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Wang S, Wen X, Fan Z, Ding X, Wang Q, Liu Z, Yu W. Research advancements on nerve guide conduits for nerve injury repair. Rev Neurosci 2024; 35:627-637. [PMID: 38517315 DOI: 10.1515/revneuro-2023-0093] [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: 08/23/2023] [Accepted: 11/19/2023] [Indexed: 03/23/2024]
Abstract
Peripheral nerve injury (PNI) is one of the most serious causes of disability and loss of work capacity of younger individuals. Although PNS has a certain degree of regeneration, there are still challenges like disordered growth, neuroma formation, and incomplete regeneration. Regarding the management of PNI, conventional methods such as surgery, pharmacotherapy, and rehabilitative therapy. Treatment strategies vary depending on the severity of the injury. While for the long nerve defect, autologous nerve grafting is commonly recognized as the preferred surgical approach. Nevertheless, due to lack of donor sources, neurological deficits and the low regeneration efficiency of grafted nerves, nerve guide conduits (NGCs) are recognized as a future promising technology in recent years. This review provides a comprehensive overview of current treatments for PNI, and discusses NGCs from different perspectives, such as material, design, fabrication process, and composite function.
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Affiliation(s)
- Shoushuai Wang
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Xinggui Wen
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Zheyuan Fan
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Xiangdong Ding
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Qianqian Wang
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Zhongling Liu
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
| | - Wei Yu
- China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun City 130033, Jilin Province, China
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2
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Ahmed A, Khoso NA, Arain MF, Khan IA, Javed K, Khan A, Memon SI, Fan Q, Shao J. Development of Highly Flexible Piezoelectric PVDF-TRFE/Reduced Graphene Oxide Doped Electrospun Nano-Fibers for Self-Powered Pressure Sensor. Polymers (Basel) 2024; 16:1781. [PMID: 39000637 PMCID: PMC11244387 DOI: 10.3390/polym16131781] [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: 05/18/2024] [Revised: 06/10/2024] [Accepted: 06/20/2024] [Indexed: 07/17/2024] Open
Abstract
The demand for self-powered, flexible, and wearable electronic devices has been increasing in recent years for physiological and biomedical applications in real-time detection due to their higher flexibility and stretchability. This work fabricated a highly sensitive, self-powered wearable microdevice with Poly-Vinylidene Fluoride-Tetra Fluoroethylene (PVDF-TrFE) nano-fibers using an electrospinning technique. The dielectric response of the polymer was improved by incorporating the reduced-graphene-oxide (rGO) multi-walled carbon nano-tubes (MWCNTs) through doping. The dielectric behavior and piezoelectric effect were improved through the stretching and orientation of polymeric chains. The outermost layer was attained by chemical vapor deposition (CVD) of conductive polymer poly (3,4-ethylenedioxythiophene) to enhance the electrical conductivity and sensitivity. The hetero-structured nano-composite comprises PVDF-TrFE doped with rGO-MWCNTs over poly (3,4-ethylenedioxythiophene) (PEDOT), forming continuous self-assembly. The piezoelectric pressure sensor is capable of detecting human physiological vital signs. The pressure sensor exhibits a high-pressure sensitivity of 19.09 kPa-1, over a sensing range of 1.0 Pa to 25 kPa, and excellent cycling stability of 10,000 cycles. The study reveals that the piezoelectric pressure sensor has superior sensing performance and is capable of monitoring human vital signs, including heartbeat and wrist pulse, masticatory movement, voice recognition, and eye blinking signals. The research work demonstrates that the device could potentially eliminate metallic sensors and be used for early disease diagnosis in biomedical and personal healthcare applications.
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Affiliation(s)
- Arsalan Ahmed
- Department of Textiles and Clothing, School of Engineering and Technology, National Textile University Karachi Campus, Karachi 74900, Pakistan
- Engineering Research Centre for Eco-Dyeing and Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
- College of Materials & Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Nazakat Ali Khoso
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
- College of Materials & Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Department of Textile Engineering, Balochistan University of Information Technology, Engineering and Management Sciences (BUITEMS), Quetta 54000, Pakistan
| | - Muhammad Fahad Arain
- Department of Textiles and Clothing, School of Engineering and Technology, National Textile University Karachi Campus, Karachi 74900, Pakistan
- College of Materials & Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Imran Ahmad Khan
- Department of Textile and Apparel Science, School of Design and Textile, University of Management & Technology, Lahore 42000, Pakistan
| | - Kashif Javed
- Department of Textile and Apparel Science, School of Design and Textile, University of Management & Technology, Lahore 42000, Pakistan
| | - Asfandyar Khan
- Department of Textile and Apparel Science, School of Design and Textile, University of Management & Technology, Lahore 42000, Pakistan
- Department of Textile Engineering, Daffodil International University, Dhaka 1216, Bangladesh
| | - Sanam Irum Memon
- Textile Engineering Department, Mehran University of Engineering & Technology (MUET), Jamshoro 76062, Pakistan
| | - Qinguo Fan
- Department of Bioengineering, University of Massachusetts Dartmouth, North Dartmouth, MA 02747, USA
| | - Jianzhong Shao
- Engineering Research Centre for Eco-Dyeing and Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
- College of Materials & Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China
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3
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Su Q, Jiang Z, Li B. A mixed solvent approach to make poly(vinylidene fluoride) nanofibers with high β-phase using solution blow spinning. HIGH PERFORM POLYM 2020. [DOI: 10.1177/0954008320937338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The excellent mechanical and piezoelectric properties of poly(vinylidene fluoride) (PVDF) are its most valuable characteristics, and improving the piezoelectric performance of PVDF is an important subject of the study. However, several existing methodological studies have been regarded as complex and ineffective. The most efficient method to produce PVDF nanofibers with high β-phase contents is still electrospinning; however, this process does not facilitate the mass production of PVDF nanofibers and produces PVDF with a relatively low fraction of β-phase. Both these issues can be solved by solution blow spinning (SBS). This work focused on the optimum ratio of solvents to produce beadless PVDF nanofibers and highlighted the relationship between the spinning solution viscosity and the average diameter of the SBS nanofibers obtained. Using Fourier transform infrared reflection, it was evaluated that the fraction of the β-phase increased after the SBS process, which was calculated to be 85%; this value was considered as a relatively high fraction of β-phase, which was similar to that obtained by electrospinning. Consequently, a simple and convenient alternative to produce PVDF nanofibers with high β-phase contents was achieved.
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Affiliation(s)
- Qing Su
- Department of Material Science and Engineering, Tsinghua University, Shenzhen, China
| | - Zhenggen Jiang
- Department of Material Science and Engineering, Tsinghua University, Shenzhen, China
| | - Bo Li
- Department of Material Science and Engineering, Tsinghua University, Shenzhen, China
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4
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Wang M, Wang S, Hu J, Li H, Ren Z, Sun X, Wang H, Yan S. Taming the Phase Transition Ability of Poly(vinylidene fluoride) from α to γ′ Phase. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01106] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Mengyu Wang
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shaojuan Wang
- Key Laboratory of Rubber−Plastics Ministry of Education, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Jian Hu
- Key Laboratory of Rubber−Plastics Ministry of Education, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Huihui Li
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhongjie Ren
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaoli Sun
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Haijun Wang
- National Demonstration Center for Experimental Light Chemistry Engineering Education, Shanxi University of Science and Technology, Xi′an 710021, China
| | - Shouke Yan
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Rubber−Plastics Ministry of Education, Qingdao University of Science & Technology, Qingdao 266042, China
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5
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Pisani S, Genta I, Dorati R, Kavatzikidou P, Angelaki D, Manousaki A, Karali K, Ranella A, Stratakis E, Conti B. Biocompatible polymeric electrospun matrices: Micro–nanotopography effect on cell behavior. J Appl Polym Sci 2020. [DOI: 10.1002/app.49223] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Silvia Pisani
- Department of Drug SciencesUniversity of Pavia Pavia Italy
| | - Ida Genta
- Department of Drug SciencesUniversity of Pavia Pavia Italy
| | - Rossella Dorati
- Department of Drug SciencesUniversity of Pavia Pavia Italy
- Polymerix s.r.l., Parco Tecnico Scientifico, Via Taramelli 20 Pavia Italy
| | - Paraskevi Kavatzikidou
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Despoina Angelaki
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Aleka Manousaki
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Kanelina Karali
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
- Department of PhysicsUniversity of Crete Heraklion, Crete Greece
| | - Anthi Ranella
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Emmanuel Stratakis
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
- Department of PhysicsUniversity of Crete Heraklion, Crete Greece
| | - Bice Conti
- Department of Drug SciencesUniversity of Pavia Pavia Italy
- Polymerix s.r.l., Parco Tecnico Scientifico, Via Taramelli 20 Pavia Italy
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Vijayavenkataraman S. Nerve guide conduits for peripheral nerve injury repair: A review on design, materials and fabrication methods. Acta Biomater 2020; 106:54-69. [PMID: 32044456 DOI: 10.1016/j.actbio.2020.02.003] [Citation(s) in RCA: 237] [Impact Index Per Article: 59.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 02/04/2020] [Accepted: 02/04/2020] [Indexed: 12/19/2022]
Abstract
Peripheral nerves can sustain injuries due to loss of structure and/or function of peripheral nerves because of accident, trauma and other causes, which leads to partial or complete loss of sensory, motor, and autonomic functions and neuropathic pain. Even with the extensive knowledge on the pathophysiology and regeneration mechanisms of peripheral nerve injuries (PNI), reliable treatment methods that ensure full functional recovery are scant. Nerve autografting is the current gold standard for treatment of PNI. Given the limitations of autografts including donor site morbidity and limited supply, alternate treatment methods are being pursued by the researchers. Neural guide conduits (NGCs) are increasingly being considered as a potential alternative to nerve autografts. The anatomy of peripheral nerves, classification of PNI, and current treatment methods are briefly yet succinctly reviewed. A detailed review on the various designs of NGCs, the different materials used for making the NGCs, and the fabrication methods adopted is presented in this work. Much progress had been made in all the aspects of making an NGC, including the design, materials and fabrication techniques. The advent of advanced technologies such as additive manufacturing and 3D bioprinting could be beneficial in easing the production of patient-specific NGCs. NGCs with supporting cells or stem cells, NGCs loaded with neurotropic factors and drugs, and 4D printed NGCs are some of the futuristic areas of interest. STATEMENT OF SIGNIFICANCE: Neural guide conduits (NGCs) are increasingly being considered as a potential alternative to nerve autografts in the treatment of peripheral nerve injuries. A detailed review on the various designs of NGCs, the different materials used for making the NGCs, and the fabrication methods (including Additive Manufacturing) adopted is presented in this work.
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Affiliation(s)
- Sanjairaj Vijayavenkataraman
- Division of Engineering, New York University Abu Dhabi, UAE; Department of Mechanical and Aerospace Engineering, Tandon School of Engineering, New York University, NY, USA.
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7
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Hou Y, Wang X, Zhang Z, Luo J, Cai Z, Wang Y, Li Y. Repairing Transected Peripheral Nerve Using a Biomimetic Nerve Guidance Conduit Containing Intraluminal Sponge Fillers. Adv Healthc Mater 2019; 8:e1900913. [PMID: 31583854 DOI: 10.1002/adhm.201900913] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/11/2019] [Indexed: 12/29/2022]
Abstract
Nerve guide conduits (NGCs) with geometric design have shown significant advantages in guidance of nerve reinnervation across the defect of injured peripheral nerves. It is realized that intraluminal fillers with distinctive structure can effectively provide an inner guidance for sprouting of axons and improve the permeability of NGC. In this work, a poly(lactic-co-glycolic acid) (PLGA) NGC is prepared containing intraluminal sponge fillers (labeled as ISF-NGC) and used for reconstruction of a rat sciatic nerve with a 10 mm gap. For comparison, the same procedure is applied to a single hollow PLGA NGC (labeled as H-NGC) and an autologous nerve. As evidenced by significantly improved nerve morphology and function, the ISF-NGC achieves a superior nerve repair effect over H-NGC, which is comparable to autologous nerve grafting. It is likely that the H-NGC only provides a protected tunnel for nerve fiber regrowth and axonal extension, while ISF-NGC offers an extracellular matrix-mimetic architecture as autograft to provide contact guidance for nerve reinnervation. This newly developed ISF-NGC is a promising candidate to aid nerve reinnervation across longer gaps commonly encountered in clinical cases.
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Affiliation(s)
- Yuanjing Hou
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 China
- Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of Technology Wuhan 430070 China
| | - Xinyu Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 China
- Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of Technology Wuhan 430070 China
| | - Zongrui Zhang
- College of Biochemical EngineeringAnhui Polytechnic University Wuhu 241000 China
| | - Jing Luo
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 China
- Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of Technology Wuhan 430070 China
| | - Zhengwei Cai
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 China
- Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of Technology Wuhan 430070 China
| | - Yiyu Wang
- School of Life Science TechnologyHubei Engineering University Xiaogan 432000 China
| | - Yi Li
- Institute of Textiles and ClothingThe Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong 999077 China
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8
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Houshyar S, Bhattacharyya A, Shanks R. Peripheral Nerve Conduit: Materials and Structures. ACS Chem Neurosci 2019; 10:3349-3365. [PMID: 31273975 DOI: 10.1021/acschemneuro.9b00203] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Peripheral nerve injuries (PNIs) are the most common injury types to affect the nervous system. Restoration of nerve function after PNI is a challenging medical issue. Extended gaps in transected peripheral nerves are only repaired using autologous nerve grafting. This technique, however, in which nerve tissue is harvested from a donor site and grafted onto a recipient site in the same body, has many limitations and disadvantages. Recent studies have revealed artificial nerve conduits as a promising alternative technique to substitute autologous nerves. This Review summarizes different types of artificial nerve grafts used to repair peripheral nerve injuries. These include synthetic and natural polymers with biological factors. Then, desirable properties of nerve guides are discussed based on their functionality and effectiveness. In the final part of this Review, fabrication methods and commercially available nerve guides are described.
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Affiliation(s)
- Shadi Houshyar
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Amitava Bhattacharyya
- Nanoscience and Technology, Department of Electronics and Communication, PSG College of Technology, Coimbatore − 641004, India
| | - Robert Shanks
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia
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Zhang PX, Han N, Kou YH, Zhu QT, Liu XL, Quan DP, Chen JG, Jiang BG. Tissue engineering for the repair of peripheral nerve injury. Neural Regen Res 2019; 14:51-58. [PMID: 30531070 PMCID: PMC6263012 DOI: 10.4103/1673-5374.243701] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Peripheral nerve injury is a common clinical problem and affects the quality of life of patients. Traditional restoration methods are not satisfactory. Researchers increasingly focus on the field of tissue engineering. The three key points in establishing a tissue engineering material are the biological scaffold material, the seed cells and various growth factors. Understanding the type of nerve injury, the construction of scaffold and the process of repair are necessary to solve peripheral nerve injury and promote its regeneration. This review describes the categories of peripheral nerve injury, fundamental research of peripheral nervous tissue engineering and clinical research on peripheral nerve scaffold material, and paves a way for related research and the use of conduits in clinical practice.
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Affiliation(s)
| | - Na Han
- Peking University People's Hospital, Beijing, China
| | - Yu-Hui Kou
- Peking University People's Hospital, Beijing, China
| | - Qing-Tang Zhu
- The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xiao-Lin Liu
- The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Da-Ping Quan
- The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Jian-Guo Chen
- School of Life Science, Peking University, Beijing, China
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10
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Duffy P, McMahon S, Wang X, Keaveney S, O'Cearbhaill ED, Quintana I, Rodríguez FJ, Wang W. Synthetic bioresorbable poly-α-hydroxyesters as peripheral nerve guidance conduits; a review of material properties, design strategies and their efficacy to date. Biomater Sci 2019; 7:4912-4943. [DOI: 10.1039/c9bm00246d] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Implantable tubular devices known as nerve guidance conduits (NGCs) have drawn considerable interest as an alternative to autografting in the repair of peripheral nerve injuries.
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Affiliation(s)
- Patrick Duffy
- The Charles Institute of Dermatology
- School of Medicine
- University College Dublin
- Dublin
- Ireland
| | - Seán McMahon
- Ashland Specialties Ireland Ltd
- Synergy Centre
- Dublin
- Ireland
| | - Xi Wang
- The Charles Institute of Dermatology
- School of Medicine
- University College Dublin
- Dublin
- Ireland
| | - Shane Keaveney
- School of Mechanical & Materials Engineering
- UCD Centre for Biomedical Engineering
- UCD Conway Institute of Biomolecular and Biomedical Research
- University College Dublin
- Dublin
| | - Eoin D. O'Cearbhaill
- School of Mechanical & Materials Engineering
- UCD Centre for Biomedical Engineering
- UCD Conway Institute of Biomolecular and Biomedical Research
- University College Dublin
- Dublin
| | - Iban Quintana
- IK4-Tekniker
- Surface Engineering and Materials Science Unit
- Eibar
- Spain
| | | | - Wenxin Wang
- The Charles Institute of Dermatology
- School of Medicine
- University College Dublin
- Dublin
- Ireland
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Sarker M, Naghieh S, McInnes AD, Schreyer DJ, Chen X. Regeneration of peripheral nerves by nerve guidance conduits: Influence of design, biopolymers, cells, growth factors, and physical stimuli. Prog Neurobiol 2018; 171:125-150. [DOI: 10.1016/j.pneurobio.2018.07.002] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 07/24/2018] [Accepted: 07/26/2018] [Indexed: 01/10/2023]
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12
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Dos Santos FP, Peruch T, Katami SJV, Martini APR, Crestani TA, Quintiliano K, Maurmann N, Sanches EF, Netto CA, Pranke P, de Souza Pagnussat A. Poly (lactide-co-glycolide) (PLGA) Scaffold Induces Short-term Nerve Regeneration and Functional Recovery Following Sciatic Nerve Transection in Rats. Neuroscience 2018; 396:94-107. [PMID: 30452974 DOI: 10.1016/j.neuroscience.2018.11.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/06/2018] [Accepted: 11/08/2018] [Indexed: 01/27/2023]
Abstract
Peripheral nerve injury is an important cause of incapability and has limited available treatment. Autologous donor nerve implant is the golden standard treatment, however, may cause secondary deficits. Stem cells show positive results in preclinical settings, preserving tissue and function. We tested the efficacy of stem cells derived from human exfoliated deciduous teeth seeded in poly (lactide-co-glycolide) scaffolds in sciatic nerve transection model. Seventy-two adult male Wistar rats had 7-mm nerve gap bridge using scaffolds with (or without) stem cells. Animals were randomly divided into: sham-operated; sham-operated without scaffold; sham-operated + scaffold + stem cells; sciatic transection + no treatment; sciatic transection + acellular scaffolds; sciatic transection + scaffold + stem cells. Sciatic Functional Index and Ladder Rung Walking tests were performed before (-1), 14 and 28 days after surgery. Morphometric nerve measurement and muscle weights were assessed. Scaffolds with stem cells improved function in Sciatic Functional Index. Acellular scaffold was effective, promoting functional recovery and nerve regeneration following nerve injury. Scaffolds provide better nerve regeneration and functional recovery after sciatic transection. Despite cell therapy promoting faster recovery after sciatic transection in the Sciatic Index Score, stem cells did not improve functional and morphological recovery after nerve injury. This is the first study testing the potential use of scaffolds combined with stem cells in the early stages after injury. Scaffolds with stem cells could accelerate nerve recovery and favor adjuvant therapies, evidencing the need for further studies to increase the knowledge about stem cells' mechanisms.
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Affiliation(s)
- Franciele Pereira Dos Santos
- Post-graduation Program in Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Brazil
| | - Thais Peruch
- Department of Physical Therapy, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Brazil
| | | | - Ana Paula Rodrigues Martini
- Post-graduation Program in Neuroscience, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Thayane Antoniolli Crestani
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Post-graduation Program in Neuroscience, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Kerlin Quintiliano
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Post-graduation Program in Neuroscience, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Natasha Maurmann
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Post-graduation Program in Physiology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Eduardo Farias Sanches
- Department of Biochemistry, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Post-graduation Program in Neuroscience, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
| | - Carlos Alexandre Netto
- Department of Biochemistry, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Patricia Pranke
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Post-graduation Program in Physiology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Stem Cell Research Institute (SCRI), Porto Alegre, RS, Brazil
| | - Aline de Souza Pagnussat
- Post-graduation Program in Rehabilitation Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Brazil; Department of Physical Therapy, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Brazil; Post-graduation Program in Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Brazil
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13
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Yi S, Xu L, Gu X. Scaffolds for peripheral nerve repair and reconstruction. Exp Neurol 2018; 319:112761. [PMID: 29772248 DOI: 10.1016/j.expneurol.2018.05.016] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 05/05/2018] [Accepted: 05/13/2018] [Indexed: 12/22/2022]
Abstract
Trauma-associated peripheral nerve defect is a widespread clinical problem. Autologous nerve grafting, the current gold standard technique for the treatment of peripheral nerve injury, has many internal disadvantages. Emerging studies showed that tissue engineered nerve graft is an effective substitute to autologous nerves. Tissue engineered nerve graft is generally composed of neural scaffolds and incorporating cells and molecules. A variety of biomaterials have been used to construct neural scaffolds, the main component of tissue engineered nerve graft. Synthetic polymers (e.g. silicone, polyglycolic acid, and poly(lactic-co-glycolic acid)) and natural materials (e.g. chitosan, silk fibroin, and extracellular matrix components) are commonly used along or together to build neural scaffolds. Many other materials, including the extracellular matrix, glass fabrics, ceramics, and metallic materials, have also been used to construct neural scaffolds. These biomaterials are fabricated to create specific structures and surface features. Seeding supporting cells and/or incorporating neurotrophic factors to neural scaffolds further improve restoration effects. Preliminary studies demonstrate that clinical applications of these neural scaffolds achieve satisfactory functional recovery. Therefore, tissue engineered nerve graft provides a good alternative to autologous nerve graft and represents a promising frontier in neural tissue engineering.
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Affiliation(s)
- Sheng Yi
- Key laboratory of neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Lai Xu
- Key laboratory of neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China
| | - Xiaosong Gu
- Key laboratory of neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China.
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Gebrekrstos A, Madras G, Bose S. Piezoelectric Response in Electrospun Poly(vinylidene fluoride) Fibers Containing Fluoro-Doped Graphene Derivatives. ACS OMEGA 2018; 3:5317-5326. [PMID: 31458741 PMCID: PMC6641698 DOI: 10.1021/acsomega.8b00237] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 05/04/2018] [Indexed: 05/21/2023]
Abstract
Herein, graphene oxide (GO) was suitably functionalized to obtain carboxylated and fluorinated GO (GOCOOH and GOF) derivatives, respectively, via the Hunsdiecker reaction. Electrospun mats of poly(vinylidene fluoride) (PVDF)/GO, PVDF/GOCOOH, and PVDF/GOF fibers were then prepared by electrospinning from well-dispersed GO derivatives. The piezoelectric coefficient (d 33), as measured using piezoelectric force measurement (PFM), enhanced by more than 2 folds with respect to the control PVDF spun mat. The piezoelectric coefficient though enhanced upon the addition of GO and GOCOOH, however, enhanced significantly in the case of GOF. For instance, a drastic increase in piezoelectric response from 30 pm V-1(electrospun neat PVDF) to 63 pm V-1 (for electrospun PVDF/GOF) was observed as revealed from PFM results. The phase transformation in these fibers was systematically investigated by various techniques such as Fourier transform infrared spectroscopy (FTIR), wide angle X-ray diffraction (XRD), Raman spectroscopy, and PFM. FTIR and XRD results revealed that the electrospun fiber mats showed predominantly β-PVDF. Interestingly, the highest β content was obtained in the presence of GOF. The drastic enhancement in β phase is due to the presence of highly electronegative fluorine. The addition of GOCOOH and GOF in PVDF not only increases the polar β phase but also changes the piezoelectric response significantly. More interestingly, PVDF/GOF films exhibited higher energy density and dielectric permittivity when compared with the control PVDF samples. These findings will help guide the researchers working in this field from both theoretical understanding and practical view point for energy storing device and charge storage electronics.
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Affiliation(s)
- Amanuel Gebrekrstos
- Department
of Chemical Engineering and Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Giridhar Madras
- Department
of Chemical Engineering and Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Suryasarathi Bose
- Department
of Chemical Engineering and Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
- E-mail:
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Sangsanoh P, Ekapakul N, Israsena N, Suwantong O, Supaphol P. Enhancement of biocompatibility on aligned electrospun poly(3-hydroxybutyrate) scaffold immobilized with laminin towards murine neuroblastoma Neuro2a cell line and rat brain-derived neural stem cells (mNSCs). POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4313] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pakakrong Sangsanoh
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
| | - Natjaya Ekapakul
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
| | - Nipan Israsena
- Department of Pharmacology, Faculty of Medicine; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
| | - Orawan Suwantong
- Center of Chemical Innovation for Sustainability (CIS); Mae Fah Luang University; Tasud, Muang Chiang Rai 57100 Thailand
- School of Science; Mae Fah Luang University; Tasud, Muang Chiang Rai 57100 Thailand
| | - Pitt Supaphol
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
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Tandon B, Magaz A, Balint R, Blaker JJ, Cartmell SH. Electroactive biomaterials: Vehicles for controlled delivery of therapeutic agents for drug delivery and tissue regeneration. Adv Drug Deliv Rev 2018; 129:148-168. [PMID: 29262296 DOI: 10.1016/j.addr.2017.12.012] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/24/2017] [Accepted: 12/16/2017] [Indexed: 01/09/2023]
Abstract
Electrical stimulation for delivery of biochemical agents such as genes, proteins and RNA molecules amongst others, holds great potential for controlled therapeutic delivery and in promoting tissue regeneration. Electroactive biomaterials have the capability of delivering these agents in a localized, controlled, responsive and efficient manner. These systems have also been combined for the delivery of both physical and biochemical cues and can be programmed to achieve enhanced effects on healing by establishing control over the microenvironment. This review focuses on current state-of-the-art research in electroactive-based materials towards the delivery of drugs and other therapeutic signalling agents for wound care treatment. Future directions and current challenges for developing effective electroactive approach based therapies for wound care are discussed.
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Sangsanoh P, Israsena N, Suwantong O, Supaphol P. Effect of the surface topography and chemistry of poly(3-hydroxybutyrate) substrates on cellular behavior of the murine neuroblastoma Neuro2a cell line. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-1947-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hansen C, Dinis TM, Vidal G, Ben-Mansour K, Bresson D, Egles C, Marin F. In-vivo analysis of nerve regeneration after sciatic nerve injury in a rat model. Int Biomech 2016. [DOI: 10.1080/23335432.2016.1233077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Clint Hansen
- Sorbonne Universités, Université de Technologie de Compiègne (UTC), Compiègne, France
| | - Tony M. Dinis
- Sorbonne Universités, Université de Technologie de Compiègne (UTC), Compiègne, France
| | - Guillaume Vidal
- Sorbonne Universités, Université de Technologie de Compiègne (UTC), Compiègne, France
| | - Khalil Ben-Mansour
- Sorbonne Universités, Université de Technologie de Compiègne (UTC), Compiègne, France
| | - Damien Bresson
- Sorbonne Universités, Université de Technologie de Compiègne (UTC), Compiègne, France
| | - Christophe Egles
- Sorbonne Universités, Université de Technologie de Compiègne (UTC), Compiègne, France
- Department of Oral and Maxillofacial Pathology, School of Dental Medicine, Tufts University, Boston, MA, USA
| | - Frédéric Marin
- Sorbonne Universités, Université de Technologie de Compiègne (UTC), Compiègne, France
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Kabiri M, Oraee-Yazdani S, Shafiee A, Hanaee-Ahvaz H, Dodel M, Vaseei M, Soleimani M. Neuroregenerative effects of olfactory ensheathing cells transplanted in a multi-layered conductive nanofibrous conduit in peripheral nerve repair in rats. J Biomed Sci 2015; 22:35. [PMID: 25986461 PMCID: PMC4437686 DOI: 10.1186/s12929-015-0144-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 05/01/2015] [Indexed: 01/09/2023] Open
Abstract
Background The purpose of this study was to evaluate the efficacy of a multi-layered conductive nanofibrous hollow conduit in combination with olfactory ensheathing cells (OEC) to promote peripheral nerve regeneration. We aimed to harness both the topographical and electrical cues of the aligned conductive nanofibrous single-walled carbon nanotube/ poly (L-lactic acid) (SWCNT/PLLA) scaffolds along with the neurotrophic features of OEC in a nerve tissue engineered approach. Results We demonstrated that SWCNT/PLLA composite scaffolds support the adhesion, growth, survival and proliferation of OEC. Using microsurgical techniques, the tissue engineered nerve conduits were interposed into an 8 mm gap in sciatic nerve defects in rats. Functional recovery was evaluated using sciatic functional index (SFI) fortnightly after the surgery. Histological analyses including immunohistochemistry for S100 and NF markers along with toluidine blue staining (nerve thickness) and TEM imaging (myelin sheath thickness) of the sections from middle and distal parts of nerve grafts showed an increased regeneration in cell/scaffold group compared with cell-free scaffold and silicone groups. Neural regeneration in cell/scaffold group was very closely similar to autograft group, as deduced from SFI scores and histological assessments. Conclusions Our results indicated that the tissue engineered construct made of rolled sheet of SWCNT/PLLA nanofibrous scaffolds and OEC could promote axonal outgrowth and peripheral nerve regeneration suggesting them as a promising alternative in nerve tissue engineering.
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Affiliation(s)
- Mahboubeh Kabiri
- Department of Biotechnology, College of science, University of Tehran, Tehran, Iran. .,Department of Stem Cell Biology, Stem Cell Technology Research Center, Tehran, Iran. .,Department of Nanotechnology and Tissue Engineering, Stem Cell Technology Research Center, Tehran, Iran.
| | - Saeed Oraee-Yazdani
- Department of Stem Cell Biology, Stem Cell Technology Research Center, Tehran, Iran. .,Functional Neurosurgery Research Center, Department of Neurosurgery, Shohada Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Abbas Shafiee
- Department of Stem Cell Biology, Stem Cell Technology Research Center, Tehran, Iran. .,Experimental Dermatology Group, UQ Centre for Clinical Research, The University of Queensland, Herston, Queensland, Australia.
| | - Hana Hanaee-Ahvaz
- Department of Stem Cell Biology, Stem Cell Technology Research Center, Tehran, Iran.
| | - Masumeh Dodel
- Department of Nanotechnology and Tissue Engineering, Stem Cell Technology Research Center, Tehran, Iran. .,Department of Textile engineering, Amirkabir University of Technology, Tehran, Iran, Stem Cell Technology Research Center, Tehran, Iran.
| | - Mohammad Vaseei
- Pathology Department, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
| | - Masoud Soleimani
- Department of Hematology, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran.
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Dutta B, Kar E, Bose N, Mukherjee S. Significant enhancement of the electroactive β-phase of PVDF by incorporating hydrothermally synthesized copper oxide nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra21903e] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The influence of copper oxide nanoparticles on the polymorphism of PVDF is systematically investigated. Strong interfacial interactions between the negative nanoparticle surface and positive –CH2 dipoles of PVDF enhance the electroactive β-phase.
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Affiliation(s)
- Biplab Dutta
- Department of Physics
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
| | - Epsita Kar
- Department of Physics
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
| | - Navonil Bose
- Department of Physics
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
| | - Sampad Mukherjee
- Department of Physics
- Indian Institute of Engineering Science and Technology
- Howrah-711103
- India
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3D multi-channel bi-functionalized silk electrospun conduits for peripheral nerve regeneration. J Mech Behav Biomed Mater 2015; 41:43-55. [DOI: 10.1016/j.jmbbm.2014.09.029] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/25/2014] [Accepted: 09/30/2014] [Indexed: 12/21/2022]
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22
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The multiple silicone tube device, "tubes within a tube," for multiplication in nerve reconstruction. BIOMED RESEARCH INTERNATIONAL 2014; 2014:689127. [PMID: 24864255 PMCID: PMC4016851 DOI: 10.1155/2014/689127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 03/14/2014] [Indexed: 11/24/2022]
Abstract
Multiple nerve branches were created during the regeneration procedure after a nerve injury and such multiple branches are suggested to be used to control, for example, prosthesis with many degrees of freedom. Transected rat sciatic nerve stumps were inserted into a nine mm long silicone tube, which contained four, five mm long, smaller tubes, thus leaving a five mm gap for regenerating nerve fibers. Six weeks later, several new nerve structures were formed not only in the four smaller tubes, but also in the spaces in-between. The 7–9 new continuous nerve structures, which were isolated as individual free nerves after removal of the tubes, were delineated by a perineurium and contained both myelinated and unmyelinated nerve fibers as well as blood vessels. Stimulation of the proximal nerve elicited contractions in distal muscles. Thin metal electrodes, inserted initially into the smaller tubes in some experiments, became embedded in the new nerve structures and when stimulated contractions of the distal muscles were observed. The “tubes within a tube” technique, creating multiple new nerves from a single “mother” nerve, can be used to record multiple signals for prosthetic device control or as sources for supply of multiple denervated targets.
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24
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Beigi MH, Ghasemi-Mobarakeh L, Prabhakaran MP, Karbalaie K, Azadeh H, Ramakrishna S, Baharvand H, Nasr-Esfahani MH. In vivo integration of poly(ε-caprolactone)/gelatin nanofibrous nerve guide seeded with teeth derived stem cells for peripheral nerve regeneration. J Biomed Mater Res A 2014; 102:4554-67. [PMID: 24677613 DOI: 10.1002/jbm.a.35119] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/29/2014] [Accepted: 02/04/2014] [Indexed: 12/25/2022]
Abstract
Artificial nanofiber nerve guides have gained huge interest in bridging nerve gaps and associated peripheral nerve regeneration due to its high surface area, flexibility and porous structure. In this study, electrospun poly (ε-caprolactone)/gelatin (PCL/Gel) nanofibrous mats were fabricated, rolled around a copper wire and fixed by medical grade adhesive to obtain a tubular shaped bio-graft, to bridge 10 mm sciatic nerve gap in in vivo rat models. Stem cells from human exfoliated deciduous tooth (SHED) were transplanted to the site of nerve injury through the nanofibrous nerve guides. In vivo experiments were performed in animal models after creating a sciatic nerve gap, such that the nerve gap was grafted using (i) nanofiber nerve guide (ii) nanofiber nerve guide seeded with SHED (iii) suturing, while an untreated nerve gap remained as the negative control. In vitro cell culture study was carried out for primary investigation of SHED-nanofiber interaction and its viability within the nerve guides after 2 and 16 weeks of implantation time. Walking track analysis, plantar test, electrophysiology and immunohistochemistry were performed to evaluate functional recovery during nerve regeneration. Vascularization was also investigated by hematoxilin/eosine (H&E) staining. Overall results showed that the SHED seeded on nanofibrous nerve guide could survive and promote axonal regeneration in rat sciatic nerves, whereby the biocompatible PCL/Gel nerve guide with cells can support axonal regeneration and could be a promising tissue engineered graft for peripheral nerve regeneration.
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Affiliation(s)
- Mohammad-Hossein Beigi
- Department of Cellular Biotechnology at Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran; Materials Engineering Department, Najafabad Branch, Islamic Azad University, Najafabad, Iran
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25
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Tran RT, Choy WM, Cao H, Qattan I, Chiao JC, Ip WY, Yeung KWK, Yang J. Fabrication and characterization of biomimetic multichanneled crosslinked-urethane-doped polyester tissue engineered nerve guides. J Biomed Mater Res A 2013; 102:2793-804. [PMID: 24115502 DOI: 10.1002/jbm.a.34952] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 09/05/2013] [Accepted: 09/06/2013] [Indexed: 01/06/2023]
Abstract
Biomimetic scaffolds that replicate the native architecture and mechanical properties of target tissues have been recently shown to be a very promising strategy to guide cellular growth and facilitate tissue regeneration. In this study, porous, soft, and elastic crosslinked urethane-doped polyester (CUPE) tissue engineered nerve guides were fabricated with multiple longitudinally oriented channels and an external non-porous sheath to mimic the native endoneurial microtubular and epineurium structure, respectively. The fabrication technique described herein is highly adaptable and allows for fine control over the resulting nerve guide architecture in terms of channel number, channel diameter, porosity, and mechanical properties. Biomimetic multichanneled CUPE guides were fabricated with various channel numbers and displayed an ultimate peak stress of 1.38 ± 0.22 MPa with a corresponding elongation at break of 122.76 ± 42.17%, which were comparable to that of native nerve tissue. The CUPE nerve guides were also evaluated in vivo for the repair of a 1 cm rat sciatic nerve defect. Although histological evaluations revealed collapse of the inner structure from CUPE TENGs, the CUPE nerve guides displayed fiber populations and densities comparable with nerve autograft controls after 8 weeks of implantation. These studies are the first report of a CUPE-based biomimetic multichanneled nerve guide and warrant future studies towards optimization of the channel geometry for use in neural tissue engineering.
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Affiliation(s)
- Richard T Tran
- Department of Bioengineering, Materials Research Institute, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, 16802
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Ivirico JLE, Cruz DMG, Monrós MCA, Martínez-Ramos C, Pradas MM. Synthesis and properties of caprolactone and ethylene glycol copolymers for neural regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:1605-1617. [PMID: 22534765 DOI: 10.1007/s10856-012-4649-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 04/14/2012] [Indexed: 05/31/2023]
Abstract
Copolymer networks from poly(ethylene glycol) methacrylate (PEGMA) and caprolactone 2-(methacryloyloxy) ethyl ester were synthesized and the resulting structure of the copolymer network was characterized by differential scanning calorimetry, thermogravimetry, Fourier transform infrared spectroscopy, equilibrium water gain and dynamic mechanical analysis, results which were employed to conclude about the network structure of the resulting copolymers. The new material is a random copolymer with a good miscibility and increasing hydrophilicity as the PEGMA content increases in the composition. Physical data suggest an excess free volume and synergistic interactions between the lateral chains of both comonomers. Olfactory ensheathing cells were cultured on the different networks, and cell viability and proliferation were assessed by MTS assay. The copolymers with a 30 wt% of PEGMA showed the best results compared with the other compositions in this respect, indicating the relevance for biological performance of a balance of hydrophilic and hydrophobic functionalities in the polymer chain.
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Affiliation(s)
- Jorge Luis Escobar Ivirico
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022, Valencia, Spain.
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Lee YS, Collins G, Arinzeh TL. Neurite extension of primary neurons on electrospun piezoelectric scaffolds. Acta Biomater 2011; 7:3877-86. [PMID: 21810489 DOI: 10.1016/j.actbio.2011.07.013] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 06/30/2011] [Accepted: 07/07/2011] [Indexed: 01/09/2023]
Abstract
Neural tissue engineering may be a promising option for neural repair treatment, for which a well-designed scaffold is essential. Smart materials that can stimulate neurite extension and outgrowth have been investigated as potential scaffolding materials. A piezoelectric polymer polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) was used to fabricate electrospun aligned and random scaffolds having nano- or micron-sized fiber dimensions. The advantage of using a piezoelectric polymer is its intrinsic electrical properties. The piezoelectric characteristics of PVDF-TrFE scaffolds were shown to be enhanced by annealing. Dorsal root ganglion (DRG) neurons attached to all fibrous scaffolds. Neurites extended radially on random scaffolds, whereas aligned scaffolds directed neurite outgrowth for all fiber dimensions. Neurite extension was greatest on aligned, annealed PVDF-TrFE having micron-sized fiber dimensions in comparison with annealed and as-spun random PVDF-TrFE scaffolds. DRG on micron-sized aligned, as-spun and annealed PVDF-TrFE also had the lowest aspect ratio amongst all scaffolds, including non-piezoelectric PVDF and collagen-coated substrates. Findings from this study demonstrate the potential use of a piezoelectric fibrous scaffold for neural repair applications.
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Affiliation(s)
- Yee-Shuan Lee
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102-1982, USA
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Shen H, Shen ZL, Zhang PH, Chen NL, Wang YC, Zhang ZF, Jin YQ. Ciliary neurotrophic factor-coated polylactic-polyglycolic acid chitosan nerve conduit promotes peripheral nerve regeneration in canine tibial nerve defect repair. J Biomed Mater Res B Appl Biomater 2011; 95:161-70. [PMID: 20737557 DOI: 10.1002/jbm.b.31696] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A variety of nerve conduits incorporated with chemical and biological factors have been developed to further stimulate nerve regeneration. Although most of the nerve guides in studies are basically limited to bridge a short gap of nerve defect in rat models, it is vital to evaluate effects of conduits on nerve regeneration over distance greater than 20 mm, or more clinically relevant nerve gap lengths in higher mammals. In this study, a poly(lactide-co-glycolide) (PLGA) nerve conduit, treated with pulsed plasma and coated with ciliary neurotrophic factor (CNTF) as well as chitosan, was used to repair 25-mm-long canine tibial nerve defects in eighteen cross-bred dogs. The canines were randomly divided into three groups (n = 6), a 25-mm segment of the tibial nerve was removed and replaced by a PLGA/chitosan-CNTF nerve conduit, PLGA/chitosan conduit and autologous nerve grafts were performed as the control. The results were evaluated by general observation, electromyogram testing, S-100 histological immunostaining, and image analysis at 3 months after operation. The histological results demonstrated that the PLGA/chitosan-CNTF conduits and PLGA/chitosan conduits were capable of leading the damaged axons through the lesioned area. Through the comparison of the three groups, the results in PLGA/chitosan-CNTF conduits group were better than that of PLGA/chitosan conduits group, while they were similar to autologous nerve grafts group. Therefore, CNTF-coated PLGA/chitosan nerve conduits could be an alternative artificial nerve conduit for nerve regeneration.
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Affiliation(s)
- Hua Shen
- Department of Plastic Surgery, the First People's Hospital of Shanghai Medical College, Jiaotong University, Shanghai 200080, China
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29
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Gumera C, Rauck B, Wang Y. Materials for central nervous system regeneration: bioactive cues. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm04335d] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Li BC, Jiao SS, Xu C, You H, Chen JM. PLGA conduit seeded with olfactory ensheathing cells for bridging sciatic nerve defect of rats. J Biomed Mater Res A 2010; 94:769-80. [PMID: 20336740 DOI: 10.1002/jbm.a.32727] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PLGA is thought to be a promising material for nerve scaffold. OECs have been shown to promote axon outgrowth and myelination following peripheral nerve transection. This study assessed the compatibility between PLGA and OECs in vitro, and evaluated the effect of PLGA conduit filled with OECs and extracellular matrix gel (ECM) (POE group) on 10 mm-defect sciatic nerve of rats. Silicon-OECs-EMC (SOE group), PLGA-ECM (PE group), and silicon-ECM (SE group)-were used as the controls. The survival and distribution of OECs in vivo, neurohistology and neurofunction of the bridged nerve, were quantitatively evaluated from 1 week to 12 weeks after surgery. PLGA possessed complete compatibility with OECs. After implantation, OECs migrated along the axis of the nerve and survived longer in the POE group than in the SOE group. Gross recovery of the animal, like ulcerious and autophagical rate as well as relative diameter recovery rate of the fiber, was more successful in the POE group than in other groups. The number of the fiber in the middle and distal segments of bridged sites and neurons in anterior horn of the spinal cord was increased in both OECs-contained groups, but the diameter and the myeline thickness of the fiber were increased only in the POE group. The nerve conduction velocity and the amplitude of compound muscle active potential were improved much successfully in the PLGA-guided group than in the silicon-guided group, but the best improvement was encountered in the POE group. Sciatic function index was not improved in all groups at 12 weeks after surgery due to the injury model. These results suggested that PLGA filled with OECs is a significant alternative to conventional autograft in repairing peripheral nerve defects, and OECs are potential seed cells for peripheral nerve tissue engineering.
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Affiliation(s)
- Bing-Cang Li
- Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, China.
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Seil JT, Webster TJ. Electrically active nanomaterials as improved neural tissue regeneration scaffolds. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2010; 2:635-47. [DOI: 10.1002/wnan.109] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Justin T. Seil
- Laboratory for Nanomedicine Research, School of Engineering, Brown University, Providence, RI 02917, USA
| | - Thomas J. Webster
- Laboratory for Nanomedicine Research, School of Engineering, Brown University, Providence, RI 02917, USA
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Development of a scaffoldless three-dimensional engineered nerve using a nerve-fibroblast co-culture. In Vitro Cell Dev Biol Anim 2009; 46:438-44. [PMID: 19997868 DOI: 10.1007/s11626-009-9260-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Accepted: 10/23/2009] [Indexed: 10/20/2022]
Abstract
Nerve grafts are often required to replace tissue damaged by disease, surgery, or extensive trauma. Limitations such as graft availability, donor site morbidity, and immune rejection have led investigators to develop strategies to engineer nerve tissue. The goal of this study was to fabricate a scaffoldless three-dimensional (3D) nerve construct using a co-culture of fetal nerve cells with a fibroblast monolayer and allow the co-culture to remodel into a 3D construct with an external fibroblast layer and an internal core of interconnected neuronal cells. Primary fibroblasts were seeded on laminin-coated plates and allowed to form a confluent monolayer. Neural cells isolated from E-15 spinal cords were seeded on top of the fibroblast monolayer and allowed to form a networked monolayer across the monolayer of fibroblasts. Media shifts initiated contraction of the fibroblast monolayer and a remodeling of the co-culture into a 3D construct held statically in place by the two constraint pins. Immunohistochemistry using S100 (Schwann cell), beta3-tubulin, DAPI, and collagen I indicated an inner core of nerve cells surrounded by an external layer of fibroblasts. Conduction velocities of the 3D nerve and control (fibroblast-only) constructs were measured in vitro and compared to in vivo measures of neonatal sciatic nerve. The conduction velocities of the nerve constructs were comparable to 24-d-old neonatal nerve. The presence of Schwann cells and the ability to conduct neuronal signals in vitro suggest the scaffoldless 3D nerve constructs will be a viable option for nerve repair.
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Zhou L, Du HD, Tian HB, Li C, Tian J, Jiang JJ. Experimental study on repair of the facial nerve with Schwann cells transfected with GDNF genes and PLGA conduits. Acta Otolaryngol 2008; 128:1266-72. [PMID: 18607939 DOI: 10.1080/00016480801935517] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
CONCLUSIONS Schwann cells transfected by GDNF genes + PLGA were superior to Schwann cells + PLGA and direct anastomesis. This is a new and effective strategy for repair of facial nerve defects. OBJECTIVE To evaluate the effect of bioactive artificial nerve conduits in the repair of facial nerve defects in Sprague-Dawley rats. MATERIALS AND METHODS Schwann cells were harvested and transfected with PcDNA3.1 (+)/GDNF. After injection with Schwann cells, the conduits were cultured in the culture medium for 2 weeks. Thirty female Sprague-Dawley rats were selected and randomly divided into three groups (A, B, and C), which were treated as follows: A, direct anastomesis; B, Schwann cells + PLGA conduits; C, Schwann cells transfected by GDNF genes + PLGA conduits. General observation, electrophysiological study, histological study, and image analysis were performed 2 weeks, 1 month, 2 months, and 3 months postoperatively. RESULTS The recovery of nerve regeneration and electrophysiological results in group C were superior to those in groups A and B; the difference was statistically significant (p < 0.01).
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Degradation of covalently cross-linked carboxymethyl chitosan and its potential application for peripheral nerve regeneration. Eur Polym J 2007. [DOI: 10.1016/j.eurpolymj.2007.06.016] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Willerth SM, Sakiyama-Elbert SE. Approaches to neural tissue engineering using scaffolds for drug delivery. Adv Drug Deliv Rev 2007; 59:325-38. [PMID: 17482308 PMCID: PMC1976339 DOI: 10.1016/j.addr.2007.03.014] [Citation(s) in RCA: 214] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2006] [Accepted: 03/28/2007] [Indexed: 02/07/2023]
Abstract
This review seeks to give an overview of the current approaches to drug delivery from scaffolds for neural tissue engineering applications. The challenges presented by attempting to replicate the three types of nervous tissue (brain, spinal cord, and peripheral nerve) are summarized. Potential scaffold materials (both synthetic and natural) and target drugs are discussed with the benefits and drawbacks given. Finally, common methods of drug delivery, including degradable/diffusion-based delivery systems, affinity-based delivery systems, immobilized drug delivery systems, and electrically controlled drug delivery systems, are examined and critiqued. Based on the current body of work, suggestions for future directions of research in the field of neural tissue engineering are presented.
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Affiliation(s)
| | - Shelly E. Sakiyama-Elbert
- Department of Biomedical Engineering, Washington University in St. Louis
- Center for Materials Innovation, Washington University in St. Louis
- * To whom correspondence should be addressed: Shelly Sakiyama-Elbert, Department of Biomedical Engineering, Washington University, Campus Box 1097, One Brookings Drive, St. Louis, MO 63130,
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Sangsanoh P, Waleetorncheepsawat S, Suwantong O, Wutticharoenmongkol P, Weeranantanapan O, Chuenjitbuntaworn B, Cheepsunthorn P, Pavasant P, Supaphol P. In Vitro Biocompatibility of Schwann Cells on Surfaces of Biocompatible Polymeric Electrospun Fibrous and Solution-Cast Film Scaffolds. Biomacromolecules 2007; 8:1587-94. [PMID: 17429941 DOI: 10.1021/bm061152a] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The in vitro responses of Schwann cells (RT4-D6P2T, a schwannoma cell line derived from a chemically induced rat peripheral neurotumor) on various types of electrospun fibrous scaffolds of some commercially available biocompatible and biodegradable polymers, i.e., poly(3-hydroxybutyrate) (PHB), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), polycaprolactone (PCL), poly(l-lactic acid) (PLLA), and chitosan (CS), were reported in comparison with those of the cells on corresponding solution-cast film scaffolds as well as on a tissue-culture polystyrene plate (TCPS), used as the positive control. At 24 h after cell seeding, the viability of the attached cells on the various substrates could be ranked as follows: PCL film > TCPS > PCL fibrous > PLLA fibrous > PHBV film > CS fibrous approximately CS film approximately PLLA film > PHB film > PHBV fibrous > PHB fibrous. At day 3 of cell culture, the viability of the proliferated cells on the various substrates could be ranked as follows: TCPS > PHBV film > PLLA film > PCL film > PLLA fibrous > PHB film approximately PCL fibrous > CS fibrous > CS film > PHB fibrous > PHBV fibrous. At approximately 8 h after cell seeding, the cells on the flat surfaces of all of the film scaffolds and that of the PCL nanofibrous scaffold appeared in their characteristic spindle shape, while those on the surfaces of the PHB, PHBV, and PLLA macrofibrous scaffolds also appeared in their characteristic spindle shape, but with the cells being able to penetrate to the inner side of the scaffolds.
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Affiliation(s)
- Pakakrong Sangsanoh
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok 10330, Thailand
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Abstract
Driven by enormous clinical need, interest in peripheral nerve regeneration has become a prime focus of research and area of growth within the field of tissue engineering. While using autologous donor nerves for bridging peripheral defects remains today's gold standard, it remains associated with high donor site morbidity and lack of full recovery. This dictates research towards the development of biomimetic constructs as alternatives. Based on current concepts, this review summarizes various approaches including different extracellular matrices, scaffolds, and growth factors that have been shown to promote migration and proliferation of Schwann cells. Since neither of these concepts in isolation is enough, although each is gaining increased interest to promote nerve regeneration, various combinations will need to be identified to strike a harmonious balance. Additional factors that must be incorporated into tissue engineered nerve constructs are also unknown and warrant further research efforts. It seems that future directions may allow us to determine the "missing link".
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Affiliation(s)
- C T Chalfoun
- Aesthetic and Plastic Surgery Institute, University of California - Irvine, Orange, 92868, USA
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