1
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Ashna M, Senthilkumar N, Sanpui P. Human Hair Keratin-Based Hydrogels in Regenerative Medicine: Current Status and Future Directions. ACS Biomater Sci Eng 2023; 9:5527-5547. [PMID: 37734053 DOI: 10.1021/acsbiomaterials.3c00883] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
Regenerative medicine (RM) is a multidisciplinary field that utilizes the inherent regenerative potential of human cells to generate functionally and physiologically acceptable human cells, tissues, and organs in vivo or ex vivo. An appropriate biomaterial scaffold with desired physicochemical properties constitutes an important component of a successful RM approach. Among various forms of biomaterials explored until the present day, hydrogels have emerged as a versatile candidate for tissue engineering and regenerative medicine (TERM) applications such as scaffolds for spatial patterning and delivering therapeutic agents, or substrates to enhance cell growth, differentiation, and migration. Although hydrogels can be prepared from a variety of synthetic polymers as well as biopolymers, the latter are preferred for their inherent biocompatibility. Specifically, keratins are fibrous proteins that have been recently explored for constructing hydrogels useful for RM purposes. The present review discusses the suitability of keratin-based biomaterials in RM, with a particular focus on human hair keratin hydrogels and their use in various RM applications.
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Affiliation(s)
- Mymuna Ashna
- Department of Biotechnology, BITS Pilani Dubai Campus, Dubai International Academic City, Dubai, United Arab Emirates
| | - Neeharika Senthilkumar
- Department of Biotechnology, BITS Pilani Dubai Campus, Dubai International Academic City, Dubai, United Arab Emirates
| | - Pallab Sanpui
- Department of Biotechnology, BITS Pilani Dubai Campus, Dubai International Academic City, Dubai, United Arab Emirates
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2
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Keenan CS, Cooper L, Nuutila K, Chapa J, Christy S, Chan RK, Carlsson AH. Full-thickness skin columns: A method to reduce healing time and donor site morbidity in deep partial-thickness burns. Wound Repair Regen 2023; 31:586-596. [PMID: 37491915 DOI: 10.1111/wrr.13114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 06/15/2023] [Accepted: 06/21/2023] [Indexed: 07/27/2023]
Abstract
The current standard of care for the coverage of large wounds often involves split thickness skin grafts (STSGs) which have numerous limitations. One promising technique that has gained traction is fractional autologous skin grafting using full-thickness skin columns (FTSC). Harvesting occurs orthogonally by taking numerous individual skin columns containing the epidermis down through the dermis and transferring them to the wound bed. The purpose of this porcine study was to investigate the efficacy of implanting FTSCs directly into deep partial-thickness burn wounds, as well as examining donor site healing at the maximal harvest density. It was hypothesised that by utilising FTSCs, the rate of healing in deep partial thickness burns can be improved without incurring the donor morbidity seen in other methods of skin grafting. Deep partial-thickness burns were created on the dorsum of female red duroc swine, debrided 3 days later and FTSCs were implanted at varying expansion ratios directly into the burn wounds. At day 14, 1:50 expansion ratio showed significantly faster re-epithelialisation compared to the debrided burn control and 1:200. Donor sites (at 7%-10% harvest density) were 100% re-epithelialised by day 7. Additionally, the maximal harvest density was determined to be 28% in an ex vivo model, which then five donor sites were harvested at 28% density on a red duroc swine and compared to five STSG donor sites. At maximal harvest density, FTSC donor sites were significantly less hypopigmented compared to STSGs, but no significant differences were observed in re-epithelialisation, contraction, blood flow or dermal thickness. In conclusion, implantation directly into deep partial-thickness burns is a viable option for the application of FTSCs, favouring lower expansion ratios like 1:50 or lower. Little difference in donor site morbidity was observed between FTSC at a maximal harvest density of 28% and STSGs, exceeding the optimal harvest density.
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Affiliation(s)
- Corey S Keenan
- Department of Surgery, William Beaumont Army Medical Center, El Paso, Texas, USA
| | - Laura Cooper
- United States Army Institute for Surgical Research, Houston, Texas, USA
| | - Kristo Nuutila
- United States Army Institute for Surgical Research, Houston, Texas, USA
| | - Javier Chapa
- United States Army Institute for Surgical Research, Houston, Texas, USA
| | | | - Rodney K Chan
- United States Army Institute for Surgical Research, Houston, Texas, USA
| | - Anders H Carlsson
- United States Army Institute for Surgical Research, Houston, Texas, USA
- The Metis Foundation, San Antonio, Texas, USA
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3
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Asuku M, Shupp JW. Burn wound conversion: clinical implications for the treatment of severe burns. J Wound Care 2023; 32:S11-S20. [PMID: 37121662 DOI: 10.12968/jowc.2023.32.sup5.s11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The identification of novel treatments for severe burn wounds relies on accurate clinical assessments of the extent of injury. However, evaluation of burn wound depth can be challenging due to the tendency for burn wounds to progress over time in a little-understood process known as 'burn wound conversion'. Local factors affecting the burn wound, such as inflammation, oxidative stress-induced tissue damage, vasostasis and bacterial infections, lead to increased cell death by apoptosis or oncosis, while systemic events may promote burn wound conversion. Acute shock, metabolic derangements, age or immunomodulation can modify cytokine secretion, lower immune responses, decrease blood flow or cause bacterial infection at the burn wound site. Therefore, therapeutic approaches targeting specific mechanisms that reduce cell death, improve wound reperfusion and promote tissue regrowth should favourably enhance burn wound healing, and long-term functional and aesthetic outcomes. Our current understanding of these mechanisms mostly comes from animal studies, underscoring the need for extensive research in humans. A streamlined approach would be to investigate the parallels in other disease states that exhibit ischaemia and potential reperfusion, such as ischaemic stroke and myocardial infarction. Moreover, in view of the limited knowledge available on the subject, the need exists for further clinical research into burn wound conversion and novel target pathways to ameliorate its effects. This review describes events that affect the viability of cells at the burn wound site resulting in burn wound conversion, and identifies potential targets for clinical interventions that may diminish burn wound conversion.
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Affiliation(s)
| | - Jeffrey W Shupp
- Department of Surgery, Biochemistry and Molecular & Cellular Biology, Georgetown University School of Medicine, MedStar Washington Hospital Center, Washington, DC, US
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4
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Weiss F, Agua K, Weinzierl A, Schuldt A, Egana JT, Schlitter AM, Steiger K, Machens HG, Harder Y, Schmauss D. A modified burn comb model with a new dorsal frame that allows for local treatment in partial-thickness burns in rats. J Burn Care Res 2022; 43:1329-1336. [PMID: 35259276 DOI: 10.1093/jbcr/irac032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Burn wound progression (BWP) leads to vertical and horizontal injury extension. The "burn comb model" is commonly used, in which a full-thickness burn with intercalated unburned interspaces is induced. We aimed to establish an injury progressing to the intermediate dermis, allowing repeated wound evaluation. Furthermore, we present a new dorsal frame that enables topical drug application. 8 burn field and 6 interspaces were induced on each of 17 rats' dorsa with a 10-second burn comb application. A developed 8-panel aluminum frame was sutured onto 12 animals and combined with an Elizabethan collar. Over 14 days, macroscopic & histologic wound assessment and Laser-Speckle-Contrast-Imaging (LSCI) were performed besides evaluation of frame durability. The 10-second group was compared to 9 animals injured with a full-thickness 60-second model. Frame durability was sufficient up to day 4 with 8 of 12 frames (67%) still mounted. The 60-second burn led to an increased extent of interspace necrosis (p=0.002). The extent of necrosis increased between days 1 and 2 (p=0.001), following the 10-second burn (24%±SEM 8% to 40%±SEM 6%) and the 60-second burn (57%±SEM 6% to 76%±SEM 4%). Interspace LSCI perfusion was higher than burn field perfusion. It earlier reached baseline levels in the 10-second group (on day 1: 142%±SEM 9% vs. 60%±SEM 5%; p<0.001). Within day 1, the 10-second burn showed histological progression to the intermediate dermis, both in interspaces and burn fields. This burn comb model with its newly developed fixed dorsal frame allows investigation of topical agents to treat BWP in partial-thickness burns.
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Affiliation(s)
- Fabian Weiss
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Kariem Agua
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Andrea Weinzierl
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.,Department of Plastic, Reconstructive and Aesthetic Surgery, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland
| | - Anna Schuldt
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Jose Tomas Egana
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.,Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Anna Melissa Schlitter
- Institute of Pathology, School of Medicine, Technische Universität München, Munich, Germany
| | - Katja Steiger
- Institute of Pathology, School of Medicine, Technische Universität München, Munich, Germany
| | - Hans-Günther Machens
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Yves Harder
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.,Department of Plastic, Reconstructive and Aesthetic Surgery, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland.,Faculty of Biomedical Sciences, Università della Svizzera Italiana (USI), Lugano, Switzerland
| | - Daniel Schmauss
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.,Department of Plastic, Reconstructive and Aesthetic Surgery, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland.,Faculty of Biomedical Sciences, Università della Svizzera Italiana (USI), Lugano, Switzerland
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5
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Khurana A, Banothu AK, Thanusha AV, Nayal A, Dinda AK, Singhal M, Bharani KK, Koul V. Preclinical efficacy study of a porous biopolymeric scaffold based on gelatin-hyaluronic acid-chondroitin sulfate in a porcine burn injury model: role of critical molecular markers (VEGFA, N-cadherin, COX-2), gamma sterilization efficacy and a comparison of healing potential to Integra™. Biomed Mater 2021; 16. [PMID: 34384056 DOI: 10.1088/1748-605x/ac1d3e] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 08/12/2021] [Indexed: 12/24/2022]
Abstract
Development of scaffold from biopolymers can ease the requirements for donor skin autograft and plays an effective role in the treatment of burn wounds. In the current study, a porous foam based, bilayered hydrogel scaffold was developed using gelatin, hyaluronic acid and chondroitin sulfate (G-HA-CS). The fabricated scaffold was characterized physicochemically for pre- and post-sterilization efficacy by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA).In-vitrostudies proved that the scaffold promoted cellular proliferation. The efficacy of G-HA-CS scaffold was compared with Integra™ at different time points (7, 14, 21 and 42 days), in a swine second degree burn wound model. Remarkable healing potential of the scaffold was evident from the wound contraction rate, reduction of IL-6, TNF-αand C3. The expression of healing markers TGF-β1 and collagen 1 revealed significant skin regeneration with regulated fibroblast activation towards the late phase of healing (p< 0.001 at day 21 and 42 vs. control). Expression of Vascular Endothelial Growth Factor A (VEGFA), vimentin and N-cadherin were found to favor angiogenesis and skin regeneration. Mechanistically, scaffold promoted wound healing by modulation of CD-45, cyclooxygenase-2 and MMP-2. Thus, the promising results with foam based scaffold, comparable to Integra™ in swine burn injury model offer an innovative lead for clinical translation for effective management of burn wound.
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Affiliation(s)
- Amit Khurana
- Centre for Biomedical Engineering (CBME), Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India.,Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science, PVNRTVU, Rajendranagar, Hyderabad 500030, Telangana, India.,Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science (CVSc), PVNRTVU, Warangal 506166, Telangana, India
| | - Anil Kumar Banothu
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science, PVNRTVU, Rajendranagar, Hyderabad 500030, Telangana, India.,Department of Aquatic Animal Health Management, College of Fishery Science, PVNRTVU, Pebbair, Wanaparthy 509104, Telangana, India
| | - A V Thanusha
- Centre for Biomedical Engineering (CBME), Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India
| | - Aradhana Nayal
- Centre for Biomedical Engineering (CBME), Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India
| | - Amit Kumar Dinda
- Department of Pathology, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi 110029, India
| | - Maneesh Singhal
- Department of Plastic, Reconstructive and Burns Surgery, J.P.N. Apex Trauma Centre, All India Institute of Medical Sciences (AIIMS), Raj Nagar, New Delhi 110029, India
| | - Kala Kumar Bharani
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science, PVNRTVU, Rajendranagar, Hyderabad 500030, Telangana, India.,Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science (CVSc), PVNRTVU, Warangal 506166, Telangana, India.,Department of Aquatic Animal Health Management, College of Fishery Science, PVNRTVU, Pebbair, Wanaparthy 509104, Telangana, India
| | - Veena Koul
- Centre for Biomedical Engineering (CBME), Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India
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El Ayadi A, Salsbury JR, Enkhbaatar P, Herndon DN, Ansari NH. Metal chelation attenuates oxidative stress, inflammation, and vertical burn progression in a porcine brass comb burn model. Redox Biol 2021; 45:102034. [PMID: 34139550 PMCID: PMC8218731 DOI: 10.1016/j.redox.2021.102034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 05/18/2021] [Accepted: 06/03/2021] [Indexed: 12/29/2022] Open
Abstract
Oxidative stress and inflammation may mediate cellular damage and tissue destruction as the burn wound continues to progress after the abatement of the initial insult. Since iron and calcium ions play key roles in oxidative stress, this study tested whether topical application of a metal chelator proprietary lotion (Livionex Formulation (LF) lotion), that contains disodium EDTA as a metal chelator and methyl sulfonyl methane (MSM) as a permeability enhancer, would prevent progression or reduce burn wound severity in a porcine model. We have reported earlier that in a rat burn model, LF lotion reduces thermal injury progression. Here, we used the porcine brass comb burn model that closely mimics the human condition for contact burns and applied LF lotion every 8 h starting 15 min after the injury. We found that LF lotion reduces the depth of cell death as assessed by TUNEL staining and blood vessel blockage in the treated burn sites and interspaces. The protein expression of pro-inflammatory markers IL-6, TNF-a, and TNFα Converting Enzyme (TACE), and lipid aldehyde production (protein-HNE) was reduced with LF treatment. LF lotion reversed the burn-induced decrease in the aldehyde dehydrogenase (ALDH-1) expression in the burn sites and interspaces. These data show that a topically applied EDTA-containing lotion protects both vertical and horizontal burn progression when applied after thermal injury. Curbing burn wound conversion and halting the progression of second partial burn to third-degree full-thickness burn remains challenging when it comes to burn treatment strategies during the acute phase. Burn wound conversion can be reduced with targeted treatments to attenuate the oxidative and inflammatory response in the immediate aftermath of the injury. Our studies suggest that LF lotion could be such a targeted treatment.
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Affiliation(s)
- Amina El Ayadi
- Department of Surgery, University of Texas Medical Branch, Galveston, TX, 77555-0647, USA.
| | - John R Salsbury
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, TX, 77555-0647, USA
| | - Perenlei Enkhbaatar
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, TX, 77555-0647, USA
| | - David N Herndon
- Department of Surgery, University of Texas Medical Branch, Galveston, TX, 77555-0647, USA
| | - Naseem H Ansari
- Department of Biochemistry & Molecular Biology, University of Texas Medical Branch, Galveston, TX, 77555-0647, USA
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7
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Chen M, Ren X, Dong L, Li X, Cheng H. Preparation of dynamic covalently crosslinking keratin hydrogels based on thiol/disulfide bonds exchange strategy. Int J Biol Macromol 2021; 182:1259-1267. [PMID: 33991559 DOI: 10.1016/j.ijbiomac.2021.05.057] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/28/2021] [Accepted: 05/07/2021] [Indexed: 01/16/2023]
Abstract
Dynamic covalently crosslinking (DCC) hydrogels can mimic extracellular matrix and have the functions such as self-healing, self-adapting, and shape memory. The DCC keratin hydrogels based on thiol group-disulfide bonds exchange strategy have no reports so far as we know. Herein, inspired by the rich content of the intramolecular disulfide bonds and free thiol groups in the keratins extracted by reducing agents, we report a simple thiol-disulfide bonds exchange strategy for preparing the DCC keratin hydrogels. While the pH value of the keratin solution extracted by reducing agents was adjusted to 9.5-10.0, the keratin hydrogels showed the characteristic with injectability, self-healing, self-adapting, biocompatibility, and redox-responsive capacity. The extracted type II neutral/alkali keratin plays a critical role in imparting the keratin hydrogels with the reversibility behaviors due to that the keratins could build dynamic covalent bonds through thiol oxidation and disulfide exchange reactions in alkali conditions. This strategy provides an inspiration for forming DCC keratin hydrogel by avoiding the extra introduction of chemical crosslinking agents.
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Affiliation(s)
- Mianhong Chen
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
| | - Xingrong Ren
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
| | - Liming Dong
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China.
| | - Xiaohe Li
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, China
| | - Haiming Cheng
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China; National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, China.
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8
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He JJ, McCarthy C, Camci-Unal G. Development of Hydrogel‐Based Sprayable Wound Dressings for Second‐ and Third‐Degree Burns. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Jacqueline Jialu He
- Department of Chemical Engineering University of Massachusetts Lowell One University Avenue Lowell MA 01854 USA
- Biomedical Engineering and Biotechnology Program University of Massachusetts Lowell One University Avenue Lowell MA 01854 USA
| | - Colleen McCarthy
- Department of Chemical Engineering University of Massachusetts Lowell One University Avenue Lowell MA 01854 USA
| | - Gulden Camci-Unal
- Department of Chemical Engineering University of Massachusetts Lowell One University Avenue Lowell MA 01854 USA
- Department of Surgery University of Massachusetts Medical School 55 Lake Avenue Worcester MA 01655 USA
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9
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El Ayadi A, Wang CZ, Zhang M, Wetzel M, Prasai A, Finnerty CC, Enkhbaatar P, Herndon DN, Ansari NH. Metal chelation reduces skin epithelial inflammation and rescues epithelial cells from toxicity due to thermal injury in a rat model. BURNS & TRAUMA 2020; 8:tkaa024. [PMID: 33033727 PMCID: PMC7530369 DOI: 10.1093/burnst/tkaa024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/19/2020] [Indexed: 01/09/2023]
Abstract
BACKGROUND One of the most pervasive complications of burn injury is wound progression, characterized by continuous tissue destruction in untreated wounds, which leads to wound infection, inflammation, oxidative stress and excessive scar formation. We determined whether additional tissue destruction could be attenuated with Livionex formulation (LF) lotion, which contains a metal-chelating agent and reduces inflammation in burn wounds. METHODS We subjected male Sprague Dawley rats to a 2% total body surface area (TBSA) burn using a brass comb model and topically applied LF lotion (containing ethylenediaminetetraacetic acid and methyl sulfonyl methane) to the affected area every 8 hours over 3 days. Inflammatory cytokine levels, cell apoptosis and wound healing were compared in LF lotion-treated and untreated rats. Statistical analysis was performed using a one-way analysis of variance in conjunction with Tukey's post-hoc test. RESULTS Serum inflammatory cytokines were not detectable after 3 days, suggesting that small burn wounds induce only an immediate, localized inflammatory response. Microscopy revealed that LF lotion improved burn site pathology. Deoxynucleotidyl transferase biotin-d-UTP nick-end labeling staining showed reduced cell death in the LF-treated samples. LF lotion prevented the spread of tissue damage, as seen by increased amounts of Ki-67-positive nuclei in the adjacent epidermis and hair follicles. Tumor necrosis factor-alpha, interleukin-6 and inducible nitric oxide synthase levels in LF-treated skin sections from burned rats were comparable to the levels observed in unburned control sections, indicating that LF lotion reduces inflammation in and around the burn site. CONCLUSIONS These results establish LF lotion as a therapeutic agent for reducing inflammatory stress, cell death and tissue destruction when applied immediately after a burn injury. Further studies of LF lotion on large TBSA burns will determine its efficacy as an emergency treatment for reducing long-term morbidity and scarring.
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Affiliation(s)
- Amina El Ayadi
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Cheng Z Wang
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Min Zhang
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Michael Wetzel
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Anesh Prasai
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Celeste C Finnerty
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Perenlei Enkhbaatar
- Department of Anesthesiology, 301 University Blvd., University of Texas Medical Branch, Galveston, TX 77555, USA
| | - David N Herndon
- Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Naseem H Ansari
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
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10
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Wardhana A, Basuki A, Aurora L, Marsigit J. Comprehensive perception of burn conversion: a literature review. ANNALS OF BURNS AND FIRE DISASTERS 2020; 33:89-96. [PMID: 32913427 PMCID: PMC7452607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 03/10/2020] [Indexed: 06/11/2023]
Abstract
Burn conversion is the conversion of stasis zone into both greater burn area and burn depth. It may hamper the patient's condition since morbidity and mortality are expected to be higher with the increase of burn size. To gain a comprehensive perception of burn conversion, this study aims to collect the latest updates regarding therapy, diagnosis, etiology and prognosis. A literature search was carried out on online databases, namely PubMed, SCOPUS and PROQUEST. The keywords "Burns AND (Conversion OR Progression OR Expansion)" were formulated. The inclusion and exclusion criteria were applied. Twenty-six articles were found, which were divided into diagnosis of burn conversion (11%), etiology of burn conversion (8%), prognosis of burn conversion (0%), and therapy of burn conversion (81%). All of the research was performed on animals. One of the best tools to diagnose burn conversion was the forwardlooking infrared (FLIR) imaging, having sensitivity up to 96% and specificity up to 100% to predict scar depth ≥3 mm. The main etiology was ischemia, reactive oxygen species and inflammation. Most of the research regarding therapy showed benefit in preventing burn conversion. However, no side effects were investigated and not all of the research was statistically significant. More research on burn conversion prognosis and treatment side effects should be performed. Further research involving trials in humans should be conducted, since animal and human trials may differ.
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Affiliation(s)
- A. Wardhana
- Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - A. Basuki
- Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - L. Aurora
- Hermina Sukabumi Hospital, Sukabumi, West Java, Indonesia
| | - J. Marsigit
- Kramat 128 Hospital, Central Jakarta, Jakarta, Indonesia
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11
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McLellan J, Thornhill SG, Shelton S, Kumar M. Keratin-Based Biofilms, Hydrogels, and Biofibers. KERATIN AS A PROTEIN BIOPOLYMER 2019. [DOI: 10.1007/978-3-030-02901-2_7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Quintero-Ortega IA, Romero-Argote FJ, Tavares-Negrete JA, Elizalde-Peña EA, Carvajal García ZY, Pérez-Pérez CI, Sanchez IC, Luna-Bárcenas G, Rosillo-de la Torre A. Synthesis and characterization of simple and binary drug delivery systems for sustainable release of ciprofloxacin. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1534111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - Eduardo A. Elizalde-Peña
- Dirección de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Querétaro, México
| | - Zaira Y. Carvajal García
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Unidad de Biotecnología Medica y Farmacéutica, Guadalajara, México
| | | | - Isaac C. Sanchez
- Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas, USA
| | - Gabriel Luna-Bárcenas
- Grupo de Investigación en Polímeros y Biopolímeros, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, México
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13
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Mandla S, Davenport Huyer L, Radisic M. Review: Multimodal bioactive material approaches for wound healing. APL Bioeng 2018; 2:021503. [PMID: 31069297 PMCID: PMC6481710 DOI: 10.1063/1.5026773] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/28/2018] [Indexed: 01/13/2023] Open
Abstract
Wound healing is a highly complex process of tissue repair that relies on the synergistic effect of a number of different cells, cytokines, enzymes, and growth factors. A deregulation in this process can lead to the formation of a non-healing chronic ulcer. Current treatment options, such as collagen wound dressings, are unable to meet the demand set by the wound environment. Therefore, a multifaceted bioactive dressing is needed to elicit a targeted affect. Wound healing strategies seek to develop a targeted effect through the delivery of a bioactive molecule to the wound by a hydrogel or a polymeric scaffold. This review examines current biomaterial and small molecule-based approaches that seek to develop a bioactive material for targeted wound therapy and accepted wound healing models for testing material efficacy.
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Affiliation(s)
- Serena Mandla
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | | | - Milica Radisic
- Author to whom correspondence should be addressed: . Tel.: +1-416-946-5295. Fax: +1-416-978-4317
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Ponrasu T, Veerasubramanian PK, Kannan R, Gopika S, Suguna L, Muthuvijayan V. Morin incorporated polysaccharide–protein (psyllium–keratin) hydrogel scaffolds accelerate diabetic wound healing in Wistar rats. RSC Adv 2018; 8:2305-2314. [PMID: 35541447 PMCID: PMC9077386 DOI: 10.1039/c7ra10334d] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Accepted: 12/31/2017] [Indexed: 11/21/2022] Open
Abstract
Morin loaded polysaccharide–protein composite scaffolds enhance diabetic wound healing.
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Affiliation(s)
- Thangavel Ponrasu
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | | | - Ramya Kannan
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Selvakumar Gopika
- Department of Biochemistry
- CSIR-Central Leather Research Institute
- Council of Scientific and Industrial Research
- Chennai 600020
- India
| | - Lonchin Suguna
- Department of Biochemistry
- CSIR-Central Leather Research Institute
- Council of Scientific and Industrial Research
- Chennai 600020
- India
| | - Vignesh Muthuvijayan
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
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