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You Y, Ning X, Zhang X, Wang Y, Zhang Y, Mao K, Wang Y, Wu T, Zhang W. Development of magnesium hydroxide-doped nanofibrous spheres for repairing infected skin wounds. BIOMATERIALS ADVANCES 2024; 163:213967. [PMID: 39068744 DOI: 10.1016/j.bioadv.2024.213967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 07/16/2024] [Accepted: 07/22/2024] [Indexed: 07/30/2024]
Abstract
The healing of skin wounds is a continuous and coordinated process, typically accompanied by microbial colonization and growth. This may result in wound infection and subsequent delay in wound healing. Therefore, it is of particular importance to inhibit the growth of microorganisms in the wound environment. In this study, magnesium hydroxide-doped polycaprolactone (PCL/MH) nanofibrous spheres were fabricated by electrospinning and electrospray techniques to investigate their effects on infected wound healing. The prepared PCL/MH nanofibrous spheres had good porous structure and biocompatibility, providing a favorable environment for the delivery and proliferation of adipose stem cells. The incorporation of MH significantly enhanced the antimicrobial properties of the spheres, in particular, the inhibition of the growth of S. aureus and E. coli. We showed that such PCL/MH nanofibrous spheres had good antimicrobial properties and effectively promoted the regeneration of infected wound tissues, which provided a new idea for the clinical treatment of infected wounds.
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Affiliation(s)
- Yong You
- The Affiliated Hospital of Qingdao University, Qingdao Medical College, Qingdao University, Qingdao 266000, China
| | - Xuchao Ning
- Department of Plastic Surgery, Qilu Hospital Qingdao, Cheeloo College of Medicine, Shandong University, Qingdao 266035, China
| | - Xiaopei Zhang
- The Affiliated Hospital of Qingdao University, Qingdao Medical College, Qingdao University, Qingdao 266000, China; Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, School of Basic Medicine, Qingdao University, Qingdao 266071, China; Shandong Key Laboratory of Medical and Health Textile Materials, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, College of Textile & Clothing, Qingdao University, Qingdao 266071, China
| | - Yawen Wang
- The Affiliated Hospital of Qingdao University, Qingdao Medical College, Qingdao University, Qingdao 266000, China; Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, School of Basic Medicine, Qingdao University, Qingdao 266071, China; Shandong Key Laboratory of Medical and Health Textile Materials, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, College of Textile & Clothing, Qingdao University, Qingdao 266071, China
| | - Yifan Zhang
- The Affiliated Hospital of Qingdao University, Qingdao Medical College, Qingdao University, Qingdao 266000, China
| | - Kaiping Mao
- The Affiliated Hospital of Qingdao University, Qingdao Medical College, Qingdao University, Qingdao 266000, China
| | - Yuanfei Wang
- Qingdao Stomatological Hospital Affiliated to Qingdao University, Qingdao 266001, China.
| | - Tong Wu
- The Affiliated Hospital of Qingdao University, Qingdao Medical College, Qingdao University, Qingdao 266000, China; Shandong Key Laboratory of Medical and Health Textile Materials, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, College of Textile & Clothing, Qingdao University, Qingdao 266071, China.
| | - Weina Zhang
- The Affiliated Hospital of Qingdao University, Qingdao Medical College, Qingdao University, Qingdao 266000, China.
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Croitoru AM, Ficai D, Ficai A, Mihailescu N, Andronescu E, Turculet CF. Nanostructured Fibers Containing Natural or Synthetic Bioactive Compounds in Wound Dressing Applications. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2407. [PMID: 32456196 PMCID: PMC7287851 DOI: 10.3390/ma13102407] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/11/2020] [Accepted: 05/21/2020] [Indexed: 12/15/2022]
Abstract
The interest in wound healing characteristics of bioactive constituents and therapeutic agents, especially natural compounds, is increasing because of their therapeutic properties, cost-effectiveness, and few adverse effects. Lately, nanocarriers as a drug delivery system have been actively investigated and applied in medical and therapeutic applications. In recent decades, researchers have investigated the incorporation of natural or synthetic substances into novel bioactive electrospun nanofibrous architectures produced by the electrospinning method for skin substitutes. Therefore, the development of nanotechnology in the area of dressings that could provide higher performance and a synergistic effect for wound healing is needed. Natural compounds with antimicrobial, antibacterial, and anti-inflammatory activity in combination with nanostructured fibers represent a future approach due to the increased wound healing process and regeneration of the lost tissue. This paper presents different approaches in producing electrospun nanofibers, highlighting the electrospinning process used in fabricating innovative wound dressings that are able to release natural and/or synthetic substances in a controlled way, thus enhancing the healing process.
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Affiliation(s)
- Alexa-Maria Croitoru
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 011061 Bucharest, Romania; (A.-M.C.); (D.F.); (A.F.); (E.A.)
| | - Denisa Ficai
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 011061 Bucharest, Romania; (A.-M.C.); (D.F.); (A.F.); (E.A.)
| | - Anton Ficai
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 011061 Bucharest, Romania; (A.-M.C.); (D.F.); (A.F.); (E.A.)
- Academy of Romanian Scientists, Spl. Independentei 54, 050094 Bucharest, Romania
| | - Natalia Mihailescu
- Laser Department, National Institute for Laser, Plasma & Radiation Physics, Atomistilor St. 409, 077125 Magurele, Romania
| | - Ecaterina Andronescu
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 011061 Bucharest, Romania; (A.-M.C.); (D.F.); (A.F.); (E.A.)
- Academy of Romanian Scientists, Spl. Independentei 54, 050094 Bucharest, Romania
| | - Claudiu Florin Turculet
- Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, Eroii Sanitari St. 8, 050474 Bucharest, Romania;
- Emergency Hospital Floreasca Bucharest, Calea Floreasca St. 8, 014461 Bucharest, Romania
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A review on fabrication of nanofibers via electrospinning and their applications. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1288-4] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Affiliation(s)
- Suwan N. Jayasinghe
- BioPhysics Group, UCL Centre for Stem Cells and Regenerative Medicine; UCL Department of Mechanical Engineering and UCL Institute of Healthcare Engineering; University College London; Torrington Place London WC1E 7JE United Kingdom
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Brennan MÁ, Renaud A, Gamblin AL, D'Arros C, Nedellec S, Trichet V, Layrolle P. 3D cell culture and osteogenic differentiation of human bone marrow stromal cells plated onto jet-sprayed or electrospun micro-fiber scaffolds. ACTA ACUST UNITED AC 2015; 10:045019. [PMID: 26238732 DOI: 10.1088/1748-6041/10/4/045019] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A major limitation of the 2D culture systems is that they fail to recapitulate the in vivo 3D cellular microenvironment whereby cell-cell and cell-extracellular matrix (ECM) interactions occur. In this paper, a biomaterial scaffold that mimics the structure of collagen fibers was produced by jet-spraying. This micro-fiber polycaprolactone (PCL) scaffold was evaluated for 3D culture of human bone marrow mesenchymal stromal cells (MSCs) in comparison with a commercially available electrospun scaffold. The jet-sprayed scaffolds had larger pore diameters, greater porosity, smaller diameter fibers, and more heterogeneous fiber diameter size distribution compared to the electrospun scaffolds. Cells on jet-sprayed constructs exhibited spread morphology with abundant cytoskeleton staining, whereas MSCs on electrospun scaffolds appeared less extended with fewer actin filaments. MSC proliferation and cell infiltration occurred at a faster rate on jet-sprayed compared to electrospun scaffolds. Osteogenic differentiation of MSCs and ECM production as measured by ALP, collagen and calcium deposition was superior on jet-sprayed compared to electrospun scaffolds. The jet-sprayed scaffold which mimics the native ECM and permits homogeneous cell infiltration is important for 3D in vitro applications such as bone cellular interaction studies or drug testing, as well as bone tissue engineering strategies.
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Affiliation(s)
- Meadhbh Á Brennan
- INSERM UMR 957, Laboratory of Pathophysiology of Bone Resorption and Primary Bone Tumour Therapy, Faculty of Medicine, University of Nantes, France
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Min SY, Kim TS, Lee Y, Cho H, Xu W, Lee TW. Organic nanowire fabrication and device applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:45-62. [PMID: 25285601 DOI: 10.1002/smll.201401487] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 08/06/2014] [Indexed: 05/23/2023]
Abstract
Organic nanowires (ONWs) are flexible, stretchable, and have good electrical properties, and therefore have great potential for use in next-generation textile and wearable electronics. Analysis of trends in ONWs supports their great potential for various stretchable and flexible electronic applications such as flexible displays and flexible photovoltaics. Numerous methods can be used to prepare ONWs, but the practical industrial application of ONWs has not been achieved because of the lack of reliable techniques for controlling and patterning of individual nanowires. Therefore, an "individually controllable" technique to fabricate ONWs is essential for practical device applications. In this paper, three types of fabrication methods of ONWs are reviewed: non-alignment methods, massive-alignment methods, and individual-alignment methods. Recent research on electronic and photonic device applications of ONWs is then reviewed. Finally, suggestions for future research are put forward.
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Affiliation(s)
- Sung-Yong Min
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
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Sampson SL, Saraiva L, Gustafsson K, Jayasinghe SN, Robertson BD. Cell electrospinning: an in vitro and in vivo study. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:78-82. [PMID: 23894081 DOI: 10.1002/smll.201300804] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 06/28/2013] [Indexed: 05/11/2023]
Abstract
Cell electrospinning and aerodynamically assisted bio-threading are novel bioplatforms for directly forming large quantities of cell-laden scaffolds for creating living sheets and vessels in three-dimensions. The functional biological architectures generated will be useful in both the laboratory and the clinic.
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Affiliation(s)
- Samantha L Sampson
- MRC Centre for Molecular Bacteriology & Infection, Flowers Building, Imperial College London, London, SW7 2AZ, UK
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Ayres CE, Jha BS, Sell SA, Bowlin GL, Simpson DG. Nanotechnology in the design of soft tissue scaffolds: innovations in structure and function. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2010; 2:20-34. [PMID: 20049828 DOI: 10.1002/wnan.55] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Engineered scaffolds function to supplement or replace injured, missing, or compromised tissue or organs. The current direction in this research area is to create scaffolds that mimic the structure and function of the native extracellular matrix (ECM). It is believed that the fabrication of a scaffold that has both structural integrity and allows for normal cellular function and interaction will bring scaffolds closer to clinical relevance. Nanotechnology innovations have aided in the development of techniques for the production of nanofiber scaffolds. The three major processing techniques, self-assembly, phase separation, and electrospinning, produce fibers that rival the size of those found in the native ECM. However, the simplicity, versatility, and scalability of electrospinning make it an attractive processing method that can be used to reproduce aspects of the complexity that characterizes the native ECM. Novel electrospinning strategies include alterations of scaffold composition and architecture, along with the addition and encapsulation of cells, pharmaceuticals and growth factors within the scaffold. This article reviews the major nanofiber fabrication technologies as well as delves into recent significant contributions to the conception of a meaningful and practical electrospun scaffold.
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Affiliation(s)
- Chantal E Ayres
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA 23284-3067, USA
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Structure-function relationships and source-to-ground distance in electrospun polycaprolactone. Acta Biomater 2009; 5:1552-61. [PMID: 19233754 DOI: 10.1016/j.actbio.2009.01.021] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2008] [Revised: 12/10/2008] [Accepted: 01/13/2009] [Indexed: 11/19/2022]
Abstract
The strength of electrospun scaffolds has direct relevance to their function within tissue engineering. We characterized the effects of source-to-ground distance on the mechanical properties of electrospun poly(epsilon-caprolactone) (PCL). Source-to-ground distances of 10, 15 and 20 cm, solids concentrations of 12 and 18 wt.% and mandrel rotation surface speeds of 0-12 m s(-1) were utilized. Tensile tests evaluated elastic modulus, tensile strength and elongation at failure. Scanning electron microscopy provided morphology and quantified fiber alignment. Increased source-to-ground distance yielded a microstructure allowing greater fiber rearrangement under load, tripling the observed tensile strength. Increases in rotational speed generally increased fiber alignment and strength at high but not low to moderate speeds. As fiber is quickly pulled out of a comparatively gentle falling process, collision with neighboring fibers moving at different speeds and in different directions can occur. The source-to-ground distance influences these collisions and thus has critical implications for microstructure and biocompatibility. In larger diameter (18 wt.% PCL), heavily point-bonded fibers (produced using a shorter, 10 cm source-to-ground distance), elongation at failure in the aligned direction increases dramatically due to severe localized necking. These specimens show only half of the tensile strength (from 2.6 to 4.5 MPa) and a dramatic increase (from 94% to 503%) in elongation at failure vs. a longer 20 cm source-to-ground distance. Strains of several hundred per cent are accompanied by periodic necking of large-diameter fibers in which microstructural failure appears to occur in a sequential manner involving an equilibrium between localized strain in the tensile direction and anisotropic point bonding that locally resists strain.
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Hadjiargyrou M, Chiu JB. Enhanced composite electrospun nanofiber scaffolds for use in drug delivery. Expert Opin Drug Deliv 2009; 5:1093-106. [PMID: 18817515 DOI: 10.1517/17425247.5.10.1093] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The utility of nanofibrous electrospun composite scaffolds has greatly expanded over the last decade, so that they now serve as viable drug delivery vehicles for a host of different biomedical applications. The material properties of electrospun scaffolds are extremely advantageous for drug delivery, in which site-specificity and lower overall medicinal dosages lead to a potential industry-altering mechanism of delivering therapeutics. Different drugs used to predominantly treat infections and cancers can easily be incorporated and released at therapeutic dosages. Further, the inherent high porosity of these electrospun scaffolds allows for a more precisely controlled degradation which is tunable by polymer composition and fiber morphology, leading to sustained drug release. This review examines the current research and breakthrough discoveries that have elevated electrospun scaffolds to a cutting-edge technology that will dramatically alter the landscape of drug delivery.
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Affiliation(s)
- Michael Hadjiargyrou
- Associate Professor Stony Brook University, Department of Biomedical Engineering, Stony Brook, NY 11794, USA.
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Arumuganathar S, Jayasinghe SN. Living scaffolds (specialized and unspecialized) for regenerative and therapeutic medicine. Biomacromolecules 2008; 9:759-66. [PMID: 18260632 DOI: 10.1021/bm701322k] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The physical sciences have increasingly demonstrated a significant influence on the life sciences. Engineering in particular has shown its input through the development of novel medical devices and processes having significance to the biomedical field. This review introduces and discusses several fiber generation protocols, which have recently undergone development and exploration for directly handling living cells from which continuous cell-bearing or living threads to scaffolds and membranes have been fabricated. In doing so these protocols have not only demonstrated their versatility but also opened several unique possibilities for the use of these scaffolds in a plethora of biological and medical applications. In particular, these living fibrous structural units could be explored for regeneration purposes, e.g., from accelerated wound healing to combating a wide range of pathologies when coupled with gene therapy. Thus, "living entities" such as these scaffolds could be most useful in surgery/medicine, including its exploration with stem cells for the preparation of unspecialized living scaffolds and membranes.
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Affiliation(s)
- Sumathy Arumuganathar
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom
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Jayasinghe SN. Advanced jet protocols for directly engineering living cells: a genesis to alternative biohandling approaches for the life sciences. Regen Med 2008; 3:49-61. [PMID: 18154462 DOI: 10.2217/17460751.3.1.49] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Processing methodologies possessing the ability to directly handle living cells imply tremendous possibilities for a whole host of applications in the regenerative and therapeutic medicinal themes of R&D. Most cell-handling techniques have, in the past, been unearthed in the physical sciences, which have subsequently undergone rapid development for a plethora of applications within the life sciences. In this review, the author wishes to introduce current and swiftly emerging direct cell-handling jet protocols whilst identifying their advantages and disadvantages in comparison to each approach. The article extends to elucidating their applicability for a few life science-based research themes, where these protocols are currently undergoing intense investigation. It is the opinion of this author that these protocols generate a range of opportunities for the life sciences, which have previously not been explored and hence could have an overwhelming affect in a biological and clinical standpoint. These methods and protocols have evidently bridged the physical with the life sciences during this endeavor.
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Affiliation(s)
- Suwan N Jayasinghe
- University College London, Department of Mechanical Engineering, Torrington Place, London WC1E 7JE UK.
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Arumuganathar S, Irvine S, McEwan JR, Jayasinghe SN. Pressure-assisted cell spinning: a direct protocol for spinning biologically viable cell-bearing fibres and scaffolds. Biomed Mater 2007; 2:211-9. [DOI: 10.1088/1748-6041/2/4/002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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