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Tan J, Li J, Zhou X. The crystallization properties of antifreeze GelMA hydrogel and its application in cryopreservation of tissue-engineered skin constructs. J Biomed Mater Res B Appl Biomater 2024; 112:e35408. [PMID: 38676958 DOI: 10.1002/jbm.b.35408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/16/2024] [Accepted: 04/03/2024] [Indexed: 04/29/2024]
Abstract
Gelatin methacrylate (GelMA) hydrogels are expected to be ideal skin tissue engineering dressings for a wide range of clinical treatments. Herein, we report the preparation of GelMA or antifreeze GelMA hydrogel sheets with different GelMA concentrations, crosslinking times, and cryoprotectant (CPA) concentrations. The crystallization properties of GelMA or antifreeze GelMA hydrogel sheets were studied by cryomicroscopy and differential scanning calorimetry (DSC). It was found that the growth of ice crystals was slower when GelMA hydrogel concentration was more than 7%. The 10% DMSO-7% GelMA hydrogel sheets crosslinked for 60 min showed no ice crystal formation and growth during cooling and warming. The DSC results showed that the vitrification temperature of the 10% DMSO-7% GelMA hydrogel sheet was -111°C. Furthermore, slow freezing and rapid freezing of fibroblast-laden GelMA or antifreeze GelMA hydrogel sheets, and tissue-engineered skin constructs were studied. The results showed no significant difference in cell survival between slow (88.8% ± 1.51) and rapid (89.2% ± 3.00) freezing of fibroblast-loaded 10% DMSO-7% GelMA hydrogel sheets, and significantly higher than that of 7% GelMA hydrogel sheets (33.4% ± 5.46). The cell viability was higher in tissue-engineered skin constructs after slow freezing (86.34% ± 1.45) than rapid freezing (72.74% ± 1.34). We believe that the combination of antifreeze hydrogels and tissue engineering will facilitate the cryopreservation of tissue engineering constructs.
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Affiliation(s)
- Jia Tan
- Institute of Biothermal Science & Technology, University of Shanghai for Science and Technology, Shanghai, China
- Shanghai Co-innovation Center for Energy Therapy of Tumors, Shanghai, China
- Shanghai Technical Service Platform for Cryopreservation of Biological Resources, Shanghai, China
| | - Jiahui Li
- Institute of Biothermal Science & Technology, University of Shanghai for Science and Technology, Shanghai, China
- Shanghai Co-innovation Center for Energy Therapy of Tumors, Shanghai, China
- Shanghai Technical Service Platform for Cryopreservation of Biological Resources, Shanghai, China
| | - Xinli Zhou
- Institute of Biothermal Science & Technology, University of Shanghai for Science and Technology, Shanghai, China
- Shanghai Co-innovation Center for Energy Therapy of Tumors, Shanghai, China
- Shanghai Technical Service Platform for Cryopreservation of Biological Resources, Shanghai, China
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Heidari M, Gheshlaghi AN, Masoudi R, Raeisi H, Sobouti B. Effects of a Spiritual Care Program on Body Image and Resilience in Patients with Second-Degree Burns in Iran. JOURNAL OF RELIGION AND HEALTH 2024; 63:329-343. [PMID: 36593324 DOI: 10.1007/s10943-022-01732-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
This research was conducted with the aim of investigating the effect of a spiritual care program (SCP), on the body image and resilience of second-degree burn patients in Iran. In this semi-experimental study, 60 patients with second-degree burns were selected in the Tehran Mottahari Burns Hospital, Iran in 2022. These patients were divided through random allocation into two intervention and control groups. The patients of both groups filled out Beck's self-esteem Test (BSCT) and Connor-Davidson Resilience Scale (CD-RISC) before, immediately, and 3 months after the intervention. In the intervention group, SCP was performed for eight sessions over two weeks. Firstly, the 4D Model of Spiritual Health and Well-Being was examined, then two one-hour sessions were held with each patient about each dimension, with a total of four dimensions including eight sessions, in which these dimensions were examined and discussed. There was no difference in the score of body image (P = 0.326) and resilience (P = 0.597) before intervention in the control and intervention groups. However, the mean of body image score in the intervention group immediately (109.56 ± 4.86) and 3 months after (109.16 ± 6.06) the intervention was significant, respectively. Also, the mean of resilience score in the intervention group was significant immediately (85.86 ± 6.78) and 3 months after the intervention (85.73 ± 6.27). It is suggested for healthcare providers to use the SCPs to reduce the recovery time of burned patients and reduce complications and treatment costs.
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Affiliation(s)
- Mohammad Heidari
- Community-Oriented Nursing Midwifery Research Center, Nursing and Midwifery School, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Ali Najafi Gheshlaghi
- School of Nursing and Midwifery, Shahrekord University of Medical Sciences, Shahrekord, Iran.
| | - Reza Masoudi
- Department of Adults and Geriatric Nursing, School of Nursing and Midwifery, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Hadi Raeisi
- Department of Epidemiology and Biostatistics, School of Health, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Behnam Sobouti
- Department of Pediatrics, School of Medicine, Shahid Motahari Burns Hospital, Iran University of Medical Sciences, Tehran, Iran
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Chen L, Ye J, Gao C, Deng F, Liu W, Zhang Q. Design and fabrication of gelatin-based hydrogel loaded with modified amniotic extracellular matrix for enhanced wound healing. Heliyon 2023; 9:e20521. [PMID: 37790967 PMCID: PMC10543223 DOI: 10.1016/j.heliyon.2023.e20521] [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: 06/18/2023] [Revised: 09/21/2023] [Accepted: 09/27/2023] [Indexed: 10/05/2023] Open
Abstract
Trauma can damage the structural integrity of skin leading to its function being affected. There is an urgent clinical need for innovative therapeutic wound dressings. However, several challenges persist despite the current demands. The development and application of functional dressings offer a novel approach to address skin and subcutaneous soft tissue defects. Amniotic membrane as an ideal biological multifunctional material covering wound surface has been reported in clinic. However, current clinical applications of amniotic membrane still have limitations, such as thinness and mechanically weak. In this paper, we employed decellularized human amniotic membrane (dHAM) as a bioactive extracellular matrix (ECM) and modified it through methacrylate (MA) grafting for engineering purposes, resulting in the photosensitive dECMMA. Subsequently, we utilized a photosensitizer to achieve photopolymerization of dECMMA with GelMA hydrogel, successfully creating a novel composite hydrogel termed dECMMA/GelMA. This composite hydrogel not only inherits the favorable physicochemical properties of hydrogels but also maintains comparable levels of bioactivity to dHAM itself, supporting cell proliferation, migration, angiogenesis, and retaining significant anti-inflammatory capacity. Additionally, we evaluated the reparative effect of the designed dECMMA/GelMA composite hydrogel on rabbit wound defects. We demonstrated that the dECMMA/GelMA promoted wound healing and re-epithelization. These findings highlight the substantial benefits and therapeutic potential of the dECMMA/GelMA composite hydrogel as a practical solution for clinical applications in the treatment of soft tissue damage. Furthermore, this research provides a new strategy for designing and manufacturing bioactive dressings with exceptional clinical efficacy in the future.
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Affiliation(s)
- Lifa Chen
- The Department of Burn & Plastic Surgery, The Affiliated Hospital of Yangzhou University, Yangzhou University, 368 Hanjiang Middle Road, Yangzhou, Jiangsu, 225009, PR China
| | - JueLan Ye
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, PR China
| | - Chong Gao
- The Department of Burn & Plastic Surgery, The Affiliated Hospital of Yangzhou University, Yangzhou University, 368 Hanjiang Middle Road, Yangzhou, Jiangsu, 225009, PR China
| | - Fei Deng
- The Department of Burn & Plastic Surgery, The Affiliated Hospital of Yangzhou University, Yangzhou University, 368 Hanjiang Middle Road, Yangzhou, Jiangsu, 225009, PR China
| | - Wei Liu
- The Affiliated Suqian First People's Hospital of Nanjing Medical University, 120 Suzhi Road, Suqian, Jiangsu, 223812, PR China
| | - Qiang Zhang
- The Department of Burn & Plastic Surgery, The Affiliated Hospital of Yangzhou University, Yangzhou University, 368 Hanjiang Middle Road, Yangzhou, Jiangsu, 225009, PR China
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Chanmontri M, Swilem AE, Mutch AL, Grøndahl L, Suwantong O. Physicochemical and in vitro biological evaluation of an injectable self-healing quaternized chitosan/oxidized pectin hydrogel for potential use as a wound dressing material. Int J Biol Macromol 2023; 242:124984. [PMID: 37244331 DOI: 10.1016/j.ijbiomac.2023.124984] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 05/29/2023]
Abstract
Injectable self-healing hydrogels are attractive materials for use as wound dressings. To prepare such hydrogels, the current study used quaternized chitosan (QCS) to improve the solubility and antibacterial activity and oxidized pectin (OPEC) to introduce aldehyde groups for Schiff's base reaction with the amine groups from QCS. Self-healing hydrogels were made by co-injection of polymer solutions at specific polymer concentrations and reagent ratios that optimized both Schiff's base reactions and ionic interactions. The optimal hydrogel displayed self-healing 30 min after cutting and continuous self-healing during continuous step strain analysis, rapid gelation (< 1 min), a storage modulus of 394 Pa, and hardness of 700 mN, and compressibility of 162 mN s. The adhesiveness of this hydrogel (133 Pa) was within a suitable range for application as a wound dressing. The extraction media from the hydrogel displayed no cytotoxicity to NCTC clone 929 cells and higher cell migration than the control. While the extraction media from the hydrogel was found not to have antibacterial properties, QCS was verified as having MIC50 of 0.04 mg/mL against both E. coli and S. aureus. Therefore, this injectable self-healing QCS/OPEC hydrogel has the potential use as a biocompatible hydrogel material for wound management.
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Affiliation(s)
- Mueanchan Chanmontri
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; School of Chemistry and Molecular Biosciences, University of Queensland, Queensland 4072, Australia
| | - Ahmed E Swilem
- School of Chemistry and Molecular Biosciences, University of Queensland, Queensland 4072, Australia; Chemistry Department, Faculty of Science, Ain Shams University, Abbassia, Cairo 11566, Egypt
| | - Alexandra L Mutch
- School of Chemistry and Molecular Biosciences, University of Queensland, Queensland 4072, Australia
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences, University of Queensland, Queensland 4072, Australia
| | - Orawan Suwantong
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; Center of Chemical Innovation for Sustainability, Mae Fah Luang University, Chiang Rai 57100, Thailand.
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Huang B, An L, Su W, Yan T, Zhang H, Yu DJ. Exploring the alterations and function of skin microbiome mediated by ionizing radiation injury. Front Cell Infect Microbiol 2022; 12:1029592. [DOI: 10.3389/fcimb.2022.1029592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/19/2022] [Indexed: 11/15/2022] Open
Abstract
BackgroundRadiation-induced skin injury (RISI) is still the most common and severe side effect of radiotherapy. The role of the skin’s microbial barrier in the pathogenesis and progression of RISI needs to be fully investigated.MethodsThis study aimed to explore the alterations in and functions of the skin microbiota in RISI. We applied the unculturable approach to characterize the cutaneous microbiomes of a radiation-induced animal model by sequencing the V1–V3 regions of the 16S ribosomal RNA (rRNA) gene. Combined with the downloaded clinical data of patients, a comprehensive analysis was performed to identify potential radioprotective species and metabolic pathways.ResultsThere were no significant differences in the alpha diversity indices (Sobs, Shannon, Simpson, Ace, and Chao) between the acute radiation injury and control groups. Phylum-level analysis of the RISI microbiomes exhibited significant predominance of Firmicutes (mean abundance = 67%, corrected p = 0.0035). The high abundance of Firmicutes was significantly associated with rapid healing of RISI (average relative abundance = 52%; Kruskal–Wallis: p = 5.7E−4). Among its members, Streptococcus, Staphylococcus, Acetivibrio ethanolgignens group, Peptostreptococcus, Anaerofilum, and UCG-002 [linear discriminant analysis (LDA) > 3, p < 0.05] were identified as the core genera of Firmicutes. In addition, Lachnosiraceae and Lactobacillus occupied an important position in the interaction network (r > 0.6, p < 0.05). The differential metabolic pathways of RISI were mainly associated with carbohydrate metabolism (butanoate and propanoate metabolism), amino acid metabolism (tryptophan and histidine metabolism), energy metabolism, and lipid metabolism (fatty acid degradation and biosynthesis).ConclusionThis study provides new insights into the potential mechanism and skin microbial changes in the progression of RISI. The overwhelming predominance of members of Firmicutes, including Streptococcaceae, Staphylococcaceae, Lachnospiraceae, and Lactobacillus, is potentially related to rapid healing of RISI. The microbiota–metabolite axis plays a critical role in RISI and provides promising therapeutic targets for the treatment of adverse side effects.
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Zhai H, Jin X, Minnick G, Rosenbohm J, Hafiz MAH, Yang R, Meng F. Spatially Guided Construction of Multilayered Epidermal Models Recapturing Structural Hierarchy and Cell-Cell Junctions. SMALL SCIENCE 2022; 2:2200051. [PMID: 36590765 PMCID: PMC9799093 DOI: 10.1002/smsc.202200051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A current challenge in three-dimensional (3D) bioprinting of skin equivalents is to recreate the distinct basal and suprabasal layers and to promote their direct interactions. Such a structural arrangement is essential to establish 3D stratified epidermis disease models, such as for the autoimmune skin disease pemphigus vulgaris (PV), which targets the cell-cell junctions at the interface of the basal and suprabasal layers. Inspired by epithelial regeneration in wound healing, we develop a method that combines 3D bioprinting and spatially guided self-reorganization of keratinocytes to recapture the fine structural hierarchy that lies in the deep layers of the epidermis. Here, keratinocyte-laden fibrin hydrogels are bioprinted to create geographical cues, guiding dynamic self-reorganization of cells through collective migration, keratinocyte differentiation and vertical expansion. This process results in a region of self-organized multilayers (SOMs) that contain the basal to suprabasal transition, marked by the expressed levels of different types of keratins that indicate differentiation. Finally, we demonstrate the reconstructed skin tissue as an in vitro platform to study the pathogenic effects of PV and observe a significant difference in cell-cell junction dissociation from PV antibodies in different epidermis layers, indicating their applications in the preclinical test of possible therapies.
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Affiliation(s)
- Haiwei Zhai
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Xiaowei Jin
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Grayson Minnick
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Jordan Rosenbohm
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | | | - Ruiguo Yang
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
- Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Fanben Meng
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
- Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
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Wegrzynowska-Drzymalska K, Mlynarczyk DT, Chelminiak-Dudkiewicz D, Kaczmarek H, Goslinski T, Ziegler-Borowska M. Chitosan-Gelatin Films Cross-Linked with Dialdehyde Cellulose Nanocrystals as Potential Materials for Wound Dressings. Int J Mol Sci 2022; 23:ijms23179700. [PMID: 36077096 PMCID: PMC9456065 DOI: 10.3390/ijms23179700] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/20/2022] [Accepted: 08/24/2022] [Indexed: 11/17/2022] Open
Abstract
In this study, thin chitosan-gelatin biofilms cross-linked with dialdehyde cellulose nanocrystals for dressing materials were received. Two types of dialdehyde cellulose nanocrystals from fiber (DNCL) and microcrystalline cellulose (DAMC) were obtained by periodate oxidation. An ATR-FTIR analysis confirmed the selective oxidation of cellulose nanocrystals with the creation of a carbonyl group at 1724 cm−1. A higher degree of cross-linking was obtained in chitosan-gelatin biofilms with DNCL than with DAMC. An increasing amount of added cross-linkers resulted in a decrease in the apparent density value. The chitosan-gelatin biofilms cross-linked with DNCL exhibited a higher value of roughness parameters and antioxidant activity compared with materials cross-linked with DAMC. The cross-linking process improved the oxygen permeability and anti-inflammatory properties of both measurement series. Two samples cross-linked with DNCL achieved an ideal water vapor transition rate for wound dressings, CS-Gel with 10% and 15% addition of DNCL—8.60 and 9.60 mg/cm2/h, respectively. The swelling ability and interaction with human serum albumin (HSA) were improved for biofilms cross-linked with DAMC and DNCL. Significantly, the films cross-linked with DAMC were characterized by lower toxicity. These results confirmed that chitosan-gelatin biofilms cross-linked with DNCL and DAMC had improved properties for possible use in wound dressings.
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Affiliation(s)
- Katarzyna Wegrzynowska-Drzymalska
- Department of Biomedical Chemistry and Polymer Science, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
- Correspondence:
| | - Dariusz T. Mlynarczyk
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Dorota Chelminiak-Dudkiewicz
- Department of Biomedical Chemistry and Polymer Science, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
| | - Halina Kaczmarek
- Department of Biomedical Chemistry and Polymer Science, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
| | - Tomasz Goslinski
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Marta Ziegler-Borowska
- Department of Biomedical Chemistry and Polymer Science, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
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Silk Fibroin as Adjuvant in the Fabrication of Mechanically Stable Fibrin Biocomposites. Polymers (Basel) 2022; 14:polym14112251. [PMID: 35683920 PMCID: PMC9183065 DOI: 10.3390/polym14112251] [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: 05/05/2022] [Revised: 05/25/2022] [Accepted: 05/28/2022] [Indexed: 11/17/2022] Open
Abstract
Fibrin is a very attractive material for the development of tissue-engineered scaffolds due to its exceptional bioactivity, versatility in the fabrication, affinity to cell mediators; and the possibility to isolate it from blood plasma, making it autologous. However, fibrin application is greatly limited due to its low mechanical properties, fast degradation, and strong contraction in the presence of cells. In this study, we present a new strategy to overcome these drawbacks by combining it with another natural polymer: silk fibroin. Specifically, we fabricated biocomposites of fibrin (5 mg/mL) and silk fibroin (0.1, 0.5 and 1% w/w) by using a dual injection system, followed by ethanol annealing. The shear elastic modulus increased from 23 ± 5 Pa from fibrin alone, to 67 ± 22 Pa for fibrin/silk fibroin 0.1%, 241 ± 67 Pa for fibrin/silk fibroin 0.5% and 456 ± 32 Pa for fibrin/silk fibroin 1%. After culturing for 27 days with strong contractile cells (primary human arterial smooth muscle cells), fibrin/silk fibroin 0.5% and fibrin/silk fibroin 1% featured minimal cell-mediated contraction (ca. 15 and 5% respectively) in contrast with the large surface loss of the pure fibrin scaffolds (ca. 95%). Additionally, the composites enabled the formation of a proper endothelial cell layer after culturing with human primary endothelial cells under standard culture conditions. Overall, the fibrin/silk fibroin composites, manufactured within this study by a simple and scalable biofabrication approach, offer a promising avenue to boost the applicability of fibrin in tissue engineering.
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