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Biniazan F, Stoian A, Haykal S. Adipose-Derived Stem Cells: Angiogenetic Potential and Utility in Tissue Engineering. Int J Mol Sci 2024; 25:2356. [PMID: 38397032 PMCID: PMC10889096 DOI: 10.3390/ijms25042356] [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: 12/19/2023] [Revised: 02/07/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
Adipose tissue (AT) is a large and important energy storage organ as well as an endocrine organ with a critical role in many processes. Additionally, AT is an enormous and easily accessible source of multipotent cell types used in our day for all types of tissue regeneration. The ability of adipose-derived stem cells (ADSCs) to differentiate into other types of cells, such as endothelial cells (ECs), vascular smooth muscle cells, or cardiomyocytes, is used in tissue engineering in order to promote/stimulate the process of angiogenesis. Being a key for future successful clinical applications, functional vascular networks in engineered tissue are targeted by numerous in vivo and ex vivo studies. The article reviews the angiogenic potential of ADSCs and explores their capacity in the field of tissue engineering (TE).
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Affiliation(s)
- Felor Biniazan
- Latner Thoracic Research Laboratories, Division of Thoracic Surgery, Toronto General Hospital Research Institute, University Health Network, 200 Elizabeth Street Suite 8N-869, Toronto, ON M5G2C4, Canada; (F.B.); (A.S.)
| | - Alina Stoian
- Latner Thoracic Research Laboratories, Division of Thoracic Surgery, Toronto General Hospital Research Institute, University Health Network, 200 Elizabeth Street Suite 8N-869, Toronto, ON M5G2C4, Canada; (F.B.); (A.S.)
| | - Siba Haykal
- Latner Thoracic Research Laboratories, Division of Thoracic Surgery, Toronto General Hospital Research Institute, University Health Network, 200 Elizabeth Street Suite 8N-869, Toronto, ON M5G2C4, Canada; (F.B.); (A.S.)
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Toronto, 200 Elizabeth Street Suite 8N-869, Toronto, ON M5G2C4, Canada
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Huang PP, Zhang R, Zhang XF, Xu ZT, Zeng DC, Sun FB, Zhang WJ. Effects of ultrashort wave diathermy on skin wounds in rabbit ears. Connect Tissue Res 2023; 64:569-578. [PMID: 37550846 DOI: 10.1080/03008207.2023.2242655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 07/11/2023] [Accepted: 07/13/2023] [Indexed: 08/09/2023]
Abstract
PURPOSE Ultrashort wave diathermy (USWD) is commonly used in diseases associated with osteoarticular and soft tissue injuries. However, while accelerating wound healing and preventing joint stiffness, there have been few reports on whether it leads to excessive hypertrophic scarring. The aim was to investigate the effects of different doses of USWD on hypertrophic scars. MATERIALS AND METHODS A rabbit model of hypertrophic scars was used to determine which dose of USWD reduced scar hyperplasia. The scar thickness was calculated using Sirius red staining. All protein expression levels were determined by western blotting, including fibrosis, collagen deposition, and neoangiogenesis related proteins. Subsequently, flow cytometry and ELISAs were used to determine the proportions of macrophage and inflammatory levels. RESULTS The wounds with USWD in histopathology showed the dermis was more markedly thickened in the 120 mA group, whereas the wounds with the 60 mA were less raised, comparing with the 0 mA; all detected protein levels were increased significantly, the 120 mA group comparing with the others, including heat shock, fibrosis, and neoangiogenesis, whereas the collagen deposition relative protein levels were decreased, the 60 mA group comparing with Sham group; Finally, in the proportion of macrophages and inflammatory levels the 120 mA group were the highest, and the group Sham was lower than group 60 mA. CONCLUSIONS In hypertrophic scars, the 60 mA USWD could relieve scar formation and inflammatory reactions; however, higher doses could result in opposite consequences.
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Affiliation(s)
- Peng-Peng Huang
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital(Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Rui Zhang
- Department of Rehabilitation Medicine, The Second Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Xiao-Feng Zhang
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital(Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Zhi-Tao Xu
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital(Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Du-Chun Zeng
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital(Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Feng-Bao Sun
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital(Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Wen-Jie Zhang
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital(Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
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Secretome of Adipose-Derived Stem Cells Cultured in Platelet Lysate Improves Migration and Viability of Keratinocytes. Int J Mol Sci 2023; 24:ijms24043522. [PMID: 36834932 PMCID: PMC9962933 DOI: 10.3390/ijms24043522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/05/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Chronic wounds depict a silent epidemic challenging medical professionals worldwide. Regenerative medicine uses adipose-derived stem cells (ADSC) in promising new therapies. In this study, platelet lysate (PL) as a xenogen-free substitute for foetal bovine serum (FBS) in ADSC culture was used to create an ADSC secretome containing cytokines for optimal wound healing conditions. The ADSC secretome was tested on keratinocytes for migrational behaviour and viability. Therefore, human ADSC were characterized under FBS (10%) and PL (5% and 10%) substitution, regarding morphology, differentiation, viability, gene and protein expression. ADSC were then cultured in 5% PL and their secretome was used for stimulation of keratinocyte migration and viability. To enhance the effect, ADSC were treated with Epithelial Growth Factor (EGF, 100 ng/mL) and hypoxia (1% O₂). In both PL and FBS groups, ADSC expressed typical stem cell markers. PL induced a significantly higher increase in cell viability compared to FBS substitution. ADSC secretome contained various beneficial proteins which enhance the wound healing capacity of keratinocytes. This could be optimized treating ADSC with hypoxia and EGF. In conclusion, the study shows that ADSC cultivated in 5% PL can effectively support wound healing conditions and can be considered as a promising new therapy for individual treatment of chronic wound disorders.
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Development of an implantable three-dimensional model of a functional pathogenic multispecies biofilm to study infected wounds. Sci Rep 2022; 12:21846. [PMID: 36528648 PMCID: PMC9759537 DOI: 10.1038/s41598-022-25569-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022] Open
Abstract
Chronic wounds cannot heal due to impairment of regeneration, mainly caused by the persistent infection of multispecies biofilms. Still, the effects of biofilm wound infection and its interaction with the host are not fully described. We aimed to study functional biofilms in physiological conditions in vitro, and their potential effects in health and regeneration in vivo. Therefore, Pseudomonas aeruginosa, Staphylococcus aureus and Enterococcus faecalis were seeded in collagen-based scaffolds for dermal regeneration. After 24 h, scaffolds had bacterial loads depending on the initial inoculum, containing viable biofilms with antibiotic tolerance. Afterwards, scaffolds were implanted onto full skin wounds in mice, together with daily supervision and antibiotic treatment. Although all mice survived their health was affected, displaying fever and weight loss. After ten days, histomorphology of scaffolds showed high heterogeneity in samples and within groups. Wounds were strongly, mildly, or not infected according to colony forming units, and P. aeruginosa had higher identification frequency. Biofilm infection induced leucocyte infiltration and elevated interferon-γ and interleukin-10 in scaffolds, increase of size and weight of spleen and high systemic pro-calcitonin concentrations. This functional and implantable 3D biofilm model allows to study host response during infection, providing a useful tool for infected wounds therapy development.
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Almalki SG. Adipose-derived mesenchymal stem cells and wound healing: Potential clinical applications in wound repair. Saudi Med J 2022; 43:1075-1086. [PMID: 36261194 PMCID: PMC9994497 DOI: 10.15537/smj.2022.43.10.20220522] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/06/2022] [Indexed: 06/16/2023] Open
Abstract
Delayed and chronic wounds result from the dysregulation of molecular and cellular events associated with wound healing, including migration, inflammation, angiogenesis, extracellular matrix (ECM) remodeling, and re-epithelialization. Adipose tissue is an abundant, easily accessible, and rich source of mesenchymal stem cells (MSCs) with high therapeutic potential. In addition to their capability to differentiate into various lineages with specialized functions, adipose-derived MSCs (AMSCs) can mediate to the wound repair process through the secretion of different growth factors and mediators rather than making structural contribution alone. Adipose-derived MSCs mediate the formation of blood vessels, recruit progenitor cells, stimulate cell differentiation and ECM formation, and promote wound healing by releasing immune mediators and exosomes. Herein, we discuss and review the therapeutic potential of AMSCs for wound repair via acceleration of wound closure, re-epithelialization, enhancement of angiogenesis and immunomodulation of prolonged inflammatory responses, as well as the current challenges in clinical implementation.
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Affiliation(s)
- Sami G. Almalki
- From the Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah, Kingdom of Saudi Arabia
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Hu J, Song Y, Zhang C, Huang W, Chen A, He H, Zhang S, Chen Y, Tu C, Liu J, Xuan X, Chang Y, Zheng J, Wu J. Highly Aligned Electrospun Collagen/Polycaprolactone Surgical Sutures with Sustained Release of Growth Factors for Wound Regeneration. ACS APPLIED BIO MATERIALS 2020; 3:965-976. [DOI: 10.1021/acsabm.9b01000] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jinyu Hu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Yi Song
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Cuiyun Zhang
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Wen Huang
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Anqi Chen
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Huacheng He
- College of Chemistry and Materials Engineering Wenzhou University, Wenzhou, Zhejiang 325027, P.R. China
| | - Susu Zhang
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Yanxin Chen
- College of Chemistry and Materials Engineering Wenzhou University, Wenzhou, Zhejiang 325027, P.R. China
| | - Chaodong Tu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Jianhui Liu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Xuan Xuan
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P. R. China
| | - Yung Chang
- R&D Center for Membrane Technology and Department of Chemical Engineering Chung Yuan Christian University, Chung-Li, Taoyuan 320, Taiwan
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering The University of Akron, Akron, Ohio 44325, United States
| | - Jiang Wu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
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Electrical stimulation promotes the angiogenic potential of adipose-derived stem cells. Sci Rep 2019; 9:12076. [PMID: 31427631 PMCID: PMC6700204 DOI: 10.1038/s41598-019-48369-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 07/30/2019] [Indexed: 02/07/2023] Open
Abstract
Autologous fat transfer (AFT) is limited by post-operative volume loss due to ischemia-induced cell death in the fat graft. Previous studies have demonstrated that electrical stimulation (ES) promotes angiogenesis in a variety of tissues and cell types. In this study we investigated the effects of ES on the angiogenic potential of adipose-derived stem cells (ASC), important progenitor cells in fat grafts with proven angiogenic potential. Cultured human ASC were electrically stimulated for 72 hours after which the medium of stimulated (ES) and non-stimulated (control) ASC was analysed for angiogenesis-related proteins by protein array and ELISA. The functional effect of ES on angiogenesis was then assessed in vitro and in vivo. Nine angiogenesis-related proteins were detected in the medium of electrically (non-)stimulated ASC and were quantified by ELISA. The pro-angiogenic proteins VEGF and MCP-1 were significantly increased following ES compared to controls, while the anti-angiogenic factor Serpin E1/PAI-1 was significantly decreased. Despite increased levels of anti-angiogenic TSP-1 and TIMP-1, medium of ES-treated ASC significantly increased vessel density, total vessel network length and branching points in chorio-allantoic membrane assays. In conclusion, our proof-of-concept study showed that ES increased the angiogenic potential of ASC both in vitro and in vivo.
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Development of a Novel Polymer-Based mRNA Coating for Surgical Suture to Enhance Wound Healing. COATINGS 2019. [DOI: 10.3390/coatings9060374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A therapeutic strategy to improve wound healing has become an increasingly important medical task due to the rising incidence of adiposity and type II diabetes as well as the proceeding population aging. In order to cope with the resulting burdens, new strategies to achieve rapid and complete wound healing must now be developed. Accordingly, the development of a bioactive wound dressing in the form of a messengerRNA (mRNA)-bearing poly(lactide-co-glycolide acid) (PLGA) coating on surgical suture is being pushed further with this study. Furthermore, the evaluation of the polymer-based transfection reagent Viromer RED has shown that it can be used for the transfection of eukaryotic cells: The mRNA gets properly complexed and translated into a functional protein. In addition, the mRNA-PLGA coating triggered the expression of the keratinocyte growth factor (KGF) in HaCat cells although KGF is not expressed under physiological conditions. Moreover, transfection via surgical sutures coated with mRNA does not affect the cell viability and a proinflammatory reaction in the transfected cells is not induced. These properties make the mRNA-PLGA coating very attractive for the in vivo application. For the future, this could mean that through the use of mRNA-coated sutures in surgical wound closure, cells in the wound area can be transfected directly, thus accelerating and improving wound healing.
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Centeno-Cerdas C, Jarquín-Cordero M, Chávez MN, Hopfner U, Holmes C, Schmauss D, Machens HG, Nickelsen J, Egaña JT. Development of photosynthetic sutures for the local delivery of oxygen and recombinant growth factors in wounds. Acta Biomater 2018; 81:184-194. [PMID: 30287280 DOI: 10.1016/j.actbio.2018.09.060] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 09/27/2018] [Accepted: 09/28/2018] [Indexed: 02/06/2023]
Abstract
Surgical sutures represent the gold standard for wound closure, however, their main purpose is still limited to a mechanical function rather than playing a bioactive role. Since oxygen and pro-regenerative growth factors have been broadly described as key players for the healing process, in this study we evaluated the feasibility of generating photosynthetic sutures that, in addition to mechanical fixation, could locally and stably release oxygen and recombinant human growth factors (VEGF, PDGF-BB, or SDF-1α) at the wound site. Here, photosynthetic genetically modified microalgae were seeded in commercially available sutures and their distribution and proliferation capacity was evaluated. Additionally, the mechanical properties of seeded sutures were compared to unseeded controls that showed no significant differences. Oxygen production, as well as recombinant growth factor release was quantified in vitro over time, and confirmed that photosynthetic sutures are indeed a feasible approach for the local delivery of bioactive molecules. Finally, photosynthetic sutures were tested in order to evaluate their resistance to mechanical stress and freezing. Significant stability was observed in both conditions, and the feasibility of their use in the clinical practice was therefore confirmed. Our results suggest that photosynthetic gene therapy could be used to produce a new generation of bioactive sutures with improved healing capacities. STATEMENT OF SIGNIFICANCE: Disruption of the vascular network is intrinsic to trauma and surgery, and consequently, wound healing is characterized by diminished levels of blood perfusion. Among all the blood components, oxygen and pro-regenerative growth factors have been broadly described as key players for the healing process. Therefore, in this study we evaluated the feasibility of generating photosynthetic sutures that, in addition to mechanical fixation, could locally and stably release oxygen and recombinant human growth factors at the wound site. This novel concept has never been explored before for this type of material and represents the first attempt to create a new generation of bioactive sutures with improved regenerative capabilities.
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Affiliation(s)
- Carolina Centeno-Cerdas
- Department of Plastic Surgery and Hand Surgery, University Hospital rechts der Isar, Technische Universität München, Germany; Biotechnology Research Center, Instituto Tecnológico de Costa Rica, Cartago, Costa Rica
| | - Montserrat Jarquín-Cordero
- Biotechnology Research Center, Instituto Tecnológico de Costa Rica, Cartago, Costa Rica; Molekulare Pflanzenwissenschaften, Biozentrum Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Myra Noemi Chávez
- FONDAP Center for Genome Regulation, Faculty of Science, Universidad de Chile, Santiago, Chile; Advanced Center for Chronic Disease (ACCDiS) & Center for Molecular Studies of the Cell (CEMC), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Ursula Hopfner
- Department of Plastic Surgery and Hand Surgery, University Hospital rechts der Isar, Technische Universität München, Germany
| | - Christopher Holmes
- Institute for Biological and Medical Engineering, Schools of Engineering, Biological Sciences and Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Daniel Schmauss
- Department of Plastic Surgery and Hand Surgery, University Hospital rechts der Isar, Technische Universität München, Germany; Division of Plastic, Reconstructive and Aesthetic Surgery, Ospedale Regionale di Lugano, Ente Ospedaliero Cantonale, Lugano, Switzerland
| | - Hans-Günther Machens
- Department of Plastic Surgery and Hand Surgery, University Hospital rechts der Isar, Technische Universität München, Germany
| | - Jörg Nickelsen
- Molekulare Pflanzenwissenschaften, Biozentrum Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - José Tomás Egaña
- Institute for Biological and Medical Engineering, Schools of Engineering, Biological Sciences and Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
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Gallo AL, Pollini M, Paladini F. A combined approach for the development of novel sutures with antibacterial and regenerative properties: the role of silver and silk sericin functionalization. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:133. [PMID: 30094505 DOI: 10.1007/s10856-018-6142-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/30/2018] [Indexed: 06/08/2023]
Abstract
Chronic wounds and related infections cause physical and psychological distress in patients, increased mortality, disability and high health care costs. The healing process can be delayed by several factors and in particular by the risk of infections, which can be further complicated by the increasing number of antibiotic-resistant microorganisms. New approaches in wounds management have been encouraged, aiming at preventing infections and improving wound healing. In this scenario, silver has emerged as an ideal antimicrobial agent due to its recognized efficacy against bacteria, viruses and fungi. Moreover, silk and in particular silk sericin from Bombyx mori has demonstrated excellent biological properties and can be considered a good candidate for skin tissue engineering. In this study absorbable PLGA sutures were functionalized with silk sericin and, then, they were treated with silver through an in situ photochemical deposition technology in order to develop an antibacterial and regenerative biomedical device. Morphological analysis was performed by Scanning Electron Microscopy and Energy Dispersive X-Ray Spectroscopy (SEM-EDX) in order to evaluate the presence and distribution of silver deposited on the sutures. The stability and durability of the sericin/silver coatings were tested and the results were related to both antibacterial properties and sample degradation. The biological analyses also aimed at studying the biocompatibility and wound healing properties of the device, evaluating the synergistic effect between sericin and silver.
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Affiliation(s)
- Anna Lucia Gallo
- Department of Engineering for Innovation, University of Salento, Via Monteroni, Lecce, 73100, Italy
- Caresilk S.r.l.s., Via Monteroni c/o Technological District DHITECH, Lecce, 73100, Italy
| | - Mauro Pollini
- Department of Engineering for Innovation, University of Salento, Via Monteroni, Lecce, 73100, Italy.
- Caresilk S.r.l.s., Via Monteroni c/o Technological District DHITECH, Lecce, 73100, Italy.
| | - Federica Paladini
- Department of Engineering for Innovation, University of Salento, Via Monteroni, Lecce, 73100, Italy
- Caresilk S.r.l.s., Via Monteroni c/o Technological District DHITECH, Lecce, 73100, Italy
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Kontturi E, Laaksonen P, Linder MB, Gröschel AH, Rojas OJ, Ikkala O. Advanced Materials through Assembly of Nanocelluloses. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1703779. [PMID: 29504161 DOI: 10.1002/adma.201703779] [Citation(s) in RCA: 325] [Impact Index Per Article: 54.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/06/2017] [Indexed: 05/20/2023]
Abstract
There is an emerging quest for lightweight materials with excellent mechanical properties and economic production, while still being sustainable and functionalizable. They could form the basis of the future bioeconomy for energy and material efficiency. Cellulose has long been recognized as an abundant polymer. Modified celluloses were, in fact, among the first polymers used in technical applications; however, they were later replaced by petroleum-based synthetic polymers. Currently, there is a resurgence of interest to utilize renewable resources, where cellulose is foreseen to make again a major impact, this time in the development of advanced materials. This is because of its availability and properties, as well as economic and sustainable production. Among cellulose-based structures, cellulose nanofibrils and nanocrystals display nanoscale lateral dimensions and lengths ranging from nanometers to micrometers. Their excellent mechanical properties are, in part, due to their crystalline assembly via hydrogen bonds. Owing to their abundant surface hydroxyl groups, they can be easily modified with nanoparticles, (bio)polymers, inorganics, or nanocarbons to form functional fibers, films, bulk matter, and porous aerogels and foams. Here, some of the recent progress in the development of advanced materials within this rapidly growing field is reviewed.
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Affiliation(s)
- Eero Kontturi
- Department of Bioproducts and Biosystems, Aalto University, Espoo, FI-00076, Finland
| | - Päivi Laaksonen
- Department of Bioproducts and Biosystems, Aalto University, Espoo, FI-00076, Finland
- Center of Excellence Molecular Engineering of Biosynthetic Hybrid Materials Research, Aalto University and VTT, Espoo, FI-00076, Finland
| | - Markus B Linder
- Department of Bioproducts and Biosystems, Aalto University, Espoo, FI-00076, Finland
- Center of Excellence Molecular Engineering of Biosynthetic Hybrid Materials Research, Aalto University and VTT, Espoo, FI-00076, Finland
| | - André H Gröschel
- Physical Chemistry and Centre for Nanointegration (CENIDE), University of Duisburg-Essen, DE-45127, Essen, Germany
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, Aalto University, Espoo, FI-00076, Finland
- Center of Excellence Molecular Engineering of Biosynthetic Hybrid Materials Research, Aalto University and VTT, Espoo, FI-00076, Finland
- Department of Applied Physics, Aalto University, Espoo, FI-00076, Finland
| | - Olli Ikkala
- Department of Bioproducts and Biosystems, Aalto University, Espoo, FI-00076, Finland
- Center of Excellence Molecular Engineering of Biosynthetic Hybrid Materials Research, Aalto University and VTT, Espoo, FI-00076, Finland
- Department of Applied Physics, Aalto University, Espoo, FI-00076, Finland
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Duarah R, Singh YP, Gupta P, Mandal BB, Karak N. Smart self-tightening surgical suture from a tough bio-based hyperbranched polyurethane/reduced carbon dot nanocomposite. Biomed Mater 2018; 13:045004. [DOI: 10.1088/1748-605x/aab93c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Krebs VE, Elmallah RK, Khlopas A, Chughtai M, Bonutti PM, Roche M, Mont MA. Wound Closure Techniques for Total Knee Arthroplasty: An Evidence-Based Review of the Literature. J Arthroplasty 2018; 33:633-638. [PMID: 29066251 DOI: 10.1016/j.arth.2017.09.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 09/14/2017] [Accepted: 09/17/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND This literature review is aimed at identifying the different methods for superficial and deep wound closure in total knee arthroplasty and evaluating their outcomes. We evaluated (1) closure time, (2) infection and other complication rates, and (3) local wound-related outcomes. METHODS A thorough search of the literature was performed using 3 electronic databases. Inclusion criteria included manuscripts that were written in English and available in full-text format. Reports were stratified into those that describe deep closure (7) and those that describe superficial closure (11). RESULTS In superficial closure, staples may provide the fastest closure, adhesives, lower incidence of superficial complications, and subcuticular suture closures, greatest blood flow. In deep closure, barbed sutures may allow for faster closure time while providing similar postoperative complication rates and outcomes when compared to traditional sutures. The use of barbed sutures has been shown to utilize fewer resources and may potentially lead to a slight reduction in costs. CONCLUSION Ultimately, no optimal closure technique has been developed, and current studies do not provide a clear evidence-based answer. This field needs much more evidence-based studies before one can draw conclusions. Even though some of these studies are prospective and randomized, they may not be generalizable. Also, many of the studies have small numbers and are subject to type II errors and fragility. Certainly, more studies are needed to truly understand the advantages and disadvantages of these new methods. Nevertheless, this review allows orthopedists to evaluate the differences between closure methods.
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Affiliation(s)
- Viktor E Krebs
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Randa K Elmallah
- Department of Orthopaedic Surgery, University of Mississippi, Jackson, Mississippi
| | - Anton Khlopas
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Morad Chughtai
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Peter M Bonutti
- Department of Orthopaedic Surgery, Bonutti Clinic, Effingham, Illinois
| | - Martin Roche
- Department of Orthopaedic Surgery, Holy Cross Orthopedic Institute, Fort Lauderdale, Florida
| | - Michael A Mont
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
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Konstantinow A, Arnold A, Djabali K, Kempf W, Gutermuth J, Fischer T, Biedermann T. Therapy of ulcus cruris of venous and mixed venous arterial origin with autologous, adult, native progenitor cells from subcutaneous adipose tissue: a prospective clinical pilot study. J Eur Acad Dermatol Venereol 2017; 31:2104-2118. [PMID: 28750144 DOI: 10.1111/jdv.14489] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 07/11/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND The stromal vascular fraction (SVF) of adipose tissue consists of cellular subpopulations with distinct regenerative potential. OBJECTIVE To investigate the regenerative capacities of autologous SVF cells in the treatment of chronic leg ulcers of venous (VLU) and arterial-venous (AVLU) origin. METHODS Multimorbid ulcer patients received a singular topical treatment with 9-15 × 106 SVF cells, separated from abdominal lipoaspirates by digestion with collagenase and neutral protease and applied immediately after isolation. The primary endpoints were the change in wound size 12 weeks after treatment and evaluation of adverse events. Secondary endpoints included the time to complete wound epithelialization and change in pain levels. Postoperative wound treatment modalities and treatment of comorbidities were not intensified compared with pre-operative management. Follow-up period was at least 6 months. RESULTS Sixteen elderly ulcer patients (seven with VLU, nine with AVLU) were treated as described. All VLU patients (median ulcer size: 48.25 cm2 ) and four of nine AVLU patients showed complete epithelialization of the ulcers within 71-174 days. In three patients with large ulcerations on both legs, ulcerations on the non-treated, contralateral leg also epithelialized. Patients reported a considerable rapid decrease in pain intensity by 2.5 points on average on a visual scale from 1 to 5 within the first 2 weeks after treatment. The patients were followed up for 9-44 months (median: 30 months). No severe side-effects were observed. CONCLUSIONS The use of SVF cells presents an effective, minimally invasive option for the treatment of VLU and AVLU even in multimorbid patients. In patients with larger predominantly ischaemic AVLU and comorbidities, one-time application of the used amounts of SVF cells was not sufficient in the majority of cases.
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Affiliation(s)
- A Konstantinow
- Department of Dermatology and Allergology, Technical University Munich, Munich, Germany
| | - A Arnold
- Department of Dermatology and Allergology, Technical University Munich, Munich, Germany
| | - K Djabali
- School of Medicine, Epigenetic of Aging, Technical University Munich, Garching, Germany
| | - W Kempf
- Department of Dermatology and Allergology, Technical University Munich, Munich, Germany
| | - J Gutermuth
- Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - T Fischer
- Department of Dermatology and Allergology, Technical University Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergology, Technical University Munich, Munich, Germany
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Laurén P, Somersalo P, Pitkänen I, Lou YR, Urtti A, Partanen J, Seppälä J, Madetoja M, Laaksonen T, Mäkitie A, Yliperttula M. Nanofibrillar cellulose-alginate hydrogel coated surgical sutures as cell-carrier systems. PLoS One 2017; 12:e0183487. [PMID: 28829830 PMCID: PMC5567492 DOI: 10.1371/journal.pone.0183487] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 08/05/2017] [Indexed: 12/18/2022] Open
Abstract
Hydrogel nanomaterials, especially those that are of non-human and non-animal origins, have great potential in biomedical and pharmaceutical sciences due to their versatility and inherent soft-tissue like properties. With the ability to simulate native tissue function, hydrogels are potentially well suited for cellular therapy applications. In this study, we have fabricated nanofibrillar cellulose-alginate (NFCA) suture coatings as biomedical devices to help overcome some of the limitations related to cellular therapy, such as low cell survivability and distribution out of target tissue. The addition of sodium alginate 8% (w/v) increased the NFCA hydrogel viscosity, storage and loss moduli by slightly under one order of magnitude, thus contributing significantly to coating strength. Confocal microscopy showed nearly 100% cell viability throughout the 2-week incubation period within and on the surface of the coating. Additionally, typical morphologies in the dual cell culture of spheroid forming HepG2 and monolayer type SK-HEP-1 were observed. Twelve out of 14 NFCA coated surgical sutures remained intact during the suturing operation with various mice and rat tissue; however, partial peeling off was observed in 2 of the coated sutures. We conclude that NFCA suture coatings could perform as cell-carrier systems for cellular based therapy and post-surgical treatment.
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Affiliation(s)
- Patrick Laurén
- Division of Pharmaceutical Biosciences, Centre for Drug Research, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Petter Somersalo
- Division of Pharmaceutical Biosciences, Centre for Drug Research, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Irina Pitkänen
- Department of Engineering Design and Production, School of Engineering, Aalto University, Espoo, Finland
| | - Yan-Ru Lou
- Division of Pharmaceutical Biosciences, Centre for Drug Research, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Arto Urtti
- Division of Pharmaceutical Biosciences, Centre for Drug Research, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
- School of Pharmacy, University of Eastern Finland, Kuopio, Finland
| | - Jouni Partanen
- Department of Engineering Design and Production, School of Engineering, Aalto University, Espoo, Finland
| | - Jukka Seppälä
- Department of Engineering Design and Production, School of Engineering, Aalto University, Espoo, Finland
| | | | - Timo Laaksonen
- Division of Pharmaceutical Biosciences, Centre for Drug Research, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
- Department of Chemistry and Bioengineering, Tampere University of Technology, Tampere, Finland
| | - Antti Mäkitie
- Department of Otorhinolaryngology—Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Marjo Yliperttula
- Division of Pharmaceutical Biosciences, Centre for Drug Research, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
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Halib N, Perrone F, Cemazar M, Dapas B, Farra R, Abrami M, Chiarappa G, Forte G, Zanconati F, Pozzato G, Murena L, Fiotti N, Lapasin R, Cansolino L, Grassi G, Grassi M. Potential Applications of Nanocellulose-Containing Materials in the Biomedical Field. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E977. [PMID: 28825682 PMCID: PMC5578343 DOI: 10.3390/ma10080977] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/11/2017] [Accepted: 08/16/2017] [Indexed: 02/06/2023]
Abstract
Because of its high biocompatibility, bio-degradability, low-cost and easy availability, cellulose finds application in disparate areas of research. Here we focus our attention on the most recent and attractive potential applications of cellulose in the biomedical field. We first describe the chemical/structural composition of cellulose fibers, the cellulose sources/features and cellulose chemical modifications employed to improve its properties. We then move to the description of cellulose potential applications in biomedicine. In this field, cellulose is most considered in recent research in the form of nano-sized particle, i.e., nanofiber cellulose (NFC) or cellulose nanocrystal (CNC). NFC is obtained from cellulose via chemical and mechanical methods. CNC can be obtained from macroscopic or microscopic forms of cellulose following strong acid hydrolysis. NFC and CNC are used for several reasons including the mechanical properties, the extended surface area and the low toxicity. Here we present some potential applications of nano-sized cellulose in the fields of wound healing, bone-cartilage regeneration, dental application and different human diseases including cancer. To witness the close proximity of nano-sized cellulose to the practical biomedical use, examples of recent clinical trials are also reported. Altogether, the described examples strongly support the enormous application potential of nano-sized cellulose in the biomedical field.
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Affiliation(s)
- Nadia Halib
- Department of Basic Sciences & Oral Biology, Faculty of Dentistry, Universiti Sains Islam Malaysia, Level 15, Tower B, Persiaran MPAJ, Jalan Pandan Utama, Kuala Lumpur 55100, Malaysia;.
| | - Francesca Perrone
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Strada di Fiume 447, I-34149 Trieste, Italy.
| | - Maja Cemazar
- Institute of Oncology Ljubljana, Zaloska 2, SI-1000 Ljubljana, Slovenia.
| | - Barbara Dapas
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Strada di Fiume 447, I-34149 Trieste, Italy.
| | - Rossella Farra
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
| | - Michela Abrami
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
| | - Gianluca Chiarappa
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
| | - Giancarlo Forte
- Center for Translational Medicine, International Clinical Research Center, St. Anne's University Hospital, Pekarska 53, 656 91 Brno, Czech Republic.
| | - Fabrizio Zanconati
- Surgery and Health Sciences, Department of Medical, Cattinara Hospital, University of Trieste, I-34127 Trieste, Italy.
| | - Gabriele Pozzato
- Surgery and Health Sciences, Department of Medical, Cattinara Hospital, University of Trieste, I-34127 Trieste, Italy.
| | - Luigi Murena
- Surgery and Health Sciences, Department of Medical, Cattinara Hospital, University of Trieste, I-34127 Trieste, Italy.
| | - Nicola Fiotti
- Surgery and Health Sciences, Department of Medical, Cattinara Hospital, University of Trieste, I-34127 Trieste, Italy.
| | - Romano Lapasin
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
| | - Laura Cansolino
- Department of Clinico-Surgical Sciences, Experimental Surgery Laboratory, University of Pavia and IRCCS S, Matteo Hospital Pavia, 27100 Pavia, Italy.
| | - Gabriele Grassi
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Strada di Fiume 447, I-34149 Trieste, Italy.
| | - Mario Grassi
- Department of Engineering and Architecture, University of Trieste, Via Valerio 6/A, I-34127 Trieste, Italy.
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Vuoriluoto M, Orelma H, Lundahl M, Borghei M, Rojas OJ. Filaments with Affinity Binding and Wet Strength Can Be Achieved by Spinning Bifunctional Cellulose Nanofibrils. Biomacromolecules 2017; 18:1803-1813. [PMID: 28436646 DOI: 10.1021/acs.biomac.7b00256] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We demonstrate benzophenone (BP) conjugation via amine-reactive esters onto oxidized cellulosic fibers that were used as precursors, after microfluidization, of photoactive cellulose nanofibrils (CNF). From these fibrils, cellulose I filaments were synthesized by hydrogel spinning in an antisolvent followed by fast biradical UV cross-linking. As a result, the wet BP-CNF filaments retained extensively the original dry strength (a remarkable ∼80% retention). Thus, the principal limitation of these emerging materials was overcome (the wet tensile strength is typically <0.5% of the value measured in dry conditions). Subsequently, antihuman hemoglobin (anti-Hb) antibodies were conjugated onto residual surface carboxyl groups, making the filaments bifunctional for their active groups and properties (wet strength and bioactivity). Optical (surface plasmon resonance) and electroacoustic (quartz crystal microgravimetry) measurements conducted with the bifunctional CNF indicated effective anti-Hb conjugation (2.4 mg m-2), endowing an excellent sensitivity toward Hb targets (1.7 ± 0.12 mg m-2) and negligible nonspecific binding. Thus, the anti-Hb biointerface was deployed on filaments that captured Hb efficiently from aqueous matrices (confocal laser microscopy of FITC-labeled antibodies). Significantly, the anti-Hb biointerface was suitable for regeneration, while its sensitivity and selectivity in affinity binding can be tailored by application of blocking copolymers. The developed bifunctional filaments based on nanocellulose offer great promise in detection and affinity binding built upon 1D systems, which can be engineered into other structures for rational use of material and space.
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Affiliation(s)
- Maija Vuoriluoto
- Biobased Colloids and Materials group (BiCMat), Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University , FI-00076, Espoo, Finland
| | - Hannes Orelma
- Biobased Colloids and Materials group (BiCMat), Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University , FI-00076, Espoo, Finland
| | - Meri Lundahl
- Biobased Colloids and Materials group (BiCMat), Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University , FI-00076, Espoo, Finland
| | - Maryam Borghei
- Biobased Colloids and Materials group (BiCMat), Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University , FI-00076, Espoo, Finland
| | - Orlando J Rojas
- Biobased Colloids and Materials group (BiCMat), Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University , FI-00076, Espoo, Finland.,Department of Chemical and Biomolecular Engineering, North Carolina State University , Raleigh, North Carolina 27695, United States.,Department of Applied Physics, School of Science, Aalto University , FI-00076, Espoo, Finland
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Anti-Microbial Biopolymer Hydrogel Scaffolds for Stem Cell Encapsulation. Polymers (Basel) 2017; 9:polym9040149. [PMID: 30970828 PMCID: PMC6431895 DOI: 10.3390/polym9040149] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 04/18/2017] [Accepted: 04/20/2017] [Indexed: 01/09/2023] Open
Abstract
Biopolymer hydrogels are an attractive class of materials for wound dressings and other biomedical applications because of their ease of use and availability from biomass. Here, we present a hydrogel formation approach based on alginate and chitosan. Alginate is conventionally cross-linked using multivalent ions such as Ca2+ but in principle any polycationic species can be used such as polyelectrolytes. Exchanging the cross-linking Ca2+ ions partially with chitosan, which at pH 7 has available positive charges as well as good interactions with Ca2+, leads to an improved Young’s modulus. This gel is non-toxic to mammalian cells and hence allows conveniently for stem cell encapsulation since it is based on two-component mixing and gel formation. Additionally, the chitosan is known to have a bactericidal effect which is retained when using it in the alginate–chitosan gel formation and the formed hydrogels displayed bactericidal effects against P. aeruginosa and S. aureus. The combination of anti-bacterial properties, inclusion of stem cells, and the hydrogel nature would provide an ideal environment for complex wound healing.
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Ye X, Liao C, Liu G, Xu Y, Tan J, Song Z. Age-Related Changes in the Regenerative Potential of Adipose-Derived Stem Cells Isolated from the Prominent Fat Pads in Human Lower Eyelids. PLoS One 2016; 11:e0166590. [PMID: 27855196 PMCID: PMC5113966 DOI: 10.1371/journal.pone.0166590] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 10/31/2016] [Indexed: 12/16/2022] Open
Abstract
The existence of multipotent adipose-derived stem cells isolated from human orbital fat (OF) tissue has shown great therapeutic potential in tissue engineering and regenerative medicine. But the use of stem cells for therapeutic applications is influenced by their proliferative and differentiation potentials, which may be affected by the age of the donor. So far there is little knowledge about the effects of donor age on the biological properties of human orbital adipose-derived stem cells (OASCs). The intraorbital fat protrusion in the lower eyelids occurs as an aging process, and the protruded fat is routinely removed during aesthetic surgeries. Based on the ease of OF harvest and the availability of OASCs, we investigated in this study the relationship between age and the differentiation and proliferation potentials of human OASCs. Human orbital adipose samples were harvested from young (with normal lower eyelid appearance) and old donors (having protruded fat pads in the lower eyelids). The morphological properties of orbital adipocytes were assessed and the fat cell size displayed a decreasing trend with advancing age. OASCs were isolated from the fat samples, expanded in vitro and cultured under appropriate inducive conditions. Compared to the young cells, although no difference was found in the cell yield and phenotype expression, aged OASCs showed fewer progenitor cell numbers, reduced proliferative rates, increased senescent features and decreased differentiation potentials towards adipogenic, osteogenic and chondrogenic lineages. Our data suggested that using autologous OASCs from elderly patients for potential therapeutic purposes might be restricted.
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Affiliation(s)
- Xinhai Ye
- Department of Plastic and Reconstructive Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Caihe Liao
- Department of Plastic and Reconstructive Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Guangpeng Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- * E-mail: (GPL); (ZSS)
| | - Yipin Xu
- Department of Plastic and Reconstructive Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jian Tan
- Department of Plastic and Reconstructive Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhenshun Song
- Department of Hepatobiliary and Pancreatic Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- * E-mail: (GPL); (ZSS)
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The Effect of Adipose-Derived Stem Cells on Full-Thickness Skin Grafts. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1464725. [PMID: 27413735 PMCID: PMC4931067 DOI: 10.1155/2016/1464725] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/03/2016] [Accepted: 05/11/2016] [Indexed: 11/25/2022]
Abstract
Background. The purpose of this study was to evaluate the effects of ASCs on full-thickness skin grafts. Specifically, we investigated the anti-inflammatory effects of ASCs that are mediated via regulation of the phenotypes of activated macrophages. Methods. ASCs were isolated, cultured, and injected under full-thickness skin grafts in 15 rats (ASC group). An additional 15 rats served as controls (PBS group). Skin graft survival assessment and vascularization detection were assessed with H&E staining and laser Doppler blood flowmetry (LDF). The effects of ASCs on angiogenesis, anti-inflammation, collagen accumulation-promoting, and antiscarring were assessed. Results. We found that the skin graft survival rate was significantly increased in the ASC group. The neovascularization, collagen deposition, collagen type I to type III ratio, and levels of VEGF and TGF-β3 in the ASC group were markedly higher than those in the PBS group at day 14. Additionally, in the ASC group, the levels of iNOS, IL-1β, and TNF-α were remarkably decreased, whereas the levels of IL-10 and Arg-1 were substantially increased. Conclusions. Our results confirm that ASCs transplantation can effectively improve full-thickness skin graft survival. Additionally, the anti-inflammatory role of ASCs may indirectly contribute to skin graft survival via its effect on macrophage polarization.
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21
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Jin GZ, Park JH, Wall I, Kim HW. Isolation and culture of primary rat adipose derived stem cells using porous biopolymer microcarriers. Tissue Eng Regen Med 2016; 13:242-250. [PMID: 30603405 DOI: 10.1007/s13770-016-0040-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 03/22/2016] [Accepted: 03/28/2016] [Indexed: 01/16/2023] Open
Abstract
Adipose-derived stem cells (ADSCs) are an attractive source of material for mesenchymal stem cell research due to the abundance of adipose and relative ease of access compared with bone marrow. A key consideration for research is whether cell isolation methods can be improved, to reduce the process steps needed to isolate and expand cell material. In the current study, we used macroporous biopolymer microcarriers to isolate primary ADSCs. We found that the method was capable of isolating ADSCs that were subsequently capable of being transferred to culture dishes and expanded in vitro. Moreover, flow cytometry revealed that they expressed typical stem cell markers and were capable of undergoing tri-lineage differentiation. In summary, it is feasible to use biopolymer microcarriers for retrieval of viable ADSCs that retain identity markers of stem cell function.
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Affiliation(s)
- Guang-Zhen Jin
- 1Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan, 31116 Korea.,2Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Korea
| | - Jeong-Hui Park
- 1Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan, 31116 Korea.,2Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Korea
| | - Ivan Wall
- 1Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan, 31116 Korea.,3Department of Biochemical Engineering, University College London, Gordon Street, London, WC1H 0AH UK
| | - Hae-Won Kim
- 1Institute of Tissue Regeneration Engineering (ITREN), Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan, 31116 Korea.,2Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Korea.,4Department of Biomaterials Science, Dankook University Dental College, Cheonan, Korea
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22
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Dennis C, Sethu S, Nayak S, Mohan L, Morsi YY, Manivasagam G. Suture materials - Current and emerging trends. J Biomed Mater Res A 2016; 104:1544-59. [DOI: 10.1002/jbm.a.35683] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 01/07/2016] [Accepted: 02/05/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Christopher Dennis
- Centre for Biomaterials Science and Technology, School of Mechanical and Building Sciences, VIT University; Vellore Tamil Nadu 632014 India
| | - Swaminathan Sethu
- GROW Research Laboratory, Narayana Nethralaya Foundation; Bangalore Karnataka 560099 India
| | - Sunita Nayak
- Centre for Biomaterials Science and Technology, School of Mechanical and Building Sciences, VIT University; Vellore Tamil Nadu 632014 India
- School of Bio Sciences and Technology, VIT University; Vellore Tamil Nadu 632014 India
| | - Loganathan Mohan
- Surface Engineering Division; CSIR - National Aerospace Laboratories; Bangalore Karnataka 560017 India
| | - Yosry Yos Morsi
- Biomechanical and Tissue Engineering Labs, Faculty of Science, Engineering and Technology, Swinburne University of Technology; Australia
| | - Geetha Manivasagam
- Centre for Biomaterials Science and Technology, School of Mechanical and Building Sciences, VIT University; Vellore Tamil Nadu 632014 India
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Mertaniemi H, Escobedo-Lucea C, Sanz-Garcia A, Gandía C, Mäkitie A, Partanen J, Ikkala O, Yliperttula M. Human stem cell decorated nanocellulose threads for biomedical applications. Biomaterials 2016; 82:208-20. [DOI: 10.1016/j.biomaterials.2015.12.020] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 12/16/2015] [Accepted: 12/16/2015] [Indexed: 01/07/2023]
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Mesenchymal Stem Cells in Lipogems, a Reverse Story: from Clinical Practice to Basic Science. Methods Mol Biol 2016; 1416:109-22. [PMID: 27236668 DOI: 10.1007/978-1-4939-3584-0_6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The idea that basic science should be the starting point for modern clinical approaches has been consolidated over the years, and emerged as the cornerstone of Molecular Medicine. Nevertheless, there is increasing concern over the low efficiency and inherent costs related to the translation of achievements from the bench to the bedside. These burdens are also perceived with respect to the effectiveness of translating basic discoveries in stem cell biology to the newly developing field of advanced cell therapy or Regenerative Medicine. As an alternative paradigm, past and recent history in Medical Science provides remarkable reverse stories in which clinical observations at the patient's bedside have fed major advances in basic research which, in turn, led to consistent progression in clinical practice. Within this context, we discuss our recently developed method and device, which forms the core of a system (Lipogems) for processing of human adipose tissue solely with the aid of mild mechanical forces to yield a microfractured tissue product.
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Wang W, Lee Y, Lee CH. Effects of nitric oxide on stem cell therapy. Biotechnol Adv 2015; 33:1685-96. [PMID: 26394194 DOI: 10.1016/j.biotechadv.2015.09.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 09/14/2015] [Accepted: 09/18/2015] [Indexed: 12/27/2022]
Abstract
The use of stem cells as a research tool and a therapeutic vehicle has demonstrated their great potential in the treatment of various diseases. With unveiling of nitric oxide synthase (NOS) universally present at various levels in nearly all types of body tissues, the potential therapeutic implication of nitric oxide (NO) has been magnified, and thus scientists have explored new treatment strategies involved with stem cells and NO against various diseases. As the functionality of NO encompasses cardiovascular, neuronal and immune systems, NO is involved in stem cell differentiation, epigenetic regulation and immune suppression. Stem cells trigger cellular responses to external signals on the basis of both NO specific pathways and concerted action with endogenous compounds including stem cell regulators. As potency and interaction of NO with stem cells generally depend on the concentrations of NO and the presence of the cofactors at the active site, the suitable carriers for NO delivery is integral for exerting maximal efficacy of stem cells. The innovative utilization of NO functionality and involved mechanisms would invariably alter the paradigm of therapeutic application of stem cells. Future prospects in NO-involved stem cell research which promises to enhance drug discovery efforts by opening new era to improve drug efficacy, reduce drug toxicity and understand disease mechanisms and pathways, were also addressed.
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Affiliation(s)
- Wuchen Wang
- School of Pharmacy University of Missouri, Kansas City, USA
| | - Yugyung Lee
- School of Computing and Engineering, University of Missouri, Kansas City, USA
| | - Chi H Lee
- School of Pharmacy University of Missouri, Kansas City, USA.
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Boateng J, Catanzano O. Advanced Therapeutic Dressings for Effective Wound Healing--A Review. J Pharm Sci 2015; 104:3653-3680. [PMID: 26308473 DOI: 10.1002/jps.24610] [Citation(s) in RCA: 474] [Impact Index Per Article: 52.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 12/15/2022]
Abstract
Advanced therapeutic dressings that take active part in wound healing to achieve rapid and complete healing of chronic wounds is of current research interest. There is a desire for novel strategies to achieve expeditious wound healing because of the enormous financial burden worldwide. This paper reviews the current state of wound healing and wound management products, with emphasis on the demand for more advanced forms of wound therapy and some of the current challenges and driving forces behind this demand. The paper reviews information mainly from peer-reviewed literature and other publicly available sources such as the US FDA. A major focus is the treatment of chronic wounds including amputations, diabetic and leg ulcers, pressure sores, and surgical and traumatic wounds (e.g., accidents and burns) where patient immunity is low and the risk of infections and complications are high. The main dressings include medicated moist dressings, tissue-engineered substitutes, biomaterials-based biological dressings, biological and naturally derived dressings, medicated sutures, and various combinations of the above classes. Finally, the review briefly discusses possible prospects of advanced wound healing including some of the emerging physical approaches such as hyperbaric oxygen, negative pressure wound therapy and laser wound healing, in routine clinical care.
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Affiliation(s)
- Joshua Boateng
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK.
| | - Ovidio Catanzano
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK
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