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Chaker SC, Saad M, Mayes T, Lineaweaver WC. Burn Injury-related Growth Factor Expressions and Their Potential Roles in Burn-related Neuropathies. J Burn Care Res 2024; 45:25-31. [PMID: 37978864 DOI: 10.1093/jbcr/irad184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Indexed: 11/19/2023]
Abstract
In the context of burn injury, growth factors (GFs) play a significant role in mediating the complex local and systematic processes that occur. Among the many systemic complications that arise following a burn injury, peripheral neuropathy remains one of the most common. Despite the broad understanding of the effects GFs have on multiple tissues, their potential implications in both wound healing and neuropathy remain largely unexplored. Therefore, this review aims to investigate the expression patterns of GFs prominent during the burn wound healing process and explore the potential contributions these GFs have on the development of burn-related peripheral neuropathy.
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Affiliation(s)
- Sara C Chaker
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, 37232USA
| | - Mariam Saad
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, 37232USA
| | - Taylor Mayes
- Middle Tennessee State University, Murfreesboro, TN, 37132USA
| | - William C Lineaweaver
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, 37232USA
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2
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Cui H, Cai J, He H, Ding S, Long Y, Lin S. Tailored chitosan/glycerol micropatterned composite dressings by 3D printing for improved wound healing. Int J Biol Macromol 2024; 255:127952. [PMID: 37951437 DOI: 10.1016/j.ijbiomac.2023.127952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/26/2023] [Accepted: 10/30/2023] [Indexed: 11/14/2023]
Abstract
Wound infection control is a primary clinical concern nowadays. Various innovative solutions have been developed to fabricate adaptable wound dressings with better control of infected wound healing. This work presents a facile approach by leveraging 3D printing to fabricate chitosan/glycerol into composite dressings with tailored micropatterns to improve wound healing. The bioinks of chitosan/glycerol were investigated as suitable for 3D printing. Then, three tailored micropatterns (i.e., sheet, strip, and mesh) with precise geometry control were 3D printed onto a commercial dressing to fabricate the micropatterned composite dressings. In vitro and in vivo studies indicate that these micropatterned dressings could speed up wound healing due to their increased water uptake capacity (up to ca. 16-fold@2 min), benign cytotoxicity (76.7 % to 90.4 % of cell viability), minor hemolytic activity (<1 %), faster blood coagulation effects (within 76.3 s), low blood coagulation index (14.5 % to 18.7 % @ 6 min), enhanced antibacterial properties (81.0 % to 86.1 % against S. aureus, 83.7 % to 96.5 % against E. coli), and effective inhibition of wound inflammation factors of IL-1β and TNF-α. Such tailored micropatterned composite dressing is facile to obtain, highly reproducible, and cost-efficient, making it a promising implication for improved and personalized contaminated wound healing.
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Affiliation(s)
- Haoran Cui
- Systems Engineering Institute, Academy of Military Sciences, Tianjin 300161, People's Republic of China
| | - Junjie Cai
- Systems Engineering Institute, Academy of Military Sciences, Tianjin 300161, People's Republic of China; Bethune International Peace Hospital, Shijiazhuang 050051, People's Republic of China
| | - Hanjiao He
- Guizhou University of Traditional Chinese Medicine, Guiyang 550025, People's Republic of China
| | - Sheng Ding
- Systems Engineering Institute, Academy of Military Sciences, Tianjin 300161, People's Republic of China
| | - Yi Long
- Guizhou University of Traditional Chinese Medicine, Guiyang 550025, People's Republic of China.
| | - Song Lin
- Systems Engineering Institute, Academy of Military Sciences, Tianjin 300161, People's Republic of China.
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Shakhakarmi K, Seo JE, Lamichhane S, Thapa C, Lee S. EGF, a veteran of wound healing: highlights on its mode of action, clinical applications with focus on wound treatment, and recent drug delivery strategies. Arch Pharm Res 2023; 46:299-322. [PMID: 36928481 DOI: 10.1007/s12272-023-01444-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 03/09/2023] [Indexed: 03/18/2023]
Abstract
Epidermal growth factor (EGF) has been used in wound management and regenerative medicine since the late 1980s. It has been widely utilized for a long time and still is because of its excellent tolerability and efficacy. EGF has many applications in tissue engineering, cancer therapy, lung diseases, gastric ulcers, and wound healing. Nevertheless, its in vivo and during storage stability is a primary concern. This review focuses on the topical use of EGF, especially in chronic wound healing, the emerging use of biomaterials to deliver it, and future research possibilities. To successfully deliver EGF to wounds, a delivery system that is proteolytically resistant and stable over the long term is required. Biomaterials are an area of interest for the development of such systems. These systems may be used in non-healing wounds such as diabetic foot ulcers, pressure ulcers, and burns. In these pathologies, EGF can reduce the risk of amputation of the lower extremities, as it accelerates the wound healing process. Furthermore, appropriate delivery system would also stabilize and control the EGF release profile in a wound. Several in vitro and in vivo studies have already proven the efficacy of such systems in the above-mentioned types of wounds. Moreover, several formulations such as ointments and intralesional injections are already available on the market. However, these products are still problematic in terms of inadequate diffusion of EGF, low bioavailability storage conditions, and shelf-life. This review discusses the nano formulations comprising biomaterials infused with EGF which could be a promising delivery system for chronic wound healing in the future.
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Affiliation(s)
| | - Jo-Eun Seo
- College of Pharmacy, Keimyung University, Daegu, 704-701, Republic of Korea
| | | | - Chhitij Thapa
- College of Pharmacy, Keimyung University, Daegu, 704-701, Republic of Korea
| | - Sangkil Lee
- College of Pharmacy, Keimyung University, Daegu, 704-701, Republic of Korea.
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4
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Engineering pro-angiogenic biomaterials via chemoselective extracellular vesicle immobilization. Biomaterials 2021; 281:121357. [PMID: 34999538 DOI: 10.1016/j.biomaterials.2021.121357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/22/2021] [Accepted: 12/28/2021] [Indexed: 12/26/2022]
Abstract
Nanoscale extracellular vesicles (EVs) represent a unique cellular derivative that reflect the therapeutic potential of mesenchymal stem cells (MSCs) toward tissue engineering and injury repair without the logistical and safety concerns of utilizing living cells. However, upon systemic administration in vivo,EVs undergo rapid clearance and typically lack controlled targeted delivery, thus reducing their effectiveness in therapeutic regenerative therapies. Here, we describe a strategy that enables long-term in vivo spatial EV retention by chemoselective immobilization of metabolically incoporated azido ligand-bearing EVs (azido-EVs) within a dibenzocyclooctyne-modified collagen hydrogel. MSC-derived azido-EVs exhibit comparable morphological and functional properties as their non-labeled EV counterparts and, when immobilized within collagen hydrogel implants via click chemistry, they elicited more robust host cell infiltration, angiogenic and immunoregulatory responses including vascular ingrowth and macrophage recruitment compared to ten times the higher dose required by non-immobilized EVs. We envision this technology will enable a wide range of applications to spatially promote vascularization and host integration relevant to tissue engineering and regenerative medicine applications.
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Analysis of the Curative Effect and Influencing Factors of Collagen Sponge Combined with Autologous Skin Graft in the Treatment of Deep Burn Patients. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6963401. [PMID: 34737782 PMCID: PMC8563132 DOI: 10.1155/2021/6963401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 10/11/2021] [Indexed: 12/18/2022]
Abstract
Burn is one of the common traumatic diseases in clinics. After deep burn, the complicated changes of the condition are caused by the burn wound, which ends with the repair of the wound. For patients with deep burns, whether the wound can be repaired as soon as possible is the key to the success of clinical treatment. For patients with deep burns, due to the lack of an autologous skin source, scar hyperplasia at donor site, skin graft repair at donor site, postoperative flap necrosis, and other problems in traditional surgical procedures, the method of improving function only by an autologous skin source has been unable to perform the later function reconstruction in patients with deep burns. In this study, collagen sponge combined with autologous skin graft was used to treat patients with deep burn, and the clinical efficacy of the patients was observed, and the related factors affecting the efficacy of the patients were analyzed. The results showed that collagen sponge combined with autologous skin graft was effective in the treatment of deep burn patients, and it was worth popularizing. Deep III-IV degree burns, wound infection, and hospital stay >3 months are all risk factors affecting the postoperative curative effect of patients. Therefore, in the clinical work, we should focus on patients with deep III-IV degree burns, perform surgery as soon as possible, and actively deal with wounds to prevent infection, which is beneficial to improve the curative effect.
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Kaya O, Orhan E, Sapmaz-Metin M, Topçu-Tarladaçalışır Y, Gündüz Ö, Aydın B. The effects of epidermal growth factor on early burn-wound progression in rats. Dermatol Ther 2019; 33:e13196. [PMID: 31849151 DOI: 10.1111/dth.13196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/01/2019] [Accepted: 12/15/2019] [Indexed: 12/13/2022]
Abstract
After burns, protecting tissues by medicines in the zone of stasis reduces the width and depth of injury. This study's goal was to reduce burned tissue damage in the zone of stasis using epidermal growth factor (EGF). Forty-eight Wistar rats were separated into three groups. In all groups, the burn procedure was applied following the comb burn model. In Group 1, no postburn treatment was administered. In Group 2, physiological saline solution (0.3 cc) was injected intradermally and in Group 3, EGF (0.3 cc) was injected intradermally into stasis zone tissues after the burn procedure. Surviving tissue rates were 24.0% in Group 1, 25.3% in Group 2, and 70.2% in Group 3. The average numbers of cells stained with Nrf2, HO-1, and the number of apoptotic cells were 230, 150, and 17.5 in Group 1, 230, 145, and 15.0 in Group 2, and 370, 230, and 0 in Group 3, respectively. Values in Group 3 were found to be statistically significantly different than those of Groups 1 and 2; there was no difference between Groups 1 and 2. This study shows that EGF protects zone of stasis tissue from burn damage.
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Affiliation(s)
- Oktay Kaya
- Department of Physiology, Trakya University School of Medicine, Edirne, Turkey
| | - Erkan Orhan
- Department of Plastic Surgery, Gaziantep University, School of Medicine, Gaziantep, Turkey
| | - Melike Sapmaz-Metin
- Department of Histology and Embryology, Trakya University, School of Medicine, Edirne, Turkey
| | | | - Özgür Gündüz
- Department of Medical Pharmacology, Trakya University, School of Medicine, Edirne, Turkey
| | - Bilgehan Aydın
- Department of Plastic Surgery, Yeditepe University School of Medicine, Istanbul, Turkey
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Li J, Wang J, Wang Z, Xia Y, Zhou M, Zhong A, Sun J. Experimental models for cutaneous hypertrophic scar research. Wound Repair Regen 2019; 28:126-144. [PMID: 31509318 DOI: 10.1111/wrr.12760] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 08/29/2019] [Accepted: 09/06/2019] [Indexed: 01/07/2023]
Abstract
Human skin wound repair may result in various outcomes with most of them leading to scar formation. Commonly seen in many cutaneous wound healing cases, hypertrophic scars are considered as phenotypes of abnormal wound repair. To prevent the formation of hypertrophic scars, efforts have been made to understand the mechanism of scarring following wound closure. Numerous in vivo and in vitro models have been created to facilitate investigations into cutaneous scarring and the development of antiscarring treatments. To select the best model for a specific study, background knowledge of the current models of hypertrophic scars is necessary. In this review, we describe in vivo and in vitro models for studying hypertrophic scars, as well as the distinct characteristics of these models. The choice of models for a specific study should be based on the characteristics of the model and the goal of the study. In general, in vivo animal models are often used in phenotypical scar formation analysis, development of antiscarring treatment, and functional analyses of individual genes. In contrast, in vitro models are chosen to pathway identification during scar formation as well as in high-throughput analysis in drug development. Besides helping investigators choose the best scarring model for their research, the goal of this review is to provide knowledge for improving the existing models and development of new models. These will contribute to the progress of scarring studies.
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Affiliation(s)
- Jialun Li
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Jiecong Wang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Zhenxing Wang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Yun Xia
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Muran Zhou
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Aimei Zhong
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Jiaming Sun
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
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Copes F, Pien N, Van Vlierberghe S, Boccafoschi F, Mantovani D. Collagen-Based Tissue Engineering Strategies for Vascular Medicine. Front Bioeng Biotechnol 2019; 7:166. [PMID: 31355194 PMCID: PMC6639767 DOI: 10.3389/fbioe.2019.00166] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 06/24/2019] [Indexed: 12/21/2022] Open
Abstract
Cardiovascular diseases (CVDs) account for the 31% of total death per year, making them the first cause of death in the world. Atherosclerosis is at the root of the most life-threatening CVDs. Vascular bypass/replacement surgery is the primary therapy for patients with atherosclerosis. The use of polymeric grafts for this application is still burdened by high-rate failure, mostly caused by thrombosis and neointima hyperplasia at the implantation site. As a solution for these problems, the fast re-establishment of a functional endothelial cell (EC) layer has been proposed, representing a strategy of crucial importance to reduce these adverse outcomes. Implant modifications using molecules and growth factors with the aim of speeding up the re-endothelialization process has been proposed over the last years. Collagen, by virtue of several favorable properties, has been widely studied for its application in vascular graft enrichment, mainly as a coating for vascular graft luminal surface and as a drug delivery system for the release of pro-endothelialization factors. Collagen coatings provide receptor-ligand binding sites for ECs on the graft surface and, at the same time, act as biological sealants, effectively reducing graft porosity. The development of collagen-based drug delivery systems, in which small-molecule and protein-based drugs are immobilized within a collagen scaffold in order to control their release for biomedical applications, has been widely explored. These systems help in protecting the biological activity of the loaded molecules while slowing their diffusion from collagen scaffolds, providing optimal effects on the targeted vascular cells. Moreover, collagen-based vascular tissue engineering substitutes, despite not showing yet optimal mechanical properties for their use in the therapy, have shown a high potential as physiologically relevant models for the study of cardiovascular therapeutic drugs and diseases. In this review, the current state of the art about the use of collagen-based strategies, mainly as a coating material for the functionalization of vascular graft luminal surface, as a drug delivery system for the release of pro-endothelialization factors, and as physiologically relevant in vitro vascular models, and the future trend in this field of research will be presented and discussed.
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Affiliation(s)
- Francesco Copes
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec City, QC, Canada
- Laboratory of Human Anatomy, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Nele Pien
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec City, QC, Canada
- Polymer Chemistry & Biomaterials Group, Department of Organic and Macromolecular Chemistry, Centre of Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry & Biomaterials Group, Department of Organic and Macromolecular Chemistry, Centre of Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - Francesca Boccafoschi
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec City, QC, Canada
- Laboratory of Human Anatomy, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec City, QC, Canada
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Chen J, Li H, Chen J. Human epidermal growth factor coupled to different structural classes of cell penetrating peptides: A comparative study. Int J Biol Macromol 2017; 105:336-345. [DOI: 10.1016/j.ijbiomac.2017.07.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 04/30/2017] [Accepted: 07/06/2017] [Indexed: 12/25/2022]
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10
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Pandit AP, Patel SA, Bhanushali VP, Kulkarni VS, Kakad VD. Nebivolol-Loaded Microsponge Gel for Healing of Diabetic Wound. AAPS PharmSciTech 2017; 18:846-854. [PMID: 27357423 DOI: 10.1208/s12249-016-0574-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 06/13/2016] [Indexed: 01/07/2023] Open
Abstract
An attempt was made to formulate nebivolol-loaded microsponge gel to access drug at wound area, incorporated into gel that possess optimum moist wound management environment during later stages of wound closure. Nebivolol, antihypertensive drug, exhibits vasodilating effects via nitric oxide pathway, slows diabetic neuropathy, and restores endothelial function in diabetic wounds. Microsponges were prepared by optimizing independent variables; drug to polymer ratio and internal phase volume and their effects on production yield, entrapment efficiency, and particle size. Formulations of microsponges were evaluated for drug content. Differential scanning calorimetry indicated reduction in crystallinity of NB during the formation of microsponges. In vitro study (drug to polymer 1:4 and 10 ml internal phase volume acetone) showed 80% drug released within 8 h. Spherical and porous microsponges confirmed by scanning electron microscopy were incorporated in the carbopol 934 (2%) gel base. Gel was characterized for pH, viscosity, and drug content. Less spreadability determined by texture analyzer demonstrated viscous nature of gel. In vitro diffusion study revealed entrapped drug in porous microsponges with slow release to heal wound. In vivo study performed using streptozotocin-induced diabetic rats and excision wound model showed wound healing and closure activity within day 10. Histology revealed inflammatory cell infiltrations and neovascularization in granulation tissues, ultimately healing wound. Microsponge gel prolonged drug release due to entrapped form in porous structure of microsponges with significant and fast wound healing and closure in diabetic rats. Microsponges with loaded drug fulfilled accessibility at wound area, while gel provided optimum moist wound management environment during later stages of wound closure.
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Ogino S, Morimoto N, Sakamoto M, Jinno C, Taira T, Suzuki S. Efficacy of gelatin gel sheets sustaining epidermal growth factor for murine skin defects. J Surg Res 2015; 201:446-54. [PMID: 27020831 DOI: 10.1016/j.jss.2015.11.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 10/05/2015] [Accepted: 11/18/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Epidermal growth factor (EGF) plays an important role in wound healing. However, EGF must be applied daily due to rapid inactivation in vivo. We investigated the sustained release of EGF from gelatin gel sheets (GGSs) and the efficacy of GGSs impregnated with EGF for promoting wound healing. MATERIALS AND METHODS GGSs impregnated with EGF were prepared by cross-linking via glutaraldehyde to gelatin solution containing EGF. The sustained release of EGF and the bioactivity of released EGF were evaluated. Then, three kinds of GGSs containing NSS (normal saline solution; NSS group), 2.5 μg of EGF (EGF-L group), or 25 μg of EGF (EGF-H group) were applied to full-thickness skin defects created on the backs of mice. The wounds covered with polyurethane film without GGS were used as a control (PUF group). The wound area, neoepithelium length, regenerated granulation tissue, and newly formed capillaries were evaluated. RESULTS EGF was sustained and released from GGS as it degraded. The bioactivity of released EGF was confirmed. EGF-L group promoted the neoepithelium length, regenerated granulation tissue, and newly formed capillaries compared with those in the PUF and NSS groups. The area of regenerated granulation tissue in the NSS group (week 1: 2.6 + 0.2 mm(2), week 2: 2.8 + 0.3 mm(2)) was larger than that in the PUF group (week 1: 0.6 + 0.1 mm(2), week 2: 1.0 + 0.1 mm(2)). The area of newly formed capillaries in the EGF-L group (9967 + 1903 μm(2)) was larger than that of the EGF-H group (3485 + 1050 μm(2)). CONCLUSIONS GGSs impregnated with EGF-L showed promising results regarding wound healing.
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Affiliation(s)
- Shuichi Ogino
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Naoki Morimoto
- Department of Plastic and Reconstructive Surgery, Kansai Medical University, Hirakata, Japan.
| | - Michiharu Sakamoto
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Chizuru Jinno
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | | | - Shigehiko Suzuki
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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12
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Delgado LM, Bayon Y, Pandit A, Zeugolis DI. To cross-link or not to cross-link? Cross-linking associated foreign body response of collagen-based devices. TISSUE ENGINEERING PART B-REVIEWS 2015; 21:298-313. [PMID: 25517923 DOI: 10.1089/ten.teb.2014.0290] [Citation(s) in RCA: 174] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Collagen-based devices, in various physical conformations, are extensively used for tissue engineering and regenerative medicine applications. Given that the natural cross-linking pathway of collagen does not occur in vitro, chemical, physical, and biological cross-linking methods have been assessed over the years to control mechanical stability, degradation rate, and immunogenicity of the device upon implantation. Although in vitro data demonstrate that mechanical properties and degradation rate can be accurately controlled as a function of the cross-linking method utilized, preclinical and clinical data indicate that cross-linking methods employed may have adverse effects on host response, especially when potent cross-linking methods are employed. Experimental data suggest that more suitable cross-linking methods should be developed to achieve a balance between stability and functional remodeling.
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Affiliation(s)
- Luis M Delgado
- 1Network of Excellence for Functional Biomaterials, National University of Ireland, Galway, Galway, Ireland
| | - Yves Bayon
- 2Covidien - Sofradim Production, Trévoux, France
| | - Abhay Pandit
- 3Network of Excellence for Functional Biomaterials, National University of Ireland, Galway, Galway, Ireland
| | - Dimitrios I Zeugolis
- 3Network of Excellence for Functional Biomaterials, National University of Ireland, Galway, Galway, Ireland
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13
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Jin G, Prabhakaran MP, Ramakrishna S. Photosensitive and biomimetic core-shell nanofibrous scaffolds as wound dressing. Photochem Photobiol 2014; 90:673-81. [PMID: 24417712 DOI: 10.1111/php.12238] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 01/06/2014] [Indexed: 12/19/2022]
Abstract
Tissue engineered skin grafts that mimic the native extracellular matrix of skin has gained huge popularity among clinicians since they increase the survival rate of the patients. Phototherapy shows promising results with respect to acute and chronic pain relief, treatment of inflammatory conditions and promotion of wound healing. Here, we encapsulated a photosensitive polymer poly (3-hexylthiophene) (P3HT) and epidermal growth factor in the core-shell-structured Gelatin/poly(L-lactic acid)-co-poly-(ε-caprolactone) nanofibers [Gel/PLLCL/P3GF(cs)] by coaxial spinning and studied the potential application of the Gel/PLLCL/P3GF(cs) nanofibrous scaffold as a novel skin graft. The proliferation of fibroblasts was significantly improved on Gel/PLLCL/P3GF(cs) under light stimulation compared to fibroblasts on the same scaffold under dark condition. Studies on the in vitro wound healing ability of Gel/PLLCL/P3GF(cs) showed complete closure of wound after 9 days under "light stimulation" too. Furthermore, the potential of adipose-derived stem cells (ASCs) to differentiate to epidermal cells on Gel/PLLCL/P3GF(cs) was evaluated. The differentiated ASCs with keratinocytes morphology were only found on the light stimulated Gel/PLLCL/P3GF(cs). Our results suggest that the photosensitive core-shell Gel/PLLCL/P3GF(cs) nanofibers could be a novel substrate to aid in the reestablishment of skin architecture.
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Affiliation(s)
- Guorui Jin
- Department of Mechanical Engineering, National University of Singapore, Singapore; Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
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14
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Yamamoto A, Shimizu N, Kuroyanagi Y. Potential of wound dressing composed of hyaluronic acid containing epidermal growth factor to enhance cytokine production by fibroblasts. J Artif Organs 2013; 16:489-94. [DOI: 10.1007/s10047-013-0726-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 08/15/2013] [Indexed: 10/26/2022]
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15
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Kim HS, Yoo HS. In vitro and in vivo epidermal growth factor gene therapy for diabetic ulcers with electrospun fibrous meshes. Acta Biomater 2013; 9:7371-80. [PMID: 23528498 DOI: 10.1016/j.actbio.2013.03.018] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 03/13/2013] [Accepted: 03/13/2013] [Indexed: 12/30/2022]
Abstract
Human epidermal growth factor (hEGF) gene therapy was achieved with an electrospun nanofibrous mesh with matrix metalloproteinase (MMP) responsiveness to control release of plasmid human epidermal growth factor (phEGF) in diabetic ulcers. For MMP responsiveness, linear poly(ethyleneimine) (LPEI) was immobilized on the surface of the nanofiber via an MMP-cleavable linker. phEGF was electrostatically incorporated into LPEI-immobilized nanofibrous meshes with various charge ratios and phEGF incorporation efficiency was increased with increasing charge ratios. The release of both phEGF and LPEI was significantly increased in the presence of MMP-2 due to the enzymatic digestion of the MMP-cleavable linkage between the matrix and LPEI. Human dermal fibroblasts with the released fraction showed a higher expression level of hEGF compared to naked phEGF or phEGF/LPEI complexes. Diabetic wounds treated with phEGF-incorporated nanofibrous meshes showed high hEGF expression level and accelerated wound recovery rates without wound contractions for 14days. Neocollagen and cytokeratin accumulation were significantly increased as well as the expression of the keratinocyte-specific markers at the re-epithelized tissue treated with phEGF nanofibrous meshes, which clearly indicates that EGF gene was transfected to dermal cells and this consequently assisted wound recovery without phenotypic changes of the re-epithelized tissues. Thus, phEGF-incorporated nanofibrous mesh is expected to accelerate the wound-healing process as well as reduce wound contraction during recovery from diabetic ulcers.
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Pan J, Xue W, Chen Q, Chen Y, Chen H, Huang Y. Antifibrotic role of captopril after ureteral injury. Urol Int 2012; 89:418-24. [PMID: 22965010 DOI: 10.1159/000341790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Accepted: 07/11/2012] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To evaluate the antifibrotic role of captopril during ureteral scarring in a New Zealand rabbit model. MATERIALS AND METHODS The tissue expression and the fluctuation of EGF, TGF-β, FN, Col Ia1, Col Ia2 and Col III of the impaired ureter and the contralateral normal ureter were investigated by RT-PCR. The histological changes of the specimens were studied. When the sensitive markers had been selected, 10 New Zealand rabbits were randomly assigned to a captopril group and a control group. The specimens were harvested 2 weeks after the injury and then the histological examination and RT-PCR were performed. RESULTS By RT-PCR screening, EGF, TGF-β, FN, Col Ia1 and Col Ia2 were found to be significantly related to ureteral scarring (p < 0.05) confirmed by histological examination. The peak level of EGF, TGF-β and Col Ia1 appeared at 2 weeks after the injury, while for Fn and Col Ia2 it was at 3 and 4 weeks after the injury. An obvious reduction of fibrotic scarring was observed in the captopril group. The expression of EGF, Fn and Col Ia2 in the captopril group was significantly lower than in the control group (p < 0.05) after the treatment. CONCLUSIONS EGF, TGF-β, Col Ia1, Col Ia2 and FN seemed to have an important role in the ureteral scarring after injury. Captopril might partially inhibit the fibrotic process by blocking the EGF, Col Ia2 and FN pathway so that it could be a promising treatment after ureteral injury.
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Affiliation(s)
- Jiahua Pan
- Department of Urology, Renji Hospital affiliated to Shanghai Jiaotong University, School of Medicine, No. 1630 Dong Fang Road, Shanghai, PR China
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Al Azrak M, Ismail T, Shaker O. Evaluation of the potentials of autologous blood injection for healing in diabetic foot ulcers. J Am Coll Clin Wound Spec 2012; 4:45-50. [PMID: 24527383 DOI: 10.1016/j.jccw.2013.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 06/21/2013] [Accepted: 06/28/2013] [Indexed: 01/13/2023] Open
Abstract
Healing is a complex multifactorial process, hence it is not easy to be studied accurately. In this paper we tried to demonstrate the potentials of application of autologous blood by injection into the raw areas and ulcers of three diabetic patients using their blood as an alternative to synthesized and cultured stem cells or growth factors. It was found that a natural easily obtained blood can be used to enrich the media of the wound. Also it was applicable in relation to its cost-effectiveness as well as availability. The healing process was accelerated in the injected side more than the non-injected one.
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Affiliation(s)
- Mohammed Al Azrak
- Burn & Plastic Surgery Unit, Fayoum General Hospital & PhD researcher in Plastic Surgery Division, Surgery department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Taher Ismail
- Plastic Surgery Division, Surgery Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Olfat Shaker
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
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Kondo S, Niiyama H, Yu A, Kuroyanagi Y. Evaluation of a Wound Dressing Composed of Hyaluronic Acid and Collagen Sponge Containing Epidermal Growth Factor in Diabetic Mice. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 23:1729-40. [DOI: 10.1163/092050611x597799] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Shinya Kondo
- a R&D Center for Artificial Skin, School of Allied Health Sciences, Kitasato University , 1-15-1 Kitasato, Minami-ku, Sagamihara , Kanagawa , 252-0373 , Japan
| | - Hayato Niiyama
- a R&D Center for Artificial Skin, School of Allied Health Sciences, Kitasato University , 1-15-1 Kitasato, Minami-ku, Sagamihara , Kanagawa , 252-0373 , Japan
| | - Akane Yu
- a R&D Center for Artificial Skin, School of Allied Health Sciences, Kitasato University , 1-15-1 Kitasato, Minami-ku, Sagamihara , Kanagawa , 252-0373 , Japan
| | - Yoshimitsu Kuroyanagi
- a R&D Center for Artificial Skin, School of Allied Health Sciences, Kitasato University , 1-15-1 Kitasato, Minami-ku, Sagamihara , Kanagawa , 252-0373 , Japan
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Matsumoto Y, Kuroyanagi Y. Development of a Wound Dressing Composed of Hyaluronic Acid Sponge Containing Arginine and Epidermal Growth Factor. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 21:715-26. [DOI: 10.1163/156856209x435844] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Yasuhiro Matsumoto
- a R&D Center for Artificial Skin, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Sagamihara, Kanagawa 228-8555, Japan.
| | - Yoshimitsu Kuroyanagi
- b R&D Center for Artificial Skin, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Sagamihara, Kanagawa 228-8555, Japan
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Chao CYL, Zheng YP, Cheing GLY. A novel noncontact method to assess the biomechanical properties of wound tissue. Wound Repair Regen 2011; 19:324-9. [PMID: 21539649 DOI: 10.1111/j.1524-475x.2011.00694.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel noncontact optical coherence tomography based air-jet indentation system was developed for characterizing the biomechanical properties of soft tissue in a noncontact way. This study aimed to measure the stiffness of diabetic foot ulcer tissues by using this air-jet indentation system, and examining the test/retest reliability. Eight subjects with diabetes (seven males, one female), with a total of 10 foot ulcers between them, participated in the study. A total of 20 measuring sites located at the central wound bed (n=10) or peri-ulcer areas (n=10), respectively, were evaluated with the air-jet indentation system. Four cycles of loading and unloading, each with a duration of approximately 36 seconds at an indentation rate of 0.08 mm/s, were carried out for each indentation trial. The test/retest reliability was examined at all measuring points. The average stiffness coefficient of the peri-ulcer area (mean ± SD: 0.47 ± 0.15 N/mm) was significantly larger than that of the central wound bed area (mean ± SD: 0.35 ± 0.23 N/mm; p=0.042). A high value for test/retest reliability was shown (intraclass correlation coefficient: 0.986; Pearson's correlation: r=0.972, p<0.001). Our preliminary findings showed that the peri-ulcer area had greater stiffness than the central wound bed. This greater magnitude of hardness and inelasticity at the peri-ulcer region may scatter part of the contractile forces for wound contraction during the healing process. We found the novel air-jet system to be a reliable tool for characterizing the stiffness of soft tissues around the wound in a noncontact way.
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Affiliation(s)
- Clare Y L Chao
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China
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Kondo S, Kuroyanagi Y. Development of a wound dressing composed of hyaluronic acid and collagen sponge with epidermal growth factor. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2011; 23:629-43. [PMID: 21375805 DOI: 10.1163/092050611x555687] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This study was designed to investigate the effect of a wound dressing composed of hyaluronic acid (HA) and collagen (Col) sponge containing epidermal growth factor (EGF) on various parameters of wound healing in vitro and in vivo. High-molecular-weight (HMW) HA solution, hydrolyzed low-molecular-weight (LMW) HA solution and heat-denatured Col solution were mixed, followed by freeze-drying to obtain a spongy sheet. Cross-linkage between Col molecules was induced by UV irradiation to the spongy sheet (Type-I dressing). In a similar manner, a spongy sheet containing EGF was prepared (Type-II dressing). The efficacy of these products was firstly evaluated in vitro. Fibroblast proliferation was assessed in culture medium in the presence or absence of a piece of each wound dressing. EGF stimulated cell proliferation after UV irradiation and dry sterilization at 110°C for 1 h. In the second experiment, fibroblasts-embedded Col gels were elevated to the air-liquid interface to create a wound surface model, on which wound dressings were placed and cultured for 1 week. Cell proliferation and the production of vascular endothelial growth factor (VEGF) and hepatocyte growth factor (HGF) were investigated. With Type-II dressings, the amounts of VEGF and HGF released from fibroblasts in the Col gel were significantly increased compared with Type-I dressing. Next, the efficacy of these products was evaluated in vivo using Sprague-Dawley (SD) rats. Wound conditions after 1 and 2 weeks of treatment with the wound dressings were evaluated based on the gross and histological appearances. Type-II dressings promoted a decrease in wound size, re-epithelialization and granulation tissue formation associated with angiogenesis. These findings indicate that the combination of HA, Col and EGF promotes wound healing by stimulating fibroblast function.
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Affiliation(s)
- Shinya Kondo
- R&D Center for Artificial Skin, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0374, Japan.
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Lin S, Xu H, Xiao J, Liu Y, Zhang Y, Cai L, Li X, Tan Y. Combined Use of Acid Fibroblast Growth Factor, Granulocyte Colony-stimulating Factor and Zinc Sulphate Accelerates Diabetic Ulcer Healing. ACTA ACUST UNITED AC 2009. [DOI: 10.1248/jhs.55.910] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Shaoqiang Lin
- The Chinese-American Research Institute for Diabetic Complications
- Key Laboratory of Biotechnology Pharmaceutical Engineering Wenzhou Medical College
| | - Hengwu Xu
- The Chinese-American Research Institute for Diabetic Complications
- Key Laboratory of Biotechnology Pharmaceutical Engineering Wenzhou Medical College
| | - Jian Xiao
- The Chinese-American Research Institute for Diabetic Complications
- Key Laboratory of Biotechnology Pharmaceutical Engineering Wenzhou Medical College
| | - Yanlong Liu
- The Chinese-American Research Institute for Diabetic Complications
- Key Laboratory of Biotechnology Pharmaceutical Engineering Wenzhou Medical College
| | - Yi Zhang
- The Chinese-American Research Institute for Diabetic Complications
| | - Lu Cai
- The Chinese-American Research Institute for Diabetic Complications
- Department of Pediatrics, the University of Louisville
| | - Xiaokun Li
- The Chinese-American Research Institute for Diabetic Complications
- Key Laboratory of Biotechnology Pharmaceutical Engineering Wenzhou Medical College
| | - Yi Tan
- The Chinese-American Research Institute for Diabetic Complications
- Key Laboratory of Biotechnology Pharmaceutical Engineering Wenzhou Medical College
- Department of Pediatrics, the University of Louisville
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Tan Y, Xiao J, Huang Z, Xiao Y, Lin S, Jin L, Feng W, Cai L, Li X. Comparison of the Therapeutic Effects Recombinant Human Acidic and Basic Fibroblast Growth Factors in Wound Healing in Diabetic Patients. ACTA ACUST UNITED AC 2008. [DOI: 10.1248/jhs.54.432] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yi Tan
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical College
- Key Laboratory of Biotechnology Pharmaceutical Engineering, Wenzhou Medical College
- Departments of Medicine, Radiation Oncology, and Pharmacology and Toxicology, University of Louisville
| | - Jian Xiao
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical College
- Key Laboratory of Biotechnology Pharmaceutical Engineering, Wenzhou Medical College
| | - Zhifeng Huang
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical College
- Key Laboratory of Biotechnology Pharmaceutical Engineering, Wenzhou Medical College
| | - Yechen Xiao
- Biopharmaceutics and Bioreactor Research Center, Ministry of Education, Jilin Agriculture University
| | - Shaoqiang Lin
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical College
- Key Laboratory of Biotechnology Pharmaceutical Engineering, Wenzhou Medical College
| | - Litai Jin
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical College
- Key Laboratory of Biotechnology Pharmaceutical Engineering, Wenzhou Medical College
| | - Wenke Feng
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical College
- Departments of Medicine, Radiation Oncology, and Pharmacology and Toxicology, University of Louisville
| | - Lu Cai
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical College
- Departments of Medicine, Radiation Oncology, and Pharmacology and Toxicology, University of Louisville
| | - Xiaokun Li
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical College
- Key Laboratory of Biotechnology Pharmaceutical Engineering, Wenzhou Medical College
- Departments of Medicine, Radiation Oncology, and Pharmacology and Toxicology, University of Louisville
- National Engineering Research Center for Gene Medicine, Jinan University
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Wang W, Lin S, Xiao Y, Huang Y, Tan Y, Cai L, Li X. Acceleration of diabetic wound healing with chitosan-crosslinked collagen sponge containing recombinant human acidic fibroblast growth factor in healing-impaired STZ diabetic rats. Life Sci 2008; 82:190-204. [DOI: 10.1016/j.lfs.2007.11.009] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2007] [Revised: 10/20/2007] [Accepted: 11/02/2007] [Indexed: 01/13/2023]
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Abstract
Wound healing is a complex interchange, orchestrated between cellular components that play their respective parts signaled by and mediated by different cellular instruments of healing. When healing is performed well, the final product is a thing of beauty. When healing is delayed, interrupted, or excessive, then unsightly scars of chronic painful wounds that are frustrating to the patient and physician occur.
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Affiliation(s)
- Margaret K Strecker-McGraw
- Department of Emergency Medicine, Scott and White Hospital, Texas A&M University College of Medicine, 2401 S. 31st Street, Temple, TX 76504, USA.
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