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Ferreira LVDO, Kamura BDC, de Oliveira JPM, Chimenes ND, de Carvalho M, dos Santos LA, Dias-Melicio LA, Amorim RL, Amorim RM. In Vitro Transdifferentiation Potential of Equine Mesenchymal Stem Cells into Schwann-Like Cells. Stem Cells Dev 2023; 32:422-432. [PMID: 37071193 PMCID: PMC10401561 DOI: 10.1089/scd.2022.0274] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 04/17/2023] [Indexed: 04/19/2023] Open
Abstract
Schwann cells (SCs) are essential for the regenerative processes of peripheral nerve injuries. However, their use in cell therapy is limited. In this context, several studies have demonstrated the ability of mesenchymal stem cells (MSCs) to transdifferentiate into Schwann-like cells (SLCs) using chemical protocols or co-culture with SCs. Here, we describe for the first time the in vitro transdifferentiation potential of MSCs derived from equine adipose tissue (AT) and equine bone marrow (BM) into SLCs using a practical method. In this study, the facial nerve of a horse was collected, cut into fragments, and incubated in cell culture medium for 48 h. This medium was used to transdifferentiate the MSCs into SLCs. Equine AT-MSCs and BM-MSCs were incubated with the induction medium for 5 days. After this period, the morphology, cell viability, metabolic activity, gene expression of glial markers glial fibrillary acidic protein (GFAP), myelin basic protein (MBP), p75 and S100β, nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and glial cell-derived neurotrophic factor (GDNF), and the protein expression of S100 and GFAP were evaluated in undifferentiated and differentiated cells. The MSCs from the two sources incubated with the induction medium exhibited similar morphology to the SCs and maintained cell viability and metabolic activity. There was a significant increase in the gene expression of BDNF, GDNF, GFAP, MBP, p75, and S100β in equine AT-MSCs and GDNF, GFAP, MBP, p75, and S100β in equine BM-MSCs post-differentiation. Immunofluorescence analysis revealed GFAP expression in undifferentiated and differentiated cells, with a significant increase in the integrated pixel density in differentiated cells and S100 was only expressed in differentiated cells from both sources. These findings indicate that equine AT-MSCs and BM-MSCs have great transdifferentiation potential into SLCs using this method, and they represent a promising strategy for cell-based therapy for peripheral nerve regeneration in horses.
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Affiliation(s)
- Lucas Vinícius de Oliveira Ferreira
- Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
- Translational Nucleus of Regenerative Medicine (NUTRAMERE), School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Beatriz da Costa Kamura
- Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
- Translational Nucleus of Regenerative Medicine (NUTRAMERE), School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - João Pedro Marmol de Oliveira
- Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
- Translational Nucleus of Regenerative Medicine (NUTRAMERE), School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Natielly Dias Chimenes
- Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
- Translational Nucleus of Regenerative Medicine (NUTRAMERE), School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Márcio de Carvalho
- Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Leandro Alves dos Santos
- Confocal Microscopy Laboratory, UNIPEX–Experimental Research Unit, Medical School of Botucatu; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Luciane Alarcão Dias-Melicio
- Confocal Microscopy Laboratory, UNIPEX–Experimental Research Unit, Medical School of Botucatu; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
- Department of Pathology, Medical School of Botucatu; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Renée Laufer Amorim
- Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Rogério Martins Amorim
- Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
- Translational Nucleus of Regenerative Medicine (NUTRAMERE), School of Veterinary Medicine and Animal Science; São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
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Reifenrath J, Heider M, Kempfert M, Harting H, Weidemann F, Strauss S, Angrisani N. Buprenorphine in rats: potent analgesic or trigger for fatal side effects? Acta Vet Scand 2022; 64:37. [PMID: 36514178 PMCID: PMC9749369 DOI: 10.1186/s13028-022-00661-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022] Open
Abstract
With ongoing animal welfare efforts, multimodal analgesia is often recommended to implement in study protocols. Buprenorphine with very potent analgesic effect is a standard opioid for the use in this context in rats. In this study, two rat strains (LEW/NHanZtm, n = 6 and Crl:CD(SD), n = 8) underwent orthopaedic surgery and received carprofen, buprenorphine and a local anaesthetic in a multimodal setup. Crl:CD(SD) rats showed severe side effects in the first 24 h after anaesthesia, predominantly manifesting in pica-behaviour and reaching humane endpoints in two of eight animals, while LEW/NHanZtm rats showed only slight depression in the first postoperative days. In the context of improving animal welfare in experimental studies, buprenorphine is highly recommended not to be used in male Crl:CD(SD) rats and should generally be used very carefully and only if required.
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Affiliation(s)
- Janin Reifenrath
- Hannover Medical School, Clinic for Orthopaedic Surgery, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Miriam Heider
- Hannover Medical School, Institute for Laboratory Animal Science and Central Animal Facility, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Merle Kempfert
- Hannover Medical School, Clinic for Orthopaedic Surgery, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
- Present Address: Deutsches Krebsforschungszentrum Stiftung des öffentlichen Rechts, Zentrum für Präklinische Forschung, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Heidi Harting
- Hannover Medical School, Clinic for Orthopaedic Surgery, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Friederike Weidemann
- Hannover Medical School, Trauma Department, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Sarah Strauss
- Hannover Medical School, Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Nina Angrisani
- Hannover Medical School, Clinic for Orthopaedic Surgery, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
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Velichanskaya AG, Abrosimov DA, Bugrova ML, Kazakov AV, Pogadaeva EV, Radaev AM, Blagova NV, Vasyagina TI, Ermolin IL. Reconstruction of the Rat Sciatic Nerve by Using Biodegradable and Non-Biodegradable Conduits. Sovrem Tekhnologii Med 2021; 12:48-54. [PMID: 34796004 PMCID: PMC8596261 DOI: 10.17691/stm2020.12.5.05] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Indexed: 01/15/2023] Open
Abstract
The aim of the study was to compare two types of conduits made of either non-resorbable Reperen or resorbable Tissucol for their effects on the regeneration of the rat sciatic nerve under conditions of stump diastasis.
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Affiliation(s)
- A G Velichanskaya
- Associate Professor, Department of Histology, Cytology, and Embryology; Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - D A Abrosimov
- Senior Lecturer, Department of Histology, Cytology, and Embryology; Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - M L Bugrova
- Associate Professor, Head of the Department of Electron Microscopy, Central Research Laboratory; Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - A V Kazakov
- Researcher, Research Laboratory, Clinic of Cardiology, Angiology, and Intensive Care; Saarland University, Saarbrücken Campus, Saarbrücken, 66123, Germany
| | - E V Pogadaeva
- Senior Laboratory Assistant, Department of Histology, Cytology, and Embryology; Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - A M Radaev
- Associate Professor, Department of Histology, Cytology, and Embryology; Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - N V Blagova
- Senior Lecturer, Department of Histology Cytology, and Embryology; Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - T I Vasyagina
- Senior Researcher, Department of Electron Microscopy, Central Research Laboratory; Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - I L Ermolin
- Professor, Head of the Department of Histology, Cytology, and Embryology Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
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Peripheral Nerve Regeneration Using Different Germ Layer-Derived Adult Stem Cells in the Past Decade. Behav Neurol 2021; 2021:5586523. [PMID: 34539934 PMCID: PMC8448597 DOI: 10.1155/2021/5586523] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/27/2021] [Accepted: 08/09/2021] [Indexed: 12/15/2022] Open
Abstract
Peripheral nerve injuries (PNIs) are some of the most common types of traumatic lesions affecting the nervous system. Although the peripheral nervous system has a higher regenerative ability than the central nervous system, delayed treatment is associated with disturbances in both distal sensory and functional abilities. Over the past decades, adult stem cell-based therapies for peripheral nerve injuries have drawn attention from researchers. This is because various stem cells can promote regeneration after peripheral nerve injuries by differentiating into neural-line cells, secreting various neurotrophic factors, and regulating the activity of in situ Schwann cells (SCs). This article reviewed research from the past 10 years on the role of stem cells in the repair of PNIs. We concluded that adult stem cell-based therapies promote the regeneration of PNI in various ways.
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Dehdashtian A, Bratley JV, Svientek SR, Kung TA, Awan TM, Cederna PS, Kemp SW. Autologous fat grafting for nerve regeneration and neuropathic pain: current state from bench-to-bedside. Regen Med 2020; 15:2209-2228. [PMID: 33264053 DOI: 10.2217/rme-2020-0103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Despite recent advances in microsurgical techniques, functional recovery following peripheral nerve injury remains slow and inadequate. Poor peripheral nerve regeneration not only leaves patients with significant impairments, but also commonly leads to the development of debilitating neuropathic pain. Recent research has demonstrated the potential therapeutic benefits of adipose-derived stem cells, to enhance nerve regeneration. However, clinical translation remains limited due to the current regulatory burdens of the US FDA. A reliable and immediately translatable alternative is autologous fat grafting, where native adipose-derived stem cells present in the transferred tissue can potentially act upon regenerating axons. This review presents the scope of adipose tissue-based therapies to enhance outcomes following peripheral nerve injury, specifically focusing on their role in regeneration and ameliorating neuropathic pain.
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Affiliation(s)
- Amir Dehdashtian
- Department of Surgery, Section of Plastic & Reconstructive Surgery, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jarred V Bratley
- Department of Surgery, Section of Plastic & Reconstructive Surgery, University of Michigan, Ann Arbor, MI 48109, USA
| | - Shelby R Svientek
- Department of Surgery, Section of Plastic & Reconstructive Surgery, University of Michigan, Ann Arbor, MI 48109, USA
| | - Theodore A Kung
- Department of Surgery, Section of Plastic & Reconstructive Surgery, University of Michigan, Ann Arbor, MI 48109, USA
| | - Tariq M Awan
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI 48109, USA
| | - Paul S Cederna
- Department of Surgery, Section of Plastic & Reconstructive Surgery, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Stephen Wp Kemp
- Department of Surgery, Section of Plastic & Reconstructive Surgery, University of Michigan, Ann Arbor, MI 48109, USA.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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Heinzel J, Längle G, Oberhauser V, Hausner T, Kolbenschlag J, Prahm C, Grillari J, Hercher D. Use of the CatWalk gait analysis system to assess functional recovery in rodent models of peripheral nerve injury – a systematic review. J Neurosci Methods 2020; 345:108889. [DOI: 10.1016/j.jneumeth.2020.108889] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 02/07/2023]
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The Role of Fat Grafting in Alleviating Neuropathic Pain: A Critical Review of the Literature. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2019; 7:e2216. [PMID: 31333948 PMCID: PMC6571323 DOI: 10.1097/gox.0000000000002216] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 02/19/2019] [Indexed: 01/15/2023]
Abstract
Background Neuropathic pain is one of the more severe types of chronic pain and presents a great challenge as response to medical therapy remains often unpredictable. With the opioid epidemic and the search for ways to avoid narcotics, physicians are seeking other modalities to treat neuropathic pain. In recent years, surgeons have explored various surgical avenues to improve outcomes. The aim of this review was to evaluate the current clinical evidence regarding the efficacy of fat grafting for the treatment of neuropathic pain. Methods A critical review was conducted to examine the current clinical evidence of fat grafting as a therapy for neuropathic pain caused by neuromas, peripheral neuralgia, migraine and headaches, neuropathic scar pain, and postmastectomy pain syndrome. Results The precise mechanism role of fat grafting in modulating neuropathic pain remains unclear, but it appears to reduce pain levels through the anti-inflammatory effects of adipose-derived stem cells and mechanical cushioning by fat. Conclusions Fat grafting is an emerging therapy for chronic neuropathic pain of various etiologies. Although promising results have been reported, sample size and level of evidence of current studies are low. The encouraging results, however, are worthy of further clinical and scientific study. The minimally invasive nature of fat grafting and favorable risk profile make this an attractive therapy for neuropathic pain.
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Sayad-Fathi S, Nasiri E, Zaminy A. Advances in stem cell treatment for sciatic nerve injury. Expert Opin Biol Ther 2019; 19:301-311. [PMID: 30700166 DOI: 10.1080/14712598.2019.1576630] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION The sciatic nerve is one of the peripheral nerves that is most prone to injuries. After injury, the connection between the nervous system and the distal organs is disrupted, and delayed treatment results in distal organ atrophy and total disability. Regardless of great advances in the fields of neurosurgery, biological sciences, and regenerative medicine, total functional recovery is yet to be achieved. AREAS COVERED Cell-based therapy for the treatment of peripheral nerve injuries (PNIs) has brought a new perspective to the field of regenerative medicine. Having the ability to differentiate into neural and glial cells, stem cells enhance neural regeneration after PNIs. Augmenting axonal regeneration, remyelination, and muscle mass preservation are the main mechanisms underlying stem cells' beneficial effects on neural regeneration. EXPERT OPINION Despite the usefulness of employing stem cells for the treatment of PNIs in pre-clinical settings, further assessments are still needed in order to translate this approach into clinical settings. Mesenchymal stem cells, especially adipose-derived stem cells, with the ability of autologous transplantation, as well as easy harvesting procedures, are speculated to be the most promising source to be used in the treatment of PNIs.
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Affiliation(s)
- Sara Sayad-Fathi
- a Neuroscience Research Center, Faculty of Medicine , Guilan University of Medical Sciences , Rasht , Iran
| | - Ebrahim Nasiri
- a Neuroscience Research Center, Faculty of Medicine , Guilan University of Medical Sciences , Rasht , Iran
| | - Arash Zaminy
- a Neuroscience Research Center, Faculty of Medicine , Guilan University of Medical Sciences , Rasht , Iran
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Liu YD, Wang ZB, Han G, Jin L, Zhao P. Hyperbaric oxygen relieves neuropathic pain through AKT/TSC2/mTOR pathway activity to induce autophagy. J Pain Res 2019; 12:443-451. [PMID: 30774414 PMCID: PMC6361320 DOI: 10.2147/jpr.s189353] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Background Our previous study suggested that HBO treatment attenuated neuropathic pain by inhibiting mTOR to induce autophagy in SNL neuropathic pain model. The aim of this study was to evaluate the role of AKT/TSC2/mTOR pathway in SNL and autophagy and determine whether HBO treatment could relieve neuropathic pain via modulating AKT/TSC2/mTOR pathway. Materials and methods Rats were randomly divided into sham, SNL, SNL + HBO treatment, SNL + vehicle, and SNL + AKT inhibitor groups. Neuropathic pain was induced following SNL procedure. Rats in the SNL + HBO group received HBO treatment for 7 consecutive days beginning on postoperative day 1. The SNL + vehicle group received 10 µL of 3% dimethyl sulfoxide in saline. SNL + AKT inhibitor group received 10 µL AKT inhibitor IV intrathecally. Mechanical withdrawal threshold tests were performed to evaluate mechanical hypersensitivity. AKT, p-AKT, TSC2, mTOR, p-mTOR, and LC3-II protein expressions were examined by Western blot analysis. Results HBO reversed AKT/TSC2/mTOR upregulation induced by SNL and attenuated neuropathic pain. Intrathecal injection of AKT inhibitor IV decreased the activity of AKT/TSC2/mTOR pathway and increased LC3-II expression accompanied by analgesic effect in SNL rats. Conclusion Taken together, our findings demonstrated AKT/TSC2/mTOR pathway was activated in SNL-induced neuropathic pain, and HBO treatment attenuated neuropathic pain via neutralizing AKT/TSC2/mTOR pathway activation.
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Affiliation(s)
- Yong-Da Liu
- Department of Anesthesiology and Pain Management, Shengjing Hospital of China Medical University, Shenyang 110004, China,
| | - Zhi-Bin Wang
- Department of Anesthesiology and Pain Management, Shengjing Hospital of China Medical University, Shenyang 110004, China,
| | - Guang Han
- Department of Anesthesiology and Pain Management, Shengjing Hospital of China Medical University, Shenyang 110004, China,
| | - Li Jin
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA 22908, USA
| | - Ping Zhao
- Department of Anesthesiology and Pain Management, Shengjing Hospital of China Medical University, Shenyang 110004, China,
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Ramli K, Aminath Gasim I, Ahmad AA, Hassan S, Law ZK, Tan GC, Baharuddin A, Naicker AS, Htwe O, Mohammed Haflah NH, B H Idrus R, Abdullah S, Ng MH. Human bone marrow-derived MSCs spontaneously express specific Schwann cell markers. Cell Biol Int 2019; 43:233-252. [PMID: 30362196 DOI: 10.1002/cbin.11067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 10/07/2018] [Indexed: 12/15/2022]
Abstract
In peripheral nerve injuries, Schwann cells (SC) play pivotal roles in regenerating damaged nerve. However, the use of SC in clinical cell-based therapy is hampered due to its limited availability. In this study, we aim to evaluate the effectiveness of using an established induction protocol for human bone marrow derived-MSC (hBM-MSCs) transdifferentiation into a SC lineage. A relatively homogenous culture of hBM-MSCs was first established after serial passaging (P3), with profiles conforming to the minimal criteria set by International Society for Cellular Therapy (ISCT). The cultures (n = 3) were then subjected to a series of induction media containing β-mercaptoethanol, retinoic acid, and growth factors. Quantitative RT-PCR, flow cytometry, and immunocytochemistry analyses were performed to quantify the expression of specific SC markers, that is, S100, GFAP, MPZ and p75 NGFR, in both undifferentiated and transdifferentiated hBM-MSCs. Based on these analyses, all markers were expressed in undifferentiated hBM-MSCs and MPZ expression (mRNA transcripts) was consistently detected before and after transdifferentiation across all samples. There was upregulation at the transcript level of more than twofolds for NGF, MPB, GDNF, p75 NGFR post-transdifferentiation. This study highlights the existence of spontaneous expression of specific SC markers in cultured hBM-MSCs, inter-donor variability and that MSC transdifferentiation is a heterogenous process. These findings strongly oppose the use of a single marker to indicate SC fate. The heterogenous nature of MSC may influence the efficiency of SC transdifferentiation protocols. Therefore, there is an urgent need to re-define the MSC subpopulations and revise the minimal criteria for MSC identification.
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Affiliation(s)
- Khairunnisa Ramli
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Ifasha Aminath Gasim
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Amir Adham Ahmad
- Department of Orthopaedics, School of Medicine, International Medical University, Negeri Sembilan, Malaysia
| | - Shariful Hassan
- Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Zhe Kang Law
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Geok Chin Tan
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Azmi Baharuddin
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Amaramalar Selvi Naicker
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Ohnmar Htwe
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Nor Hazla Mohammed Haflah
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Ruszymah B H Idrus
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Shalimar Abdullah
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Min Hwei Ng
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
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Tognon-Miguel V, Nascimento-Elias AH, Schiavoni MCL, Barreira AA. Plasticity of Unmyelinated Fibers in a Side-to-end Tubulization Model. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2019; 7:e1993. [PMID: 30859022 PMCID: PMC6382236 DOI: 10.1097/gox.0000000000001993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 09/14/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Histomorphometric studies of unmyelinated fibers of the rat fibular nerves are uncommon, and side-to-end neurorrhaphy studies using the fibular nerve investigate primarily motor fibers. We investigated side-to-end tubulization (SET) technique, in which occurs collateral sprouting from the intact donor nerve fibers to the distal stump of receptor nerve, with muscle reinnervation and functional rehabilitation, to assess whether there is a successful growth of unmyelinated fibers in this model. METHODS Adult Wistar rats fibular nerves were sectioned to create a 5-mm gap. A 6-mm silicone tube was attached between a side of the intact tibial nerve and the sectioned fibular nerve distal stump (SET group), with the left fibular nerve as normal (sham group). Seventy days postsurgery, unmyelinated fibers from the distal segment of the fibular nerve were quantified using light and transmission electron microscopy and their diameters were measured. RESULTS The number of unmyelinated fibers was similar between sham (1,882 ± 270.9) and SET (2,012 ± 1,060.8), but axons density was significantly greater in the SET (18,733.3 ± 5,668.6) than sham (13,935.0 ± 1,875.8). Additionally, the axonal diameters differed significantly between groups with mean measures in sham (0.968 ± 0.10) > SET (0.648 ± 0.08). CONCLUSIONS Unmyelinated fiber growth occurred even with a 5-mm distance between the donor and receptor nerves, reaching similar axonal number to the normal nerve, demonstrating that the SET is a reliable technique that can promote a remarkable plasticity of unmyelinated axons.
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Affiliation(s)
- Vânia Tognon-Miguel
- Department of Neurosciences and Behavioral Sciences, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Adriana H Nascimento-Elias
- Department of Neurosciences and Behavioral Sciences, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Department of Biomechanics, Medicine and Rehabilitation of the Locomotor System, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Maria C L Schiavoni
- Department of Neurosciences and Behavioral Sciences, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Amilton A Barreira
- Department of Neurosciences and Behavioral Sciences, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Allbright KO, Bliley JM, Havis E, Kim D, Dibernardo GA, Grybowski D, Waldner M, James IB, Sivak WN, Rubin JP, Marra KG. Delivery of adipose‐derived stem cells in poloxamer hydrogel improves peripheral nerve regeneration. Muscle Nerve 2018; 58:251-260. [DOI: 10.1002/mus.26094] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Kassandra O. Allbright
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - Jacqueline M. Bliley
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - Emmanuelle Havis
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - Deok‐Yeol Kim
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - Gabriella A. Dibernardo
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - Damian Grybowski
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - Matthias Waldner
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - Isaac B. James
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - Wesley N. Sivak
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - J. Peter Rubin
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
| | - Kacey G. Marra
- Department of Plastic Surgery, School of MedicineUniversity of Pittsburgh3550 Terrace Street 6B, Scaife Hall Pittsburgh Pennsylvania15261 USA
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Schiraldi L, Sottaz L, Madduri S, Campisi C, Oranges CM, Raffoul W, Kalbermatten DF, di Summa PG. Split-sciatic nerve surgery: A new microsurgical model in experimental nerve repair. J Plast Reconstr Aesthet Surg 2017; 71:557-565. [PMID: 29229422 DOI: 10.1016/j.bjps.2017.11.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 10/01/2017] [Accepted: 11/07/2017] [Indexed: 01/26/2023]
Abstract
INTRODUCTION Sciatic experimental surgery in rat often leads to hindlimb autophagy, with considerable ethical and research issues. In this work, the distal part of the sciatic nerve was split following the natural bifurcation between tibial and peroneal branches, before applying regenerative stem cells in a fibrin conduit on the peroneal segment. The new microsurgical model was tested in terms of animal morbidity and consistency of research outcomes, particularly comparing to the standard total sciatic axotomy procedure. MATERIALS AND METHODS After dissection of sciatic the nerve, the tibial and peroneal fibres were split upwards and a total axotomy was performed in the peroneal side. The 1 cm nerve gap between the proximal sciatic nerve and peroneal nerve was crossed using fibrin conduits. The tibial nerve was not included. Experimental groups involved either empty or fibrin conduit seeded with Schwann cell-like differentiated adipose derived stem cells (dASC) (Fib + dASC). Autografts and sham rats were used as controls (total n = 20). At 12 weeks post-implantation, an extensive histomorphometric analysis was performed. Functional aspects of regeneration were analysed by walking track analysis. RESULTS No major autophagy occurred using the split-sciatic technique. A detailed histomorphometric analysis showed consistent results with previous literature using fibrin conduits in a full sciatic axotomy experimental setting. Walking track analysis reflected the histological regeneration pattern, displaying superior regeneration in both autograft and dASC groups. CONCLUSION Split-Sciatic nerve surgery reduced animal morbidity, while being representative of the whole nerve as regeneration outcomes were consistent with previous data obtained on the whole sciatic nerve. The decreased autophagy rate allowed for a more efficient functional evaluation.
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Affiliation(s)
- Luigi Schiraldi
- Centre Hospitalier Universitaire Vaudois, Department of Plastic, Reconstructive and Hand Surgery, Lausanne, Vaud, Switzerland
| | - Lima Sottaz
- University Hospital Basel, Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, Basel, Switzerland
| | - Srinivas Madduri
- Universitatsspital Basel, Center for Bioengineering and Regenerative Medicine (CBRM), Basel, Switzerland
| | - Corrado Campisi
- "San Martino" Hospital - University of Genoa, Department of Surgery, L.go Rosanna Benzi 8, 16132 Genoa, Italy
| | - Carlo M Oranges
- University Hospital Basel, Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, Basel, Switzerland
| | - Wassim Raffoul
- Centre Hospitalier Universitaire Vaudois, Department of Plastic, Reconstructive and Hand Surgery, Lausanne, Vaud, Switzerland
| | - Daniel F Kalbermatten
- University Hospital Basel, Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, Basel, Switzerland
| | - Pietro G di Summa
- Centre Hospitalier Universitaire Vaudois, Department of Plastic, Reconstructive and Hand Surgery, Lausanne, Vaud, Switzerland.
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