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de Seixas JRPC, Ribeiro KA, de Souza AA, da Silva CE, Pedra-Fixe MG, Lima-Ribeiro MHM, Silva Neto JDC, Barros W, Martins RD, Coelho LCBB, Correia MTS, Soares PAG, Carneiro-da-Cunha MG. Hydrogels based on galactomannan and κ-carrageenan containing immobilized biomolecules for in vivo thermal-burn wound treatment. Int J Biol Macromol 2024; 270:132379. [PMID: 38754680 DOI: 10.1016/j.ijbiomac.2024.132379] [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: 10/10/2023] [Revised: 05/06/2024] [Accepted: 05/12/2024] [Indexed: 05/18/2024]
Abstract
Hydrogels based on natural polysaccharides have demonstrated efficacy in epithelial recovery from cutaneous burn wounds. Here, we prepared a double-network hydrogel consisting of galactomannan (from Cassia grandis seeds) and κ-carrageenan (commercially sourced), cross-linked with CaCl2, as a matrix for immobilizing lactoferrin and/or Cramoll, aiming at its applicability as dressings for second-degree burn wounds. The formulations obtained [H - hydrogel, HL - hydrogel + lactoferrin, HC - hydrogel + Cramoll and HLC - hydrogel + lactoferrin + Cramoll] were analyzed rheologically as well as in terms of their stability (pH, color, microbial contamination) for 90 days. The burn was created with an aluminum bar (97 ± 3 °C) in the dorsal region of Wistar rats and subsequently treated with hydrogels (H, HL, HC, HLC) and control saline solution (S). The burn was monitored for 3, 7 and 14 days to evaluate the efficacy of the hydrogels in promoting wound healing. The hydrogels did not reveal significant pH or microbiological changes; there was an increase in brightness and a reduction in opacity for H. The rheological analysis confirmed the gel-like viscoelastic signature of the systems without substantial modification of the basic rheological characteristics, however HLC proved to be more rigid, due to rheological synergy when combining protein biomolecules. Macroscopic analyses confirmed centripetal healing with wound contraction: S < H < HC < HL < HLC. Histopathological analyses showed that hydrogel-treated groups reduced inflammation, tissue necrosis and fibrosis, while promoting re-epithelialization with focal acanthosis, especially in HLC due to a positive synergistic effect, indicating its potential as a promising therapy in the repair of burns.
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Affiliation(s)
- José R P C de Seixas
- Department of Biochemistry, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Kátia A Ribeiro
- Department of Biochemistry, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Andrea A de Souza
- Department of Biochemistry, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil; Keizo Asami Institute (iLIKA), UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP 50670-901 Recife, Pernambuco, Brazil
| | - Cecília E da Silva
- Department of Histology and Embryology, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Maxwelinne G Pedra-Fixe
- Department of Histology and Embryology, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Maria H M Lima-Ribeiro
- Keizo Asami Institute (iLIKA), UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP 50670-901 Recife, Pernambuco, Brazil
| | - Jacinto da C Silva Neto
- Department of Histology and Embryology, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Wilson Barros
- Department of Physics, Universidade Federal de Pernambuco (UFPE), Av. Prof. Luiz Freire s/n, Cidade Universitária, CEP 50670-901 Recife, Pernambuco, Brazil
| | - René D Martins
- Department of Pharmacy, Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Rua do Alto do Reservatorio, S/N Bela Vista, CEP 55600-000 Vitória de Santo Antão, Pernambuco, Brazil
| | - Luana C B B Coelho
- Department of Biochemistry, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Maria T S Correia
- Department of Biochemistry, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Paulo A G Soares
- Department of Biochemistry, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil; Keizo Asami Institute (iLIKA), UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP 50670-901 Recife, Pernambuco, Brazil.
| | - Maria G Carneiro-da-Cunha
- Department of Biochemistry, UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil; Keizo Asami Institute (iLIKA), UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP 50670-901 Recife, Pernambuco, Brazil.
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Josh F, Soekamto T, Windura C, Lumalessil D. The Combination of Stromal Vascular Fraction Cells and Platelet-Rich Plasma Increases Fibroblast Growth Factor 2 and Insulin-Like Growth Factor 1 in Full-Thickness Burns in Animal Model. ANNALS OF BURNS AND FIRE DISASTERS 2024; 37:35-44. [PMID: 38680831 PMCID: PMC11041884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/10/2023] [Indexed: 05/01/2024]
Abstract
The previous study on the injection of SVFs in combination with PRP showed positive effect on the healing of deep dermal burns. We now seek to understand the effect on full thickness burns, as assessed by changes in serum FGF2, IGF1, epithelialization, and fibroblast count. Forty-eight Wistar rats were randomly divided into four groups: (1) rats with full thickness burns given a local injection of combined SVFs and PRP; (2) rats with burns given topical Vaseline; (3) rats with burns given a local injection of placebo; and (4) rats without burns. Primary data were measured according to the time of euthanasia (at the 8th hour, 4th day, 7th day, 14th day or 21st day). One-way ANOVA test followed by post hoc test were used. Epithelialization in rats who received SVFs and PRP was superior on days 7, 14 and 21 when compared to the other groups. The fibroblast count in rats who received SVFs and PRP showed significant difference on days 7 (p=0.022). Significant differences in serum FGF2 were observed on days 4, 7, 14 and 21 (p=0.003, p=0.001, p=0.024, p=0.038, respectively). A significant difference was also observed in serum IGF1 levels on days 7, 14 and 21 (p=0.043, p=0.003, p=0.045, respectively), and the combination of SVFs and PRP showed superior results compared to other groups. Injection of combined SVFs and PRP increases FGF2, IGF1, fibroblast count, and epithelialization.
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Affiliation(s)
- F. Josh
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
| | - T.H. Soekamto
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Dr. Wahidin Sudirohusodo Hospital, Makassar, Indonesia
| | - C.A. Windura
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
| | - D.G. Lumalessil
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
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Giri VP, Pandey S, Shukla P, Gupta SC, Srivastava M, Rao CV, Shukla SV, Dwivedi A, Mishra A. Facile Fabrication of Sandalwood Oil-Based Nanoemulsion to Intensify the Fatty Acid Composition in Burned and Rough Skin. ACS OMEGA 2024; 9:6305-6315. [PMID: 38371762 PMCID: PMC10870268 DOI: 10.1021/acsomega.3c03811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 12/06/2023] [Accepted: 12/28/2023] [Indexed: 02/20/2024]
Abstract
The restoration process of burned and rough skin takes a long time and remains a critical challenge. It can be repaired through a combination of proper care, hydration, and topical therapies. In this study, a novel nanoemulsion was synthesized through the high-energy ultrasonication method. A total of five nanoemulsions (NE1-5) were prepared with varying concentrations of sandalwood oil, a nonionic surfactant (polysorbate 80), and water. Among them, NE3 had a number of appropriate physicochemical characteristics, such as physiological pH (5.58 ± 0.09), refractive index (∼1.34), electrical conductivity (115 ± 0.23 mS cm-1), and transmittance (∼96.5%), which were suitable for skin care applications. The NE3 had a strong surface potential of -18.5 ± 0.15 mV and a hydrodynamic size of 61.99 ± 0.22 nm with a polydispersity index of 0.204. The structural integrity and a distinct droplet size range between 50 and 100 nm were confirmed by transmission electron microscopic analysis. The skin regeneration and restoration abilities of synthesized nanoemulsions were examined by conducting an in vivo study on Sprague-Dawley rats. Exposure to NE3 significantly increased the healing process in burned skin as compared to untreated control and nonemulsified sandalwood oil. In another set of experiments, the NE3-treated rough skin became softer, smoother, and less scaly than all other treatments. Enhanced fatty acids, i.e., palmitic acid, stearic acid, and cholesterol, were recorded in NE3-supplemented burned and rough skin compared to the untreated control. The NE3 had outstanding compatibility with key components of skincare products without any stability issues. Its biocompatibility with the cellular system was established by the negligible generation of reactive oxygen species (ROS) and a lack of genotoxicity. Considering these results, NE3 can be used in cosmetic products such as creams, lotions, and serums, allowing industries to achieve improved product formulations and provide better healthcare benefits to humanity.
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Affiliation(s)
- Ved Prakash Giri
- Microbial
Technology Division, CSIR-National Botanical
Research Institute, Lucknow 226001, India
| | - Shipra Pandey
- Microbial
Technology Division, CSIR-National Botanical
Research Institute, Lucknow 226001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pallavi Shukla
- Microbial
Technology Division, CSIR-National Botanical
Research Institute, Lucknow 226001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sateesh Chandra Gupta
- Pharmacology
Division, CSIR-National Botanical Research
Institute, Lucknow 226001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Manjoosha Srivastava
- Phytochemistry
Division, CSIR-National Botanical Research
Institute, Lucknow 226001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Chandana Venkateswara Rao
- Pharmacology
Division, CSIR-National Botanical Research
Institute, Lucknow 226001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | | | - Ashish Dwivedi
- Photobiology
Division, CSIR-Indian Institute of Toxicology
Research, Lucknow 226001, India
| | - Aradhana Mishra
- Microbial
Technology Division, CSIR-National Botanical
Research Institute, Lucknow 226001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Ahmed MAM, Ali MF, Mohamed NM, Bayoumi SAL, Zahran AM, Elsayh KI. Exploring the efficacy of various wheat bran extracts in promoting burn wound healing: A comparative analysis. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117174. [PMID: 37709105 DOI: 10.1016/j.jep.2023.117174] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/08/2023] [Accepted: 09/10/2023] [Indexed: 09/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Although burn wound management in medical practice has improved, the challenge still exists and demands multidisciplinary participation. Wheat has been extensively used as a remedy of different skin conditions especially burns in almost all parts of Italy. However, the mechanism is still unclear. AIM OF THE STUDY To examine the effects of different wheat bran extracts on the healing of burn wound estimated grossly, histopathologically, and immunologically. MATERIALS AND METHODS Wistar male rats were divided into 5 groups; (control) saline treated group, Mebo (Moist Exposed Burn Ointment), cold-water extract, hot-water extract and methanolic extract groups. After the burn, four groups from the experimental groups were treated with Mebo, cold-water extract, hot-water extract and methanolic extract, respectively, but the negative-control group was treated daily with saline only. The observation was made along days 0, 5, 9, 13, 17 and 21. At the end of the study, rats were sacrificed, and blood samples were collected for biochemical and cytokines estimation in addition to wound samples were collected for histopathological and immunohistochemical studies. RESULTS The histopathological examination showed that the inflammation was significantly decreased in all extract-treated groups when compared with saline and Mebo-treated groups. Epithelial tissue and granulation tissue formation most significantly appeared in the cold water extract-treated group. CONCLUSIONS Cold water and methanolic extract groups showed the most rapid and effective healing of the burn wound. Particularly the cold-water extract, due to the sufficient concentration of zinc and phenolic components.
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Affiliation(s)
- Mai A M Ahmed
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt.
| | - Marwa F Ali
- Department of Pathology and Clinical Pathology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Nesma M Mohamed
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt; Department of Pharmacognosy, Faculty of Pharmacy, Badr University in Assiut, Assiut, Egypt
| | - Soad A L Bayoumi
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
| | - Asmaa M Zahran
- Clinical Pathology Department, South Egypt Cancer Institute, Assiut University, Assiut, Egypt
| | - Khalid I Elsayh
- Department of Pediatrics, Faculty of Medicine, Assiut University, Assiut, Egypt
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Shalaby ES, Aboutaleb S, Ismail SA, Yassen NN, Sedik AA. Chitosan tamarind-based nanoparticles as a promising approach for topical application of curcumin intended for burn healing: in vitro and in vivo study. J Drug Target 2023; 31:1081-1097. [PMID: 37886815 DOI: 10.1080/1061186x.2023.2276662] [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: 06/13/2023] [Accepted: 10/21/2023] [Indexed: 10/28/2023]
Abstract
One of the most prevalent worldwide problems that affect all ages and genders is skin burn. The goal of our study was to assess the ability of curcumin nanoparticles to cure a rat burn model. Three formulations were selected after several tests were performed including investigation of encapsulation efficiency, particle size and zeta potential measurements. In vitro release was achieved on the three selected formulations. The effectiveness of the chosen formulation for healing was evaluated. The induced burn wound was smeared, starting just after excision, once daily with curcumin nanoparticles for 18 days. Our findings revealed that curcumin nanoparticles improved the burn healing potential by augmenting the skin regeneration indices as evidenced by enhancing the new production of hyaluronic acid and collagen type I. Additionally, curcumin nanoparticles could increase levels of vascular endothelial growth factor and alpha smooth muscle activity while drastically reducing the skin's tumour necrosis factor content, revealing a significant potential for burn healing process that is also reflected in the histopathological and immunohistochemical studies. Finally, our results demonstrated that curcumin nanoparticles revealed a significant potential for burn healing than curcumin alone due to its potent antimicrobial, antioxidant and anti-inflammatory properties.
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Affiliation(s)
- Eman S Shalaby
- Pharmaceutical Technology Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Cairo, Egypt
| | - Sally Aboutaleb
- Pharmaceutical Technology Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Cairo, Egypt
| | - Shaymaa A Ismail
- Department of Chemistry of Natural and Microbial Products, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Cairo, Egypt
| | - Noha N Yassen
- Pathology Department, National Research Centre, Cairo, Egypt
| | - Ahmed A Sedik
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, Cairo, Egypt
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Souza AA, Ribeiro KA, Seixas JRPC, Silva Neto JC, Santiago MGPF, Aragão-Neto AC, Lima-Ribeiro MHM, Borba EFO, Silva TG, Kennedy JF, Albuquerque PBS, Carneiro-da-Cunha MG. Effects including photobiomodulation of galactomannan gel from Cassia grandis seeds in the healing process of second-degree burns. Int J Biol Macromol 2023; 251:126213. [PMID: 37567532 DOI: 10.1016/j.ijbiomac.2023.126213] [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: 12/23/2022] [Revised: 07/06/2023] [Accepted: 08/05/2023] [Indexed: 08/13/2023]
Abstract
The epithelium recovery of skin-burned wounds has been currently achieved by several therapies, for example, hydrogel-based dressings and photobiomodulation therapy (PBMT). Thus, this work aimed to evaluate the healing activity of Cassia grandis seeds' galactomannan gel, associated or not with PBMT, in second-degree burns. Sixty male Wistar rats were assigned to four groups: Control (CG), Gel (GG), Laser/PBMT (LG), and Laser+Gel (GLG). Burns were made with an aluminum bar (90 °C), and submitted to clinical observations diary and area measurements at specific days. Microscopic analysis was based on histological criteria. The results showed that GG, LG, and GLG had a higher contraction rate (p < 0.05) than CG on the 14th experimental day, not differing from each other (∼95 %). At 21 days, all groups showed complete contraction (p > 0.05). Considering the histological results, LG and GLG showed excellent pro-wound healing properties after 14 days; at 21 days, all groups showed wound recovery compared to previous days. In view of the macroscopic and microscopic observations, the isolated treatments (Gel or Laser) effectively accelerated healing; however, the association (Laser+Gel) promoted re-epithelialization and stromal remodeling with better evolution of epithelium recovery due to the positive synergistic effect, thus emerging as a promising therapeutic alternative in the repair of burns.
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Affiliation(s)
- Andrea A Souza
- Graduate Program in Biology Applied to Health (PPGBAS), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP, 50670-900 Recife, Pernambuco, Brazil; Department of Biochemistry/UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Katia A Ribeiro
- Department of Biochemistry/UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - José Roberto P C Seixas
- Department of Biochemistry/UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Jacinto C Silva Neto
- Department of Histology and Embryology/UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Maxwelinne G P F Santiago
- Department of Histology and Embryology/UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil
| | - Adelmo C Aragão-Neto
- Tiradentes de Pernambuco University Center (UNIT), Av. Caxangá, 4453, Várzea, CEP, 50740-000 Recife, Pernambuco, Brazil
| | - Maria H M Lima-Ribeiro
- Keizo Asami Institute (iLIKA)/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP, 50670-900 Recife, Pernambuco, Brazil
| | - Elizabeth F O Borba
- Department of Antibiotics/UFPE, Av. Prof. Moraes Rego, s/n, CEP 50670-901 Recife, Pernambuco, Brazil
| | - Teresinha G Silva
- Department of Antibiotics/UFPE, Av. Prof. Moraes Rego, s/n, CEP 50670-901 Recife, Pernambuco, Brazil
| | - John F Kennedy
- Chembiotech Research, Tenbury Wells, WR15 8FF, Worcestershire, United Kingdom
| | - Priscilla B S Albuquerque
- Keizo Asami Institute (iLIKA)/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP, 50670-900 Recife, Pernambuco, Brazil; Department of Medicine, University of Pernambuco/UPE, Campus Garanhuns, Rua Cap. Pedro Rodrigues, CEP, 55294-902 Garanhuns, Pernambuco, Brazil.
| | - Maria G Carneiro-da-Cunha
- Graduate Program in Biology Applied to Health (PPGBAS), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP, 50670-900 Recife, Pernambuco, Brazil; Department of Biochemistry/UFPE, Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP 50670-420 Recife, Pernambuco, Brazil; Keizo Asami Institute (iLIKA)/UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP, 50670-900 Recife, Pernambuco, Brazil.
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Tammam BM, Habotta OA, El-khadragy M, Abdel Moneim AE, Abdalla MS. Therapeutic role of mesenchymal stem cells and platelet-rich plasma on skin burn healing and rejuvenation: A focus on scar regulation, oxido-inflammatory stress and apoptotic mechanisms. Heliyon 2023; 9:e19452. [PMID: 37662797 PMCID: PMC10472052 DOI: 10.1016/j.heliyon.2023.e19452] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 08/19/2023] [Accepted: 08/23/2023] [Indexed: 09/05/2023] Open
Abstract
Cell-based therapies have great promise in accelerating and improving burn wound healing. It is a growing need to scale their competence to meet the clinical demands. In this study, the bone marrow mesenchymal stem cells (BMSCs) and platelet-rich plasma (PRP) were tested on the repair of induced burn wounds in a murine model. After the induction of thermal injury, rats were injected with BMSCs and/or PRP in the burn area. After 4 weeks of post-burn, our findings revealed that local treatment of burnt skin with BMSCs and/or PRP offered substantial outcomes when compared with the untreated group. Injected burn with BMSCs and/or PRP enhanced the wound contraction rate and decreased the burn area and period of epithelization. Significant increases in VEGF together with declines in MMP-9 and TGF-β1 were observed in burnt areas after being treated with BMSCs and/or PRP therapy that indicated improved angiogenesis, and re-epithelization. Furthermore, both MSCs and PRP modulated the burn's oxidative and inflammatory microenvironment as indicated by increases in SOD, CAT, and GSH besides declines in MDA, IL-6, TNF-α, NF-κB, NO, and iNOS. Notable increases in Bcl-2 levels and decreases in Cas-3 and Bax levels were recorded in burnt skin that received both agents concomitantly. Interestingly, the histopathological examination validates the healing power of BMSCs and/or PRP. Collectively, BMSCs and PRP have pioneered therapeutics candidates for clinical application in burn healing possibly via antioxidant, anti-inflammatory, and anti-apoptotic mechanisms along with regulating angiogenesis and scar formation.
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Affiliation(s)
- Bakinam M.H. Tammam
- Chemistry Department, Molecular biotechnology Division, Faculty of Science, Helwan University, Cairo, Egypt
| | - Ola A. Habotta
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Manal El-khadragy
- Biology Department, Faculty of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Ahmed E. Abdel Moneim
- Zoology and Entomology Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Mohga S. Abdalla
- Chemistry Department, Molecular biotechnology Division, Faculty of Science, Helwan University, Cairo, Egypt
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8
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Josh F, Soekamto T, Windura C. The Combination of Stromal Vascular Fraction Cells and Platelet-Rich Plasma Increases Fibroblast Growth Factor 7 and Promotes Angiogenesis in Full Thickness Burn Injury: Rat Experimental Study. ANNALS OF BURNS AND FIRE DISASTERS 2023; 36:234-242. [PMID: 38680441 PMCID: PMC11042045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 06/22/2022] [Indexed: 05/01/2024]
Abstract
Our previous study on how the combination of stromal vascular fraction cells (SVFs) and platelet-rich plasma (PRP) affect deep dermal burn healing showed promising results. In this study, we assessed the effect on full-thickness burns by evaluating FGF7 serum level and capillary count. Forty-eight Wistar rats were divided into four major groups: (1) locally injected with combined SVFs and PRP; (2) topically applied Vaseline; (3) locally injected with placebo; (4) and rats without burns. These groups were divided further into smaller groups based on the day of euthanasia (8th hour, 4th day, 7th day, 14th day, and 21st day). FGF7 serum level was measured using ELISA, and capillaries were counted using a microscope. A one-way ANOVA test, post hoc, and regression tests were used. On day 4, both FGF7 and capillary counts showed significant differences between groups (p=0.000 and 0.048, respectively). On day 7, only FGF7 result showed a significant difference (p=0.000). On day 14, FGF7 and capillary counts showed significant differences (p=0.000, 0.018 respectively). The SVFs and PRP-treated groups showed superior results compared to other groups. The injection of combined SVFs and PRP increased FGF7 and capillary counts.
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Affiliation(s)
- F. Josh
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
| | - T.H. Soekamto
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Dr. Wahidin Sudirohusodo Hospital, Makassar, Indonesia
| | - C.A. Windura
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
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9
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Saghafi Y, Baharifar H, Najmoddin N, Asefnejad A, Maleki H, Sajjadi-Jazi SM, Bonkdar A, Shams F, Khoshnevisan K. Bromelain- and Silver Nanoparticle-Loaded Polycaprolactone/Chitosan Nanofibrous Dressings for Skin Wound Healing. Gels 2023; 9:672. [PMID: 37623127 PMCID: PMC10454236 DOI: 10.3390/gels9080672] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/07/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023] Open
Abstract
A cutaneous wound is caused by various injuries in the skin, which can be wrapped with an efficient dressing. Electrospinning is a straightforward adjustable technique that quickly and continuously generates nanofibrous wound dressings containing antibacterial and anti-inflammatory agents to promote wound healing. The present study investigated the physicochemical and biological properties of bromelain (BRO)- and silver nanoparticle (Ag NPs)-loaded gel-based electrospun polycaprolactone/chitosan (PCL/CS) nanofibrous dressings for wound-healing applications. Electron microscopy results showed that the obtained nanofibers (NFs) had a uniform and homogeneous morphology without beads with an average diameter of 176 ± 63 nm. The FTIR (Fourier transform infrared) analysis exhibited the loading of the components. Moreover, adding BRO and Ag NPs increased the tensile strength of the NFs up to 4.59 MPa. BRO and Ag NPs did not significantly affect the hydrophilicity and toxicity of the obtained wound dressing; however, the antibacterial activity against E. coli and S. aureus bacteria was significantly improved. The in vivo study showed that the wound dressing containing BRO and Ag NPs improved the wound-healing process within one week compared to other groups. Therefore, gel-based PCL/CS nanofibrous dressings containing BRO and Ag NPs could be a promising solution for healing skin wounds.
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Affiliation(s)
- Yasaman Saghafi
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran; (Y.S.); (N.N.)
| | - Hadi Baharifar
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran; (Y.S.); (N.N.)
- Applied Biophotonics Research Center, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran
- Research and Development Team, Evolution Wound Dressing (EWD) Startup Co., Tehran 1983963113, Iran
| | - Najmeh Najmoddin
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran; (Y.S.); (N.N.)
| | - Azadeh Asefnejad
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran; (Y.S.); (N.N.)
| | - Hassan Maleki
- Research and Development Team, Evolution Wound Dressing (EWD) Startup Co., Tehran 1983963113, Iran
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
| | - Sayed Mahmoud Sajjadi-Jazi
- Research and Development Team, Evolution Wound Dressing (EWD) Startup Co., Tehran 1983963113, Iran
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran 1411713137, Iran
| | - Alireza Bonkdar
- Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran 1983963113, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran 1983963113, Iran;
| | - Forough Shams
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran 1983963113, Iran;
| | - Kamyar Khoshnevisan
- Research and Development Team, Evolution Wound Dressing (EWD) Startup Co., Tehran 1983963113, Iran
- Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran 1983963113, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran 1983963113, Iran;
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Photopolymerized silk fibroin gel for advanced burn wound care. Int J Biol Macromol 2023; 233:123569. [PMID: 36758758 DOI: 10.1016/j.ijbiomac.2023.123569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/24/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023]
Abstract
The future of burn wound treatment lies in developing bioactive dressings for faster and more effective healing and regeneration. Silk fibroin (SF) hydrogels have proven regenerative abilities and are being explored as a burn wound dressing. However, unfavorable gelation conditions limit the processability and clinical application. Herein a white light-responsive photopolymerization technique was adapted for gelation via photooxidation of tyrosine. To render the gel suitable for application to irregular and non-planar burn surfaces, SF gel-incorporated dressing (SFD) was fabricated. The mild gelation conditions using white light afforded the loading of drugs for local delivery. The moisture balance ability of the dressing was confirmed by the favorable measures of swelling capacity (106 ± 1 %) and moisture retention (≈10 h). The in vitro cytocompatibility of the gel was confirmed using HaCaT cells. Finally, in vivo performance of the SFD was tested on a second-degree burn in a rodent model. The gross analysis and histological assessment revealed scarless healing in SFD-treated groups. Overall, the SFD developed in this work is shown to be a promising candidate for advanced burn wound care.
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11
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Ibrahim N‘I, Mohamed IN, Mohamed N, Mohd Ramli ES, Shuid AN. The effects of aqueous extract of Labisia Pumila (Blume) Fern.-Vill. Var. Alata on wound contraction, hydroxyproline content and histological assessments in superficial partial thickness of second-degree burn model. Front Pharmacol 2022; 13:968664. [PMID: 36313379 PMCID: PMC9596991 DOI: 10.3389/fphar.2022.968664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 09/26/2022] [Indexed: 11/30/2022] Open
Abstract
Background: Burns are considered a critical care problem in emergency medicine, resulting in physical, psychological, and chronic disabilities. Silver sulfadiazine is the gold standard in topical burn treatment but was associated with toxicity to keratinocytes and fibroblasts, which may delay wound healing. In discovering potential alternative treatments for burn wound healing, this study was performed to determine the effect of Labisia Pumila (Blume) Fern.-Vill. Var. Alata (LPVa) extract on thermal-burn wounds in rats. Methods: A total of 50 Sprague-Dawley male rats were categorized into five groups. There were three control groups; normal control (left untreated), negative control (given ointment base) and positive control (given silver sulfadiazine). Meanwhile, the two intervention groups were given with 2% LPVa leaf and root extracts, respectively. Burn wounds were inflicted on the loin region of the rat by applying a heated steel rod at 80°C for 10 s. On days 3, 7, 14, and 21, wounds were measured macroscopically using a digital calliper and one animals of each group were sacrificed, and the wounded skin were excised for histomorphological assessments. The wounds were excised for hydroxyproline content on Day 14 of treatment. Result: For wound contraction percentage, both the leaf and root extracts of LPVa showed a significant reduction in burn wound size on Day 7 onwards, when compared to other groups. For hydroxyproline content, only the leaf extract of LPVa produced significantly higher content compared to both negative and normal control groups. In terms of histological examination, the leaf extract group demonstrated a superior healing effect than the root extract group. Conclusion: Both leaf and root extracts of LPVa could promote wound healing in the thermal-burn wound rat model, with leaf extract being superior to root extract.
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Affiliation(s)
- Nurul ‘Izzah Ibrahim
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Isa Naina Mohamed
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Norazlina Mohamed
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Elvy Suhana Mohd Ramli
- Department of Anatomy, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, , Kuala Lumpur, Malaysia
| | - Ahmad Nazrun Shuid
- Department of Pharmacology, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Jalan Hospital, Sungai Buloh, Selangor, Malaysia
- *Correspondence: Ahmad Nazrun Shuid,
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12
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Yoksa DT, Abba Y, Shamaki BU, Satumari NA. Effects of resveratrol topical ointment on wound healing of full-thickness cutaneous burns in albino rats. J Wound Care 2022; 31:780-791. [PMID: 36113542 DOI: 10.12968/jowc.2022.31.9.780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE In this study, the effects of resveratrol topical ointment on wound contraction and histopathology of full-thickness cutaneous burn wounds were evaluated. METHOD Adult albino rats were grouped into four equal-sized groups of 15 rats each, as follows: Group A-no wound, no treatment (control); Group B-1% silver sulphadiazine; Group C-5% resveratrol, and Group D-wound without treatment (control). A burn wound measuring 23.5mm was created on the skin at the dorsum of all rats in groups B-D after shaving. The percentage of wound contraction was measured using a digital Vernier Caliper on days 1, 3, 5, 7, 10, 14, 16, 18 and 21, post-wounding. From each group, five rats were then euthanised and tissue samples of the skin, liver and kidney were collected in 10% buffered formalin for histopathology. RESULTS The percentage of wound contraction was significant (p<0.05) on 7, 14 and 18 days post treatment. Histopathologically, 5% resveratrol topical ointment application resulted in a thicker epidermis with neovascularisation and an increased collagen distribution. Resveratrol topical ointment ameliorated the extent of hepatocellular and nephrotubular injuries following burn-induced hepatocellular and acute kidney injuries. CONCLUSION In this study, topical application of 5% resveratrol ointment appeared to enhance burn wound healing by increasing the rate of wound contraction through collagen fibre synthesis, granulation tissue formation and epithelial regeneration.
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Affiliation(s)
- Daniel T Yoksa
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Maiduguri, PMB 1069 Maiduguri, Borno State
| | - Yusuf Abba
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Maiduguri, PMB 1069 Maiduguri, Borno State
| | - Bala U Shamaki
- Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Maiduguri, PMB 1069 Maiduguri, Borno State
| | - Ngamarju A Satumari
- Department of Medical Laboratory Science, Faculty of Allied Health Sciences, University of Maiduguri, PMB 1069 Maiduguri, Borno State
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Hiramatsu Y, Utsumi T, Higuchi H, Hayashi J, Horimatsu T, Nikaido M, Nakanishi Y, Shimizu T, Muto M, Seno H. Thermal tissue damage caused by new endoscope model due to light absorption. J Gastroenterol Hepatol 2022; 37:1801-1805. [PMID: 35861136 DOI: 10.1111/jgh.15963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/05/2022] [Accepted: 07/11/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM Bright endoscopic light sources improve the visibility of the intestinal mucosa. A newly launched endoscopic system developed by Olympus Corporation (Tokyo, Japan) in 2020 required modification to prevent heat-induced tissue damage, which reportedly occurs during magnifying chromoendoscopy. We investigated the mechanism of this phenomenon by evaluating the rise in temperature of stained and unstained porcine mucosa using the new and previous endoscopic systems. METHODS Surface temperatures of stained (India ink, 0.05% crystal violet, 0.5% methylene blue, or 0.2% indigo carmine) and unstained porcine mucosa were evaluated using infrared imaging after contact with the new endoscopic system before it was modified (system-EVIS X1; scope-GIF-EZ1500) and compared with a previous endoscopic system (system-EVIS EXERAIII; scope-GIF-H190). We performed histological analysis of the porcine mucosa stained with 0.05% crystal violet after contact with the new endoscope to evaluate the degree of tissue damage. RESULTS Surface temperatures remained < 40°C when the new endoscope was in contact with the unstained mucosa. However, the maximum surface temperature rose to > 70°C when the new endoscope was in contact with the stained mucosa (stained other than indigo carmine). Histological analysis revealed cavity formation in porcine epithelium stained with crystal violet where the endoscope made contact for ≥ 5 s . Using the previous endoscope, the maximum surface temperature of stained mucosa remained below approximately 60°C, and the surface temperature of the unstained mucosa remained below 30°C. CONCLUSIONS Heat transfer by light absorption could cause heat-induced tissue damage during magnifying chromoendoscopy using the new endoscope.
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Affiliation(s)
- Yukiko Hiramatsu
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takahiro Utsumi
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hirokazu Higuchi
- Department of Medical Equipment, Kyoto University Hospital, Kyoto, Japan
| | - Jun Hayashi
- Department of Energy Conversion Science, Kyoto University, Kyoto, Japan
| | - Takahiro Horimatsu
- Institute for Advancement of Clinical and Translational Science (iACT), Kyoto University Hospital, Kyoto, Japan
| | - Mitsuhiro Nikaido
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuki Nakanishi
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takahiro Shimizu
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Manabu Muto
- Department of Therapeutic Oncology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hiroshi Seno
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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14
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Phytochemical profile, in vivo anti-inflammatory and wound healing activities of the aqueous extract from aerial parts of Cistus ladanifer L. J Pharm Biomed Anal 2022; 219:114960. [PMID: 35914506 DOI: 10.1016/j.jpba.2022.114960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 01/22/2023]
Abstract
Cistus ladanifer L. is a Mediterranean shrub, well recognized for its many pharmacological properties. The present study aimed to investigate the phytochemical profile, the in vivo anti-inflammatory and the wound healing activities of the aqueous extract from its aerial parts (AECL). The in vivo anti-inflammatory and the wound healing properties were evaluated by carrageenan-induced paw edema (CAECL) and burn wound in rats, respectively. The results showed that six compounds belonging to flavonoids and tannins were identified in the AECL extract. Moreover, the AECL administrated orally at a dose of 500 mg/kg significantly reduced edema with a percentage of 72 % in terms of inflammation inhibition, using indomethacin as reference drug. On the other hand, when administrated topically, both doses of CAECL cream (5 % and 10 %) manifested a significant anti-inflammatory action using diclofenac as reference drug with a percentage reduction of inflammation that reached 85 % (CAECL-10). As far as wound healing is concerned, the CAECL showed higher effect at a dose of 10 % (CAECL-10) producing a wound contraction of 96 %, similar to that of the reference drug. The findings of the present study indicate that the aqueous extract from aerial parts of Cistus ladanifer L. display strongly anti-inflammatory and wound healing effects to be advantageously used for medical purposes.
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15
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Optimization, Characterization and In Vivo Evaluation of Mupirocin Nanocrystals for Topical Administration. Eur J Pharm Sci 2022; 176:106251. [PMID: 35788029 DOI: 10.1016/j.ejps.2022.106251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 06/14/2022] [Accepted: 06/29/2022] [Indexed: 11/22/2022]
Abstract
Treatment of infectious skin conditions resulting from wounds and burns with topical antibiotics is challenging, particularly those caused by methicillin-resistant Staphylococcus aureus bacteria (MRSA). This is due to the formation of bacterial biofilms characterized by antimicrobial resistance. Mupirocin (MP), a widely used topical antibiotic, is active against gram-positive bacteria including MRSA. However, MP suffers from sub-optimal therapeutic efficacy due to its poor water-solubility and the significant rise in MP-resistant S. aureus. In this study, the physico-chemical characteristics of MP were modified through nanocrystallization to improve its therapeutic efficacy for the treatment of skin infections. Mupirocin-nanocrystals (MP-NC) were prepared using a nanoprecipitation technique and optimized using a D-optimal response surface design. The optimization of MP-NC produced ultra-small monodisperse spherical particles with a mean diameter of 70 nm and a polydispersity index of 0.2. The design resulted in two optimal MP-NC formulations that were evaluated by performing series of in vitro, ex vivo, microbiological, and in vivo studies. In-vitro results showed a 10-fold increase in the saturation solubility and a 9-fold increase in the dissolution rate of MP-NC. Ex vivo permeation studies, using pig ears skin, showed a 2-fold increase in the dermal deposition of MP-NC with the highest drug deposition occurring at 500-µm skin depth. Moreover, the optimal MP-NC formulations were lyophilized and incorporated into a 2% w/w cream. Microbiological studies revealed a 16-fold decrease in the minimum inhibitory concentration and the minimum bactericidal concentration of MP-NC. In vivo studies, using a rat excision burn wound model, demonstrated rapid and complete healing of infected burn wounds in rats treated with MP-NC cream in comparison to marketed Avoban ointment. Our results suggest that nanocrystallization of MP may provide an avenue through which higher levels of a topically applied MP can be permeated into the skin to reach relevant infectious areas and exert potential local antibacterial effects.
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16
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Emerging Approach for the Application of Hibiscus sabdariffa Extract Ointment in the Superficial Burn Care. Sci Pharm 2022. [DOI: 10.3390/scipharm90030041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Wound healing comprises organized events involving tissue repair and regeneration. The discovery of toll-like receptors (TLRs) sheds recent light on the mechanisms involved in initiating inflammatory responses throughout the healing cascades. Hibiscus sabdariffa (HS) components may exhibit a wound healing action, owing to their antioxidant and anti-inflammatory activities. This study was designed to investigate the early effects of HS loaded in an ointment base on wound healing, antioxidant, antimicrobial effects, burning intensity, and histopathological features on the rat burn model in comparison to the standard treatment, Iruxol® ointment. A burn injury model was used to evaluate the wound healing potency of the preparation. Rats were treated with ointments three times on the day of the induction of the burn. Findings revealed that the strong antioxidant properties of the HS-loaded ointment augmented the skin healing potential by stimulating biomarkers required for skin regeneration. HS repressed the burning-induced inflammation by the effective reduction in the levels of tumor necrosis factor α (TNF-α) and IL-6 through TLR4 protein inhibition. Topical HS downregulates transforming growth factor-beta (TGF-β) levels. HS extract possesses a potential bactericidal activity against highly resistant clinical isolates of Pseudomonas aeruginosa. Overall, this study proclaims that HS-loaded topical preparations could be a valuable product that serves as adjuvants to accelerate burn wound healing through inactivating the TLR4 pathway.
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17
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Asghar A, Aamir MN, Sheikh FA, Ahmad N, Alotaibi NF, Bukhari SNA. Preparation, Characterization of Pregabalin and Withania coagulans Extract-Loaded Topical Gel and Their Comparative Effect on Burn Injury. Gels 2022; 8:gels8070402. [PMID: 35877487 PMCID: PMC9318109 DOI: 10.3390/gels8070402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/14/2022] [Accepted: 06/16/2022] [Indexed: 11/24/2022] Open
Abstract
The current study depicts the comparative effects of nanogel using Withania coagulans extract, pregabalin alone, and a co-combination gel. The gels prepared were then analyzed for conductivity, viscosity, spread ability, globule size, zeta potential, polydispersity index, and TEM. The globule size of the co-combination gel, determined by zeta sizer, was found to be (329 ± 0.573 nm). FTIR analysis confirms the successful development of gel, without any interaction. Drug distribution at the molecular level was confirmed by XRD. DSC revealed no bigger thermal changes. TEM images revealed spherical molecules with sizes of 200 nm for the co-combination gel. In vivo studies were carried out by infliction of third degree burn wounds on rat skin, and they confirmed that pregabalin and Withania coagulans heals the wound more effectively, with a wound contraction rate of 89.95%, compared to remaining groups. Anti-inflammatory activity (IL-6 and TNF-α), determined by the ELISA technique, shows that the co-combination gel group reduces the maximum inflammation with TNF-α value (132.2 pg/mL), compared to the control (140.22 pg/mL). Similarly, the IL-6 value was found to be (78 pg/mL) for the co-combination gel and (81 pg/mL) in the case of the control. Histopathologically, the co-combination gel heals wounds more quickly, compared to individual gel. These outcomes depict that a co-combination gel using plant extracts and drugs can be successfully used to treat burn injury.
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Affiliation(s)
- Anam Asghar
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan;
| | - Muhammad Naeem Aamir
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
- School of Pharmacy, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
- Correspondence: or
| | | | - Naveed Ahmad
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka 72388, Saudi Arabia;
| | - Nasser F. Alotaibi
- Chemistry Department, College of Science, Jouf University, Sakaka 72388, Saudi Arabia;
| | - Syed Nasir Abbas Bukhari
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka 72388, Saudi Arabia;
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Atiba A, Abdo W, Ali EK, Abd-Elsalam M, Amer M, Abdel Monsef A, Taha R, Antar S, Mahmoud A. Topical and oral applications of Aloe vera improve healing of deep second-degree burns in rats via modulation of growth factors. Biomarkers 2022; 27:608-617. [PMID: 35734963 DOI: 10.1080/1354750x.2022.2085800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Introduction: Burn injuries are underappreciated injuries that cause significant morbidity and mortality. Burn injuries, especially severe burns, trigger immunological and inflammatory responses, metabolic abnormalities, and distributive shock, all of which can be extended to multiple organ failures. Aloe vera (A. vera) has been exploited for its medicinal properties for centuries. The goal of the present study is to examine the therapeutic effect of topical and oral administration of A. vera against deep second-degree burn in rats. Materials and methods: skin burn was created on the back of rats, and wound healing was assessed within the three examined groups; control, topical A. vera and oral A. vera throughout 30 days. Wound tissues were examined histologically, immunohistochemically for the expression of transforming growth factor beta-1 (TGF-β1), peroxiredoxin (Prdx6), and mRNA abundance of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) was assessed. Results: Our finding showed acceleration of wound contraction with both topical and oral A. vera administration. Maturation of granulation tissues was seen in both A. vera-supplemented groups. The topical application of A. vera revealed marked remodelling of the granulation tissues and higher expression levels of TGF-β1, VEGF, bFGF, and Prdx6 in comparison with control and oral A. vera groups (P < 0.001). Conclusion: Both oral and topical applications of A. vera have beneficial effects in deep second-degree burn wound healing by boosting the growth factors and antioxidant status of skin tissue. The topical treatment was more efficient in accelerating wound healing and hence could be used efficiently to treat second-degree burns.
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Affiliation(s)
- Ayman Atiba
- Department of Surgery, Anesthesiology and Radiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt; (A.A.)
| | - Walied Abdo
- Department of Pathology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt; (W.A.)
| | - Ehab K Ali
- Departments of Anatomy and Embryology, Faculty of Medicine, Al-Azhar University, New Damietta, Egypt; (E.K.A.)
| | - Marwa Abd-Elsalam
- Department of Histology, Faculty of Medicine, Kafrelsheikh University, Kafr Elsheikh 33516, Egypt; (M.M.A.)
| | - Mohamed Amer
- Department of Histology, Faculty of Medicine, Al-Azhar University, New Damietta, Egypt; (M.E.A.)
| | - Ahmed Abdel Monsef
- Department of Physiology, Faculty of Medicine, Al-Azhar University, New Damietta, Egypt; (A.S.A.)
| | - Reda Taha
- Departments of Anatomy and Embryology, Faculty of Medicine, Al-Azhar, University, New Damietta, Egypt; (R.S.T.)
| | - Samar Antar
- Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Horus University, New Damietta, 34518, Egypt; (S.A.A.)
| | - Ayman Mahmoud
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Egypt; (A.M.M.).,Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester M1 5GD, UK; (A.M.M.)
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A Novel Distachionate from Breynia distachia Treats Inflammations by Modulating COX-2 and Inflammatory Cytokines in Rat Liver Tissue. Molecules 2022; 27:molecules27082596. [PMID: 35458792 PMCID: PMC9027007 DOI: 10.3390/molecules27082596] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/19/2022] [Accepted: 03/21/2022] [Indexed: 02/05/2023] Open
Abstract
Breynia distachia is a plant of genus Breynia belonging to family Phyllanthaceae. This study was conducted to isolate and examine the anti-inflammatory attributes of the roots of Breynia distachia. Methanol extract from roots were prepared by simple maceration. For phytochemical studies, isolation, purification, structure elucidation, metal analysis, total phenolic content, and solubility test were done by chromatographic and spectroscopic techniques. Anti-inflammatory activity was evaluated by cotton pallet edema model and carrageenan paw edema model, and antioxidant potential was evaluated by DPPH, FRAP, and ABTS antioxidants assays. Metal analysis of BD.Me revealed the presence of Na > Mg > K > Mn > Fe = Zn in respective order. Four phytochemicals such as gallic acid, quercetin, sinapic acid, and p-coumaric acid are found in Breynia distachia. Quercetin is present in relatively larger quantity, and shows antioxidant activity by reducing the ferric iron to ferrous iron. Novel distachionate shows high antioxidant activity in ABTS assay by reducing reactive oxygen species. Quantitative or qualitative analysis performed by HPLC indicates the ascending peaks or presence of secondary products (metabolites) respectively. Histopathology analysis of liver, spleen, heart, and kidney was done, revealing mild inflammations in spleen and liver, and no cytotoxicity in heart and kidney. Oral administration of BD.Me and ditachionate significantly inhibits the carrageenan and cotton pellet-induced paw edema in 1st and 2nd h with (ns = p > 0.05) than control. After 3rd, 4th, 5th, and 6th h, BD.Me and ditachionate showed inhibition of paw edema in a highly significant (*** = p < 0.001) manner as compared to control. In cotton-pellet edema model, distachionate shows a %inhibition of 57.3% at a dose level of 5 mg/kg. Docking values obtained from distachionate-COX-2 complex suggest a potent inhibitor evaluated for this protein. The distachionate shows effective anti-inflammatory activity. Methanol extracts of roots showed significant lipoxygenase inhibitory activity by IC50 values of 155.7 ± 0.55 and 132.9 ± 0.33 μg/mL. Data from various in vitro and in vivo models suggest that novel distachionate isolated from Breynia distachia shows strong antioxidant and anti-inflammatory activities; it should be further studied for the exploration of its medicinal potential.
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Meevassana J, Nacharoenkul P, Wititsuwannakul J, Kitkumthorn N, Hamill K, Angspatt A, Mutirangura A. B1 repetitive sequence methylation enhances wound healing of second‑degree burns in rats. Biomed Rep 2022; 16:20. [PMID: 35251607 PMCID: PMC8850962 DOI: 10.3892/br.2022.1503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 12/22/2021] [Indexed: 11/24/2022] Open
Abstract
The accumulation of DNA damage in burn wounds delays wound healing. DNA methylation by short interspersed nuclear element (SINE) small interfering (si)RNA prevents DNA damage and promotes cell proliferation. Therefore, SINE siRNA may be able to promote burn wound healing. Here, a SINE B1 siRNA was used to treat burn wounds in rats. Second-degree burn wounds were introduced on the backs of rats. The rats were then divided into three groups: a B1 siRNA-treated, saline-treated control, and saline + calcium phosphate-nanoparticle-treated control group (n=15/group). The wounds were imaged on days 0, 7, 14, 21 and 28 post-injury. The tissue sections were processed for methylation, histological and immunohistochemical examination, and scored based on the overall expression of histone H2AX phosphorylated on serine 139 (γH2AX) and 8-hydroxy-2'-deoxyguanosine (8-OHdG). Burn wound closure improved in the B1 siRNA-treated group compared with that in the control group, especially from days 14-28 post-injury (P<0.001). The overall pathological score and degree of B1 methylation in the B1 siRNA-treated group improved significantly at days 14-28 post-injury, with the maximum improvement observed on day 14 (P<0.01) compared with the NSS and Ca-P nanoparticle groups. Immunohistochemical staining revealed lower expression of γH2AX and 8-OHdG in the B1 siRNA-treated group than in the control groups at days 14-28 post-injury; the maximum improvement was observed on days 14 and 21. These data imply that administering SINE siRNA is a promising therapeutic option for managing second-degree burns.
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Affiliation(s)
- Jiraroch Meevassana
- Department of Anatomy, Center of Excellence in Molecular Genetics of Cancer and Human Disease, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Panupong Nacharoenkul
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Jade Wititsuwannakul
- Department of Medicine, Division of Dermatology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nakarin Kitkumthorn
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok 10400, Thailand
| | - Kevin Hamill
- Institute of Life Course and Medical Sciences, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 7ZX, United Kingdom
| | - Apichai Angspatt
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Apiwat Mutirangura
- Department of Anatomy, Center of Excellence in Molecular Genetics of Cancer and Human Disease, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
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Wharton’s Jelly Mesenchymal Stem Cells on a Novel Aloe Vera-Polycaprolactone (A-PCL) Composite Scaffold in Burns. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2022. [DOI: 10.1007/s40883-021-00241-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Sandora N, Fitria NA, Kusuma TR, Winarno GA, Tanjunga SF, Wardhana A. Amnion bilayer for dressing and graft replacement for delayed grafting of full-thickness burns; A study in a rat model. PLoS One 2022; 17:e0262007. [PMID: 35061768 PMCID: PMC8782387 DOI: 10.1371/journal.pone.0262007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 12/15/2021] [Indexed: 11/19/2022] Open
Abstract
Burn is a common case in developing countries, with over half of fire-related deaths reported in Southeast Asia and full-thickness burns as a high mortality risk. Human amnion has been used as a wound dressing for centuries. In this study, a decellularised amnion overlaid with fibrin, “amnion bilayer (AB),” was used as a dressing immediately after burn and as a graft to replace the scar in Sprague-Dawley rats subjected to full-thickness burn model. The aim was to observe whether amnion bilayer can reduce damages in third-grade burn when skin replacement is deemed impossible. The burn was induced using an electrical solder, heated for 5 mins, and contacted on the rat’s bare skin for 20 s. AB was applied as a (i) dressing immediately after induction and graft after eschar removal. Two groups (n = 6) were compared: AB and Sofra-Tulle ®, the National Hospital of Indonesia (NHI) protocol. Sections were stained with hematoxylin and eosin and Masson trichrome stains. Immunohistochemistry labelling was used to indicate scars (α-smooth muscle actin [α-SMA] and collagen-1) and angiogenesis (von Willebrand factor). Also, the macrophages inflammatory protein-3α (MIP-3α) indicates an early inflammatory process. The post dressing of the AB group demonstrated hair follicle remains and adipose tissue development. The NHI group appeared with a denatured matrix. Complete healing was seen in the AB group after 28 days with skin appendages similar to normal, while the NHI group showed no appendages in the centre of the actively inflamed area. The α-SMA was found in both groups. Collagen-1 was highly expressed in the NHI group, which led to a scar. Angiogenesis was found more in the AB group. The AB group had shown the capacity to accelerate complete healing and recover skin appendages better than the current protocol.
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Affiliation(s)
- Normalina Sandora
- Faculty of Medicine, Universitas Riau, Pekanbaru, Indonesia
- Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia
| | - Nur Amalina Fitria
- Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia
| | - Tyas Rahmah Kusuma
- Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia
| | - Gammaditya Adhibarata Winarno
- Burn Unit, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
- Department of Surgery, Plastic and Reconstructive Surgery Division, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
| | - Sanjaya Faisal Tanjunga
- Burn Unit, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
- Department of Surgery, Plastic and Reconstructive Surgery Division, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
| | - Aditya Wardhana
- Burn Unit, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
- Department of Surgery, Plastic and Reconstructive Surgery Division, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
- Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- * E-mail:
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23
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Morarasu S, Morarasu BC, Ghețu N, Dimofte MG, Iliescu R, Pieptu D. Experimental models for controlled burn injuries in rats: a systematic analysis of original methods and burn devices. J Burn Care Res 2021; 43:1055-1065. [PMID: 34888684 DOI: 10.1093/jbcr/irab234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
AIM Despite a wide variety of models found in literature, choosing the right one can be difficult as many of them are lacking precise methodology. This study aims to analyze and compare original burn models in terms of burn device and technique, parameters, and wound depth assessment. METHODS A systematic search was performed according to PRISMA guidelines on studies describing original experimental burn models in rats. The adapted PICO formula and ARRIVE checklist were followed for inclusion and assessment of quality of studies. Characteristics of animals, burn technique, burn parameters and method of histological confirmation of burn depth were recorded. RESULTS Twenty-seven studies were included in the final analysis. Most studies used direct contact with skin for burn infliction (n=20). The rat's dorsum was the most common site (n=18). Ten studies used manually controlled burn devices, while ten designed automatic burn devices with control over temperature (n=10), exposure time (n=5), and pressure (n=5). Most studies (n=7) used a single biopsy taken from the center of the wound to confirm burn depth immediately after burn infliction. CONCLUSION From the wide variety of burn models in current literature, our study provides an overview of the most relevant experimental burn models in rats aiding researchers to understand what needs to be addressed when designing their burn protocol. Models cannot be compared as burn parameters variate significantly. Assessment of burn depth should be done in a standardized, sequential fashion in future burn studies to increase reproducibility.
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Affiliation(s)
- Stefan Morarasu
- Center of Simulation and Training in Surgery (CSTC), Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania.,2nd Department of Surgical Oncology, Regional Oncology Institute, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Bianca-Codrina Morarasu
- Center of Simulation and Training in Surgery (CSTC), Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Nicolae Ghețu
- Center of Simulation and Training in Surgery (CSTC), Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania.,Department of Plastic and Reconstructive Surgery, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Mihail-Gabriel Dimofte
- 2nd Department of Surgical Oncology, Regional Oncology Institute, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Radu Iliescu
- Department of Pharmacology, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Dragos Pieptu
- Center of Simulation and Training in Surgery (CSTC), Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania.,Department of Plastic and Reconstructive Surgery, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
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TAKEJIMA ML, MAGALHÃES MAB, RIBAS JM, TABUSHI FI, BUFON CCB, CAMARGO TMS, MALUF IC, MALAFAIA O. VEGETABLE CELLULOSE NANOFIBER DRESSING AIDS IN THE HEALING PROCESS OF THIRD-DEGREE BURNS? STUDY ON RATS. ARQUIVOS BRASILEIROS DE CIRURGIA DIGESTIVA : ABCD = BRAZILIAN ARCHIVES OF DIGESTIVE SURGERY 2021; 34:e1586. [PMID: 34669881 PMCID: PMC8521782 DOI: 10.1590/0102-672020210002e1586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 03/01/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND The treatment of 3rd degree burns represents a major medical challenge. Pinus vegetable cellulose is a biomaterial with characteristic similar to bacterial cellulose. AIM To evaluate the safety of cellulose membrane (Pinus sp) in the treatment of 3rd burns in rats and to compare its effectiveness with the bacterial membrane already on the market. METHOD Thirty-three Wistar rats were beaten with a 3rd degree burn on back skin by applying water at 98º C for 30 s. Then, they were divided into three groups (n=11): group 1 - simple dressing with gauze; group 2 - dressing with bacterial cellulose membrane; and group 3 - dressing with vegetable cellulose membrane. The animals were maintained for 15 days to check the general clinical status, macroscopic aspect, contraction of the wounds and microscopic analysis for the degree of healing and collagenization. RESULTS They were clinically well during the experiment. During the removal of the dressing, there was bleeding in the wound of the control group, unlike the groups treated with cellulose membranes, which protected the bed from injury. The macroscopic evaluation showed a greater contraction of the wounds treated with the membranes in relation to the control. A microscopic analysis revealed that most of the wounds were in advanced healing degree with predominance of mature collagen in all groups. CONCLUSION Pinus sp cellulose membrane showed efficacy similar to that of the bacterial membrane in the treatment of 3rd degree burns.
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Affiliation(s)
- Milka Lie TAKEJIMA
- Mackenzie Evangelical Faculty of Paraná, Curitiba, PR, Brazil,University Evangelical Mackenzie Hospital, Curitiba, PR, Brazil
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25
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Qin P, Meng Y, Yang Y, Gou X, Liu N, Yin S, Hu Y, Sun H, Fu Z, Wang Y, Li X, Tang J, Wang Y, Deng Z, Yang X. Mesoporous polydopamine nanoparticles carrying peptide RL-QN15 show potential for skin wound therapy. J Nanobiotechnology 2021; 19:309. [PMID: 34627291 PMCID: PMC8501717 DOI: 10.1186/s12951-021-01051-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 09/20/2021] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Skin wound healing remains a considerable clinical challenge, thus stressing the urgent need for the development of new interventions to promote repair. Recent researches indicate that both peptides and nanoparticles may be potential therapies for the treatment of skin wounds. METHODS In the current study, the mesoporous polydopamine (MPDA) nanoparticles were prepared and the peptide RL-QN15 that was previously identified from amphibian skin secretions and exhibited significant potential as a novel prohealing agent was successfully loaded onto the MPDA nanoparticles, which was confirmed by results of analysis of scanning electron microscopy and fourier transform infrared spectroscopy. The encapsulation efficiency and sustained release rate of RL-QN15 from the nanocomposites were determined. The prohealing potency of nanocomposites were evaluated by full-thickness injured wounds in both mice and swine and burn wounds in mice. RESULTS Our results indicated that, compared with RL-QN15 alone, the prohealing potency of nanocomposites of MPDA and RL-QN15 in the full-thickness injured wounds and burn wounds in mice was increased by up to 50 times through the slow release of RL-QN15. Moreover, the load on the MPDA obviously increased the prohealing activities of RL-QN15 in full-thickness injured wounds in swine. In addition, the obvious increase in the prohealing potency of nanocomposites of MPDA and RL-QN15 was also proved by the results from histological analysis. CONCLUSIONS Based on our knowledge, this is the first research to report that the load of MPDA nanoparticles could significantly increase the prohealing potency of peptide and hence highlighted the promising potential of MPDA nanoparticles-carrying peptide RL-QN15 for skin wound therapy.
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Affiliation(s)
- Pan Qin
- Department of Biochemistry and Molecular Biology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Yi Meng
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Ying Yang
- Department of Endocrinology and Metabolism, Second People's Hospital of Yunnan Province and Affiliated Hospital of Yunnan University, Kunming, Yunnan, 650021, China
| | - Xinyu Gou
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119, China
| | - Naixin Liu
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Saige Yin
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Yan Hu
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Huiling Sun
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Zhe Fu
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Yinglei Wang
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Xiaojie Li
- Department of Biochemistry and Molecular Biology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Jing Tang
- Department of Biochemistry and Molecular Biology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Ying Wang
- Key Laboratory of Chemistry in Ethnic Medicine Resource, State Ethnic Affairs Commission and Ministry of Education, School of Ethno-Medicine and Ethno-Pharmacy, Yunnan Minzu University, Kunming, Yunnan, 650504, China.
| | - Ziwei Deng
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710119, China.
| | - Xinwang Yang
- Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, 650500, China.
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Sanjar F, Weaver AJ, Peacock TJ, Nguyen JQ, Brandenburg KS, Leung KP. Identification of Metagenomics Structure and Function Associated With Temporal Changes in Rat (Rattus norvegicus) Skin Microbiome During Health and Cutaneous Burn. J Burn Care Res 2021; 41:347-358. [PMID: 31665423 DOI: 10.1093/jbcr/irz165] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The cutaneous skin microbiome is host to a vast ensemble of resident microbes that provide essential capabilities including protection of skin barrier integrity and modulation of the host immune response. Cutaneous burn-injury promotes alteration of cutaneous and systemic immune response that can affect both commensal and pathogenic microbes. A cross-sectional study of a limited number of burn patients revealed a difference in the bacteriome of burned versus control participants. Temporal changes of the skin microbiome during health and cutaneous burn-injury remains largely unknown. Furthermore, how this microbial shift relates to community function in the collective metagenome remain elusive. Due to cost considerations and reduced healing time, rodents are frequently used in burn research, despite inherent physiological differences between rodents and human skin. Using a rat burn model, a longitudinal study was conducted to characterize the rat skin bacterial residents and associated community functions in states of health (n = 30) (sham-burned) and when compromised by burn-injury (n = 24). To address the knowledge gap, traumatic thermal injury and disruption of cutaneous surface is associated with genus-level changes in the microbiota, reduced bacterial richness, and altered representation of bacterial genes and associated predicted functions across different skin microbial communities. These findings demonstrate that, upon burn-injury, there is a shift in diversity of the skin's organismal assemblages, yielding a core microbiome that is distinct at the genome and functional level. Moreover, deviations from the core community correlate with temporal changes post-injury and community transition from the state of cutaneous health to disease (burn-injury).
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Affiliation(s)
- Fatemeh Sanjar
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, U.S. Army Institute of Surgical Research, JBSA Fort, Sam Houston, Texas
| | - Alan J Weaver
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, U.S. Army Institute of Surgical Research, JBSA Fort, Sam Houston, Texas
| | | | - Jesse Q Nguyen
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, U.S. Army Institute of Surgical Research, JBSA Fort, Sam Houston, Texas
| | - Kenneth S Brandenburg
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, U.S. Army Institute of Surgical Research, JBSA Fort, Sam Houston, Texas
| | - Kai P Leung
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, U.S. Army Institute of Surgical Research, JBSA Fort, Sam Houston, Texas
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Non-Thermal Atmospheric Pressure Argon-Sourced Plasma Flux Promotes Wound Healing of Burn Wounds and Burn Wounds with Infection in Mice through the Anti-Inflammatory Macrophages. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11125343] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Plasma medicine is the utilization of gas ionization that might be beneficial for the treatment of burn wounds, a healthcare problem with a significant mortality rate. Due to a lack of information on the impact of plasma flux in immune cells and a high prevalence of bacterial infection in burn wounds, non-thermal argon-based plasma flux was tested on macrophages (RAW246.7) and in mouse models of burn wounds with or without Staphylococcus aureus infection. Accordingly, plasma flux enhanced reactive oxygen species (ROS), using dihydroethidium assay, and decreased abundance of NF-κB-p65 (Western blot analysis) in non-stimulating macrophages. In parallel, plasma flux upregulated IL-10 gene expression (an anti-inflammatory cytokine) in lipopolysaccharide (LPS)-induced inflammatory macrophages, while downregulating the pro-inflammatory cytokines (IL-1β and IL-6). Additionally, plasma flux improved the migratory function of fibroblasts (L929) (fibroblast scratch assay) but not fibroblast proliferation. Moreover, once daily plasma flux administration for 7 days promoted the healing process in burn wounds with or without infection (wound area and wound rank score). Additionally, plasma flux reduced tissue cytokines (TNF-α and IL-6) in burn wounds with infection and promoted collagen in burn wounds without infection. In conclusion, plasma flux induced anti-inflammatory macrophages and promoted the burn-wound healing process partly through the decrease in macrophage NF-κB. Hence, plasma flux treatment should be tested in patients with burn wounds.
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Zakaria R, J Musa R, Faraj J, H Mahmoud Abudayeh Z, A Mohammed H. Evaluation of the Wheat Germ Oil Topical Formulations for Wound Healing Activity in Rats. Pak J Biol Sci 2021; 24:706-715. [PMID: 34486347 DOI: 10.3923/pjbs.2021.706.715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Wheat Germ Oil (WGO), the flour-milling by-product of wheat has essential constituents for skin health care as vitamin E, B-complex, squalene and unsaturated fatty acids. Incorporate WGO into polymers of the cream and ointment bases and evaluate the wound healing potential of these WGO formulations in the rat-animal model. <b>Materials and Methods:</b> WGO creams and ointments were prepared in two concentrations, 10 and 20% and evaluated for storage stability, homogeneity and compatibility using Fourier Transform Infrared (FT-IR) spectrometry. An amount of 0.5 g of the WGO formulations was applied daily to the injured area of the rats back. Wounds were observed for any clinical changes and healing compared to the control animal group. <b>Results:</b> The WGO was compatible with the cream and ointment bases and physically stables over 60 days of storage. The formulations of WGO have induced dose-dependent wound healing properties however the ointment formulations were demonstrating wound healing activity significantly better than the creams at all the intervals of the treatment. Within three weeks, 20% WGO ointment has induced a 90%reduction in the wound size diameter. Also, wounds recovered by 50% in 10 and 14 days of treatment with 20% WGO ointment and cream, respectively. <b>Conclusion:</b> The results revealed that WGO is a potential wound-healing agent from the scope that WGO is a common cosmetic ingredient and available at affordable prices.
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Aslam S, Khan I, Jameel F, Zaidi MB, Salim A. Umbilical cord-derived mesenchymal stem cells preconditioned with isorhamnetin: potential therapy for burn wounds. World J Stem Cells 2020; 12:1652-1666. [PMID: 33505606 PMCID: PMC7789118 DOI: 10.4252/wjsc.v12.i12.1652] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/01/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Impaired wound healing can be associated with different pathological states. Burn wounds are the most common and detrimental injuries and remain a major health issue worldwide. Mesenchymal stem cells (MSCs) possess the ability to regenerate tissues by secreting factors involved in promoting cell migration, proliferation and differentiation, while suppressing immune reactions. Preconditioning of MSCs with small molecules having cytoprotective properties can enhance the potential of these cells for their use in cell-based therapeutics.
AIM To enhance the therapeutic potential of MSCs by preconditioning them with isorhamnetin for second degree burn wounds in rats.
METHODS Human umbilical cord MSCs (hU-MSCs) were isolated and characterized by surface markers, CD105, vimentin and CD90. For preconditioning, hU-MSCs were treated with isorhamnetin after selection of the optimized concentration (5 µmol/L) by cytotoxicity analysis. The migration potential of these MSCs was analyzed by the in vitro scratch assay. The healing potential of normal, and preconditioned hU-MSCs was compared by transplanting these MSCs in a rat model of a second degree burn wound. Normal, and preconditioned MSCs (IH + MSCs) were transplanted after 72 h of burn injury and observed for 2 wk. Histological and gene expression analyses were performed on day 7 and 14 after cell transplantation to determine complete wound healing.
RESULTS The scratch assay analysis showed a significant reduction in the scratch area in the case of IH + MSCs compared to the normal untreated MSCs at 24 h, while complete closure of the scratch area was observed at 48 h. Histological analysis showed reduced inflammation, completely remodeled epidermis and dermis without scar formation and regeneration of hair follicles in the group that received IH + MSCs. Gene expression analysis was time dependent and more pronounced in the case of IH + MSCs. Interleukin (IL)-1β, IL-6 and Bcl-2 associated X genes showed significant downregulation, while transforming growth factor β, vascular endothelial growth factor, Bcl-2 and matrix metallopeptidase 9 showed significant upregulation compared to the burn wound, showing increased angiogenesis and reduced inflammation and apoptosis.
CONCLUSION Preconditioning of hU-MSCs with isorhamnetin decreases wound progression by reducing inflammation, and improving tissue architecture and wound healing. The study outcome is expected to lead to an improved cell-based therapeutic approach for burn wounds.
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Affiliation(s)
- Shazmeen Aslam
- Stem Cell Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 74700, Sindh, Pakistan
| | - Irfan Khan
- Stem Cell Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 74700, Sindh, Pakistan
| | - Fatima Jameel
- Stem Cell Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 74700, Sindh, Pakistan
| | - Midhat Batool Zaidi
- Stem Cell Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 74700, Sindh, Pakistan
| | - Asmat Salim
- Stem Cell Laboratory, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 74700, Sindh, Pakistan
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Nikahval B, Oryan A, Memarian P, Kamali A. Use of ovine acellular peritoneal matrix combined with honey and ovine fetal skin extract in the healing of full-thickness infected burn wounds in a rat model. VETERINARY RESEARCH FORUM : AN INTERNATIONAL QUARTERLY JOURNAL 2020; 11:355-363. [PMID: 33643588 PMCID: PMC7904127 DOI: 10.30466/vrf.2018.92422.2235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 10/20/2018] [Indexed: 11/23/2022]
Abstract
Treatment of infected burn wounds remains a challenge in burn units. Silver-sulfadiazine (SSD) is the most commonly used topical antimicrobial agent in managing these wounds. We aimed to accelerate the healing of burn wounds by combined application of ovine acellular peritoneal matrix (OAPM), honey (H), and ovine fetal skin extract (OFSE). Sixty-four standardized burn wounds were created on the dorsum of 16 rats and were subsequently inoculated with Staphyloccocus aureus and Pseudomonas aeruginosa. After 48 hr, the wounds were surgically debrided and received either physiologic saline (control group) or SSD, OAPM+SSD, OAPM+H+SSD, and OAPM+H+OFSE+SSD. The healing wounds were evaluated for size, bacterial counts, histopathology, and biomechanical properties on days 3, 7, 14, 21, and 28 after surgery. All treatments had effectively reduced the level of S. aureus and P. aeruginosa on wounds compared to the control group by day 3 and 7. The wounds treated with combined application of OAPM+H+OFSE+SSD demonstrated considerable inflammation reduction, fibroplasia, complete re-epithelialization, and wound contraction together with significantly lesser scar tissue formation. Treatment with OAPM+H+OFSE+SSD showed superior biomechanical properties of the healing wounds. The findings suggested that the synergistic effect of dressing the wounds with OAPM, H, and OFSE was a very effective approach in accelerating the healing process of the experimentally induced infected full-thickness burn wounds in rats.
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Affiliation(s)
- Behrooz Nikahval
- Department of Clinical Studies, School of Veterinary Medicine, Shiraz University, Shiraz, Iran;
| | - Ahmad Oryan
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
| | - Parastoo Memarian
- Department of Clinical Studies, School of Veterinary Medicine, Shiraz University, Shiraz, Iran;
| | - Amir Kamali
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
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EL Moussaoui A, Jawhari FZ, Bourhia M, Maliki I, Sounni F, Mothana RA, Bousta D, Bari A. Withania frutescens: Chemical characterization, analgesic, anti-inflammatory, and healing activities. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0088] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractWithania frutescens (W. frutescens) is a medicinal plant that is largely used in the Morrocan pharmacopeia for disease treatment. This work was conducted to investigate the chemical characterization, analgesic, anti-inflammatory, and healing activities of W. frutescens. The chemical characterization of W. frutescens extract was done using HPLC; the anti-inflammatory test was performed with doses 300, 400 and 450 mg/kg, and the healing activity was assessed using two creams (extract 5% and extract 10%). Phytochemical analysis revealed the presence of phenolic compounds. The results of the anti-inflammatory test were more pronounced when compared with the reference drug with a maximum inhibition percentage of 82.20% ± 8.69 obtained at the dose of 450 mg/kg. Local application of 10% plant cream induced 80.17% ± 7.89 of inflammation inhibition when compared with the indomethacin drug 92.33% ± 11.27. The studied plant extract showed a promising healing activity with the following percentage: 99.03% ± 0.76 (extract 10%), 98.61% ± 1.91 (extract 5%), and 57.43% ± 2.97 (control); meanwhile, the value reached to 100% ± 0.02 for the drug that was used as a reference within the first 2 weeks. The plant studied in this work would be a promising source for conceptualizing effective drugs against inflammatory diseases.
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Affiliation(s)
- Abdelfattah EL Moussaoui
- Laboratory of Biotechnology, Environment, Agrifood and Health, University of Sidi Mohamed Ben Abdellah, Faculty of Science, Fez, Morocco
| | - Fatima Zahra Jawhari
- Laboratory of Biotechnology, Environment, Agrifood and Health, University of Sidi Mohamed Ben Abdellah, Faculty of Science, Fez, Morocco
| | - Mohammed Bourhia
- Laboratory of Chemistry-Biochemistry, Environment, Nutrition, and Health, Faculty of Medicine and Pharmacy, Hassan II University, B.P. 5696, Casablanca, Morocco
| | - Imane Maliki
- Plant Protection Team, Laboratory of Environmental and Health, Faculty of Sciences, Moulay, Ismail University, Morocco
| | - Fatiha Sounni
- Laboratory of Biotechnology, Environment, Agrifood and Health, University of Sidi Mohamed Ben Abdellah, Faculty of Science, Fez, Morocco
| | - Ramzi A. Mothana
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Dalila Bousta
- Laboratory of Biotechnology, Environment, Agrifood and Health, University of Sidi Mohamed Ben Abdellah, Faculty of Science, Fez, Morocco
| | - Amina Bari
- Laboratory of Biotechnology, Environment, Agrifood and Health, University of Sidi Mohamed Ben Abdellah, Faculty of Science, Fez, Morocco
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Luze H, Kotzbeck P, Nischwitz SP, Kamolz LP. Importance of accurate and reproducible animal models for burn wounds. Burns 2020; 46:1479-1480. [PMID: 32546329 DOI: 10.1016/j.burns.2020.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 04/07/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Hanna Luze
- COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria; Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery Medical University of Graz, Graz, Austria.
| | - Petra Kotzbeck
- COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria; Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery Medical University of Graz, Graz, Austria
| | - Sebastian P Nischwitz
- COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria; Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery Medical University of Graz, Graz, Austria
| | - Lars-Peter Kamolz
- COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria; Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery Medical University of Graz, Graz, Austria
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Rais C, Slimani C, Benidir M, Elhanafi L, Zeouk I, Errachidi F, El Ghadraoui L, Louahlia S. Seeds of Zizyphus lotus: In Vivo Healing Properties of the Vegetable Oil. ScientificWorldJournal 2020; 2020:1724543. [PMID: 32565747 PMCID: PMC7298346 DOI: 10.1155/2020/1724543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 05/07/2020] [Indexed: 11/21/2022] Open
Abstract
The present study has been undertaken in order to highlight the healing effect of Zizyphus lotus vegetable oil. The seeds of this plant contain an oil rate of 30%. The obtained results on the main elements composing the vegetable oil have shown that Zizyphus lotus vegetable oil has a low value of acidity index and it presents a not negligible degree of unsaturation. The value of the peroxide index of Zizyphus lotus vegetable oil is less than 10 which characterizes the most of conventional oils. Furthermore, the spectral analysis by gas chromatography has shown the presence of 53 majority and minority molecules. Thus, the evaluation of the healing activity of Z. lotus seed vegetable oil has demonstrated a highly significant effect against the negative control and silver sulfadiazine was used as conventional treatment for burns. Based on the obtained results, we can suggest that the oil extracted from the seeds of the studied plant could be used to cure wounds.
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Affiliation(s)
- C. Rais
- Laboratory of Botany, National Agency of Medicinal and Aromatic Plants, P.O. Box 159, Taounate 34025, Morocco
- Laboratory of Functional Ecology and Environment, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d'Imouzzer, Fez, Morocco
| | - C. Slimani
- Laboratory of Functional Ecology and Environment, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d'Imouzzer, Fez, Morocco
| | - M. Benidir
- Laboratory of Functional Ecology and Environment, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d'Imouzzer, Fez, Morocco
| | - L. Elhanafi
- Laboratory of Functional Ecology and Environment, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d'Imouzzer, Fez, Morocco
- Laboratory of Engineering, Electrochemistry, Modeling and Environment, Faculty of Sciences Dhar Mahraz, Sidi Mohammed Ben Abdellah University, P.O. Box 1796, Fez-Atlas 30000, Morocco
| | - I. Zeouk
- Laboratory of Microbial Biotechnology, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d'Imouzzer, Fez, Morocco
| | - F. Errachidi
- Laboratory of Functional Ecology and Environment, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d'Imouzzer, Fez, Morocco
| | - L. El Ghadraoui
- Laboratory of Functional Ecology and Environment, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Route d'Imouzzer, Fez, Morocco
| | - S. Louahlia
- Laboratory of Natural Resources and Environment, Polydisciplinary Faculty of Taza, USMBA, Route d'Oujda, B.P. 1223, 1223 Taza, Morocco
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Wallace RG, Kenealy MR, Brady AJ, Twomey L, Duffy E, Degryse B, Caballero-Lima D, Moyna NM, Custaud MA, Meade-Murphy G, Morrin A, Murphy RP. Development of dynamic cell and organotypic skin models, for the investigation of a novel visco-elastic burns treatment using molecular and cellular approaches. Burns 2020; 46:1585-1602. [PMID: 32475797 DOI: 10.1016/j.burns.2020.04.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/27/2020] [Accepted: 04/28/2020] [Indexed: 01/26/2023]
Abstract
BACKGROUND Burn injuries are a major cause of morbidity and mortality worldwide. Despite advances in therapeutic strategies for the management of patients with severe burns, the sequelae are pathophysiologically profound, up to the systemic and metabolic levels. Management of patients with a severe burn injury is a long-term, complex process, with treatment dependent on the degree and location of the burn and total body surface area (TBSA) affected. In adverse conditions with limited resources, efficient triage, stabilisation, and rapid transfer to a specialised intensive care burn centre is necessary to provide optimal outcomes. This initial lag time and the form of primary treatment initiated, from injury to specialist care, is crucial for the burn patient. This study aims to investigate the efficacy of a novel visco-elastic burn dressing with a proprietary bio-stimulatory marine mineral complex (MXC) as a primary care treatment to initiate a healthy healing process prior to specialist care. METHODS A new versatile emergency burn dressing saturated in a >90% translucent water-based, sterile, oil-free gel and carrying a unique bio-stimulatory marine mineral complex (MXC) was developed. This dressing was tested using LabSkin as a burn model platform. LabSkin a novel cellular 3D-dermal organotypic full thickness human skin equivalent, incorporating fully-differentiated dermal and epidermal components that functionally models skin. Cell and molecular analysis was carried out by in vitro Real-Time Cellular Analysis (RTCA), thermal analysis, and focused transcriptomic array profiling for quantitative gene expression analysis, interrogating both wound healing and fibrosis/scarring molecular pathways. In vivo analysis was also performed to assess the bio-mechanical and physiological effects of this novel dressing on human skin. RESULTS This hybrid emergency burn dressing (EBD) with MXC was hypoallergenic, and improved the barrier function of skin resulting in increased hydration up to 24 h. It was demonstrated to effectively initiate cooling upon application, limiting the continuous burn effect and preventing local tissue from damage and necrosis. xCELLigence RTCA® on primary human dermal cells (keratinocyte, fibroblast and micro-vascular endothelial) demonstrated improved cellular function with respect to tensegrity, migration, proliferation and cell-cell contact (barrier formation) [1]. Quantitative gene profiling supported the physiological and cellular function finding. A beneficial quid pro quo regulation of genes involved in wound healing and fibrosis formation was observed at 24 and 48 h time points. CONCLUSION Utilisation of this EBD + MXC as a primary treatment is an effective and easily applicable treatment in cases of burn injury, proving both a cooling and hydrating environment for the wound. It regulates inflammation and promotes healing in preparation for specialised secondary burn wound management. Moreover, it promotes a healthy remodelling phenotype that may potentially mitigate scarring. Based on our findings, this EBD + MXC is ideal for use in all pre-hospital, pre-surgical and resource limited settings.
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Affiliation(s)
- Robert G Wallace
- Center for Preventive Medicine, School of Health & Human Performance, Dublin City University, Dublin 9, Ireland
| | - Mary-Rose Kenealy
- Center for Preventive Medicine, School of Health & Human Performance, Dublin City University, Dublin 9, Ireland
| | - Aidan J Brady
- Center for Preventive Medicine, School of Health & Human Performance, Dublin City University, Dublin 9, Ireland
| | - Laura Twomey
- Center for Preventive Medicine, School of Health & Human Performance, Dublin City University, Dublin 9, Ireland; Technological University Dublin, Ireland
| | - Emer Duffy
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Bernard Degryse
- Center for Preventive Medicine, School of Health & Human Performance, Dublin City University, Dublin 9, Ireland; Integrative Cell & Molecular Physiology Group, School of Health & Human Performance, Dublin City University, Dublin 9, Ireland
| | | | - Niall M Moyna
- Center for Preventive Medicine, School of Health & Human Performance, Dublin City University, Dublin 9, Ireland
| | | | | | - Aoife Morrin
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Ronan P Murphy
- Center for Preventive Medicine, School of Health & Human Performance, Dublin City University, Dublin 9, Ireland; Integrative Cell & Molecular Physiology Group, School of Health & Human Performance, Dublin City University, Dublin 9, Ireland.
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Luparello C, Mauro M, Lazzara V, Vazzana M. Collective Locomotion of Human Cells, Wound Healing and Their Control by Extracts and Isolated Compounds from Marine Invertebrates. Molecules 2020; 25:E2471. [PMID: 32466475 PMCID: PMC7321354 DOI: 10.3390/molecules25112471] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 02/06/2023] Open
Abstract
The collective migration of cells is a complex integrated process that represents a common theme joining morphogenesis, tissue regeneration, and tumor biology. It is known that a remarkable amount of secondary metabolites produced by aquatic invertebrates displays active pharmacological properties against a variety of diseases. The aim of this review is to pick up selected studies that report the extraction and identification of crude extracts or isolated compounds that exert a modulatory effect on collective cell locomotion and/or skin tissue reconstitution and recapitulate the molecular, biochemical, and/or physiological aspects, where available, which are associated to the substances under examination, grouping the producing species according to their taxonomic hierarchy. Taken all of the collected data into account, marine invertebrates emerge as a still poorly-exploited valuable resource of natural products that may significantly improve the process of skin regeneration and restrain tumor cell migration, as documented by in vitro and in vivo studies. Therefore, the identification of the most promising invertebrate-derived extracts/molecules for the utilization as new targets for biomedical translation merits further and more detailed investigations.
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Affiliation(s)
- Claudio Luparello
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy; (M.M.); (V.L.); (M.V.)
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Yaseen HS, Asif M, Saadullah M, Mahrukh, Asghar S, Shams MU, Bazmi RR, Saleem M, Yousaf HM, Yaseen M. Methanolic extract of Ephedra ciliata promotes wound healing and arrests inflammatory cascade in vivo through downregulation of TNF-α. Inflammopharmacology 2020; 28:1691-1704. [PMID: 32385747 DOI: 10.1007/s10787-020-00713-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 04/16/2020] [Indexed: 02/06/2023]
Abstract
Chronic wounds may lead to the development of various pathological conditions such as diabetic foot ulcers and pressure sores. The current study evaluated wound healing and anti-inflammatory potentials of methanolic extract of Ephedra ciliata using series of in vivo models. Methanolic extract of Ephedra ciliata was prepared by maceration (Ec.Me). Qualitative and quantitative (HPLC) phytochemical and metal analyses were conducted to explore the chemical and metal profiles of Ec.Me. Safety profile (behavioural) and, antimicrobial, antioxidant, wound healing, anti-inflammatory and anti-angiogenic potentials of Ec.Me were evaluated using well-established in vitro and in vivo models. ELISA assay was performed to estimate the effects of Ec.Me treatment on serum levels of TNF-α. HPLC analysis identified quercetin as one of the major compounds in Ec.Me. Safety study data showed that Ec.Me was safe up to the dose of 2000 mg/kg. Antimicrobial assay data showed that Ec.Me was active against bacterial (Staphylococcus aureus) as well as fungal (Candida albicans and Aspergillus niger) strains. Ec.Me showed modertate antioxidant potential in in vitro and in vivo models. Data of excision and burn wound healing models showed that Ec.Me, promoted wound closure in a dose and time-dependent manner. Treatment with 20% Ec.Me cream and heparin showed almost the same effects with no statistical differences (p > 0.05). Ec.Me also showed time-dependent anti-inflammatory activities in both acute and chronic models. In carrageenan model, treatment with 200 mg/kg of Ec.Me showed comparable anti-inflammatory effects (p > 0.05) with quercetin and indomethacin throughout the study. In cotton pellet granuloma model treatment with 200 mg/kg of Ec.Me and indomethacin inhibited granuloma formation significantly better (p < 0.05) as compared with the rest of the treatment groups. Histopathological examination of skin samples showed marked improvement in architecture with minimal infiltration of inflammatory cells. Data of in vivo angiogenesis assay showed marked improvement in vessels length, density, branching points, total segments and total nets after treatment with Ec.Me, indicating no toxic effects towards vasculature development. Significant (p < 0.05) downregulation of TNF-α was observed in serum samples of animals treated with Ec.Me. Based on data of the current study, it is concluded that quercetin-rich extract of Ephedra ciliata has wound healing and anti-inflammatory potentials via downregulation of TNF-α. Moreover, it is suggested that the antimicrobial activity of Ec.Me prevented microbial invasion, thus promoted natural wound healing mechanisms as well.
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Affiliation(s)
- Hafiza Sidra Yaseen
- Faculty of Pharmaceutical Sciences, Government College University of Faisalabad, Faisalabad, Pakistan
| | - Muhammad Asif
- Faculty of Pharmaceutical Sciences, Government College University of Faisalabad, Faisalabad, Pakistan. .,Department of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan.
| | - Malik Saadullah
- Faculty of Pharmaceutical Sciences, Government College University of Faisalabad, Faisalabad, Pakistan
| | - Mahrukh
- Faculty of Pharmaceutical Sciences, Government College University of Faisalabad, Faisalabad, Pakistan
| | - Sajid Asghar
- Faculty of Pharmaceutical Sciences, Government College University of Faisalabad, Faisalabad, Pakistan
| | | | - Rizwan Rashid Bazmi
- Faculty of Pharmaceutical Sciences, Government College University of Faisalabad, Faisalabad, Pakistan
| | - Mohammad Saleem
- Department of Pharmacology, Punjab University College of Pharmacy, University of the Punjab, Lahore, Pakistan
| | - Hafiz Muhammad Yousaf
- Faculty of Pharmaceutical Sciences, Government College University of Faisalabad, Faisalabad, Pakistan
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Ebrahimpour N, Mehrabani M, Iranpour M, Kordestani Z, Mehrabani M, Nematollahi MH, Asadipour A, Raeiszadeh M, Mehrbani M. The efficacy of a traditional medicine preparation on second-degree burn wounds in rats. JOURNAL OF ETHNOPHARMACOLOGY 2020; 252:112570. [PMID: 31945402 DOI: 10.1016/j.jep.2020.112570] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 12/08/2019] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lime Salve (L.S) has been well documented from the 9th to the 19th century AD by traditional Iranian medicine (TIM) as an effective remedy for burn healing. AIM OF THE STUDY The present study was undertaken to evaluate the healing effect and related underlying mechanisms of Lime Salve in a model of deep second-degree thermal burn in male Wistar rats. MATERIALS AND METHOD L.S was made up of a combination of refined calcium hydroxide powder, beeswax and sesame oil and its quality control was assessed. A deep second-degree burn was created by a hot plate in 48 male Wistar rats. Afterwards, they were randomly divided into four groups including normal saline (C group), L.S (T group), basement of formulation composed of beeswax and sesame oil (B group) and silver sulfadiazine (S group). On days 5, 10, 17 and 24, the wounds were digitally photographed by a camera and after sacrifice of the rats, skin samples were obtained for performing qRT-PCR, immunohistochemistry staining and histological examination. RESULTS L.S prominently augmented the wound closure rate, neovascularization on day 10 and collagen formation on days 17 and 24 in comparison with the C group. Furthermore, the Salve-exposed specimens showed a significant higher epithelialization during the experiment with a peak on day 24. qRT-PCR also showed that on day 10, VEGF and TGF-β1 genes were significantly higher in the T group as compared with the C group. Also, MMP-9 and MMP-2 genes had a significant peak of expression on day 17 and rapid reduction of expression on day 24. Expression levels of IL-6 and TNF-α genes peaked on day 10 in the T group, followed by a progressive reduction until the end of the examination. CONCLUSION L.S could effectively accelerate the healing process of deep second-degree burn wounds and therefore, it may be recommended as a promising topical medication for treating burn wounds in the future clinical trials.
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Affiliation(s)
- Nasser Ebrahimpour
- Physiology Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran; Department of Traditional Medicine, Faculty of Traditional Medicine, Kerman University of Medical Sciences, Kerman, Iran.
| | - Mehrnaz Mehrabani
- Cardiovascular Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran.
| | - Maryam Iranpour
- Pathology and Stem Cell Research Center, Kerman University of Medical Sciences, Kerman, Iran.
| | - Zeinab Kordestani
- Endocrinology and Metabolism Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman, Iran.
| | - Mitra Mehrabani
- Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran.
| | - Mohammad Hadi Nematollahi
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran.
| | - Ali Asadipour
- Pharmaceutical Sciences and Cosmetic Products Research Center, Kerman University of Medical Sciences, Kerman, Iran; Department of Medical Chemistry, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran.
| | - Mahboobeh Raeiszadeh
- Student Research Committee, Kerman University of Medical Sciences, Kerman, Iran; Department of Traditional Pharmacy, Faculty of Traditional Medicine, Kerman University of Medical Sciences, Kerman, Iran.
| | - Mehrzad Mehrbani
- Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran.
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Shukla SK, Sharma AK, Shaw P, Kalonia A, Yashavarddhan MH, Singh S. Creation of rapid and reproducible burn in animal model with a newly developed burn device. Burns 2020; 46:1142-1149. [PMID: 32169381 DOI: 10.1016/j.burns.2019.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/17/2019] [Accepted: 12/06/2019] [Indexed: 11/18/2022]
Abstract
BACKGROUND The currently available practices for creation of burns in the animals are mostly manual which may lead to lack of uniform wound. There is a need to develop a suitable device that could reproduce and uniformly create burn wound in animal models without the procedural variations and human variability. Present study deals with development of a burn device which has been designed for creation of animal models for burn injury. METHODS The designed burn device comprises of two main components a heating metal stylus and the thermal sensor. Metal stylus consists of two parts with top part acts as handle and bottom part contains the aluminum probe which quickly heats and cool. The temperature monitoring sensor is attached adjacent to the tip of the probe. The temperature and timer are digitally displayed and can be adjusted as per the requirement. This device is tested for creation of uniform burn in the mice model. Animals were divided into different groups and thermal burn was generated for 60 °C, 80 °C & 100 °C respectively. Burn wound was generated dorsally on shaved skin with contact time of 40 s. Skin biopsies of burn wound were collected after 24 h for histopathology analysis to determine the burn characteristics. Blood vessels damage in the skin was detected by transillumination and digital segmentation using VesSeg tool. RESULTS The device is able to deliver the different temperature to the animal skin. After reaching the 60 °C, 80 °C & 100 °C for 40 s respectively electronic relays shut down the device. The different groups of the animals showed significant difference in burn morphology in temperature dependent manner. Non significant variation in the burn area of different experimental groups animals was observed. All three zones vis-a-vis coagulation, stasis and hyperaemia were observed at 100 °C whereas found indistinct in 80 °C and 60 °C treated groups. Histopathological studies clearly demonstrated the differences in damage induction in stratum corneum, epidermis, dermis, collagen and hair follicle at selected thermal points. Severe blood vessels damage was observed only at 100 °C. The vascular perfusion was recorded 14% and 57% higher in 60 °C and 80 °C treated animals respectively when compared to control animals. However, at 100 °C due to highest vessel damage the perfusion was reduced to 53% compared to control. CONCLUSION Present study demonstrates that the device is able to generate precise and uniform burn wound in mice model. The device may be useful for burn related studies and validation of burn wound care products.
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Affiliation(s)
- Sandeep Kumar Shukla
- Institute of Nuclear Medicine & Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi 110054, India.
| | - Ajay Kumar Sharma
- Institute of Nuclear Medicine & Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi 110054, India
| | - Priyanka Shaw
- Institute of Nuclear Medicine & Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi 110054, India
| | - Aman Kalonia
- Institute of Nuclear Medicine & Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi 110054, India
| | - M H Yashavarddhan
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi 110054, India
| | - Sukhvir Singh
- Institute of Nuclear Medicine & Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi 110054, India
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Ramhormozi P, Mohajer Ansari J, Simorgh S, Nobakht M. Bone Marrow-Derived Mesenchymal Stem Cells Combined With Simvastatin Accelerates Burn Wound Healing by Activation of the Akt/mTOR Pathway. J Burn Care Res 2020; 41:1069-1078. [PMID: 32157277 DOI: 10.1093/jbcr/iraa005] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Burn wound healing is one of the most important problems in the field of medical science. Promising results have recently been reported by researchers who used bone marrow mesenchymal stem cells (BMSCs) to treat burn wounds. In this study, we investigated the effects of BMSC therapy in combination with simvastatin (SMV) on angiogenesis as well as on the activity of the Akt/mTOR signaling pathway during burn wound healing in rats. After creating second-degree burn wounds, 40 adult male Wistar rats were randomly divided into four treatment groups: the control, SMV, BMSCs, and the combination therapy group (BMSCs+SMV). Animals were killed 14 days after treatment initiation, and the wounds were removed for histological and molecular analyses. All in all, combination therapy produced better outcomes than individual therapy in terms of the wound closure area, epidermal regeneration level, collagen deposition intensity, and reepithelialization rate. In addition, the elevations of expression levels of Akt and mTOR genes, at both mRNA and protein levels, were more pronounced in the BMSCs+SMV group (P < .05, at least, for both qRT-PCR and western blot assessments). qRT-PCR findings also demonstrated that the wounds treated with the combination of BMSCs and SMV had the highest expression levels of CD31 and VEGF genes (P < .01 for all comparisons). These data suggest that the combined administration of BMSCs transplantation and topical SMV has a great potential in burn wound healing. According to the findings, the beneficial effects of the combination therapy are caused, at least in part, through stimulating Akt/mTOR signaling pathway.
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Affiliation(s)
- Parisa Ramhormozi
- Student Research Committee, Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.,Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Javad Mohajer Ansari
- Department of Anatomical Sciences, School of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Sara Simorgh
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Tehran, Iran
| | - Maliheh Nobakht
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.,$Antimicrobial Resistance Research Center, Immunology & Infectious Disease Research Institute, Iran University of Medical Sciences, Tehran, Iran
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Abd Elhaleem MB, Farghali AA, El-Shahawy AAG, Abo El-Ela FI, Eldine ZE, Mahmoud RK. Chemisorption and sustained release of cefotaxime between a layered double hydroxide and polyvinyl alcohol nanofibers for enhanced efficacy against second degree burn wound infection. RSC Adv 2020; 10:13196-13214. [PMID: 35492140 PMCID: PMC9051420 DOI: 10.1039/c9ra08355c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 02/19/2020] [Indexed: 12/31/2022] Open
Abstract
Zn–Al layered double hydroxides (LDHs) were synthesized by a chemical method, while polyvinyl alcohol (PVA) nanofibers were fabricated by an electrospinning approach; we also synthesized Zn–Al LDH/cefotaxime (cefotax), Zn–Al LDH@PVA, and Zn–Al LDH/cefotax@PVA (LCP). Characterizations were performed by X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, high-resolution transmission electron microscopy, energy dispersive X-ray spectroscopy, Brunauer–Emmett–Teller analysis, thermogravimetric-differential thermal analysis techniques, dynamic light scattering, X ray-florescence, and carbon, hydrogen, and nitrogen (CHN) analyses. The adsorption isotherm of cefotax and its entrapment percentage, release, and kinetics were also investigated. The results confirmed the elemental constituents of the mentioned formulas, which exhibited different degrees of crystallinity and different morphologies. Besides, these formulas were tested in vitro as antimicrobial agents and applied in vivo against second-degree wound burns induced in rats' skin. The adsorption of cefotax occurred chemically, and the experimental data were fitted with different isotherm models, where the Freundlich and Toth models gave the best fits. The entrapment percentage in LDH/cefotax was 77.41% and in LDH/cefotax@PVA, it was 67.83%. The sustained release of cefotax from LDH and LCP was attainable; the release percentages were 89.31% and 81.55% in up to 12 h, respectively. The release kinetics of cefotax from LDH fitted well with first-order kinetics, while that for LCP was parabolic. The formulas showed uneven antimicrobial effects against Gram-positive and Gram-negative bacteria; the best effect was exhibited by Zn–Al LDH/cefotax@PVA due to its sustained release. Finally, investigating the possibility of using these formulas in the clinical setting should be considered. This study succeeded to formulate, characterize, and investigate cefotax release and kinetics, and to compare cetofax with other known antibacterial agents.![]()
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Affiliation(s)
| | - Ahmed A. Farghali
- Materials Science and Nanotechnology Dept
- Faculty of Postgraduate Studies for Advanced Sciences (PSAS)
- Beni-Suef University
- Beni-Suef
- Egypt
| | - Ahmed. A. G. El-Shahawy
- Materials Science and Nanotechnology Dept
- Faculty of Postgraduate Studies for Advanced Sciences (PSAS)
- Beni-Suef University
- Beni-Suef
- Egypt
| | - Fatma I. Abo El-Ela
- Pharmacology Department
- Faculty of Veterinary Medicine
- Beni-Suef University
- 62511 Beni-Suef
- Egypt
| | - Zienab E. Eldine
- Materials Science and Nanotechnology Dept
- Faculty of Postgraduate Studies for Advanced Sciences (PSAS)
- Beni-Suef University
- Beni-Suef
- Egypt
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41
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Sanjar F, Weaver AJ, Peacock TJ, Nguyen JQ, Brandenburg KS, Leung KP. Temporal shifts in the mycobiome structure and network architecture associated with a rat (Rattus norvegicus) deep partial-thickness cutaneous burn. Med Mycol 2020; 58:107-117. [PMID: 31041451 PMCID: PMC6939685 DOI: 10.1093/mmy/myz030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/01/2019] [Accepted: 03/11/2019] [Indexed: 12/22/2022] Open
Abstract
With a diverse physiological interface to colonize, mammalian skin is the first line of defense against pathogen invasion and harbors a consortium of microbes integral in maintenance of epithelial barrier function and disease prevention. While the dynamic roles of skin bacterial residents are expansively studied, contributions of fungal constituents, the mycobiome, are largely overlooked. As a result, their influence during skin injury, such as disruption of skin integrity in burn injury and impairment of host immune defense system, is not clearly delineated. Burn patients experience a high risk of developing hard-to-treat fungal infections in comparison to other hospitalized patients. To discern the changes in the mycobiome profile and network assembly during cutaneous burn-injury, a rat scald burn model was used to survey the mycobiome in healthy (n = 30) (sham-burned) and burned (n = 24) skin over an 11-day period. The healthy skin demonstrated inter-animal heterogeneity over time, while the burned skin mycobiome transitioned toward a temporally stabile community with declining inter-animal variation starting at day 3 post-burn injury. Driven primarily by a significant increase in relative abundance of Candida, fungal species richness and abundance of the burned skin decreased, especially in days 7 and 11 post-burn. The network architecture of rat skin mycobiome displayed community reorganization toward increased network fragility and decreased stability compared to the healthy rat skin fungal network. This study provides the first account of the dynamic diversity observed in the rat skin mycobiome composition, structure, and network assembly associated with postcutaneous burn injury.
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Affiliation(s)
- Fatemeh Sanjar
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, US Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas, USA
| | - Alan J Weaver
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, US Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas, USA
| | - Trent J Peacock
- Office of Research Compliance, Mississippi State University, Mississippi, USA
| | - Jesse Q Nguyen
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, US Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas, USA
| | - Kenneth S Brandenburg
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, US Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas, USA
| | - Kai P Leung
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, US Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas, USA
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42
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Abazari M, Ghaffari A, Rashidzadeh H, Momeni Badeleh S, Maleki Y. Current status and future outlook of nano-based systems for burn wound management. J Biomed Mater Res B Appl Biomater 2019; 108:1934-1952. [PMID: 31886606 DOI: 10.1002/jbm.b.34535] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/03/2019] [Accepted: 11/16/2019] [Indexed: 01/07/2023]
Abstract
Wound healing process is a natural and intricate response of the body to its injuries and includes a well-orchestrated sequence of biochemical and cellular phenomena to restore the integrity of skin and injured tissues. Complex nature and associated complications of burn wounds lead to an incomplete and prolonged recovery of these types of wounds. Among different materials and systems which have been used in treating the wounds, nanotechnology driven therapeutic systems showed a great opportunity to improvement and enhancement of the healing process of different type of wounds. The aim of this study is to provide an overview of the recent studies about the various nanotechnology-based management of burn wounds and the future outlook of these systems in this area. Laboratory and animal models for assessing the efficacy of these systems in burn wound management also discussed.
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Affiliation(s)
- Morteza Abazari
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Azadeh Ghaffari
- Department of Food and Drug Control, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran.,Pharmaceutical Nanotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Hamid Rashidzadeh
- Department of pharmaceutical biomaterial, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Safa Momeni Badeleh
- Department of Food and Drug Control, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Yaser Maleki
- Department of Nanochemistry, Institute for Advanced Studies in Basic Sciences, Zanjan, Iran
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43
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Sharma S, Anwar MF, Dinda A, Singhal M, Malik A. In Vitro and in Vivo Studies of pH-Sensitive GHK-Cu-Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer. ACS OMEGA 2019; 4:20118-20128. [PMID: 31815212 PMCID: PMC6893953 DOI: 10.1021/acsomega.9b00655] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
The main aim of this study was to evaluate the in vitro and in vivo efficiency of the polyaspartic acid- and acrylic acid-based superabsorbent polymer. The synthesized polymer was first investigated to check the blood compatibility by protein adsorption and blood clotting tests. Further, the GHK-Cu peptide was incorporated within the polymer and release studies were performed to evaluate the drug-delivery efficiency of the superabsorbent polymer. The polymer with best peptide release results were further used for in vivo analysis for wound healing. The healing efficiency of polymer with and without peptide was analyzed using wound closure, biochemical assay, histopathological, and toxicity studies.
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Affiliation(s)
- Shilpa Sharma
- Department
of Chemistry, Dyal Singh College, University
of Delhi, New Delhi 110001, India
- Department of Pathology and Department of Plastic and Reconstructive Surgery, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Mohammad Faiyaz Anwar
- Department of Pathology and Department of Plastic and Reconstructive Surgery, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Amit Dinda
- Department of Pathology and Department of Plastic and Reconstructive Surgery, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Maneesh Singhal
- Department of Pathology and Department of Plastic and Reconstructive Surgery, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Amita Malik
- Department
of Chemistry, Dyal Singh College, University
of Delhi, New Delhi 110001, India
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44
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Babakhani A, Nobakht M, Pazoki Torodi H, Dahmardehei M, Hashemi P, Mohajer Ansari J, Ramhormozi P, Yari A, Heidari F. Effects of Hair Follicle Stem Cells on Partial-Thickness Burn Wound Healing and Tensile Strength. IRANIAN BIOMEDICAL JOURNAL 2019. [PMID: 31677605 PMCID: PMC6984715 DOI: 10.29252/ibj.24.2.99] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background: The recent improvements in wound healing have led to new strategies in regenerative medicine. Burn wound healing is an important issue in skin regeneration and has multiple indications for stem cell therapy. HFSCs are a highly promising source of stem cells for healing use, as these cells are accessible, active and pluripotent adult stem cells. Methods: HFSCs of the rat whisker were isolated, cultured, and labeled with DiI. Flow cytometry method was used to detect special markers of HFSCs. Deep partial-thickness burn wound was created, and labeled HFSCs were injected around the wound bed. Wound closure was recorded via digital photographs. The inflicted rats were sacrificed at 3, 7, or 14 days post burn and used for subsequent histological and tensiometry analysis. Results: Our results indicated that HFSCs were positive for Nestin and CD34 markers, but negative for Kr15. Morphological and histological photographs revealed that wound closure rate was accelerated in stem cell-treated group compared with other groups. In addition, faster re-epithelialization and collagen deposition were observed. The immunohistochemical analysis suggested that CD31 expression and vascular density enhanced in the stem cell-treated group. Further, tissue tensile strength increased in HFSCs-treated rats in comparison to the control group. Conclusion: The present study demonstrates that HFSCs could accelerate burn wound healing as well as tensile strength in rats.
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Affiliation(s)
- Azar Babakhani
- Department of Anatomy, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Malihe Nobakht
- Department of Anatomy, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hamidreza Pazoki Torodi
- Physiology Research Center, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Paria Hashemi
- Physiology Research Center, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Javad Mohajer Ansari
- Department of Anatomy, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Parisa Ramhormozi
- Department of Anatomy, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Abazar Yari
- Department of Anatomy, Faculty of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Fatemeh Heidari
- Department of Anatomy, Faculty of Medicine, Qom University of Medical Sciences, Qom, Iran
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45
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Alemzadeh E, Oryan A, Mohammadi AA. Hyaluronic acid hydrogel loaded by adipose stem cells enhances wound healing by modulating IL-1β, TGF-β1, and bFGF in burn wound model in rat. J Biomed Mater Res B Appl Biomater 2019; 108:555-567. [PMID: 31081996 DOI: 10.1002/jbm.b.34411] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 03/17/2019] [Accepted: 04/25/2019] [Indexed: 01/21/2023]
Abstract
Application of hydrogels can be an effective technique in transferring the adipose-derived stem cells (ASCs) to injured tissue and their protection from further complications. Besides, acellular dermal matrix (ADM) has successfully been used in treatment of wounds. In this study, a combination of hylauronic acid (HA) and ASCs (HA/ASCs) was applied on burn wounds and the injured area was then covered by an ADM dressing in a rat model (ADM-HA/ASCs). Wound healing was evaluated by histopathological, histomorphometrical, molecular, biochemical, and scanning electron microscopy assessments on days 7, 14, and 28 post-wounding. ADM-HA/ASCs stimulated healing significantly more than the ADM-HA and ADM treated wounds, as it led to reduced inflammation, and improved angiogenesis and enhanced granulation tissue formation. Expression of interleukin-1β (IL-1β) and transforming growth factor-β1 (TGF-β1) was lower in the ADM-HA/ASCs treated wounds than the ADM-HA and ADM groups, at the seventh post-wounding day. ADM-HA/ASCs also enhanced the expression level of TGF-β1 mRNA at 14 day post-wounding that was parallel to the experimental data from histological and biochemical assessments and confirmed the positive role of ASCs in repair of burn wounds. Additionally, increase in basic fibroblast growth factor (bFGF) expression and decreased TGF-β1 level on the 28th post-wounding day indicated the anti-scarring activity of ASCs. HA loaded by adipose stem cells can represent a promising strategy in accelerating burn wound healing.
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Affiliation(s)
- Esmat Alemzadeh
- Department of Biotechnology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Ahmad Oryan
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Ali A Mohammadi
- Burn and Wound Healing Research Center, Plastic and Reconstructive Ward, Shiraz University of Medical Sciences, Shiraz, Iran
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46
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Lukiswanto BS, Miranti A, Sudjarwo SA, Primarizky H, Yuniarti WM. Evaluation of wound healing potential of pomegranate ( Punica granatum) whole fruit extract on skin burn wound in rats ( Rattus norvegicus). J Adv Vet Anim Res 2019; 6:202-207. [PMID: 31453192 PMCID: PMC6702873 DOI: 10.5455/javar.2019.f333] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 02/03/2019] [Accepted: 02/16/2019] [Indexed: 01/04/2023] Open
Abstract
Objective: This research was conducted to study the wound healing process of whole fruit pomegranate extract (punica granatum) standardized with 40% ellagic acid ointment for deep second-degree burn wound of skin in the rat (Rattus norvegicus). Materials and Methods: Powder of standardized pomegranate extract (SPE) with 40% ellagic acid was processed to become ointments. Twenty-five male rats, weighed 150–180 gm at 3 months of age, were randomly divided into five groups. After anesthetized, stainless circle plate with 1 cm of diameter in 85°C was contacted firmly toward right gluteal of rat skins for 5 sec in order to create deep second-degree burn wound. Control groups consist of (T0) cream base and (T1) 1% silver sulfadiazine. Treatment groups consist of (T2) 2.5% SPE, (T3) 5% SPE, and (T4) 10% SPE. Histopathological preparation used hematoxylin-eosin stained skin samples. Histological observations were performed using the optics microscope against collagen, the number of polymorphonuclear cell (PMN) infiltration, the degree of angiogenesis, and re-epithelization. The results were statistically compared between groups. Results: Microscopic observation on the wound healing process on the collagen, PMN infiltration, angiogenesis, and re-epithelization showed that topical administration of 10% SPE in burns gives the best result. This is characterized by a high density of collagen with a good arrangement, which is accompanied by a complete and mature epithelium, low number of inflammatory cells, and angiogenesis. This may be caused by the compounds in the pomegranate extract, which have the antioxidant, anti-inflammatory, and anti-bacterial effects. Conclusion: This study reveals that 10% SPE accelerates the healing of deep second-degree burn wound. Thus, pomegranate standardized with 40% ellagic acid is a promising herb for the healing of burn wound of skin.
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Affiliation(s)
| | - Alya Miranti
- Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Sri Agus Sudjarwo
- Department of Pharmacology, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Hardany Primarizky
- Department of Clinical Science, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Wiwik Misaco Yuniarti
- Department of Clinical Science, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
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47
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O'Rourke BP, Kramer AH, Cao LL, Inayathullah M, Guzik H, Rajadas J, Nosanchuk JD, Sharp DJ. Fidgetin-Like 2 siRNA Enhances the Wound Healing Capability of a Surfactant Polymer Dressing. Adv Wound Care (New Rochelle) 2019; 8:91-100. [PMID: 30911440 PMCID: PMC6430983 DOI: 10.1089/wound.2018.0827] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 09/07/2018] [Indexed: 02/02/2023] Open
Abstract
Microtubules (MTs) are intracellular polymers that provide structure to the cell, serve as railways for intracellular transport, and regulate many cellular activities, including cell migration. The dynamicity and function of the MT cytoskeleton are determined in large part by its regulatory proteins, including the recently discovered MT severing enzyme Fidgetin-like 2 (FL2). Downregulation of FL2 expression with small interfering RNA (siRNA) results in a more than twofold increase in cell migration rate in vitro as well as translates into improved wound-healing outcomes in in vivo mouse models. Here we utilized a commercially available surfactant polymer dressing (SPD) as a vehicle to deliver FL2 siRNA. To this end we incorporated collagen microparticles containing FL2 siRNA into SPD (SPD-FL2-siRNA) for direct application to the injury site. Topical application of SPD-FL2 siRNA to murine models of full-thickness excision wounds and full-thickness burn wounds resulted in significant improvements in the rate and quality of wound healing, as measured clinically and histologically, compared with controls. Wound healing occurred more rapidly and with high fidelity, resulting in properly organized collagen substructure. Taken together, these findings indicate that the incorporation of FL2 siRNA into existing treatment options is a promising avenue to improve wound outcomes.
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Affiliation(s)
| | - Adam H. Kramer
- Physiology and Biophysics, and Albert Einstein College of Medicine, Bronx, New York
| | - Longyue L. Cao
- Department of Medicine, Children's Hospital Boston, Boston, Massachusetts
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Mohammed Inayathullah
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University, Palo Alto, California
| | - Hillary Guzik
- Analytical Imaging Facility, Albert Einstein College of Medicine, Bronx, New York
| | - Jayakumar Rajadas
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University, Palo Alto, California
| | - Joshua D. Nosanchuk
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York
| | - David J. Sharp
- MicroCures, Inc., Research and Development, Bronx, New York
- Physiology and Biophysics, and Albert Einstein College of Medicine, Bronx, New York
- Department of Ophthalmology and Visual Sciences, and Albert Einstein College of Medicine, Bronx, New York
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York
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48
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Sami DG, Heiba HH, Abdellatif A. Wound healing models: A systematic review of animal and non-animal models. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.wndm.2018.12.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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49
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Lateef Z, Stuart G, Jones N, Mercer A, Fleming S, Wise L. The Cutaneous Inflammatory Response to Thermal Burn Injury in a Murine Model. Int J Mol Sci 2019; 20:ijms20030538. [PMID: 30696002 PMCID: PMC6387172 DOI: 10.3390/ijms20030538] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 01/20/2019] [Accepted: 01/24/2019] [Indexed: 12/22/2022] Open
Abstract
Many burn interventions aim to target the inflammatory response as a means of enhancing healing or limiting hypertrophic scarring. Murine models of human burns have been developed, but the inflammatory response to injury in these models has not been well defined. The aim of this study was to profile inflammatory cell populations and gene expression relative to healing and scarring in a murine model of thermal burns. Cutaneous injuries were created on the dorsal region of C57Bl/6 mice using a heated metal rod. Animals were euthanized at selected time points over ten weeks, with the lesions evaluated using macroscopic measurements, histology, immunofluorescent histochemistry and quantitative PCR. The burn method generated a reproducible, partial-thickness injury that healed within two weeks through both contraction and re-epithelialization, in a manner similar to human burns. The injury caused an immediate increase in pro-inflammatory cytokine and chemokine expression, coinciding with an influx of neutrophils, and the disappearance of Langerhans cells and mast cells. This preceded an influx of dendritic cells and macrophages, a quarter of which displayed an inflammatory (M1) phenotype, with both populations peaking at closure. As with human burns, the residual scar increased in size, epidermal and dermal thickness, and mast cell numbers over 10 weeks, but abnormal collagen I-collagen III ratios, fibre organization and macrophage populations resolved 3–4 weeks after closure. Characterisation of the inflammatory response in this promising murine burn model will assist future studies of burn complications and aid in the preclinical testing of new anti-inflammatory and anti-scarring therapies.
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Affiliation(s)
- Zabeen Lateef
- Department of Pharmacology and Toxicology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand.
| | - Gabriella Stuart
- Department of Pharmacology and Toxicology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand.
| | - Nicola Jones
- Department of Pharmacology and Toxicology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand.
| | - Andrew Mercer
- Department of Microbiology and Immunology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand.
| | - Stephen Fleming
- Department of Microbiology and Immunology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand.
| | - Lyn Wise
- Department of Pharmacology and Toxicology, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand.
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50
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Collagen-Polyvinyl Alcohol-Indomethacin Biohybrid Matrices as Wound Dressings. Pharmaceutics 2018; 10:pharmaceutics10040224. [PMID: 30423969 PMCID: PMC6320800 DOI: 10.3390/pharmaceutics10040224] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/26/2018] [Accepted: 11/07/2018] [Indexed: 12/18/2022] Open
Abstract
The aim of this study is to design, develop and evaluate new biohybrid sponges based on polymers (collagen and polyvinyl alcohol) with and without indomethacin as anti-inflammatory drug model to be used for tissue regeneration in wound healing. Type I fibrillar collagen in the form of a gel and different concentrations of polyvinyl alcohol were mixed together to prepare composite gels. Both control samples, without indomethacin and with indomethacin, were obtained. All samples were crosslinked with glutaraldehyde. By freeze-drying of hydrogels, the spongious forms (matrices) were obtained. The matrices were characterized by FT-IR spectroscopy, scanning electron microscopy (SEM), water absorption, enzymatic degradation and in vitro indomethacin release. The pharmacological effect of the spongious biohybrid matrices was determined on an experimental model of burns induced to Wistar rats. The SEM images showed a porous structure with interconnected pores. Collagen sponges present a structure with pore sizes between 20 and 200 µm, which became more and more compact with polyvinyl alcohol addition. The FT-IR showed interactions between collagen and polyvinyl alcohol. The enzymatic degradation indicated that the most stable matrix is the one with the ratio 75:25 of collagen:polyvinyl alcohol (ACI75), the other ones being degradable in time. The kinetic data of indomethacin release from matrices were fitted with different kinetic models and highlighted a biphasic release of the drug. Such kinetic profiles are targeted in skin wound healing for which important aspects are impaired inflammation and local pain. The treatment with sponges associated with anti-inflammatory drug had beneficial effects on the healing process in experimentally induced burns compared to the corresponding matrices without indomethacin and the classical treated control group.
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