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Lysak A, Farnebo S, Geuna S, Dahlin LB. Muscle preservation in proximal nerve injuries: a current update. J Hand Surg Eur Vol 2024; 49:773-782. [PMID: 38819009 DOI: 10.1177/17531934231216646] [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] [Indexed: 06/01/2024]
Abstract
Optimal recovery of muscle function after proximal nerve injuries remains a complex and challenging problem. After a nerve injury, alterations in the affected muscles lead to atrophy, and later degeneration and replacement by fat-fibrous tissues. At present, several different strategies for the preservation of skeletal muscle have been reported, including various sets of physical exercises, muscle massage, physical methods (e.g. electrical stimulation, magnetic field and laser stimulation, low-intensity pulsed ultrasound), medicines (e.g. nutrients, natural and chemical agents, anti-inflammatory and antioxidants, hormones, enzymes and enzyme inhibitors), regenerative medicine (e.g. growth factors, stem cells and microbiota) and surgical procedures (e.g. supercharge end-to-side neurotization). The present review will focus on methods that aimed to minimize the damage to muscles after denervation based on our present knowledge.
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Affiliation(s)
- Andrii Lysak
- Institute of Traumatology and Orthopedics of National Academy of Medical Sciences of Ukraine, Kyiv, Ukraine
| | - Simon Farnebo
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Department of Hand Surgery, Plastic Surgery and Burns, Linköping University Hospital, Linköping, Sweden
| | - Stefano Geuna
- Department of Clinical and Biological Sciences; Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Torino, Italy
| | - Lars B Dahlin
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Department of Translational Medicine - Hand Surgery, Lund University, Malmö, Sweden
- Department of Hand Surgery, Skåne University Hospital, Malmö, Sweden
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2
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Wu Z, Ren Z, Gao R, Sun K, Sun F, Liu T, Zheng S, Wang W, Zhang G. Impact of subthalamic nucleus deep brain stimulation at different frequencies on neurogenesis in a rat model of Parkinson's disease. Heliyon 2024; 10:e30730. [PMID: 38784548 PMCID: PMC11112288 DOI: 10.1016/j.heliyon.2024.e30730] [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: 04/23/2024] [Accepted: 05/02/2024] [Indexed: 05/25/2024] Open
Abstract
Neurogenesis, play a vital role in neuronal plasticity of adult mammalian brains, and its dysregulation is present in the pathophysiology of Parkinson's disease (PD). While subthalamic nucleus deep brain stimulation (STN-DBS) at various frequencies has been proven effective in alleviating PD symptoms, its influence on neurogenesis remains unclear. This study aimed to investigate the effects of 1-week electrical stimulation at frequencies of 60Hz, 130Hz, and 180Hz on neurogenesis in the subventricular zone (SVZ) of PD rats. A hemiparkinsonian rat model was established using 6-hydroxydopamine and categorized into six groups: control, PD, sham stimulation, 60Hz stimulation, 130Hz stimulation, and 180Hz stimulation. Motor function was assessed using the open field test and rotarod test after one week of STN-DBS at different frequencies. Tyrosine hydroxylase (TH) expression in brain tissue was analyzed via Western blot and immunohistochemistry. Immunofluorescence analysis was conducted to evaluate the expression of BrdU/Sox2, BrdU/GFAP, Ki67/GFAP, and BrdU/DCX in bilateral SVZ and the rostral migratory stream (RMS). Our findings revealed that high-frequency STN-DBS improved motor function. Specifically, stimulation at 130Hz increased dopaminergic neuron survival in the PD rat model, while significantly enhancing the proliferation of neural stem cells (NSCs) and neuroblasts in bilateral SVZ. Moreover, this stimulation effectively facilitated the generation of new NSCs in the ipsilateral RMS and triggered the emergence of fresh neuroblasts in bilateral RMS, with notable presence within the lesioned striatum. Conversely, electrical stimulation at 60Hz and 180Hz did not exhibit comparable effects. The observed promotion of neurogenesis in PD rats following STN-DBS provides valuable insights into the mechanistic basis of this therapeutic approach for PD.
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Affiliation(s)
- Zheng Wu
- Department of Functional Neurosurgery, Xuanwu Hospital Capital Medical University, Beijing, China
- Key Laboratory of Neurodegenerative Diseases (Capital Medical University), Ministry of Education, Beijing, China
| | - Zhiwei Ren
- Department of Functional Neurosurgery, Xuanwu Hospital Capital Medical University, Beijing, China
- Key Laboratory of Neurodegenerative Diseases (Capital Medical University), Ministry of Education, Beijing, China
| | - Runshi Gao
- Department of Functional Neurosurgery, Xuanwu Hospital Capital Medical University, Beijing, China
- Key Laboratory of Neurodegenerative Diseases (Capital Medical University), Ministry of Education, Beijing, China
| | - Ke Sun
- Functional Neurosurgery Department, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Fangling Sun
- Department of Experimental Animal Laboratory, Xuan-Wu Hospital of Capital Medical University, Beijing, China
| | - Tingting Liu
- Department of Experimental Animal Laboratory, Xuan-Wu Hospital of Capital Medical University, Beijing, China
| | - Songyang Zheng
- Department of Experimental Animal Laboratory, Xuan-Wu Hospital of Capital Medical University, Beijing, China
| | - Wen Wang
- Department of Experimental Animal Laboratory, Xuan-Wu Hospital of Capital Medical University, Beijing, China
| | - Guojun Zhang
- Functional Neurosurgery Department, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
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3
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Eftekhari BS, Song D, Janmey PA. Electrical Stimulation of Human Mesenchymal Stem Cells on Conductive Substrates Promotes Neural Priming. Macromol Biosci 2023; 23:e2300149. [PMID: 37571815 PMCID: PMC10880582 DOI: 10.1002/mabi.202300149] [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: 04/06/2023] [Revised: 06/29/2023] [Indexed: 08/13/2023]
Abstract
Electrical stimulation (ES) within a conductive scaffold is potentially beneficial in encouraging the differentiation of stem cells toward a neuronal phenotype. To improve stem cell-based regenerative therapies, it is essential to use electroconductive scaffolds with appropriate stiffnesses to regulate the amount and location of ES delivery. Herein, biodegradable electroconductive substrates with different stiffnesses are fabricated from chitosan-grafted-polyaniline (CS-g-PANI) copolymers. Human mesenchymal stem cells (hMSCs) cultured on soft conductive scaffolds show a morphological change with significant filopodial elongation after electrically stimulated culture along with upregulation of neuronal markers and downregulation of glial markers. Compared to stiff conductive scaffolds and non-conductive CS scaffolds, soft conductive CS-g-PANI scaffolds promote increased expression of microtubule-associated protein 2 (MAP2) and neurofilament heavy chain (NF-H) after application of ES. At the same time, there is a decrease in the expression of the glial markers glial fibrillary acidic protein (GFAP) and vimentin after ES. Furthermore, the elevation of intracellular calcium [Ca2+ ] during spontaneous, cell-generated Ca2+ transients further suggests that electric field stimulation of hMSCs cultured on conductive substrates can promote a neural-like phenotype. The findings suggest that the combination of the soft conductive CS-g-PANI substrate and ES is a promising new tool for enhancing neuronal tissue engineering outcomes.
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Affiliation(s)
| | - Dawei Song
- Department of Physiology and Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Paul A. Janmey
- Department of Bioengineering, University of Pennsylvania, Philadelphia, USA
- Department of Physiology and Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, PA, USA
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4
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Sharifi M, Farahani MK, Salehi M, Atashi A, Alizadeh M, Kheradmandi R, Molzemi S. Exploring the Physicochemical, Electroactive, and Biodelivery Properties of Metal Nanoparticles on Peripheral Nerve Regeneration. ACS Biomater Sci Eng 2023; 9:106-138. [PMID: 36545927 DOI: 10.1021/acsbiomaterials.2c01216] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Despite the advances in the regeneration/rehabilitation field of damaged tissues, the functional recovery of peripheral nerves (PNs), especially in a long gap injury, is considered a great medical challenge. Recent progress in nanomedicine has provided great hope for PN regeneration through the strategy of controlling cell behavior by metal nanoparticles individually or loaded on scaffolds/conduits. Despite the confirmed toxicity of metal nanoparticles due to long-term accumulation in nontarget tissues, they play a role in the damaged PN regeneration based on the topography modification of scaffolds/conduits, enhancing neurotrophic factor secretion, the ion flow improvement, and the regulation of electrical signals. Determining the fate of neural progenitor cells would be a major achievement in PN regeneration, which seems to be achievable by metal nanoparticles through altering cell vital approaches and controlling their functions. Therefore, in this literature, an attempt was made to provide an overview of the effective activities of metal nanoparticles on the PN regeneration, until the vital clues of the PN regeneration and how they are changed by metal nanoparticles are revealed to the researcher.
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Affiliation(s)
- Majid Sharifi
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran.,Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Mohammad Kamalabadi Farahani
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran.,Tissue Engineering and Stem Cells Research Center, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Amir Atashi
- Stem Cell and Tissue Engineering Research Center, Faculty of Allied Medical Sciences, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Morteza Alizadeh
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Rasoul Kheradmandi
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran.,Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Sahar Molzemi
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran.,Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
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5
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McAvoy M, Doloff JC, Khan OF, Rosen J, Langer R, Anderson DG. Vascularized Muscle Flap to Reduce Wound Breakdown During Flexible Electrode-Mediated Functional Electrical Stimulation After Peripheral Nerve Injury. Front Neurol 2020; 11:644. [PMID: 32793094 PMCID: PMC7385241 DOI: 10.3389/fneur.2020.00644] [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: 04/08/2020] [Accepted: 05/29/2020] [Indexed: 11/15/2022] Open
Abstract
The success of devices delivering functional electrical stimulation (FES) has been hindered by complications related to implants including skin breakdown and subsequent wound dehiscence. Our hypothesis was that a vascularized muscle flap along the dorsal surface of an epimysial electrode would prevent skin breakdown during FES therapy to treat atrophy of the gastrocnemius muscle during peripheral nerve injury. Resection of a tibial nerve segment with subsequent electrode implantation on the dorsal surfaces of the gastrocnemius muscle was performed on ten Lewis rats. In five rats, the biceps femoris (BF) muscle was dissected and placed along the dorsal surface of the electrode (Flap group). The other five animals did not undergo flap placement (No Flap group). All animals were treated with daily FES therapy for 2 weeks and degree of immune response and skin breakdown were evaluated. The postoperative course of one animal in the No Flap group was complicated by complete wound dehiscence requiring euthanasia of the animal on postoperative day 4. The remaining 4 No Flap animals showed evidence of ulceration at the implant by postoperative day 7. The 5 animals in the Flap group did not have ulcerative lesions. Excised tissue at postoperative day 14 examined by histology and in vivo Imaging System (IVIS) showed decreased implant-induced inflammation in the Flap group. Expression of specific markers for local foreign body response were also decreased in the Flap group.
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Affiliation(s)
- Malia McAvoy
- Harvard-MIT Division of Health Sciences and Technology, Harvard Medical School, Massachusetts Institute of Technology, Boston, MA, United States
| | - Joshua C Doloff
- Department of Biomedical Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, United States.,Department of Materials Science and Engineering, Institute of NanoBioTechnology, Johns Hopkins University, Baltimore, MD, United States
| | - Omar F Khan
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada.,Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Joseph Rosen
- Dartmouth-Hitchcock Medical Center, Geisel School of Medicine, Lebanon, NH, United States
| | - Robert Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States.,Department of Biomedical and Materials Science Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute and the Institute for NanoBioTechnology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Daniel G Anderson
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States.,Department of Biomedical and Materials Science Engineering, Translational Tissue Engineering Center, Wilmer Eye Institute and the Institute for NanoBioTechnology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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Kim HJ, Lee JS, Park JM, Lee S, Hong SJ, Park JS, Park KH. Fabrication of Nanocomposites Complexed with Gold Nanoparticles on Polyaniline and Application to Their Nerve Regeneration. ACS APPLIED MATERIALS & INTERFACES 2020; 12:30750-30760. [PMID: 32539331 DOI: 10.1021/acsami.0c05286] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Electrically conductive materials can stimulate stem cells through electric shock and thereby contribute to the regulation of cell proliferation and differentiation. Recently, polymer-metal complexes composed of polyaniline and gold nanoparticles have emerged as novel candidates for use in regenerative medicine. By mixing two different materials, such composites maximize the benefits while alleviating the disadvantages of using either material alone. Based on their excellent conductivity, these complexes can be applied to nerve regeneration using stem cells. In this study, we investigated a method for producing hybrid nanocomposites by complexing gold nanoparticles to polyaniline and tested the resultant composites in a model of nerve regeneration. We manipulated the shape, size, and electrical conductivity of the hybrid composites by compounding the component materials at various ratios. The most efficient nanocomposite was named conductive reinforced nanocomposites (CRNc's). When the CRNc was delivered directly to cells, no cytotoxicity was observed. After the intracellular delivery of the CRNc, the stem cells were electrically stimulated using an electroporator. As a result of performing mRNA-sequencing (Seq) analysis after electrical stimulation (ES) of the CRNc-internalized cells, it was confirmed that the CRNc-internalized cells have a pattern similar to that of the positive group-induced neuron cells. In particular, microtubule-associated protein 2 is more than twice that of the control group (negative control), and the nerve fiber protein is strongly expressed as in the positive control group. In addition, we verified that neural differentiation progressed by monitoring the growth of neurites from stem cells. Together, these findings show that the CRNc can be used to induce the formation of neuron-like cells by applying ES to stem cells.
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Affiliation(s)
- Hye Jin Kim
- Laboratory of Nano-regenerative Medical Engineering, Department of Biomedical Science, College of Life Science, CHA University, 618, CHA Biocomplex, Sampyeong-Dong, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Jung Sun Lee
- Laboratory of Nano-regenerative Medical Engineering, Department of Biomedical Science, College of Life Science, CHA University, 618, CHA Biocomplex, Sampyeong-Dong, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Jong Min Park
- Laboratory of Nano-regenerative Medical Engineering, Department of Biomedical Science, College of Life Science, CHA University, 618, CHA Biocomplex, Sampyeong-Dong, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Sujin Lee
- Laboratory of Nano-regenerative Medical Engineering, Department of Biomedical Science, College of Life Science, CHA University, 618, CHA Biocomplex, Sampyeong-Dong, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Suk Jun Hong
- Laboratory of Nano-regenerative Medical Engineering, Department of Biomedical Science, College of Life Science, CHA University, 618, CHA Biocomplex, Sampyeong-Dong, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Ji Sun Park
- Laboratory of Nano-regenerative Medical Engineering, Department of Biomedical Science, College of Life Science, CHA University, 618, CHA Biocomplex, Sampyeong-Dong, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Keun-Hong Park
- Laboratory of Nano-regenerative Medical Engineering, Department of Biomedical Science, College of Life Science, CHA University, 618, CHA Biocomplex, Sampyeong-Dong, Bundang-gu, Seongnam-si 13488, Republic of Korea
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Sowa Y, Kishida T, Tomita K, Adachi T, Numajiri T, Mazda O. Involvement of PDGF-BB and IGF-1 in Activation of Human Schwann Cells by Platelet-Rich Plasma. Plast Reconstr Surg 2019; 144:1025e-1036e. [PMID: 31764650 DOI: 10.1097/prs.0000000000006266] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Platelet-rich plasma contains high concentrations of growth factors that stimulate proliferation and migration of various cell types. Earlier experiments demonstrated that local platelet-rich plasma administration activates Schwann cells to improve axonal regeneration at a transected peripheral nerve lesion. However, the optimal concentration of human platelet-rich plasma for activation of human Schwann cells has not been determined, and mechanisms by which platelet-rich plasma activates Schwann cells remain to be clarified. METHODS Human Schwann cells were cultured with various concentrations of platelet-rich plasma in 5% fetal bovine serum/Dulbecco's Modified Eagle Medium. Cell viability, microchemotaxis, flow cytometry, and quantitative real-time polymerase chain reaction assays were performed to assess proliferation, migration, cell cycle, and neurotrophic factor expression of the human Schwann cells, respectively. Human Schwann cells were co-cultured with neuronal cells to assess their capacity to induce neurite extension. Neutralizing antibodies for platelet-derived growth factor-BB (PDGF-BB) and insulin-like growth factor-1 (IGF-1) were added to the culture to estimate contribution of these cytokines to human Schwann cell stimulation by platelet-rich plasma. RESULTS An addition of platelet-rich plasma at 5% strongly elevated proliferation, migration, and neurotrophic factor production of human Schwann cells. Both PDGF-BB and IGF-1 may be involved in mitogenic effect of platelet-rich plasma on human Schwann cells, and PDGF-BB may also play an important role in the migration-inducing effect of platelet-rich plasma. Neutralization of both PDGF-BB and IGF-1 cancelled the promoting effect of platelet-rich plasma on neurite-inducing activity of human Schwann cells. CONCLUSION This study may suggest the optimal concentration of platelet-rich plasma for human Schwann cell stimulation and potential mechanisms underlying the activation of human Schwann cells by platelet-rich plasma, which may be quite useful for platelet-rich plasma therapy for peripheral nerve regeneration. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, V.
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Affiliation(s)
- Yoshihiro Sowa
- From the Departments of Plastic and Reconstructive Surgery, Immunology, and Dental Medicine, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine; and the Department of Plastic Surgery, Graduate School of Medicine, Osaka University
| | - Tsunao Kishida
- From the Departments of Plastic and Reconstructive Surgery, Immunology, and Dental Medicine, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine; and the Department of Plastic Surgery, Graduate School of Medicine, Osaka University
| | - Koichi Tomita
- From the Departments of Plastic and Reconstructive Surgery, Immunology, and Dental Medicine, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine; and the Department of Plastic Surgery, Graduate School of Medicine, Osaka University
| | - Tetsuya Adachi
- From the Departments of Plastic and Reconstructive Surgery, Immunology, and Dental Medicine, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine; and the Department of Plastic Surgery, Graduate School of Medicine, Osaka University
| | - Toshiaki Numajiri
- From the Departments of Plastic and Reconstructive Surgery, Immunology, and Dental Medicine, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine; and the Department of Plastic Surgery, Graduate School of Medicine, Osaka University
| | - Osam Mazda
- From the Departments of Plastic and Reconstructive Surgery, Immunology, and Dental Medicine, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine; and the Department of Plastic Surgery, Graduate School of Medicine, Osaka University
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Srinivasan S, Vyas K, McAvoy M, Calvaresi P, Khan OF, Langer R, Anderson DG, Herr H. Polyimide Electrode-Based Electrical Stimulation Impedes Early Stage Muscle Graft Regeneration. Front Neurol 2019; 10:252. [PMID: 30967830 PMCID: PMC6438882 DOI: 10.3389/fneur.2019.00252] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 02/25/2019] [Indexed: 01/22/2023] Open
Abstract
Given the increasing use of regenerative free muscle flaps for various reconstructive procedures and neuroprosthetic applications, there is great interest and value in their enhanced regeneration, revascularization, and reinnervation for improved functional recovery. Here, we implant polyimide-based mircroelectrodes on free flap grafts and perform electrical stimulation for 6 weeks in a murine model. Using electrophysiological and histological assessments, we compare outcomes of stimulated grafts with unstimulated control grafts. We find delayed reinnervation and abnormal electromyographic (EMG) signals, with significantly more polyphasia, lower compound muscle action potentials and higher fatigability in stimulated animals. These metrics are suggestive of myopathy in the free flap grafts stimulated with the electrode. Additionally, active inflammatory processes and partial necrosis are observed in grafts stimulated with the implanted electrode. The results suggest that under this treatment protocol, implanted epimysial electrodes and electrical stimulation to deinnervated, and devascularized flaps during the early recovery phase may be detrimental to regeneration. Future work should determine the optimal implantation and stimulation window for accelerating free muscle graft regeneration.
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Affiliation(s)
- Shriya Srinivasan
- Harvard/MIT Health Sciences and Technology, Harvard Medical School, Boston, MA, United States
- Center for Extreme Bionics, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Keval Vyas
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Malia McAvoy
- Harvard/MIT Health Sciences and Technology, Harvard Medical School, Boston, MA, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Peter Calvaresi
- Center for Extreme Bionics, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Omar F. Khan
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Robert Langer
- Harvard/MIT Health Sciences and Technology, Harvard Medical School, Boston, MA, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Daniel G. Anderson
- Harvard/MIT Health Sciences and Technology, Harvard Medical School, Boston, MA, United States
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Hugh Herr
- Center for Extreme Bionics, Massachusetts Institute of Technology, Cambridge, MA, United States
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9
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Ng TK, Yang Q, Fortino VR, Lai NYK, Carballosa CM, Greenberg JM, Choy KW, Pelaez D, Pang CP, Cheung HS. MicroRNA-132 directs human periodontal ligament-derived neural crest stem cell neural differentiation. J Tissue Eng Regen Med 2019; 13:12-24. [PMID: 30352481 DOI: 10.1002/term.2759] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 09/02/2018] [Accepted: 10/18/2018] [Indexed: 02/05/2023]
Abstract
Neurogenesis is the basis of stem cell tissue engineering and regenerative medicine for central nervous system (CNS) disorders. We have established differentiation protocols to direct human periodontal ligament-derived stem cells (PDLSCs) into neuronal lineage, and we recently isolated the neural crest subpopulation from PDLSCs, which are pluripotent in nature. Here, we report the neural differentiation potential of these periodontal ligament-derived neural crest stem cells (NCSCs) as well as its microRNA (miRNA) regulatory mechanism and function in NCSC neural differentiation. NCSCs, treated with basic fibroblast growth factor and epidermal growth factor-based differentiation medium for 24 days, expressed neuronal and glial markers (βIII-tubulin, neurofilament, NeuN, neuron-specific enolase, GFAP, and S100) and exhibited glutamate-induced calcium responses. The global miRNA expression profiling identified 60 upregulated and 19 downregulated human miRNAs after neural differentiation, and the gene ontology analysis of the miRNA target genes confirmed the neuronal differentiation-related biological functions. In addition, overexpression of miR-132 in NCSCs promoted the expression of neuronal markers and downregulated ZEB2 protein expression. Our results suggested that the pluripotent NCSCs from human periodontal ligament can be directed into neural lineage, which demonstrate its potential in tissue engineering and regenerative medicine for CNS disorders.
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Affiliation(s)
- Tsz Kin Ng
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou, Guangdong, China
- Shantou University Medical College, Shantou, Guangdong, China
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Kowloon, Hong Kong
- Geriatric Research, Education and Clinical Center, Miami Veterans Affairs Medical Center, Miami, Florida
| | - Qichen Yang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Kowloon, Hong Kong
| | - Veronica R Fortino
- Department of Biomedical Engineering, College of Engineering, University of Miami, Coral Gables, Florida
- Department of Biological Sciences, Nova Southeastern University, Fort Lauderdale, Florida
| | - Nikky Yuk-Ki Lai
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Kowloon, Hong Kong
| | - Carlos M Carballosa
- Department of Biomedical Engineering, College of Engineering, University of Miami, Coral Gables, Florida
| | - Jordan M Greenberg
- Department of Biomedical Engineering, College of Engineering, University of Miami, Coral Gables, Florida
| | - Kwong Wai Choy
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Daniel Pelaez
- Geriatric Research, Education and Clinical Center, Miami Veterans Affairs Medical Center, Miami, Florida
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami, Miami, Florida
| | - Chi Pui Pang
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou, Guangdong, China
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Kowloon, Hong Kong
| | - Herman S Cheung
- Geriatric Research, Education and Clinical Center, Miami Veterans Affairs Medical Center, Miami, Florida
- Department of Biomedical Engineering, College of Engineering, University of Miami, Coral Gables, Florida
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10
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Hsu CC, Serio A, Amdursky N, Besnard C, Stevens MM. Fabrication of Hemin-Doped Serum Albumin-Based Fibrous Scaffolds for Neural Tissue Engineering Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:5305-5317. [PMID: 29381329 PMCID: PMC5814958 DOI: 10.1021/acsami.7b18179] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 01/12/2018] [Indexed: 05/06/2023]
Abstract
Neural tissue engineering (TE) represents a promising new avenue of therapy to support nerve recovery and regeneration. To recreate the complex environment in which neurons develop and mature, the ideal biomaterials for neural TE require a number of properties and capabilities including the appropriate biochemical and physical cues to adsorb and release specific growth factors. Here, we present neural TE constructs based on electrospun serum albumin (SA) fibrous scaffolds. We doped our SA scaffolds with an iron-containing porphyrin, hemin, to confer conductivity, and then functionalized them with different recombinant proteins and growth factors to ensure cell attachment and proliferation. We demonstrated the potential for these constructs combining topographical, biochemical, and electrical stimuli by testing them with clinically relevant neural populations derived from human induced pluripotent stem cells (hiPSCs). Our scaffolds could support the attachment, proliferation, and neuronal differentiation of hiPSC-derived neural stem cells (NSCs), and were also able to incorporate active growth factors and release them over time, which modified the behavior of cultured cells and substituted the need for growth factor supplementation by media change. Electrical stimulation on the doped SA scaffold positively influenced the maturation of neuronal populations, with neurons exhibiting more branched neurites compared to controls. Through promotion of cell proliferation, differentiation, and neurite branching of hiPSC-derived NSCs, these conductive SA fibrous scaffolds are of broad application in nerve regeneration strategies.
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Affiliation(s)
- Chia-Chen Hsu
- Department of Materials, Imperial College London, London SW7 2AZ, U.K.
- Department of Bioengineering, Imperial College London, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, London SW7 2AZ, U.K.
| | - Andrea Serio
- Department of Materials, Imperial College London, London SW7 2AZ, U.K.
- Department of Bioengineering, Imperial College London, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, London SW7 2AZ, U.K.
| | - Nadav Amdursky
- Department of Materials, Imperial College London, London SW7 2AZ, U.K.
- Department of Bioengineering, Imperial College London, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, London SW7 2AZ, U.K.
| | - Cyril Besnard
- Department of Materials, Imperial College London, London SW7 2AZ, U.K.
| | - Molly M. Stevens
- Department of Materials, Imperial College London, London SW7 2AZ, U.K.
- Department of Bioengineering, Imperial College London, London SW7 2AZ, U.K.
- Institute
of Biomedical Engineering, Imperial College
London, London SW7 2AZ, U.K.
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11
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De Ridder D, Perera S, Vanneste S. State of the Art: Novel Applications for Cortical Stimulation. Neuromodulation 2017; 20:206-214. [PMID: 28371170 DOI: 10.1111/ner.12593] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/13/2017] [Accepted: 01/30/2017] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Electrical stimulation via implanted electrodes that overlie the cortex of the brain is an upcoming neurosurgical technique that was hindered for a long time by insufficient knowledge of how the brain functions in a dynamic, physiological, and pathological way, as well as by technological limitations of the implantable stimulation devices. METHODS This paper provides an overview of cortex stimulation via implantable devices and introduces future possibilities to improve cortex stimulation. RESULTS Cortex stimulation was initially used preoperatively as a technique to localize functions in the brain and only later evolved into a treatment technique. It was first used for pain, but more recently a multitude of pathologies are being targeted by cortex stimulation. These disorders are being treated by stimulating different cortical areas of the brain. Risks and complications are essentially similar to those related to deep brain stimulation and predominantly include haemorrhage, seizures, infection, and hardware failures. For cortex stimulation to fully mature, further technological development is required to predict its outcomes and improve stimulation designs. This includes the development of network science-based functional connectivity approaches, genetic analyses, development of navigated high definition transcranial alternating current stimulation, and development of pseudorandom stimulation designs for preventing habituation. CONCLUSION In conclusion, cortex stimulation is a nascent but very promising approach to treating a variety of diseases, but requires further technological development for predicting outcomes, such as network science based functional connectivity approaches, genetic analyses, development of navigated transcranial electrical stimulation, and development of pseudorandom stimulation designs for preventing habituation.
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Affiliation(s)
- Dirk De Ridder
- Department of Surgical Sciences, Dunedin School of Medicine, University of Otago, New Zealand
| | | | - Sven Vanneste
- Department of Surgical Sciences, Dunedin School of Medicine, University of Otago, New Zealand.,The University of Texas at Dallas, Richardson, TX, USA
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12
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Yang S, Jang L, Kim S, Yang J, Yang K, Cho SW, Lee JY. Polypyrrole/Alginate Hybrid Hydrogels: Electrically Conductive and Soft Biomaterials for Human Mesenchymal Stem Cell Culture and Potential Neural Tissue Engineering Applications. Macromol Biosci 2016; 16:1653-1661. [DOI: 10.1002/mabi.201600148] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 06/30/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Sumi Yang
- School of Materials Science and Engineering; Gwangju Institute of Science and Engineering (GIST); Gwangju 500-712 Republic of Korea
| | - LindyK. Jang
- School of Materials Science and Engineering; Gwangju Institute of Science and Engineering (GIST); Gwangju 500-712 Republic of Korea
| | - Semin Kim
- School of Materials Science and Engineering; Gwangju Institute of Science and Engineering (GIST); Gwangju 500-712 Republic of Korea
| | - Jongcheol Yang
- School of Materials Science and Engineering; Gwangju Institute of Science and Engineering (GIST); Gwangju 500-712 Republic of Korea
| | - Kisuk Yang
- Department of Biotechnology; Yonsei University; Seoul 120-749 Republic of Korea
| | - Seung-Woo Cho
- Department of Biotechnology; Yonsei University; Seoul 120-749 Republic of Korea
| | - Jae Young Lee
- School of Materials Science and Engineering; Gwangju Institute of Science and Engineering (GIST); Gwangju 500-712 Republic of Korea
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13
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Merging DBS with viral vector or stem cell implantation: "hybrid" stereotactic surgery as an evolution in the surgical treatment of Parkinson's disease. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2016; 3:15051. [PMID: 26817024 PMCID: PMC4714520 DOI: 10.1038/mtm.2015.51] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 10/13/2015] [Accepted: 10/14/2015] [Indexed: 12/15/2022]
Abstract
Parkinson’s disease (PD) is a complex neurodegenerative disorder that is currently managed using a broad array of symptom-based strategies. However, targeting its molecular origins represents the potential to discover disease-modifying therapies. Deep brain stimulation (DBS), a highly successful treatment modality for PD symptoms, addresses errant electrophysiological signaling pathways in the basal ganglia. In contrast, ongoing clinical trials testing gene and cell replacement therapies propose to protect or restore neuronal-based physiologic dopamine transmission in the striatum. Given promising new platforms to enhance target localization—such as interventional MRI-guided stereotaxy—the opportunity now exists to create hybrid therapies that combine DBS with gene therapy and/or cell implantation. In this mini-review, we discuss approaches used for central nervous system biologic delivery in PD patients in previous trials and propose a new set of strategies based on novel molecular targets. A multifaceted approach, if successful, may not only contribute to our understanding of PD pathology but could introduce a new era of disease modification.
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