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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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Ling J, He C, Zhang S, Zhao Y, Zhu M, Tang X, Li Q, Xu L, Yang Y. Progress in methods for evaluating Schwann cell myelination and axonal growth in peripheral nerve regeneration via scaffolds. Front Bioeng Biotechnol 2023; 11:1308761. [PMID: 38162183 PMCID: PMC10755477 DOI: 10.3389/fbioe.2023.1308761] [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: 10/09/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024] Open
Abstract
Peripheral nerve injury (PNI) is a neurological disorder caused by trauma that is frequently induced by accidents, war, and surgical complications, which is of global significance. The severity of the injury determines the potential for lifelong disability in patients. Artificial nerve scaffolds have been investigated as a powerful tool for promoting optimal regeneration of nerve defects. Over the past few decades, bionic scaffolds have been successfully developed to provide guidance and biological cues to facilitate Schwann cell myelination and orientated axonal growth. Numerous assessment techniques have been employed to investigate the therapeutic efficacy of nerve scaffolds in promoting the growth of Schwann cells and axons upon the bioactivities of distinct scaffolds, which have encouraged a greater understanding of the biological mechanisms involved in peripheral nerve development and regeneration. However, it is still difficult to compare the results from different labs due to the diversity of protocols and the availability of innovative technologies when evaluating the effectiveness of novel artificial scaffolds. Meanwhile, due to the complicated process of peripheral nerve regeneration, several evaluation methods are usually combined in studies on peripheral nerve repair. Herein, we have provided an overview of the evaluation methods used to study the outcomes of scaffold-based therapies for PNI in experimental animal models and especially focus on Schwann cell functions and axonal growth within the regenerated nerve.
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Affiliation(s)
- Jue Ling
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Chang He
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Shuxuan Zhang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Yahong Zhao
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Meifeng Zhu
- College of Life Sciences, Nankai University, Tianjin, China
| | - Xiaoxuan Tang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Qiaoyuan Li
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Liming Xu
- Institute of Medical Device Control, National Institutes for Food and Drug Control, Beijing, China
| | - Yumin Yang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
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3
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Ashna M, Senthilkumar N, Sanpui P. Human Hair Keratin-Based Hydrogels in Regenerative Medicine: Current Status and Future Directions. ACS Biomater Sci Eng 2023; 9:5527-5547. [PMID: 37734053 DOI: 10.1021/acsbiomaterials.3c00883] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
Regenerative medicine (RM) is a multidisciplinary field that utilizes the inherent regenerative potential of human cells to generate functionally and physiologically acceptable human cells, tissues, and organs in vivo or ex vivo. An appropriate biomaterial scaffold with desired physicochemical properties constitutes an important component of a successful RM approach. Among various forms of biomaterials explored until the present day, hydrogels have emerged as a versatile candidate for tissue engineering and regenerative medicine (TERM) applications such as scaffolds for spatial patterning and delivering therapeutic agents, or substrates to enhance cell growth, differentiation, and migration. Although hydrogels can be prepared from a variety of synthetic polymers as well as biopolymers, the latter are preferred for their inherent biocompatibility. Specifically, keratins are fibrous proteins that have been recently explored for constructing hydrogels useful for RM purposes. The present review discusses the suitability of keratin-based biomaterials in RM, with a particular focus on human hair keratin hydrogels and their use in various RM applications.
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Affiliation(s)
- Mymuna Ashna
- Department of Biotechnology, BITS Pilani Dubai Campus, Dubai International Academic City, Dubai, United Arab Emirates
| | - Neeharika Senthilkumar
- Department of Biotechnology, BITS Pilani Dubai Campus, Dubai International Academic City, Dubai, United Arab Emirates
| | - Pallab Sanpui
- Department of Biotechnology, BITS Pilani Dubai Campus, Dubai International Academic City, Dubai, United Arab Emirates
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4
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Wu S, Shen W, Ge X, Ao F, Zheng Y, Wang Y, Jia X, Mao Y, Luo Y. Advances in Large Gap Peripheral Nerve Injury Repair and Regeneration with Bridging Nerve Guidance Conduits. Macromol Biosci 2023; 23:e2300078. [PMID: 37235853 DOI: 10.1002/mabi.202300078] [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: 02/27/2023] [Revised: 05/10/2023] [Indexed: 05/28/2023]
Abstract
Peripheral nerve injury is a common complication of accidents and diseases. The traditional autologous nerve graft approach remains the gold standard for the treatment of nerve injuries. While sources of autologous nerve grafts are very limited and difficult to obtain. Nerve guidance conduits are widely used in the treatment of peripheral nerve injuries as an alternative to nerve autografts and allografts. However, the development of nerve conduits does not meet the needs of large gap peripheral nerve injury. Functional nerve conduits can provide a good microenvironment for axon elongation and myelin regeneration. Herein, the manufacturing methods and different design types of functional bridging nerve conduits for nerve conduits combined with electrical or magnetic stimulation and loaded with Schwann cells, etc., are summarized. It summarizes the literature and finds that the technical solutions of functional nerve conduits with electrical stimulation, magnetic stimulation and nerve conduits combined with Schwann cells can be used as effective strategies for bridging large gap nerve injury and provide an effective way for the study of large gap nerve injury repair. In addition, functional nerve conduits provide a new way to construct delivery systems for drugs and growth factors in vivo.
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Affiliation(s)
- Shang Wu
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Wen Shen
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Xuemei Ge
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Fen Ao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yan Zheng
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yigang Wang
- Department of Pharmacy, No. 215 Hospital of Shaanxi Nuclear Industry, Xianyang, Shaanxi, 712000, P. R. China
| | - Xiaoni Jia
- Central Laboratory, Xi'an Mental Health Center, Xi'an, 710061, P. R. China
| | - Yueyang Mao
- School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yali Luo
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
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5
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Liu X, Zou D, Hu Y, He Y, Lu J. Research Progress of Low-Intensity Pulsed Ultrasound in the Repair of Peripheral Nerve Injury. TISSUE ENGINEERING. PART B, REVIEWS 2023; 29:414-428. [PMID: 36785967 DOI: 10.1089/ten.teb.2022.0194] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Peripheral nerve injury (PNI) is a common disease that has profound impact on the health of patients, but has poor prognosis. The gold standard for the treatment of peripheral nerve defects is autologous nerve grafting; notwithstanding, due to the extremely high requirement for surgeons and medical facilities, there is great interest in developing better treatment strategies for PNI. Low-intensity pulsed ultrasound (LIPUS) is a noninterventional stimulation method characterized by low-intensity pulsed waves. It has good therapeutic effect on fractures, inflammation, soft tissue regeneration, and nerve regulation, and can participate in PNI repair from multiple perspectives. This review concentrates on the effects and mechanisms of LIPUS in the repair of PNI from the perspective of LIPUS stimulation of neural cells and stem cells, modulation of neurotrophic factors, signaling pathways, proinflammatory cytokines, and nerve-related molecules. In addition, the effects of LIPUS on nerve conduits are reviewed, as nerve conduits are expected to be a successful alternative treatment for PNI with the development of tissue engineering. Overall, the application advantages and prospects of LIPUS in the repair of PNI are highlighted by summarizing the effects of LIPUS on seed cells, neurotrophic factors, and nerve conduits for neural tissue engineering.
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Affiliation(s)
- Xuling Liu
- Department of Stomatology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Derong Zou
- Department of Stomatology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yinghan Hu
- Department of Stomatology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yushi He
- Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Jiayu Lu
- Department of Stomatology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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6
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Duan G, Li C, Yan X, Yang S, Wang S, Sun X, Zhao L, Song T, Pan Y, Wang X. Construction of a mineralized collagen nerve conduit for peripheral nerve injury repair. Regen Biomater 2022; 10:rbac089. [PMID: 36683739 PMCID: PMC9847629 DOI: 10.1093/rb/rbac089] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 10/12/2022] [Accepted: 10/26/2022] [Indexed: 01/19/2023] Open
Abstract
A new nerve guidance conduits (NGCs) named MC@Col containing Type I collagen (Col) and mineralized collagen (MC) was developed, enhancing mechanical and degradation behavior. The physicochemical properties, the mechanical properties and in vitro degradation behavior were all evaluated. The adhesion and proliferation of Schwann cells (SCs) were observed. In the in vivo experiment, MC@Col NGC and other conduits including Col, chitosan (CST) and polycaprolactone (PCL) conduit were implanted to repair a 10-mm-long Sprague-Dawley rat's sciatic nerve defect. Histological analyses, morphological analyses, electrophysiological analyses and further gait analyses were all evaluated after implantation in 12 weeks. The strength and degradation performance of the MC@Col NGC were improved by the addition of MC in comparison with pure Col NGC. In vitro cytocompatibility evaluation revealed that the SCs had good viability, attachment and proliferation in the MC@Col. In in vivo results, the regenerative outcomes of MC@Col NGC were close to those by an autologous nerve graft in some respects, but superior to those by Col, CST and PCL conduits. The MC@Col NGC exhibited good mechanical performance as well as biocompatibility to bridge nerve gap and guide nerve regeneration, thus showing great promising potential as a new type of conduit in clinical applications.
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Affiliation(s)
- Guman Duan
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China,Department of Orthopedics, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Chengli Li
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China,Department of Orthopedics, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Xiaoqing Yan
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China,Department of Orthopedics, Beijing Changping District Hospital, Beijing 102202, China
| | - Shuhui Yang
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Shuo Wang
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Xiaodan Sun
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Lingyun Zhao
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Tianxi Song
- Beijing Allgens Medical Science and Technology Co., Ltd, Beijing 100176, China
| | - Yongwei Pan
- Correspondence address. Tel: 86-10-62782966, E-mail: (X.W.); (Y.P.)
| | - Xiumei Wang
- Correspondence address. Tel: 86-10-62782966, E-mail: (X.W.); (Y.P.)
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7
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Jiang Y, Tang X, Li T, Ling J, Yang Y. The success of biomaterial-based tissue engineering strategies for peripheral nerve regeneration. Front Bioeng Biotechnol 2022; 10:1039777. [PMID: 36329703 PMCID: PMC9622790 DOI: 10.3389/fbioe.2022.1039777] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/04/2022] [Indexed: 11/26/2022] Open
Abstract
Peripheral nerve injury is a clinically common injury that causes sensory dysfunction and locomotor system degeneration, which seriously affects the quality of the patients’ daily life. Long gapped defects in large nerve are difficult to repair via surgery and limited donor source of autologous nerve greatly challenges the successful nerve repair by transplantation. Significantly, remarkable progress has been made in repairing the peripheral nerve injury using artificial nerve grafts and a variety of products for peripheral nerve repair have emerged been approved globally in recent years. The raw materials of these commercial products includes natural/synthetic polymers, extracellular matrix. Despite a lot of effort, the desirable functional recovery still remains great challenges in long gapped nerve defects. Thus this review discusses the recent development of tissue engineering products for peripheral nerve repair and the design of bionic grafts improving the local microenvironment for accelerating nerve regeneration against locomotor disorder, which may provide potential strategies for the repair of long gaps or thick nerve defects by multifunctional biomaterials.
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Affiliation(s)
- Yuhui Jiang
- Medical School of Nantong University, Nantong University, Nantong, China
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Xiaoxuan Tang
- Medical School of Nantong University, Nantong University, Nantong, China
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Tao Li
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Jue Ling
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
- *Correspondence: Jue Ling, ; Yumin Yang,
| | - Yumin Yang
- Medical School of Nantong University, Nantong University, Nantong, China
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
- *Correspondence: Jue Ling, ; Yumin Yang,
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Tang X, Li Q, Huang T, Zhang H, Chen X, Ling J, Yang Y. Regenerative Role of T Cells in Nerve Repair and Functional Recovery. Front Immunol 2022; 13:923152. [PMID: 35865551 PMCID: PMC9294345 DOI: 10.3389/fimmu.2022.923152] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 06/06/2022] [Indexed: 12/17/2022] Open
Abstract
The immune system is essential in the process of nerve repair after injury. Successful modulation of the immune response is regarded as an effective approach to improving treatment outcomes. T cells play an important role in the immune response of the nervous system, and their beneficial roles in promoting regeneration have been increasingly recognized. However, the diversity of T-cell subsets also delivers both neuroprotective and neurodegenerative functions. Therefore, this review mainly discusses the beneficial impact of T-cell subsets in the repair of both peripheral nervous system and central nervous system injuries and introduces studies on various therapies based on T-cell regulation. Further discoveries in T-cell mechanisms and multifunctional biomaterials will provide novel strategies for nerve regeneration.
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Affiliation(s)
- Xiaoxuan Tang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
- Medical School of Nantong University, Nantong University, Nantong, China
| | - Qiaoyuan Li
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Tingting Huang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Han Zhang
- Medical School of Nantong University, Nantong University, Nantong, China
| | - Xiaoli Chen
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
| | - Jue Ling
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
- *Correspondence: Jue Ling, ; Yumin Yang,
| | - Yumin Yang
- Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-Innovation Center of Neuroregeneration, Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong University, Nantong, China
- *Correspondence: Jue Ling, ; Yumin Yang,
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9
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Exploring the Impact of Chitosan Composites as Artificial Organs. Polymers (Basel) 2022; 14:polym14081587. [PMID: 35458335 PMCID: PMC9030266 DOI: 10.3390/polym14081587] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/24/2022] [Accepted: 04/07/2022] [Indexed: 02/04/2023] Open
Abstract
Chitosan and its allies have in multiple ways expanded into the medical, food, chemical, and biological industries and is still expanding. With its humble beginnings from marine shell wastes, the deacetylated form of chitin has come a long way in clinical practices. The biomedical applications of chitosan are truly a feather on its cap, with rarer aspects being chitosan’s role in tissue regeneration and artificial organs. Tissue regeneration is a highly advanced and sensitive biomedical application, and the very fact that chitosan is premiering here is an authentication of its ability to deliver. In this review, the various biomedical applications of chitosan are touched on briefly. The synthesis methodologies that are specific for tissue engineering and biomedical applications have been listed. What has been achieved using chitosan and chitosan composites in artificial organ research as well as tissue regeneration has been surveyed and presented. The lack of enthusiasm, as demonstrated by the very few reports online with respect to chitosan composites and artificial organs, is highlighted, and the reasons for this lapse speculated. What more needs be done to expand chitosan and its allies for a better utilization and exploitation to best benefit the construction of artificial organs and building of tissue analogs has been discussed.
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Chen F, Teniola OR, Laurencin CT. Biodegradable Polyphosphazenes for Regenerative Engineering. JOURNAL OF MATERIALS RESEARCH 2022; 37:1417-1428. [PMID: 36203785 PMCID: PMC9531846 DOI: 10.1557/s43578-022-00551-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/29/2022] [Indexed: 05/05/2023]
Abstract
Regenerative engineering is a field that seeks to regenerate complex tissues and biological systems, rather than simply restore and repair individual tissues or organs. Since the first introduction of regenerative engineering in 2012, numerous research has been devoted to the development of this field. Biodegradable polymers such as polyphosphazenes in particular have drawn significant interest as regenerative engineering materials for their synthetic flexibility in designing into materials with a wide range of mechanical properties, degradation rates, and chemical functionality. These polyphosphazenes can go through complete hydrolytic degradation and provide harmlessly and pH neutral buffering degradation products such as phosphates and ammonia, which is crucial for reducing inflammation in vivo. Here, we discuss the current accomplishments of polyphosphazene, different methods for synthesizing them, and their applications in tissue regeneration such as bones, nerves, and elastic tissues.
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Affiliation(s)
- Feiyang Chen
- Connecticut Convergence Institute for Translation in Regenerative Engineering, UConn Health, Farmington, Connecticut
| | - O R Teniola
- Connecticut Convergence Institute for Translation in Regenerative Engineering, UConn Health, Farmington, Connecticut
- Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut
| | - Cato T Laurencin
- Connecticut Convergence Institute for Translation in Regenerative Engineering, UConn Health, Farmington, Connecticut
- Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, UConn Health, Farmington, Connecticut
- Connecticut Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut
- Connecticut Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut
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11
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Li Y, Fraser D, Mereness J, Van Hove A, Basu S, Newman M, Benoit DSW. Tissue Engineered Neurovascularization Strategies for Craniofacial Tissue Regeneration. ACS APPLIED BIO MATERIALS 2022; 5:20-39. [PMID: 35014834 PMCID: PMC9016342 DOI: 10.1021/acsabm.1c00979] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Craniofacial tissue injuries, diseases, and defects, including those within bone, dental, and periodontal tissues and salivary glands, impact an estimated 1 billion patients globally. Craniofacial tissue dysfunction significantly reduces quality of life, and successful repair of damaged tissues remains a significant challenge. Blood vessels and nerves are colocalized within craniofacial tissues and act synergistically during tissue regeneration. Therefore, the success of craniofacial regenerative approaches is predicated on successful recruitment, regeneration, or integration of both vascularization and innervation. Tissue engineering strategies have been widely used to encourage vascularization and, more recently, to improve innervation through host tissue recruitment or prevascularization/innervation of engineered tissues. However, current scaffold designs and cell or growth factor delivery approaches often fail to synergistically coordinate both vascularization and innervation to orchestrate successful tissue regeneration. Additionally, tissue engineering approaches are typically investigated separately for vascularization and innervation. Since both tissues act in concert to improve craniofacial tissue regeneration outcomes, a revised approach for development of engineered materials is required. This review aims to provide an overview of neurovascularization in craniofacial tissues and strategies to target either process thus far. Finally, key design principles are described for engineering approaches that will support both vascularization and innervation for successful craniofacial tissue regeneration.
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Affiliation(s)
- Yiming Li
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - David Fraser
- Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States.,Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York 14620, United States.,Translational Biomedical Sciences Program, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Jared Mereness
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States.,Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Amy Van Hove
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Sayantani Basu
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Maureen Newman
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Danielle S W Benoit
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States.,Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York 14620, United States.,Translational Biomedical Sciences Program, University of Rochester Medical Center, Rochester, New York 14642, United States.,Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 14642, United States.,Materials Science Program, University of Rochester, Rochester, New York 14627, United States.,Department of Chemical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Biomedical Genetics and Center for Oral Biology, University of Rochester Medical Center, Rochester, New York 14642, United States
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12
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Effects of Adipose-Derived Mesenchymal Stem Cells and Human Amniotic Membrane on Sciatic Nerve Repair in Rats. ARCHIVES OF NEUROSCIENCE 2021. [DOI: 10.5812/ans.118661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Peripheral nerve injuries remain a great challenge for microsurgery despite the significant progress in recent decades. The current gold standard is autogenous nerve grafting with a success rate as low as 50% in long gaps. Current studies have focused on finding alternative methods for bridging nerve defects. Previous data have demonstrated the role of human amniotic membrane in stimulating neural regeneration. On the other hand, adipose-derived mesenchymal stem cells can differentiate into all three germ layers and could support nerve repair. The purpose of this study was to compare the role of the human amniotic membrane with and without adipose tissue stem cells in sciatic nerve injury with gap in rats. Objectives: We aimed to evaluate the effectiveness of the human amniotic membrane with and without adipose-derived mesenchymal stem cells in sciatic nerve injury with gap in rats. Methods: Twenty-four male Wistar rats in four random groups were used in our study. In the first group, the nerve gap was repaired using the inverse resected nerve segment (Control group), the second group was repaired with a human amniotic membrane (AM group), the third group was repaired with an amnion sheet with seeded adipose-derived mesenchymal stem cells (AM/ADMSCs group), and the last group was not repaired, and both stumps were sutured to muscles. Results: All the animals underwent the procedures and survived without complication. The sciatic function index and hot plate test results were significantly improved in the AM and AM/ADMSCs groups compared to the Control group (as a gold standard of care) (P>0.05). Based on histopathology findings, regenerative nerve fibers were seen in the implanted area of both AM and AM/ADMSCs groups; however, nerve fibers were surrounded by significant fibrosis (scar formation) in the AM/ADMSCs group. The axon count in the Control group was significantly higher than both experimental groups (P < 0.01). Conclusions: Our study showed the role of amniotic membrane in the promotion of nerve regeneration in sciatic nerve injury with a gap, but adding adipose-derived mesenchymal stem cells not only has no extra benefits, but also causes more tissue scar.
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13
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Leversedge FJ, Zoldos J, Nydick J, Kao DS, Thayer W, MacKay B, McKee D, Hoyen H, Safa B, Buncke GM. A Multicenter Matched Cohort Study of Processed Nerve Allograft and Conduit in Digital Nerve Reconstruction. J Hand Surg Am 2020; 45:1148-1156. [PMID: 33010972 DOI: 10.1016/j.jhsa.2020.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 05/26/2020] [Accepted: 07/27/2020] [Indexed: 02/02/2023]
Abstract
PURPOSE Biomaterials used to restore digital nerve continuity after injury associated with a defect may influence ultimate outcomes. An evaluation of matched cohorts undergoing digital nerve gap reconstruction was conducted to compare processed nerve allograft (PNA) and conduits. Based on scientific evidence and historical controls, we hypothesized that outcomes of PNA would be better than for conduit reconstruction. METHODS We identified matched cohorts based on patient characteristics, medical history, mechanism of injury, and time to repair for digital nerve injuries with gaps up to 25 mm. Data were stratified into 2 gap length groups: short gaps of 14 mm or less and long gaps of 15 to 25 mm. Meaningful sensory recovery was defined as a Medical Research Council scale of S3 or greater. Comparisons of meaningful recovery were made by repair method between and across the gap length groups. RESULTS Eight institutions contributed matched data sets for 110 subjects with 162 injuries. Outcomes data were available in 113 PNA and 49 conduit repairs. Meaningful recovery was reported in 61% of the conduit group, compared with 88% in the PNA group. In the group with a 14-mm or less gap, conduit and PNA outcomes were 67% and 92% meaningful recovery, respectively. In the 15- to 25-mm gap length group, conduit and PNA outcomes were 45% and 85% meaningful recovery, respectively. There were no reported adverse events in either treatment group. CONCLUSIONS Outcomes of digital nerve reconstruction in this study using PNA were consistent and significantly better than those of conduits across all groups. As gap lengths increased, the proportion of patients in the conduit group with meaningful recovery decreased. This study supports the use of PNA for nerve gap reconstruction in digital nerve reconstructions up to 25 mm. TYPE OF STUDY/LEVEL OF EVIDENCE Therapeutic III.
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Affiliation(s)
- Fraser J Leversedge
- Department of Orthopedic Surgery, University of Colorado, Aurora, CO; Department of Orthopaedic Surgery, Duke University, Durham, NC.
| | | | - Jason Nydick
- Florida Orthopaedic Institute, Temple Terrace, FL
| | - Dennis S Kao
- Division of Plastic Surgery, University of Washington, Seattle, WA
| | - Wesley Thayer
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN
| | - Brendan MacKay
- Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center, Lubbock, TX
| | - Desirae McKee
- Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center, Lubbock, TX
| | - Harry Hoyen
- Department of Orthopedic Surgery, MetroHealth System, Cleveland, OH
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14
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Jiménez-Gómez CP, Cecilia JA. Chitosan: A Natural Biopolymer with a Wide and Varied Range of Applications. Molecules 2020; 25:E3981. [PMID: 32882899 PMCID: PMC7504732 DOI: 10.3390/molecules25173981] [Citation(s) in RCA: 188] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 08/29/2020] [Accepted: 08/31/2020] [Indexed: 11/29/2022] Open
Abstract
Although chitin is of the most available biopolymers on Earth its uses and applications are limited due to its low solubility. The deacetylation of chitin leads to chitosan. This biopolymer, composed of randomly distributed β-(1-4)-linked D-units, has better physicochemical properties due to the facts that it is possible to dissolve this biopolymer under acidic conditions, it can adopt several conformations or structures and it can be functionalized with a wide range of functional groups to modulate its superficial composition to a specific application. Chitosan is considered a highly biocompatible biopolymer due to its biodegradability, bioadhesivity and bioactivity in such a way this biopolymer displays a wide range of applications. Thus, chitosan is a promising biopolymer for numerous applications in the biomedical field (skin, bone, tissue engineering, artificial kidneys, nerves, livers, wound healing). This biopolymer is also employed to trap both organic compounds and dyes or for the selective separation of binary mixtures. In addition, chitosan can also be used as catalyst or can be used as starting molecule to obtain high added value products. Considering these premises, this review is focused on the structure and modification of chitosan as well as its uses and applications.
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Affiliation(s)
| | - Juan Antonio Cecilia
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Malaga, Spain;
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15
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Application of electrospun polycaprolactone fibers embedding lignin nanoparticle for peripheral nerve regeneration: In vitro and in vivo study. Int J Biol Macromol 2020; 159:154-173. [PMID: 32416294 DOI: 10.1016/j.ijbiomac.2020.05.073] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 01/06/2023]
Abstract
Lignin displays attractive properties in peripheral nerve applications. Here, aligned polycaprolactone (PCL) fibers with various percentages of lignin nanoparticles were fabricated using the electrospinning method. The morphologies, contact angles, mechanical properties, in vitro degradation, and water uptake of the PCL/lignin fibers were characterized. Cell viability and adhesion of PC12 and human adipose-derived stem cells (hADSCs) were studied employing MTT assay and SEM, respectively. SEM, immunocytochemistry, and Real-Time PCR were utilized to characterize neural differentiation and neurite length of PC12 and hADSCs. To further study on lignin effect on nerve regeneration, in vivo studies were performed. The results indicated that all nanocomposite fibers were smooth and bead-free. With increasing the lignin content, the water contact angle decreased while in vitro degradation, water uptake, and Young's modulus increased compared to the PCL fibers. Cell viability, and differentiation along with neurite length extension were promoted by increasing lignin content. The neural markers expression for differentiated cells were upregulated by the increase of lignin percent. In vivo investigation also demonstrates that sample groups incorporating 15% lignin nanoparticles showed better regeneration among others. Therefore, PCL with 15% of lignin nanoparticles shows great potential to be applied for nerve regeneration.
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16
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Lischer M, di Summa PG, Oranges CM, Schaefer DJ, Kalbermatten DF, Guzman R, Madduri S. Human platelet lysate stimulated adipose stem cells exhibit strong neurotrophic potency for nerve tissue engineering applications. Regen Med 2020; 15:1399-1408. [PMID: 32308109 DOI: 10.2217/rme-2020-0031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Aim: We investigated a potential strategy involving human platelet lysate (HPL) as a media additive for enhancing the neurotrophic potency of human adipose stem cells (ASC). Materials & methods: Dorsal root ganglion explants, ASC and Schwann cells were used for in vitro axonal outgrowth experiments. Results: Remarkably, HPL-supplemented ASC promoted robust axonal outgrowth, in other words, four-times higher than fetal bovine serum-supplemented ASC and even matched to the level of Schwann cells. Further, analysis of regime of growth medium additive supplementation revealed the critical play of HPL in dorsal root ganglion and stem cells co-culture system for mounting effective axonal growth response. Conclusion: HPL supplementation significantly improved the neurotrophic potency of ASC as evidenced by the robust axonal outgrowth; these findings hold significance for nerve tissue engineering applications.
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Affiliation(s)
- Mirko Lischer
- Department of Plastic, Reconstructive, Aesthetic & Hand Surgery, University Hospital Basel, Spitalstrasse 21, 4031, Basel, Switzerland.,Department of Pathology, University Hospital Basel, Hebelstrasse 20, 4021, Basel, Switzerland.,Department of Biomedical Engineering, University of Basel, 4123, Allschwil, Basel, Switzerland
| | - Pietro G di Summa
- Department of Plastic & Hand Surgery, University Hospital Lausanne (CHUV), 1005, Lausanne, Switzerland
| | - Carlo M Oranges
- Department of Plastic, Reconstructive, Aesthetic & Hand Surgery, University Hospital Basel, Spitalstrasse 21, 4031, Basel, Switzerland
| | - Dirk J Schaefer
- Department of Plastic, Reconstructive, Aesthetic & Hand Surgery, University Hospital Basel, Spitalstrasse 21, 4031, Basel, Switzerland.,Department of Biomedicine, University of Basel, Hebelstrasse 20, 4021, Basel, Switzerland
| | - Daniel F Kalbermatten
- Department of Plastic, Reconstructive, Aesthetic & Hand Surgery, University Hospital Basel, Spitalstrasse 21, 4031, Basel, Switzerland.,Department of Pathology, University Hospital Basel, Hebelstrasse 20, 4021, Basel, Switzerland.,Department of Biomedical Engineering, University of Basel, 4123, Allschwil, Basel, Switzerland
| | - Raphael Guzman
- Department of Biomedicine, University of Basel, Hebelstrasse 20, 4021, Basel, Switzerland.,Department of Neurosurgery, University Hospital Basel, Spitalstrasse 21, 4031, Basel, Switzerland
| | - Srinivas Madduri
- Department of Plastic, Reconstructive, Aesthetic & Hand Surgery, University Hospital Basel, Spitalstrasse 21, 4031, Basel, Switzerland.,Department of Pathology, University Hospital Basel, Hebelstrasse 20, 4021, Basel, Switzerland.,Department of Biomedical Engineering, University of Basel, 4123, Allschwil, Basel, Switzerland.,Department of Biomedicine, University of Basel, Hebelstrasse 20, 4021, Basel, Switzerland
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17
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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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18
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Tao J, Zhang J, Du T, Xu X, Deng X, Chen S, Liu J, Chen Y, Liu X, Xiong M, Luo Y, Cheng H, Mao J, Cardon L, Gou M, Wei Y. Rapid 3D printing of functional nanoparticle-enhanced conduits for effective nerve repair. Acta Biomater 2019; 90:49-59. [PMID: 30930306 DOI: 10.1016/j.actbio.2019.03.047] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 03/20/2019] [Accepted: 03/21/2019] [Indexed: 02/06/2023]
Abstract
Nerve conduits provide an advanced tool for repairing the injured peripheral nerve that often causes disability and mortality. Currently, the efficiency of conduits in repairing peripheral nerve is unsatisfying. Here, we show a functional nanoparticle-enhanced nerve conduit for promoting the regeneration of peripheral nerves. This conduit, which consists of gelatin-methacryloyl (GelMA) hydrogels with drug loaded poly(ethylene glycol)- poly(3-caprolactone) (MPEG-PCL) nanoparticles dispersed in the hydrogel matrix, is rapidly fabricated by a continuous three-dimensional (3D) printing process. While the 3D-printed hydrogel conduit with customized size, shape and structure provides a physical microenvironment for axonal elongation, the nanoparticles sustained release the drug to facilitate the nerve regeneration. The drug, 4-((5,10-dimethyl-6-oxo-6,10-dihydro-5H-pyrimido[5,4-b]thieno[3,2-e][1,4]diazepin-2-yl)amino) benzenesulfonamide, is a Hippo pathway inhibitor with multiple functions including improving the proliferation and migration of Schwann cells and up-regulating neurotrophic factors genes. The descried functional nerve conduit efficiently induced the recovery of sciatic injuries in morphology, histopathology and functions in vivo, showing the potential clinical application in peripheral nerve repair. STATEMENTS OF SIGNIFICANCE: Functional nerve conduit provides a promising strategy alternative to autografts. In this work, we rapidly customized a nanoparticle-enhanced conduit by the continuous bioprinting process. This nanoparticle in the conduit can release a Hippo pathway inhibitor to facilitate the nerve regeneration and function restoration. The efficacy of the conduits is comparable to that of autograft, suggesting the potential clinical applications.
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Affiliation(s)
- Jie Tao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China; School of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Jiumeng Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China
| | - Ting Du
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China
| | - Xin Xu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China
| | - Xianming Deng
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Shaochen Chen
- NanoEngineering Department, University of California, San Diego, USA
| | - Jinlu Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China
| | - Yuwen Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China
| | - Xuan Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China
| | - Meimei Xiong
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China
| | - Yi Luo
- Department of Orthopedics, West China Hospital of Sichuan University, Wai Nan Guo Xue Xiang 37#, 610041 Chengdu, Sichuan, China
| | - Hao Cheng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China
| | - Jian Mao
- School of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Ludwig Cardon
- Center for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 915, Zwijnaarde, Ghent, Belgium
| | - Maling Gou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China.
| | - Yuquan Wei
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610065, China
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19
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Xu Y, Huang Z, Pu X, Yin G, Zhang J. Fabrication of Chitosan/Polypyrrole‐coated poly(L‐lactic acid)/Polycaprolactone aligned fibre films for enhancement of neural cell compatibility and neurite growth. Cell Prolif 2019; 52:e12588. [PMID: 30972893 PMCID: PMC6536449 DOI: 10.1111/cpr.12588] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/01/2018] [Accepted: 08/20/2018] [Indexed: 12/31/2022] Open
Abstract
Objective Methods Results Conclusions
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Affiliation(s)
- Yaxuan Xu
- College of Materials Science and Engineering Sichuan University Chengdu China
| | - Zhongbing Huang
- College of Materials Science and Engineering Sichuan University Chengdu China
| | - Ximing Pu
- College of Materials Science and Engineering Sichuan University Chengdu China
| | - Guangfu Yin
- College of Materials Science and Engineering Sichuan University Chengdu China
| | - Jiankai Zhang
- College of Materials Science and Engineering Sichuan University Chengdu China
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20
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Zhang L, Yang W, Xie H, Wang H, Wang J, Su Q, Li X, Song Y, Wang G, Wang L, Wang Z. Sericin Nerve Guidance Conduit Delivering Therapeutically Repurposed Clobetasol for Functional and Structural Regeneration of Transected Peripheral Nerves. ACS Biomater Sci Eng 2019; 5:1426-1439. [PMID: 33405618 DOI: 10.1021/acsbiomaterials.8b01297] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Peripheral nerve injury often causes significant function loss. Autologous nerve grafting as a gold-standard repair strategy for treating such an injury is limited by donor nerve supply. Tissue-engineered nerve guidance conduits (TENGCs) as a promising alternative for autografting are challenged by large nerve gaps. Herein, we fabricate a glutaraldehyde-cross-linked sericin nerve guidance conduit (GSC) incorporated with clobetasol, a glucocorticoid receptor agonist, for repairing a 10 mm long sciatic nerve gap in a rat model. The GSC exhibits biocompatibility and regeneration-favorable physicochemical properties. GSC's degradation products promote the secretion of neurotrophic factors in Schwann cells. By repurposing clobetasol for peripheral nerve regeneration, our work uncovers clobetasol's previously unknown functions in promoting Schwann cell proliferation and upregulating the expression of myelin-related genes. Importantly, the implantation of this clobetasol-loaded GSC in vivo leads to successful regeneration of the transected sciatic nerve. Strikingly, the regeneration outcome is functionally comparable to that of autologous nerve grafting (evidenced by three parameters). Specifically, the static sciatic index (SSI), relative reaction time (RRT) and nerve conduction velocity (NCV) in Clobetasol/GSC group are -74.55, 1.30, and 46.4 mm/s at Week 12, respectively, while these parameters are -64.53, 1.23, and 49.8 mm/s in Autograft group. Thus, this work represents the first report unveiling clobetasol's potential in peripheral nerve regeneration, reveals the feasibility of applying a sericin conduit for repairing a large nerve defect, and demonstrates the effectiveness of the clobetasol-loaded-GSC based strategy in transected nerves' regeneration.
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Affiliation(s)
- Lei Zhang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wen Yang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hongjian Xie
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hui Wang
- Department of Medical Genetics, Basic School of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jian Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Qiangfei Su
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiaolin Li
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yu Song
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Guobin Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lin Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.,Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.,Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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21
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Uehara M, Wei Min W, Satoh M, Shimizu F. Fascicular turnover flap in the reconstruction of facial nerve defects: an experimental study in rats. J Plast Surg Hand Surg 2019; 53:155-160. [DOI: 10.1080/2000656x.2018.1562458] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Miyuki Uehara
- Department of Plastic Surgery, Oita University Hospital, Oita, Japan
| | - Wu Wei Min
- Department of Plastic Surgery, Oita University Hospital, Oita, Japan
| | - Moriaki Satoh
- Department of Plastic Surgery, Oita University Hospital, Oita, Japan
| | - Fumiaki Shimizu
- Department of Plastic Surgery, Oita University Hospital, Oita, Japan
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22
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Mittal H, Ray SS, Kaith BS, Bhatia JK, Sukriti, Sharma J, Alhassan SM. Recent progress in the structural modification of chitosan for applications in diversified biomedical fields. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.10.013] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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23
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Marchesini A, Raimondo S, Zingaretti N, Riccio V, Battiston B, Provinciali M, Geuna S, Riccio M. The amnion muscle combined graft (AMCG) conduits in nerves repair: an anatomical and experimental study on a rat model. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:120. [PMID: 30032327 DOI: 10.1007/s10856-018-6126-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/07/2018] [Indexed: 06/08/2023]
Abstract
The amnion muscle combined graft (AMCG) conduits showed good clinical results in peripheral nerves gap repair. It combines the human amniotic membrane with autologous skeletal muscle fibres. These results seem attributable to the biological characteristics of human amniotic membrane: Pluripotency, anti-inflammatory and low immunogenicity.We here evaluate the final outcome of nerve regeneration morphologically and functionally, across the AMCG compared to nerve autograft. Fourteen Wistar rats were divided into two groups: In Group A, including 6 rats, the left forelimb was treated performing a 1.5 cm length gap on median nerve that was then reconstructed with a reverse autograft. In Group B, including 8 rats, the gap was reconstructed with AMCG. Functional results were evaluated at 30, 60 and 90 days performing grasping tests. Morphological and stereological analyses were performed at T90 using high-resolution light microscopy and design-based stereology. The AMCG conduits revealed nerve fibres regeneration and functional recovery. Functional recovery was observed in both groups with AMCG conduits group showing lower values and a regeneration of median nerves with more myelinated fibres with the same axon size, but thinner myelin than the autograft group. Though the autograft remains the gold standard to restore wide nerve gaps, the AMCG conduit has proved to be effective in enabling nerve regeneration through a critical rat's nerve gap of 15 mm. These findings empirically support the great clinical results obtained using AMCG conduit to restore traumatic nerve's gap from 3 to 6 cm of mixed forearm nerves.
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Affiliation(s)
- Andrea Marchesini
- Department of Reconstructive Plastic Surgery - Hand Surgery, Azienda Ospedaliero - Universitaria Ospedali Riuniti di Ancona, Ancona, (AN), Italy.
| | - Stefania Raimondo
- Department of Clinical and Biological Sciences, Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Orbassano, (TO), Italy
| | - Nicola Zingaretti
- Department of Plastic and Reconstructive Surgery, University of Udine, Ospedale "S. Maria della Misericordia", Udine, (UD), Italy
| | - Valentina Riccio
- Department of Veterinary Medicine, School of Veterinary Surgery, Ospedale Veterinario Didattico San Sollecito, University of Camerino, Matelica, Italy
| | - Bruno Battiston
- Department of Orthopedics and Traumatology - Hand surgery Unit, C.T.O. Hospital, Torino, (TO), Italy
| | - Mauro Provinciali
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS-INRCA, Experimental Animal Models for Aging Unit, Scientific Technological Area, IRCCS-INRCA, Via Birarelli 8, Ancona, 60121, Italy
| | - Stefano Geuna
- Department of Clinical and Biological Sciences, Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Orbassano, (TO), Italy
| | - Michele Riccio
- Department of Reconstructive Plastic Surgery - Hand Surgery, Azienda Ospedaliero - Universitaria Ospedali Riuniti di Ancona, Ancona, (AN), Italy
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Oatari M, Uehara M, Shimizu F. Evaluation of the effects of a polyglycolic acid-collagen tube in the regeneration of facial nerve defects in rats. Int J Artif Organs 2018; 41:664-669. [PMID: 29976126 DOI: 10.1177/0391398818783860] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
PURPOSE The purpose of this study was to assess the utility of a polyglycolic acid-collagen tube and to investigate its possible application in the field of facial nerve reconstruction. METHODS Wistar rats were used in this study. In the operation, a periauricular incision was made to expose the buccal and marginal branches of the facial nerve. Gaps of 10 mm were created by resection of a part of the nerve into the marginal branches and the buccal branch of the left facial nerve. The left marginal branch gap was bridged with a 10-mm polyglycolic acid-collagen tube or an autograft. At 12 weeks after the operation, nerve regeneration was assessed based on clinical, histopathological, and electrophysiological evaluations. RESULT The functional recovery of the vibrissal muscle was observed with the polyglycolic acid-collagen tube. However, the functional recovery obtained with the use of the polyglycolic acid-collagen tube was inferior to that obtained with an autograft. CONCLUSION We found that polyglycolic acid-collagen tubes could be applied in facial nerve gap reconstruction. However, further improvements will be necessary to achieve results that are equivalent to those obtained with autografts.
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Affiliation(s)
- Miwako Oatari
- Department of Plastic Surgery, Oita University Hospital, Oita, Japan
| | - Miyuki Uehara
- Department of Plastic Surgery, Oita University Hospital, Oita, Japan
| | - Fumiaki Shimizu
- Department of Plastic Surgery, Oita University Hospital, Oita, Japan
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25
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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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27
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28
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Rebowe R, Rogers A, Yang X, Kundu SC, Smith TL, Li Z. Nerve Repair with Nerve Conduits: Problems, Solutions, and Future Directions. J Hand Microsurg 2018; 10:61-65. [PMID: 30154617 DOI: 10.1055/s-0038-1626687] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 01/02/2018] [Indexed: 01/09/2023] Open
Abstract
Nerve conduits are becoming increasingly popular for the repair of peripheral nerve injuries. Their ease of application and lack of donor site morbidity make them an attractive option for nerve repair in many situations. Today, there are many different conduits to choose in different sizes and materials, giving the reconstructive surgeon many options for any given clinical problem. However, to properly utilize these unique reconstructive tools, the peripheral nerve surgeon must be familiar not only with their standard indications but also with their functional limitations. In this review, the authors identify the common applications of nerve conduits, expected results, and shortcomings of current techniques. Furthermore, future directions for nerve conduit use are identified.
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Affiliation(s)
- Ryan Rebowe
- Department of Orthopaedics, Wake Forest Baptist Medical Center, Winston Salem, North Carolina, United States
| | - Ashley Rogers
- Department of Orthopaedics, Wake Forest Baptist Medical Center, Winston Salem, North Carolina, United States
| | - Xuebin Yang
- Department of Oral Biology, University of Leeds, Leeds, United Kingdom
| | - S C Kundu
- Department of Biotechnology, Indian Institute of Technology, Kharagpur, West Bengal, India
| | - Thomas L Smith
- Department of Orthopaedics, Wake Forest Baptist Medical Center, Winston Salem, North Carolina, United States
| | - Zhongyu Li
- Department of Orthopaedics, Wake Forest Baptist Medical Center, Winston Salem, North Carolina, United States
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Galla TJ, Vedecnik SV, Halbgewachs J, Steinmann S, Friedrich C, Stark GB. Fibrin/Schwann Cell Matrix in Poly-Epsilon-Caprolactone Conduits Enhances Guided Nerve Regeneration. Int J Artif Organs 2018; 27:127-36. [PMID: 15068007 DOI: 10.1177/039139880402700208] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The goal of this study was to investigate if a three dimensional matrix, loaded homogeneously with Schwann cells and the neurotrophic factor LIF (leukemia inhibitory factor), enhances regeneration in a biodegradable nerve guidance channel as compared to non-structured cell suspensions. Therefore a 10 mm nerve gap in the buccal branch of the rat's facial nerve was bridged with tubular PCL (poly-epsilon-caprolactone) conduits filled with no matrix, Schwann cells, the three dimensional fibrin/Schwann cell matrix or the fibrin/Schwann cell matrix added with LIF. Four weeks after the nerve defects were bridged histological and morphometric analyses of the implants were performed. In conclusion, the three dimensional fibrin/Schwann cells matrix enhanced the quantity and the quality of peripheral nerve regeneration through PCL conduits. The application of LIF prevented hyperneurotization. Therefore, tissue engineered fibrin/Schwann cells matrices are new invented biocompatible and biodegradable devices for enhancing peripheral nerve regeneration as compared to non-structured cell suspensions without neurotrophic factors.
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Affiliation(s)
- T J Galla
- Department of Hand and Plastic Surgery, ValleyTEC, Albert-Ludwigs-University, Freiburg, Germany.
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30
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Ebrahimi M, Ai J, Biazar E, Ebrahimi-Barough S, Khojasteh A, Yazdankhah M, Sharifi S, Ai A, Heidari-Keshel S. In vivo assessment of a nanofibrous silk tube as nerve guide for sciatic nerve regeneration. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:394-401. [DOI: 10.1080/21691401.2018.1426593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Maryam Ebrahimi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Jafar Ai
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Esmaeil Biazar
- Department of Biomaterials Engineering, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Somayeh Ebrahimi-Barough
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Arash Khojasteh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Meysam Yazdankhah
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Siavash Sharifi
- Department of Veterinary Surgery and Radiology, Faculty of Veterinary Medicine, Sharekord University, Sharekord, Iran
| | - Arman Ai
- Medical Faculty, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Heidari-Keshel
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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31
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Pestana FM, Domingues RCC, Oliveira JT, Durço DFPA, Goulart CO, Mendonça HR, Dos Santos ACR, de Campos NT, da Silva BT, Pereira CC, Borges CP, Martinez AMB. Comparison of morphological and functional outcomes of mouse sciatic nerve repair with three biodegradable polymer conduits containing poly(lactic acid). Neural Regen Res 2018; 13:1811-1819. [PMID: 30136697 PMCID: PMC6128044 DOI: 10.4103/1673-5374.238712] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Poly(lactic acid) (PLA)-containing nerve guidance conduits (NGCs) are currently being investigated for nerve repair as an alternative to autograft, which leads to permanent functional impairment in the territory innervated by the removed nerve. Combination of polymers modifies the physical properties of the conduits, altering their nerve-guidance properties. Conduits made from PLA-only or combined with other polymers have been used successfully for nerve repair, but their efficiency has not been compared. We compared the morphological and functional outcomes of peripheral nerve repair by using NGCs made of poly(lactic acid) and combined or not with polycaprolactone (PLA/PCL) or polyvinylpyrrolidone (PLA/PVP). To assess the functional recovery, we employed a mechanical hyperalgesia analysis, sciatic functional index (SFI), and electroneuromyography. The mechanical hyperalgesia analysis showed that the PLA group improved more rapidly than the PLA/PVP and PLA/PCL groups; similarly, in the electroneuromyography assay, the PLA group exhibited higher amplitude than the PLA/PCL and PLA/PVP groups. However, the SFI improvement rates did not differ among the groups. Morphologically, the PLA group showed more vascularization, while the nerve fiber regeneration did not differ among the groups. In conclusion, the PLA-only conduits were superior to the other NGCs tested for nerve repair.
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Affiliation(s)
- Fernanda Marques Pestana
- Pós Graduação em Ciências Morfológicas, Instituto de Ciências Biomédicas-UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | | | - Júlia Teixeira Oliveira
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Daniela F P A Durço
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Camila Oliveira Goulart
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Henrique Rocha Mendonça
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ; Polo Universitário de Macaé, Laboratório Integrado de Produtos Bioativos e Biociências, Macaé, UFRJ, Brazil
| | - Anne Caroline Rodrigues Dos Santos
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Natália Tavares de Campos
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | - Beatriz Theodoro da Silva
- Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
| | | | | | - Ana Maria Blanco Martinez
- Pós Graduação em Ciências Morfológicas, Instituto de Ciências Biomédicas-UFRJ; Anatomia Patológica - Faculdade de Medicina - HUCFF -UFRJ; Laboratório de Neurodegeneração e Reparo - Faculdade de Medicina - HUCFF-UFRJ, Rio de Janeiro, RJ, Brazil
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Huang CW, Huang WC, Qiu X, Fernandes Ferreira da Silva F, Wang A, Patel S, Nesti LJ, Poo MM, Li S. The Differentiation Stage of Transplanted Stem Cells Modulates Nerve Regeneration. Sci Rep 2017; 7:17401. [PMID: 29234013 PMCID: PMC5727226 DOI: 10.1038/s41598-017-17043-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 11/17/2017] [Indexed: 11/18/2022] Open
Abstract
In regenerative medicine applications, the differentiation stage of implanted stem cells must be optimized to control cell fate and enhance therapeutic efficacy. We investigated the therapeutic potential of human induced pluripotent stem cell (iPSC)-derived cells at two differentiation stages on peripheral nerve regeneration. Neural crest stem cells (NCSCs) and Schwann cells (NCSC-SCs) derived from iPSCs were used to construct a tissue-engineered nerve conduit that was applied to bridge injured nerves in a rat sciatic nerve transection model. Upon nerve conduit implantation, the NCSC group showed significantly higher electrophysiological recovery at 1 month as well as better gastrocnemius muscle recovery at 5 months than the acellular group, but the NCSC-SC group didn’t. Both transplanted NCSCs and NCSC-SCs interacted with newly-growing host axons, while NCSCs showed better survival rate and distribution. The transplanted NCSCs mainly differentiated into Schwann cells with no teratoma formation, and they secreted higher concentrations of brain-derived neurotrophic factor and nerve growth factor than NCSC-SCs. In conclusion, transplantation of iPSC-NCSCs accelerated functional nerve recovery with the involvement of stem cell differentiation and paracrine signaling. This study unravels the in vivo performance of stem cells during tissue regeneration, and provides a rationale of using appropriate stem cells for regenerative medicine.
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Affiliation(s)
- Ching-Wen Huang
- Department of Bioengineering, University of California, Berkeley, California, 94720, USA
| | - Wen-Chin Huang
- Department of Bioengineering, University of California, Berkeley, California, 94720, USA.,UC Berkeley-UCSF Graduate Program in Bioengineering, Berkeley, California, 94720, USA
| | - Xuefeng Qiu
- Department of Bioengineering, University of California, Berkeley, California, 94720, USA.,Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | | | - Aijun Wang
- Department of Surgery, University of California, Davis, School of Medicine, Sacramento, California, 95817, USA
| | - Shyam Patel
- Department of Bioengineering, University of California, Berkeley, California, 94720, USA
| | - Leon J Nesti
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland, 20814, USA.,Clinical and Experimental Orthopaedics, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, 20892, USA.,Department of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, Maryland, 20889, USA
| | - Mu-Ming Poo
- Department of Molecular and Cell Biology, University of California, Berkeley, California, 94720, USA
| | - Song Li
- Department of Bioengineering, University of California, Berkeley, California, 94720, USA. .,Department of Bioengineering, University of California, Los Angeles, California, 90095, USA. .,Department of Medicine, University of California, Los Angeles, California, 90095, USA.
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33
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Shahriari D, Shibayama M, Lynam DA, Wolf KJ, Kubota G, Koffler JY, Tuszynski MH, Campana WM, Sakamoto JS. Peripheral nerve growth within a hydrogel microchannel scaffold supported by a kink-resistant conduit. J Biomed Mater Res A 2017; 105:3392-3399. [PMID: 28804998 DOI: 10.1002/jbm.a.36186] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 06/30/2017] [Accepted: 08/07/2017] [Indexed: 01/04/2023]
Abstract
Nerve repair in several mm-long nerve gaps often requires an interventional technology. Microchannel scaffolds have proven effective for bridging nerve gaps and guiding axons in the peripheral nervous system (PNS). Nonetheless, fabricating microchannel scaffolds at this length scale remains a challenge and/or is time consuming and cumbersome. In this work, a simple computer-aided microdrilling technique was used to fabricate 10 mm-long agarose scaffolds consisting of 300 µm-microchannels and 85 µm-thick walls in less than an hour. The agarose scaffolds alone, however, did not exhibit adequate stiffness and integrity to withstand the mechanical stresses during implantation and suturing. To provide mechanical support and enable suturing, poly caprolactone (PCL) conduits were fabricated and agarose scaffolds were placed inside. A modified salt-leaching technique was developed to introduce interconnected porosity in PCL conduits to allow for tuning of the mechanical properties such as elastic modulus and strain to failure. It was shown that the PCL conduits were effective in stabilizing the agarose scaffolds in 10 mm-long sciatic nerve gaps of rats for at least 8 weeks. Robust axon ingress and Schwann cell penetration were observed within the microchannel scaffolds without using growth factors. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 3392-3399, 2017.
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Affiliation(s)
- Dena Shahriari
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan
| | - Masataka Shibayama
- Department of Anesthesiology, University of California San Diego, La Jolla, California.,Program in Neuroscience, University of California San Diego, La Jolla, California
| | - Daniel A Lynam
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan
| | - Kayle J Wolf
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan
| | - Go Kubota
- Department of Anesthesiology, University of California San Diego, La Jolla, California.,Program in Neuroscience, University of California San Diego, La Jolla, California
| | - Jacob Y Koffler
- Department of Neuroscience, University of California San Diego, La Jolla, Califronia
| | - Mark H Tuszynski
- Department of Neuroscience, University of California San Diego, La Jolla, Califronia.,Veterans Administration Medical Center, La Jolla, California
| | - Wendy M Campana
- Department of Anesthesiology, University of California San Diego, La Jolla, California.,Program in Neuroscience, University of California San Diego, La Jolla, California
| | - Jeff S Sakamoto
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan
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Oh SH, Kang JG, Kim TH, Namgung U, Song KS, Jeon BH, Lee JH. Enhanced peripheral nerve regeneration through asymmetrically porous nerve guide conduit with nerve growth factor gradient. J Biomed Mater Res A 2017; 106:52-64. [DOI: 10.1002/jbm.a.36216] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 08/27/2017] [Accepted: 08/30/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Se Heang Oh
- Department of Nanobiomedical Science; Dankook University; Cheonan 31116 Republic of Korea
- Department of Pharmaceutical Engineering; Dankook University; Cheonan 31116 Republic of Korea
| | - Jun Goo Kang
- Department of Advanced Materials and Chemical Engineering; Hannam University; Daejeon 34054 Republic of Korea
| | - Tae Ho Kim
- Department of Advanced Materials and Chemical Engineering; Hannam University; Daejeon 34054 Republic of Korea
| | - Uk Namgung
- Department of Oriental Medicine; Daejeon University; Daejeon 34520 Republic of Korea
| | - Kyu Sang Song
- Department of Pathology, School of Medicine; Chungnam National University; Daejeon 35015 Republic of Korea
| | - Byeong Hwa Jeon
- Department of Physiology, School of Medicine; Chungnam National University; Daejeon 35015 Republic of Korea
| | - Jin Ho Lee
- Department of Advanced Materials and Chemical Engineering; Hannam University; Daejeon 34054 Republic of Korea
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Nune M, Subramanian A, Krishnan UM, Kaimal SS, Sethuraman S. Self-assembling peptide nanostructures on aligned poly(lactide-co-glycolide) nanofibers for the functional regeneration of sciatic nerve. Nanomedicine (Lond) 2017; 12:219-235. [DOI: 10.2217/nnm-2016-0323] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Regeneration of functional peripheral nerve tissue at critical-sized defect requires extracellular matrix analogs impregnated with appropriate biosignals to regulate the cell fate process and subsequent tissue progression. The aim of the study was to develop electrospun aligned nanofibers as architectural analogs integrated with RADA16-I-BMHP1 as biofunctional peptides. Materials & methods: Aligned poly(lactide-co-glycolide) (PLGA)-RADA16-I-BMHP1 nanofibers were fabricated and characterized for their in vitro potential using rat Schwann cell line and in vivo potential using a 10 mm sciatic nerve transection rat model. Results: PLGA-peptide scaffolds significantly promoted higher expression of genotypic markers and bipolar extension of Schwann cells. Further, PLGA-peptide treated animals promoted the native collagen organization, remyelination and showed significantly higher recovery of sensorimotor and motor function than PLGA-treated groups (p < 0.05). Conclusion: Our results demonstrate that self-assembling peptide nanostructures on aligned PLGA nanofibers provided better cell–matrix communication with significant functional restoration of the sciatic nerve.
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Affiliation(s)
- Manasa Nune
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613401, Tamil Nadu, India
| | - Anuradha Subramanian
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613401, Tamil Nadu, India
| | - Uma Maheswari Krishnan
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613401, Tamil Nadu, India
| | - Suraj Sasidhara Kaimal
- Veterinary dispensary - Paliyode, Department of Animal Husbandry, Government of Kerala, Trivandrum - 695124, Kerala, India
| | - Swaminathan Sethuraman
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613401, Tamil Nadu, India
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Jang CH, Lee H, Kim M, Kim G. Effect of polycaprolactone/collagen/hUCS microfiber nerve conduit on facial nerve regeneration. Int J Biol Macromol 2016; 93:1575-1582. [DOI: 10.1016/j.ijbiomac.2016.04.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 04/08/2016] [Accepted: 04/12/2016] [Indexed: 12/11/2022]
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Mingyu C, Kai G, Jiamou L, Yandao G, Nanming Z, Xiufang Z. Surface Modification and Characterization of Chitosan Film Blended with Poly-L-Lysine. J Biomater Appl 2016; 19:59-75. [PMID: 15245644 DOI: 10.1177/0885328204043450] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Biodegradable nerve guidance conduits (NGCs) represent a promising alternative to current clinical nerve repair procedures. Chitosan, a natural polysaccharide that has excellent biocompatibility and biodegradability, can be used as a nerve conduit material. The purpose of this work was to study the nerve cell affinity of chitosan modified by blending with different content of poly-L-lysine. PC12 cells culture was used to evaluate the nerve cell affinity of the chitosan-poly-L-lysine composite materials. The results showed that composite materials had significantly improved nerve cell affinity compared to chitosan as indicated by increased attachment, differentiation, and growth of nerve cells. The improved nerve cell affinity might be due to both the increased surface charge and hydrophilicity of composite materials. Composite material with 3 wt% poly-L-lysine content (PL-3) is an even better material in nerve cell affinity than collagen, suggesting that poly-L-lysine-blended chitosan is a promising candidate material for nerve regeneration.
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Affiliation(s)
- Cheng Mingyu
- Department of Biological Sciences and Biotechnology, State Key Laboratory of Biomembrane and Membrane Biotechnology, Tsinghua University, Beijing 100084, China
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Dresner HS, King TA, Clark HB, Juhn SK, Levine SC. Peripheral Facial Nerve Regeneration Using Collagen Conduit Entubulation in a Cat Model. Ann Otol Rhinol Laryngol 2016; 115:631-42. [PMID: 16944663 DOI: 10.1177/000348940611500810] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objectives: Facial nerve (FN) injuries are functionally, psychologically, and financially debilitating. Facial nerve autograft repairs produce significant donor nerve morbidity and functional results that rarely exceed House-Brackmann (HB) grade III over VI. In this study we sought to enhance FN regeneration via collagen conduit entubulation. Methods: Five control cats underwent right (“cut-side”) FN transection and immediate microsurgical anastomosis repair. Five experimental cats underwent identical repairs plus collagen conduit entubulation of each anastomosis. Results: Postoperative behavioral observations revealed gradual FN functional recovery in all cats, who attained adapted HB grades of II to III over VI after 6 weeks. Electromyographic latencies and amplitudes from the bilateral orbicularis oculi and orbicularis oris muscles indicated restoration of FN continuity in all 10 cats. In comparison with FN repairs without conduits, repairs with conduits significantly enhanced recovery of amplitude in cut-side orbicularis oculi muscles (p = .037) and latency in cut-side orbicularis oris muscles (p = .048). In comparison with intact left (“uncut-side”) FN latencies and amplitudes, more statistically significant differences in cut-side FN function were observed in repairs without conduits than in repairs with conduits. Conduits therefore facilitated a more complete return of electrophysiological function. Histologic analyses confirmed FN continuity and revealed more organized FN regenerative architecture in conduit-implanted repairs. Conclusions: The overall results support enhanced FN regeneration with collagen conduit entubulation.
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Affiliation(s)
- Harley S Dresner
- Department of Otolaryngology, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Oprych KM, Whitby RLD, Mikhalovsky SV, Tomlins P, Adu J. Repairing Peripheral Nerves: Is there a Role for Carbon Nanotubes? Adv Healthc Mater 2016; 5:1253-71. [PMID: 27027923 DOI: 10.1002/adhm.201500864] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 01/10/2016] [Indexed: 12/16/2022]
Abstract
Peripheral nerve injury continues to be a major global health problem that can result in debilitating neurological deficits and neuropathic pain. Current state-of-the-art treatment involves reforming the damaged nerve pathway using a nerve autograft. Engineered nerve repair conduits can provide an alternative to the nerve autograft avoiding the inevitable tissue damage caused at the graft donor site. Commercially available nerve repair conduits are currently only considered suitable for repairing small nerve lesions; the design and performance of engineered conduits requires significant improvements to enable their use for repairing larger nerve defects. Carbon nanotubes (CNTs) are an emerging novel material for biomedical applications currently being developed for a range of therapeutic technologies including scaffolds for engineering and interfacing with neurological tissues. CNTs possess a unique set of physicochemical properties that could be useful within nerve repair conduits. This progress report aims to evaluate and consolidate the current literature pertinent to CNTs as a biomaterial for supporting peripheral nerve regeneration. The report is presented in the context of the state-of-the-art in nerve repair conduit design; outlining how CNTs may enhance the performance of next generation peripheral nerve repair conduits.
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Affiliation(s)
- Karen M. Oprych
- Department of Brain, Repair and Rehabilitation; Institute of Neurology; University College London; Queen Square London WC1N 3BG UK
| | | | - Sergey V. Mikhalovsky
- School of Engineering; Nazarbayev University; Astana 010000 Kazakhstan
- School of Pharmacy and Biomolecular Sciences; University of Brighton; Brighton BN2 4GJ UK
| | | | - Jimi Adu
- School of Pharmacy and Biomolecular Science; University of Brighton; Brighton BN2 4GJ UK
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Noreen A, Zia KM, Zuber M, Ali M, Mujahid M. A critical review of algal biomass: A versatile platform of bio-based polyesters from renewable resources. Int J Biol Macromol 2016; 86:937-49. [DOI: 10.1016/j.ijbiomac.2016.01.067] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 01/09/2016] [Accepted: 01/19/2016] [Indexed: 10/22/2022]
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Zilic L, Wilshaw SP, Haycock JW. Decellularisation and histological characterisation of porcine peripheral nerves. Biotechnol Bioeng 2016; 113:2041-53. [PMID: 26926914 PMCID: PMC5103209 DOI: 10.1002/bit.25964] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 01/27/2016] [Accepted: 02/21/2016] [Indexed: 12/18/2022]
Abstract
Peripheral nerve injuries affect a large proportion of the global population, often causing significant morbidity and loss of function. Current treatment strategies include the use of implantable nerve guide conduits (NGC's) to direct regenerating axons between the proximal and distal ends of the nerve gap. However, NGC's are limited in their effectiveness at promoting regeneration Current NGCs are not suitable as substrates for supporting either neuronal or Schwann cell growth, as they lack an architecture similar to that of the native extracellular matrix (ECM) of the nerve. The aim of this study was to create an acellular porcine peripheral nerve using a novel decellularisation protocol, in order to eliminate the immunogenic cellular components of the tissue, while preserving the three‐dimensional histoarchitecture and ECM components. Porcine peripheral nerve (sciatic branches were decellularised using a low concentration (0.1%; w/v) sodium dodecyl sulphate in conjunction with hypotonic buffers and protease inhibitors, and then sterilised using 0.1% (v/v) peracetic acid. Quantitative and qualitative analysis revealed a ≥95% (w/w) reduction in DNA content as well as preservation of the nerve fascicles and connective tissue. Acellular nerves were shown to have retained key ECM components such as collagen, laminin and fibronectin. Slow strain rate to failure testing demonstrated the biomechanical properties of acellular nerves to be comparable to fresh controls. In conclusion, we report the production of a biocompatible, biomechanically functional acellular scaffold, which may have use in peripheral nerve repair. Biotechnol. Bioeng. 2016;113: 2041–2053. © 2016 The Authors. Biotechnology and Bioengineering published by Wiley Periodicals, Inc.
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Affiliation(s)
- Leyla Zilic
- Faculty of Biological Sciences, School of Biomedical Sciences, University of Leeds, LS2 9JT United Kingdom.,Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, LS2 9JT United Kingdom.,Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Broad Lane, Sheffield, S3 7HQ United Kingdom
| | - Stacy-Paul Wilshaw
- Faculty of Biological Sciences, School of Biomedical Sciences, University of Leeds, LS2 9JT United Kingdom. .,Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, LS2 9JT United Kingdom.
| | - John W Haycock
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Broad Lane, Sheffield, S3 7HQ United Kingdom.
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Ameri Bafghi R, Biazar E. Development of oriented nanofibrous silk guide for repair of nerve defects. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2015.1074907] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gao Y, Wang YL, Kong D, Qu B, Su XJ, Li H, Pi HY. Nerve autografts and tissue-engineered materials for the repair of peripheral nerve injuries: a 5-year bibliometric analysis. Neural Regen Res 2015. [PMID: 26199621 PMCID: PMC4498331 DOI: 10.4103/1673-5374.158369] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
With advances in biomedical methods, tissue-engineered materials have developed rapidly as an alternative to nerve autografts for the repair of peripheral nerve injuries. However, the materials selected for use in the repair of peripheral nerve injuries, in particular multiple injuries and large-gap defects, must be chosen carefully. Various methods and materials for protecting the healthy tissue and repairing peripheral nerve injuries have been described, and each method or material has advantages and disadvantages. Recently, a large amount of research has been focused on tissue-engineered materials for the repair of peripheral nerve injuries. Using the keywords “pe-ripheral nerve injury”, “autotransplant”, “nerve graft”, and “biomaterial”, we retrieved publications using tissue-engineered materials for the repair of peripheral nerve injuries appearing in the Web of Science from 2010 to 2014. The country with the most total publications was the USA. The institutions that were the most productive in this field include Hannover Medical School (Germany), Washington University (USA), and Nantong University (China). The total number of publications using tissue-engineered materials for the repair of peripheral nerve injuries grad-ually increased over time, as did the number of Chinese publications, suggesting that China has made many scientific contributions to this field of research.
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Affiliation(s)
- Yuan Gao
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Yu-Ling Wang
- Department of Nursing, Chinese PLA General Hospital, Beijing, China
| | - Dan Kong
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Bo Qu
- Clinic Division, Department of Surgery, Chinese PLA General Hospital, Beijing, China
| | - Xiao-Jing Su
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Huan Li
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Hong-Ying Pi
- Department of Nursing, Chinese PLA General Hospital, Beijing, China
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Rat sciatic nerve reconstruction across a 30 mm defect bridged by an oriented porous PHBV tube with Schwann cell as artificial nerve graft. ASAIO J 2014; 60:224-33. [PMID: 24399063 PMCID: PMC3942346 DOI: 10.1097/mat.0000000000000044] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
An oriented poly(3-hydroxybutyrate-co-3-hydroxyvalerate) nerve conduit has been used to evaluate its efficiency based on the promotion of peripheral nerve regeneration in rats. The oriented porous micropatterned artificial nerve conduit was designed onto the micropatterned silicon wafers, and then their surfaces were modified with oxygen plasma to increase cell adhesion. The designed conduits were investigated by cell culture analyses with Schwann cells (SCs). The conduits were implanted into a 30 mm gap in sciatic nerves of rats. Four months after surgery, the regenerated nerves were monitored and evaluated by macroscopic assessments and histology and behavioral analyses. Results of cellular analyses showed suitable properties of designed conduit for nerve regeneration. The results demonstrated that in the polymeric graft with SCs, the rat sciatic nerve trunk had been reconstructed with restoration of nerve continuity and formatted nerve fibers with myelination. Histological results demonstrated the presence of Schwann and glial cells in regenerated nerves. Functional recovery such as walking, swimming, and recovery of nociceptive function was illustrated for all the grafts especially conduits with SCs. This study proves the feasibility of the artificial nerve graft filled with SCs for peripheral nerve regeneration by bridging a longer defect in an animal model.
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Xing D, Ma L, Gao C. Synthesis of poly(ester-carbonate) with a pendant acetylcholine analog for promoting neurite growth. Acta Biomater 2014; 10:4127-35. [PMID: 24998182 DOI: 10.1016/j.actbio.2014.06.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Revised: 06/16/2014] [Accepted: 06/23/2014] [Indexed: 01/08/2023]
Abstract
The modification of biodegradable polyesters with bioactive molecules has become an important strategy for controlling neuron adhesion and neurite outgrowth in nerve regeneration. In this study we report a biodegradable poly(ester-carbonate) with a pendant acetylcholine analog, which a neurotransmitter for the enhancement of neuron adhesion and outgrowth. The acetylcholine-functionalized poly(ester-carbonate) (Ach-P(LA-ClTMC)) was prepared by copolymerizing l-lactide (LA) and 5-methyl-5-chloroethoxycarbonyl trimethylene carbonate (ClTMC), followed by quaternization with trimethylamine. The acetylcholine analog content could be modulated by changing the molar feeding fraction of ClTMC. The incorporation of the acetylcholine analog improved the hydrophilicity of the films, but the acetylcholine analog content did not significantly influence the surface morphology of the acetylcholine-functionalized films. The results of PC12 cell culture showed that the acetylcholine analog promoted cell viability and neurite outgrowth in a concentration-dependent manner. The longest length of neurite and the percentage of cells bearing neurites were obtained on the Ach-P(LA-ClTMC)-10 film. All the results indicate that the integration of the acetylcholine analog at an appropriate fraction could be an effective strategy for optimizing the existing biodegradable polyesters for nerve regeneration applications.
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Affiliation(s)
- Dongming Xing
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Lie Ma
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
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Jiang J, Wan F, Yang J, Hao W, Wang Y, Yao J, Shao Z, Zhang P, Chen J, Zhou L, Chen S. Enhancement of osseointegration of polyethylene terephthalate artificial ligament by coating of silk fibroin and depositing of hydroxyapatite. Int J Nanomedicine 2014; 9:4569-80. [PMID: 25302023 PMCID: PMC4189703 DOI: 10.2147/ijn.s69137] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background Application of artificial ligament in anterior cruciate ligament reconstruction is one of the research focuses of sports medicine but the biological tendon–bone healing still remains a problem. The preliminary study of hydroxyapatite (HAP) coating on the polyethylene terephthalate (PET) surface could effectively induce the osteoblast differentiation, but the tendon–bone healing was still not stable. As a green synthesis process, the biomimetic mineralization can simulate the natural bone growth in vitro and in vivo. Methods HAP crystals were grown under the guide of silk fibroin (SF) PET surface by biomimetic route. Several techniques including scanning electron microscopy, attenuated total reflectance Fourier transform infrared spectroscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy were utilized for proving the introduction of both SF and HAP. The viability and osseointegration of bone marrow stromal cells on the surface of three kinds of ligament, including PET group (non-coating group), PET+SF group (SF-coating group), and PET+SF+HAP group (combined HAP- and SF-coating group), were analyzed by CCK-8 assays and alkaline phosphatase (ALP) detection. Seventy-two mature male New Zealand rabbits were randomly divided into three groups. Among them, 36 rabbits were sacrificed for mechanical testing, and histological examination for the others. Results The SF and SF+HAP were successfully coated on the surface of PET fiber. The CCK-8 assay showed that the cell proliferation on PET+SF+HAP group was better than the other two groups from 24 to 120 hours. After 14 days of culture, the cells in the PET+SF+HAP group delivered higher levels of ALP than the other two groups. After 3 days of culture, the expression level of integrin β1 in the PET+SF+HAP group and PET+SF group were higher than in the PET group. The mean load to failure and the stiffness value of the PET+SF+HAP group were both higher than the other two groups. Hematoxylin and eosin staining showed that new bone tissue formation was only found in the PET+SF+HAP group 8 weeks postoperatively. Masson staining showed that in the PET+SF+HAP group 8 weeks postoperatively, the PET fibers were almost completely encircled by collagen. Histomorphometric analysis showed that the width of the graft–bone interface in the PET+SF+HAP group was narrower than that in the other two groups 4 and 8 weeks postoperatively. The mRNA level of BMP-7 in the PET+SF+HAP groups was significantly higher than those in the other two groups 4 and 8 weeks postoperatively. Conclusion The study showed that the combined SF and HAP coating by biomimetic route on the surface of PET artificial ligament could induce graft osseointegration in the bone tunnel, providing theoretical and experimental foundation for manufacturing novel artificial ligaments meeting the clinical needs.
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Affiliation(s)
- Jia Jiang
- Fudan University Sports Medicine Center and Department of Sports Medicine and Arthroscopy Surgery, Huashan Hospital, Fudan University, Shanghai, People's Republic of China ; State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, People's Republic of China
| | - Fang Wan
- Fudan University Sports Medicine Center and Department of Sports Medicine and Arthroscopy Surgery, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Jianjun Yang
- Fudan University Sports Medicine Center and Department of Sports Medicine and Arthroscopy Surgery, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Wei Hao
- Laboratory of Advanced Materials, National Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, People's Republic of China
| | - Yaxian Wang
- Laboratory of Advanced Materials, National Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, People's Republic of China
| | - Jinrong Yao
- Laboratory of Advanced Materials, National Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, People's Republic of China
| | - Zhengzhong Shao
- Laboratory of Advanced Materials, National Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, People's Republic of China
| | - Peng Zhang
- Fudan University Sports Medicine Center and Department of Sports Medicine and Arthroscopy Surgery, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Jun Chen
- Fudan University Sports Medicine Center and Department of Sports Medicine and Arthroscopy Surgery, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Liang Zhou
- Department of Forest Products, Anhui Agricultural University, Hefei Anhui Province, People's Republic of China
| | - Shiyi Chen
- Fudan University Sports Medicine Center and Department of Sports Medicine and Arthroscopy Surgery, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
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Piao C, Li P, Liu G, Yang K. Viscoelasticity of repaired sciatic nerve by poly(lactic-co-glycolic acid) tubes. Neural Regen Res 2014; 8:3131-8. [PMID: 25206634 PMCID: PMC4158710 DOI: 10.3969/j.issn.1673-5374.2013.33.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 08/20/2013] [Indexed: 01/08/2023] Open
Abstract
Medical-grade synthetic poly(lactic-co-glycolic acid) polymer can be used as a biomaterial for nerve repair because of its good biocompatibility, biodegradability and adjustable degradation rate. The stress relaxation and creep properties of peripheral nerve can be greatly improved by repair with poly(lactic-co-glycolic acid) tubes. Ten sciatic nerve specimens were harvested from fresh corpses within 24 hours of death, and were prepared into sciatic nerve injury models by creating a 10 mm defect in each specimen. Defects were repaired by anastomosis with nerve autografts and poly(lactic-co-glycolic acid) tubes. Stress relaxation and creep testing showed that at 7 200 seconds, the sciatic nerve anastomosed by poly(lactic-co-glycolic acid) tubes exhibited a greater decrease in stress and increase in strain than those anastomosed by nerve autografts. These findings suggest that poly(lactic-co-glycolic acid) exhibits good viscoelasticity to meet the biomechanical require-ments for a biomaterial used to repair sciatic nerve injury.
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Affiliation(s)
- Chengdong Piao
- Department of Orthopedics, Second Hospital, Jilin University, Chuangchun 130028, Jilin Province, China
| | - Peng Li
- Department of Engineering Mechanics, Nanling Campus, Jilin University, Chuangchun 130022, Jilin Province, China
| | - Guangyao Liu
- Department of Orthopedics, China-Japan Union Hospital of Jilin University, Chuangchun 130031, Jilin Province, China
| | - Kun Yang
- Base Department, Aviation University of the Air Force of China, Chuangchun 130022, Jilin Province, China
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Biazar E, Keshel SH, Sahebalzamani A, Heidari M. Design of Oriented Porous PHBV Scaffold as a Neural Guide. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2013.879446] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lokanathan Y, Ng MH, Hasan S, Ali A, Mahmod M, Htwe O, Roohi SA, Bt Hj Idrus R, Abdullah S, Naicker AS. Olfactory ensheathing cells seeded muscle-stuffed vein as nerve conduit for peripheral nerve repair: a nerve conduction study. J Biosci Bioeng 2014; 118:231-4. [PMID: 24598302 DOI: 10.1016/j.jbiosc.2014.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 01/29/2014] [Accepted: 02/03/2014] [Indexed: 02/03/2023]
Abstract
We evaluated bridging of 15 mm nerve gap in rat sciatic nerve injury model with muscle-stuffed vein seeded with olfactory ensheathing cells as a substitute for nerve autograft. Neurophysiological recovery, as assessed by electrophysiological analysis was faster in the constructed biological nerve conduit compared to that of autograft.
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Affiliation(s)
- Yogeswaran Lokanathan
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Min-Hwei Ng
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Shariful Hasan
- Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Malaysia
| | - Anuar Ali
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Mazzre Mahmod
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Ohnmar Htwe
- Department of Orthopaedic and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Sharifah Ahmad Roohi
- Department of Orthopaedics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Malaysia
| | - Ruszymah Bt Hj Idrus
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur, Malaysia; Department of Physiology, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Shalimar Abdullah
- Department of Orthopaedic and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Amaramalar Selvi Naicker
- Department of Orthopaedic and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur, Malaysia.
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Biazar E, Keshel SH. Gelatin-Modified Nanofibrous PHBV Tube as Artificial Nerve Graft for Rat Sciatic Nerve Regeneration. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2013.845187] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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