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Rochkind S, Sirota S, Kushnir A. Nerve Reconstruction Using ActiGraft Blood Clot in Rabbit Acute Peripheral Injury Model: Preliminary Study. Bioengineering (Basel) 2024; 11:298. [PMID: 38671720 PMCID: PMC11047591 DOI: 10.3390/bioengineering11040298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/16/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
This preliminary study aimed to investigate an ActiGraft blood clot implant (RedDress Ltd., Pardes-Hanna, Israel) attempting to treat and induce the regeneration of a completely injured peripheral nerve with a massive loss defect. The tibial portion of the sciatic nerve in 11 rabbits was transected, and a 25 mm nerve gap was reconnected using a collagen tube. A comparison was performed between the treatment group (eight rabbits; reconnection using a tube filled with ActiGraft blood clot) and the control group (three rabbits; gap reconnection using an empty tube). The post-operative follow-up period lasted 18 weeks and included electrophysiological and histochemical assessments. The pathological severity score was high in the tube cross sections of the control group (1.33) compared to the ActiGraft blood clot treatment group (0.63). Morphometric analysis showed a higher percentage of the positive myelin basic protein (MBP) stained area in the ActiGraft blood clot group (19.57%) versus the control group (3.67%). These differences were not statistically significant due to the small group sizes and the large intra-group variability. The results of this preliminary study suggest that the application of an ActiGraft blood clot (into the collagen tube) can enable nerve recovery. However, a future study using a larger animal group is required to achieve objective statistical results.
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Affiliation(s)
- Shimon Rochkind
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Sharon Sirota
- RedDress Ltd., Pardes Hana 3701142, Israel; (S.S.); (A.K.)
| | - Alon Kushnir
- RedDress Ltd., Pardes Hana 3701142, Israel; (S.S.); (A.K.)
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2
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Wan T, Wang YL, Zhang FS, Zhang XM, Zhang YC, Jiang HR, Zhang M, Zhang PX. The Porous Structure of Peripheral Nerve Guidance Conduits: Features, Fabrication, and Implications for Peripheral Nerve Regeneration. Int J Mol Sci 2023; 24:14132. [PMID: 37762437 PMCID: PMC10531895 DOI: 10.3390/ijms241814132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Porous structure is an important three-dimensional morphological feature of the peripheral nerve guidance conduit (NGC), which permits the infiltration of cells, nutrients, and molecular signals and the discharge of metabolic waste. Porous structures with precisely customized pore sizes, porosities, and connectivities are being used to construct fully permeable, semi-permeable, and asymmetric peripheral NGCs for the replacement of traditional nerve autografts in the treatment of long-segment peripheral nerve injury. In this review, the features of porous structures and the classification of NGCs based on these characteristics are discussed. Common methods for constructing 3D porous NGCs in current research are described, as well as the pore characteristics and the parameters used to tune the pores. The effects of the porous structure on the physical properties of NGCs, including biodegradation, mechanical performance, and permeability, were analyzed. Pore structure affects the biological behavior of Schwann cells, macrophages, fibroblasts, and vascular endothelial cells during peripheral nerve regeneration. The construction of ideal porous structures is a significant advancement in the regeneration of peripheral nerve tissue engineering materials. The purpose of this review is to generalize, summarize, and analyze methods for the preparation of porous NGCs and their biological functions in promoting peripheral nerve regeneration to guide the development of medical nerve repair materials.
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Affiliation(s)
- Teng Wan
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Yi-Lin Wang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Feng-Shi Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Xiao-Meng Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Yi-Chong Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Hao-Ran Jiang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Meng Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
| | - Pei-Xun Zhang
- Department of OrthopedSics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (T.W.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Centre for Trauma Medicine, Beijing 100044, China
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3
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Solomevich SO, Oranges CM, Kalbermatten DF, Schwendeman A, Madduri S. Natural polysaccharides and their derivatives as potential medical materials and drug delivery systems for the treatment of peripheral nerve injuries. Carbohydr Polym 2023; 315:120934. [PMID: 37230605 DOI: 10.1016/j.carbpol.2023.120934] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/07/2023] [Accepted: 04/17/2023] [Indexed: 05/27/2023]
Abstract
Peripheral nerve repair following injury is one of the most serious problems in neurosurgery. Clinical outcomes are often unsatisfactory and associated with a huge socioeconomic burden. Several studies have revealed the great potential of biodegradable polysaccharides for improving nerve regeneration. We review here the promising therapeutic strategies involving different types of polysaccharides and their bio-active composites for promoting nerve regeneration. Within this context, polysaccharide materials widely used for nerve repair in different forms are highlighted, including nerve guidance conduits, hydrogels, nanofibers and films. While nerve guidance conduits and hydrogels were used as main structural scaffolds, the other forms including nanofibers and films were generally used as additional supporting materials. We also discuss the issues of ease of therapeutic implementation, drug release properties and therapeutic outcomes, together with potential future directions of research.
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Affiliation(s)
- Sergey O Solomevich
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA; Research Institute for Physical Chemical Problems of the Belarusian State University, Minsk, Belarus
| | - Carlo M Oranges
- Plastic, Reconstructive and Aesthetic Surgery Division, Department of Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
| | - Daniel F Kalbermatten
- Plastic, Reconstructive and Aesthetic Surgery Division, Department of Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland; Bioengineering and Neuroregeneration Laboratory, Department of Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
| | - Anna Schwendeman
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA; Biointerfaces Institute, University of Michigan, Ann Arbor, MI, USA
| | - Srinivas Madduri
- Plastic, Reconstructive and Aesthetic Surgery Division, Department of Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland; Bioengineering and Neuroregeneration Laboratory, Department of Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
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4
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Hu X, Xu W, Ren Y, Wang Z, He X, Huang R, Ma B, Zhao J, Zhu R, Cheng L. Spinal cord injury: molecular mechanisms and therapeutic interventions. Signal Transduct Target Ther 2023; 8:245. [PMID: 37357239 DOI: 10.1038/s41392-023-01477-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/22/2023] [Accepted: 05/07/2023] [Indexed: 06/27/2023] Open
Abstract
Spinal cord injury (SCI) remains a severe condition with an extremely high disability rate. The challenges of SCI repair include its complex pathological mechanisms and the difficulties of neural regeneration in the central nervous system. In the past few decades, researchers have attempted to completely elucidate the pathological mechanism of SCI and identify effective strategies to promote axon regeneration and neural circuit remodeling, but the results have not been ideal. Recently, new pathological mechanisms of SCI, especially the interactions between immune and neural cell responses, have been revealed by single-cell sequencing and spatial transcriptome analysis. With the development of bioactive materials and stem cells, more attention has been focused on forming intermediate neural networks to promote neural regeneration and neural circuit reconstruction than on promoting axonal regeneration in the corticospinal tract. Furthermore, technologies to control physical parameters such as electricity, magnetism and ultrasound have been constantly innovated and applied in neural cell fate regulation. Among these advanced novel strategies and technologies, stem cell therapy, biomaterial transplantation, and electromagnetic stimulation have entered into the stage of clinical trials, and some of them have already been applied in clinical treatment. In this review, we outline the overall epidemiology and pathophysiology of SCI, expound on the latest research progress related to neural regeneration and circuit reconstruction in detail, and propose future directions for SCI repair and clinical applications.
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Affiliation(s)
- Xiao Hu
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Wei Xu
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Yilong Ren
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Zhaojie Wang
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Xiaolie He
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Runzhi Huang
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Bei Ma
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Jingwei Zhao
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China
| | - Rongrong Zhu
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China.
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China.
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China.
| | - Liming Cheng
- Division of Spine, Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China.
- Key Laboratory of Spine and Spinal cord Injury Repair and Regeneration (Tongji University), Ministry of Education, 200065, Shanghai, China.
- Clinical Center For Brain And Spinal Cord Research, Tongji University, 200065, Shanghai, China.
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Sun D. Sacrificial gelatin of PAM-Alginate-BC hydrogel tube with tunable diameter as nerve conduit. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023:1-10. [PMID: 36625028 DOI: 10.1080/09205063.2023.2167047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Peripheral nerve regeneration is still one of the biggest challenges, autologous nerve transplantation is the 'gold standard' for evaluating its alternative therapy. However, the source of autologous nerves is limited, it is imminent to synthesize a nerve-guiding catheter material with a controllable diameter of a small orifice. Sacrificial gelatin polyacrylamide-Alginate-Bacterial cellulose (PAM-Alginate-BC) hydrogel overcomes poor mechanical properties with tunable diameter. In addition, the PAM-Alginate-BC hydrogel possesses the beneficial properties required for cell scaffolding with surface adhesion ability. The PAM-Alginate-BC materials options have potential applications in peripheral nerve regeneration.
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Affiliation(s)
- Di Sun
- Key Laboratory of Photochemical Conversion and Optoelectronic Material, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P.R. China
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6
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Tiwari AP, Lokai T, Albin B, Yang IH. A Review on the Technological Advances and Future Perspectives of Axon Guidance and Regeneration in Peripheral Nerve Repair. Bioengineering (Basel) 2022; 9:bioengineering9100562. [PMID: 36290530 PMCID: PMC9598559 DOI: 10.3390/bioengineering9100562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/03/2022] [Accepted: 10/11/2022] [Indexed: 11/16/2022] Open
Abstract
Despite a significant advance in the pathophysiological understanding of peripheral nerve damage, the successful treatment of large nerve defects remains an unmet medical need. In this article, axon growth guidance for peripheral nerve regeneration was systematically reviewed and discussed mainly from the engineering perspective. In addition, the common approaches to surgery, bioengineering approaches to emerging technologies such as optogenetic stimulation and magnetic stimulation for functional recovery were discussed, along with their pros and cons. Additionally, clear future perspectives of axon guidance and nerve regeneration were addressed.
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7
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Vibration and Trajectory Tracking Control of Engineering Mechanical Arm Based on Neural Network. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:4461546. [PMID: 35909853 PMCID: PMC9337976 DOI: 10.1155/2022/4461546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/21/2022] [Accepted: 06/27/2022] [Indexed: 11/18/2022]
Abstract
We offer a neural network-based control method to control the vibration of the engineering mechanical arm and the trajectory in order to solve the problem of large errors in tracking the path when the engineering mechanical arm is unstable and under the influence of the outside world. A mechanical arm network is used to perform tasks related to learning the unknown dynamic properties of a engineering mechanical arms keyboard without the need for prior learning. Given the dynamic equations of the engineering mechanical arm, the dynamic properties of the mechanical arm were studied using a positive feedback network. The adaptive neural network management system was developed, and the stability and integrity of the closed-loop system were proved by Lyapunov’s function. Engineering mechanical arm motion trajectory control errors were modeled and validated in the Matlab/Simulink environment. The simulation results show that the management of the adaptive neural network is able to better control the desired path of the engineering mechanical arm in the presence of external interference, and the fluctuation range of input torque is small. The PID control has a large error in the expected trajectory tracking of the engineering mechanical arm, the fluctuation range of the input torque is as high as 20, and the jitter phenomenon is more serious. The use of detailed comparisons and adaptive neural network monitoring can perform well in manipulating the trajectory of the engineering mechanical arm. The engineering mechanical arm uses an adaptive neural network control method, in which the control precision of engineering mechanical arm motion trajectory can be improved and the out-of-control phenomenon of mechanical arm motion can be reduced.
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8
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Roca FG, Santos LG, Roig MM, Medina LM, Martínez-Ramos C, Pradas MM. Novel Tissue-Engineered Multimodular Hyaluronic Acid-Polylactic Acid Conduits for the Regeneration of Sciatic Nerve Defect. Biomedicines 2022; 10:biomedicines10050963. [PMID: 35625700 PMCID: PMC9138968 DOI: 10.3390/biomedicines10050963] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/14/2022] [Accepted: 04/18/2022] [Indexed: 02/01/2023] Open
Abstract
The gold standard for the treatment of peripheral nerve injuries, the autograft, presents several drawbacks, and engineered constructs are currently suitable only for short gaps or small diameter nerves. Here, we study a novel tissue-engineered multimodular nerve guidance conduit for the treatment of large nerve damages based in a polylactic acid (PLA) microfibrillar structure inserted inside several co-linear hyaluronic acid (HA) conduits. The highly aligned PLA microfibers provide a topographical cue that guides axonal growth, and the HA conduits play the role of an epineurium and retain the pre-seeded auxiliary cells. The multimodular design increases the flexibility of the device. Its performance for the regeneration of a critical-size (15 mm) rabbit sciatic nerve defect was studied and, after six months, very good nerve regeneration was observed. The multimodular approach contributed to a better vascularization through the micrometrical gaps between HA conduits, and the pre-seeded Schwann cells increased axonal growth. Six months after surgery, a cross-sectional available area occupied by myelinated nerve fibers above 65% at the central and distal portions was obtained when the multimodular device with pre-seeded Schwann cells was employed. The results validate the multi-module approach for the regeneration of large nerve defects and open new possibilities for surgical solutions in this field.
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Affiliation(s)
- Fernando Gisbert Roca
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 Valencia, Spain; (F.G.R.); (L.G.S.); (C.M.-R.)
| | - Luis Gil Santos
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 Valencia, Spain; (F.G.R.); (L.G.S.); (C.M.-R.)
| | - Manuel Mata Roig
- Department of Pathology, Faculty of Medicine and Dentistry, Universitat de València, 46010 Valencia, Spain; (M.M.R.); (L.M.M.)
| | - Lara Milian Medina
- Department of Pathology, Faculty of Medicine and Dentistry, Universitat de València, 46010 Valencia, Spain; (M.M.R.); (L.M.M.)
| | - Cristina Martínez-Ramos
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 Valencia, Spain; (F.G.R.); (L.G.S.); (C.M.-R.)
- Unitat Predepartamental de Medicina, Universitat Jaume I, 12071 Castellón de la Plana, Spain
| | - Manuel Monleón Pradas
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 Valencia, Spain; (F.G.R.); (L.G.S.); (C.M.-R.)
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Correspondence: ; Tel.: +34-963-877000
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Merolli A, Li M, Voronin G, Bright L. A sciatic nerve gap-injury model in the rabbit. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2022; 33:14. [PMID: 35061121 PMCID: PMC8782784 DOI: 10.1007/s10856-022-06642-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
There has been an increased number of studies of nerve transection injuries with the sciatic nerve gap-injury model in the rabbit in the past 2 years. We wanted to define in greater detail what is needed to test artificial nerve guides in a sciatic nerve gap-injury model in the rabbit. We hope that this will help investigators to fully exploit the robust translational potential of the rabbit sciatic nerve gap-injury model in its capacity to test devices whose diameter and length are in the range of those commonly applied in hand and wrist surgery (diameter ranging between 2 and 4 mm; length up to 30 mm). We suggest that the rabbit model should replace the less translational rat model in nerve regeneration research. The rabbit sciatic model, however, requires an effective strategy to prevent and control self-mutilation of the foot in the postoperative period, and to prevent pressure ulcers.
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Affiliation(s)
- Antonio Merolli
- Department of Physics and Astronomy, Rutgers-The State University of New Jersey, New Brunswick, NJ, USA.
- New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, New Brunswick, NJ, USA.
| | - Michelle Li
- New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, New Brunswick, NJ, USA
| | - Gregory Voronin
- In Vivo Research Services, Rutgers-The State University of New Jersey, New Brunswick, NJ, USA
| | - Lauren Bright
- Comparative Medicine Resources, Rutgers-The State University of New Jersey, New Brunswick, NJ, USA
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Raghav A, Singh M, Jeong GB, Giri R, Agarwal S, Kala S. New horizons of biomaterials in treatment of nerve damage in diabetes mellitus: A translational prospective review. Front Endocrinol (Lausanne) 2022; 13:1036220. [PMID: 36387914 PMCID: PMC9647066 DOI: 10.3389/fendo.2022.1036220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 09/28/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Peripheral nerve injury is a serious concern that leads to loss of neuronal communication that impairs the quality of life and, in adverse conditions, causes permanent disability. The limited availability of autografts with associated demerits shifts the paradigm of researchers to use biomaterials as an alternative treatment approach to recover nerve damage. PURPOSE The purpose of this study is to explore the role of biomaterials in translational treatment approaches in diabetic neuropathy. STUDY DESIGN The present study is a prospective review study. METHODS Published literature on the role of biomaterials in therapeutics was searched for. RESULTS Biomaterials can be implemented with desired characteristics to overcome the problem of nerve regeneration. Biomaterials can be further exploited in the treatment of nerve damage especially associated with PDN. These can be modified, customized, and engineered as scaffolds with the potential of mimicking the extracellular matrix of nerve tissue along with axonal regeneration. Due to their beneficial biological deeds, they can expedite tissue repair and serve as carriers of cellular and pharmacological treatments. Therefore, the emerging research area of biomaterials-mediated treatment of nerve damage provides opportunities to explore them as translational biomedical treatment approaches. CONCLUSIONS Pre-clinical and clinical trials in this direction are needed to establish the effective role of several biomaterials in the treatment of other human diseases.
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Affiliation(s)
- Alok Raghav
- Multidisciplinary Research Unit, Department of Health Research, Ganesh Shankar Vidyarthi Memorial (GSVM) Medical College, Kanpur, India
- *Correspondence: Alok Raghav,
| | - Manish Singh
- Multidisciplinary Research Unit, Department of Health Research, Ganesh Shankar Vidyarthi Memorial (GSVM) Medical College, Kanpur, India
- Department of Neurosurgery, Ganesh Shankar Vidyarthi Memorial (GSVM) Medical College, Kanpur, India
| | - Goo-Bo Jeong
- Department of Anatomy and Cell Biology, College of Medicine, Gachon University, Incheon, South Korea
| | - Richa Giri
- Multidisciplinary Research Unit, Department of Health Research, Ganesh Shankar Vidyarthi Memorial (GSVM) Medical College, Kanpur, India
- Kamlapat Singhania (KPS) Institute of Medicine, Ganesh Shankar Vidyarthi Memorial (GSVM) Medical College, Kanpur, India
| | - Saurabh Agarwal
- Multidisciplinary Research Unit, Department of Health Research, Ganesh Shankar Vidyarthi Memorial (GSVM) Medical College, Kanpur, India
- Kamlapat Singhania (KPS) Institute of Medicine, Ganesh Shankar Vidyarthi Memorial (GSVM) Medical College, Kanpur, India
| | - Sanjay Kala
- Department of Surgery, Ganesh Shankar Vidyarthi Memorial (GSVM) Medical College, Kanpur, India
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Sorkin JA, Rechany Z, Almog M, Dietzmeyer N, Shapira Y, Haastert-Talini K, Rochkind S. A Rabbit Model for Peripheral Nerve Reconstruction Studies Avoiding Automutilation Behavior. J Brachial Plex Peripher Nerve Inj 2022; 17:e22-e29. [PMID: 35747584 PMCID: PMC9213117 DOI: 10.1055/s-0042-1747959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 06/08/2021] [Indexed: 12/01/2022] Open
Abstract
Background
The rabbit sciatic nerve injury model may represent a valuable alternative for critical gap distance seen in humans but often leads to automutilation. In this study, we modified the complete sciatic nerve injury model for avoiding autophagy.
Materials and Methods
In 20 adult female New Zealand White rabbits, instead of transecting the complete sciatic nerve, we unilaterally transected the tibial portion and preserved the peroneal portion. Thereby loss of sensation in the dorsal aspect of the paw was avoided. The tibial portion was repaired in a reversed autograft approach in a length of 2.6 cm. In an alternative repair approach, a gap of 2.6 cm in length was repaired with a chitosan-based nerve guide.
Results
During the 6-month follow-up period, there were no incidents of autotomy. Nerve regeneration of the tibial portion of the sciatic nerve was evaluated histologically and morphometrically. A clear difference between the distal segments of the healthy contralateral and the repaired tibial portion of the sciatic nerve was detectable, validating the model.
Conclusion
By transecting the isolated tibial portion of the rabbit sciatic nerve and leaving the peroneal portion intact, it was possible to eliminate automutilation behavior.
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Affiliation(s)
- Jonathan A Sorkin
- Research Center for Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ziv Rechany
- Research Center for Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Mara Almog
- Research Center for Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Nina Dietzmeyer
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, Hannover, Germany.,Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Yuval Shapira
- Division of Peripheral Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Kirsten Haastert-Talini
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, Hannover, Germany.,Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Shimon Rochkind
- Research Center for Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Division of Peripheral Nerve Reconstruction, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
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12
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Development of a magnetically aligned regenerative tissue-engineered electronic nerve interface for peripheral nerve applications. Biomaterials 2021; 279:121212. [PMID: 34717196 DOI: 10.1016/j.biomaterials.2021.121212] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 10/11/2021] [Accepted: 10/20/2021] [Indexed: 01/18/2023]
Abstract
Peripheral nerve injuries can be debilitating to motor and sensory function, with severe cases often resulting in complete limb amputation. Over the past two decades, prosthetic limb technology has rapidly advanced to provide users with crude motor control of up to 20° of freedom; however, the nerve-interfacing technology required to provide high movement selectivity has not progressed at the same rate. The work presented here focuses on the development of a magnetically aligned regenerative tissue-engineered electronic nerve interface (MARTEENI) that combines polyimide "threads" encapsulated within a magnetically aligned hydrogel scaffold. The technology exploits tissue-engineered strategies to address concerns over traditional peripheral nerve interfaces including poor axonal sampling through the nerve and rigid substrates. A magnetically templated hydrogel is used to physically support the polyimide threads while also promoting regeneration in close proximity to the electrode sites on the polyimide. This work demonstrates the utility of magnetic templating for use in tuning the mechanical properties of hydrogel scaffolds to match the stiffness of native nerve tissue while providing an aligned substrate for Schwann cell migration in vitro. MARTEENI devices were fabricated and implanted within a 5-mm-long rat sciatic-nerve transection model to assess regeneration at 6 and 12 weeks. MARTEENI devices do not disrupt tissue remodeling and show axon densities equivalent to fresh tissue controls around the polyimide substrates. Devices are observed to have attenuated foreign-body responses around the polyimide threads. It is expected that future studies with functional MARTEENI devices will be able to record and stimulate single axons with high selectivity and low stimulation regimes.
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13
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de Lima GG, Júnior ELDS, Aggio BB, Shee BS, Filho EMDM, Segundo FADS, Fournet MB, Devine DM, Magalhães WLE, de Sá MJC. Nanocellulose for peripheral nerve regeneration in rabbits using citric acid as crosslinker with chitosan and freeze/thawed PVA. Biomed Mater 2021; 16. [PMID: 34330112 DOI: 10.1088/1748-605x/ac199b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/30/2021] [Indexed: 12/12/2022]
Abstract
This work investigates peripheral nerve regeneration using membranes consisting of pure chitosan (CHI), which was further blended with nanofibrillated cellulose, with citric acid as crosslinker, with posterior addition of polyvinyl alcohol, with subsequent freeze thawing. Nanocellulose improves the mechanical and thermal resistance, as well as flexibility of the film, which is ideal for the surgical procedure. The hydrogel presented a slow rate of swelling, which is adequate for cell and drug delivery. A series ofin vitrotests revealed to be non-toxic for neuronal Schwann cell from the peripheral nervous system of Rattus norvegicus, while there was a slight increase in toxicity if crosslink is performed-freeze-thaw. Thein vivoresults, using rabbits with a 5 mm gap nerve defect, revealed that even though pure CHI was able to regenerate the nerve, it did not present functional recovery with only the deep pain attribute being regenerated. When autologous implant was used jointly with the biomaterial membrane, as a covering agent, it revealed a functional recovery within 15 d when cellulose and the hydrogel were introduced, which was attributed to the film charge interaction that may help influence the neuronal axons growth into correct locations. Thus, indicating that this system presents ideal regeneration as nerve conduits.
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Affiliation(s)
- Gabriel G de Lima
- Programa de Pós-Graduação em Engenharia e Ciência dos Materiais-PIPE, Universidade Federal do Paraná, Curitiba, PR, Brazil.,Materials Research Institute, Athlone Institute of Technology, Athlone, Ireland
| | - Emílio L de S Júnior
- Programa de Pós-Graduação em Medicina Veterinária-PPGMV, Universidade Federal de Campina Grande, Campina Grande PB, Brazil
| | - Bruno B Aggio
- Departamento de Química, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Bor Shin Shee
- Materials Research Institute, Athlone Institute of Technology, Athlone, Ireland
| | - Emanuel M de M Filho
- Programa de Pós-Graduação em Medicina Veterinária-PPGMV, Universidade Federal de Campina Grande, Campina Grande PB, Brazil
| | - Francisco A de S Segundo
- Programa de Pós-Graduação em Medicina Veterinária-PPGMV, Universidade Federal de Campina Grande, Campina Grande PB, Brazil
| | - Margaret B Fournet
- Materials Research Institute, Athlone Institute of Technology, Athlone, Ireland
| | - Declan M Devine
- Materials Research Institute, Athlone Institute of Technology, Athlone, Ireland
| | - Washington L E Magalhães
- Programa de Pós-Graduação em Engenharia e Ciência dos Materiais-PIPE, Universidade Federal do Paraná, Curitiba, PR, Brazil.,Embrapa Florestas, Colombo, Brazil
| | - Marcelo J C de Sá
- Programa de Pós-Graduação em Engenharia e Ciência dos Materiais-PIPE, Universidade Federal do Paraná, Curitiba, PR, Brazil.,Programa de Pós-Graduação em Medicina Veterinária-PPGMV, Universidade Federal de Campina Grande, Campina Grande PB, Brazil
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14
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Rochkind S, Almog M, Meilin S, Nevo Z. Reviving Matrix for Nerve Reconstruction in Rabbit Model of Chronic Peripheral Nerve Injury With Massive Loss Defect. Front Surg 2021; 7:609638. [PMID: 33521046 PMCID: PMC7844361 DOI: 10.3389/fsurg.2020.609638] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 11/24/2020] [Indexed: 01/09/2023] Open
Abstract
Background and Aims: The aim of this study was to investigate the innovative guiding regenerative gel (GRG) and antigliotic GRG (AGRG) fillings for nerve conduits, prepared with Food and Drug Administration (FDA)-approved agents and expected to provide an alternative to autologous nerve graft and to enable reconnection of massive nerve gaps in a rabbit model of chronic peripheral nerve injury with massive loss defect that simulates the human condition of chronic injury with a large gap. Methods: The components and dosimetry for GRG and AGRG formulations were investigated in vitro on nerve cell culture and in vivo on 10-mm reconstructed sciatic nerves of 72 rats using different concentrations of agents and completed on a rabbit model of delayed (chronic) complete peripheral nerve injury with a 25-mm gap. Forty rabbits underwent delayed (9 weeks after complete injury of the tibial portion of the sciatic nerve) nerve tube reconstruction of a gap that is 25 mm long. GRG and AGRG groups were compared with autologous and empty tube reconstructed groups. Rats and rabbits underwent electrophysiological and histochemical assessments (19 weeks for rats and 40 weeks for rabbits). Results: Application of AGRG showed a significant increase of about 78% in neurite length per cell and was shown to have the most promising effect on neuronal outgrowth, with total number of neurites increasing by 4-fold. The electrophysiological follow-up showed that AGRG treatment is most promising for the reconstruction of the tibial portion of the sciatic nerve with a critical gap of 25 mm. The beneficial effect of AGRG was found when compared with the autologous nerve graft reconstruction. Thirty-one weeks post the second surgery (delayed reconstruction), histochemical observation showed significant regeneration after using AGRG neurogel, compared with the empty tube, and succeeded in significantly regenerating the nerve, as well as the autologous nerve graft, which was almost similar to a healthy nerve. Conclusion: We demonstrate that in the model of delayed peripheral nerve repair with massive loss defect, the application of AGRG led to a stronger nerve recovery and can be an alternative to autologous nerve graft.
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Affiliation(s)
- Shimon Rochkind
- Research Center for Nerve Reconstruction, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mara Almog
- Research Center for Nerve Reconstruction, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sigal Meilin
- Neurology R&D Division, MD Biosciences, Ness Ziona, Israel
| | - Zvi Nevo
- Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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15
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Wang JP, Liao YT, Wu SH, Chiang ER, Hsu SH, Tseng TC, Hung SC. Mesenchymal stem cells from a hypoxic culture improve nerve regeneration. J Tissue Eng Regen Med 2020; 14:1804-1814. [PMID: 32976700 DOI: 10.1002/term.3136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/27/2020] [Accepted: 09/10/2020] [Indexed: 12/31/2022]
Abstract
Repairing the peripheral nerves following a segmental defect injury remains surgically challenging. Because of some disadvantages of nerve grafts, nerve regeneration, such as conduits combined with bone marrow-derived mesenchymal stem cells (BMSCs), may serve as an alternative. BMSCs expand under hypoxic conditions, decrease in senescence, and increase in proliferation and differentiation potential into the bone, fat, and cartilage. The purpose of this study was to investigate whether BMSCs increased the neuronal differentiation potential following expansion under hypoxic conditions. Isolated human BMSCs (hBMSCs) expand under hypoxia or normoxia, and neuronal differentiation proceeds under normoxia. in vitro tests revealed hypoxia culture enhanced the RNA and protein expression of neuronal markers. The electrophysiology of hBMSC-differentiated neuron-like cells was also enhanced by the hypoxia culturing. Our animal model indicated that the potential treatment of hypoxic rat BMSCs (rBMSCs) was better than that of normoxic rBMSCs because the conduit with the hypoxic rBMSCs injection demonstrated the highest recovery rate of gastrocnemius muscle weights. There were more toluidine blue-stained myelinated nerve fibers in the hypoxic rBMSCs group than in the normoxic group. To sum up, BMSCs cultured under hypoxia increased the potential of neuronal differentiation both in vivo and in vitro.
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Affiliation(s)
- Jung-Pan Wang
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yu-Ting Liao
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Szu-Hsien Wu
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Plastic and Reconstructive Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
| | - En-Rung Chiang
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Ting-Chen Tseng
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Shih-Chieh Hung
- Graduate Institute of New Drug Development, Biomedical Sciences, China Medical University, Taichung, Taiwan
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16
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Su H, Xu F, Sun H, Fu X, Zhao Y. Preparation and Evaluation of BDNF Composite Conduits for Regeneration of Sciatic Nerve Defect in Rats. J Pharm Sci 2020; 109:2189-2195. [DOI: 10.1016/j.xphs.2020.03.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 02/22/2020] [Accepted: 03/17/2020] [Indexed: 01/10/2023]
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17
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Wang Y, Zhang Y, Li X, Zhang Q. The progress of biomaterials in peripheral nerve repair and regeneration. JOURNAL OF NEURORESTORATOLOGY 2020. [DOI: 10.26599/jnr.2020.9040022] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Repair and regeneration of the injured peripheral nerve (PN) is a challenging issue in clinics. Although the regeneration outcome of large PN defects is currently unsatisfactory, recently, the study of PN repair has considerably progressed. In particular, biomaterials for repairing PNs, such as nerve guidance conduits and nerve repair membranes, have been well developed. Herein, we summarize the anatomy of the PN, the pathophysiological features of the nerve injury, and the repair process post injury. Then, we highlight the progress in the development of natural and synthetic biomaterials and summarize the applications, advantages, and disadvantages of these materials. These materials can be used as nerve repair membranes and nerve conduits in the field of PN repair. Finally, we discuss the challenges encountered and development strategies for PN repair in the future.
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18
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Alike Y, Yushan M, Keremu A, Abulaiti A, Liu ZH, Fu W, Yan LW, Yusufu A, Zhu QT. Application of custom anatomy-based nerve conduits on rabbit sciatic nerve defects: in vitro and in vivo evaluations. Neural Regen Res 2019; 14:2173-2182. [PMID: 31397357 PMCID: PMC6788245 DOI: 10.4103/1673-5374.262601] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 05/11/2019] [Indexed: 11/16/2022] Open
Abstract
The intermingling of regenerated nerve fibers inside nerve grafts is the main reason for mismatched nerve fibers. This is one of the key factors affecting limb function recovery after nerve injury. Previous research has shown that the accuracy of axon regeneration can be improved by a bionic structural implant. To this aim, iodine and freeze-drying high-resolution micro-computed tomography was performed to visualize the 3D topography of the New Zealand rabbit sciatic nerve (25 mm). A series of 1-, 2-, 3-, and 4-custom anatomy-based nerve conduits (CANCs) were fabricated based on the anatomical structure of the nerve fascicle. The match index, luminal surface, and mechanical properties of CANCs were evaluated before implanting in a 10-mm gap of the sciatic nerve. Recovery was evaluated by histomorphometric analyses, electrophysiological study, gastrocnemius muscle weight recovery ratio, and behavioral assessments at 12 and 24 weeks postoperatively. The accuracy of nerve regeneration was determined by changes in fluorescence-labeled profile number during simultaneous retrograde tracing. Our results showed that the optimal preprocessing condition for high-resolution micro-computed tomography visualization was treatment of the sciatic nerve with 40% Lugol's solution for 3 days followed by lyophilization for 2 days. In vitro experiments demonstrated that the match index was highest in the 3-CANC group, followed by the 2-, 1-, and 4-CANC groups. The luminal surface was lowest in the 1-CANC group. Mechanical properties (transverse compressive and bending properties) were higher in the 3- and 4-CANC groups than in the 1-CANC group. In vivo experiments demonstrated that the recovery (morphology of regenerated fibers, compound muscle action potential, gastrocnemius muscle weight recovery ratio, pain-related autotomy behaviors, and range of motion) in the 3-CANC group was superior to the other CANC groups, and achieved the same therapeutic effect as the autograft. The simultaneous retrograde tracing results showed that the percentages of double-labeled profiles of the 2-, 3-, and 4-CANC groups were comparatively lower than that of the 1-CANC group, which indicates that regenerated nerve fascicles were less intermingled in the 2-, 3-, and 4-CANC groups. These findings demonstrate that the visualization of the rabbit sciatic nerve can be achieved by iodine and freeze-drying high-resolution micro-computed tomography, and that this method can be used to design CANCs with different channels that are based on the anatomical structure of the nerve. Compared with the 1-CANC, 3-CANC had a higher match index and luminal surface, and improved the accuracy of nerve regeneration by limiting the intermingling of the regenerated fascicles. All procedures were approved by the Animal Care and Use Committee, Xinjiang Medical University, China on April 4, 2017 (ethics approval No. IACUC20170315-02).
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Affiliation(s)
- Yamuhanmode Alike
- Department of Microrepair and Reconstruction, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Maimaiaili Yushan
- Department of Microrepair and Reconstruction, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Ajimu Keremu
- Orthopedic Center, the First People's Hospital of Kashgar, Kashi, Xinjiang Uygur Autonomous Region, China
| | - Alimujiang Abulaiti
- Department of Microrepair and Reconstruction, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Zhen-Hui Liu
- Department of Microrepair and Reconstruction, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Wei Fu
- Department of Microrepair and Reconstruction, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Li-Wei Yan
- Department of Microsurgery and Orthopedic Trauma, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Center for Peripheral Nerve Tissue Engineering and Technology Research, Guangzhou, Guangdong Province, China
- Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication, Guangzhou, Guangdong Province, China
| | - Aihemaitijiang Yusufu
- Department of Microrepair and Reconstruction, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Qing-Tang Zhu
- Department of Microsurgery and Orthopedic Trauma, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
- Center for Peripheral Nerve Tissue Engineering and Technology Research, Guangzhou, Guangdong Province, China
- Guangdong Province Engineering Laboratory for Soft Tissue Biofabrication, Guangzhou, Guangdong Province, China
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19
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Jahromi M, Razavi S, Bakhtiari A. The advances in nerve tissue engineering: From fabrication of nerve conduit to in vivo nerve regeneration assays. J Tissue Eng Regen Med 2019; 13:2077-2100. [PMID: 31350868 DOI: 10.1002/term.2945] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 07/09/2019] [Accepted: 07/12/2019] [Indexed: 12/14/2022]
Abstract
Peripheral nerve damage is a common clinical complication of traumatic injury occurring after accident, tumorous outgrowth, or surgical side effects. Although the new methods and biomaterials have been improved recently, regeneration of peripheral nerve gaps is still a challenge. These injuries affect the quality of life of the patients negatively. In the recent years, many efforts have been made to develop innovative nerve tissue engineering approaches aiming to improve peripheral nerve treatment following nerve injuries. Herein, we will not only outline what we know about the peripheral nerve regeneration but also offer our insight regarding the types of nerve conduits, their fabrication process, and factors associated with conduits as well as types of animal and nerve models for evaluating conduit function. Finally, nerve regeneration in a rat sciatic nerve injury model by nerve conduits has been considered, and the main aspects that may affect the preclinical outcome have been discussed.
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Affiliation(s)
- Maliheh Jahromi
- Department of Anatomical Science, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shahnaz Razavi
- Department of Anatomical Science, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Abbas Bakhtiari
- Department of Anatomical Science, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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20
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Molina BG, Cuesta S, Besharatloo H, Roa JJ, Armelin E, Alemán C. Free-Standing Faradaic Motors Based on Biocompatible Nanoperforated Poly(lactic Acid) Layers and Electropolymerized Poly(3,4-ethylenedioxythiophene). ACS APPLIED MATERIALS & INTERFACES 2019; 11:29427-29435. [PMID: 31313896 DOI: 10.1021/acsami.9b08678] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The electro-chemo-mechanical response of robust and flexible free-standing films made of three nanoperforated poly(lactic acid) (pPLA) layers separated by two anodically polymerized poly(3,4-ethylenedioxythiophene) (PEDOT) layers has been demonstrated. The mechanical and electrochemical properties of these films, which are provided by pPLA and PEDOT, respectively, have been studied by nanoindentation, cyclic voltammetry, and galvanostatic charge-discharge assays. The unprecedented combination of properties obtained for this system is appropriated for its utilization as a Faradaic motor, also named artificial muscle. Application of square potential waves has shown important bending movements in the films, which can be repeated for more than 500 cycles without damaging its mechanical integrity. Furthermore, the actuator is able to push a huge amount of mass, as it has been proved by increasing the mass of the passive pPLA up to 328% while keeping the mass of electroactive PEDOT unaltered.
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Affiliation(s)
- Brenda G Molina
- Departament d'Enginyeria Química, EEBE , Universitat Politécnica de Catalunya , C/Eduard Maristany 10-14, Ed. I2 , 08019 Barcelona , Spain
- Barcelona Research Center for Multiscale Science and Engineering , Universitat Politècnica de Catalunya , Eduard Maristany 10-14 , 08019 Barcelona , Spain
| | - Sergi Cuesta
- Departament d'Enginyeria Química, EEBE , Universitat Politécnica de Catalunya , C/Eduard Maristany 10-14, Ed. I2 , 08019 Barcelona , Spain
- Barcelona Research Center for Multiscale Science and Engineering , Universitat Politècnica de Catalunya , Eduard Maristany 10-14 , 08019 Barcelona , Spain
| | - Hossein Besharatloo
- Barcelona Research Center for Multiscale Science and Engineering , Universitat Politècnica de Catalunya , Eduard Maristany 10-14 , 08019 Barcelona , Spain
- CIEFMA-Departament de Ciència dels Materials i Eng. Metal·lúrgica , Universitat Politècnica de Catalunya , Eduard Maristany 10-14, Ed. I , 08019 Barcelona , Spain
| | - Joan Josep Roa
- Barcelona Research Center for Multiscale Science and Engineering , Universitat Politècnica de Catalunya , Eduard Maristany 10-14 , 08019 Barcelona , Spain
- CIEFMA-Departament de Ciència dels Materials i Eng. Metal·lúrgica , Universitat Politècnica de Catalunya , Eduard Maristany 10-14, Ed. I , 08019 Barcelona , Spain
| | - Elaine Armelin
- Departament d'Enginyeria Química, EEBE , Universitat Politécnica de Catalunya , C/Eduard Maristany 10-14, Ed. I2 , 08019 Barcelona , Spain
- Barcelona Research Center for Multiscale Science and Engineering , Universitat Politècnica de Catalunya , Eduard Maristany 10-14 , 08019 Barcelona , Spain
| | - Carlos Alemán
- Departament d'Enginyeria Química, EEBE , Universitat Politécnica de Catalunya , C/Eduard Maristany 10-14, Ed. I2 , 08019 Barcelona , Spain
- Barcelona Research Center for Multiscale Science and Engineering , Universitat Politècnica de Catalunya , Eduard Maristany 10-14 , 08019 Barcelona , Spain
- Institute for Bioengineering of Catalonia (IBEC) , The Barcelona Institute of Science and Technology , Baldiri Reixac 10-12 , 08028 Barcelona , Spain
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21
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Chronopoulou L, Domenici F, Giantulli S, Brasili F, D'Errico C, Tsaouli G, Tortorella E, Bordi F, Morrone S, Palocci C, Silvestri I. PLGA based particles as "drug reservoir" for antitumor drug delivery: characterization and cytotoxicity studies. Colloids Surf B Biointerfaces 2019; 180:495-502. [PMID: 31103709 DOI: 10.1016/j.colsurfb.2019.05.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 05/05/2019] [Accepted: 05/06/2019] [Indexed: 12/16/2022]
Abstract
Doxorubicin (DOX) is commonly used to treat several tumor types, but its severe side effects, primarily cardiotoxicity, represent a major limitation for its use in clinical settings. In this study we developed and characterized biodegradable and stable poly(D,L-lactic-co-glycolic) acid (PLGA) submicrocarriers employing an osmosis-based patented methodology, which allowed to optimize the drug loading efficiency up to 99%. Proceeding from this, we evaluated on MCF-7, a human breast cancer cell line, the ability of PLGA to promote the internalization of DOX and to improve its cytotoxicity in vitro. We found that the in vitro uptake efficiency is dramatically increased when DOX is loaded within PLGA colloidal carriers, which adhere to the cell membrane behaving as an efficient drug reservoir. In fact, the particles provide a diffusion-driven, sustained release of DOX across the cell membrane, resulting in high drug concentration. Accordingly, the cytotoxic analysis clearly showed that DOX-loaded PLGA exhibit a lower 50% inhibitory concentration than free DOX. The decay time of cell viability was successfully compared with DOX diffusion time constant from PLGA. The overall in vitro results highlight the potential of DOX-loaded PLGA particles to be employed as vectors with improved antitumor efficacy.
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Affiliation(s)
- Laura Chronopoulou
- Department of Chemistry , Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Fabio Domenici
- Department of Physics, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy; Department of Chemical Science and Technology, University of Rome Tor Vergata, Viale della ricerca scientifica 1, 00133, Rome, Italy.
| | - Sabrina Giantulli
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Francesco Brasili
- Department of Physics, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy; Department of Chemical Science and Technology, University of Rome Tor Vergata, Viale della ricerca scientifica 1, 00133, Rome, Italy
| | - Chiara D'Errico
- Department of Chemistry , Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Georgia Tsaouli
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Elisabetta Tortorella
- Department of Chemical Science and Technology, University of Rome Tor Vergata, Viale della ricerca scientifica 1, 00133, Rome, Italy
| | - Federico Bordi
- Department of Physics, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Stefania Morrone
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Cleofe Palocci
- Department of Chemistry , Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - Ida Silvestri
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy.
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22
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Gold nanorods reinforced silk fibroin nanocomposite for peripheral nerve tissue engineering applications. Int J Biol Macromol 2019; 129:1034-1039. [PMID: 30742919 DOI: 10.1016/j.ijbiomac.2019.02.050] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 01/24/2019] [Accepted: 02/06/2019] [Indexed: 01/02/2023]
Abstract
Nowadays, regenerating peripheral nerves injuries (PNIs) remain a major clinical challenge, which has gained a great attention between scientists. Here, we represent a nanocomposite based on silk fibroin reinforced gold nanorods (SF/GNRs) to evaluate the proliferation and attachment of PC12 cells. The morphological characterization of nanocomposites with transmission electron microscopy (TEM) and Scanning electron microscopy (SEM) showed that the fabricated scaffolds have porous structure with interconnected pores that is suitable for cell adhesion and growth. GNRs significantly improved the poor electrical conductivity of bulk silk fibroin scaffold. Evaluating the morphology of PC12 cells on the scaffold also confirmed the normal morphology of cells with good rate of adhesion. SF/GNRs nanocomposites showed better cellular attachment, growth and proliferation without any toxicity compared with bulk SF scaffold. Moreover, immunostaining studies represented the overexpression of neural specific proteins like nestin and neuron specific enolase (NSE) in the cells cultured on SF/GNRs nanocomposites in comparison to neat SF scaffolds.
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23
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Sahar MSU, Barton M, Tansley GD. Bridging larger gaps in peripheral nerves using neural prosthetics and physical therapeutic agents. Neural Regen Res 2019; 14:1109-1115. [PMID: 30804232 PMCID: PMC6425823 DOI: 10.4103/1673-5374.251186] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Peripheral nerve injuries are relatively common and can be caused by a variety of traumatic events such as motor vehicle accidents. They can lead to long-term disability, pain, and financial burden, and contribute to poor quality of life. In this review, we systematically analyze the contemporary literature on peripheral nerve gap management using nerve prostheses in conjunction with physical therapeutic agents. The use of nerve prostheses to assist nerve regeneration across large gaps (> 30 mm) has revolutionized neural surgery. The materials used for nerve prostheses have been greatly refined, making them suitable for repairing large nerve gaps. However, research on peripheral nerve gap management using nerve prostheses reports inconsistent functional outcomes, especially when prostheses are integrated with physical therapeutic agents, and thus warrants careful investigation. This review explores the effectiveness of nerve prostheses for bridging large nerve gaps and then addresses their use in combination with physical therapeutic agents.
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Affiliation(s)
| | - Matthew Barton
- Clem Jones Centre for Neurobiology and Stem Cell Therapies, Griffith University, Gold Coast, Queensland, Australia
| | - Geoffrey Douglas Tansley
- School of Engineering and Built Environment, Griffith University, Gold Coast, Queensland, Australia
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24
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Cacciotti I, Chronopoulou L, Palocci C, Amalfitano A, Cantiani M, Cordaro M, Lajolo C, Callà C, Boninsegna A, Lucchetti D, Gallenzi P, Sgambato A, Nocca G, Arcovito A. Controlled release of 18-β-glycyrrhetic acid by nanodelivery systems increases cytotoxicity on oral carcinoma cell line. NANOTECHNOLOGY 2018; 29:285101. [PMID: 29664420 DOI: 10.1088/1361-6528/aabecc] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The topical treatment for oral mucosal diseases is often based on products optimized for dermatologic applications; consequently, a lower therapeutic effect may be present. 18-β-glycyrrhetic acid (GA) is extracted from Glycirrhiza glabra. The first aim of this study was to test the cytotoxicity of GA on PE/CA-PJ15 cells. The second aim was to propose and test two different delivery systems, i.e. nanoparticles and fibers, to guarantee a controlled release of GA in vitro. We used chitosan and poly(lactic-co-glycolic) acid based nanoparticles and polylactic acid fibers. We tested both delivery systems in vitro on PE/CA-PJ15 cells and on normal human gingival fibroblasts (HGFs). The morphology of GA-loaded nanoparticles (GA-NPs) and fibers (GA-FBs) was investigated by electron microscopy and dynamic light scattering; GA release kinetics was studied spectrophotometrically. MTT test was used to assess GA cytotoxicity on both cancer and normal cells. Cells were exposed to different concentrations of GA (20-500 μmol l-1) administered as free GA (GA-f), and to GA-NPs or GA-FBs. ROS production was evaluated using dichlorodihydrofluorescein as a fluorescent probe. Regarding the cytotoxic effect of GA on PE/CA-PJ15 cells, the lowest TC50 value was 200 μmol l-1 when GA was added as GA-NPs. No cytotoxic effects were observed when GA was administered to HGFs. N-acetyl Cysteine reduced mortality induced by GA-f in PE/CA-PJ15 cells. The specific effect of GA on PE/CA-PJ15 cells is mainly due to the different sensitivity of cancer cells to ROS over-production; GA-NPs and GA-FBs formulations increase, in vitro, this toxic effect on oral cancer cells.
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Affiliation(s)
- Ilaria Cacciotti
- Department of Engineering, University of Rome Niccolò Cusano, Via don Carlo Gnocchi 3, Roma, Italy
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25
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Wu Y, Ranjan VD, Zhang Y. A Living 3D In Vitro Neuronal Network Cultured inside Hollow Electrospun Microfibers. ACTA ACUST UNITED AC 2018; 2:e1700218. [DOI: 10.1002/adbi.201700218] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/20/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Yingjie Wu
- School of Mechanical and Aerospace Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
| | - Vivek Damodar Ranjan
- School of Mechanical and Aerospace Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
| | - Yilei Zhang
- School of Mechanical and Aerospace Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
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26
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Sarker M, Naghieh S, McInnes AD, Schreyer DJ, Chen X. Strategic Design and Fabrication of Nerve Guidance Conduits for Peripheral Nerve Regeneration. Biotechnol J 2018; 13:e1700635. [PMID: 29396994 DOI: 10.1002/biot.201700635] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 01/25/2018] [Indexed: 12/23/2022]
Abstract
Nerve guidance conduits (NGCs) have been drawing considerable attention as an aid to promote regeneration of injured axons across damaged peripheral nerves. Ideally, NGCs should include physical and topographic axon guidance cues embedded as part of their composition. Over the past decades, much progress has been made in the development of NGCs that promote directional axonal regrowth so as to repair severed nerves. This paper briefly reviews the recent designs and fabrication techniques of NGCs for peripheral nerve regeneration. Studies associated with versatile design and preparation of NGCs fabricated with either conventional or rapid prototyping (RP) techniques have been examined and reviewed. The effect of topographic features of the filler material as well as porous structure of NGCs on axonal regeneration has also been examined from the previous studies. While such strategies as macroscale channels, lumen size, groove geometry, use of hydrogel/matrix, and unidirectional freeze-dried surface are seen to promote nerve regeneration, shortcomings such as axonal dispersion and wrong target reinnervation still remain unsolved. On this basis, future research directions are identified and discussed.
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Affiliation(s)
- Md Sarker
- Division of Biomedical Engineering College of Engineering University of Saskatchewan, 57 campus drive, SK S7N 5A9, Saskatoon, SK, Canada
| | - Saman Naghieh
- Division of Biomedical Engineering College of Engineering University of Saskatchewan, 57 campus drive, SK S7N 5A9, Saskatoon, SK, Canada
| | - Adam D McInnes
- Division of Biomedical Engineering College of Engineering University of Saskatchewan, 57 campus drive, SK S7N 5A9, Saskatoon, SK, Canada
| | - David J Schreyer
- Department of Anatomy and Cell Biology College of Medicine University of Saskatchewan, Saskatoon, SK S7N 5A2, Canada
| | - Xiongbiao Chen
- Division of Biomedical Engineering College of Engineering University of Saskatchewan, 57 campus drive, SK S7N 5A9, Saskatoon, SK, Canada.,Department of Mechanical Engineering College of Engineering University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada
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27
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Domingues RCC, Pereira CC, Borges CP. Effect of stereoisomerism of poly(lactic acid) during neural guide conduit membrane synthesis. J Appl Polym Sci 2018. [DOI: 10.1002/app.46190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rui Carlos Castro Domingues
- COPPE/Chemical Engineering Program; Federal University of Rio de Janeiro, P.O. Box 68502; Rio de Janeiro 21945-970 Brazil
| | - Cristina Cardoso Pereira
- COPPE/Chemical Engineering Program; Federal University of Rio de Janeiro, P.O. Box 68502; Rio de Janeiro 21945-970 Brazil
| | - Cristiano Piacsek Borges
- COPPE/Chemical Engineering Program; Federal University of Rio de Janeiro, P.O. Box 68502; Rio de Janeiro 21945-970 Brazil
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28
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Zhao Y, Zhang Q, Zhao L, Gan L, Yi L, Zhao Y, Xue J, Luo L, Du Q, Geng R, Sun Z, Benkirane-Jessel N, Chen P, Li Y, Chen Y. Enhanced Peripheral Nerve Regeneration by a High Surface Area to Volume Ratio of Nerve Conduits Fabricated from Hydroxyethyl Cellulose/Soy Protein Composite Sponges. ACS OMEGA 2017; 2:7471-7481. [PMID: 30023554 PMCID: PMC6044839 DOI: 10.1021/acsomega.7b01003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 10/19/2017] [Indexed: 05/05/2023]
Abstract
Multichannel nerve guide conduits (MCNGCs) have been widely studied and exhibited outstanding nerve repair function. However, the effect of the geometric structure of MCNGCs on the nerve repair function was still not clear. Herein, we postulated that MCNGCs with different inner surface area-to-volume ratios (ISA/V) of the channels inside the nerve guide conduits (NGCs) would show different nerve repair functions. Therefore, in current work, we constructed a series of hydroxyethyl cellulose/soy protein sponge-based nerve conduit (HSSN) with low, medium, and high ISA/V from hydroxyethyl cellulose (HEC)/soy protein isolate (SPI) composite sponges, which were abbreviated as HSSN-L, HSSN-M and HSSN-H, respectively. These NGCs were applied to bridge and repair a 10 mm long sciatic nerve defect in a rat model. Finally, the influence of ISA/V on nerve repair function was evaluated by electrophysiological assessment, histological investigation, and in vivo biodegradability testing. The results of electrophysiological assessment and histological investigation showed that the regenerative nerve tissues bridged with HSSN-H and HSSN-M had higher compound muscle action potential amplitude ratio, higher percentage of positive NF200 and S100 staining, larger axon diameter, lower G-ratio, and greater myelination thickness. Furthermore, the regenerative nerve tissues bridged with HSSN-H also showed higher density of regenerated myelinated nerve fibers and more number of myelin sheath layers. On the whole, the repair efficiency of the peripheral nerve in HSSN-H and HSSN-M groups might be better than that in HSSN-L. These results indicated that higher ISA/V based on HEC/SPI composite sponge may result in greater nerve repair functions. The conclusion provided a probable guiding principle for the structural designs of NGCs in the future.
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Affiliation(s)
- Yanteng Zhao
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
- Department
of Transfusion, The First Affiliated Hospital
of Zhengzhou University, Zhengzhou 450052, China
| | - Qiang Zhang
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Lei Zhao
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Li Gan
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
- Department
of Cell Biology, School of Medicine, Wuhan
University of Science and Technology, Wuhan 430065, China
| | - Li Yi
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Yanan Zhao
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Jingling Xue
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Lihua Luo
- Laboratory
of Stem Cells and Tissue Engineering, School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China
| | - Qiaoyue Du
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Rongxin Geng
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Zhihong Sun
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Nadia Benkirane-Jessel
- INSERM
(French National Institute of Health and Medical Research), Osteoarticular
and Dental Regenerative Nanomedicine Laboratory, UMR 1109, Faculté
de Médecine, Strasbourg F-67000, France
- Université
de Strasbourg, Faculté de Chirurgie Dentaire, 1 place de l’Hôpital, Strasbourg F-67000, France
| | - Pu Chen
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
| | - Yinping Li
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
- E-mail: (Y.L.)
| | - Yun Chen
- Department
of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China
- E-mail: (Y.C.)
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29
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Liu Z, Zhu S, Liu L, Ge J, Huang L, Sun Z, Zeng W, Huang J, Luo Z. A magnetically responsive nanocomposite scaffold combined with Schwann cells promotes sciatic nerve regeneration upon exposure to magnetic field. Int J Nanomedicine 2017; 12:7815-7832. [PMID: 29123395 PMCID: PMC5661463 DOI: 10.2147/ijn.s144715] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Peripheral nerve repair is still challenging for surgeons. Autologous nerve transplantation is the acknowledged therapy; however, its application is limited by the scarcity of available donor nerves, donor area morbidity, and neuroma formation. Biomaterials for engineering artificial nerves, particularly materials combined with supportive cells, display remarkable promising prospects. Schwann cells (SCs) are the absorbing seeding cells in peripheral nerve engineering repair; however, the attenuated biologic activity restricts their application. In this study, a magnetic nanocomposite scaffold fabricated from magnetic nanoparticles and a biodegradable chitosan-glycerophosphate polymer was made. Its structure was evaluated and characterized. The combined effects of magnetic scaffold (MG) with an applied magnetic field (MF) on the viability of SCs and peripheral nerve injury repair were investigated. The magnetic nanocomposite scaffold showed tunable magnetization and degradation rate. The MGs synergized with the applied MF to enhance the viability of SCs after transplantation. Furthermore, nerve regeneration and functional recovery were promoted by the synergism of SCs-loaded MGs and MF. Based on the current findings, the combined application of MGs and SCs with applied MF is a promising therapy for the engineering of peripheral nerve regeneration.
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Affiliation(s)
- Zhongyang Liu
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Shu Zhu
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Liang Liu
- Department of Orthopedics, No 161 Hospital of PLA, Wuhan, Hubei
| | - Jun Ge
- Department of Orthopedics, No 323 Hospital of PLA, Xi’an, Shaanxi
- Department of Anatomy, Fourth Military Medical University, Xi’an, Shaanxi
| | - Liangliang Huang
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Zhen Sun
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Wen Zeng
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi’an, Shaanxi, People’s Republic of China
| | - Jinghui Huang
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
| | - Zhuojing Luo
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi
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30
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Domingues RCC, Pereira CC, Borges CP. Morphological control and properties of poly(lactic acid) hollow fibers for biomedical applications. J Appl Polym Sci 2017. [DOI: 10.1002/app.45494] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Rui Carlos Castro Domingues
- Chemical Engineering Program, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering (COPPE); Federal University of Rio de Janeiro; P.O. Box 68502, Rio de Janeiro 21945-970 Brazil
| | - Cristina Cardoso Pereira
- Chemical Engineering Program, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering (COPPE); Federal University of Rio de Janeiro; P.O. Box 68502, Rio de Janeiro 21945-970 Brazil
| | - Cristiano Piacsek Borges
- Chemical Engineering Program, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering (COPPE); Federal University of Rio de Janeiro; P.O. Box 68502, Rio de Janeiro 21945-970 Brazil
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31
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A 3D-engineered porous conduit for peripheral nerve repair. Sci Rep 2017; 7:46038. [PMID: 28401914 PMCID: PMC5388843 DOI: 10.1038/srep46038] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 03/08/2017] [Indexed: 02/07/2023] Open
Abstract
End-to-end neurorrhaphy is the most commonly used method for treating peripheral nerve injury. However, only 50% of patients can regain useful function after treating with neurorrhaphy. Here, we constructed a 3D-engineered porous conduit to promote the function recovery of the transected peripheral nerve after neurorrhaphy. The conduit that consisted of a gelatin cryogel was prepared by molding with 3D-printed moulds. Due to its porous structure and excellent mechanical properties, this conduit could be collapsed by the mechanical force and resumed its original shape after absorption of normal saline. This shape-memory property allowed a simply surgery process for installing the conduits. Moreover, the biodegradable conduit could prevent the infiltration of fibroblasts and reduce the risk of scar tissue, which could provide an advantageous environment for nerve regeneration. The efficiency of the conduits in assisting peripheral nerve regeneration after neurorrhaphy was evaluated in a rat sciatic nerve transected model. Results indicated that conduits significantly benefitted the recovery of the transected peripheral nerve after end-to-end neurorrhaphy on the static sciatic index (SSI), electrophysiological results and the re-innervation of the gastrocnemius muscle. This work demonstrates a biodegradable nerve conduit that has potentially clinical application in promoting the neurorrhaphy.
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32
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Role of Demyelination Efficiency within Acellular Nerve Scaffolds during Nerve Regeneration across Peripheral Defects. BIOMED RESEARCH INTERNATIONAL 2017; 2017:4606387. [PMID: 28421195 PMCID: PMC5379125 DOI: 10.1155/2017/4606387] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/20/2017] [Accepted: 01/29/2017] [Indexed: 11/17/2022]
Abstract
Hudson's optimized chemical processing method is the most commonly used chemical method to prepare acellular nerve scaffolds for the reconstruction of large peripheral nerve defects. However, residual myelin attached to the basal laminar tube has been observed in acellular nerve scaffolds prepared using Hudson's method. Here, we describe a novel method of producing acellular nerve scaffolds that eliminates residual myelin more effectively than Hudson's method through the use of various detergent combinations of sulfobetaine-10, sulfobetaine-16, Triton X-200, sodium deoxycholate, and peracetic acid. In addition, the efficacy of this new scaffold in repairing a 1.5 cm defect in the sciatic nerve of rats was examined. The modified method produced a higher degree of demyelination than Hudson's method, resulting in a minor host immune response in vivo and providing an improved environment for nerve regeneration and, consequently, better functional recovery. A morphological study showed that the number of regenerated axons in the modified group and Hudson group did not differ. However, the autograft and modified groups were more similar in myelin sheath regeneration than the autograft and Hudson groups. These results suggest that the modified method for producing a demyelinated acellular scaffold may aid functional recovery in general after nerve defects.
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33
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Hsu SH, Chang WC, Yen CT. Novel flexible nerve conduits made of water-based biodegradable polyurethane
for peripheral nerve regeneration. J Biomed Mater Res A 2017; 105:1383-1392. [DOI: 10.1002/jbm.a.36022] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/20/2017] [Accepted: 01/26/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Shan-hui Hsu
- Institute of Polymer Science and Engineering; National Taiwan University; Taipei Taiwan
| | - Wen-Chi Chang
- Institute of Polymer Science and Engineering; National Taiwan University; Taipei Taiwan
| | - Chen-Tung Yen
- Department of Life Science and Institute of Zoology; National Taiwan University; Taipei Taiwan
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34
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Öztatlı H, Ege D. Physical and Chemical Properties of Poly (l-lactic acid)/Graphene Oxide Nanofibers for Nerve Regeneration. ACTA ACUST UNITED AC 2016. [DOI: 10.1557/adv.2016.663] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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35
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Abstract
Tissue engineering aims to repair the damaged tissue by transplantation of cells or introducing bioactive factors in a biocompatible scaffold. In recent years, biodegradable polymer scaffolds mimicking the extracellular matrix have been developed to promote the cell proliferation and extracellular matrix deposition. The biodegradable polymer scaffolds thus act as templates for tissue repair and regeneration. This article reviews the updated information regarding various types of natural and synthetic biodegradable polymers as well as their functions, physico-chemical properties, and degradation mechanisms in the development of biodegradable scaffolds for tissue engineering applications, including their combination with 3D printing.
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Affiliation(s)
- Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, ROC.
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36
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Advances in peripheral nervous system regenerative therapeutic strategies: A biomaterials approach. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 65:425-32. [DOI: 10.1016/j.msec.2016.04.048] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 02/20/2016] [Accepted: 04/14/2016] [Indexed: 01/02/2023]
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37
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Wang F, Liu X, Yuan J, Yang S, Li Y, Gao Q. Synthesis and characterization of poly(lactic acid-co-glycolic acid) complex microspheres as drug carriers. J Biomater Appl 2016; 31:544-552. [DOI: 10.1177/0885328216657548] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Poly(lactic-co-glycolic) acid (PLGA) is synthesized via melt polycondensation directly from lactic acid and glycolic acid with a feed molar ratio of 75/25. Bovine serum albumin, which is used as model protein, is entrapped into the poly(lactic-co-glycolic acid) microspheres with particle size of 260.9 ± 20.0 nm by the double emulsification method. Then it is the first report of producing more carboxyl groups by poly(lactic-co-glycolic acid) surface hydrolysis. The purpose is developing poly(lactic-co-glycolic acid) microspheres surface, which is modified with chitosan by chemical reaction between carboxyl groups and amine groups. The particle size and the positive zeta potential of the poly(lactic-co-glycolic acid)/chitosan microspheres are 388.2 ± 35.6 nm and 10.4 ± 2.9 mV, respectively. The drug loading ratio and encapsulation efficacy of poly(lactic-co-glycolic acid)/chitosan microspheres are 36.3% and 57.5%, which are higher than PLGA microspheres. Furthermore, the drug burst release of poly(lactic-co-glycolic acid)/chitosan microspheres at 10 h is decreased to 21.72% while the corresponding value of the poly(lactic-co-glycolic acid) microsphere is 64.56%. These results reveal that surface hydrolysis modification of poly(lactic-co-glycolic acid) is an efficient method to improve the negative potential and chemical reaction properties of the polymer. And furthermore, this study shows that chitosan-modified poly(lactic-co-glycolic acid) microspheres is a promising system for the controlled release of pharmaceutical proteins.
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Affiliation(s)
- Fang Wang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, PR China
- Department of Mechanical Engineering, University of Delaware, Newark, United States
| | - Xiuxiu Liu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, PR China
| | - Jian Yuan
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, PR China
| | - Siqian Yang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, PR China
| | - Yueqin Li
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, PR China
| | - Qinwei Gao
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, PR China
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38
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Salmoria G, Paggi R, Castro F, Roesler C, Moterle D, Kanis L. Development of PCL/Ibuprofen Tubes for Peripheral Nerve Regeneration. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.procir.2015.11.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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39
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Providing the right cues in nerve guidance conduits: Biofunctionalization versus fiber profile to facilitate oriented neuronal outgrowth. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 61:466-72. [PMID: 26838873 DOI: 10.1016/j.msec.2015.12.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 12/17/2015] [Accepted: 12/28/2015] [Indexed: 01/03/2023]
Abstract
Following peripheral nerve injury, rapid and spatially oriented axonal outgrowth from the proximal nerve stump is required for successful tissue regeneration. Regenerative strategies such as introducing fiber bundles into the nerve guidance conduits improve the directional growth of neurons and Schwann cells. Recently, it has been proposed that fiber profiling increases cell alignment and could accelerate neuronal growth. Here, we evaluate the impact of fiber profiling on the extent of neurite outgrowth in vitro as compared to non-profiled round fibers. We developed novel profiled trilobal poly(lactic acid) (PLA) fibers and systematically tested their potency to support nerve regeneration in vitro. The profiled fibers did not improve neurite outgrowth as compared to the round fibers. Instead, we show that growing neurites are merely guided by the type and quantity of proteins adsorbed on the polymer surface. Together this data has significant implications for in vivo experiments focusing on directional regrowth of severed axons across lesion sites during peripheral nerve regeneration.
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40
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Jenkins PM, Laughter MR, Lee DJ, Lee YM, Freed CR, Park D. A nerve guidance conduit with topographical and biochemical cues: potential application using human neural stem cells. NANOSCALE RESEARCH LETTERS 2015; 10:972. [PMID: 26071111 PMCID: PMC4469602 DOI: 10.1186/s11671-015-0972-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 06/03/2015] [Indexed: 05/26/2023]
Abstract
Despite major advances in the pathophysiological understanding of peripheral nerve damage, the treatment of nerve injuries still remains an unmet medical need. Nerve guidance conduits present a promising treatment option by providing a growth-permissive environment that 1) promotes neuronal cell survival and axon growth and 2) directs axonal extension. To this end, we designed an electrospun nerve guidance conduit using a blend of polyurea and poly-caprolactone with both biochemical and topographical cues. Biochemical cues were integrated into the conduit by functionalizing the polyurea with RGD to improve cell attachment. Topographical cues that resemble natural nerve tissue were incorporated by introducing intraluminal microchannels aligned with nanofibers. We determined that electrospinning the polymer solution across a two electrode system with dissolvable sucrose fibers produced a polymer conduit with the appropriate biomimetic properties. Human neural stem cells were cultured on the conduit to evaluate its ability to promote neuronal growth and axonal extension. The nerve guidance conduit was shown to enhance cell survival, migration, and guide neurite extension.
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Affiliation(s)
- Phillip M Jenkins
- />Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, CO 80045 USA
| | - Melissa R Laughter
- />Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, CO 80045 USA
| | - David J Lee
- />Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, CO 80045 USA
| | - Young M Lee
- />Division of Clinical Pharmacology and Toxicology, University of Colorado School of Medicine, 12700 E. 19th Avenue, Aurora, CO 80045 USA
| | - Curt R Freed
- />Division of Clinical Pharmacology and Toxicology, University of Colorado School of Medicine, 12700 E. 19th Avenue, Aurora, CO 80045 USA
| | - Daewon Park
- />Department of Bioengineering, University of Colorado Denver Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, CO 80045 USA
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41
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Hopkins TM, Heilman AM, Liggett JA, LaSance K, Little KJ, Hom DB, Minteer DM, Marra KG, Pixley SK. Combining micro-computed tomography with histology to analyze biomedical implants for peripheral nerve repair. J Neurosci Methods 2015; 255:122-30. [PMID: 26300184 DOI: 10.1016/j.jneumeth.2015.08.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 07/16/2015] [Accepted: 08/12/2015] [Indexed: 12/22/2022]
Abstract
BACKGROUND Biomedical implants used in tissue engineering repairs, such as scaffolds to repair peripheral nerves, can be too large to examine completely with histological analyses. Micro-computed tomography (micro-CT) with contrast agents allows ex vivo visualization of entire biomaterial implants and their interactions with tissues, but contrast agents can interfere with histological analyses of the tissues or cause shrinkage or loss of antigenicity. NEW METHOD Soft tissue, ex vivo micro-CT imaging using Lugol's iodine was compatible with histology after using a rapid (48 h) method of removing iodine. RESULTS Adult normal and repaired rat sciatic nerves were infiltrated ex vivo with iodine, imaged with micro-CT and then the iodine was removed by incubating tissues in sodium thiosulfate. Subsequent paraffin sections of normal nerve tissues showed no differences in staining with hematoxylin and eosin or immunostaining with multiple antibodies. Iodine treatment and removal did not alter axonal diameter, nuclear size or relative area covered by immunostained axons (p>0.05). Combining imaging modalities allowed comparisons of macroscopic and microscopic features of nerve tissues regenerating through simple nerve conduits or nerve conduits containing a titanium wire for guidance. COMPARISON WITH EXISTING METHODS Quantification showed that treatment with iodine and sodium thiosulfate did not result in tissue shrinkage or loss of antigenicity. CONCLUSIONS Because this combination of treatments is rapid and does not alter tissue morphology, this expands the ex vivo methods available to examine the success of biomaterial implants used for tissue engineering repairs.
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Affiliation(s)
- Tracy M Hopkins
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, United States
| | - Alexander M Heilman
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, United States
| | - James A Liggett
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, United States
| | - Kathleen LaSance
- Vontz Core Imaging Lab (VCIL), University of Cincinnati College of Medicine, Cincinnati, United States
| | - Kevin J Little
- Division of Pediatric Orthopaedics, Cincinnati Children's Hospital Medical Center, Cincinnati, United States
| | - David B Hom
- Division of Facial Plastic & Reconstructive Surgery, Program Director for the Facial Paralysis Clinic, Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, United States
| | - Danielle M Minteer
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, United States
| | - Kacey G Marra
- Departments of Plastic Surgery and Bioengineering, University of Pittsburgh, Pittsburgh, United States; Plastic Surgery Research Laboratory, Faculty, McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, United States
| | - Sarah K Pixley
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, United States.
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42
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Jiang CF, Hsu SH, Tsai KP, Tsai MH. Segmentation and tracking of stem cells in time lapse microscopy to quantify dynamic behavioral changes during spheroid formation. Cytometry A 2015; 87:491-502. [PMID: 25676894 DOI: 10.1002/cyto.a.22642] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 11/12/2014] [Accepted: 01/21/2015] [Indexed: 01/08/2023]
Abstract
Dynamic behavior of stem cells during in vitro development is diverse. Previous cell tracking studies have focused more on cell proliferation than on cell aggregation. However, the enhancement of cell proliferation in association with cell aggregation has been reported. In a previous study, we also demonstrated that the aggregation of adult human mesenchymal stem cells to form three-dimensional (3D) cellular spheroids helped maintain the expression of stemness marker genes in the cells. However, the dynamic behavioral changes triggered by spheroid formation remain to be investigated. A scheme of image processing techniques is proposed to meet this need. A hybrid-thresholding technique was first developed for efficient segmentation of cell clusters, after which a cell tracking method based on pair-matching with topological constraints was designed. Two morphological indices were derived to track the timing of 3D spheroid formation during the cellular aggregation process. Five cell motility indices measured from single cells and 3D spheroids were then compared. After confirmation of more than 90% correspondence between the results obtained by manual tracking and the proposed methods, an analysis of cellular behavior reveals a significant increase in motility in association with spheroid formation, consistent with a previous report that used a gene expression approach. This study proposed a systematic image analysis method to quantify the dynamic behavior of stem cells for stemness evaluation during cell culturing in vitro. Results demonstrated the validity of the developed platform in investigation of the dynamic behavior of cell aggregation in stem cell cultures in vitro.
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Affiliation(s)
- Ching-Fen Jiang
- Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan
| | - Shan-hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Ka-Pei Tsai
- Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan
| | - Ming-Hong Tsai
- Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan
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43
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Geuna S. The sciatic nerve injury model in pre-clinical research. J Neurosci Methods 2015; 243:39-46. [PMID: 25629799 DOI: 10.1016/j.jneumeth.2015.01.021] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 01/15/2015] [Accepted: 01/16/2015] [Indexed: 12/15/2022]
Abstract
In the pre-clinical view, the study of peripheral nerve repair and regeneration still needs to be carried out in animal models due to the structural complexity of this organ which can be only partly simulated in vitro. The far most used experimental model is based on the injury of the sciatic nerve, the largest nerve trunk in mammals. In this paper, the potential application of the sciatic nerve injury model in pre-clinical research is critically reviewed. This paper is aimed at helping researchers in properly employing this in vivo model for the study of nerve repair and regeneration as well as interpreting the results in a clinical translation perspective.
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Affiliation(s)
- Stefano Geuna
- Neuroscience Institute of the Cavalieri Ottolenghi Foundation & Department of Clinical and Biological Sciences, University of Turin, Italy.
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44
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Arslantunali D, Dursun T, Yucel D, Hasirci N, Hasirci V. Peripheral nerve conduits: technology update. MEDICAL DEVICES-EVIDENCE AND RESEARCH 2014; 7:405-24. [PMID: 25489251 PMCID: PMC4257109 DOI: 10.2147/mder.s59124] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Peripheral nerve injury is a worldwide clinical problem which could lead to loss of neuronal communication along sensory and motor nerves between the central nervous system (CNS) and the peripheral organs and impairs the quality of life of a patient. The primary requirement for the treatment of complete lesions is a tension-free, end-to-end repair. When end-to-end repair is not possible, peripheral nerve grafts or nerve conduits are used. The limited availability of autografts, and drawbacks of the allografts and xenografts like immunological reactions, forced the researchers to investigate and develop alternative approaches, mainly nerve conduits. In this review, recent information on the various types of conduit materials (made of biological and synthetic polymers) and designs (tubular, fibrous, and matrix type) are being presented.
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Affiliation(s)
- D Arslantunali
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey ; Department of Biotechnology, METU, Ankara, Turkey ; Department of Bioengineering, Gumushane University, Gumushane, Turkey
| | - T Dursun
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey ; Department of Biotechnology, METU, Ankara, Turkey
| | - D Yucel
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey ; Faculty of Engineering, Department of Medical Engineering, Acibadem University, Istanbul, Turkey ; School of Medicine, Department of Histology and Embryology, Acibadem University, Istanbul, Turkey
| | - N Hasirci
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey ; Department of Biotechnology, METU, Ankara, Turkey ; Department of Chemistry, Faculty of Arts and Sciences, METU, Ankara, Turkey
| | - V Hasirci
- BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey ; Department of Biotechnology, METU, Ankara, Turkey ; Department of Biological Sciences, Faculty of Arts and Sciences, METU, Ankara, Turkey
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45
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Zhao K, Zhang Y, Zhang X, Shi C, Wang X, Wang X, Jin Z, Cui S. Chitosan-coated poly(lactic-co-glycolic) acid nanoparticles as an efficient delivery system for Newcastle disease virus DNA vaccine. Int J Nanomedicine 2014; 9:4609-19. [PMID: 25356070 PMCID: PMC4207079 DOI: 10.2147/ijn.s70633] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
We determined the efficacy and safety of chitosan (CS)-coated poly(lactic-co-glycolic) acid
(PLGA) nanoparticles (NPs) as a delivery system for a vaccine to protect chickens against Newcastle
disease virus (NDV). The newly constructed vaccine contained DNA (the F gene) of NDV. The Newcastle
disease virus (NDV) F gene deoxyribonucleic acid (DNA) plasmid (pFDNA)-CS/PLGA-NPs were spherical
(diameter =699.1±5.21 nm [mean ± standard deviation]) and smooth,
with an encapsulation efficiency of 98.1% and a Zeta potential of +6.35 mV. An in vitro release
assay indicated that CS controlled the burst release of plasmid DNA, such that up to 67.4% of the
entire quantity of plasmid DNA was steadily released from the pFDNA-CS/PLGA-NPs. An in vitro
expression assay indicated that the expression of nanoparticles (NPs) was maintained in the NPs. In
an immunization test with specific pathogen-free chickens, the pFDNA-CS/PLGA-NPs induced stronger
cellular, humoral, and mucosal immune responses than the plasmid DNA vaccine alone. The
pFDNA-CS/PLGA-NPs did not harm 293T cells in an in vitro assay and did not harm chickens in an in
vivo assay. Overall, the results indicated that CS-coated PLGA NPs can serve as an efficient and
safe mucosal immune delivery system for NDV DNA vaccine.
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Affiliation(s)
- Kai Zhao
- Laboratory of Microbiology, School of Life Science, Heilongjiang University, Harbin, People's Republic of China
| | - Yang Zhang
- Laboratory of Microbiology, School of Life Science, Heilongjiang University, Harbin, People's Republic of China ; Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Harbin, People's Republic of China
| | - Xiaoyan Zhang
- Laboratory of Microbiology, School of Life Science, Heilongjiang University, Harbin, People's Republic of China
| | - Ci Shi
- Laboratory of Microbiology, School of Life Science, Heilongjiang University, Harbin, People's Republic of China ; Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Harbin, People's Republic of China
| | - Xin Wang
- Laboratory of Microbiology, School of Life Science, Heilongjiang University, Harbin, People's Republic of China
| | - Xiaohua Wang
- Laboratory of Microbiology, School of Life Science, Heilongjiang University, Harbin, People's Republic of China
| | - Zheng Jin
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion, Heilongjiang University, Harbin, People's Republic of China
| | - Shangjin Cui
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Harbin, People's Republic of China
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46
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Tseng TC, Yen CT, Hsu SH. Visualization of peripheral nerve regeneration. Neural Regen Res 2014; 9:997-9. [PMID: 25206750 PMCID: PMC4146305 DOI: 10.4103/1673-5374.133157] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2014] [Indexed: 11/20/2022] Open
Affiliation(s)
- Ting-Chen Tseng
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, China
| | - Chen-Tung Yen
- Department of Life Science, National Taiwan University, Taipei, Taiwan, China
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, China ; Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan, China
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47
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Liu BS, Huang TB, Chan SC. Roles of reinforced nerve conduits and low-level laser phototherapy for long gap peripheral nerve repair. Neural Regen Res 2014; 9:1180-2. [PMID: 25206779 PMCID: PMC4146286 DOI: 10.4103/1673-5374.135323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2014] [Indexed: 11/09/2022] Open
Affiliation(s)
- Bai-Shuan Liu
- Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, Taiwan, China
| | - Tsung-Bin Huang
- Department of Bioscience Technology, Chang Jung Christian University, Tainan, Taiwan, China
| | - Shiuh-Chuan Chan
- Graduate Institute of Pharmaceutical Science and Technology, Central Taiwan University of Science and Technology, Taichung, Taiwan, China
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48
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Electrospun poly(l-lactic acid) fiber mats containing crude Garcinia mangostana extracts for use as wound dressings. Polym Bull (Berl) 2014. [DOI: 10.1007/s00289-014-1102-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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49
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Peterson EJ, Tyler DJ. Motor neuron activation in peripheral nerves using infrared neural stimulation. J Neural Eng 2013; 11:016001. [PMID: 24310923 DOI: 10.1088/1741-2560/11/1/016001] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Localized activation of peripheral axons may improve selectivity of peripheral nerve interfaces. Infrared neural stimulation (INS) employs localized delivery to activate neural tissue. This study investigated INS to determine whether localized delivery limited functionality in larger mammalian nerves. APPROACH The rabbit sciatic nerve was stimulated extraneurally with 1875 nm wavelength infrared light, electrical stimulation, or a combination of both. Infrared-sensitive regions (ISR) of the nerve surface and electromyogram (EMG) recruitment of the Medial Gastrocnemius, Lateral Gastrocnemius, Soleus, and Tibialis Anterior were the primary output measures. Stimulation applied included infrared-only, electrical-only, and combined infrared and electrical. MAIN RESULTS 81% of nerves tested were sensitive to INS, with 1.7 ± 0.5 ISR detected per nerve. INS was selective to a single muscle within 81% of identified ISR. Activation energy threshold did not change significantly with stimulus power, but motor activation decreased significantly when radiant power was decreased. Maximum INS levels typically recruited up to 2-9% of any muscle. Combined infrared and electrical stimulation differed significantly from electrical recruitment in 7% of cases. SIGNIFICANCE The observed selectivity of INS indicates that it may be useful in augmenting rehabilitation, but significant challenges remain in increasing sensitivity and response magnitude to improve the functionality of INS.
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Affiliation(s)
- E J Peterson
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
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50
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Sahakyants T, Lee JY, Friedrich PF, Bishop AT, Shin AY. Return of motor function after repair of a 3-cm gap in a rabbit peroneal nerve: a comparison of autograft, collagen conduit, and conduit filled with collagen-GAG matrix. J Bone Joint Surg Am 2013; 95:1952-8. [PMID: 24196465 DOI: 10.2106/jbjs.m.00215] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND The purpose of this study was to evaluate the motor nerve recovery in a rabbit model after repair of a 3-cm gap in the peroneal nerve with a conduit filled with a collagen-GAG (glycosaminoglycan) matrix and compare the results with those after reconstruction with an autograft or an empty collagen conduit. METHODS Forty-two male New Zealand rabbits were divided into three experimental groups. In each group, a unilateral 3-cm peroneal nerve defect was repaired with a nerve autograft, an empty collagen conduit, or a conduit filled with a collagen-GAG matrix. At six months, nerve regeneration was evaluated on the basis of the compound muscle action potentials, maximum isometric tetanic force, and wet muscle weight of the tibialis anterior muscle as well as nerve histomorphometry. RESULTS The autograft group had significantly better motor recovery than the conduit groups. The empty collagen conduits and conduits filled with the collagen-GAG matrix led to results that were similar to each other. CONCLUSIONS On the basis of this rabbit model, autologous nerve grafting remains the gold standard in the reconstruction of 3-cm segmental motor nerve defects. CLINICAL RELEVANCE Segmental motor nerve defects should be reconstructed with autograft nerves. The use of a collagen conduit filled with a collagen-GAG matrix for motor nerve reconstruction should be limited until additional animal studies are performed.
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Affiliation(s)
- Tatevik Sahakyants
- Department of Orthopedic Surgery, Mayo Clinic, 200 First Street S.W., Rochester, MN 55905. E-mail address for A.Y. Shin:
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