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Quesnel MJ, Labonté A, Picard C, Zetterberg H, Blennow K, Brinkmalm A, Villeneuve S, Poirier J. Insulin-like growth factor binding protein-2 in at-risk adults and autopsy-confirmed Alzheimer brains. Brain 2024; 147:1680-1695. [PMID: 37992295 PMCID: PMC11068109 DOI: 10.1093/brain/awad398] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/20/2023] [Accepted: 11/12/2023] [Indexed: 11/24/2023] Open
Abstract
Insulin, insulin-like growth factors (IGF) and their receptors are highly expressed in the adult hippocampus. Thus, disturbances in the insulin-IGF signalling pathway may account for the selective vulnerability of the hippocampus to nascent Alzheimer's disease (AD) pathology. In the present study, we examined the predominant IGF-binding protein in the CSF, IGFBP2. CSF was collected from 109 asymptomatic members of the parental history-positive PREVENT-AD cohort. CSF levels of IGFBP2, core AD and synaptic biomarkers were measured using proximity extension assay, ELISA and mass spectrometry. Cortical amyloid-beta (Aβ) and tau deposition were examined using 18F-NAV4694 and flortaucipir. Cognitive assessments were performed during up to 8 years of follow-up, using the Repeatable Battery for the Assessment of Neuropsychological Status. T1-weighted structural MRI scans were acquired, and neuroimaging analyses were performed on pre-specified temporal and parietal brain regions. Next, in an independent cohort, we allocated 241 dementia-free ADNI-1 participants into four stages of AD progression based on the biomarkers CSF Aβ42 and total-tau (t-tau). In this analysis, differences in CSF and plasma IGFBP2 levels were examined across the pathological stages. Finally, IGFBP2 mRNA and protein levels were examined in the frontal cortex of 55 autopsy-confirmed AD and 31 control brains from the Quebec Founder Population (QFP) cohort, a unique population isolated from Eastern Canada. CSF IGFBP2 progressively increased over 5 years in asymptomatic PREVENT-AD participants. Baseline CSF IGFBP2 was positively correlated with CSF AD biomarkers and synaptic biomarkers, and negatively correlated with longitudinal changes in delayed memory (P = 0.024) and visuospatial abilities (P = 0.019). CSF IGFBP2 was negatively correlated at a trend-level with entorhinal cortex volume (P = 0.082) and cortical thickness in the piriform (P = 0.039), inferior temporal (P = 0.008), middle temporal (P = 0.014) and precuneus (P = 0.033) regions. In ADNI-1, CSF (P = 0.009) and plasma (P = 0.001) IGFBP2 were significantly elevated in Stage 2 [CSF Aβ(+)/t-tau(+)]. In survival analyses in ADNI-1, elevated plasma IGFBP2 was associated with a greater rate of AD conversion (hazard ratio = 1.62, P = 0.021). In the QFP cohort, IGFBP2 mRNA was reduced (P = 0.049); however, IGFBP2 protein levels did not differ in the frontal cortex of autopsy-confirmed AD brains (P = 0.462). Nascent AD pathology may induce an upregulation in IGFBP2 in asymptomatic individuals. CSF and plasma IGFBP2 may be valuable markers for identifying CSF Aβ(+)/t-tau(+) individuals and those with a greater risk of AD conversion.
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Affiliation(s)
- Marc James Quesnel
- McGill University, Montréal, QC H3A 1A1, Canada
- Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
| | - Anne Labonté
- Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
- Centre for the Studies in the Prevention of Alzheimer’s Disease, Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
| | - Cynthia Picard
- Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
- Centre for the Studies in the Prevention of Alzheimer’s Disease, Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg 413 45, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal 431 80, Sweden
- Department of Neurodegenerative Disease, UCL Institute of Neurology, London WC1N 3BG, UK
- UK Dementia Research Institute at UCL, London WC1E 6BT, UK
- Hong Kong Center for Neurodegenerative Diseases, Hong Kong, China
- Wisconsin Alzheimer’s Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53792-2420, USA
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg 413 45, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal 431 80, Sweden
- Paris Brain Institute, ICM, Pitié-Salpêtrière Hospital, Sorbonne University, 75646 Cedex 13, Paris, France
- Neurodegenerative Disorder Research Center, Division of Life Sciences and Medicine, and Department of Neurology, Institute on Aging and Brain Disorders, University of Science and Technology of China and First Affiliated Hospital of USTC, Hefei 230026, P.R. China
| | - Ann Brinkmalm
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg 413 45, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal 431 80, Sweden
| | - Sylvia Villeneuve
- McGill University, Montréal, QC H3A 1A1, Canada
- Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
- Centre for the Studies in the Prevention of Alzheimer’s Disease, Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
| | - Judes Poirier
- McGill University, Montréal, QC H3A 1A1, Canada
- Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
- Centre for the Studies in the Prevention of Alzheimer’s Disease, Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
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Gordon T. Brief Electrical Stimulation Promotes Recovery after Surgical Repair of Injured Peripheral Nerves. Int J Mol Sci 2024; 25:665. [PMID: 38203836 PMCID: PMC10779324 DOI: 10.3390/ijms25010665] [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: 10/13/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 01/12/2024] Open
Abstract
Injured peripheral nerves regenerate their axons in contrast to those in the central nervous system. Yet, functional recovery after surgical repair is often disappointing. The basis for poor recovery is progressive deterioration with time and distance of the growth capacity of the neurons that lose their contact with targets (chronic axotomy) and the growth support of the chronically denervated Schwann cells (SC) in the distal nerve stumps. Nonetheless, chronically denervated atrophic muscle retains the capacity for reinnervation. Declining electrical activity of motoneurons accompanies the progressive fall in axotomized neuronal and denervated SC expression of regeneration-associated-genes and declining regenerative success. Reduced motoneuronal activity is due to the withdrawal of synaptic contacts from the soma. Exogenous neurotrophic factors that promote nerve regeneration can replace the endogenous factors whose expression declines with time. But the profuse axonal outgrowth they provoke and the difficulties in their delivery hinder their efficacy. Brief (1 h) low-frequency (20 Hz) electrical stimulation (ES) proximal to the injury site promotes the expression of endogenous growth factors and, in turn, dramatically accelerates axon outgrowth and target reinnervation. The latter ES effect has been demonstrated in both rats and humans. A conditioning ES of intact nerve days prior to nerve injury increases axonal outgrowth and regeneration rate. Thereby, this form of ES is amenable for nerve transfer surgeries and end-to-side neurorrhaphies. However, additional surgery for applying the required electrodes may be a hurdle. ES is applicable in all surgeries with excellent outcomes.
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Affiliation(s)
- Tessa Gordon
- Division of Reconstructive Surgery, Department of Surgery, University of Toronto, Toronto, ON M4G 1X8, Canada
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Ishihara H, Otani Y, Tanaka K, Miyajima H, Ngo HX, Fujitani M. Blocking insulin-like growth factor 1 receptor signaling pathway inhibits neuromuscular junction regeneration after botulinum toxin-A treatment. Cell Death Dis 2023; 14:609. [PMID: 37717026 PMCID: PMC10505167 DOI: 10.1038/s41419-023-06128-w] [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: 09/13/2022] [Revised: 08/25/2023] [Accepted: 09/06/2023] [Indexed: 09/18/2023]
Abstract
Botulinum toxin-A (BTX) administration into muscle is an established treatment for conditions with excessive muscle contraction. However, botulinum therapy has short-term effectiveness, and high-dose injection of BTX could induce neutralizing antibodies against BTX. Therefore, prolonging its effects could be beneficial in a clinical situation. Insulin-like growth factor-1 receptor (IGF1R) and its ligands, insulin-like growth factor (IGF) -I and II, regulate the physiological and pathological processes of the nervous system. It has been suggested that IGF1R is involved in the process after BTX administration, but the specific regeneration mechanism remains unclear. Therefore, this study aimed to determine how inhibition of IGF1R signaling pathway affects BTX-induced muscle paralysis. The results showed that anti-IGF1R antibody administration inhibited the recovery from BTX-induced neurogenic paralysis, and the synaptic components at the neuromuscular junction (NMJ), mainly post-synaptic components, were significantly affected by the antibody. In addition, the wet weight or frequency distribution of the cross-sectional area of the muscle fibers was regulated by IGF1R, and sequential antibody administration following BTX treatment increased the number of Pax7+-satellite cells in the gastrocnemius (GC) muscle, independent of NMJ recovery. Moreover, BTX treatment upregulated mammalian target of rapamycin (mTOR)/S6 kinase signaling pathway, HDAC4, Myog, Fbxo32/MAFbx/Atrogin-1 pathway, and transcription of synaptic components, but not autophagy. Finally, IGF1R inhibition affected only mTOR/S6 kinase translational signaling in the GC muscle. In conclusion, the IGF1R signaling pathway is critical for NMJ regeneration via specific translational signals. IGF1R inhibition could be highly beneficial in clinical practice by decreasing the number of injections and total dose of BTX due to the prolonged duration of the effect.
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Affiliation(s)
- Hiroki Ishihara
- Department of Anatomy and Neuroscience, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo-shi, Shimane, 693-8501, Japan
- Department of Rehabilitation, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo-shi, Shimane, 693-8501, Japan
| | - Yoshinori Otani
- Department of Anatomy and Neuroscience, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo-shi, Shimane, 693-8501, Japan
| | - Kazuki Tanaka
- Department of Anatomy and Neuroscience, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo-shi, Shimane, 693-8501, Japan
- Department of Rehabilitation, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo-shi, Shimane, 693-8501, Japan
| | - Hisao Miyajima
- Department of Anatomy and Neuroscience, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo-shi, Shimane, 693-8501, Japan
| | - Huy Xuan Ngo
- Department of Anatomy and Neuroscience, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo-shi, Shimane, 693-8501, Japan
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo-shi, Shimane, 693-8501, Japan
| | - Masashi Fujitani
- Department of Anatomy and Neuroscience, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo-shi, Shimane, 693-8501, Japan.
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Bernard M, McOnie R, Tomlinson JE, Blum E, Prest TA, Sledziona M, Willand M, Gordon T, Borschel GH, Soletti L, Brown BN, Cheetham J. Peripheral Nerve Matrix Hydrogel Promotes Recovery after Nerve Transection and Repair. Plast Reconstr Surg 2023; 152:458e-467e. [PMID: 36946873 PMCID: PMC10461719 DOI: 10.1097/prs.0000000000010261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 09/08/2022] [Indexed: 03/23/2023]
Abstract
BACKGROUND Nerve transection is the most common form of peripheral nerve injury. Treatment of peripheral nerve injury has primarily focused on stabilization and mechanical cues to guide extension of the regenerating growth cone across the site of transection. The authors investigated the effects of a peripheral nerve matrix (PNM) hydrogel on recovery after nerve transection. METHODS The authors used rodent models to determine the effect of PNM on axon extension, electrophysiologic nerve conduction, force generation, and neuromuscular junction formation after nerve transection and repair. The authors complemented this work with in vivo and in vitro fluorescence-activated cell sorting and immunohistochemistry approaches to determine the effects of PNM on critical cell populations early after repair. RESULTS Extension of axons from the proximal stump and overall green fluorescent protein-positive axon volume within the regenerative bridge were increased in the presence of PNM compared with an empty conduit ( P < 0.005) 21 days after repair. PNM increased electrophysiologic conduction (compound muscle action potential amplitude) across the repair site ( P < 0.05) and neuromuscular junction formation ( P = 0.04) 56 days after repair. PNM produced a shift in macrophage phenotype in vitro and in vivo ( P < 0.05) and promoted regeneration in a murine model used to characterize the early immune response to PNM ( P < 0.05). CONCLUSION PNM, delivered by subepineural injection, promoted recovery after nerve transection with immediate repair, supporting a beneficial macrophage response, axon extension, and downstream remodeling using a range of clinically relevant outcome measures. CLINICAL RELEVANCE STATEMENT This article describes an approach for subepineural injection at the site of nerve coaptation to modulate the response to injury and improve outcomes.
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Affiliation(s)
- Megan Bernard
- From the Department of Clinical Sciences, Cornell University College of Veterinary Medicine
| | - Rebecca McOnie
- From the Department of Clinical Sciences, Cornell University College of Veterinary Medicine
| | - Joy E. Tomlinson
- From the Department of Clinical Sciences, Cornell University College of Veterinary Medicine
| | - Ethan Blum
- From the Department of Clinical Sciences, Cornell University College of Veterinary Medicine
| | | | - Mike Sledziona
- From the Department of Clinical Sciences, Cornell University College of Veterinary Medicine
| | | | - Tessa Gordon
- The Hospital for Sick Children, University of Toronto
| | | | | | | | - Jonathan Cheetham
- From the Department of Clinical Sciences, Cornell University College of Veterinary Medicine
- Renerva, LLC
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5
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Jin S, Cheng J. Insulin-like Growth Factor-1 (IGF-1) Related Drugs in Pain Management. Pharmaceuticals (Basel) 2023; 16:ph16050760. [PMID: 37242543 DOI: 10.3390/ph16050760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 05/05/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
Objective. The aim of this review is to explore the role of IGF-1 and IGF-1R inhibitors in pain-related conditions and assess the effectiveness of IGF-1-related drugs in pain management. Specifically, this paper investigates the potential involvement of IGF-1 in nociception, nerve regeneration, and the development of neuropathic pain. Methods. We conducted a search of the PUBMED/MEDLINE database, Scopus, and the Cochrane Library for all reports published in English on IGF-1 in pain management from origination through November 2022. The resulting 545 articles were screened, and 18 articles were found to be relevant after reading abstracts. After further examination of the full text of these articles, ten were included in the analysis and discussion. The levels of clinical evidence and implications for recommendations of all the included human studies were graded. Results. The search yielded 545 articles, of which 316 articles were deemed irrelevant by reading the titles. There were 18 articles deemed relevant after reading abstracts, of which 8 of the reports were excluded due to lack of IGF-1-related drug treatment after reviewing the full text of the articles. All ten articles were retrieved for analysis and discussion. We found that IGF-1 may have several positive effects on pain management, including promoting the resolution of hyperalgesia, preventing chemotherapy-induced neuropathy, reversing neuronal hyperactivity, and elevating the nociceptive threshold. On the other hand, IGF-1R inhibitors may alleviate pain in mice with injury of the sciatic nerve, bone cancer pain, and endometriosis-induced hyperalgesia. While one study showed marked improvement in thyroid-associated ophthalmopathy in humans treated with IGF-1R inhibitor, two other studies did not find any benefits from IGF-1 treatment. Conclusions. This review highlights the potential of IGF-1 and IGF-1R inhibitors in pain management, but further research is needed to fully understand their efficacy and potential side effects.
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Affiliation(s)
- Seokhyun Jin
- Department of Pain Management, Neurological Institute, Cleveland Clinic, Cleveland, OH 44106, USA
| | - Jianguo Cheng
- Department of Pain Management, Neurological Institute, Cleveland Clinic, Cleveland, OH 44106, USA
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44106, USA
- Departments of Pain Management and Neurosciences, Cleveland Clinic, 9500 Euclid Avenue/C25, Cleveland, OH 44195, USA
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Golshadi M, Claffey EF, Grenier JK, Miller A, Willand M, Edwards MG, Moore TP, Sledziona M, Gordon T, Borschel GH, Cheetham J. Delay modulates the immune response to nerve repair. NPJ Regen Med 2023; 8:12. [PMID: 36849720 PMCID: PMC9970988 DOI: 10.1038/s41536-023-00285-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 02/10/2023] [Indexed: 03/01/2023] Open
Abstract
Effective regeneration after peripheral nerve injury requires macrophage recruitment. We investigated the activation of remodeling pathways within the macrophage population when repair is delayed and identified alteration of key upstream regulators of the inflammatory response. We then targeted one of these regulators, using exogenous IL10 to manipulate the response to injury at the repair site. We demonstrate that this approach alters macrophage polarization, promotes macrophage recruitment, axon extension, neuromuscular junction formation, and increases the number of regenerating motor units reaching their target. We also demonstrate that this approach can rescue the effects of delayed nerve graft.
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Affiliation(s)
- Masoud Golshadi
- Cornell University College of Veterinary Medicine, 930 Campus Road, Ithaca, NY, 14853, USA
| | - Elaine F Claffey
- Cornell University College of Veterinary Medicine, 930 Campus Road, Ithaca, NY, 14853, USA
| | - Jennifer K Grenier
- Cornell University College of Veterinary Medicine, 930 Campus Road, Ithaca, NY, 14853, USA
| | - Andrew Miller
- Cornell University College of Veterinary Medicine, 930 Campus Road, Ithaca, NY, 14853, USA
| | - Michael Willand
- Epineuron Technologies Inc, 5100 Orbitor Dr., Mississauga, ON, L4W 5R8, Canada
| | | | - Tim P Moore
- Cornell University College of Veterinary Medicine, 930 Campus Road, Ithaca, NY, 14853, USA
| | - Michael Sledziona
- Cornell University College of Veterinary Medicine, 930 Campus Road, Ithaca, NY, 14853, USA
| | - Tessa Gordon
- Hospital for Sick Children, 555 University Ave, Toronto, ON, M5G 1×8, Canada
| | | | - Jonathan Cheetham
- Cornell University College of Veterinary Medicine, 930 Campus Road, Ithaca, NY, 14853, USA.
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7
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Mobarakeh ZT, Hasanzadeh E, Farzin A, Goodarzi A, Farahani MS, Shirian S, Mahmoodi N, Zamani N, Karimi A, Ai J. Enhanced sciatic nerve regeneration with fibrin scaffold containing human endometrial stem cells and insulin encapsulated chitosan particles: An in vivo study. Injury 2023:S0020-1383(23)00082-7. [PMID: 36894467 DOI: 10.1016/j.injury.2023.01.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 08/05/2022] [Accepted: 01/23/2023] [Indexed: 03/11/2023]
Abstract
BACKGROUND Based on recent advances in tissue engineering and stem cell therapy in nervous system diseases treatments, this study aimed to investigate sciatic nerve regeneration using human endometrial stem cells (hEnSCs) encapsulated fibrin gel containing chitosan nanoparticle loaded by insulin (Ins-CPs). Stem cells and also Insulin (Ins), which is a strong signaling molecule in peripheral nerve regeneration, play an important role in neural tissue engineering. METHODS The fibrin hydrogel scaffold containing insulin loaded chitosan particles was synthesized and characterized. Release profiles of insulin from hydrogel was determined through UV-visible spectroscopy. Also, human endometrial stem cells encapsulated in hydrogel and its cell biocompatibility were assigned. Furthermore, the sciatic nerve crush injury was carried out and prepared fibrin gel was injected at the crush injury site by an 18-gage needle. Eight and twelve weeks later, the recovery of motor and sensory function and histopathological evaluation were assessed. RESULTS The in vitro experiments showed that the insulin can promote hEnSCs proliferation within a certain concentration range. Animals' treatment confirmed that developed fibrin gel containing Ins-CPs and hEnSCs significantly improves motor function and sensory recovery. Hematoxylin and Eosin (H&E) images provided from cross-sectional and, longitudinal-sections of the harvested regenerative nerve showed that regenerative nerve fibers had been formed and accompanied with new blood vessels in the fibrin/insulin/hEnSCs group. CONCLUSION Our results demonstrated that the prepared hydrogel scaffolds containing insulin nanoparticles and hEnSCs could be considered as a potential biomaterial aimed at regeneration of sciatic nerves.
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Affiliation(s)
- Zahra Taherian Mobarakeh
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Hasanzadeh
- Immunogenetics Research Center, Department of Tissue Engineering & Regenerative Medicine, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ali Farzin
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Arash Goodarzi
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Fasa University of Medical Sciences, Fasa, Iran
| | - Morteza Sagharjoghi Farahani
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sadegh Shirian
- Department of Pathology, School of Veterinary Medicine, Sharekord University, Shahrekord, Iran
| | - Narges Mahmoodi
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Narges Zamani
- Department of Obstetrics and Gynecology, Emam Complex Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Anita Karimi
- Chronic Respiratory Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Jafar Ai
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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Hanwright PJ, Qiu C, Rath J, Zhou Y, von Guionneau N, Sarhane KA, Harris TGW, Howard GP, Malapati H, Lan MJ, Reddy S, Hoke A, Mao HQ, Tuffaha SH. Sustained IGF-1 delivery ameliorates effects of chronic denervation and improves functional recovery after peripheral nerve injury and repair. Biomaterials 2021; 280:121244. [PMID: 34794826 DOI: 10.1016/j.biomaterials.2021.121244] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 11/02/2021] [Accepted: 11/08/2021] [Indexed: 12/16/2022]
Abstract
Functional recovery following peripheral nerve injury is limited by progressive atrophy of denervated muscle and Schwann cells (SCs) that occurs during the long regenerative period prior to end-organ reinnervation. Insulin-like growth factor 1 (IGF-1) is a potent mitogen with well-described trophic and anti-apoptotic effects on neurons, myocytes, and SCs. Achieving sustained, targeted delivery of small protein therapeutics remains a challenge. We hypothesized that a novel nanoparticle (NP) delivery system can provide controlled release of bioactive IGF-1 targeted to denervated muscle and nerve tissue to achieve improved motor recovery through amelioration of denervation-induced muscle atrophy and SC senescence and enhanced axonal regeneration. Biodegradable NPs with encapsulated IGF-1/dextran sulfate polyelectrolyte complexes were formulated using a flash nanoprecipitation method to preserve IGF-1 bioactivity and maximize encapsulation efficiencies. Under optimized conditions, uniform PEG-b-PCL NPs were generated with an encapsulation efficiency of 88.4%, loading level of 14.2%, and a near-zero-order release of bioactive IGF-1 for more than 20 days in vitro. The effects of locally delivered IGF-1 NPs on denervated muscle and SCs were assessed in a rat median nerve transection-without- repair model. The effects of IGF-1 NPs on axonal regeneration, muscle atrophy, reinnervation, and recovery of motor function were assessed in a model in which chronic denervation is induced prior to nerve repair. IGF-1 NP treatment resulted in significantly greater recovery of forepaw grip strength, decreased denervation-induced muscle atrophy, decreased SC senescence, and improved neuromuscular reinnervation.
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Affiliation(s)
- Philip J Hanwright
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Chenhu Qiu
- Department of Materials Science and Engineering, Johns Hopkins University Whiting School of Engineering, Baltimore, MD, 21218, USA; Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Jennifer Rath
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Yang Zhou
- Department of Materials Science and Engineering, Johns Hopkins University Whiting School of Engineering, Baltimore, MD, 21218, USA; Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Nicholas von Guionneau
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Karim A Sarhane
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Thomas G W Harris
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Gregory P Howard
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Harsha Malapati
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Michael J Lan
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Sashank Reddy
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA; Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Ahmet Hoke
- Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, 21287, USA
| | - Hai-Quan Mao
- Department of Materials Science and Engineering, Johns Hopkins University Whiting School of Engineering, Baltimore, MD, 21218, USA; Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA; Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
| | - Sami H Tuffaha
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
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Zuccaro E, Piol D, Basso M, Pennuto M. Motor Neuron Diseases and Neuroprotective Peptides: A Closer Look to Neurons. Front Aging Neurosci 2021; 13:723871. [PMID: 34603008 PMCID: PMC8484953 DOI: 10.3389/fnagi.2021.723871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/26/2021] [Indexed: 12/02/2022] Open
Abstract
Motor neurons (MNs) are specialized neurons responsible for muscle contraction that specifically degenerate in motor neuron diseases (MNDs), such as amyotrophic lateral sclerosis (ALS), spinal and bulbar muscular atrophy (SBMA), and spinal muscular atrophy (SMA). Distinct classes of MNs degenerate at different rates in disease, with a particular class named fast-fatigable MNs (FF-MNs) degenerating first. The etiology behind the selective vulnerability of FF-MNs is still largely under investigation. Among the different strategies to target MNs, the administration of protective neuropeptides is one of the potential therapeutic interventions. Pituitary adenylate cyclase-activating polypeptide (PACAP) is a neuropeptide with beneficial effects in many neurodegenerative diseases, including Alzheimer’s disease, Parkinson’s disease, and more recently SBMA. Another neuropeptide that has a neurotrophic effect on MNs is insulin-like growth factor 1 (IGF-1), also known as somatomedin C. These two peptides are implicated in the activation of neuroprotective pathways exploitable in the amelioration of pathological outcomes related to MNDs.
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Affiliation(s)
- Emanuela Zuccaro
- Department of Biomedical Sciences, University of Padua, Padua, Italy.,Veneto Institute of Molecular Medicine, Padua, Italy.,Padova Neuroscience Center, Padua, Italy
| | - Diana Piol
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Manuela Basso
- Department of Cellular, Computational and Integrative Biology - CIBIO, University of Trento, Trento, Italy
| | - Maria Pennuto
- Department of Biomedical Sciences, University of Padua, Padua, Italy.,Veneto Institute of Molecular Medicine, Padua, Italy.,Padova Neuroscience Center, Padua, Italy
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10
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Slavin BR, Sarhane KA, von Guionneau N, Hanwright PJ, Qiu C, Mao HQ, Höke A, Tuffaha SH. Insulin-Like Growth Factor-1: A Promising Therapeutic Target for Peripheral Nerve Injury. Front Bioeng Biotechnol 2021; 9:695850. [PMID: 34249891 PMCID: PMC8264584 DOI: 10.3389/fbioe.2021.695850] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/02/2021] [Indexed: 01/27/2023] Open
Abstract
Patients who sustain peripheral nerve injuries (PNIs) are often left with debilitating sensory and motor loss. Presently, there is a lack of clinically available therapeutics that can be given as an adjunct to surgical repair to enhance the regenerative process. Insulin-like growth factor-1 (IGF-1) represents a promising therapeutic target to meet this need, given its well-described trophic and anti-apoptotic effects on neurons, Schwann cells (SCs), and myocytes. Here, we review the literature regarding the therapeutic potential of IGF-1 in PNI. We appraised the literature for the various approaches of IGF-1 administration with the aim of identifying which are the most promising in offering a pathway toward clinical application. We also sought to determine the optimal reported dosage ranges for the various delivery approaches that have been investigated.
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Affiliation(s)
- Benjamin R Slavin
- Department of Plastic and Reconstructive Surgery, School of Medicine, Johns Hopkins University, Baltimore, MD, United States.,Division of Plastic and Reconstructive Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Karim A Sarhane
- Department of Plastic and Reconstructive Surgery, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Nicholas von Guionneau
- Department of Plastic and Reconstructive Surgery, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Phillip J Hanwright
- Department of Plastic and Reconstructive Surgery, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Chenhu Qiu
- Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, United States.,Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, United States
| | - Hai-Quan Mao
- Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, United States.,Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, United States.,Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, United States.,Translational Tissue Engineering Center, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Ahmet Höke
- Department of Neurology, School of Medicine, Johns Hopkins University, Baltimore, MD, United States.,Department of Neuroscience, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Sami H Tuffaha
- Department of Plastic and Reconstructive Surgery, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
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11
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Garoufalia Z, Papadopetraki A, Karatza E, Vardakostas D, Philippou A, Kouraklis G, Mantas D. Insulin-like growth factor-I and wound healing, a potential answer to non-healing wounds: A systematic review of the literature and future perspectives. Biomed Rep 2021; 15:66. [PMID: 34155450 DOI: 10.3892/br.2021.1442] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/17/2021] [Indexed: 11/05/2022] Open
Abstract
The induction of wound healing by insulin-like growth factor-I (IGF-I) has been demonstrated in several animal studies; however, there are disproportionately fewer studies assessing its value in humans. The aim of the present review is to provide a comprehensive summary of all the available evidence pertaining to the effects of IGF-I administration on the process of wound anaplasias, both in human tissues in vivo and in cells in vitro. A systematic search of Medline, Scopus and Google Scholar was performed for relevant studies published until May 2020. Overall, 11 studies were included. Of these, 2 studies were conducted in human subjects, whereas the rest of them were performed using in vitro models of human cell lines. All studies demonstrated a positive association between IGF-I and wound anaplasias; IGF-I promoted the migration of keratinocytes, thus playing an important role in wound epithelialization as well as enabling wound bed contraction, and it also stimulated hyaluronan synthesis. The wound healing-promoting effect of IGF-I may be a great asset in dealing with the healing of challenging wounds; thus, this type of treatment could be extremely useful in addressing patients with large burn wounds, chronic diabetic ulcers and patients with impaired wound healing. Nevertheless, the route of recombinant IGF-I administration, the recommended dosage, as well as the indications for clinical use of this growth factor remain to be determined and thus, additional clinical trials are required, with a focus on the medical use of recombinant IGF-I in wound anaplasias.
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Affiliation(s)
- Zoe Garoufalia
- Second Department of Propaedeutic Surgery, Laiko General Hospital, Athens 11527, Greece
| | - Argyro Papadopetraki
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens 11527, Greece
| | - Elli Karatza
- Second Department of Propaedeutic Surgery, Laiko General Hospital, Athens 11527, Greece
| | - Dimitrios Vardakostas
- Second Department of Propaedeutic Surgery, Laiko General Hospital, Athens 11527, Greece
| | - Anastassios Philippou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens 11527, Greece
| | - Gregory Kouraklis
- Second Department of Propaedeutic Surgery, Laiko General Hospital, Athens 11527, Greece
| | - Dimitrios Mantas
- Second Department of Propaedeutic Surgery, Laiko General Hospital, Athens 11527, Greece
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12
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Mettyas T, Barton M, Sahar MSU, Lawrence F, Sanchez-Herrero A, Shah M, St John J, Bindra R. Negative Pressure Neurogenesis: A Novel Approach to Accelerate Nerve Regeneration after Complete Peripheral Nerve Transection. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2021; 9:e3568. [PMID: 34881144 PMCID: PMC8647885 DOI: 10.1097/gox.0000000000003568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 02/18/2021] [Indexed: 11/30/2022]
Abstract
Various modalities to facilitate nerve regeneration have been described in the literature with limited success. We hypothesized that negative pressure applied to a sectioned peripheral nerve would enhance nerve regeneration by promoting angiogenesis and axonal lengthening. METHODS Wistar rats' sciatic nerves were cut (creating ~7 mm nerve gap) and placed into a silicone T-tube, to which negative pressure was applied. The rats were divided into 4 groups: control (no pressure), group A (low pressure: 10 mm Hg), group B (medium pressure: 20/30 mm Hg) and group C (high pressure: 50/70 mm Hg). The nerve segments were retrieved after 7 days for gross and histological analysis. RESULTS In total, 22 rats completed the study. The control group showed insignificant nerve growth, whereas the 3 negative pressure groups showed nerve growth and nerve gap reduction. The true nerve growth was highest in group A (median: 3.54 mm) compared to group B, C, and control (medians: 1.19 mm, 1.3 mm, and 0.35 mm); however, only group A was found to be significantly different to the control group (**P < 0.01). Similarly, angiogenesis was observed to be significantly greater in group A (**P < 0.01) in comparison to the control. CONCLUSIONS Negative pressure stimulated nerve lengthening and angiogenesis within an in vivo rat model. Low negative pressure (10 mm Hg) provided superior results over the higher negative pressure groups and the control, favoring axonal growth. Further studies are required with greater number of rats and longer recovery time to assess the functional outcome.
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Affiliation(s)
- Tamer Mettyas
- From the Department of Orthopaedics, Queen Elizabeth II Hospital, Brisbane, Queensland, Australia
- School of Nursing and Midwifery, Griffith University, Australia
| | - Matthew Barton
- School of Nursing and Midwifery, Griffith University, Australia
- Menzies Health Institute Queensland, Griffith University, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Australia
| | - Muhammad Sana Ullah Sahar
- School of Engineering and Built Environment, Griffith University, Australia
- Department of Mechanical Engineering, Khwaja Fareed University of Engineering and information Technology, Rahim Yar Khan, Pakistan
| | - Felicity Lawrence
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Australia
| | | | - Megha Shah
- Menzies Health Institute Queensland, Griffith University, Australia
| | - James St John
- Menzies Health Institute Queensland, Griffith University, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Australia
- Griffith Institute for Drug Discovery, Griffith University, Australia
| | - Randy Bindra
- School of Medicine, Griffith University, Australia
- Department of Orthopaedics, Gold Coast University Hospital, Australia
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13
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Guedan-Duran A, Jemni-Damer N, Orueta-Zenarruzabeitia I, Guinea GV, Perez-Rigueiro J, Gonzalez-Nieto D, Panetsos F. Biomimetic Approaches for Separated Regeneration of Sensory and Motor Fibers in Amputee People: Necessary Conditions for Functional Integration of Sensory-Motor Prostheses With the Peripheral Nerves. Front Bioeng Biotechnol 2020; 8:584823. [PMID: 33224936 PMCID: PMC7670549 DOI: 10.3389/fbioe.2020.584823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 09/25/2020] [Indexed: 12/22/2022] Open
Abstract
The regenerative capacity of the peripheral nervous system after an injury is limited, and a complete function is not recovered, mainly due to the loss of nerve tissue after the injury that causes a separation between the nerve ends and to the disorganized and intermingled growth of sensory and motor nerve fibers that cause erroneous reinnervations. Even though the development of biomaterials is a very promising field, today no significant results have been achieved. In this work, we study not only the characteristics that should have the support that will allow the growth of nerve fibers, but also the molecular profile necessary for a specific guidance. To do this, we carried out an exhaustive study of the molecular profile present during the regeneration of the sensory and motor fibers separately, as well as of the effect obtained by the administration and inhibition of different factors involved in the regeneration. In addition, we offer a complete design of the ideal characteristics of a biomaterial, which allows the growth of the sensory and motor neurons in a differentiated way, indicating (1) size and characteristics of the material; (2) necessity to act at the microlevel, on small groups of neurons; (3) combination of molecules and specific substrates; and (4) temporal profile of those molecules expression throughout the regeneration process. The importance of the design we offer is that it respects the complexity and characteristics of the regeneration process; it indicates the appropriate temporal conditions of molecular expression, in order to obtain a synergistic effect; it takes into account the importance of considering the process at the group of neuron level; and it gives an answer to the main limitations in the current studies.
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Affiliation(s)
- Atocha Guedan-Duran
- Neuro-computing and Neuro-robotics Research Group, Complutense University of Madrid, Madrid, Spain
- Innovation Group, Institute for Health Research San Carlos Clinical Hospital (IdISSC), Madrid, Spain
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
| | - Nahla Jemni-Damer
- Neuro-computing and Neuro-robotics Research Group, Complutense University of Madrid, Madrid, Spain
- Innovation Group, Institute for Health Research San Carlos Clinical Hospital (IdISSC), Madrid, Spain
| | - Irune Orueta-Zenarruzabeitia
- Neuro-computing and Neuro-robotics Research Group, Complutense University of Madrid, Madrid, Spain
- Innovation Group, Institute for Health Research San Carlos Clinical Hospital (IdISSC), Madrid, Spain
| | - Gustavo Víctor Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Department of Material Science, Civil Engineering Superior School, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
- Silk Biomed SL, Madrid, Spain
| | - José Perez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Department of Material Science, Civil Engineering Superior School, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
- Silk Biomed SL, Madrid, Spain
| | - Daniel Gonzalez-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
- Silk Biomed SL, Madrid, Spain
| | - Fivos Panetsos
- Neuro-computing and Neuro-robotics Research Group, Complutense University of Madrid, Madrid, Spain
- Innovation Group, Institute for Health Research San Carlos Clinical Hospital (IdISSC), Madrid, Spain
- Silk Biomed SL, Madrid, Spain
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14
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Sugiyama M, Ito T, Furukawa T, Hirayama A, Kakehata S. The effect of insulin-like growth factor 1 on the recovery of facial nerve function in a guinea pig model of facial palsy. J Physiol Sci 2020; 70:28. [PMID: 32513097 PMCID: PMC10717557 DOI: 10.1186/s12576-020-00755-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 05/21/2020] [Indexed: 01/13/2023]
Abstract
The efficacy of insulin-like growth factor 1 (IGF-1) in the treatment of peripheral facial nerve palsy was investigated using an animal model. The facial nerve within the temporal bone was exposed and compressed by clamping. The animals were treated with either IGF-1 or saline which was topically administered by a gelatin-based sustained-release hydrogel via an intratemporal route. The recovery from facial nerve palsy was evaluated at 8 weeks postoperatively based on eyelid closure, complete recovery rate, electroneurography and number of axons found on the facial nerve. IGF-1 treatment resulted in significant improvement in the changes of the degree of eyelid closure over the total time period and complete recovery rate. A separate study showed that IGF-1 receptor mRNA was expressed in facial nerves up to 14 days after the nerve-clamping procedure. IGF-1 was thus found to be effective in the treatment of peripheral facial nerve palsy when topically applied using a sustained-release gelatin-based hydrogel via an intratemporal route.
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Affiliation(s)
- Motoyasu Sugiyama
- Department of Otolaryngology, Head and Neck Surgery, Yamagata University Faculty of Medicine, 2-2-2 Iida-Nishi, Yamagata-shi, Yamagata, 990-9585, Japan
| | - Tsukasa Ito
- Department of Otolaryngology, Head and Neck Surgery, Yamagata University Faculty of Medicine, 2-2-2 Iida-Nishi, Yamagata-shi, Yamagata, 990-9585, Japan
| | - Takatoshi Furukawa
- Department of Otolaryngology, Head and Neck Surgery, Yamagata University Faculty of Medicine, 2-2-2 Iida-Nishi, Yamagata-shi, Yamagata, 990-9585, Japan
| | - Atsushi Hirayama
- Public Health, Department of Social Medicine, Graduate School of Medicine, Osaka University, 2-15 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Seiji Kakehata
- Department of Otolaryngology, Head and Neck Surgery, Yamagata University Faculty of Medicine, 2-2-2 Iida-Nishi, Yamagata-shi, Yamagata, 990-9585, Japan.
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15
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Lázár BA, Jancsó G, Sántha P. Modulation of Sensory Nerve Function by Insulin: Possible Relevance to Pain, Inflammation and Axon Growth. Int J Mol Sci 2020; 21:ijms21072507. [PMID: 32260335 PMCID: PMC7177741 DOI: 10.3390/ijms21072507] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 12/16/2022] Open
Abstract
Insulin, besides its pivotal role in energy metabolism, may also modulate neuronal processes through acting on insulin receptors (InsRs) expressed by neurons of both the central and the peripheral nervous system. Recently, the distribution and functional significance of InsRs localized on a subset of multifunctional primary sensory neurons (PSNs) have been revealed. Systematic investigations into the cellular electrophysiology, neurochemistry and morphological traits of InsR-expressing PSNs indicated complex functional interactions among specific ion channels, proteins and neuropeptides localized in these neurons. Quantitative immunohistochemical studies have revealed disparate localization of the InsRs in somatic and visceral PSNs with a dominance of InsR-positive neurons innervating visceral organs. These findings suggested that visceral spinal PSNs involved in nociceptive and inflammatory processes are more prone to the modulatory effects of insulin than somatic PSNs. Co-localization of the InsR and transient receptor potential vanilloid 1 (TRPV1) receptor with vasoactive neuropeptides calcitonin gene-related peptide and substance P bears of crucial importance in the pathogenesis of inflammatory pathologies affecting visceral organs, such as the pancreas and the urinary bladder. Recent studies have also revealed significant novel aspects of the neurotrophic propensities of insulin with respect to axonal growth, development and regeneration.
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Affiliation(s)
- Bence András Lázár
- Department of Psychiatry, University of Szeged, H-6725 Szeged, Hungary
- Correspondence:
| | - Gábor Jancsó
- Department of Physiology, University of Szeged, H-6720 Szeged, Hungary; (G.J.); (P.S.)
| | - Péter Sántha
- Department of Physiology, University of Szeged, H-6720 Szeged, Hungary; (G.J.); (P.S.)
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16
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Haney NM, Talwar S, Akula PK, Reddy AG, Pema GS, Ninh TV, Rezk BM, Heidari Z, Bouljihad MT, Sikka SC, John V, Abdel-Mageed AB, Hellstrom WJG. Insulin-Like Growth Factor-1-Loaded Polymeric Poly(Lactic-Co-Glycolic) Acid Microspheres Improved Erectile Function in a Rat Model of Bilateral Cavernous Nerve Injury. J Sex Med 2020; 16:383-393. [PMID: 30846112 DOI: 10.1016/j.jsxm.2018.12.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 12/20/2018] [Accepted: 12/22/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Previous studies have documented improvement in erectile function after bilateral cavernous nerve injury (BCNI) in rats with the use of pioglitazone. Our group determined this improvement to be mediated by the insulin-like growth factor-1 (IGF-1) pathway. AIM To eliminate the systemic effects of pioglitazone and evaluate the local delivery of IGF-1 by polymeric microspheres after BCNI in the rat. METHODS Male Sprague-Dawley rats aged 10-12 weeks were assigned at random to 3 groups: sham operation with phosphate buffered saline (PBS)-loaded microspheres (sham group), crush injury with PBS-loaded microspheres (crush group), and crush injury with IGF-1-loaded microspheres (IGF-1 group). Poly(lactic-co-glycolic) acid microspheres were injected underneath the major pelvic ganglion (MPG). IGF-1 was released at approximately 30 ng/mL/day per MPG per rat. OUTCOMES Functional results were demonstrated by maximal intracavernosal pressure (ICP) normalized to mean arterial pressure (MAP). Protein-level analysis data of IGF-1 receptor (IGF-1R), extracellular signal-regulated kinase (ERK)-1/2, and neuronal nitric oxide synthase (nNOS) were obtained using Western blot analysis and immunohistochemistry for both the cavernosal tissue and the MPG and cavernous nerve (CN). RESULTS At 2 weeks after nerve injury, animals treated with IGF-1 demonstrated improved erectile functional recovery (ICP/MAP) at all voltages compared with BCNI (2.5V, P = .001; 5V, P < .001; 7.5V, P < .001). Western blot results revealed that up-regulation of the IGF-1R and ERK-1/2 in both the nervous and erectile tissue was associated with improved erectile function recovery. There were no significant between-group differences in nNOS protein levels in cavernosal tissue, but there was an up-regulation of nNOS in the MPG and CN. Immunohistochemistry confirmed these trends. CLINICAL TRANSLATION Local up-regulation of the IGF-1R in the neurovascular bed at the time of nerve injury may help men preserve erectile function after pelvic surgery, such as radical prostatectomy, eliminating the need for systemic therapy. STRENGTHS & LIMITATIONS This study demonstrates that local drug delivery to the MPG and CN can affect the CN tissue downstream, but did not investigate the potential effects of up-regulation of the growth factor receptors on prostate cancer tissue. CONCLUSION Stimulating the IGF-1R at the level of the CN has the potential to mitigate erectile dysfunction in men after radical prostatectomy, but further research is needed to evaluate the safety of this growth factor in the setting of prostate cancer. Haney NM, Talwar S, Akula PK, et al. Insulin-Like Growth Factor-1-Loaded Polymeric Poly(Lactic-Co-Glycolic) Acid Microspheres Improved Erectile Function in a Rat Model of Bilateral Cavernous Nerve Injury. J Sex Med 2019;16:383-393.
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Affiliation(s)
- Nora M Haney
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Sudha Talwar
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Prasad K Akula
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Amit G Reddy
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Geoffroy Sanga Pema
- Department of Natural Sciences, Southern University at New Orleans, New Orleans, LA, USA
| | - Thien V Ninh
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Bashir M Rezk
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA; Department of Natural Sciences, Southern University at New Orleans, New Orleans, LA, USA
| | - Zahra Heidari
- Department of Biochemical Engineering, Tulane University, New Orleans, LA, USA
| | - Mostafa T Bouljihad
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA, USA
| | - Suresh C Sikka
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Vijay John
- Department of Biochemical Engineering, Tulane University, New Orleans, LA, USA
| | - Asim B Abdel-Mageed
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Wayne J G Hellstrom
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA.
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17
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Liao CF, Chen CC, Lu YW, Yao CH, Lin JH, Way TD, Yang TY, Chen YS. Effects of endogenous inflammation signals elicited by nerve growth factor, interferon-γ, and interleukin-4 on peripheral nerve regeneration. J Biol Eng 2019; 13:86. [PMID: 31754373 PMCID: PMC6854735 DOI: 10.1186/s13036-019-0216-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 10/21/2019] [Indexed: 12/15/2022] Open
Abstract
Background Large gap healing is a difficult issue in the recovery of peripheral nerve injury. The present study provides in vivo trials of silicone rubber chambers filled with collagen containing IFN-γ or IL-4 to bridge a 15 mm sciatic nerve defect in rats. Fillings of NGF and normal saline were used as the positive and negative controls. Neuronal electrophysiology, neuronal connectivity, macrophage infiltration, location and expression levels of calcitonin gene-related peptide and histology of the regenerated nerves were evaluated. Results At the end of 6 weeks, animals from the groups of NGF and IL-4 had dramatic higher rates of successful regeneration (100 and 80%) across the wide gap as compared to the groups of IFN-γ and saline controls (30 and 40%). In addition, the NGF group had significantly higher NCV and shorter latency compared to IFN-γ group (P < 0.05). The IL-4 group recruited significantly more macrophages in the nerves as compared to the saline controls and the NGF-treated animals (P < 0.05). Conclusions The current study demonstrated that NGF and IL-4 show potential growth-promoting capability for peripheral nerve regeneration. These fillings in the bridging conduits may modulate local inflammatory conditions affecting recovery of the nerves.
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Affiliation(s)
- Chien-Fu Liao
- 1Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Chung-Chia Chen
- Linsen Chinese Medicine and Kunming Branch, Taipei City Hospital, Taipei, Taiwan
| | - Yu-Wen Lu
- 3Department of Chinese Medicine, Show Chwan Memorial Hospital, Chunaghua, Taiwan.,4Department of Chinese Medicine, Chang Bing Show Chwan Memorial Hospital, Changhua, Taiwan
| | - Chun-Hsu Yao
- 5Lab of Biomaterials, School of Chinese Medicine, China Medical University , Taichung, Taiwan.,6Biomaterials Translational Research Center, China Medical University Hospital, Taichung, Taiwan.,7Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan
| | - Jia-Horng Lin
- 8Department of Fiber and Composite Materials, Feng Chia University, Taichung, Taiwan
| | - Tzong-Der Way
- 1Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Tse-Yen Yang
- 9Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,10Center for General Education & Master Program of Digital Health Innovation, China Medical University, Taichung, Taiwan
| | - Yueh-Sheng Chen
- 5Lab of Biomaterials, School of Chinese Medicine, China Medical University , Taichung, Taiwan.,6Biomaterials Translational Research Center, China Medical University Hospital, Taichung, Taiwan.,7Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan.,10Center for General Education & Master Program of Digital Health Innovation, China Medical University, Taichung, Taiwan.,11College of Humanities and Sciences, China Medical University, Taichung, Taiwan
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18
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González Porto SA, Domenech N, Blanco FJ, Centeno Cortés A, Rivadulla Fernández C, Álvarez Jorge Á, Sánchez Ibáñez J, Rendal Vázquez E. Intraneural IFG-1 in Cryopreserved Nerve Isografts Increase Neural Regeneration and Functional Recovery in the Rat Sciatic Nerve. Neurosurgery 2019; 85:423-431. [PMID: 30060164 DOI: 10.1093/neuros/nyy339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 06/25/2018] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Insulin-like growth factor 1 (IGF-1) was found to stimulate Schwann cell mitosis. Exogenous IGF-1 may improve nerve regeneration after cryopreservation. OBJECTIVE To evaulate the effect of intraneural administration of IGF-1 in cryopreserved nerve isografts. METHODS Eighteen millimeter grafts were used for bridging an 18-mm defect in the rat sciatic nerve. A total of 57 rats were randomly divided into three groups: (1) autograft (Group 1); (2) cryopreserved isograft (Group 2); (3) cryopreserved isograft with intraneural IGF-1 administration (Group 3). 12 weeks after surgery, functional recovery (Sciatic functional index [SFI], Swing speed [SS], nerve conduction velocity [NCV], amplitude of compound motor action potentials [CMAP], and gastrocnemius muscle index [GMI]) and nerve regeneration (myelin sheath area, total fiber counts, fiber density, and fiber width) were all evaluated. RESULTS The intraneural injection of IGF-1 significantly improved SFI and SS at weeks 10 and 12. There were no statistical differences between Groups 1 and 3 in any of the SFI or SS evaluations. CMAP and NCV in Group 1 were significantly higher than in Groups 2 and 3, and Group 3 had significantly higher CMAP and NCV compared to Group 2. No significant differences were found in fiber width. The number of nerve fibers, percentage of myelinated fibers, fiber density, and GMI was significantly higher in Group 1 compared to Group 2, but no significant differences were found between Groups 1 and 3. CONCLUSION The results show that intraneural injection of IGF-1 in an 18 mm cryopreserved isograft improve axonal regeneration and functional recovery.
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Affiliation(s)
| | - Nieves Domenech
- Biobanco A Coruña, Instituto de Investigación Biomédica de A Coruña (INIBIC), Servicio Galego de Saúde (SERGAS), A Coruña, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Francisco J Blanco
- Grupo de Investigación de Proteómica-PBR2-ProteoRed/ISCIII-Servicio de Reumatología, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Servicio Galego de Saúde (SERGAS), Universidade da Coruña (UDC), A Coruña, Spain
| | - Alberto Centeno Cortés
- Centro Tecnológico de Formación XXIAC, Instituto de Investigacións Biomédicas de A Coruña (INIBIC), Servicio Galego de Saúde (SERGAS), A Coruña, Spain
| | - Casto Rivadulla Fernández
- Grupo de Neurociencia e Control Motor, NEUROcom, Facultade de Ciencias da Saúde, Departamento de Ciencias Biomédicas, Fisioterapia e Medicina, Instituto de Investigacións Biomédicas de A Coruña (INIBIC), A Coruña, Spain
| | - Ángel Álvarez Jorge
- Servicio de Cirugía Plástica, Complexo Hospitalario Universitario de A Coruña (CHUAC), Servicio Galego de Saúde (SERGAS), A Coruña, Spain
| | - Jacinto Sánchez Ibáñez
- Unidad de Criobiología, Banco de Tejidos, Complexo Hospitalario Universitario de A Coruña (CHUAC), Servicio Galego de Saúde (SERGAS), A Coruña, Spain
| | - Esther Rendal Vázquez
- Unidad de Criobiología, Banco de Tejidos, Complexo Hospitalario Universitario de A Coruña (CHUAC), Servicio Galego de Saúde (SERGAS), A Coruña, Spain
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Guy R, Grynspan F, Ben-Zur T, Panski A, Lamdan R, Danon U, Yaffe D, Offen D. Human Muscle Progenitor Cells Overexpressing Neurotrophic Factors Improve Neuronal Regeneration in a Sciatic Nerve Injury Mouse Model. Front Neurosci 2019; 13:151. [PMID: 30872995 PMCID: PMC6400854 DOI: 10.3389/fnins.2019.00151] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 02/11/2019] [Indexed: 01/21/2023] Open
Abstract
The peripheral nervous system has an intrinsic ability to regenerate after injury. However, this process is slow, incomplete, and often accompanied by disturbing motor and sensory consequences. Sciatic nerve injury (SNI), which is the most common model for studying peripheral nerve injury, is characterized by damage to both motor and sensory fibers. The main goal of this study is to examine the feasibility of administration of human muscle progenitor cells (hMPCs) overexpressing neurotrophic factor (NTF) genes, known to protect peripheral neurons and enhance axon regeneration and functional recovery, to ameliorate motoric and sensory deficits in SNI mouse model. To this end, hMPCs were isolated from a human muscle biopsy, and manipulated to ectopically express brain-derived neurotrophic factor (BDNF), glial-cell-line-derived neurotrophic factor (GDNF), vascular endothelial growth factor (VEGF), and insulin-like growth factor (IGF-1). These hMPC-NTF were transplanted into the gastrocnemius muscle of mice after SNI, and motor and sensory functions of the mice were assessed using the CatWalk XT system and the hot plate test. ELISA analysis showed that genetically manipulated hMPC-NTF express significant amounts of BDNF, GDNF, VEGF, or IGF-1. Transplantation of 3 × 106 hMPC-NTF was shown to improve motor function and gait pattern in mice following SNI surgery, as indicated by the CatWalk XT system 7 days post-surgery. Moreover, using the hot-plate test, performed 6 days after surgery, the treated mice showed less sensory deficits, indicating a palliative effect of the treatment. ELISA analysis following transplantation demonstrated increased NTF expression levels in the gastrocnemius muscle of the treated mice, reinforcing the hypothesis that the observed positive effect was due to the transplantation of the genetically manipulated hMPC-NTF. These results show that genetically modified hMPC can alleviate both motoric and sensory deficits of SNI. The use of hMPC-NTF demonstrates the feasibility of a treatment paradigm, which may lead to rapid, high-quality healing of damaged peripheral nerves due to administration of hMPC. Our approach suggests a possible clinical application for the treatment of peripheral nerve injury.
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Affiliation(s)
- Reut Guy
- Laboratory of Neuroscience, Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | - Tali Ben-Zur
- Laboratory of Neuroscience, Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Avraham Panski
- Department of Orthopedic Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Ron Lamdan
- Department of Orthopedic Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Uri Danon
- Stem Cell Medicine Ltd., Jerusalem, Israel
| | - David Yaffe
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Daniel Offen
- Laboratory of Neuroscience, Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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20
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Ai A, Behforouz A, Ehterami A, Sadeghvaziri N, Jalali S, Farzamfar S, Yousefbeigi A, Ai A, goodarzi A, Salehi M, Ai J. Sciatic nerve regeneration with collagen type I hydrogel containing chitosan nanoparticle loaded by insulin. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1534114] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Armin Ai
- Dental Student of Scientific Research Center, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Aria Behforouz
- Dental Student of Scientific Research Center, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Arian Ehterami
- Department of Mechanical and Aerospace Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Nooshin Sadeghvaziri
- Dental Student of Scientific Research Center, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Samar Jalali
- Dental Student of Scientific Research Center, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Farzamfar
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Aylar Yousefbeigi
- Dental Student of Scientific Research Center, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Arman Ai
- School of medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Arash goodarzi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
- Tissue Engineering and Stem Cells Research Center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Jafar Ai
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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21
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Moskow J, Ferrigno B, Mistry N, Jaiswal D, Bulsara K, Rudraiah S, Kumbar SG. Review: Bioengineering approach for the repair and regeneration of peripheral nerve. Bioact Mater 2018; 4:107-113. [PMID: 30723843 PMCID: PMC6351356 DOI: 10.1016/j.bioactmat.2018.09.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/03/2018] [Accepted: 09/03/2018] [Indexed: 12/29/2022] Open
Abstract
Complex craniofacial surgeries of damaged tissues have several limitations, which present complications and challenges when trying to replicate facial function and structure. Traditional treatment techniques have shown suitable nerve function regeneration with various drawbacks. As technology continues to advance, new methods have been explored in order to regenerate damaged nerves in an effort to more efficiently and effectively regain original function and structure. This article will summarize recent bioengineering strategies involving biodegradable composite scaffolds, bioactive factors, and external stimuli alone or in combination to support peripheral nerve regeneration. Particular emphasis is made on the contributions of growth factors and electrical stimulation on the regenerative process. Craniofacial nerve repair surgeries have limitations and often result in insufficient restoration of facial function. Nerve repair strategies for critical defects have often resulted in failure to re-establish sufficient nerve function. Biochemical molecules promote tissue regeneration by differentiation of recruited cells to mature neuronal fates. Electrical stimulation promotes regeneration of axons and provide signals for native cells to differentiate.
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Affiliation(s)
- Joshua Moskow
- Department of Orthopaedic Surgery, University of Connecticut Health, 263Farmington Ave., Farmington, CT 06030, USA.,Department of Biomedical Engineering, University of Connecticut, 260Glenbrook Road, Unit 3247, Storrs, CT 06269, USA
| | - Bryan Ferrigno
- Department of Orthopaedic Surgery, University of Connecticut Health, 263Farmington Ave., Farmington, CT 06030, USA
| | - Nikhil Mistry
- Department of Orthopaedic Surgery, University of Connecticut Health, 263Farmington Ave., Farmington, CT 06030, USA
| | - Devina Jaiswal
- Department of Orthopaedic Surgery, University of Connecticut Health, 263Farmington Ave., Farmington, CT 06030, USA.,Department of Biomedical Engineering, University of Connecticut, 260Glenbrook Road, Unit 3247, Storrs, CT 06269, USA
| | - Ketan Bulsara
- Department of Surgery, University of Connecticut Health, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Swetha Rudraiah
- Department of Orthopaedic Surgery, University of Connecticut Health, 263Farmington Ave., Farmington, CT 06030, USA.,Department of Pharmaceutical Sciences, School of Pharmacy, University of Saint Joseph, 229 Trumbull St., Hartford CT 06103, USA
| | - Sangamesh G Kumbar
- Department of Orthopaedic Surgery, University of Connecticut Health, 263Farmington Ave., Farmington, CT 06030, USA.,Department of Biomedical Engineering, University of Connecticut, 260Glenbrook Road, Unit 3247, Storrs, CT 06269, USA
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Tomlinson JE, Žygelytė E, Grenier JK, Edwards MG, Cheetham J. Temporal changes in macrophage phenotype after peripheral nerve injury. J Neuroinflammation 2018; 15:185. [PMID: 29907154 PMCID: PMC6003127 DOI: 10.1186/s12974-018-1219-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/29/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Macrophages play a key role in peripheral nerve repair and demonstrate complex phenotypes that are highly dependent on microenvironmental cues. METHODS We determined temporal changes in macrophage gene expression over time using RNA sequencing after fluorescence-activated cell sorting (FACS) macrophage populations from injured peripheral nerve. We identified key upstream regulators and dominant pathways using ingenuity pathway analysis and confirmed these changes with NanoString technology. We then investigate the effects of extreme polarizers of macrophage phenotype (IL4 and IFNγ) on nerve regeneration. We determined macrophage gene expression in vivo at the site of peripheral nerve injury with NanoString technology, and assessed recovery from sciatic nerve injury by cranial tibial muscle weights and retrograde labeling motor neurons in mice with deletion of IL4 or IFNγ receptors. RESULTS We demonstrate that IL4R and IFNγR deletions provide complementary responses to polarization, and alter expression of genes associated with angiogenesis and axonal extension, but do not influence recovery from peripheral nerve transection at 8 weeks after repair. CONCLUSIONS Overall, this study provides a framework to evaluate the phenotype of macrophages over time, and provides a broader and more precise assessment of gene expression changes than has previously been commonly used. This data suggests ways in which polarization may be modulated to improve repair.
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Affiliation(s)
- Joy E. Tomlinson
- Cornell University College of Veterinary Medicine, Ithaca, NY USA
| | - Emilija Žygelytė
- Cornell University College of Veterinary Medicine, Ithaca, NY USA
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23
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Molecular Mechanism of the "Babysitter" Procedure for Nerve Regeneration and Muscle Preservation in Peripheral Nerve Repair in a Rat Model. Ann Plast Surg 2018; 78:704-711. [PMID: 27984220 DOI: 10.1097/sap.0000000000000952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To investigate the molecular mechanism of nerve "babysitter" for nerve regeneration and muscle preservation in peripheral nerve repair. METHODS Eighty rats were equalized into 4 groups: peroneal nerve transected, group A received no treatment; group B underwent end-to-end repair; group C underwent end-to-side "babysitter" with donor epineurial window; group D underwent end-to-side "babysitter" with 40% donor neurectomy. During second-stage procedure, end-to-end neurorrhaphies were executed in groups A, C, and D. Expression of Insulin-like growth factor (IGF)-1 in spinal cord and IGF-1, TNF-like weak inducer of apoptosis (TWEAK), and Fn14 in anterior tibial muscles were evaluated by histopathology at 4-, 8-, 12-, and 24-week timepoints postoperatively. RESULTS At 4 weeks, group D expressed comparable IGF-1 with group B, and greater value than groups A and C in spinal cord. By 24 weeks, groups B and D showed higher values than groups A and C. Insulin-like growth factor 1 in muscles were greater in groups C and D than in groups A and B at 4 weeks, and comparable in all groups at 24 weeks. At 4 weeks, immunoreactive scores of TWEAK were 9.00 ± 0, 3.00 ± 0, 6.75 ± 0.75, and 6.75 ± 0.75, respectively. No differences were noticed in all groups by 24 weeks. At 4 weeks, Fn14 were similar in groups A, C, and D, but lower in group B. Group D showed comparable Fn14 with groups B and C, but lower value than group A at 24 weeks. CONCLUSIONS End-to-side nerve "babysitter" in peripheral nerve could promote fiber regeneration and muscle preservation by regulating expression of IGF-1 and TWEAK-Fn14. End-to-side "babysitter" with partial donor neurectomy could achieve comparable effects with end-to-end repair.
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24
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Increased cutaneous miR-let-7d expression correlates with small nerve fiber pathology in patients with fibromyalgia syndrome. Pain 2017; 157:2493-2503. [PMID: 27429177 DOI: 10.1097/j.pain.0000000000000668] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Fibromyalgia syndrome (FMS) is a chronic widespread pain condition probably comprising subgroups with different underlying pathomechanisms. There is increasing evidence for small nerve fiber impairment in subgroups of patients with FMS. MicroRNAs (miRNAs) regulate molecular factors determining nerve de- and re-generation. We investigated whether systemic and cutaneous miRNA expression in patients with FMS is related to small nerve fiber pathology. We confirmed previous findings of disturbed small fiber function and reduced intraepidermal nerve fiber density in subgroups of patients with FMS. We found 51 aberrantly expressed miRNAs in white blood cells of patients with FMS, of which miR-let-7d correlated with reduced small nerve fiber density in patients with FMS. Furthermore, we demonstrated miR-let-7d and its downstream target insulin-like growth factor-1 receptor as being aberrantly expressed in skin of patients with FMS with small nerve fiber impairment. Our study gives further evidence of small nerve fiber pathology in FMS subgroups and provides a missing link in the pathomechanism that may lead to small fiber loss in subgroups of patients with FMS.
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25
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Abstract
The FOXO family of transcription factors plays a conserved role in longevity and tissue homeostasis across species. In the mammalian nervous system, emerging evidence has implicated FOXOs in cognitive performance, stem cell maintenance, regeneration, and protection against stress. Much of what we know about neuronal functions of FOXO emerged from recent studies in C. elegans. Similar to mammalian FOXO, the worm FOXO ortholog, called DAF-16, regulates learning and memory, regeneration, and stress resistance in neurons. Here, we discuss the current state of our knowledge of FOXO’s functions in neurons in mammals and invertebrates, and highlight areas where our understanding is limited. Defining the function of FOXO factors in the healthy, aged, and diseased brain may have important implications for improving healthspan and treating neurodegenerative disease.
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Affiliation(s)
- Sun Y Kim
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI, USA
| | - Ashley E Webb
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI, USA
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26
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Teymur H, Tiftikcioglu YO, Cavusoglu T, Tiftikcioglu BI, Erbas O, Yigitturk G, Uyanikgil Y. Effect of platelet-rich plasma on reconstruction with nerve autografts. Kaohsiung J Med Sci 2017; 33:69-77. [DOI: 10.1016/j.kjms.2016.11.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/04/2016] [Accepted: 11/14/2016] [Indexed: 01/09/2023] Open
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27
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Abstract
While the peripheral nervous system has the capacity to regenerate following a nerve injury, it is often at a slow rate and results in unsatisfactory recovery, leaving patients with reduced function. Many regeneration associated genes have been identified over the years, which may shed some insight into how we can manipulate this intrinsic regenerative ability to enhance repair following peripheral nerve injuries. Our lab has identified the membrane bound protease beta-site amyloid precursor protein-cleaving enzyme 1 (BACE1), or beta secretase, as a potential negative regulator of peripheral nerve regeneration. When beta secretase activity levels are abolished via a null mutation in mice, peripheral regeneration is enhanced following a sciatic nerve crush injury. Conversely, when activity levels are greatly increased by overexpressing beta secretase in mice, nerve regeneration and functional recovery are impaired after a sciatic nerve crush injury. In addition to our work, many substrates of beta secretase have been found to be involved in regulating neurite outgrowth and some have even been identified as regeneration associated genes. In this review, we set out to discuss BACE1 and its substrates with respect to axonal regeneration and speculate on the possibility of utilizing BACE1 inhibitors to enhance regeneration following acute nerve injury and potential uses in peripheral neuropathies.
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Affiliation(s)
- Carolyn Tallon
- Department of Neurology at Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Mohamed H Farah
- Department of Neurology at Johns Hopkins School of Medicine, Baltimore, MD, USA
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Dyer AH, Vahdatpour C, Sanfeliu A, Tropea D. The role of Insulin-Like Growth Factor 1 (IGF-1) in brain development, maturation and neuroplasticity. Neuroscience 2016; 325:89-99. [DOI: 10.1016/j.neuroscience.2016.03.056] [Citation(s) in RCA: 192] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 02/29/2016] [Accepted: 03/24/2016] [Indexed: 02/07/2023]
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29
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Growth Hormone Therapy Accelerates Axonal Regeneration, Promotes Motor Reinnervation, and Reduces Muscle Atrophy following Peripheral Nerve Injury. Plast Reconstr Surg 2016; 137:1771-1780. [DOI: 10.1097/prs.0000000000002188] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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30
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Tuffaha SH, Singh P, Budihardjo JD, Means KR, Higgins JP, Shores JT, Salvatori R, Höke A, Lee WPA, Brandacher G. Therapeutic augmentation of the growth hormone axis to improve outcomes following peripheral nerve injury. Expert Opin Ther Targets 2016; 20:1259-65. [PMID: 27192539 DOI: 10.1080/14728222.2016.1188079] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Peripheral nerve injuries often result in debilitating motor and sensory deficits. There are currently no therapeutic agents that are clinically available to enhance the regenerative process. Following surgical repair, axons often must regenerate long distances to reach and reinnervate distal targets. Progressive atrophy of denervated muscle and Schwann cells (SCs) prior to reinnervation contributes to poor outcomes. Growth hormone (GH)-based therapies have the potential to accelerate axonal regeneration while at the same time limiting atrophy of muscle and the distal regenerative pathway prior to reinnervation. AREAS COVERED In this review, we discuss the potential mechanisms by which GH-based therapies act on the multiple tissue types involved in peripheral nerve regeneration to ultimately enhance outcomes, and review the pertinent mechanistic and translational studies that have been performed. We also address potential secondary benefits of GH-based therapies pertaining to improved bone, tendon and wound healing in the setting of peripheral nerve injury. EXPERT OPINION GH-based therapies carry great promise for the treatment of peripheral nerve injuries, given the multi-modal mechanism of action not seen with other experimental therapies. A number of FDA-approved drugs that augment the GH axis are currently available, which may facilitate clinical translation.
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Affiliation(s)
- Sami H Tuffaha
- a Department of Plastic and Reconstructive Surgery , Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Prateush Singh
- a Department of Plastic and Reconstructive Surgery , Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Joshua D Budihardjo
- a Department of Plastic and Reconstructive Surgery , Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | | | | | - Jaimie T Shores
- a Department of Plastic and Reconstructive Surgery , Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Roberto Salvatori
- c Department of Medicine , Division of Endocrinology, Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Ahmet Höke
- d Department of Neurology , Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - W P Andrew Lee
- a Department of Plastic and Reconstructive Surgery , Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Gerald Brandacher
- a Department of Plastic and Reconstructive Surgery , Johns Hopkins University School of Medicine , Baltimore , MD , USA
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Focal release of neurotrophic factors by biodegradable microspheres enhance motor and sensory axonal regeneration in vitro and in vivo. Brain Res 2016; 1636:93-106. [DOI: 10.1016/j.brainres.2016.01.051] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 01/20/2016] [Accepted: 01/31/2016] [Indexed: 11/23/2022]
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IGF-1 as an Important Endogenous Growth Factor for Recovery from Impaired Urethral Continence Function in Rats with Simulated Childbirth Injury. J Urol 2016; 195:1927-35. [PMID: 26767520 DOI: 10.1016/j.juro.2015.12.087] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/27/2015] [Indexed: 11/22/2022]
Abstract
PURPOSE We examined the functional role of endogenous IGF-1 (insulin-like growth factor-1) in the recovery phase of stress urinary incontinence induced by simulated childbirth trauma using an IGF-1 receptor inhibitor. MATERIALS AND METHODS Simulated birth trauma was induced by vaginal distension in female Sprague Dawley® rats. The IGF-1 receptor antagonist JB-1 (10 and 100 μg/kg per day) or vehicle was continuously delivered from 1 day before vaginal distension for 7 days using subcutaneous osmotic pumps. Seven, 14 and 21 days after vaginal distension the effect of JB-1 treatment was examined by functional analyses, including leak point and urethral baseline pressure, and urethral responses during passive increments in intravesical pressure, as well as molecular analyses in urethral tissues, including phosphorylation of Akt, apoptotic changes and peripheral nerve density using Western blot and immunohistochemistry. RESULTS On functional analyses vehicle treated rats with vaginal distension had significantly decreased leak point and urethral baseline pressure, and urethral responses at 7 days, which recovered to the normal level 14 and 21 days after vaginal distension. In the JB-1 treated vaginal distension group leak point and urethral baseline pressure, and urethral responses were still significantly reduced 21 days after vaginal distension. On molecular analyses JB-1 treatment increased apoptotic cells, induced a significant decrease in phosphorylated Akt and prolonged the decrease of peripheral nerve density in urethral tissues. CONCLUSIONS Suppression of endogenous IGF-1 activity delayed recovery from stress urinary incontinence induced by simulated childbirth trauma in rats. Thus, IGF-1 is likely to be an important endogenous mediator for functional recovery from childbirth related stress urinary incontinence. This suggests that IGF-1 could be an effective target for treating stress urinary incontinence in women.
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Influence of insulin-like growth factor I on nerve regeneration using allografts: a sciatic nerve model. J Craniofac Surg 2015; 25:1510-4. [PMID: 25006924 DOI: 10.1097/scs.0000000000000783] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Effects of insulin-like growth factor I (IGF I) on peripheral nerve regeneration was studied using allografts in a rat sciatic nerve model. Thirty male white Wistar rats were divided into 3 experimental groups (n = 10) randomly: normal control group (NC), allograft group (ALLO), and IGF I-treated group (ALLO/IGF). In the NC group, the left sciatic nerve was exposed through a gluteal muscle incision and, after homeostasis, the muscle was sutured. In the ALLO group, the left sciatic nerve was exposed through a gluteal muscle incision and transected proximal to the tibioperoneal bifurcation where a 10-mm segment was excised. The same procedure was performed in the ALLO/IGF group. The harvested nerves of the rats of the ALLO group were served as allograft for the ALLO/IGF group and vice versa. The NC and ALLO groups received 10 μL of sterile phosphate buffered saline intraperitoneally once a day for 1 week, and the ALLO/IGF group received 10 μL of IGF I (100 ng/kg per day) intraperitoneally once a day for 1 week. Behavioral testing, sciatic nerve functional study and the gastrocnemius muscle mass showed earlier regeneration of axons in the ALLO/IGF group than in the ALLO group (P < 0.05). Administration of IGF I could accelerate functional recovery after nerve allografting in the sciatic nerve and may have clinical implications for the surgical management of patients after facial nerve transection.
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Faroni A, Mobasseri SA, Kingham PJ, Reid AJ. Peripheral nerve regeneration: experimental strategies and future perspectives. Adv Drug Deliv Rev 2015; 82-83:160-7. [PMID: 25446133 DOI: 10.1016/j.addr.2014.11.010] [Citation(s) in RCA: 353] [Impact Index Per Article: 39.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Revised: 09/01/2014] [Accepted: 11/08/2014] [Indexed: 12/15/2022]
Abstract
Peripheral nerve injuries represent a substantial clinical problem with insufficient or unsatisfactory treatment options. This review summarises all the events occurring after nerve damage at the level of the cell body, the site of injury and the target organ. Various experimental strategies to improve neuronal survival, axonal regeneration and target reinnervation are described including pharmacological approaches and cell-based therapies. Given the complexity of nerve regeneration, further studies are needed to address the biology of nerve injury, to improve the interaction with implantable scaffolds, and to implement cell-based therapies in nerve tissue engineering.
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35
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Myckatyn TM, Hunter DA, Mackinnon SE. The effects of cold preservation and subimmunosuppressive doses of FK506 on axonal regeneration in murine peripheral nerve isografts. THE CANADIAN JOURNAL OF PLASTIC SURGERY = JOURNAL CANADIEN DE CHIRURGIE PLASTIQUE 2013; 11:15-22. [PMID: 24115844 DOI: 10.1177/229255030301100110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND FK506 is a frequently used immunosuppressant with neuroregenerative effects. The neuroregenerative and immunosuppressive mechanisms of FK506, however, are distinct, suggesting that FK506 may stimulate nerve regeneration at lower doses than are needed to induce immunosuppression. The effects of cold preservation, a technique known to improve axonal regeneration through nerve allografts, are not well studied in nerve isografts and are also reported here. OBJECTIVES To determine the effects of subimmunosuppressive doses of FK506 and cold preservation on nerve regeneration in isografts. METHODS The neuroregenerative properties of immunosuppressive and subimmunosuppressive doses of FK506 were compared in a murine model receiving either fresh or cold preserved nerve isografts. Sixty female BALB/cJ mice were randomized into six groups. Animals in groups I, III and V received fresh nerve isografts. Animals in groups II, IV and VI received cold-preserved nerve isografts. Mice in groups I and II received no medical therapy, while those in groups III and IV received subimmunosuppressive doses of FK506, and those in groups V and VI received immunosuppressive doses as confirmed by mixed lymphocyte reactivity assays. Nerve regeneration was evaluated with histomorphometry and functional recovery was evaluated with walking track analysis. RESULTS Pretreatment with cold preservation did not significantly affect neural regeneration. The potent neuroregenerative effect of immunosuppressive doses of FK506 was confirmed, and the ability of subimmunosuppressive doses of FK506 to stimulate axonal regeneration in murine nerve isografts is reported. CONCLUSIONS Less toxic subimmunosuppressive doses of FK506 retaining some neuroregenerative properties may have a clinical role in treating extensive nerve injuries.
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Affiliation(s)
- Terence M Myckatyn
- Division of Plastic and Reconstructive Surgery, Washington University School of Medicine, St Louis, Missouri, USA
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36
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Effect of local administration of insulin-like growth factor I combined with inside-out artery graft on peripheral nerve regeneration. Injury 2013; 44:1295-301. [PMID: 23747124 DOI: 10.1016/j.injury.2013.04.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 04/09/2013] [Accepted: 04/14/2013] [Indexed: 02/02/2023]
Abstract
The objective was to assess the effect of topically administered insulin-like growth factor (IGF I) on peripheral nerve regeneration and functional recovery. Eighty male healthy white Wistar rats were divided into four experimental groups (n=20), randomly: in transected group (TC), the left sciatic nerve was transected and stumps were fixed in the adjacent muscle. In treatment group, defect was bridged using an inside-out artery graft (IOAG/IGF) filled with 10 μL IGF I (100 ng/kg). In artery graft group (IOAG), the graft was filled with phosphate-buffered saline alone. In sham-operated group (SHAM), sciatic nerve was exposed and manipulated. Each group was subdivided into five subgroups of five animals each and regenerated nerve fibres were studied 4, 8, 12 and 16 weeks after surgery. Behavioural testing, sciatic nerve functional study, gastrocnemius muscle mass and morphometric indices confirmed faster recovery of regenerated axons in IOAG/IGF than IOAG group (P<0.05). In immunohistochemistry, location of reactions to S-100 in IOAG/IGF was clearly more positive than that in IOAG group. When loaded in an artery graft, IGF I accelerated and improved functional recovery and morphometric indices of sciatic nerve.
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Repair of the Peripheral Nerve-Remyelination that Works. Brain Sci 2013; 3:1182-97. [PMID: 24961524 PMCID: PMC4061866 DOI: 10.3390/brainsci3031182] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 07/07/2013] [Accepted: 07/19/2013] [Indexed: 12/15/2022] Open
Abstract
In this review we summarize the events known to occur after an injury in the peripheral nervous system. We have focused on the Schwann cells, as they are the most important cells for the repair process and facilitate axonal outgrowth. The environment created by this cell type is essential for the outcome of the repair process. The review starts with a description of the current state of knowledge about the initial events after injury, followed by Wallerian degeneration, and subsequent regeneration. The importance of surgical repair, carried out as soon as possible to increase the chances of a good outcome, is emphasized throughout the review. The review concludes by describing the target re-innervation, which today is one of the most serious problems for nerve regeneration. It is clear, compiling this data, that even though regeneration of the peripheral nervous system is possible, more research in this area is needed in order to perfect the outcome.
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Kilic A, Ojo B, Rajfer RA, Konopka G, Hagg D, Jang E, Akelina Y, Mao JJ, Rosenwasser MP, Tang P. Effect of white adipose tissue flap and insulin-like growth factor-1 on nerve regeneration in rats. Microsurgery 2013; 33:367-75. [DOI: 10.1002/micr.22101] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 01/26/2013] [Accepted: 01/29/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Ayhan Kilic
- Department of Orthopaedic Surgery; Columbia University; New York NY
| | - Bukola Ojo
- Department of Orthopaedic Surgery; Columbia University; New York NY
| | | | - Geoffrey Konopka
- Department of Orthopaedic Surgery; Columbia University; New York NY
| | - Daniel Hagg
- Tissue Engineering and Regenerative Medicine Laboratory; Columbia University College of Dental Medicine; New York NY
| | - Eugene Jang
- Department of Orthopaedic Surgery; Columbia University; New York NY
| | - Yelena Akelina
- Department of Orthopaedic Surgery; Columbia University; New York NY
| | - Jeremy J. Mao
- Tissue Engineering and Regenerative Medicine Laboratory; Columbia University College of Dental Medicine; New York NY
| | | | - Peter Tang
- Department of Orthopaedic Surgery; Columbia University; New York NY
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Role of Physical Exercise for Improving Posttraumatic Nerve Regeneration. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2013; 109:125-49. [DOI: 10.1016/b978-0-12-420045-6.00006-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Sakowski SA, Feldman EL. Insulin-like growth factors in the peripheral nervous system. Endocrinol Metab Clin North Am 2012; 41:375-93, vii. [PMID: 22682636 DOI: 10.1016/j.ecl.2012.04.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Insulin-like growth factors (IGFs) play an integral role in development, growth, and survival. This article details the current understanding of the effects of IGFs in the peripheral nervous system (PNS) during health and disease, and introduces how the IGF system regulates PNS development and impacts growth and survival of PNS cells. Also discussed are implications of IGF signaling in neurodegeneration and the status and prospects of IGF therapies for PNS conditions. There is substantial support for the application of IGF therapies in the treatment of PNS injury and disease.
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Affiliation(s)
- Stacey A Sakowski
- A. Alfred Taubman Medical Research Institute, University of Michigan, 109 Zina Pitcher Place, 4019 AAT-BSRB, Ann Arbor, MI 48109, USA
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Specificity of peripheral nerve regeneration: interactions at the axon level. Prog Neurobiol 2012; 98:16-37. [PMID: 22609046 DOI: 10.1016/j.pneurobio.2012.05.005] [Citation(s) in RCA: 287] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 04/12/2012] [Accepted: 05/08/2012] [Indexed: 12/13/2022]
Abstract
Peripheral nerves injuries result in paralysis, anesthesia and lack of autonomic control of the affected body areas. After injury, axons distal to the lesion are disconnected from the neuronal body and degenerate, leading to denervation of the peripheral organs. Wallerian degeneration creates a microenvironment distal to the injury site that supports axonal regrowth, while the neuron body changes in phenotype to promote axonal regeneration. The significance of axonal regeneration is to replace the degenerated distal nerve segment, and achieve reinnervation of target organs and restitution of their functions. However, axonal regeneration does not always allows for adequate functional recovery, so that after a peripheral nerve injury, patients do not recover normal motor control and fine sensibility. The lack of specificity of nerve regeneration, in terms of motor and sensory axons regrowth, pathfinding and target reinnervation, is one the main shortcomings for recovery. Key factors for successful axonal regeneration include the intrinsic changes that neurons suffer to switch their transmitter state to a pro-regenerative state and the environment that the axons find distal to the lesion site. The molecular mechanisms implicated in axonal regeneration and pathfinding after injury are complex, and take into account the cross-talk between axons and glial cells, neurotrophic factors, extracellular matrix molecules and their receptors. The aim of this review is to look at those interactions, trying to understand if some of these molecular factors are specific for motor and sensory neuron growth, and provide the basic knowledge for potential strategies to enhance and guide axonal regeneration and reinnervation of adequate target organs.
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Patodia S, Raivich G. Downstream effector molecules in successful peripheral nerve regeneration. Cell Tissue Res 2012; 349:15-26. [PMID: 22580509 DOI: 10.1007/s00441-012-1416-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 03/19/2012] [Indexed: 12/16/2022]
Abstract
The robust axon regeneration that occurs following peripheral nerve injury is driven by transcriptional activation of the regeneration program and by the expression of a wide range of downstream effector molecules from neuropeptides and neurotrophic factors to adhesion molecules and cytoskeletal adaptor proteins. These regeneration-associated effector molecules regulate the actin-tubulin machinery of growth-cones, integrate intracellular signalling and stimulatory and inhibitory signals from the local environment and translate them into axon elongation. In addition to the neuronally derived molecules, an important transcriptional component is found in locally activated Schwann cells and macrophages, which release a number of cytokines, growth factors and neurotrophins that support neuronal survival and axonal regeneration and that might provide directional guidance cues towards appropriate peripheral targets. This review aims to provide a comprehensive up-to-date account of the transcriptional regulation and functional role of these effector molecules and of the information that they can give us with regard to the organisation of the regeneration program.
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Affiliation(s)
- Smriti Patodia
- Centre for Perinatal Brain Protection and Repair, University College London, Chenies Mews 86-96, London, WC1E 6HX, UK
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Chao T, Gupta R. Commentary on Kemp et al. (2011): Dose and duration of nerve growth factor (NGF) administration determine the extent of behavioral recovery following peripheral nerve injury in the rat. Exp Neurol 2011; 234:5-7. [PMID: 22222878 DOI: 10.1016/j.expneurol.2011.12.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 12/15/2011] [Accepted: 12/16/2011] [Indexed: 10/14/2022]
Affiliation(s)
- Tom Chao
- University of California, Irvine, CA, USA
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Tuck E, Cavalli V. Roles of membrane trafficking in nerve repair and regeneration. Commun Integr Biol 2011; 3:209-14. [PMID: 20714395 DOI: 10.4161/cib.3.3.11555] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2010] [Accepted: 02/14/2010] [Indexed: 02/06/2023] Open
Abstract
Successful axonal repair following injury is critical for nerve regeneration and functional recovery. Nerve repair relies on three functionally distinct events involving membrane trafficking. First, axonally transported vesicles accumulate, while others are generated at the cut end to restore a selective barrier to the severed axon. Then, retrograde transport of vesicles along microtubules informs the cell body that damage has occurred in the distal axon. Finally, membrane addition to a newly formed growth cone, or to the axonal membrane is required to promote axonal re-growth and elongation. Yet, how these membrane trafficking events are regulated and what are the identities of the molecules and organelles involved remains largely unknown. Several potential factors have been recently identified. Members of the SNARE machinery appear to regulate fusion of vesicles in a calcium-dependent manner to promote axolemmal resealing. Retrograde transport of endosomes powered by the dynein-dynactin molecular motor complex represents a potential injury-signaling platform. Several classes of secretory and endocytic vesicles may coordinate axonal membrane extension and re-growth. Here we discuss recent advances in understanding the mechanisms of the membrane trafficking involved in nerve repair.
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Affiliation(s)
- Elizabeth Tuck
- Department of Anatomy and Neurobiology; Washington University in St. Louis; St. Louis, MO USA
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Chang YM, Kuo WH, Lai TY, Shih YT, Tsai FJ, Tsai CH, Shu WT, Chen YY, Chen YS, Kuo WW, Huang CY. RSC96 Schwann Cell Proliferation and Survival Induced by Dilong through PI3K/Akt Signaling Mediated by IGF-I. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:216148. [PMID: 20040524 PMCID: PMC3135880 DOI: 10.1093/ecam/nep216] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Accepted: 11/19/2009] [Indexed: 12/31/2022]
Abstract
Schwann cell proliferation is critical for the regeneration of injured nerves. Dilongs are widely used in Chinese herbal medicine to remove stasis and stimulate wound-healing functions. Exactly how this Chinese herbal medicine promotes tissue survival remains unclear. The aim of the present study was to investigate the molecular mechanisms by which Dilong promote neuron regeneration. Our results show that treatment with extract of Dilong induces the phosphorylation of the insulin-like growth factor-I (IGF-I)-mediated phosphatidylinositol 3-kinase/serine-threonine kinase (PI3K/Akt) pathway, and activates protein expression of cell nuclear antigen (PCNA) in a time-dependent manner. Cell cycle analysis showed that G1 transits into the S phase in 12–16 h, and S transits into the G2 phase 20 h after exposure to earthworm extract. Strong expression of cyclin D1, cyclin E and cyclin A occurs in a time-dependent manner. Small interfering RNA (siRNA)-mediated knockdown of PI3K significantly reduced PI3K protein expression levels, resulting in Bcl2 survival factor reduction and a marked blockage of G1 to S transition in proliferating cells. These results demonstrate that Dilong promotes the proliferation and survival of RSC96 cells via IGF-I signaling. The mechanism is mainly dependent on the PI3K protein.
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Affiliation(s)
- Yung-Ming Chang
- Graduate Institute of Chinese Medical Science and Institute of Basic Medical Science, China Medical University, No 91, Hsueh-Shih Road, Taichung 404, Taiwan
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Emel E, Ergün SS, Kotan D, Gürsoy EB, Parman Y, Zengin A, Nurten A. Effects of insulin-like growth factor-I and platelet-rich plasma on sciatic nerve crush injury in a rat model. J Neurosurg 2010; 114:522-8. [PMID: 21029038 DOI: 10.3171/2010.9.jns091928] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECT Local administration of insulin-like growth factor-I (IGF-I) has been shown to increase the rate of axon regeneration in crush-injured and freeze-injured rat sciatic nerves. Local administration of platelet-rich plasma (PRP) has been also shown to have a measurable effect on facial nerve regeneration after transection in a rat model. The objective of the study was to compare the effects of locally administered IGF-I and PRP on the parameters of the Sciatic Function Index (SFI), sensory function (SF), axon count, and myelin thickness/axon diameter ratio (G-ratio) in a rat model of crush-injured sciatic nerves. METHODS The right sciatic nerve of Wistar albino rats (24 animals) was crushed using a Yasargil-Phynox aneurysm clip for 45 minutes. All animals were randomly divided into 3 groups: Group 1 (control group) was treated with saline, Group 2 was treated with IGF-I, and Group 3 was treated with PRP. Injections were performed using the tissue expander's injection port with a connecting tube directed at the crush-injured site. Functional recovery was assessed with improvement in the SFI. Recovery of sensory function was using the pinch test. Histopathological examination was performed 3 months after the injury. RESULTS The SFI showed an improved functional recovery in the IGF-I-treated animals (Group 2) compared with the saline-treated animals (Group 1) 30 days after the injury. In IGF-I-treated rats, sensory function returned to the baseline level significantly faster than in saline-treated and PRP-treated rats as shown in values between SF-2 and SF-7. The G-ratios were found to be significantly higher in both experimental groups than in the control group. CONCLUSIONS This study suggests that the application of IGF-I to the crush-injured site may expedite the functional recovery of paralyzed muscle by increasing the rate of axon regeneration.
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Affiliation(s)
- Erhan Emel
- Department of Neurosurgery, Vakif Gureba Hospital, Istanbul, Turkey
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Apel PJ, Ma J, Callahan M, Northam CN, Alton TB, Sonntag WE, Li Z. Effect of locally delivered IGF-1 on nerve regeneration during aging: an experimental study in rats. Muscle Nerve 2010; 41:335-41. [PMID: 19802878 DOI: 10.1002/mus.21485] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Age is an important predictor of neuromuscular recovery after peripheral nerve injury. Insulin-like growth factor 1 (IGF-1) is a potent neurotrophic factor that is known to decline with increasing age. The purpose of this study was to determine if locally delivered IGF-1 would improve nerve regeneration and neuromuscular recovery in aged animals. Young and aged rats underwent nerve transection and repair with either saline or IGF-1 continuously delivered to the site of the nerve repair. After 3 months, nerve regeneration and neuromuscular junction morphology were assessed. In both young and aged animals, IGF-1 significantly improved axon number, diameter, and density. IGF-1 also significantly increased myelination and Schwann cell activity and preserved the morphology of the postsynaptic neuromuscular junction (NMJ). These results show that aged regenerating nerve is sensitive to IGF-1 treatment.
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Affiliation(s)
- Peter J Apel
- Department of Orthopaedic Surgery, Wake Forest University Baptist Medical Center, Medical Center Boulevard, Winston-Salem, North Carolina 27157, USA
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Kiryakova S, Söhnchen J, Grosheva M, Schuetz U, Marinova T, Dzhupanova R, Sinis N, Hübbers CU, Skouras E, Ankerne J, Fries JWU, Irintchev A, Dunlop SA, Angelov DN. Recovery of whisking function promoted by manual stimulation of the vibrissal muscles after facial nerve injury requires insulin-like growth factor 1 (IGF-1). Exp Neurol 2010; 222:226-34. [PMID: 20067789 DOI: 10.1016/j.expneurol.2009.12.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Accepted: 12/30/2009] [Indexed: 01/04/2023]
Abstract
Recently, we showed that manual stimulation (MS) of denervated vibrissal muscles enhanced functional recovery following facial nerve cut and suture (FFA) by reducing poly-innervation at the neuro-muscular junctions (NMJ). Although the cellular correlates of poly-innervation are established, with terminal Schwann cells (TSC) processes attracting axon sprouts to "bridge" adjacent NMJ, molecular correlates are poorly understood. Since quantitative RT-PCR revealed a rapid increase of IGF-1 mRNA in denervated muscles, we examined the effect of daily MS for 2 months after FFA in IGF-1(+/-) heterozygous mice; controls were wild-type (WT) littermates including intact animals. We quantified vibrissal motor performance and the percentage of NMJ bridged by S100-positive TSC. There were no differences between intact WT and IGF-1(+/-) mice for vibrissal whisking amplitude (48 degrees and 49 degrees ) or the percentage of bridged NMJ (0%). After FFA and handling alone (i.e. no MS) in WT animals, vibrissal whisking amplitude was reduced (60% lower than intact) and the percentage of bridged NMJ increased (42% more than intact). MS improved both the amplitude of vibrissal whisking (not significantly different from intact) and the percentage of bridged NMJ (12% more than intact). After FFA and handling in IGF-1(+/-) mice, the pattern was similar (whisking amplitude 57% lower than intact; proportion of bridged NMJ 42% more than intact). However, MS did not improve outcome (whisking amplitude 47% lower than intact; proportion of bridged NMJ 40% more than intact). We conclude that IGF-I is required to mediate the effects of MS on target muscle reinnervation and recovery of whisking function.
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Affiliation(s)
- S Kiryakova
- Department of Anatomy I, University of Cologne, D-50924 Cologne, Germany
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Neville CM, Huang AY, Shyu JY, Snyder EY, Hadlock TA, Sundback CA. Neural Precursor Cell Lines Promote Neurite Branching. Int J Neurosci 2009; 119:15-39. [DOI: 10.1080/00207450802480218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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50
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Basics and Current Approaches to Tissue Engineering in Peripheral Nerve Reconstruction. ACTA ACUST UNITED AC 2009. [DOI: 10.1097/wnq.0b013e3181a361c6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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