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Lemos RS, Bentes LGDB, Vasconcelos MEDSL, Tramontin DF, da Costa LVP, Pimentel ALJC, de Araújo NP, de Andrade MC, Somensi DN, de Barros RSM. End-to-side neurorrhaphy in the reconstruction of peripheral segmental neural loss: an experimental study. Acta Cir Bras 2024; 39:e394024. [PMID: 39046042 PMCID: PMC11262751 DOI: 10.1590/acb394024] [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: 02/02/2024] [Accepted: 05/20/2024] [Indexed: 07/25/2024] Open
Abstract
PURPOSE To evaluate the effects on peripheral neural regeneration of the end-to-side embracing repair technique compared to the autograft repair technique in Wistar rats. METHODS Fifteen male Wistar rats were divided into three groups with five animals each: denervated group (GD), autograft group (GA), and embracing group (EG). For the evaluation, the grasping test, electroneuromyography (ENMG), and muscle weight assessment were used. RESULTS Muscle weight assessment and ENMG did not show significant neural regeneration at the end of 12 weeks in the DG and GE groups, but only in GA. The grasping test showed an increase in strength between the surgery and the fourth week in all groups, and only the GA maintained this trend until the 12th week. CONCLUSIONS The present study indicates that the neural regeneration observed in the end-to-side embracing neurorrhaphy technique, in the repair of segmental neural loss, is inferior to autograft repair in Wistar rats.
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Affiliation(s)
- Rafael Silva Lemos
- Universidade do Estado do Pará – Faculdade de Medicina – Laboratório de Cirurgia Experimental – Belém (PA) – Brazil
| | | | | | - Daniela Ferreira Tramontin
- Universidade do Estado do Pará – Faculdade de Medicina – Laboratório de Cirurgia Experimental – Belém (PA) – Brazil
| | - Luís Vinícius Pires da Costa
- Universidade do Estado do Pará – Faculdade de Medicina – Laboratório de Cirurgia Experimental – Belém (PA) – Brazil
| | | | - Nayara Pontes de Araújo
- Universidade Federal do Pará – Faculdade de Medicina – Laboratório de Cirurgia Experimental – Belém (PA) – Brazil
| | | | - Danusa Neves Somensi
- Universidade do Estado do Pará – Faculdade de Medicina – Laboratório de Cirurgia Experimental – Belém (PA) – Brazil
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2
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Ramesh PA, Sethuraman S, Subramanian A. Multichannel Conduits with Fascicular Complementation: Significance in Long Segmental Peripheral Nerve Injury. ACS Biomater Sci Eng 2024; 10:2001-2021. [PMID: 38487853 DOI: 10.1021/acsbiomaterials.3c01868] [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] [Indexed: 04/09/2024]
Abstract
Despite the advances in tissue engineering approaches, reconstruction of long segmental peripheral nerve defects remains unsatisfactory. Although autologous grafts with proper fascicular complementation have shown meaningful functional recovery according to the Medical Research Council Classification (MRCC), the lack of donor nerve for such larger defect sizes (>30 mm) has been a serious clinical issue. Further clinical use of hollow nerve conduits is limited to bridging smaller segmental defects of denuded nerve ends (<30 mm). Recently, bioinspired multichannel nerve guidance conduits (NGCs) gained attention as autograft substitutes as they mimic the fascicular connective tissue microarchitecture in promoting aligned axonal outgrowth with desirable innervation for complete sensory and motor function restoration. This review outlines the hierarchical organization of nerve bundles and their significance in the sensory and motor functions of peripheral nerves. This review also emphasizes the major challenges in addressing the longer nerve defects with the role of fascicular arrangement in the multichannel nerve guidance conduits and the need for fascicular matching to accomplish complete functional restoration, especially in treating long segmental nerve defects. Further, currently available fabrication strategies in developing multichannel nerve conduits and their inconsistency in existing preclinical outcomes captured in this review would seed a new process in designing an ideal larger nerve conduit for peripheral nerve repair.
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Affiliation(s)
- Preethy Amruthavarshini Ramesh
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology SASTRA Deemed University Thanjavur 613 401, India
| | - Swaminathan Sethuraman
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology SASTRA Deemed University Thanjavur 613 401, India
| | - Anuradha Subramanian
- Tissue Engineering & Additive Manufacturing (TEAM) Lab, Centre for Nanotechnology & Advanced Biomaterials, ABCDE Innovation Centre, School of Chemical & Biotechnology SASTRA Deemed University Thanjavur 613 401, India
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3
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Convertino D, Nencioni M, Russo L, Mishra N, Hiltunen VM, Bertilacchi MS, Marchetti L, Giacomelli C, Trincavelli ML, Coletti C. Interaction of graphene and WS 2 with neutrophils and mesenchymal stem cells: implications for peripheral nerve regeneration. NANOSCALE 2024; 16:1792-1806. [PMID: 38175567 DOI: 10.1039/d3nr04927b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Graphene and bidimensional (2D) materials have been widely used in nerve conduits to boost peripheral nerve regeneration. Nevertheless, the experimental and commercial variability in graphene-based materials generates graphene forms with different structures and properties that can trigger entirely diverse biological responses from all the players involved in nerve repair. Herein, we focus on the graphene and tungsten disulfide (WS2) interaction with non-neuronal cell types involved in nerve tissue regeneration. We synthesize highly crystalline graphene and WS2 with scalable techniques such as thermal decomposition and chemical vapor deposition. The materials were able to trigger the activation of a neutrophil human model promoting Neutrophil Extracellular Traps (NETs) production, particularly under basal conditions, although neutrophils were not able to degrade graphene. Of note is that pristine graphene acts as a repellent for the NET adhesion, a beneficial property for nerve conduit long-term applications. Mesenchymal stem cells (MSCs) have been proposed as a promising strategy for nerve regeneration in combination with a conduit. Thus, the interaction of graphene with MSCs was also investigated, and reduced viability was observed only on specific graphene substrates. Overall, the results confirm the possibility of regulating the cell response by varying graphene properties and selecting the most suitable graphene forms.
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Affiliation(s)
- Domenica Convertino
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
| | - Martina Nencioni
- Department of Pharmacy, University of Pisa, Via Bonanno 6, Pisa, Italy.
| | - Lara Russo
- Department of Pharmacy, University of Pisa, Via Bonanno 6, Pisa, Italy.
| | - Neeraj Mishra
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
- Graphene Labs, Istituto Italiano di Tecnologia, Via Morego 30, Genova, Italy
| | - Vesa-Matti Hiltunen
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
- Graphene Labs, Istituto Italiano di Tecnologia, Via Morego 30, Genova, Italy
| | | | - Laura Marchetti
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
- Department of Pharmacy, University of Pisa, Via Bonanno 6, Pisa, Italy.
| | - Chiara Giacomelli
- Department of Pharmacy, University of Pisa, Via Bonanno 6, Pisa, Italy.
| | | | - Camilla Coletti
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
- Graphene Labs, Istituto Italiano di Tecnologia, Via Morego 30, Genova, Italy
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4
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Convertino D, Trincavelli ML, Giacomelli C, Marchetti L, Coletti C. Graphene-based nanomaterials for peripheral nerve regeneration. Front Bioeng Biotechnol 2023; 11:1306184. [PMID: 38164403 PMCID: PMC10757979 DOI: 10.3389/fbioe.2023.1306184] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 11/30/2023] [Indexed: 01/03/2024] Open
Abstract
Emerging nanotechnologies offer numerous opportunities in the field of regenerative medicine and have been widely explored to design novel scaffolds for the regeneration and stimulation of nerve tissue. In this review, we focus on peripheral nerve regeneration. First, we introduce the biomedical problem and the present status of nerve conduits that can be used to guide, fasten and enhance regeneration. Then, we thoroughly discuss graphene as an emerging candidate in nerve tissue engineering, in light of its chemical, tribological and electrical properties. We introduce the graphene forms commonly used as neural interfaces, briefly review their applications, and discuss their potential toxicity. We then focus on the adoption of graphene in peripheral nervous system applications, a research field that has gained in the last years ever-increasing attention. We discuss the potential integration of graphene in guidance conduits, and critically review graphene interaction not only with peripheral neurons, but also with non-neural cells involved in nerve regeneration; indeed, the latter have recently emerged as central players in modulating the immune and inflammatory response and accelerating the growth of new tissue.
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Affiliation(s)
- Domenica Convertino
- Center for Nanotechnology Innovation @NEST, Istituto Italiano di Tecnologia, Pisa, Italy
| | | | | | - Laura Marchetti
- Center for Nanotechnology Innovation @NEST, Istituto Italiano di Tecnologia, Pisa, Italy
- Department of Pharmacy, University of Pisa, Pisa, Italy
| | - Camilla Coletti
- Center for Nanotechnology Innovation @NEST, Istituto Italiano di Tecnologia, Pisa, Italy
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5
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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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6
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Li Q, Fu X, Kou Y, Han N. Engineering strategies and optimized delivery of exosomes for theranostic application in nerve tissue. Theranostics 2023; 13:4266-4286. [PMID: 37554270 PMCID: PMC10405842 DOI: 10.7150/thno.84971] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 07/05/2023] [Indexed: 08/10/2023] Open
Abstract
Severe injuries or diseases affecting the peripheral and central nervous systems can result in impaired organ function and permanent paralysis. Conventional interventions, such as drug administration and cell-based therapy, exhibit limited effectiveness due to their inability to preserve post-implantation cell survival and impede the deterioration of adjacent tissues. Exosomes have recently emerged as powerful tools for tissue repair owing to their proteins and nucleic acids, as well as their unique phospholipid properties, which facilitate targeted delivery to recipient cells. Engineering exosomes, obtained by manipulating the parental cells or directly functionalizing exosomes, play critical roles in enhancing regenerative repair, reducing inflammation, and maintaining physiological homeostasis. Furthermore, exosomes have been shown to restore neurological function when used in combination with biomaterials. This paper primarily focuses on the engineering strategies and delivery routes of exosomes related to neural research and emphasizes the theranostic application of optimized exosomes in peripheral nerve, traumatic spinal cord, and brain injuries. Finally, the prospects of exosomes development and their combination with other approaches will be discussed to enhance our knowledge on their theranostic effectiveness in neurological diseases.
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Affiliation(s)
- Qicheng Li
- Department of Trauma and Orthopedics, Peking University People's Hospital, Beijing 100000, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Ministry of Education, Beijing 100000, China
| | - Xiaoyang Fu
- Department of Trauma and Orthopedics, Peking University People's Hospital, Beijing 100000, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Ministry of Education, Beijing 100000, China
- Department of Central Laboratory and Institute of Clinical Molecular Biology, Peking University People's Hospital, Beijing 100000, China
| | - Yuhui Kou
- Department of Trauma and Orthopedics, Peking University People's Hospital, Beijing 100000, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Ministry of Education, Beijing 100000, China
- National Center for Trauma Medicine, Beijing 100000, China
| | - Na Han
- Department of Trauma and Orthopedics, Peking University People's Hospital, Beijing 100000, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Ministry of Education, Beijing 100000, China
- National Center for Trauma Medicine, Beijing 100000, China
- Department of Central Laboratory and Institute of Clinical Molecular Biology, Peking University People's Hospital, Beijing 100000, China
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7
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Han N, Zhang W, Fang XX, Li QC, Pi W. Reduced graphene oxide-embedded nerve conduits loaded with bone marrow mesenchymal stem cell-derived extracellular vesicles promote peripheral nerve regeneration. Neural Regen Res 2023. [PMID: 35799543 PMCID: PMC9241414 DOI: 10.4103/1673-5374.343889] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
We previously combined reduced graphene oxide (rGO) with gelatin-methacryloyl (GelMA) and polycaprolactone (PCL) to create an rGO-GelMA-PCL nerve conduit and found that the conductivity and biocompatibility were improved. However, the rGO-GelMA-PCL nerve conduits differed greatly from autologous nerve transplants in their ability to promote the regeneration of injured peripheral nerves and axonal sprouting. Extracellular vesicles derived from bone marrow mesenchymal stem cells (BMSCs) can be loaded into rGO-GelMA-PCL nerve conduits for repair of rat sciatic nerve injury because they can promote angiogenesis at the injured site. In this study, 12 weeks after surgery, sciatic nerve function was measured by electrophysiology and sciatic nerve function index, and myelin sheath and axon regeneration were observed by electron microscopy, immunohistochemistry, and immunofluorescence. The regeneration of microvessel was observed by immunofluorescence. Our results showed that rGO-GelMA-PCL nerve conduits loaded with BMSC-derived extracellular vesicles were superior to rGO-GelMA-PCL conduits alone in their ability to increase the number of newly formed vessels and axonal sprouts at the injury site as well as the recovery of neurological function. These findings indicate that rGO-GelMA-PCL nerve conduits loaded with BMSC-derived extracellular vesicles can promote peripheral nerve regeneration and neurological function recovery, and provide a new direction for the curation of peripheral nerve defect in the clinic.
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8
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Nazeri N, Derakhshan MA, Mansoori K, Ghanbari H. Improvement of sciatic nerve regeneration by multichannel nanofibrous membrane-embedded electro-conductive conduits functionalized with laminin. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2022; 33:50. [PMID: 35639181 PMCID: PMC9156509 DOI: 10.1007/s10856-022-06669-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
Multichannel structures in the design of nerve conduits offer potential advantages for regeneration of damaged nerves. However, lack of biochemical cues and electrical stimulation could hamper satisfactory nerve regeneration. The aim of this study was to simultaneously evaluate the effects of topographical, biological, and electrical cues on sciatic nerve regeneration. Accordingly, a series of multichannel nerve conduit was made using longitudinally-aligned laminin-coated poly (lactic-co-glycolic acid) (PLGA)/carbon nanotubes (CNT) nanofibers (NF, mean diameter: 455 ± 362 nm) in the lumen and randomly-oriented polycaprolactone (PCL) NF (mean diameter: 340 ± 200 nm) on the outer surface. In vitro studies revealed that the materials were nontoxic and able to promote cell attachment and proliferation on nanofibers and on fibrin gel. To determine the influence of laminin as biological and CNT as electrical cues on nerve regeneration, either of hollow PCL conduits, PLGA NF-embedded, PLGA/CNT NF-embedded or laminin-coated PLGA/CNT NF-embedded PCL conduits were implanted in rats. A new surgery method was utilized and results were compared with an autograft. The results of motor and sensory tests in addition to histopathological examination of the regenerated nerves demonstrated the formation of nerve fibers in laminin-coated PLGA/CNT NF-embedded PCL conduits. Results suggested that these conduits have the potential to improve sciatic nerve regeneration. Graphical abstract.
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Affiliation(s)
- Niloofar Nazeri
- Cellular and Molecular Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Derakhshan
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Korosh Mansoori
- Neuromusculoskeletal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Ghanbari
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
- Research Center for Advanced Technologies in Cardiovascular Medicine, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
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9
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Liu G, Ma M, Meng H, Liu J, Zheng Y, Peng J, Wei S, Sun Y, Wang Y, Xie Y, Li J. In-situ self-assembly of bacterial cellulose/poly(3,4-ethylenedioxythiophene)-sulfonated nanofibers for peripheral nerve repair. Carbohydr Polym 2022; 281:119044. [DOI: 10.1016/j.carbpol.2021.119044] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/19/2021] [Accepted: 12/22/2021] [Indexed: 12/21/2022]
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10
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Manousiouthakis E, Park J, Hardy JG, Lee JY, Schmidt CE. Towards the translation of electroconductive organic materials for regeneration of neural tissues. Acta Biomater 2022; 139:22-42. [PMID: 34339871 DOI: 10.1016/j.actbio.2021.07.065] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 12/13/2022]
Abstract
Carbon-based conductive and electroactive materials (e.g., derivatives of graphene, fullerenes, polypyrrole, polythiophene, polyaniline) have been studied since the 1970s for use in a broad range of applications. These materials have electrical properties comparable to those of commonly used metals, while providing other benefits such as flexibility in processing and modification with biologics (e.g., cells, biomolecules), to yield electroactive materials with biomimetic mechanical and chemical properties. In this review, we focus on the uses of these electroconductive materials in the context of the central and peripheral nervous system, specifically recent studies in the peripheral nerve, spinal cord, brain, eye, and ear. We also highlight in vivo studies and clinical trials, as well as a snapshot of emerging classes of electroconductive materials (e.g., biodegradable materials). We believe such specialized electrically conductive biomaterials will clinically impact the field of tissue regeneration in the foreseeable future. STATEMENT OF SIGNIFICANCE: This review addresses the use of conductive and electroactive materials for neural tissue regeneration, which is of significant interest to a broad readership, and of particular relevance to the growing community of scientists, engineers and clinicians in academia and industry who develop novel medical devices for tissue engineering and regenerative medicine. The review covers the materials that may be employed (primarily focusing on derivatives of fullerenes, graphene and conjugated polymers) and techniques used to analyze materials composed thereof, followed by sections on the application of these materials to nervous tissues (i.e., peripheral nerve, spinal cord, brain, optical, and auditory tissues) throughout the body.
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Affiliation(s)
- Eleana Manousiouthakis
- Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville 32611, FL, United States
| | - Junggeon Park
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - John G Hardy
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom; Materials Science Institute, Lancaster University, Lancaster LA1 4YB, United Kingdom.
| | - Jae Young Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
| | - Christine E Schmidt
- Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville 32611, FL, United States.
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11
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Wang Q, Wang H, Ma Y, Cao X, Gao H. Effects of Electroactive materials on nerve cell behaviors and applications in peripheral nerve repair. Biomater Sci 2022; 10:6061-6076. [DOI: 10.1039/d2bm01216b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Peripheral nerve damage can lead to loss of function or even complete disability, which bring about a huge burden on both the patient and society. Regulating nerve cell behavior and...
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12
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Parker BJ, Rhodes DI, O'Brien CM, Rodda AE, Cameron NR. Nerve guidance conduit development for primary treatment of peripheral nerve transection injuries: A commercial perspective. Acta Biomater 2021; 135:64-86. [PMID: 34492374 DOI: 10.1016/j.actbio.2021.08.052] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/19/2021] [Accepted: 08/30/2021] [Indexed: 12/17/2022]
Abstract
Commercial nerve guidance conduits (NGCs) for repair of peripheral nerve discontinuities are of little use in gaps larger than 30 mm, and for smaller gaps they often fail to compete with the autografts that they are designed to replace. While recent research to develop new technologies for use in NGCs has produced many advanced designs with seemingly positive functional outcomes in animal models, these advances have not been translated into viable clinical products. While there have been many detailed reviews of the technologies available for creating NGCs, none of these have focussed on the requirements of the commercialisation process which are vital to ensure the translation of a technology from bench to clinic. Consideration of the factors essential for commercial viability, including regulatory clearance, reimbursement processes, manufacturability and scale up, and quality management early in the design process is vital in giving new technologies the best chance at achieving real-world impact. Here we have attempted to summarise the major components to consider during the development of emerging NGC technologies as a guide for those looking to develop new technology in this domain. We also examine a selection of the latest academic developments from the viewpoint of clinical translation, and discuss areas where we believe further work would be most likely to bring new NGC technologies to the clinic. STATEMENT OF SIGNIFICANCE: NGCs for peripheral nerve repairs represent an adaptable foundation with potential to incorporate modifications to improve nerve regeneration outcomes. In this review we outline the regulatory processes that functionally distinct NGCs may need to address and explore new modifications and the complications that may need to be addressed during the translation process from bench to clinic.
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Affiliation(s)
- Bradyn J Parker
- Department of Materials Science and Engineering, Monash University, 22 Alliance Lane, Clayton, Victoria 3800, Australia; Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Research Way, Clayton, Victoria 3168, Australia
| | - David I Rhodes
- Department of Materials Science and Engineering, Monash University, 22 Alliance Lane, Clayton, Victoria 3800, Australia; ReNerve Pty. Ltd., Brunswick East 3057, Australia
| | - Carmel M O'Brien
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Research Way, Clayton, Victoria 3168, Australia; Australian Regenerative Medicine Institute, Science, Technology, Research and innovation Precinct (STRIP), Monash University, Wellington Road, Clayton, Victoria 3800, Australia
| | - Andrew E Rodda
- Department of Materials Science and Engineering, Monash University, 22 Alliance Lane, Clayton, Victoria 3800, Australia
| | - Neil R Cameron
- Department of Materials Science and Engineering, Monash University, 22 Alliance Lane, Clayton, Victoria 3800, Australia; School of Engineering, University of Warwick, Coventry CV4 7AL, United Kingdom.
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13
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Isvoranu G, Manole E, Neagu M. Gait Analysis Using Animal Models of Peripheral Nerve and Spinal Cord Injuries. Biomedicines 2021; 9:1050. [PMID: 34440252 PMCID: PMC8392642 DOI: 10.3390/biomedicines9081050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/13/2021] [Accepted: 08/16/2021] [Indexed: 11/17/2022] Open
Abstract
The present review discusses recent data regarding rodent models of spinal cord and peripheral nerve injuries in terms of gait analysis using the CatWalk system (CW), an automated and exceptionally reliable system for assessing gait abnormalities and motor coordination. CW is a good tool for both studying improvements in the walking of animals after suffering a peripheral nerve and spinal cord lesion and to select the best therapies and procedures after tissue destruction, given that it provides objective and quantifiable data. Most studies using CW for gait analysis that were published in recent years focus on injuries inflicted in the peripheral nerve, spinal cord, and brain. CW has been used in the assessment of rodent motor function through high-resolution videos, whereby specialized software was used to measure several aspects of the animal's gait, and the main characteristics of the automated system are presented here. CW was developed to assess footfall and gait changes, and it can calculate many parameters based on footprints and time. However, given the multitude of parameters, it is necessary to evaluate which are the most important under the employed experimental circumstances. By selecting appropriate animal models and evaluating peripheral nerve and spinal cord lesion regeneration using standardized methods, suggestions for new therapies can be provided, which represents the translation of this methodology into clinical application.
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Affiliation(s)
- Gheorghita Isvoranu
- Husbandry Unit, Victor Babes National Institute of Pathology, 99-101 Splaiul Independentei, 050096 Bucharest, Romania;
| | - Emilia Manole
- Laboratory of Cellular Biology, Neuroscience and Experimental Myology, Victor Babes National Institute of Pathology, 99-101 Splaiul Independentei, 050096 Bucharest, Romania
- Pathology Department, Colentina University Hospital, 19-21 Sos. Stefan cel Mare, 020125 Bucharest, Romania;
| | - Monica Neagu
- Pathology Department, Colentina University Hospital, 19-21 Sos. Stefan cel Mare, 020125 Bucharest, Romania;
- Immunology Laboratory, Victor Babes National Institute of Pathology, 99-101 Splaiul Independentei, 050096 Bucharest, Romania
- Doctoral School of Biology, Faculty of Biology, University of Bucharest, 91-93 Splaiul Independentei, 050095 Bucharest, Romania
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Aydemir Sezer U, Ozturk Yavuz K, Ors G, Bay S, Aru B, Sogut O, Akgul Caglar T, Bozkurt MR, Cagavi E, Yanikkaya Demirel G, Sezer S, Karaca H. Zero-valent iron nanoparticles containing nanofiber scaffolds for nerve tissue engineering. J Tissue Eng Regen Med 2020; 14:1815-1826. [PMID: 33010108 DOI: 10.1002/term.3137] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 08/25/2020] [Accepted: 09/10/2020] [Indexed: 12/11/2022]
Abstract
Regeneration of nerve tissue is a challenging issue in regenerative medicine. Especially, the peripheral nerve defects related to the accidents are one of the leading health problems. For large degeneration of peripheral nerve, nerve grafts are used in order to obtain a connection. These grafts should be biodegradable to prevent second surgical intervention. In order to make more effective nerve tissue engineering materials, nanotechnological improvements were used. Especially, the addition of electrically conductive and biocompatible metallic particles and carbon structures has essential roles in the stimulation of nerves. However, the metabolizing of these structures remains to wonder because of their nondegradable nature. In this study, biodegradable and conductive nerve tissue engineering materials containing zero-valent iron (Fe) nanoparticles were developed and investigated under in vitro conditions. By using electrospinning technique, fibrous mats composed of electrospun poly(ε-caprolactone) (PCL) nanofibers and Fe nanoparticles were obtained. Both electrical conductivity and mechanical properties increased compared with control group that does not contain nanoparticles. Conductivity of PCL/Fe5 and PCL/Fe10 increased to 0.0041 and 0.0152 from 0.0013 Scm-1 , respectively. Cytotoxicity results indicated toxicity for composite mat containing 20% Fe nanoparticles (PCL/Fe20). SH-SY5Y cells were grown on PCL/Fe10 best, which contains 10% Fe nanoparticles. Beta III tubulin staining of dorsal root ganglion neurons seeded on mats revealed higher cell number on PCL/Fe10. This study demonstrated the impact of zero-valent Fe nanoparticles on nerve regeneration. The results showed the efficacy of the conductive nanoparticles, and the amount in the composition has essential roles in the promotion of the neurites.
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Affiliation(s)
- Umran Aydemir Sezer
- Faculty of Medicine, Department of Pharmacology, Medicine, Medical Devices and Dermocosmetic Research and Application Laboratory (IDAL), Suleyman Demirel University, Isparta, Turkey.,Department of Regenerative Medicine, Institute of Health Sciences, Isparta, Turkey.,Semical Technology Industry and Trade Co. Ltd., Suleyman Demirel University, Lake District Technopark, Isparta, Turkey
| | | | - Gizem Ors
- Department of Medical Biology, School of Medicine, Istanbul Medipol University, Istanbul, Turkey.,Regenerative and Restorative Medicine Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey
| | - Sadık Bay
- Neuroscience PhD Programme, Institute of Health, Istanbul Medipol University, Istanbul, Turkey.,Regenerative and Restorative Medicine Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey
| | - Basak Aru
- Faculty of Medicine, Immunology Department, Yeditepe University, Istanbul, Turkey
| | - Oguz Sogut
- Faculty of Medicine, Department of Pharmacology, Medicine, Medical Devices and Dermocosmetic Research and Application Laboratory (IDAL), Suleyman Demirel University, Isparta, Turkey
| | - Tuba Akgul Caglar
- Neuroscience PhD Programme, Institute of Health, Istanbul Medipol University, Istanbul, Turkey.,Regenerative and Restorative Medicine Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey
| | - Mehmet Recep Bozkurt
- Department of Electrical and Electronics Engineering, Sakarya University, Sakarya, Turkey
| | - Esra Cagavi
- Department of Medical Biology, School of Medicine, Istanbul Medipol University, Istanbul, Turkey.,Regenerative and Restorative Medicine Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey
| | | | - Serdar Sezer
- Faculty of Medicine, Department of Pharmacology, Medicine, Medical Devices and Dermocosmetic Research and Application Laboratory (IDAL), Suleyman Demirel University, Isparta, Turkey.,Department of Regenerative Medicine, Institute of Health Sciences, Isparta, Turkey.,Semical Technology Industry and Trade Co. Ltd., Suleyman Demirel University, Lake District Technopark, Isparta, Turkey
| | - Huseyin Karaca
- Department of Chemistry, Sakarya University, Sakarya, Turkey
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