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Zhu H, Ao HT, Fu Y, Zou C, Chen Z, Jin Z, Zhou H, Sun B, Guo S. Optimizing alginate dressings with allantoin and chemical modifiers to promote wound healing. Int J Biol Macromol 2024; 275:133524. [PMID: 38945316 DOI: 10.1016/j.ijbiomac.2024.133524] [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: 03/04/2024] [Revised: 06/08/2024] [Accepted: 06/27/2024] [Indexed: 07/02/2024]
Abstract
Wound healing requires diverse functionalities in dressings, and conventional materials often fall short in water absorption and moisture regulation. Natural sodium alginate is popular in wound dressings due to its excellent film-forming ability, biocompatibility, ionic crosslinking, and pH responsiveness. However, it has limitations in physical stability and solubility in aqueous environments. This study enhanced alginate dressings by incorporating allantoin and treating with calcium chloride and citric acid to improve physicochemical properties and mechanical performance. Treatments for S2 to S5 prevented dissociation and maintained integrity, with suitable water absorption (363 %-442 %) and water vapor transmission rates (612.53-715.39 g × m2 × day-1). The treatments also improved tensile strength (44.90-55.19 MPa). S2 had the highest migration ratio (52.71 %) of L929 cells and wound healing rates for mice skin (86.6 %), indicating that calcium chloride treatment is beneficial. All dressings (S1 to S5) exhibited low cytotoxicity against L929 cells and low hemolysis ratios, indicating good biocompatibility. Higher allantoin content improved wound healing efficacy. This study provides valuable insights for the design and development of alginate dressings in wound repair, expanding allantoin's application in wound healing.
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Affiliation(s)
- Haichao Zhu
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hoi Tong Ao
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuli Fu
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Chenming Zou
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ziyan Chen
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China; SJTU Yazhou Bay Institute of Deepsea Science and Technology, Shanghai Jiao Tong University, Sanya 572024, Hainan, China
| | - Zhu Jin
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Huawei Zhou
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bixi Sun
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China; SJTU Yazhou Bay Institute of Deepsea Science and Technology, Shanghai Jiao Tong University, Sanya 572024, Hainan, China.
| | - Shengrong Guo
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China.
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Bernardes MJC, Gonçalves RC, Carvalho CDS, Rosa LM, Ferreira AP, Vilela MS, Vinaud MC, Galdino Junior H, Lino Junior RDS. Hydrogel-based dressings in the treatment of partial thickness experimentally induced burn wounds in rats. Acta Cir Bras 2022; 37:e370401. [PMID: 35792743 PMCID: PMC9290765 DOI: 10.1590/acb370401] [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: 12/08/2021] [Accepted: 03/11/2022] [Indexed: 11/22/2022] Open
Abstract
Purpose: To compare four commercially available hydrogel formulations in the healing
of partial thickness burns experimentally induced in rats. Methods: Wistar rats were used, and after the burn wound induction they were divided
into the following treatment groups: G1) NaCl 0.9%; G2) 1% silver
sulfadiazine; G3) Debrigel™; G4) Safgel™; G5) Dersani™; G6) Solosite™. The
animals were followed during seven, 14 and 30 days after the injury
induction. Morphometric, macroscopic and microscopic evaluations were
performed. Results: The treatment with Dersani™ induced better results during the inflammatory
and proliferative phases of the healing process (p<0.05). The animals
treated with Safgel™ presented better scaring in the remodeling phase
(p<0.05), and the treatment with Dersani™ and Solosite™ induced greater
wound closure (p<0.05). Conclusions: The hydrogel-based dressings presented beneficial outcomes in the healing of
burn wounds experimentally induced in rats due to their ability in maintain
the humidity of the wound, in removing the exudate, in promoting cell
migration and collagen production during the different phases of the healing
process.
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Affiliation(s)
- Milton Junior Cândido Bernardes
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Postgraduation Program in HostParasite Relationship - Goiânia (GO), Brazil
| | - Randys Caldeira Gonçalves
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Postgraduation Program in HostParasite Relationship - Goiânia (GO), Brazil
| | - Carolyna de Sousa Carvalho
- MSc. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Postgraduation Program in HostParasite Relationship - Goiânia (GO), Brazil
| | | | | | | | - Marina Clare Vinaud
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Biosciences Department - Goiânia (GO), Brazil
| | | | - Ruy de Souza Lino Junior
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Biosciences Department - Goiânia (GO), Brazil
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Xie H, Bai Q, Kong F, Li Y, Zha X, Zhang L, Zhao Y, Gao S, Li P, Jiang Q. Allantoin-functionalized silk fibroin/sodium alginate transparent scaffold for cutaneous wound healing. Int J Biol Macromol 2022; 207:859-872. [PMID: 35358577 DOI: 10.1016/j.ijbiomac.2022.03.147] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 12/26/2022]
Abstract
In clinical application, it's highly desirable for developing bio-functionalized cutaneous scaffold with transparent features for convenient observation, excellent biocompatibility, and high efficiency for promoting wound repair. Herein, allantoin-functionalized composite hydrogel was developed by coupling silk fibroin (SF) and sodium alginate (SA) for treatment of cutaneous wounds. The prepared allantoin-functionalized SF-SA composite scaffolds (AFAS) exhibited excellent mechanical properties, especially featured by similar ultimate tensile strength (UTS) and elongation at breaking to human skin. Besides, the solvent-casting method guaranteed the AFAS to obtain highly transparent properties with sufficient moisture permeability and excellent adhesion in wet state. In vitro cellular experiments demonstrated excellent biocompatibility of the scaffold that attachment and proliferation of NIH-3T3 fibroblast cells was promoted in the presence of AFAS. Furthermore, the scaffolds exhibited efficient hemostatic property, based on rat hepatic hemorrhage model. In a cutaneous excisional mouse wound model, the AFAS significantly improved the wound closure rate, compared with pure SF-SA scaffolds and blank control. Moreover, the histomorphological assessments showed that AFAS facilitated the integrity of skin and wound healing process by enhancing collagen deposition, re-epithelialization and vascularization at wound site. The results demonstrate that the novel allantoin-functionalized SF/SA transparent hydrogel has great potential for clinical treatment of cutaneous wound.
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Affiliation(s)
- Haojiang Xie
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Qiao Bai
- Department of Pathology, Southwest Hospital, Chongqing 400038, China
| | - Fankai Kong
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Yang Li
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Xiaoying Zha
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Lingqin Zhang
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Yiming Zhao
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Shasha Gao
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Ping Li
- Medical Information College, Chongqing Medical University, Chongqing 400016, China
| | - Qifeng Jiang
- Medical Information College, Chongqing Medical University, Chongqing 400016, China.
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Zha X, Xiong X, Chen C, Li Y, Zhang L, Xie H, Jiang Q. Usnic-Acid-Functionalized Silk Fibroin Composite Scaffolds for Cutaneous Wounds Healing. Macromol Biosci 2020; 21:e2000361. [PMID: 33369081 DOI: 10.1002/mabi.202000361] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/01/2020] [Indexed: 12/17/2022]
Abstract
Despite the progress in chronic wound treatment, antibacterial cutaneous scaffold with high efficiency in wound healing is still the hot spot in the field. In present study, a functionalized silk fibroin (SF) cutaneous scaffold incorporated with natural medicine usnic acid (UA) is investigated, in which UA is used as an antibacterial and wound-healing reagent. Via electrospinning, UA-SF mixture is fabricated into UA-SF composite scaffold (USCS), which is composed of uniform nanofibers with average diameters of around 360 ± 10 nm. The interwoven nanofibers form mesh structure providing sufficient moisture permeability for scaffold. With methanol treatment, USCS presents improved mechanical properties and stability to protease XIV. In the presence of USCS, the growth rate of both Gram-positive and Gram-negative bacteria, including Staphylococcus aureus, Streptococci pyogenes, Escherichia coli, and Pseudomonas aeruginosa, is significantly inhibited in plate culture and suspension assays. In a cutaneous excisional mouse wound model, USCS presents a significant increase of wound closure rate, compared with pure SF scaffold and commercial dressing, Tegaderm Hydrocolloid 3M . The histological assessments further prove that USCS can enhance re-epithelialization, vascularization, and collagen deposition in wound site to promote the wound-healing process, which indicates the potential application of USCS in chronic wound treatment.
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Affiliation(s)
- Xiaoying Zha
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Xingliang Xiong
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Cheng Chen
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Yang Li
- Department of Medical Equipment, Yubei District People's Hospital, Chongqing, 401120, China
| | - Lingqin Zhang
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Haojiang Xie
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
| | - Qifeng Jiang
- Medical Information College, Chongqing Medical University, Chongqing, 400016, China
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