, Dobrzyński P, Starczynowska G, Orchel A, Stojko J, Batoryna O, Olczyk P, Komosińska-Vassev K, Olczyk K, Kasperczyk J. Biodegradable Electrospun Nonwovens Releasing Propolis as a Promising Dressing Material for Burn Wound Treatment. Pharmaceutics 2020; 12:pharmaceutics12090883. [PMID: 32957509 PMCID: PMC7558515 DOI: 10.3390/pharmaceutics12090883] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/10/2020] [Accepted: 09/15/2020] [Indexed: 12/13/2022] Open
Abstract
The selection of dressing is crucial for the wound healing process. Traditional dressings protect against contamination and mechanical damage of an injured tissue. Alternatives for standard dressings are regenerating systems containing a polymer with an incorporated active compound. The aim of this research was to obtain a biodegradable wound dressing releasing propolis in a controlled manner throughout the healing process. Dressings were obtained by electrospinning a poly(lactide-co-glycolide) copolymer (PLGA) and propolis solution. The experiment consisted of in vitro drug release studies and in vivo macroscopic treatment evaluation. In in vitro studies released active compounds, the morphology of nonwovens, chemical composition changes of polymeric material during degradation process, weight loss and water absorption were determined. For in vivo research, four domestic pigs, were used. The 21-day experiment consisted of observation of healing third-degree burn wounds supplied with PLGA 85/15 nonwovens without active compound, with 5 wt % and 10 wt % of propolis, and wounds rinsed with NaCl. The in vitro experiment showed that controlling the molar ratio of lactidyl to glycolidyl units in the PLGA copolymer gives the opportunity to change the release profile of propolis from the nonwoven. The in vivo research showed that PLGA nonwovens with propolis may be a promising dressing material in the treatment of severe burn wounds.
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Affiliation(s)
- Mateusz Stojko
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland; (J.W.); (M.S.); (P.K.-J.); (M.P.); (H.J.); (P.D.); (J.K.)
- Department of Biopharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jedności 8, 41-200 Sosnowiec, Poland; (G.S.); (A.O.)
- Correspondence:
| | - Jakub Włodarczyk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland; (J.W.); (M.S.); (P.K.-J.); (M.P.); (H.J.); (P.D.); (J.K.)
| | - Michał Sobota
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland; (J.W.); (M.S.); (P.K.-J.); (M.P.); (H.J.); (P.D.); (J.K.)
| | - Paulina Karpeta-Jarząbek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland; (J.W.); (M.S.); (P.K.-J.); (M.P.); (H.J.); (P.D.); (J.K.)
| | - Małgorzata Pastusiak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland; (J.W.); (M.S.); (P.K.-J.); (M.P.); (H.J.); (P.D.); (J.K.)
| | - Henryk Janeczek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland; (J.W.); (M.S.); (P.K.-J.); (M.P.); (H.J.); (P.D.); (J.K.)
| | - Piotr Dobrzyński
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland; (J.W.); (M.S.); (P.K.-J.); (M.P.); (H.J.); (P.D.); (J.K.)
| | - Gabriela Starczynowska
- Department of Biopharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jedności 8, 41-200 Sosnowiec, Poland; (G.S.); (A.O.)
| | - Arkadiusz Orchel
- Department of Biopharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jedności 8, 41-200 Sosnowiec, Poland; (G.S.); (A.O.)
| | - Jerzy Stojko
- Department of Toxicology and Bioanalysis, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Ostrogórska 30, 41-200 Sosnowiec, Poland;
| | - Olgierd Batoryna
- Department of Community Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Kasztanowa 2, 41-205 Sosnowiec, Poland; (O.B.); (P.O.)
| | - Paweł Olczyk
- Department of Community Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Kasztanowa 2, 41-205 Sosnowiec, Poland; (O.B.); (P.O.)
| | - Katarzyna Komosińska-Vassev
- Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jedności 8, 41-200 Sosnowiec, Poland; (K.K.-V.); (K.O.)
| | - Krystyna Olczyk
- Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jedności 8, 41-200 Sosnowiec, Poland; (K.K.-V.); (K.O.)
| | - Janusz Kasperczyk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowskiej 34, 41-819 Zabrze, Poland; (J.W.); (M.S.); (P.K.-J.); (M.P.); (H.J.); (P.D.); (J.K.)
- Department of Biopharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jedności 8, 41-200 Sosnowiec, Poland; (G.S.); (A.O.)
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Owda AY, Owda M, Rezgui ND. Synthetic Aperture Radar Imaging for Burn Wounds Diagnostics. Sensors (Basel) 2020; 20:E847. [PMID: 32033414 DOI: 10.3390/s20030847] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 01/31/2020] [Accepted: 02/03/2020] [Indexed: 11/17/2022]
Abstract
The need for technologies to monitor the wound healing under dressing materials has led us to investigate the feasibility of using microwave and millimetre wave radiations due to their sensitivity to water, non- ionising nature, and transparency to dressing materials and clothing. This paper presents synthetic aperture radar (SAR) images obtained from an active microwave and millimetre wave scanner operating over the band 15–40 GHz. Experimental images obtained from porcine skin samples with the presence of dressing materials and after the application of localised heat treatments reveal that SAR images can be used for diagnosing burns and for potentially monitoring the healing under dressing materials. The experimental images were extracted separately from the amplitude and phase measurements of the input reflection coefficient (S11). The acquired images indicate that skin and burns can be detected and observed through dressing materials as well as features of the skin such as edges, irregularities, bends, burns, and variation in the reflectance of the skin. These unique findings enable a microwave and millimetre-wave scanner to be used for evaluating the wound healing progress under dressing materials without their often-painful removal: a capability that will reduce the cost of healthcare, distress caused by long waiting hours, and the healthcare interventional time.
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Heeman W, Steenbergen W, van Dam GM, Boerma EC. Clinical applications of laser speckle contrast imaging: a review. J Biomed Opt 2019; 24:1-11. [PMID: 31385481 PMCID: PMC6983474 DOI: 10.1117/1.jbo.24.8.080901] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/02/2019] [Indexed: 05/02/2023]
Abstract
When a biological tissue is illuminated with coherent light, an interference pattern will be formed at the detector, the so-called speckle pattern. Laser speckle contrast imaging (LSCI) is a technique based on the dynamic change in this backscattered light as a result of interaction with red blood cells. It can be used to visualize perfusion in various tissues and, even though this technique has been extensively described in the literature, the actual clinical implementation lags behind. We provide an overview of LSCI as a tool to image tissue perfusion. We present a brief introduction to the theory, review clinical studies from various medical fields, and discuss current limitations impeding clinical acceptance.
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Affiliation(s)
- Wido Heeman
- University of Groningen, Faculty Campus Fryslân, Leeuwarden, The Netherlands
- University Medical Centre Groningen, Department of Surgery, Optical Molecular Imaging Groningen, Groningen, The Netherlands
- LIMIS Development BV, Leeuwarden, The Netherlands
| | - Wiendelt Steenbergen
- University of Twente, Techmed Center, Faculty of Science and Technology, Biomedical Photonic Imaging Group, Enschede, The Netherlands
| | - Gooitzen M. van Dam
- University Medical Centre Groningen, Department of Surgery, Optical Molecular Imaging Groningen, Groningen, The Netherlands
| | - E. Christiaan Boerma
- Medical Centre Leeuwarden, Department of Intensive Care, Leeuwarden, The Netherlands
- Address all correspondence to E. Christiaan Boerma, E-mail:
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Patel KK, Surekha DB, Tripathi M, Anjum MM, Muthu MS, Tilak R, Agrawal AK, Singh S. Antibiofilm Potential of Silver Sulfadiazine-Loaded Nanoparticle Formulations: A Study on the Effect of DNase-I on Microbial Biofilm and Wound Healing Activity. Mol Pharm 2019; 16:3916-3925. [PMID: 31318574 DOI: 10.1021/acs.molpharmaceut.9b00527] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Biofilm resistance is one of the severe complications associated with chronic wound infections, which impose extreme microbial tolerance against antibiotic therapy. Interestingly, deoxyribonuclease-I (DNase-I) has been empirically proved to be efficacious in improving the antibiotic susceptibility against biofilm-associated infections. DNase-I hydrolyzes the extracellular DNA, a key component of the biofilm responsible for the cell adhesion and strength. Moreover, silver sulfadiazine, a frontline therapy in burn wound infections, exhibits delayed wound healing due to fibroblast toxicity. In this study, a chitosan gel loaded with solid lipid nanoparticles of silver sulfadiazine (SSD-SLNs) and supplemented with DNase-I has been developed to reduce the fibroblast cytotoxicity and overcome the biofilm-imposed resistance. The extensive optimization using the Box-Behnken design (BBD) resulted in the formation of SSD-SLNs with a smooth surface as confirmed by scanning electron microscopy and controlled release (83%) for up to 24 h. The compatibility between the SSD and other formulation excipients was confirmed by Fourier transform infrared, differential scanning calorimetry, and powder X-ray diffraction studies. Developed SSD-SLNs in combination with DNase-I inhibited around 96.8% of biofilm of Pseudomonas aeruginosa as compared to SSD with DNase-I (82.9%). In line with our hypothesis, SSD-SLNs were found to be less toxic (cell viability 90.3 ± 3.8% at 100 μg/mL) in comparison with SSD (Cell viability 76.9 ± 4.2%) against human dermal fibroblast cell line. Eventually, the results of the in vivo wound healing study showed complete wound healing after 21 days' treatment with SSD-SLNs along with DNase-I, whereas marketed formulations SSD and SSD-LSNs showed incomplete healing after 21 days. Data in hand suggest that the combination of SSD-SLNs with DNase-I is an effective treatment strategy against the biofilm-associated wound infections and accelerates wound healing.
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Affiliation(s)
- Krishna Kumar Patel
- Department of Pharmaceutical Engineering and Technology , Indian Institute of Technology (IIT-BHU) , Varanasi 221005 , India
| | - D Bhavya Surekha
- Department of Pharmaceutical Engineering and Technology , Indian Institute of Technology (IIT-BHU) , Varanasi 221005 , India
| | - Muktanand Tripathi
- Department of Microbiology , Institute of Medical Sciences, Banaras Hindu University , Varanasi 221005 , India
| | - Md Meraj Anjum
- Department of Pharmaceutical Engineering and Technology , Indian Institute of Technology (IIT-BHU) , Varanasi 221005 , India
| | - M S Muthu
- Department of Pharmaceutical Engineering and Technology , Indian Institute of Technology (IIT-BHU) , Varanasi 221005 , India
| | - Ragini Tilak
- Department of Microbiology , Institute of Medical Sciences, Banaras Hindu University , Varanasi 221005 , India
| | - Ashish Kumar Agrawal
- Department of Pharmaceutical Engineering and Technology , Indian Institute of Technology (IIT-BHU) , Varanasi 221005 , India
| | - Sanjay Singh
- Department of Pharmaceutical Engineering and Technology , Indian Institute of Technology (IIT-BHU) , Varanasi 221005 , India
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Rubin AE, Usta OB, Schloss R, Yarmush M, Golberg A. Selective Inactivation of Pseudomonas aeruginosa and Staphylococcus epidermidis with Pulsed Electric Fields and Antibiotics. Adv Wound Care (New Rochelle) 2019; 8:136-148. [PMID: 31737412 DOI: 10.1089/wound.2018.0819] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 10/15/2018] [Indexed: 01/17/2023] Open
Abstract
Objective: Increasing numbers of multidrug-resistant bacteria make many antibiotics ineffective; therefore, new approaches to combat microbial infections are needed. In addition, antibiotics are not selective-they kill pathogenic organisms as well as organisms that could positively contribute to wound healing (bio flora). Approach: Here we report on selective inactivation of Pseudomonas aeruginosa and Staphylococcus epidermidis, potential pathogens involved in wound infections with pulsed electric fields (PEFs) and antibiotics (mix of penicillin, streptomycin, and nystatin). Results: Using a Taguchi experimental design in vitro, we found that, under similar electric field strengths, the pulse duration is the most important parameter for P. aeruginosa inactivation, followed by the number of pulses and pulse frequency. P. aeruginosa, a potential severe pathogen, is more sensitive than the less pathogenic S. epidermidis to PEF (alone or in combination with antibiotics). Applying 200 pulses with a duration of 60 μs at 2.8 Hz, the minimum electric fields of 308.8 ± 28.3 and 378.4 ± 12.9 V/mm were required to inactive P. aeruginosa and S. epidermidis, respectively. Addition of antibiotics reduced the threshold for minimum electric fields required to inactivate the bacteria. Innovation: This study provides essential information, such as critical electric field parameters for bacteria inactivation, required for developing in vivo treatment and clinical protocols for using PEF for wound healing. Conclusion: A combination of PEFs with antibiotics reduces the electric field threshold required for bacteria disinfection. Such an approach simplifies devices required to disinfect large areas of infected wounds.
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Affiliation(s)
- Andrey Ethan Rubin
- Porter School of Environment and Earth Sciences, Tel Aviv University Ramat Aviv, Tel Aviv, Israel
| | - Osman Berk Usta
- Center for Engineering in Medicine, Massachusetts General Hospital Shriners Burn Hospital for Children and Harvard Medical School, Boston, Massachusetts
| | - Rene Schloss
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey
| | - Martin Yarmush
- Center for Engineering in Medicine, Massachusetts General Hospital Shriners Burn Hospital for Children and Harvard Medical School, Boston, Massachusetts
- Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey
| | - Alexander Golberg
- Porter School of Environment and Earth Sciences, Tel Aviv University Ramat Aviv, Tel Aviv, Israel
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Dinh THN, Serfaty S, Joubert PY. Non-Contact Radiofrequency Inductive Sensor for the Dielectric Characterization of Burn Depth in Organic Tissues. Sensors (Basel) 2019; 19:s19051220. [PMID: 30861994 PMCID: PMC6427200 DOI: 10.3390/s19051220] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 02/28/2019] [Accepted: 03/05/2019] [Indexed: 12/02/2022]
Abstract
A flat circular transmission line-based 300 MHz resonator was implemented for the non-contact assessment of burn depths in biological tissues. Used as a transmit-and-receive sensor, it was placed at a 2 mm distance from organic material test samples (pork fillet samples) which were previously burned on their surface in various heating conditions involving different temperatures, durations, and procedures. Data extracted from the sensor by means of a distant monitoring coil were found to clearly correlate with the depth of burn observed in the tissue samples (up to 40% sensor output changes for a 7 mm burn depth) and with the heating conditions (around 5% sensor output changes observed in samples burned with identical heating procedures but at two different temperatures—75 °C and 150 °C—and around 40% sensor output changes observed between samples heated at the same temperature but with different heating procedures). These results open the way for the development of easy-to-implement assessment and monitoring techniques for burns, e.g., integrated in wearable medical dressing-like monitoring devices.
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Affiliation(s)
- Thi Hong Nhung Dinh
- Centre for Nanoscience and Nanotechnology (C2N), CNRS, University Paris-Sud, Université Paris-Saclay, C2N-Orsay, 91405 Orsay, CEDEX, France.
| | - Stéphane Serfaty
- Systems and Applications of Information and Energy Technologies (SATIE), CNRS, Université de Cergy-Pontoise, 95000 Cergy-Pontoise, France.
| | - Pierre-Yves Joubert
- Centre for Nanoscience and Nanotechnology (C2N), CNRS, University Paris-Sud, Université Paris-Saclay, C2N-Orsay, 91405 Orsay, CEDEX, France.
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Hu ZH, Yu ZF, Huang J, Chen XF, Huang DB. [Effects of Coriaria Sinica Maxim's extract on microcirculation and oxidative stress of wounds in rats with deep second-degree burn]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2018; 34:50-6. [PMID: 29926659 DOI: 10.12047/j.cjap.5511.2018.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To investigate the effects of Coriaria Sinica Maxim's extract(CSME) on microcirculation and oxidative stress of wounds in rats with deep second-degree burn. METHODS One hundred and eighty rats were randomly divided into normal saline group(NS), white petroleum group(WPL), silver sulfadiazine group (SSD), Coriariasinica Maxim's extract group which were divided into low dose(CSME-L),middle dose(CSME-M) and high dose(CSME-H). After anesthesia with burn instrument to burn the hair removal area of rats, these wounds were confirmed by pathological results with deep second degree burns.And then,those drugs were applied respectively on the wounds,such as NS、WPL、SSD and different concentrations of CSME. After injury at 48 h, 7 d, 14 d and 21 d,the healing rate(HR) of wound was measured, and the microvessel density (MVD), tissue moisture (TM), vascular endothelial growth factor (VEGF), model driven architecture (MDA), superoxide dismutase(SOD) and hydroxyproline(HYP) were detected, too. All pathological sections of the wound tissue were observed. RESULTS The HR of CSME groups were obviously increased with a dose-dependent manner, which was significantly higher than that of NS and WPL (P<0.05); On the 21st day, the diameter, number, distribution of the vessels and and the TM were less than other groups with a dose-dependent manner; On the 7th and 14th day after injury, CSME groups were significantly higher than the NS, WPL and SSD with a dose-dependent manner (P<0.05), but, on the 21st day after injury, they were lower than NS, WPL and SSD with a dose-dependent (P<0.05) manner. The levels of SOD, HYP, NO and ET in CSME groups were higher than those in other groups with dose-dependent on SOD activity, HYP, NO and ET content (P<0.05), while MDA activity was weaker than other groups (P<0.05). Similarly, pathological findings were also shown that CSME groups were better than other groups with a dose-dependent manner in decrease decreasing of wound repair time and hyperplasia of scar tissue. CONCLUSIONS CSME can relieve tissue edema, promote wound contraction, speed up the formation of eschar and accelerate the proliferation of granulation tissue, which are beneficial to the wound healing in the early stages. But, it can inhibit the hyperplasia of granulation tissue to prevent the excessive scar hyperplasia of burn wound in the later stages. Its mechanism is related to regulation what microcirculation, oxidativestress, NO and VEGF.
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Prabhu V, Acharya A, Satish Rao BS, Rathnakar B, Kumar P, Guddattu V, Mahato KK. Probing endogenous collagen by laser-induced autofluorescence in burn wound biopsies: A pilot study. J Biophotonics 2018; 11:e201700394. [PMID: 29675982 DOI: 10.1002/jbio.201700394] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
The focus of the current study was to interrogate the predictive potential of laser-induced autofluorescence (LIAF) by objectively assessing collagen synthesis in burn wound granulation tissues ex vivo. Prior grafting, granulation tissues (20 samples) following burn injury were collected from 17 subjects of age range 18 to 60 years with patient/donor consent and the corresponding autofluorescence spectra were recorded at 325 nm He-Cd laser (≈2 mW) excitations. The resulting endogenous collagen intensity from the above tissue samples was computed by normalizing the nicotinamide adenine dinucleotide levels. In addition, the hydroxyproline content was also estimated biochemically from the same granulation tissues. A comparative assessment of both LIAF and biochemical estimations for endogenous collagen by hydroxyproline resulted in strong positive correlation among them. The above relevant observations suggest that LIAF is equally informative as that of biochemical estimations, in evaluating endogenous collagen content in wound granulation tissues. Thus, it can be concluded that LIAF has the predictive potential, as a noninvasive objective tool to measure the endogenous collagen levels in wound biopsy tissues and provide complementary data conducive for making clinical decisions.
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Affiliation(s)
- Vijendra Prabhu
- Department of Biophysics, School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Anusha Acharya
- Department of Biophysics, School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
- Department of Biotechnology, School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Bola S Satish Rao
- Department of Radiation Biology and Toxicology, School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Bharath Rathnakar
- Department of Biophysics, School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Pramod Kumar
- Department of Plastic Surgery and Burns, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India
| | - Vasudeva Guddattu
- Department of Statistics, Prasanna School of Public Health, Manipal Academy of Higher Education, Manipal, India
| | - Krishna K Mahato
- Department of Biophysics, School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
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Gholipour-Kanani A, Mohsenzadegan M, Fayyazi M, Bahrami H, Samadikuchaksaraei A. Poly (ɛ-caprolactone)-chitosan-poly (vinyl alcohol) nanofibrous scaffolds for skin excisional and burn wounds in a canine model. IET Nanobiotechnol 2018; 12:619-625. [PMID: 30095423 PMCID: PMC8676518 DOI: 10.1049/iet-nbt.2017.0115] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 12/05/2017] [Accepted: 01/09/2018] [Indexed: 04/05/2024] Open
Abstract
Poly (ɛ-caprolactone)-chitosan-poly (vinyl alcohol) (PCL: Cs: PVA) nanofibrous blend scaffolds were known as useful materials for skin wound healing and would help the healing process about 50% faster at the final time point. From the previous studies by the authors, PCL: Cs: PVA (in 2: 1: 1.5 mass ratio) nanofibres showed high efficacy in healing on rat models. In this study, the scaffolds were examined in burn and excision wounds healing on dogs as bigger models. The scaffolds were applied on dorsum skin wounds (n = 5) then macroscopic and microscopic investigations were carried out to measure the wounds areas and to track healing rate, respectively. Macroscopic results showed good aspect healing effect of scaffolds compared with control wounds especially after 21 days post-operating for both cutting and burn wounds. Pathological studies showed that the healing rates of the wounds covered with PCL: Cs: PVA nanofibrous scaffolds were much rapid compared to untreated wounds in control group. The immunogenicity of the scaffolds in canine model was also investigated. The findings showed that nanofibrous blend scaffolds was not immunogenic in humoural immune responses. All these results indicated that PCL: Cs: PVA nanofibrous web could be considered as promising materials for wounds healings.
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Affiliation(s)
- Adeleh Gholipour-Kanani
- Department of Textile Engineering, Science and Research Branch, Islamic Azad University, 147789-3855, Tehran, Iran.
| | - Monireh Mohsenzadegan
- Department of Medical Laboratory Science, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran 144961-4535, Iran
| | - Mohammadreza Fayyazi
- Department of Medical Laboratory Science, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran 144961-4535, Iran
| | - Hajir Bahrami
- Textile Engineering Department, Amirkabir University of Technology, Tehran 15875-4413, Iran
| | - Ali Samadikuchaksaraei
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran 144961-4535, Iran
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Ghanavati R, Darban-Sarokhalil D, Navab-Moghadam F, Kazemian H, Irajian G, Razavi S. First report of coexistence of AmpC beta-lactamase genes in Klebsiella pneumoniae strains isolated from burn patients. Acta Microbiol Immunol Hung 2017; 64:455-462. [PMID: 28859497 DOI: 10.1556/030.64.2017.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Klebsiella spp. are among the most frequently isolated bacteria from burn wounds. These organisms are among the most important opportunistic pathogens, causing hospital-acquired and healthcare-associated infections worldwide. Limited information is available about prevalence of AmpC-producing Klebsiella pneumoniae from burn patients. Therefore, the aim of this study was to determine the characterization of AmpC beta-lactamase among K. pneumoniae isolated from burn patients. Samples were collected from wound specimens of patients with burn injury from a burn hospital in Tehran during 18 months (March 2015 to August 2016). For phenotypic detection of AmpC beta-lactamase, disk diffusion method with cefoxitin was used for screening, AmpC disk test and boronic acid inhibitor-based method were used as confirmatory tests. Polymerase chain reaction (PCR) was performed to screen all isolates with AmpC genes including ACCM, DHAM, EBCM, FOXM, MOXM, and CITM. Finally, PCR products were validated using sequencing. During this study, 102 isolates of K. pneumoniae were collected. Among these isolates, 52.9% suspected as AmpC producer by disk agar diffusion cefoxitin screening method. By confirmatory phenotypic methods, 19.6% of isolates considered as AmpC producer. Molecular analysis revealed 43.1% of cefoxitin-resistant isolates harbored at least one of the AmpC genes including CITM (22.5%), EBCM (21.5%), DHAM (7.8%), and FOXM (0.98%). In addition, 5.8% of isolates harbored two AmpC genes and 2.9% harbored three AmpC genes. In conclusion, K. pneumoniae is becoming a serious problem in burn patients. Accurate and precise methods and guidelines should be designed for detection of antibiotic-resistant mechanisms. Our data showed the high rate of AmpC beta-lactamase among K. pneumoniae isolated from burn patients, which limit the treatment options. Therefore, the results of this study can provide evidence to help for appropriate treatment of burn patients.
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Affiliation(s)
- Roya Ghanavati
- 1 Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Davood Darban-Sarokhalil
- 1 Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Fateme Navab-Moghadam
- 1 Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Kazemian
- 2 Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran
- 3 Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Irajian
- 1 Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Shabnam Razavi
- 1 Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Forson O, Ayanka E, Olu-Taiwo M, Pappoe-Ashong P, Ayeh-Kumi P. Bacterial infections in burn wound patients at a tertiary teaching hospital in Accra, Ghana. Ann Burns Fire Disasters 2017; 30:116-120. [PMID: 29021723 PMCID: PMC5627548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 04/29/2017] [Indexed: 06/07/2023]
Abstract
Intact human skin surface is essential for protection against infection, preservation of body fluid homeostasis and thermoregulation. Burn injury compromises the skin barrier and enables bacterial infection, hence delaying burn wound healing. This study aimed to determine the microbial profile of burn wounds, and resistance patterns of microbes with respect to the source of the injured patient's wound. Fifty wound swab samples were collected from fifty burn patients at the Korle-Bu Teaching Hospital, Accra (KBTH). Sterile swabs moistened with sterile saline were used to swab burn wounds. The swabs were plated on blood agar and MacConkey agar for 24 hrs at 37°C. Biochemical tests were carried out on the representative isolate on each plate, and antibacterial sensitivity pattern was determined using the Kirby-Bauer disc diffusion method. The study revealed that the main source of burns was gas flames (66%) and scalds (28%). Out of the 50 samples analysed, 86% were culture positive and 14% were culture negative for bacteria. The predominant organisms isolated were Pseudomonas sp. (30.2%) and Acinetobacter sp. (20.9%). Proteus mirabillis (2.3%) and Staphylococcus aureus (2.3%) were the least frequently isolated bacteria. Although Pseudomonas sp. showed varying resistance levels to gentamicin, cotrimoxazole and ciprofloxacin, all the Acinetobacter sp. were resistant to most of the tested antibiotics used. Resistant gram negative bacteria are the most common isolates associated with burn wounds in Accra, Ghana. Hence a careful selection of antibiotics to control the wound infection is required for proper management of burn wounds in order to help reduce morbidity and mortality.
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Affiliation(s)
- O.A. Forson
- Department of Medical Laboratory Science, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - E. Ayanka
- Department of Medical Laboratory Science, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - M. Olu-Taiwo
- Department of Medical Laboratory Science, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - P.J. Pappoe-Ashong
- Department of Medical Microbiology, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
| | - P.J. Ayeh-Kumi
- Department of Medical Laboratory Science, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
- Department of Medical Microbiology, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Legon, Accra, Ghana
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Zhong G, Cheng J, Liang ZC, Xu L, Lou W, Bao C, Ong ZY, Dong H, Yang YY, Fan W. Short Synthetic β-Sheet Antimicrobial Peptides for the Treatment of Multidrug-Resistant Pseudomonas aeruginosa Burn Wound Infections. Adv Healthc Mater 2017; 6. [PMID: 28135045 DOI: 10.1002/adhm.201601134] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 12/12/2016] [Indexed: 12/28/2022]
Abstract
Pseudomonas aeruginosa is often implicated in burn wound infections; its inherent drug resistance often renders these infections extremely challenging to treat. This is further compounded by the problem of emerging drug resistance and the dearth of novel antimicrobial drug discovery in recent years. In the perennial search for effective antimicrobial compounds, the authors identify short synthetic β-sheet folding peptides, IRIKIRIK (IK8L), IRIkIrIK (IK8-2D), and irikirik (IK8D) as prime candidates owing to their high potency against Gram-negative bacteria. In this study, the peptides are first assayed against 20 clinically isolated multidrug-resistant P. aeruginosa strains in comparison with the conventional antibiotics imipenem and ceftazidime, and IK8L is demonstrated to be the most effective. IK8L also exhibits superior antibacterial killing kinetics compared to imipenem and ceftazidime. From transmission electron microscopy, confocal microscopy, and protein release analyses, IK8L shows membrane-lytic antimicrobial mechanism. Repeated use of IK8L does not induce drug resistance, while the bacteria develop resistance against the antibiotics after several times of treatment at sublethal doses. Analysis of mouse blood serum chemistry reveals that peptide does not induce systemic toxicity. The potential utility of IK8L in the in vivo treatment of P. aeruginosa-infected burn wounds is further demonstrated in a mouse model.
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Affiliation(s)
- Guansheng Zhong
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Junchi Cheng
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Zhen Chang Liang
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Liang Xu
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Weiyang Lou
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Chang Bao
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Zhan Yuin Ong
- School of Physics and Astronomy and Leeds Institute of Biomedical and Clinical Sciences; University of Leeds; Leeds LS2 9JT UK
| | - Huihui Dong
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way, The Nanos Singapore 138669 Singapore
| | - Weimin Fan
- Program of Innovative Therapeutics; Division of Hepatobiliary and Pancreatic Surgery; Department of Surgery; First Affiliated Hospital; School of Medicine; Zhejiang University; Key Laboratory of Combined Multi-organ Transplantation; Ministry of Public Health; Key Laboratory of Organ Transplantation; Zhejiang Province Hangzhou 310003 China
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Beroual K, Agabou A, Abdeldjelil MC, Boutaghane N, Haouam S, Hamdi-Pacha Y. EVALUATION OF CRUDE FLAXSEED (Linum usitatissimum L) OIL IN BURN WOUND HEALING IN NEW ZEALAND RABBITS. Afr J Tradit Complement Altern Med 2017; 14:280-286. [PMID: 28480439 PMCID: PMC5412234 DOI: 10.21010/ajtcam.v14i3.29] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background: Burns are among the most prevalent injuries in humans with high cost in health care and heavy prolonged or permanent physical, psychological and social consequences. Commercial antimicrobial creams and dressing agents are unsuccessful in healing deep burn wounds. Materials and Methods: A study was conducted to assess the impact of crude linseed oil (LSO) topical application on burn wounds healing in rabbits in comparison with untreated wounds (NAT) and those treated with Vaseline gel (VAG) and Cicatryl-Bio ointment (CBO). By the 28th day post burning, skin biopsies were analyzed for histological and cytological lesions. The presence of various bioactive phytochemical groups in linseed was also screened. Results: Phytochemical screening has resulted in high concentrations of flavonoids and terpenoids, low amounts of catechic tannins and total absence of alkaloids and saponosides. All along the trial, the rate of wounds contraction was found to be significantly higher in burns treated with LSO which had also a significant shorter healing period (26±5.89 days) as compared to the other treatments. LSO healed wounds included less inflammatory cells, complete epithelium regeneration with a reduced thickness of the new formed dermis, discreet fibrosis, enhanced neo-vascularization, increased number of collagen fibers, fibroblasts and many myofibroblasts. Additionally, no adverse effects of LSO on cicatrization process were recorded. Conclusion: These findings prove the safety and efficaciousness of linseed oil topical application in the therapy of burn wounds.
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Affiliation(s)
- Katiba Beroual
- Laboratory of toxicology and pharmacology, Institute of Veterinary Sciences, University Frères Mentouri, Constantine 1, Algeria
| | - Amir Agabou
- padesca research Laboratory, Institute of Veterinary Sciences, University Frères Mentouri, Constantine 1, Algeria
| | - Mohamed-Cherif Abdeldjelil
- padesca research Laboratory, Institute of Veterinary Sciences, University Frères Mentouri, Constantine 1, Algeria
| | - Naima Boutaghane
- Chemistry department, Faculty of Exact Sciences, University Frères Mentouri, Constantine 1, Algeria
| | - Saîd Haouam
- Private Laboratory of Anatomopathology and Cytology, Constantine, Algeria
| | - Youcef Hamdi-Pacha
- Laboratory of toxicology and pharmacology, Institute of Veterinary Sciences, University Frères Mentouri, Constantine 1, Algeria
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Gurjarpadhye AA, Parekh MB, Dubnika A, Rajadas J, Inayathullah M. Infrared Imaging Tools for Diagnostic Applications in Dermatology. SM J Clin Med Imaging 2015; 1:1-5. [PMID: 26691203 PMCID: PMC4683617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Infrared (IR) imaging is a collection of non-invasive imaging techniques that utilize the IR domain of the electromagnetic spectrum for tissue assessment. A subset of these techniques construct images using back-reflected light, while other techniques rely on detection of IR radiation emitted by the tissue as a result of its temperature. Modern IR detectors sense thermal emissions and produce a heat map of surface temperature distribution in tissues. Thus, the IR spectrum offers a variety of imaging applications particularly useful in clinical diagnostic area, ranging from high-resolution, depth-resolved visualization of tissue to temperature variation assessment. These techniques have been helpful in the diagnosis of many medical conditions including skin/breast cancer, arthritis, allergy, burns, and others. In this review, we discuss current roles of IR-imaging techniques for diagnostic applications in dermatology with an emphasis on skin cancer, allergies, blisters, burns and wounds.
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Affiliation(s)
- Abhijit Achyut Gurjarpadhye
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University School of Medicine, Palo Alto, California, USA
- Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - Mansi Bharat Parekh
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University School of Medicine, Palo Alto, California, USA
| | - Arita Dubnika
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University School of Medicine, Palo Alto, California, USA
- Riga Technical University, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre, Riga, Latvia
| | - Jayakumar Rajadas
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University School of Medicine, Palo Alto, California, USA
- Cardiovascular Pharmacology, Cardiovascular Institute, Stanford University School of Medicine, Stanford, California, USA
| | - Mohammed Inayathullah
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University School of Medicine, Palo Alto, California, USA
- Department of Radiology, Stanford University School of Medicine, Stanford, California, USA
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Abstract
Cationic antimicrobial peptides were first thought to fight infection in animal models by disintegrating bacterial peptides and later by inhibiting bacteria-specific intracellular processes. However, ever increasing evidences indicate that cationic peptides accumulate around and modulate the immune system both systemically and in cutaneous and mucosal surfaces where injuries and infections occur. Native and designer antibacterial peptides as well as cationic peptides, never considered as antibiotics, promote wound healing at every step of cutaneous tissue regeneration. This article provides an introductory list of examples of how cationic peptides are involved in immunostimulation and epithelial tissue repair, eliminating wound infections and promoting wound healing in potential therapeutic utility in sight. Although a few antimicrobial peptides reached the Phase II clinical trial stage, toxicity concerns limit the potential administration routes. Resistance induction to both microbiology actions and the integrity of the innate immune system has to be carefully monitored.
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Boonkaew B, Barber PM, Rengpipat S, Supaphol P, Kempf M, He J, John VT, Cuttle L. Development and characterization of a novel, antimicrobial, sterile hydrogel dressing for burn wounds: single-step production with gamma irradiation creates silver nanoparticles and radical polymerization. J Pharm Sci 2014; 103:3244-53. [PMID: 25079080 DOI: 10.1002/jps.24095] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 06/16/2014] [Accepted: 06/30/2014] [Indexed: 01/21/2023]
Abstract
Patients with burn wounds are susceptible to wound infection and sepsis. This research introduces a novel burn wound dressing that contains silver nanoparticles (SNPs) to treat infection in a 2-acrylamido-2-methylpropane sulfonic acid sodium salt (AMPS-Na(+) ) hydrogel. Silver nitrate was dissolved in AMPS-Na(+) solution and then exposed to gamma irradiation to form SNP-infused hydrogels. The gamma irradiation results in a cross-linked polymeric network of sterile hydrogel dressing and a reduction of silver ions to form SNPs infused in the hydrogel in a one-step process. About 80% of the total silver was released from the hydrogels after 72 h immersion in simulated body fluid solution; therefore, they could be used on wounds for up to 3 days. All the hydrogels were found to be nontoxic to normal human dermal fibroblast cells. The silver-loaded hydrogels had good inhibitory action against Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus. Results from a pilot study on a porcine burn model showed that the 5-mM silver hydrogel was efficient at preventing bacterial colonization of wounds, and the results were comparable to the commercially available silver dressings (Acticoat(TM) , PolyMem Silver(®) ). These results support its use as a potential burn wound dressing.
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Affiliation(s)
- Benjawan Boonkaew
- Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana, 70118
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Karimi H, Soudmand A, Orouji Z, Taghiabadi E, Mousavi S. Burn wound healing with injection of adipose-derived stem cells: a mouse model study. Ann Burns Fire Disasters 2014; 27:44-49. [PMID: 25249847 PMCID: PMC4158446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Indexed: 06/03/2023]
Abstract
Stem cells have shown promise with regard to the healing process of burn wounds. However, donor sites for these cells are still under investigation. The aim of this study is to review the efficacy of adipose tissue-derived stem cells (ADSCs) in accelerating wound healing of third degree burns in a mouse model. To this end, forty healthy male inbred Balb/c mice were selected and set up as an experimental model for third degree burn wounds. They were randomly divided into 3 equally sized groups: the ADSCs group, the mechanically prepared adipose tissue group, and the control group. The wounds were examined daily until the mice were sacrificed for tissue sampling in the 3(rd) week. Our results showed that wound surface area and eschar thickness were smaller in the ADSCs group throughout the study period, although there was no significant difference between the groups for decreasing values of wound area characteristics. In terms of wound healing parameters, lymphocyte and macrophage cell counts were larger in the ADSCs group compared to the other groups. Fibroplasia, collagen synthesis and remodeling were more aberrant in this group. However, there was no statistically significant difference in either of these observed differences (p>0.05). Although enzymatically prepared ADSCs seem a potential treatment in wound healing, our study of a mouse model burn wound revealed no significant improvement in using this option.
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Affiliation(s)
- H. Karimi
- Department of Plastic, Reconstructive and Burn Surgery, Hazrat-e-Fatemeh Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - A. Soudmand
- Department of Plastic, Reconstructive and Burn Surgery, Hazrat-e-Fatemeh Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Z. Orouji
- Department of Regenerative Medicine at Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - E. Taghiabadi
- Department of Stem Cells and Developmental Biology at Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - S.J. Mousavi
- Department of Community Medicine, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
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Mathangi Ramakrishnan K, Babu M, Mathivanan, Jayaraman V, Shankar J. Advantages of collagen based biological dressings in the management of superficial and superficial partial thickness burns in children. Ann Burns Fire Disasters 2013; 26:98-104. [PMID: 24133405 PMCID: PMC3793887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Indexed: 11/11/2023]
Abstract
Collagen based dressings for acute burn wound management have been extensively used in India, particularly in the city of Chennai. Due to the high levels of humidity in our city, closed dressings become infected and treatment with topical antimicrobials, like Silver Sulfadiazine cream, quickly become desiccated. Collagen membrane dressings were manufactured by the biomaterial laboratory of the Central Leather Research Institute (CLRI), Government of India in Chennai, and then the process was patented. Collagen was extracted from bovine skin and Achilles tendons, and then reconstituted. This was used on burn wounds as dressings after clearance from the Institutional Review Board and Ethics Committees of the Hospital and CLRI. Continued research in this field to enable resulted in the design of silver sulphadiazine loaded alginate microspheres which were embedded in the reconstituted collagen. Controlled delivery of silver sulphadiazine. This collagen membrane was used in chronic infected burns. Low molecular weight heparin was given subcutaneously to improve wound healing in burn injuries and collagen membrane dressings were also applied. After several trials the process technology was patented. The advantages and disadvantages of the collagen membrane cover is elaborated in a group of 487 pediatric burn patients. The trial was conducted at the burn unit of Kanchi Kamakoti Childs Trust Hospital (KKCTH) in Chennai, India.
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Affiliation(s)
- K Mathangi Ramakrishnan
- Childs Trust Medical Research Foundation and Kanchi Kamakoti Childs Trust Hospital, Chennai, India
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Gunjan K, Shobha C, Sheetal C, Nanda H, Vikrant C, Chitnis DS. A comparative study of the effect of different topical agents on burn wound infections. Indian J Plast Surg 2012; 45:374-8. [PMID: 23162237 PMCID: PMC3495388 DOI: 10.4103/0970-0358.101320] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background: Topical agents are used to treat burn wound infections. Aims and Objective: The present work was aimed to find out the in vitro efficacy of different topical agents against burn wound pathogens. Settings and Design: Randomly selected gram-positive (29) and gram-negative bacterial (119) isolates from burn wound cases admitted in burn unit of Choithram Hospital and Research Centre, Indore, were included in the in vitro activity testing for silver nitrate, silver sulphadiazine (SSD), chlorhexidine, cetrimide, nitrofuran, soframycin, betadine, benzalkonium chloride and honey by growth inhibition on agar medium. Materials and Methods: Multidrug-resistant isolates of gram-positive and gram-negative bacteria were checked for different topical agents. 1% topical agent was mixed with Mueller-Hinton agar. Two microlitres of bacterial suspension adjusted to 0.5 McFarland turbidity standard was spread over the topical agent containing plates. The plates without the topical agent were used as control plates. The plates were incubated for 48 h at 37°C. Results: SSD (148/148), silver nitrate (148/148) and chlorhexidine (148/148) showed excellent activity against all the pathogens. Neosporin had poor activity against Pseudomonas aeruginosa, (4/44) Proteus spp. (2/4) and group D streptococci (1/4). Betadine did not show activity against the bacterial isolates in the presence of organic matter. Honey did not exert any antimicrobial activity under the study conditions. Conclusion: SSD, silver nitrate and chlorhexidine have excellent activity against all the bacterial pathogens and could be used empirically, while identification of the infective agent is required for selecting the alternative topical agents such as nitrofuran, soframycin, and benzalkonium chloride.
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Affiliation(s)
- Katara Gunjan
- Department of Microbiology, Immunology and Molecular Biology, Choithram Hospital and Research Centre, Manik Bagh Road, Indore, Madhya Pradesh, India
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Maghsoudi H, Salehi F, Khosrowshahi M, Baghaei M, Nasirzadeh M, Shams R. Comparison between topical honey and mafenide acetate in treatment of burn wounds. Ann Burns Fire Disasters 2011; 24:132-137. [PMID: 22396671 PMCID: PMC3293229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Indexed: 05/31/2023]
Abstract
Histological and clinical studies of wound healing were performed in comparable cases of fresh partial-thickness burns treated with honey dressing or mafenide acetate in two groups of 50 randomly allocated patients. Of the patients with honey-treated wounds, 84% showed satisfactory epithelialization by day 7 and 100% by day 21. In wounds treated with mafenide acetate, epithelialization occurred by day 7 in 72% of cases and in 84% by day 21. Histological evidence of reparative activity was observed in 80% of wounds treated with honey dressing by day 7 with minimal inflammation. Fifty-two per cent of the mafenide acetate treated wounds showed reparative activity with inflammatory changes by day 7. Reparative activity reached 100% by day 21 with the honey dressing and 84% with mafenide acetate. Thus, in honey-dressed wounds, early subsidence of acute inflammatory changes, better control of infection, and quicker wound healing were observed, while in mafenide acetate treated wounds a sustained inflammatory reaction was noted even on epithelialization.
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Affiliation(s)
- H. Maghsoudi
- ∗ Corresponding author: Hemmat Maghsoudi, M.D.Sina HospitalAzadi StreetPO box 1548Tabriz 5163639888East Azarbaijan, Iran0098-411-33020240098-411-5412151
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Srinivasan S, Vartak AM, Patil A, Saldanha J. Bacteriology of the burn wound at the Bai Jerbai Wadia Hospital for children, Mumbai, India-A 13-year study, Part I-Bacteriological profile. Indian J Plast Surg 2009; 42:213-8. [PMID: 20368860 PMCID: PMC2845367 DOI: 10.4103/0970-0358.59284] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
AIM To study which organisms were prevalent in our burn unit and their antibiotic sensitivity pattern in brief. METHOD Microbiological data of 1534 patients admitted to the burns unit of the Bai Jerbai Wadia Hospital for Children, Mumbai over a period of 13 years (1994-2006) was reviewed retrospectively. A total of 9333 swabs were cultured and antibiotic sensitivities to the isolated organisms determined. The age group of patients admitted to our facility ranged from one month to 15 years. RESULT Klebsiella was the predominant organism in our set-up (33.91%), closely followed by Pseudomonas (31.84%). The antibiotic sensitivities of the isolated organisms are discussed in detail in the text. CONCLUSION Every treatment facility has microorganisms unique to it and these change with time. It is therefore of paramount importance to have an in-depth knowledge of the resident organisms and their antibiotic sensitivity pattern so that infection-related morbidity and mortality are improved.
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Affiliation(s)
- Shankar Srinivasan
- Department of Burns and Plastic Surgery, B.J. Wadia Hospital for Children, Parel, Mumbai, India
| | - Arvind M. Vartak
- Department of Burns and Plastic Surgery, B.J. Wadia Hospital for Children, Parel, Mumbai, India
| | - Aakanksha Patil
- Department of Burns and Plastic Surgery, B.J. Wadia Hospital for Children, Parel, Mumbai, India
| | - Jovita Saldanha
- Department of Burns and Plastic Surgery, B.J. Wadia Hospital for Children, Parel, Mumbai, India
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