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Yu M, Shen M, Chen D, Li Y, Zhou Q, Deng C, Zhou X, Zhang Q, He Q, Wang H, Cong M, Shi H, Gu X, Zhou S, Ding F. Chitosan/PLGA-based tissue engineered nerve grafts with SKP-SC-EVs enhance sciatic nerve regeneration in dogs through miR-30b-5p-mediated regulation of axon growth. Bioact Mater 2024; 40:378-395. [PMID: 38978801 PMCID: PMC11228890 DOI: 10.1016/j.bioactmat.2024.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/22/2024] [Accepted: 06/06/2024] [Indexed: 07/10/2024] Open
Abstract
Extracellular vesicles from skin-derived precursor Schwann cells (SKP-SC-EVs) promote neurite outgrowth in culture and enhance peripheral nerve regeneration in rats. This study aimed at expanding the application of SKP-SC-EVs in nerve grafting by creating a chitosan/PLGA-based, SKP-SC-EVs-containing tissue engineered nerve graft (TENG) to bridge a 40-mm long sciatic nerve defect in dogs. SKP-SC-EVs contained in TENGs significantly accelerated the recovery of hind limb motor and electrophysiological functions, supported the outgrowth and myelination of regenerated axons, and alleviated the denervation-induced atrophy of target muscles in dogs. To clarify the underlying molecular mechanism, we observed that SKP-SC-EVs were rich in a variety of miRNAs linked to the axon growth of neurons, and miR-30b-5p was the most important among others. We further noted that miR-30b-5p contained within SKP-SC-EVs exerted nerve regeneration-promoting effects by targeting the Sin3a/HDAC complex and activating the phosphorylation of ERK, STAT3 or CREB. Our findings suggested that SKP-SC-EVs-incorporating TENGs represent a novel type of bioactive material with potential application for peripheral nerve repair in the clinic.
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Affiliation(s)
- Miaomei Yu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
- Clinical Medical Research Center, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, 213003, China
| | - Mi Shen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Daiyue Chen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Yan Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Qiang Zhou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Chunyan Deng
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Xinyang Zhou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Qi Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Qianru He
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Hongkui Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Meng Cong
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Haiyan Shi
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
- Department of Pathophysiology, School of Medicine, Nantong University, Nantong, Jiangsu, 226001, China
| | - Xiaosong Gu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Songlin Zhou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
| | - Fei Ding
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu, 226001, China
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Hattori Y, Takeda S, Usami T, Shibata R, Takahashi H, Joyo Y, Kawaguchi Y, Okamoto H, Murakami H, Paholpak P, Ota H. Tensile Strength of Nerve Bridging Models Using Collagen Nerve Conduits. J Reconstr Microsurg 2024. [PMID: 39142345 DOI: 10.1055/a-2387-3282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
BACKGROUND In the treatment of peripheral nerve injuries with nerve defects, second-generation collagen-based conduits, such as Renerve® (Nipro, Osaka, Japan), have shown the potential for promoting nerve regeneration. However, there is concern related to the weak material properties. No previous studies have addressed the strength of the bridging model using collagen conduits. This study aimed to investigate the tensile strength and failure patterns in nerve defect models bridged with Renerve® conduits through biomechanical research. METHODS Using fresh chicken sciatic nerves, we examined the maximum failure load of four groups: bridging models using Renerve® with one suture (group A), with two sutures (group B), with three sutures (group C), and end-to-end neurorrhaphy models with two sutures (group N). Each group had eight specimens. We also evaluated failure patterns of the specimens. RESULTS Group N showed a significantly higher maximum failure load (0.96 ± 0.13 N) compared to groups A (0.23 ± 0.06 N, p < 0.0001), B (0.29 ± 0.05 N, p < 0.0001), and C (0.40 ± 0.10 N, p < 0.0001). Regarding failure patterns, all specimens in group A showed nerve-end dislocation from the conduit. Two specimens in group B and three specimens in group C failed due to circumferential cracks in the conduit. Six specimens in group B and five specimens in group C exhibited cutting out of sutures from the conduit. CONCLUSION This study suggests that the number of sutures in synthetic collagen nerve conduits has little effect on the maximum failure load. To take advantage of its biomaterial benefits, a period of postoperative range of motion restriction may be required.
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Affiliation(s)
- Yusuke Hattori
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
- Department of Orthopedic Surgery, Nagoya City University East Medical Center, Nagoya, Japan
| | - Shinsuke Takeda
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
| | - Takuya Usami
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
| | - Ryutaro Shibata
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
| | - Hiroshi Takahashi
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
| | - Yuji Joyo
- Department of Orthopedic Surgery, Nagoya City University East Medical Center, Nagoya, Japan
| | - Yohei Kawaguchi
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
| | - Hideki Okamoto
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
| | - Hideki Murakami
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
| | - Permsak Paholpak
- Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Hideyuki Ota
- Department of Orthopedic Surgery and Hand Surgery, Nagoya Ekisaikai Hospital, Nagoya, Japan
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Dell'Apa D, Auletta L, Okonji S, Cauduro A, Dondi M, Opreni M, Gandini G, Bianchi E. Traumatic and iatrogenic sciatic nerve injury in 38 dogs and 10 cats: Clinical and electrodiagnostic findings. J Vet Intern Med 2024; 38:1626-1638. [PMID: 38634245 PMCID: PMC11099794 DOI: 10.1111/jvim.17076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 04/01/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Reports describing sciatic nerve injuries (SNI) and their outcome are scarce in veterinary medicine. HYPOTHESIS Describe the causes of traumatic and iatrogenic SNI and evaluate which clinical and electrodiagnostic findings predict outcome. ANIMALS Thirty-eight dogs and 10 cats with confirmed SNI referred for neurologic and electrodiagnostic evaluation. METHODS Clinical and electrodiagnostic examination results, including electromyography (EMG), motor nerve conduction studies, muscle-evoked potential (MEP), F-waves, sensory nerve conduction studies, and cord dorsum potential (CDP), were retrospectively evaluated. Quality of life (QoL) was assessed based on owner interviews. RESULTS Surgery (42%) and trauma (33%) were the most common causes of SNI; in dogs, 24% were caused by bites from wild boars. Ability to flex and extend the tarsus was significantly associated with positive outcome in dogs. Mean time from onset of clinical signs until electrodiagnostic evaluation was 67 ± 65 (range, 7-300) days and 65 ± 108 (range, 7-365) days for dogs and cats, respectively. A cut-off amplitude of 1.45 mV for compound motor action potentials (CMAP) was predictive of positive outcome in dogs (P = .01), with sensitivity of 58% and specificity of 100%. CONCLUSIONS AND CLINICAL IMPORTANCE Clinical motor function predicts recovery better than sensory function. Electrodiagnostic findings also may play a role in predicting the outcome of SNI. Application of the proposed CMAP cut-off amplitude may assist clinicians in shortening the time to reassessment or for earlier suggestion of salvage procedures. Owners perceived a good quality of life (QoL), even in cases of hindlimb amputation.
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Affiliation(s)
| | - Luigi Auletta
- Department of Veterinary Medicine and Animal Sciences (DIVAS)University of MilanMilanItaly
| | - Samuel Okonji
- Department of Veterinary Medical ScienceUniversity of BolognaBolognaItaly
| | | | - Maurizio Dondi
- Department of Veterinary ScienceUniversity of ParmaParmaItaly
| | | | - Gualtiero Gandini
- Department of Veterinary Medical ScienceUniversity of BolognaBolognaItaly
| | - Ezio Bianchi
- Department of Veterinary ScienceUniversity of ParmaParmaItaly
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Lopes B, Coelho A, Alvites R, Sousa AC, Sousa P, Moreira A, Atayde L, Salgado A, Geuna S, Maurício AC. Animal models in peripheral nerve transection studies: a systematic review on study design and outcomes assessment. Regen Med 2024; 19:189-203. [PMID: 37855207 DOI: 10.2217/rme-2023-0102] [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] [Indexed: 10/20/2023] Open
Abstract
Aim: Peripheral nerve injury regeneration studies using animal models are crucial to different pre-clinical therapeutic approaches efficacy evaluation whatever the surgical technique explored. Materials & methods: A 944 articles systematic review on 'peripheral nerve injury in animal models' over the last 9 years was carried out. Results: It was found that 91% used rodents, and only 9% employed large animals. Different nerves are studied, with generated gaps (10,78 mm) and methods applied for regeneration evaluation uniformed. Sciatic nerve was the most used (88%), followed by median and facial nerves (2.6%), significantly different. Conclusion: There has not been a significant scale-up of the in vivo testing to large animal models (anatomically/physiologically closer to humans), allowing an improvement in translational medicine for clinical cases.
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Affiliation(s)
- Bruna Lopes
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, 4051-401, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, No. 228, Porto, 4050-313, Portugal
- Associate Laboratory for Animal & Veterinary Science (AL4AnimalS), Lisboa, 1300-477, Portugal
| | - André Coelho
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, 4051-401, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, No. 228, Porto, 4050-313, Portugal
- Associate Laboratory for Animal & Veterinary Science (AL4AnimalS), Lisboa, 1300-477, Portugal
| | - Rui Alvites
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, 4051-401, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, No. 228, Porto, 4050-313, Portugal
- Associate Laboratory for Animal & Veterinary Science (AL4AnimalS), Lisboa, 1300-477, Portugal
- Instituto Universitário de Ciências da Saúde (CESPU), Avenida Central de Gandra 1317, Gandra, Paredes, 4585-116, Portugal
| | - Ana Catarina Sousa
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, 4051-401, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, No. 228, Porto, 4050-313, Portugal
- Associate Laboratory for Animal & Veterinary Science (AL4AnimalS), Lisboa, 1300-477, Portugal
| | - Patrícia Sousa
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, 4051-401, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, No. 228, Porto, 4050-313, Portugal
- Associate Laboratory for Animal & Veterinary Science (AL4AnimalS), Lisboa, 1300-477, Portugal
| | - Alícia Moreira
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, 4051-401, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, No. 228, Porto, 4050-313, Portugal
- Associate Laboratory for Animal & Veterinary Science (AL4AnimalS), Lisboa, 1300-477, Portugal
| | - Luís Atayde
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, 4051-401, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, No. 228, Porto, 4050-313, Portugal
- Associate Laboratory for Animal & Veterinary Science (AL4AnimalS), Lisboa, 1300-477, Portugal
| | - António Salgado
- Life & Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal
- ICVS/3B's e PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Stefano Geuna
- Department of Clinical & Biological Sciences, & Cavalieri Ottolenghi Neuroscience Institute, University of Turin, Ospedale San Luigi, Orbassano, Turin, 10043, Italy
| | - Ana Colette Maurício
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, 4051-401, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, No. 228, Porto, 4050-313, Portugal
- Associate Laboratory for Animal & Veterinary Science (AL4AnimalS), Lisboa, 1300-477, Portugal
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Demyanenko SV, Kalyuzhnaya YN, Bachurin SS, Khaitin AM, Kunitsyna AE, Batalshchikova SA, Evgen'ev MB, Garbuz DG. Exogenous Hsp70 exerts neuroprotective effects in peripheral nerve rupture model. Exp Neurol 2024; 373:114670. [PMID: 38158007 DOI: 10.1016/j.expneurol.2023.114670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/08/2023] [Accepted: 12/23/2023] [Indexed: 01/03/2024]
Abstract
Hsp70 is the main molecular chaperone responsible for cellular proteostasis under normal conditions and for restoring the conformation or utilization of proteins damaged by stress. Increased expression of endogenous Hsp70 or administration of exogenous Hsp70 is known to exert neuroprotective effects in models of many neurodegenerative diseases. In this study, we have investigated the effect of exogenous Hsp70 on recovery from peripheral nerve injury in a model of sciatic nerve transection in rats. It was shown that recombinant Hsp70 after being added to the conduit connecting the ends of the nerve at the site of its extended severance, migrates along the nerve into the spinal ganglion and is retained there at least three days. In animals with the addition of recombinant Hsp70 to the conduit, a decrease in apoptosis in the spinal ganglion cells after nerve rupture, an increase in the level of PTEN-induced kinase 1 (PINK1), an increase in markers of nerve tissue regeneration and a decrease in functional deficit were observed compared to control animals. The obtained data indicate the possibility of using recombinant Hsp70 preparations to accelerate the recovery of patients after neurotrauma.
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Affiliation(s)
- Svetlana V Demyanenko
- Laboratory «Molecular Neurobiology», Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia; Department of General and Clinical Biochemistry no. 2, Rostov State Medical University, Rostov-on-Don, Russia
| | - Yuliya N Kalyuzhnaya
- Laboratory «Molecular Neurobiology», Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia
| | - Stanislav S Bachurin
- Department of General and Clinical Biochemistry no. 2, Rostov State Medical University, Rostov-on-Don, Russia
| | - Andrey M Khaitin
- Laboratory «Molecular Neurobiology», Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia
| | - Anastasia E Kunitsyna
- Laboratory «Molecular Neurobiology», Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia
| | - Svetlana A Batalshchikova
- Laboratory «Molecular Neurobiology», Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia
| | - Michael B Evgen'ev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - David G Garbuz
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia.
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Kuang R, Zhang Y, Wu G, Zhu Z, Xu S, Liu X, Xu Y, Luo Y. Long Non-coding RNAs Influence Aging Process of Sciatic Nerves in SD Rats. Comb Chem High Throughput Screen 2024; 27:2140-2150. [PMID: 37691192 PMCID: PMC11348477 DOI: 10.2174/1386207326666230907115800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/19/2023] [Accepted: 08/23/2023] [Indexed: 09/12/2023]
Abstract
OBJECTIVES To investigate the long non-coding RNAs (lncRNAs) changes in the sciatic nerve (SN) in Sprague Dawley (SD) rats during aging. METHODS Eighteen healthy SD rats were selected at the age of 1 month (1M) and 24 months (24M) and SNs were collected. High-throughput transcriptome sequencing and bioinformatics analysis were performed. Protein-protein interaction (PPI) networks and competing endogenous RNA (ceRNA) networks were established according to differentially expressed genes (DEGs). RESULT As the length of lncRNAs increased, its proportion to the total number of lncRNAs decreased. A total of 4079 DElncRNAs were identified in Con vs. 24M. GO analysis was primarily clustered in nerve and lipid metabolism, extracellular matrix, and vascularization-related fields. There were 17 nodes in the PPI network of the target genes of up-regulating genes including Itgb2, Lox, Col11a1, Wnt5a, Kras, etc. Using quantitative RT-PCR, microarray sequencing accuracy was validated. There were 169 nodes constructing the PPI network of down-regulated target genes, mainly including Col1a1, Hmgcs1, Hmgcr. CeRNA interaction networks were constructed. CONCLUSION Lipid metabolism, angiogenesis, and ECM fields might play an important role in the senescence process in SNs. Col3a1, Serpinh1, Hmgcr, and Fdps could be candidates for nerve aging research.
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Affiliation(s)
- Rui Kuang
- Department of Plastic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou 510080, China
| | - Yi Zhang
- Department of Plastic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou 510080, China
| | - Guanggeng Wu
- Department of Plastic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou 510080, China
| | - Zhaowei Zhu
- Department of Plastic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou 510080, China
| | - Shuqia Xu
- Department of Plastic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou 510080, China
| | - Xiangxia Liu
- Department of Plastic Surgery, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Yangbin Xu
- Department of Plastic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou 510080, China
| | - Yunxiang Luo
- Department of Plastic Surgery, The First Affiliated Hospital of Sun Yat-Sen University, No. 58 Zhongshan Road 2, Guangzhou 510080, China
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Dong X, Zhang H, Duan P, Liu K, Yu Y, Wei W, Wang W, Liu Y, Cheng Q, Liang X, Huo Y, Yan L, Yu A, Dai H. An injectable and adaptable hydrogen sulfide delivery system for modulating neuroregenerative microenvironment. SCIENCE ADVANCES 2023; 9:eadi1078. [PMID: 38117891 PMCID: PMC10732521 DOI: 10.1126/sciadv.adi1078] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 11/17/2023] [Indexed: 12/22/2023]
Abstract
Peripheral nerve regeneration is a complex physiological process. Single-function nerve scaffolds often struggle to quickly adapt to the imbalanced regenerative microenvironment, leading to slow nerve regeneration and limited functional recovery. In this study, we demonstrate a "pleiotropic gas transmitter" strategy based on endogenous reactive oxygen species (ROS), which trigger the on-demand H2S release at the defect area for transected peripheral nerve injury (PNI) repair through concurrent neuroregeneration and neuroprotection processing. This H2S delivery system consists of an H2S donor (peroxyTCM) encapsulated in a ROS-responsive polymer (mPEG-PMet) and loaded into a temperature-sensitive poly (amino acid) hydrogel (mPEG-PA-PP). This multi-effect combination strategy greatly promotes the regeneration of PNI, attributed to the physiological effects of H2S. These effects include the inhibition of inflammation and oxidative stress, protection of nerve cells, promotion of angiogenesis, and the restoration of normal mitochondrial function. The adaptive release of pleiotropic messengers to modulate the tissue regeneration microenvironment offers promising peripheral nerve repair and tissue engineering opportunities.
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Affiliation(s)
- Xianzhen Dong
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
| | - Hao Zhang
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Ping Duan
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Kun Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
| | - Yifeng Yu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Wenying Wei
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
| | - Weixing Wang
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Yuhang Liu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Qiang Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
| | - Xinyue Liang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
| | - Yuanfang Huo
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
| | - Lesan Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
| | - Aixi Yu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Honglian Dai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
- Shenzhen Research Institute of Wuhan University of Technology, Shenzhen 518000, China
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Jiang Z, Zhang W, Liu C, Xia L, Wang S, Wang Y, Shao K, Han B. Facilitation of Cell Cycle and Cellular Migration of Rat Schwann Cells by O-Carboxymethyl Chitosan to Support Peripheral Nerve Regeneration. Macromol Biosci 2023; 23:e2300025. [PMID: 37282815 DOI: 10.1002/mabi.202300025] [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: 01/25/2023] [Revised: 04/03/2023] [Indexed: 06/08/2023]
Abstract
O-carboxymethyl chitosan (CM-chitosan), holds high potential as a valuable biomaterial for nerve guidance conduits (NGCs). However, the lack of explicit bioactivity on neurocytes and poor duration that does not match nerve repair limit the restorative effects. Herein, CM-chitosan-based NGC is designed to induce the reconstruction of damaged peripheral nerves without addition of other activation factors. CM-chitosan possesses excellent performance in vitro for nerve tissue engineering, such as increasing the organization of filamentous actin and the expression of phospho-Akt, and facilitating the cell cycle and migration of Schwann cells. Moreover, CM-chitosan exhibits increased longevity upon cross-linking (C-CM-chitosan) with 1, 4-Butanediol diglycidyl ether, and C-CM-chitosan fibers possess appropriate biocompatibility. In order to imitate the structure of peripheral nerves, multichannel bioactive NGCs are prepared from lumen fillers of oriented C-CM-chitosan fibers and outer warp-knitted chitosan pipeline. Implantation of the C-CM-chitosan NGCs to rats with 10-mm defects of peripheral nerves effectively improve nerve function reconstruction by increasing the sciatic functional index, decreasing the latent periods of heat tingling, enhancing the gastrocnemius muscle, and promoting nerve axon recovery, showing regenerative efficacy similar to that of autograft. The results lay a theoretical foundation for improving the potential high-value applications of CM-chitosan-based bioactive materials in nerve tissue engineering.
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Affiliation(s)
- Zhiwen Jiang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Wei Zhang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Chenqi Liu
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Lixin Xia
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Shuo Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Yanting Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
| | - Kai Shao
- Department of Central Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, 266035, P. R. China
| | - Baoqin Han
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China
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Monfette V, Choinière W, Godbout-Lavoie C, Pelletier S, Langelier È, Lauzon MA. Thermoelectric Freeze-Casting of Biopolymer Blends: Fabrication and Characterization of Large-Size Scaffolds for Nerve Tissue Engineering Applications. J Funct Biomater 2023; 14:330. [PMID: 37367294 DOI: 10.3390/jfb14060330] [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: 05/08/2023] [Revised: 06/03/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023] Open
Abstract
Peripheral nerve injuries (PNIs) are detrimental to the quality of life of affected individuals. Patients are often left with life-long ailments that affect them physically and psychologically. Autologous nerve transplant is still the gold standard treatment for PNIs despite limited donor site and partial recovery of nerve functions. Nerve guidance conduits are used as a nerve graft substitute and are efficient for the repair of small nerve gaps but require further improvement for repairs exceeding 30 mm. Freeze-casting is an interesting fabrication method for the conception of scaffolds meant for nerve tissue engineering since the microstructure obtained comprises highly aligned micro-channels. The present work focuses on the fabrication and characterization of large scaffolds (35 mm length, 5 mm diameter) made of collagen/chitosan blends by freeze-casting via thermoelectric effect instead of traditional freezing solvents. As a freeze-casting microstructure reference, scaffolds made from pure collagen were used for comparison. Scaffolds were covalently crosslinked for better performance under load and laminins were further added to enhance cell interactions. Microstructural features of lamellar pores display an average aspect ratio of 0.67 ± 0.2 for all compositions. Longitudinally aligned micro-channels are reported as well as enhanced mechanical properties in traction under physiological-like conditions (37 °C, pH = 7.4) resulting from crosslinking treatment. Cell viability assays using a rat Schwann cell line derived from sciatic nerve (S16) indicate that scaffold cytocompatibility is similar between scaffolds made from collagen only and scaffolds made from collagen/chitosan blend with high collagen content. These results confirm that freeze-casting via thermoelectric effect is a reliable manufacturing strategy for the fabrication of biopolymer scaffolds for future peripheral nerve repair applications.
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Affiliation(s)
- Vincent Monfette
- Department of Chemical Engineering and Biotechnological of Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - William Choinière
- Department of Chemical Engineering and Biotechnological of Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Catherine Godbout-Lavoie
- Department of Chemical Engineering and Biotechnological of Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Samuel Pelletier
- Department of Electrical Engineering and Informatics Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Ève Langelier
- Department of Mechanical Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Marc-Antoine Lauzon
- Department of Chemical Engineering and Biotechnological of Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
- Research Center on Aging, CIUSSS de l'ESTRIE-CHUS, Sherbrooke, QC J1H 4C4, Canada
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Multichannel nerve conduit based on chitosan derivates for peripheral nerve regeneration and Schwann cell survival. Carbohydr Polym 2022; 301:120327. [DOI: 10.1016/j.carbpol.2022.120327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 11/05/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022]
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Epineural Neurorrhaphy of a Large Nerve Defect Due to IatroGenic Sciatic Nerve Injury in a Maltese Dog. Vet Sci 2022; 9:vetsci9070361. [PMID: 35878378 PMCID: PMC9324001 DOI: 10.3390/vetsci9070361] [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: 06/17/2022] [Revised: 07/08/2022] [Accepted: 07/14/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Sciatic nerve injury could occur due to mistake of surgery and called as ‘iatrogenic injury’. This type of injury is rare in dogs. Historically, this injury is treated through physiotherapy. However, if the nerve is completely transected, surgery such as nerve repair could be addressed. Unfortunately, if there is a large gap between transected sciatic nerve, it is very difficult to treat. Sometimes amputation is recommended because of permanent problem with dog’s hind leg. By the way, it is not known how long the gap can be treated in dogs before the important decision of whether to amputate the leg or not. Therefore, we would like to described a good result of treating an iatrogenic sciatic nerve injury with a large defect measuring 20 mm in length in a small Maltese dog. The dog suffered nerve injury after hip joint surgery and could not be walking himself for 2 months. So, we decided to treat him by nerve repair despite of large gap. Sensation and walking function of his hind leg was recovered almost completely after 2.5 years. Although sciatic nerve injury with large gap is a concern, it could be treated through surgery, even in small Maltese. Abstract Epineural neurorrhaphy is a standard nerve repair method, but it is rarely reported in veterinary literature. Epineural neurorrhaphy in canine sciatic nerve injury are described in this report. An 11-month-old, castrated male Maltese dog, presented with an one-month history of non-weight bearing lameness and knuckling of the right pelvic limb. The dog showed absence of superficial and deep pain perception on the dorsal and lateral surfaces below the stifle joint. The dog had undergone femoral head and neck osteotomy in the right pelvic limb one month prior to referral at a local hospital. Based on physical and neurological examinations, peripheral nerve injury of the right pelvic limb was suspected. Radiography showed irregular bony proliferation around the excised femoral neck. Magnetic resonance imaging revealed sciatic nerve injury with inconspicuous continuity at the greater trochanter level. A sciatic nerve neurotmesis was suspected and surgical repair was decided. During surgery, non-viable tissue of the sciatic nerve was debrided, and epineural neurorrhaphy was performed to bridge a large, 20-mm defect. The superficial and deep pain perception was progressively improved and restored at 3 weeks postoperatively, and the dog exhibited a gradual improvement in motor function. At 10 weeks postoperatively, the dog showed no neurological deficit including knuckling but the tarsal joint hyperextension did not improve due to ankylosis. The dog had undergone tarsal arthrodesis and exhibited almost normal limb function without any neurologic sequela until the last follow-up at 2.5 years postoperatively.
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Gold nanorods decorated polycaprolactone/cellulose acetate hybrid scaffold for PC12 cells proliferation. Int J Biol Macromol 2022; 206:511-520. [PMID: 35240215 DOI: 10.1016/j.ijbiomac.2022.02.156] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/15/2022] [Accepted: 02/25/2022] [Indexed: 01/12/2023]
Abstract
Synthetic and natural polymers have recently received considerable attention due to the exclusive potential for supporting the regenerative cellular processes in peripheral nerve injuries (PNIs). Gold nanorods (GNRs) decorated polycaprolactone (PCL)/cellulose acetate (CA) nanocomposite (PCL/CA/GNR) were fabricated via electrospinning to improve PC12 cells attachment and growth or scaffold cues. Transmission electron microscopy (TEM) corroborated the GNR distribution (23 ± 2 nm length and 3/1 Aspect ratio) and suitable average dimension of 800 nm for the fibers; also, scanning electron microscopy (SEM) represented block-free and smooth fibers without perturbation. Because of gold nanorods incorporation, electrical conductivity of PCL/CA/GNR increased ~21%. Water contact angle data emphasized PCL/CA/GNR surface is more wettable that PCL/CA (<90° at 62 s). Real-time PCR technique (RT-PCR) demonstrated overexpression of β-tubulin and microtubule-associated protein 2 (MAP2) on PCL/CA/GNR compared to PCL/CA composite. Additionally, evaluated of the maturation and neurogenic differentiation of PC12 cells emphasized overexpression of nestin and β-tubulin by Immunocytochemistry staining onto PCL/CA/GNR in comparison to PCL/CA composite. Notably, these recently developed hybrid scaffolds could be considered for peripheral nerve injury (PNI) regeneration.
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13
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Lu P, Wang G, Qian T, Cai X, Zhang P, Li M, Shen Y, Xue C, Wang H. The balanced microenvironment regulated by the degradants of appropriate PLGA scaffolds and chitosan conduit promotes peripheral nerve regeneration. Mater Today Bio 2021; 12:100158. [PMID: 34841240 PMCID: PMC8605345 DOI: 10.1016/j.mtbio.2021.100158] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/10/2021] [Accepted: 11/13/2021] [Indexed: 12/19/2022] Open
Abstract
Tissue-engineered nerve grafts (TENGs) are the most promising way for repairing long-distance peripheral nerve defects. Chitosan and poly (lactic-co-glycolic acid) (PLGA) scaffolds are considered as the promising materials in the pharmaceutical and biomedical fields especially in the field of tissue engineering. To further clarify the effects of a chitosan conduit inserted with various quantity of poly (lactic-co-glycolic acid) (PLGA) scaffolds, and their degrades on the peripheral nerve regeneration, the chitosan nerve conduit inserted with different amounts of PLGA scaffolds were used to repair rat sciatic nerve defects. The peripheral nerve regeneration at the different time points was dynamically and comprehensively evaluated. Moreover, the influence of different amounts of PLGA scaffolds on the regeneration microenvironment including inflammatory response and cell state were also revealed. The modest abundance of PLGA is more instrumental to the success of nerve regeneration, which is demonstrated in terms of the structure of the regenerated nerve, reinnervation of the target muscle, nerve impulse conduction, and overall function. The PLGA scaffolds aid the migration and maturation of Schwann cells. Furthermore, the PLGA and chitosan degradation products in a correct ratio neutralize, reducing the inflammatory response and enhancing the regeneration microenvironment. The balanced microenvironment regulated by the degradants of appropriate PLGA scaffolds and chitosan conduit promotes peripheral nerve regeneration. The findings represent a further step towards programming TENGs construction, applying polyester materials in regenerative medicine, and understanding the neural regeneration microenvironment. Guide scaffolds are necessary for construction of TENGs to benefeat Schwann cell migration and maturation. A large number of acid degradation products of PLGA scaffolds adversely affect cell proliferation, migration and apoptosis. Appropriate amount of PLGA scaffolds balance positive cell guidance and negative degradation inflammation. Dosage of PLGA and its combination with complementary biomaterials are key factors that affect regeneration effects.
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Key Words
- ANOVA, one-way analysis of variance
- CCK8, Cell Counting Kit-8
- CMAPs, compound muscle action potentials
- DAPI, 4’ 6-diamidino-2-phenylindole
- DMEM, Dulbecco’s modified eagle medium
- FBS, fetal bovine serum
- HE, hematoxylin-eosin
- Inflammation
- NC, negative control
- NS, normal saline
- OD, optical density
- PGA, poly (glycolic acid)
- PLA, poly (lactic acid)
- PLGA
- PLGA, poly (lactic-co-glycolic acid)
- Regeneration microenvironment
- SCs, Schwann cells
- SD, Sprague-Dawley
- SD, standard deviation
- SFI, sciatic nerve function index
- Schwann cells
- TENG, tissue-engineered nerve graft
- TUNEL, terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling
- α-BGT, α-bungarotoxin
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Affiliation(s)
- Panjian Lu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Gang Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Tianmei Qian
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Xiaodong Cai
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Ping Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Meiyuan Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Yinying Shen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Chengbin Xue
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China.,Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, China
| | - Hongkui Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
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Zhu GC, Xiao DJ, Zhu BW, Xiao Y. Repairing whole facial nerve defects with xenogeneic acellular nerve grafts in rhesus monkeys. Neural Regen Res 2021; 17:1131-1137. [PMID: 34558542 PMCID: PMC8552849 DOI: 10.4103/1673-5374.324853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Acellular nerve allografts conducted via chemical extraction have achieved satisfactory results in bridging whole facial nerve defects clinically, both in terms of branching a single trunk and in connecting multiple branches of an extratemporal segment. However, in the clinical treatment of facial nerve defects, allogeneic donors are limited. In this experiment, we exposed the left trunk and multiple branches of the extratemporal segment in six rhesus monkeys and dissected a gap of 25 mm to construct a monkey model of a whole left nerve defect. Six monkeys were randomly assigned to an autograft group or a xenogeneic acellular nerve graft group. In the autograft group, the 25-mm whole facial nerve defect was immediately bridged using an autogenous ipsilateral great auricular nerve, and in the xenogeneic acellular nerve graft group, this was done using a xenogeneic acellular nerve graft with trunk-branches. Examinations of facial symmetry, nerve-muscle electrophysiology, retrograde transport of labeled neuronal tracers, and morphology of the regenerated nerve and target muscle at 8 months postoperatively showed that the faces of the monkey appeared to be symmetrical in the static state and slightly asymmetrical during facial movement, and that they could actively close their eyelids completely. The degree of recovery from facial paralysis reached House-Brackmann grade II in both groups. Compound muscle action potentials were recorded and orbicularis oris muscles responded to electro-stimuli on the surgical side in each monkey. FluoroGold-labeled neurons could be detected in the facial nuclei on the injured side. Immunohistochemical staining showed abundant neurofilament-200-positive axons and soluble protein-100-positive Schwann cells in the regenerated nerves. A large number of mid-graft myelinated axons were observed via methylene blue staining and a transmission electron microscope. Taken together, our data indicate that xenogeneic acellular nerve grafts from minipigs are safe and effective for repairing whole facial nerve defects in rhesus monkeys, with an effect similar to that of autologous nerve transplantation. Thus, a xenogeneic acellular nerve graft may be a suitable choice for bridging a whole facial nerve defect if no other method is available. The study was approved by the Laboratory Animal Management Committee and the Ethics Review Committee of the Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, China (approval No. 2018-D-1) on March 15, 2018.
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Affiliation(s)
- Guo-Chen Zhu
- Department of Otorhinolaryngology-Head and Neck Surgery, Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University; Department of Otorhinolaryngology-Head and Neck Surgery, Affiliated Wuxi Clinical College of Nantong University, Wuxi, Jiangsu Province, China
| | - Da-Jiang Xiao
- Department of Otorhinolaryngology-Head and Neck Surgery, Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University; Department of Otorhinolaryngology-Head and Neck Surgery, Affiliated Wuxi Clinical College of Nantong University, Wuxi, Jiangsu Province, China
| | - Bi-Wen Zhu
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong Province, China
| | - Yan Xiao
- Department of Pathology, Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, Jiangsu Province, China
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Ma Y, Gao H, Wang H, Cao X. Engineering topography: effects on nerve cell behaviors and applications in peripheral nerve repair. J Mater Chem B 2021; 9:6310-6325. [PMID: 34302164 DOI: 10.1039/d1tb00782c] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
There have been extensive studies on the application of topography in the field of tissue repair. A common feature of these studies is that the existence of topological structures in tissue repair scaffolds can effectively regulate a series of behaviors of cells and play a positive role in a variety of tissue repair and regeneration processes. This review focuses on the application of topography in the field of peripheral nerve repair. The integration of the topological structure and biomaterials to construct peripheral nerve conduits to mimic a natural peripheral nerve structure has an important role in promoting the recovery of peripheral nerve function. Therefore, in this review, we systematically analysed the structure of peripheral nerves and summarized the effects of topographic cues of different scales and shapes on the behaviors of nerve cells, including cell morphology, adhesion, proliferation, migration and differentiation. Furthermore, the application and performance of scaffolds with different topological structures in peripheral nerve repair are also discussed. This systematic summary may help to provide more effective strategies for peripheral nerve regeneration (PNR) and shed light on nervous tissue engineering and regenerative medicine.
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Affiliation(s)
- Ying Ma
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China.
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Jiao H, Song Y, Huang J, Li D, Hu Y. [ In vivo degradation and histocompatibility of modified chitosan based on conductive composite nerve conduit]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2021; 35:769-775. [PMID: 34142506 DOI: 10.7507/1002-1892.202101088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To investigate the in vivo degradation and histocompatibility of modified chitosan based on conductive composite nerve conduit, so as to provide a new scaffold material for the construction of tissue engineered nerve. Methods The nano polypyrrole (PPy) was synthesized by microemulsion polymerization, blended with chitosan, and then formed conduit by injecting the mixed solution into a customized conduit formation model. After freeze-drying and deacidification, the nano PPy/chitosan composite conduit (CP conduit) was prepared. Then the CP conduits with different acetyl degree were resulted undergoing varying acetylation for 30, 60, and 90 minutes (CAP1, CAP2, CAP3 conduits). Fourier infrared absorption spectrum and scanning electron microscopy (SEM) were used to identify the conduits. And the conductivity was measured by four-probe conductometer. The above conduits were implanted after the subcutaneous fascial tunnels were made symmetrically on both sides of the back of 30 female Sprague Dawley rats. At 2, 4, 6, 8, 10, and 12 weeks after operation, the morphology, the microstructure, and the degradation rate were observed and measured to assess the in vivo degradation of conduits. HE staining and anti-macrophage immunofluorescence staining were performed to observe the histocompatibility in vivo. Results The characteristic peaks of the amide Ⅱ band around 1 562 cm -1 appeared after being acetylated, indicating that the acetylation modification of chitosan was successful. There was no significant difference in conductivity between conduits ( P>0.05). SEM observation showed that the surfaces of the conduits in all groups were similar with relatively smooth surface and compact structure. After the conduits were implanted into the rats, with the extension of time, all conduits were collapsed, especially on the CAP3 conduit. All conduits had different degrees of mass loss, and the higher the degree of acetylation, the greater the mass change ( P<0.05). SEM observation showed that there were more pores at 12 weeks after implantation, and the pores showed an increasing trend as the degree of acetylation increased. Histological observation showed that there were more macrophages and lymphocytes infiltration in each group at the early stage. With the extension of implantation time, lymphocytes decreased, fibroblasts increased, and collagen fibers proliferated significantly. Conclusion The modified chitosan basedon conductive composite nerve conduit made of nano-PPy/chitosan composite with different acetylation degrees has good biocompatibility, conductivity, and biodegradability correlated with acetylation degree in vivo, which provide a new scaffold material for the construction of tissue engineered nerve.
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Affiliation(s)
- Haishan Jiao
- Department of Clinical Medicine, Suzhou Vocational Health College, Suzhou Jiangsu, 215009, P.R.China
| | - Yuening Song
- Department of Clinical Medicine, Suzhou Vocational Health College, Suzhou Jiangsu, 215009, P.R.China
| | - Jian Huang
- Department of Clinical Medicine, Suzhou Vocational Health College, Suzhou Jiangsu, 215009, P.R.China
| | - Dongyin Li
- Department of Clinical Medicine, Suzhou Vocational Health College, Suzhou Jiangsu, 215009, P.R.China
| | - Yi Hu
- Department of Pharmacy, Suzhou Vocational Health College, Suzhou Jiangsu, 215009, P.R.China
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Gregory H, Phillips JB. Materials for peripheral nerve repair constructs: Natural proteins or synthetic polymers? Neurochem Int 2020; 143:104953. [PMID: 33388359 DOI: 10.1016/j.neuint.2020.104953] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 12/13/2022]
Abstract
The efficacious repair of severe peripheral nerve injuries is currently an unmet clinical need, and biomaterial constructs offer a promising approach to help promote nerve regeneration. Current research focuses on the development of more sophisticated constructs with complex architecture and the addition of regenerative agents to encourage timely reinnervation and promote functional recovery. This review surveyed the present landscape of nerve repair construct literature with a focus on six selected materials that are frequently encountered in this application: the natural proteins collagen, chitosan, and silk, and the synthetic polymers poly-ε-caprolactone (PCL), poly-lactic-co-glycolic acid (PLGA) and poly-glycolic acid (PGA). This review also investigated the use of cell therapy in nerve repair constructs, and in all instances concentrated on publications reporting constructs developed and tested in vivo in the last five years (2015-2020). Across the selected literature, the popularity of natural proteins and synthetic polymers appears to be broadly equivalent, with a similar number of studies reporting successful outcomes in vivo. Both material types are also utilised as vehicles for cell therapy, which has much potential to improve the results of nerve bridging for treating longer gaps.
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Affiliation(s)
- Holly Gregory
- Department of Pharmacology, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK; UCL Centre for Nerve Engineering, University College London, London, UK.
| | - James B Phillips
- Department of Pharmacology, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK; UCL Centre for Nerve Engineering, University College London, London, UK
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Functionalized nerve conduits for peripheral nerve regeneration: A literature review. HAND SURGERY & REHABILITATION 2020; 39:343-351. [PMID: 32485240 DOI: 10.1016/j.hansur.2020.05.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 05/21/2020] [Accepted: 05/26/2020] [Indexed: 12/17/2022]
Abstract
Functionalized neurotube are a third-generation of conduits with chemical or architectural bioactivity developed for axonal proliferation. The goal of this review is to provide a synopsis of the functionalized nerve conduits described in the literature according to their chemical and architectural properties and answer two questions: what are their mechanisms of action? Has their efficacy been proven compared to the autologous nerve graft? Our literature review relates all kind of conduits corresponding to functionalized neurotubes in peripheral nerve regeneration found in Medline and PubMed Central. Studies developing nerve gaps, chemotactic or structural features promoting each conduit, results, efficiency were selected. Fifty-five studies were selected and classified in: (a) intraluminal neurotrophic factors; (b) cell-based therapy (combined-in-vein muscles, amniotic membrane, Schwann cells, stem cells); (c) extracellular matrix proteins; (d) tissue engineering; (e) bioimplants. Functionalized neurotubes showed significantly better functional results than after end-to-end nerve suture. No studies can be able to show that neurotube results were better than autologous nerve graft results. We included all studies regardless of effectives to evaluate quality of reinnervation with modern tubulization. Functionalized neurotubes promote basic conduits for peripheral nerve regeneration. Thanks to bioengineering and microsurgery improvement, further neurotubes could promote best level of regeneration and functional recovery to successfully bridge a critical nerve gap.
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19
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Manoukian OS, Baker JT, Rudraiah S, Arul MR, Vella AT, Domb AJ, Kumbar SG. Functional polymeric nerve guidance conduits and drug delivery strategies for peripheral nerve repair and regeneration. J Control Release 2019; 317:78-95. [PMID: 31756394 DOI: 10.1016/j.jconrel.2019.11.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/16/2019] [Accepted: 11/18/2019] [Indexed: 12/25/2022]
Abstract
Peripheral nerve injuries can be extremely debilitating, resulting in sensory and motor loss-of-function. Endogenous repair is limited to non-severe injuries in which transection of nerves necessitates surgical intervention. Traditional treatment approaches include the use of biological grafts and alternative engineering approaches have made progress. The current article serves as a comprehensive, in-depth perspective on peripheral nerve regeneration, particularly nerve guidance conduits and drug delivery strategies. A detailed background of peripheral nerve injury and repair pathology, and an in-depth look into augmented nerve regeneration, nerve guidance conduits, and drug delivery strategies provide a state-of-the-art perspective on the field.
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Affiliation(s)
- Ohan S Manoukian
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA; Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Jiana T Baker
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Swetha Rudraiah
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA; Department of Pharmaceutical Sciences, University of Saint Joseph, Hartford, CT, USA
| | - Michael R Arul
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Anthony T Vella
- Department of Department of Immunology, University of Connecticut Health, Farmington, CT, USA
| | - Abraham J Domb
- Institute of Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Sangamesh G Kumbar
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA; Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA.
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20
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Teleanu RI, Gherasim O, Gherasim TG, Grumezescu V, Grumezescu AM, Teleanu DM. Nanomaterial-Based Approaches for Neural Regeneration. Pharmaceutics 2019; 11:E266. [PMID: 31181719 PMCID: PMC6630326 DOI: 10.3390/pharmaceutics11060266] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 12/13/2022] Open
Abstract
Mechanical, thermal, chemical, or ischemic injury of the central or peripheral nervous system results in neuron loss, neurite damage, and/or neuronal dysfunction, almost always accompanied by sensorimotor impairment which alters the patient's life quality. The regenerative strategies for the injured nervous system are currently limited and mainly allow partial functional recovery, so it is necessary to develop new and effective approaches for nervous tissue regenerative therapy. Nanomaterials based on inorganic or organic and composite or hybrid compounds with tunable physicochemical properties and functionality proved beneficial for the transport and delivery/release of various neuroregenerative-relevant biomolecules or cells. Within the following paragraphs, we will emphasize that nanomaterial-based strategies (including nanosized and nanostructured biomaterials) represent a promising alternative towards repairing and regenerating the injured nervous system.
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Affiliation(s)
- Raluca Ioana Teleanu
- "Victor Gomoiu" Clinical Children's Hospital, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
| | - Oana Gherasim
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 011061 Bucharest, Romania.
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania.
| | - Tudor George Gherasim
- National Institute of Neurology and Neurovascular Diseases, 077160 Bucharest, Romania.
| | - Valentina Grumezescu
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania.
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 011061 Bucharest, Romania.
| | - Daniel Mihai Teleanu
- Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
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Boecker A, Daeschler SC, Kneser U, Harhaus L. Relevance and Recent Developments of Chitosan in Peripheral Nerve Surgery. Front Cell Neurosci 2019; 13:104. [PMID: 31019452 PMCID: PMC6458244 DOI: 10.3389/fncel.2019.00104] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 02/28/2019] [Indexed: 12/20/2022] Open
Abstract
Developments in tissue engineering yield biomaterials with different supporting strategies to promote nerve regeneration. One promising material is the naturally occurring chitin derivate chitosan. Chitosan has become increasingly important in various tissue engineering approaches for peripheral nerve reconstruction, as it has demonstrated its potential to interact with regeneration associated cells and the neural microenvironment, leading to improved axonal regeneration and less neuroma formation. Moreover, the physiological properties of its polysaccharide structure provide safe biodegradation behavior in the absence of negative side effects or toxic metabolites. Beneficial interactions with Schwann cells (SC), inducing differentiation of mesenchymal stromal cells to SC-like cells or creating supportive conditions during axonal recovery are only a small part of the effects of chitosan. As a result, an extensive body of literature addresses a variety of experimental strategies for the different types of nerve lesions. The different concepts include chitosan nanofibers, hydrogels, hollow nerve tubes, nerve conduits with an inner chitosan layer as well as hybrid architectures containing collagen or polyglycolic acid nerve conduits. Furthermore, various cell seeding concepts have been introduced in the preclinical setting. First translational concepts with hollow tubes following nerve surgery already transferred the promising experimental approach into clinical practice. However, conclusive analyses of the available data and the proposed impact on the recovery process following nerve surgery are currently lacking. This review aims to give an overview on the physiologic properties of chitosan, to evaluate its effect on peripheral nerve regeneration and discuss the future translation into clinical practice.
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Affiliation(s)
- A Boecker
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - S C Daeschler
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - U Kneser
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - L Harhaus
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
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