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Rahimian S, Najafi H, Webber CA, Jalali H. Advances in Exosome-Based Therapies for the Repair of Peripheral Nerve Injuries. Neurochem Res 2024:10.1007/s11064-024-04157-1. [PMID: 38807021 DOI: 10.1007/s11064-024-04157-1] [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: 11/16/2023] [Revised: 03/07/2024] [Accepted: 05/17/2024] [Indexed: 05/30/2024]
Abstract
Peripheral nerve injuries (PNIs) are the term used to describe injuries that occur to the nerve fibers of the peripheral nervous system (PNS). Such injuries may be caused by trauma, infection, or aberrant immunological response. Although the peripheral nervous system has a limited capacity for self-repair, in cases of severe damage, this process is either interrupted entirely or is only partially completed. The evaluation of variables that promote the repair of peripheral nerves has consistently been a focal point. Exosomes are a subtype of extracellular vesicles that originate from cellular sources and possess abundant proteins, lipids, and nucleic acids, play a critical role in facilitating intercellular communication. Due to their modifiable composition, they possess exceptional capabilities as carriers for therapeutic compounds, including but not limited to mRNAs or microRNAs. Exosome-based therapies have gained significant attention in the treatment of several nervous system diseases due to their advantageous properties, such as low toxicity, high stability, and limited immune system activation. The objective of this review article is to provide an overview of exosome-based treatments that have been developed in recent years for a range of PNIs, including nerve trauma, diabetic neuropathy, amyotrophic lateral sclerosis (ALS), glaucoma, and Guillain-Barre syndrome (GBS). It was concluded that exosomes could provide favorable results in the improvement of peripheral PNIs by facilitating the transfer of regenerative factors. The development of bioengineered exosome therapy for PNIs should be given more attention to enhance the efficacy of exosome treatment for PNIs.
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Affiliation(s)
- Sana Rahimian
- Division of Nanobiotehnology, Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Hossein Najafi
- Division of Nanobiotehnology, Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Christine A Webber
- Division of Anatomy, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Hanieh Jalali
- Division of Cell and Developmental Biology, Department of Animal Biology, Faculty of Biological Sciences, Kharazmi University, No. 43, South Moffateh Ave, Tehran, 15719-14911, Iran.
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Iwabuchi S, Hara Y, Yoshii Y, Ikumi A, Mishima H, Yamazaki M. A favorable suture method for size-mismatched nerve transfer: comparison with standard perineural suture in an experimental rat study. J Orthop Surg Res 2023; 18:664. [PMID: 37674224 PMCID: PMC10483853 DOI: 10.1186/s13018-023-04123-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 08/22/2023] [Indexed: 09/08/2023] Open
Abstract
BACKGROUND In nerve transfer for peripheral nerve injury, it is sometimes necessary to suture size-mismatched nerves. In 1993, a favorable suture method called the Ochiai suture method for size-mismatched nerve transfer was reported. However, there is currently a lack of substantial evidence beyond the original report. Therefore, this study aimed to verify the advantages of using the Ochiai suture method for size-mismatched nerve transfer. METHODS A total of 18 rats were evaluated in this study and randomly divided into two groups. All rats underwent femoral to sciatic nerve transfer. Specifically, group A (n = 10) underwent the Ochiai suture method, while group B (n = 8) underwent the perineural suture method. After 12 weeks postoperatively, we conducted the sciatic functional index (SFI) test, measured muscle wet-weight, and performed histological evaluations. All data were compared between the two groups, with Welch's t test for normally distributed data and Mann-Whitney's U test for non-normally distributed data. Statistical significance was set at p < 0.05. RESULTS The mean number of axons was significantly greater in group A than in group B at 5 mm distal to the stump (p = 0.04). Additionally, the average axonal diameter was significantly greater in group A than in group B at 5 mm and 10 mm distal to the stump (p < 0.01 and p < 0.01, respectively). However, the SFI test and measured muscle wet-weight values showed no significant differences between the two groups. CONCLUSIONS Our study revealed that the Ochiai suture method for size-mismatched nerve transfer in rats increases the regenerative axon numbers and diameters. These findings suggest that the Ochiai suture method could be a valuable approach for achieving effective motor function restoration in cases of size-mismatched nerve transfer.
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Affiliation(s)
- Sho Iwabuchi
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yuki Hara
- Department of Orthopaedic Surgery, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Yuichi Yoshii
- Department of Orthopaedic Surgery, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuo, Ami, Inashiki, Ibaraki, 300-0395, Japan.
| | - Akira Ikumi
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hajime Mishima
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Masashi Yamazaki
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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Kawai H, Ito A, Kawaguchi A, Nagai-Tanima M, Nakahara R, Xu S, Kuroki H. Ultrasound therapy for a week promotes regeneration and reduces pro-inflammatory macrophages in a rat sciatic nerve autograft model. Sci Rep 2023; 13:11494. [PMID: 37460651 DOI: 10.1038/s41598-023-38630-8] [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: 12/15/2022] [Accepted: 07/12/2023] [Indexed: 07/20/2023] Open
Abstract
Peripheral nerve injury causes long-term motor dysfunction. Ultrasound (US) therapy is expected to accelerate peripheral nerve regeneration. However, its optimal usage and effects on macrophage phenotypes during peripheral nerve regeneration remain unknown. In this study, we investigated the optimal duration of US therapy and its effects on macrophage phenotype. Twenty-seven rats with autologous sciatic nerve grafting were divided into three groups: two received US therapy (1 MHz frequency, intensity of 140 mW/cm2, 20% duty cycle, 5 min/day) for one (US1) or 4 weeks (US4), and one group received sham stimulation. Immunohistochemistry was performed 3 and 7 days after injury in another set of 12 rats. Eight weeks after the injury, the compound muscle action potential amplitude of the gastrocnemius in the US1 and US4 groups was significantly higher than that in the sham group. The toe-spreading test showed functional recovery, whereas the gait pattern during treadmill walking did not recover. There were no significant differences in motor function, histomorphometry, or muscle weight between groups. Immunohistochemistry showed that US therapy decreased the number of pro-inflammatory macrophages seven days after injury. Therefore, US therapy for both one or 4 weeks can similarly promote reinnervation and reduce proinflammatory macrophages in autograft model rats.
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Affiliation(s)
- Hideki Kawai
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Akira Ito
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Asuka Kawaguchi
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Momoko Nagai-Tanima
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ryo Nakahara
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Shixuan Xu
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hiroshi Kuroki
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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Doi A, Oda K, Matsumoto M, Sakoguchi H, Honda M, Ogata Y, Nakano A, Taniguchi M, Fukushima S, Imayoshi K, Nagao K, Toyoda M, Kameyama H, Sonohata M, Shin MC. Whole body vibration accelerates the functional recovery of motor nerve components in sciatic nerve-crush injury model rats. J Exerc Rehabil 2023; 19:149-162. [PMID: 37435594 PMCID: PMC10331141 DOI: 10.12965/jer.2346178.089] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 04/30/2023] [Indexed: 07/13/2023] Open
Abstract
This study aimed to investigate the effect of whole body vibration (WBV) on the sensory and motor nerve components with sciatic nerve injury model rats. Surgery was performed on 21 female Wister rats (6-8 weeks) under intraperitoneal anesthesia. The nerve-crush injuries for the left sciatic nerve were inflicted using a Sugita aneurysm clip. The sciatic nerve model rats were randomly divided into two groups (n=9; control group, n=12; WBV group). The rats in the WBV group walked in the cage with a vibratory stimulus (frequency 50 Hz, 20 min/day, 5 times/wk), while those in the control group walked in the cage without any vibratory stimulus. We used heat stimulation-induced sensory threshold and lumbar magnetic stimulation-induced motor-evoked potentials (MEPs) to measure the sensory and motor nerve components, respectively. Further, morphological measurements, bilateral hind-limb dimension, bilateral gastrocnemius dimension, and weight were evaluated. Consequently, there were no significant differences in the sensory threshold at the injury side between the control and WBV groups. However, at 4 and 6 weeks postoperatively, MEPs latencies in the WBV group were significantly shorter than those in the control group. Furthermore, both sides of the hind-limb dimension at 6 weeks postoperatively, the left side of the gastrocnemius dimension, and both sides of the gastrocnemius weight significantly increased. In conclusion, WBV especially accelerates the functional recovery of motor nerve components in sciatic nerve-crush injury model rats.
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Affiliation(s)
- Atsushi Doi
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
- Division of Health Sciences, Graduate School of Health Sciences, Kumamoto Health Science University, Kumamoto,
Japan
| | - Kyoka Oda
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Masaki Matsumoto
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Honoka Sakoguchi
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Mizuki Honda
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Yuma Ogata
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Asuka Nakano
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Misato Taniguchi
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Shunya Fukushima
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Kyogo Imayoshi
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Kanta Nagao
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Masami Toyoda
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Hiroki Kameyama
- Department of Medical Technology, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
| | - Motoki Sonohata
- Department of Orthopaedic Surgery, Saga Central Hospital, Saga,
Japan
| | - Min-Chul Shin
- Department of Rehabilitation, Faculty of Health, Kumamoto Health Science University, Kumamoto,
Japan
- Division of Health Sciences, Graduate School of Health Sciences, Kumamoto Health Science University, Kumamoto,
Japan
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Lee SY, Kim B, Lee SH, Ju K, Kim SM, Lee JH, Pang K. Biomechanical microenvironmental stimulating effect of pulsed electromagnetic field on the regeneration of crush injured rat sciatic nerve. Biomed Eng Lett 2023; 13:235-243. [PMID: 37124111 PMCID: PMC10130313 DOI: 10.1007/s13534-023-00276-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 03/21/2023] [Accepted: 04/03/2023] [Indexed: 05/02/2023] Open
Abstract
This study evaluated the biomechanical microenvironmental stimulating effect of pulsed electromagnetic field (PEMF) on the regeneration of crush-injured rat sciatic nerve, when combined with bone marrow mesenchymal stem cells (BMSCs) and recombinant human nerve growth factor (rhNGF-β), in the form of an adenoviral vector-mediated NGF. Sprague-Dawley rats were equally distributed into six groups; PBS, BMSC, NGF-Ad + BMSC, PEMF + PBS, PEMF + BMSC and PEMF + NGF-Ad + BMSC. The PBS group received PBS (volume: 10μL/rat), the BMSC group with BMSCs (1 × 106 cell/10 μL/rat) and NGF-Ad group with the rhNGF-β Ad infected BMSCs (1 × 106 cell/10 μL/rat) immediate after right sciatic nerve crush injury. The PEMF groups were exposed to PEMF of 1mT, 50 Hz, 1 h/day. The rats were observed for 3 weeks. PEMF alone did not showed the positive effect compared with negative control group. The groups transplanted with BMSCs showed higher axonal regeneration compared with the groups without transplantation of the cells whether BMSC was infected with NGF-Ad or not and whether the animals received PEMF. PEMF + NGF-Ad + BMSC group showed the significantly highest number of axons than the other groups. Functionally, all groups showed marked improvement at 3 weeks postoperatively although the difference was not statistically significant among the groups. PEMF showed the positive effect when combined with BMSC and NGF-ad in aspect of number of axons. Therefore, combining the microenvironment stimulation methods of PEMF and conventional methods such as transplantation of stem cells and growth factor could be considered for the regeneration methods in the nerve damage.
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Affiliation(s)
- Sang-Yoon Lee
- Dental Research Institute, Department of Oral and Maxillofacial Surgery, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Bongju Kim
- Dental Life Science Research Institute, Innovation Research and Support Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Sung-Ho Lee
- Dental Life Science Research Institute, Innovation Research and Support Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Kyungwon Ju
- Dental Life Science Research Institute, Innovation Research and Support Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Soung-Min Kim
- Department of Oral and Maxillofacial Surgery, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Jong-Ho Lee
- Dental Life Science Research Institute, Innovation Research and Support Center for Dental Science, Seoul National University Dental Hospital, Seoul, Republic of Korea
- Oral Oncology Clinic, National Cancer Center, Il-San, Goyang-si, Republic of Korea
| | - KangMi Pang
- Department of Oral and Maxillofacial Surgery, Seoul National University Gwanak Dental Hospital, 1, Gwanak-Ro, Gwanak-Gu, Seoul, 08826 Republic of Korea
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Wang M, Wu S, Wang J, Fan D, Li Z, Tian S, Yao S, Zhang H, Gao H. MiRNA-206 Affects the Recovery of Sciatic Function by Stimulating BDNF Activity through the Down-regulation of Notch3 Expression. JOURNAL OF MUSCULOSKELETAL & NEURONAL INTERACTIONS 2023; 23:109-121. [PMID: 36856106 PMCID: PMC9976182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
OBJECTIVE To investigate the effects and mechanisms of microRNA 206 (miRNA-206) on neurological recovery through Notch receptor 3 (Notch3). METHODS The sciatic functional index (SFI), nerve conduction velocity (NCV), tricipital muscle wet weight (TWW) and cross-sectional area of the muscular fiber, and grip strength of posterior limbs were detected by establishing a model of the sciatic nerve to evaluate the effect of sciatic nerve injury model. miRNA-206 expression in the model was detected by real-time quantitative polymerase chain reaction (qRT-PCR), to regulate the effects of miRNA-206 on the proliferation of gastrocnemius myocytes by Cell Counting Kit-8 (CCK-8). RESULTS SFI of the model established by immediate epineurium suture after sciatic nerve resection was in the range of -150% to -100% and TWW, the average area of gastrocnemius myocytes, the NCV, and the grasping power of the hind limbs in the model were all lower than those in the normal group. And in the model, TWW, the average area of gastrocnemius myocytes, NCV, and grip strength of posterior limbs were lower in the normal group, which verified the successful establishment of the model. CONCLUSION Over-expression of miRNA-206 can down-regulate Notch3 expression, and then stimulate brain-derived neurotrophic factor (BDNF) activity to promote the repair and functional recovery of sciatic nerve injury.
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Affiliation(s)
- Meng Wang
- Post-graduation Education Office, College of General Practice and Continuing Education, Qiqihar Medical University, Qiqihar, China
| | - Shuang Wu
- Ward 5, Department of Orthopedics, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Jun Wang
- Academic Affairs Office, Qiqihar Medical University, Qiqihar, China
| | - Dandan Fan
- Ward 2, Department of Orthopedics, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Zhiyong Li
- Ward 2, Department of Orthopedics, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Shaohua Tian
- Ward 2, Department of Orthopedics, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Sining Yao
- Ward 2, Department of Orthopedics, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Hongyu Zhang
- Ward 2, Department of Orthopedics, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - Hongwei Gao
- Ward 2, Department of Orthopedics, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
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Apaydin AS, Sahin C, Cayli S, Bal E, Bal C, Gökcem Yildiz F, Ayberk G. Levetiracetam treatment in an experimental model of sciatic nerve injury: A randomized controlled trial. Neurol Res 2023; 45:86-96. [PMID: 36373802 DOI: 10.1080/01616412.2022.2143617] [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: 04/11/2022] [Accepted: 10/29/2022] [Indexed: 11/16/2022]
Abstract
AIM This study examined whether levetiracetam contributes to improvements in the axon-nerve damage in an experimental rat model. MATERIALS AND METHODS Forty-eight Wistar albino adult male rats weighing 250-300 gr were randomized into six groups having or not having sciatic nerve damages and receiving different (none, 300 and 600 mg/kg) levetiracetam doses, and control (non-levetiracetam). Functional gait analysis and tissue sample analysis with the aid of light microscopy and hematoxylin-eosin dye were evaluated between the groups. Additionally, scanning electron microscopy (SEM) was used for the detailed examination of sciatic nerves. S-100 (Schwann cell marker) immunoreactivities in sciatic nerve was detected by immunohistochemistry. RESULTS Sciatic functional index of the injured rats receiving 300 mg/kg levetiracetam was -65.59 ± 29.48 and -47.13 ± 21.36 in the 2nd and 6th weeks, respectively (p < 0.001). Also, IMA and TOS levels were significantly higher in the control group compared to those receiving levetiracetam (p = 0.001 and p < 0.001, respectively). The most significant nerve regeneration was in the group injured and treated with LEV 600 mg/kg (p < 0.05). CONCLUSION There was a significant improvement in the sciatic functional index, histopathological findings, and parameters showing tissue oxidant status in rats with sciatic nerve injury receiving levetiracetam treatment. Further investigations should be performed to evaluate the contribution of levetiracetam as a treatment modality in sciatic nerve injuries.
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Affiliation(s)
- Aydin Sinan Apaydin
- Faculty of Medicine Ankara City Hospital Department of Neurosurgery, Yıldırım Beyazıt University, Ankara, Turkey
| | - Cansu Sahin
- CÚRAM-SFI Research Centre for Medical Devices, Department of Physiology, University of Galway, Galway, Ireland
| | - Sevil Cayli
- Faculty of Medicine Ankara City Hospital Department of Histology and Embryology, Yıldırım Beyazıt University, Ankara, Turkey
| | - Ercan Bal
- Faculty of Medicine Ankara City Hospital Department of Neurosurgery, Yıldırım Beyazıt University, Ankara, Turkey
| | - Ceylan Bal
- Faculty of Medicine Ankara City Hospital Department of Biochemistry, Yıldırım Beyazıt University, Ankara, Turkey
| | - Fatma Gökcem Yildiz
- Hacettepe University Faculty of Medicine, Department of Neurology, Ankara, Turkey
| | - Giyas Ayberk
- Faculty of Medicine Ankara City Hospital Department of Neurosurgery, Yıldırım Beyazıt University, Ankara, Turkey
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Michel-Flutot P, Jesus I, Mansart A, Bonay M, Lee KZ, Auré K, Vinit S. Evaluation of Gastrocnemius Motor Evoked Potentials Induced by Trans-Spinal Magnetic Stimulation Following Tibial Nerve Crush in Rats. BIOLOGY 2022; 11:biology11121834. [PMID: 36552344 PMCID: PMC9776027 DOI: 10.3390/biology11121834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Peripheral nerve injuries induce long-lasting physiological and severe functional impairment due to motor, sensory, and autonomic denervation. Preclinical models allow us to study the process of nerve damage, evaluate the capacity of the peripheral nervous system for spontaneous recovery, and test diagnostic tools to assess the damage and subsequent recovery. Methods: In this study on Sprague-Dawley rats, we: (1) compared the use of two different anesthetics (isoflurane and urethane) for the evaluation of motor evoked potentials (MEPs) induced by trans-spinal magnetic stimulation (TSMS) in gastrocnemius and brachioradialis muscles; (2) monitored the evolution of gastrocnemius MEPs by applying paired-pulse stimulation to evaluate the neuromuscular junction activity; and (3) evaluated the MEP amplitude before and after left tibialis nerve crush (up to 7 days post-injury under isoflurane anesthesia). The results showed that muscle MEPs had higher amplitudes under isoflurane anesthesia, as compared with urethane anesthesia in the rats, demonstrating higher motoneuronal excitability under isoflurane anesthesia evaluated by TSMS. Following tibial nerve crush, a significant reduction in gastrocnemius MEP amplitude was observed on the injured side, mainly due to axonal damage from the initial crush. No spontaneous recovery of MEP amplitude in gastrocnemius muscles was observed up to 7 days post-crush; even a nerve section did not induce any variation in residual MEP amplitude, suggesting that the initial crush effectively severed the axonal fibers. These observations were confirmed histologically by a drastic reduction in the remaining myelinated fibers in the crushed tibial nerve. These data demonstrate that TSMS can be reliably used to noninvasively evaluate peripheral nerve function in rats. This method could therefore readily be applied to evaluate nerve conductance in the clinical environment.
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Affiliation(s)
| | - Isley Jesus
- END-ICAP, UVSQ, Inserm, Université Paris-Saclay, 78000 Versailles, France
| | - Arnaud Mansart
- Infection et Inflammation (2I), UVSQ, Inserm, Université Paris-Saclay, 78000 Versailles, France
| | - Marcel Bonay
- END-ICAP, UVSQ, Inserm, Université Paris-Saclay, 78000 Versailles, France
| | - Kun-Ze Lee
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 80424, Taiwan
| | - Karine Auré
- Department of Neurophysiology, Foch Hospital, 75073 Suresnes, France
| | - Stéphane Vinit
- END-ICAP, UVSQ, Inserm, Université Paris-Saclay, 78000 Versailles, France
- Correspondence: ; Tel.: +33-170-429-427
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Zhang Z, Roberson DP, Kotoda M, Boivin B, Bohnslav JP, González-Cano R, Yarmolinsky DA, Turnes BL, Wimalasena NK, Neufeld SQ, Barrett LB, Quintão NLM, Fattori V, Taub DG, Wiltschko AB, Andrews NA, Harvey CD, Datta SR, Woolf CJ. Automated preclinical detection of mechanical pain hypersensitivity and analgesia. Pain 2022; 163:2326-2336. [PMID: 35543646 PMCID: PMC9649838 DOI: 10.1097/j.pain.0000000000002680] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/01/2022] [Accepted: 04/14/2022] [Indexed: 11/26/2022]
Abstract
ABSTRACT The lack of sensitive and robust behavioral assessments of pain in preclinical models has been a major limitation for both pain research and the development of novel analgesics. Here, we demonstrate a novel data acquisition and analysis platform that provides automated, quantitative, and objective measures of naturalistic rodent behavior in an observer-independent and unbiased fashion. The technology records freely behaving mice, in the dark, over extended periods for continuous acquisition of 2 parallel video data streams: (1) near-infrared frustrated total internal reflection for detecting the degree, force, and timing of surface contact and (2) simultaneous ongoing video graphing of whole-body pose. Using machine vision and machine learning, we automatically extract and quantify behavioral features from these data to reveal moment-by-moment changes that capture the internal pain state of rodents in multiple pain models. We show that these voluntary pain-related behaviors are reversible by analgesics and that analgesia can be automatically and objectively differentiated from sedation. Finally, we used this approach to generate a paw luminance ratio measure that is sensitive in capturing dynamic mechanical hypersensitivity over a period and scalable for high-throughput preclinical analgesic efficacy assessment.
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Affiliation(s)
- Zihe Zhang
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - David P. Roberson
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Masakazu Kotoda
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Bruno Boivin
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - James P. Bohnslav
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Rafael González-Cano
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - David A. Yarmolinsky
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Bruna Lenfers Turnes
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Nivanthika K. Wimalasena
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Shay Q. Neufeld
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Lee B. Barrett
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Nara L. M. Quintão
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Victor Fattori
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | - Daniel G. Taub
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | | | - Nick A. Andrews
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
| | | | | | - Clifford J. Woolf
- Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA, United States. D.P. Roberson is now with Blackbox Bio, LLC, Dallas, TX, United States. R. González-Cano is now with the Department of Pharmacology, University of Granada, Granada, Spain. N.K. Wimalasena is now with Decibel Therapeutics, Boston, MA, United States. N.L.M. Quintão is now with the Postgraduate Programe in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil. V. Fattori is now with the Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil. A.B. Wiltschko is now with the Google Research, Brain Team, Cambridge, MA, United States. N.A. Andrews is now with the Salk Institute for Biological Studies, La Jolla, CA, United States
- Department of Neurobiology, Harvard Medical School, Boston, MA, United States
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10
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Hu Y, Zhu Y, Wen X, Zeng F, Feng Y, Xu Z, Xu F, Wang J. Repetitive transcranial magnetic stimulation regulates neuroinflammation, relieves hyperalgesia and reverses despair-like behaviour in chronic constriction injury rats. Eur J Neurosci 2022; 56:4930-4947. [PMID: 35895439 DOI: 10.1111/ejn.15779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 07/08/2022] [Accepted: 07/16/2022] [Indexed: 11/28/2022]
Abstract
Repetitive transcranial magnetic stimulation (rTMS) could effectively relieve the pain and depression in neuropathic pain (NP) patients. However, the specific treatment parameters and exact mechanism are still unclear. Our purpose is to observe the effects of rTMS on pain and despair-like behaviour in chronic constriction injury (CCI) rats and explore its possible mechanism. Thirty-two 8-week-old male Sprague-Dawley rats were randomly divided into four groups: sham operation group (S, n = 8), CCI group (n = 8), 1 Hz-rTMS group (n = 8) and 10 Hz-rTMS group (n = 8). The rTMS was applied to the left dorsal anterior agranular insular (AId) 1 week after the operation, once a day, 5 days/week for 4 consecutive weeks. Mechanical hyperalgesia, despair-like behaviours and sciatic nerve function were used to evaluate the effects of rTMS. Besides, glucose metabolism, the metabotropic glutamate receptors 5 (mGluR5), N-Methyl-D-Aspartic acid receptor type 2B (NMDAR2B), tumour necrosis factor-α (TNF-α), interleukin-6 (Ll-6) and interleukin-1β (Ll-1β) in AId were tested to explore the possible mechanism. Compared with 1 Hz-rTMS, the rats of 10 Hz-rTMS had higher the mechanical hyperalgesia, higher sugar preference and shorter swimming immobility time. Besides, the expressions of mGluR5, NMDAR2B, TNF-α, Ll-1β and Ll-6 both in 1 Hz-rTMS and 10 Hz-rTMS groups were reduced compared with the CCI group; the 10 Hz-rTMS group had a more decrease than that of 1 Hz-rTMS. Furthermore, the [18]F-FDG uptake was lower than that in the 1 Hz-rTMS group. Compared with 1 Hz-rTMS, 10 Hz-rTMS could more effectively relieve mechanical hyperalgesia and reverse despair-like behaviour in rats. The mechanism could be related to regulating mGluR5/NMDAR2B-related inflammatory signalling pathways in the AId.
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Affiliation(s)
- Yue Hu
- Department of Rehabilitation Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yuanliang Zhu
- Department of Rehabilitation Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xin Wen
- Department of Rehabilitation Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Fanshuo Zeng
- Department of Rehabilitation Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yue Feng
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
| | - Zhangyu Xu
- Department of Rehabilitation Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Fangyuan Xu
- Department of Rehabilitation Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Jianxiong Wang
- Department of Rehabilitation Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China.,Laboratory of Neurological Diseases and Brain Function, Luzhou, China
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11
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Arabzadeh E, Reza Rahimi A, Zargani M, Feyz Simorghi Z, Emami S, Sheikhi S, Zaeri Amirani Z, Yousefi P, Sarshin A, Aghaei F, Feizollahi F. Resistance exercise promotes functional test via sciatic nerve regeneration, and muscle atrophy improvement through GAP-43 regulation in animal model of traumatic nerve injuries. Neurosci Lett 2022; 787:136812. [PMID: 35872241 DOI: 10.1016/j.neulet.2022.136812] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 07/12/2022] [Accepted: 07/19/2022] [Indexed: 11/30/2022]
Abstract
Resistance training improves muscle strength through a combination of neural plasticity and muscle hypertrophy. This study aimed to evaluate the effects of resistance exercise on sciatic nerve regeneration and histology, growth-associated protein 43 (GAP-43) expressions, and soleus muscle atrophy following traumatic nerve injuries in Wistar rats. In the present study, 40 male Wistar rats were randomly assigned into four groups: healthy control (HC) as a sham group was exposed to the surgical procedures without any sciatic nerve compression, lesioned control (LC), resistance training (RT,non-lesioned), and lesioned rats+RT (LRT) (n=10 in each). The RT group performed a resistance-training program 5 days/week for 4 weeks. Sciatic functional index (SFI) score, beam score and Basso, Beattie, and Bresnahan (BBB) score decreased and the hot plate time increased significantly in the LC group compared to the HC (p<0.05) group. However, the LRT group showed a significant increase in the SFI score (p=0.001) and a significant decrease in hot plate time (p=0.0232) compared to the LC group. The LC group also showed neurological morphological damage and muscle atrophy and a decrease in GAP-43 in nerve tissue. In comparison to the LC group, a significant increase in sciatic nerve caliber, diameter, number of muscle fibers, and the expression of GAP-43 (p<0.05) was observed in the LRT group. Doing resistance training even for four weeks seems to affect sciatic nerve lesions and injuries. It can also repair and regenerate nerve tissue by upregulating GAP-43 expression, improving motor behavioral tests, and controlling muscle atrophy.
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Affiliation(s)
- Ehsan Arabzadeh
- Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ali Reza Rahimi
- Department of Exercise Physiology, Islamic Azad University, Karaj Branch, Karaj, Alborz, Iran
| | - Mehdi Zargani
- Department of Exercise Physiology, Islamic Azad University, Karaj Branch, Karaj, Alborz, Iran
| | - Zeinab Feyz Simorghi
- Department of Exercise Physiology, Islamic Azad University, Karaj Branch, Karaj, Alborz, Iran
| | - Shaghayegh Emami
- Department of Exercise Physiology, Islamic Azad University, Karaj Branch, Karaj, Alborz, Iran
| | - Sahar Sheikhi
- Department of Exercise Physiology, Islamic Azad University, Karaj Branch, Karaj, Alborz, Iran
| | - Zeinab Zaeri Amirani
- Department of Exercise Physiology, Islamic Azad University, Karaj Branch, Karaj, Alborz, Iran
| | - Parisa Yousefi
- Department of Exercise Physiology, Islamic Azad University, Karaj Branch, Karaj, Alborz, Iran
| | - Amir Sarshin
- Clinical Care and Health Promotion Research Center, Karaj branch, Islamic Azad University, Karaj, Iran
| | - Fariba Aghaei
- Clinical Care and Health Promotion Research Center, Karaj branch, Islamic Azad University, Karaj, Iran
| | - Foad Feizollahi
- Clinical Care and Health Promotion Research Center, Karaj branch, Islamic Azad University, Karaj, Iran.
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12
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Nicolas CF, Corvi JJ, Zheng Y, Park KH, Akelina Y, Engemann A, Strauch RJ. Resorbable Nerve Wraps: Can They Be Overtightened? J Reconstr Microsurg 2022; 38:694-702. [PMID: 35292952 DOI: 10.1055/s-0042-1744274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Nerve wrapping has been advocated to minimize scarring and adhesion following neurorrhaphy or neurolysis. A wrap should provide an enclosure that is snug enough to protect and support the affected nerve without strangulating the nerve. The degree to which resorbable wraps should be ": tightened" around the nerve is largely subjective with scant literature on the subject. The purpose of this study was to evaluate the effects of tightly fitting resorbable nerve wraps around intact rat sciatic nerves. METHODS Twenty-four Sprague-Dawley rats underwent exposure and circumferential measurement of the right sciatic nerve. Porcine-derived extracellular matrix (ECM) wraps were trimmed and sutured to enclose the nerve with a tight (same as that of the nerve, n = 8) or loose (2.5x that of the nerve, n = 8) circumference. Sham-surgery control animals (n = 8) had no wrap treatment. Functional outcome was recorded biweekly by sciatic functional index (SFI) with walking track analysis and electrical stimulation. Animals were sacrificed at 12 weeks for histologic analyses. RESULTS No withdrawal response could be evoked in the tight-wrap group until week 9, while significant improvement in SFI first occurred between weeks 5 and 7. By week 12, the tight-wrap group required 60% more current compared with baseline stimulation to produce a withdrawal response. They recovered 81% of SFI baseline values but also demonstrated significantly greater intraneural collagen content (p < 0.001) and lower axon density (p < 0.05) than in the loose-wrap and sham groups. The loose-wrap group had comparable functional and histologic outcomes to the sham control group. CONCLUSION Resorbable ECM nerve wraps applied tightly around intact rat sciatic nerves caused significant functional impairment and histological changes characteristic of acute nerve compression. Significant but incomplete functional recovery was achieved by the tight-wrap group after 12 weeks, but such recovery may not apply in humans.
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Affiliation(s)
- Celine F Nicolas
- Department of Orthopedic Surgery, Columbia University Irving Medical Center, New York, New York
| | - John J Corvi
- Department of Orthopedic Surgery, Columbia University Irving Medical Center, New York, New York
| | - YuanDian Zheng
- Department of Orthopedic Surgery, Columbia University Irving Medical Center, New York, New York
| | - Katherine H Park
- Department of Orthopedic Surgery, Columbia University Irving Medical Center, New York, New York
| | - Yelena Akelina
- Department of Orthopedic Surgery, Columbia University Irving Medical Center, New York, New York
| | | | - Robert J Strauch
- Department of Orthopedic Surgery, Columbia University Irving Medical Center, New York, New York
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13
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Effect of Botulinum Toxin Injection and Extracorporeal Shock Wave Therapy on Nerve Regeneration in Rats with Experimentally Induced Sciatic Nerve Injury. Toxins (Basel) 2021; 13:toxins13120879. [PMID: 34941716 PMCID: PMC8706895 DOI: 10.3390/toxins13120879] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/15/2021] [Accepted: 12/06/2021] [Indexed: 11/19/2022] Open
Abstract
This study was designed to compare the roles of botulinum neurotoxin A (BoNT/A) and extracorporeal shock wave therapy (ESWT) in promoting the functional recovery and regeneration of injured peripheral nerves. A total of 45 six-week-old rats with sciatic nerve injury were randomly divided into two experimental groups and one control group. The experimental groups received a single session of intranerve BoNT/A or ESWT immediately after a nerve-crushing injury. The control group was not exposed to any treatment. Differentiation of Schwann cells and axonal sprouting were observed through immunofluorescence staining, ELISA, real-time PCR, and Western blot at 3, 6, and 10 weeks post-nerve injury. For clinical assessment, serial sciatic functional index analysis and electrophysiological studies were performed. A higher expression of GFAP and S100β was detected in injured nerves treated with BoNT/A or ESWT. The levels of GAP43, ATF3, and NF200 associated with axonal regeneration in the experimental groups were also significantly higher than in the control group. The motor functional improvement occurred after 7 weeks of clinical observation following BoNT/A and ESWT. Compared with the control group, the amplitude of the compound muscle action potential in the experimental groups was significantly higher from 6 to 10 weeks. Collectively, these findings indicate that BoNT/A and ESWT similarly induced the activation of Schwann cells with the axonal regeneration of and functional improvement in the injured nerve.
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14
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Brogan DM, Dy CJ, Lee TY, Rioux-Forker D, Wever J, Leversedge FJ. Histologic and Functional Outcomes of Conduit Wrapping for Peripheral Nerve Repair: Early Results in a Rat Model. J Reconstr Microsurg 2021; 37:559-565. [PMID: 33517567 DOI: 10.1055/s-0040-1722762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND The concept of utilizing a nerve conduit for augmentation of a primary nerve repair has been advocated as a method to prevent neural scarring and decrease adhesions. Despite clinical use, little is known about the effects of a nerve conduit wrapped around a primary repair. To better understand this, we investigated the histologic and functional effects of use of a nerve conduit wrapped around a rat sciatic nerve repair without tension. METHODS Twenty Lewis' rats were divided into two groups of 10 rats each. In each group, unilateral sciatic nerve transection and repair were performed, with the opposite limb utilized as a matched control. In the first group, direct repair alone was performed; in the second group, this repair was augmented with a porcine submucosa conduit wrapped around the repair site. Sciatic functional index (SFI) was measured at 6 weeks with walking track analysis in both groups. Nonsurvival surgeries were then performed in all animals to harvest both the experimental and control nerves to measure histomorphometric parameters of recovery. Histomorphometric parameters assessed included total number of neurons, nerve fiber density, nerve fiber width, G-ratio, and percentage of debris. Unpaired t-test was used to compare outcomes between the two groups. RESULTS All nerves healed uneventfully but compared with direct repair; conduit usage was associated with greater histologic debris, decreased axonal density, worse G-ratio, and worse SFI. No significant differences were found in total axon count or gastrocnemius weight. CONCLUSION In the absence of segmental defects, conduit wrapping primary nerve repairs seem to be associated with worse functional and mixed histologic outcomes at 6 weeks, possibly due to debris from conduit resorption. While clinical implications are unclear, more basic science and clinical studies should be performed prior to widespread adoption of this practice.
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Affiliation(s)
- David M Brogan
- Department of Orthopedic Surgery, Washington University in St. Louis, St. Louis, Missouri
| | - Christopher J Dy
- Department of Orthopedic Surgery, Washington University in St. Louis, St. Louis, Missouri
| | - Tony Y Lee
- Department of Orthopedic Surgery, Washington University in St. Louis, St. Louis, Missouri
| | - Dana Rioux-Forker
- Division of Plastic Surgery, University of Missouri, Columbia, Missouri
| | - Jason Wever
- Department of Orthopedic Surgery, Washington University in St. Louis, St. Louis, Missouri
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15
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Grafting of iPS cell-derived tenocytes promotes motor function recovery after Achilles tendon rupture. Nat Commun 2021; 12:5012. [PMID: 34408142 PMCID: PMC8373964 DOI: 10.1038/s41467-021-25328-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 08/04/2021] [Indexed: 11/09/2022] Open
Abstract
Tendon self-renewal is a rare occurrence because of the poor vascularization of this tissue; therefore, reconstructive surgery using autologous tendon is often performed in severe injury cases. However, the post-surgery re-injury rate is relatively high, and the collection of autologous tendons leads to muscle weakness, resulting in prolonged rehabilitation. Here, we introduce an induced pluripotent stem cell (iPSC)-based technology to develop a therapeutic option for tendon injury. First, we derived tenocytes from human iPSCs by recapitulating the normal progression of step-wise narrowing fate decisions in vertebrate embryos. We used single-cell RNA sequencing to analyze the developmental trajectory of iPSC-derived tenocytes. We demonstrated that iPSC-tenocyte grafting contributed to motor function recovery after Achilles tendon injury in rats via engraftment and paracrine effects. The biomechanical strength of regenerated tendons was comparable to that of healthy tendons. We suggest that iPSC-tenocytes will provide a therapeutic option for tendon injury.
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16
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Asano T, Tsujii M, Iino T, Odake K, Sudo A. Pathological features of reinnervated skeletal muscles after crush injury of the sciatic nerve in ob/ob mice. Muscle Nerve 2021; 64:365-373. [PMID: 34212392 DOI: 10.1002/mus.27365] [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: 10/16/2020] [Revised: 06/21/2021] [Accepted: 06/27/2021] [Indexed: 11/11/2022]
Abstract
INTRODUCTION/AIMS Obesity is a factor contributing to suboptimal improvement of motor function in peripheral nerve disorders. In this study we aimed to evaluate the skeletal muscles during denervation and reinnervation after nerve crush injury in leptin-deficient (ob/ob) mice. METHODS Experiments were performed on the skeletal muscles of the hindlimbs in 20 male ob/ob mice and controls. Characteristics of the gastrocnemius muscles were evaluated by histological analysis, immunohistological analysis, and Sircol-collagen assay after measurement of body weight and wet weight of the skeletal muscles, and by walking track analysis. The sciatic nerve was denervated by crushing with smooth forceps and reinnervation was evaluated. RESULTS Gastrocnemius wet weight was significantly lower in the ob/ob mice than in the control mice. A smaller cross-sectional area of type II fibers and increase of type I fiber grouping of the skeletal muscles was demonstrated in the ob/ob mice. After nerve injury, motor function recovery was equal between the groups but the cross-sectional area of type II fibers was significantly smaller in the ob/ob mice than in control mice at 4 weeks. The denervated muscles showed an increase in collagen deposition in the interstitial space; predominant in the ob/ob mice after nerve injury. DISCUSSION The results of this study suggest that fibrosis in the skeletal muscle of obese patients after nerve injury is prominent, which may impair improvement of muscle function after treatment of peripheral nerve disorders.
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Affiliation(s)
- Takahiro Asano
- Department of Orthopaedic Surgery, Graduate School of Medicine, Mie University, Tsu, Japan
| | - Masaya Tsujii
- Department of Orthopaedic Surgery, Graduate School of Medicine, Mie University, Tsu, Japan
| | - Takahiro Iino
- Department of Orthopaedic Surgery, Graduate School of Medicine, Mie University, Tsu, Japan
| | - Kazuya Odake
- Department of Orthopaedic Surgery, Graduate School of Medicine, Mie University, Tsu, Japan
| | - Akihiro Sudo
- Department of Orthopaedic Surgery, Graduate School of Medicine, Mie University, Tsu, Japan
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17
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Seto T, Suzuki H, Okazaki T, Imajo Y, Nishida N, Funaba M, Kanchiku T, Taguchi T, Sakai T. Three-dimensional analysis of the characteristics of joint motion and gait pattern in a rodent model following spinal nerve ligation. Biomed Eng Online 2021; 20:55. [PMID: 34090446 PMCID: PMC8180104 DOI: 10.1186/s12938-021-00892-6] [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: 02/03/2021] [Accepted: 05/25/2021] [Indexed: 11/10/2022] Open
Abstract
Background The spinal nerve ligation (SNL) rat is well known as the most common rodent model of neuropathic pain without motor deficit. Researchers have performed analyses using only the von Frey and thermal withdrawal tests to evaluate pain intensity in the rat experimental model. However, these test are completely different from the neurological examinations performed clinically. We think that several behavioral reactions must be observed following SNL because the patients with neuropathic pain usually have impaired coordination of the motions of the right–left limbs and right–left joint motion differences. In this study, we attempted to clarify the pain behavioral reactions in SNL rat model as in patients. We used the Kinema-Tracer system for 3D kinematics gait analysis to identify new characteristic parameters of each joint movement and gait pattern. Results The effect of SNL on mechanical allodynia was a 47 ± 6.1% decrease in the withdrawal threshold during 1–8 weeks post-operation. Sagittal trajectories of the hip, knee and ankle markers in SNL rats showed a large sagittal fluctuation of each joint while walking. Top minus bottom height of the left hip and knee that represents instability during walking was significantly larger in the SNL than sham rats. Both-foot contact time, which is one of the gait characteristics, was significantly longer in the SNL versus sham rats: 1.9 ± 0.15 s vs. 1.03 ± 0.15 s at 4 weeks post-operation (p = 0.003). We also examined the circular phase time to evaluate coordination of the right and left hind-limbs. The ratio of the right/left circular time was 1.0 ± 0.08 in the sham rats and 0.62 ± 0.15 in the SNL rats at 4 weeks post-operation. Conclusions We revealed new quantitative parameters in an SNL rat model that are directly relevant to the neurological symptoms in patients with neuropathic pain, in whom the von Frey and thermal withdrawal tests are not used at all clinically. This new 3D analysis system can contribute to the analysis of pain intensity of SNL rats in detail similar to human patients’ reactions following neuropathic pain. Supplementary Information The online version contains supplementary material available at 10.1186/s12938-021-00892-6.
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Affiliation(s)
- Takayuki Seto
- Department of Orthopaedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hidenori Suzuki
- Department of Orthopaedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan.
| | - Tomoya Okazaki
- Department of Orthopaedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Yasuaki Imajo
- Department of Orthopaedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Norihiro Nishida
- Department of Orthopaedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Masahiro Funaba
- Department of Orthopaedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Tsukasa Kanchiku
- Department of Spine and Spinal Cord Surgery, Yamaguchi Rosai Hospital, Sanyoonoda, Yamaguchi, Japan
| | - Toshihiko Taguchi
- Department of Orthopaedic Surgery, Yamaguchi Rosai Hospital, Sanyoonoda, Yamaguchi, Japan
| | - Takashi Sakai
- Department of Orthopaedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
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18
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Otagiri R, Kawai H, Takatsuka M, Shinyashiki N, Ito A, Ikeguchi R, Aoyama T. Interfacial polarization of in vivo rat sciatic nerve with crush injury studied via broadband dielectric spectroscopy. PLoS One 2021; 16:e0252589. [PMID: 34077459 PMCID: PMC8171940 DOI: 10.1371/journal.pone.0252589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 05/18/2021] [Indexed: 12/02/2022] Open
Abstract
Electrical stimulation is one of the candidates for elongation-driven regeneration of damaged peripheral nerves. Different organs and tissues have an inherent cell structure and size. This leads to variation in the tissue-specific electrical properties of the frequency of interfacial polarization. Although nervous tissues have a membrane potential, the electrical reaction inside these tissues following electrical stimulation from outside remains unexplored. Furthermore, the pathophysiological reaction of an injured nerve is unclear. Here, we investigated the electrical reaction of injured and non-injured rat sciatic nerves via broadband dielectric spectroscopy. Crush injured and non-injured sciatic nerves of six 12-week-old male Lewis rats were used, 6 days after infliction of the injury. Both sides of the nerves (with and without injury) were exposed, and impedance measurements were performed at room temperature (approximately 25°C) at frequencies ranging from 100 mHz to 5.5 MHz and electric potential ranging from 0.100 to 1.00 V. The measured interfacial polarization potentially originated from the polarization by ion transport around nerve membranes at frequencies between 3.2 kHz and 1.6 MHz. The polarization strength of the injured nerves was smaller than that of non-injured nerves. However, the difference in polarization between injured and non-injured nerves might be caused by inflammation and edema. The suitable frequency range of the interfacial polarization can be expected to be critical for electrical stimulation of injured peripheral nerves.
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Affiliation(s)
- Risa Otagiri
- Course of Physics, Graduate School of Science, Tokai University, Hiratsuka City, Kanagawa, Japan
| | - Hideki Kawai
- Department of Physical Therapy, Human Health Sciences, Graduate school of Medicine, Kyoto University, Kyoto City, Kyoto, Japan
| | - Masanobu Takatsuka
- Course of Science and Technology, Graduate School of Science and Technology, Tokai University, Hiratsuka City, Kanagawa, Japan
| | - Naoki Shinyashiki
- Department of Physics, School of Science, Tokai University, Hiratsuka City, Kanagawa, Japan
| | - Akira Ito
- Department of Physical Therapy, Human Health Sciences, Graduate school of Medicine, Kyoto University, Kyoto City, Kyoto, Japan
| | - Ryosuke Ikeguchi
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto City, Kyoto, Japan
| | - Tomoki Aoyama
- Department of Physical Therapy, Human Health Sciences, Graduate school of Medicine, Kyoto University, Kyoto City, Kyoto, Japan
- * E-mail:
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19
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Wang T, Ito A, Xu S, Kawai H, Kuroki H, Aoyama T. Low-Intensity Pulsed Ultrasound Prompts Both Functional and Histologic Improvements While Upregulating the Brain-Derived Neurotrophic Factor Expression after Sciatic Crush Injury in Rats. ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:1586-1595. [PMID: 33745752 DOI: 10.1016/j.ultrasmedbio.2021.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 01/22/2021] [Accepted: 02/15/2021] [Indexed: 06/12/2023]
Abstract
The aim of this study was to determine that low-intensity pulsed ultrasound (LIPUS) at an intensity of 140 mW/cm2 promotes functional and histologic improvements in sciatic nerve crush injury in a rat model and to investigate changes over time in relevant growth factors and receptors, exploring the mechanism of LIPUS in the recovery process after injury. Toe angle in the toe-off phase, regenerative axonal length, myelinated nerve fiber density, diameter of myelinated nerve fiber, axon diameter and myelin sheath thickness were significantly higher in the LIPUS group than in the sham group. Gene and protein expression of brain-derived neurotrophic factor (BDNF) was upregulated in the LIPUS group. In conclusion, LIPUS contributed to rapid functional and histologic improvement and upregulated BDNF expression after sciatic nerve crush injury in rats.
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Affiliation(s)
- Tianshu Wang
- Department of Development and Rehabilitation of Motor Function, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akira Ito
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Shixuan Xu
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hideki Kawai
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Kuroki
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomoki Aoyama
- Department of Development and Rehabilitation of Motor Function, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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20
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Hellenbrand DJ, Haldeman CL, Lee JS, Gableman AG, Dai EK, Ortmann SD, Gotchy JC, Miller KK, Doucas AM, Nowak NC, Murphy WL, Hanna AS. Functional recovery after peripheral nerve injury via sustained growth factor delivery from mineral-coated microparticles. Neural Regen Res 2021; 16:871-877. [PMID: 33229722 PMCID: PMC8178781 DOI: 10.4103/1673-5374.297786] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The gold standard for treating peripheral nerve injuries that have large nerve gaps where the nerves cannot be directly sutured back together because it creates tension on the nerve, is to incorporate an autologous nerve graft. However, even with the incorporation of a nerve graft, generally patients only regain a small portion of function in limbs affected by the injury. Although, there has been some promising results using growth factors to induce more axon growth through the nerve graft, many of these previous therapies are limited in their ability to release growth factors in a sustained manner and tailor them to a desired time frame. The ideal drug delivery platform would deliver growth factors at therapeutic levels for enough time to grow axons the entire length of the nerve graft. We hypothesized that mineral coated microparticles (MCMs) would bind, stabilize and release biologically active glial cell-derived neurotrophic factor (GDNF) and nerve growth factor (NGF) in a sustained manner. Therefore, the objective of this study was to test the ability of MCMs releasing growth factors at the distal end of a 10 mm sciatic nerve graft, to induce axon growth through the nerve graft and restore hind limb function. After sciatic nerve grafting in Lewis rats, the hind limb function was tested weekly by measuring the angle of the ankle at toe lift-off while walking down a track. Twelve weeks after grafting, the grafts were harvested and myelinated axons were analyzed proximal to the graft, in the center of the graft, and distal to the graft. Under physiological conditions in vitro, the MCMs delivered a burst release of NGF and GDNF for 3 days followed by a sustained release for at least 22 days. In vivo, MCMs releasing NGF and GDNF at the distal end of sciatic nerve grafts resulted in significantly more myelinated axons extending distal to the graft when compared to rats that received nerve grafts without growth factor treatment. The rats with nerve grafts incorporated with MCMs releasing NGF and GDNF also showed significant improvement in hind limb function starting at 7 weeks postoperatively and continuing through 12 weeks postoperatively when compared to rats that received nerve grafts without growth factor treatment. In conclusion, MCMs released biologically active NGF and GDNF in a sustained manner, which significantly enhanced axon growth resulting in a significant improvement of hind limb function in rats. The animal experiments were approved by University of Wisconsin-Madison Animal Care and Use Committee (ACUC, protocol# M5958) on January 3, 2018.
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Affiliation(s)
- Daniel J Hellenbrand
- Department of Neurological Surgery; Department of Biomedical Engineering, University of Wisconsin, Madison, WI, USA
| | - Clayton L Haldeman
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Jae-Sung Lee
- Department of Biomedical Engineering; Department of Orthopedics and Rehabilitation University of Wisconsin, Madison, WI, USA
| | - Angela G Gableman
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Elena K Dai
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Stephen D Ortmann
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Jerrod C Gotchy
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Kierra K Miller
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Adrianna M Doucas
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Nicole C Nowak
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - William L Murphy
- Department of Biomedical Engineering; Department of Orthopedics and Rehabilitation University of Wisconsin, Madison, WI, USA
| | - Amgad S Hanna
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
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21
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Jahromi M, Razavi S, Seyedebrahimi R, Reisi P, Kazemi M. Regeneration of Rat Sciatic Nerve Using PLGA Conduit Containing Rat ADSCs with Controlled Release of BDNF and Gold Nanoparticles. J Mol Neurosci 2020; 71:746-760. [PMID: 33029736 DOI: 10.1007/s12031-020-01694-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 08/28/2020] [Indexed: 12/14/2022]
Abstract
Implantation of a nerve guidance conduit (NGC) carrying neuroprotective factors is promising for repairing peripheral nerve injury. Here, we developed a novel strategy for repairing peripheral nerve injury by gold nanoparticles (AuNPs) and brain-derived neurotrophic factor (BDNF)-encapsulated chitosan in laminin-coated nanofiber of Poly(l-lactide-co-glycolide) (PLGA) conduit and transplantation of rat adipose-derived stem cells (r-ADSCs) suspended in alginate. Then, the beneficial effect of AuNPs, BDNF, and r-ADSCs on nerve regeneration was evaluated in rat sciatic nerve transection model. In vivo experiments showed that the combination of AuNPs- and BDNF-encapsulated chitosan nanoparticles in laminin-coated nanofiber of PLGA conduit with r-ADSCs could synergistically facilitate nerve regeneration. Furthermore, the in vivo histology, immunohistochemistry, and behavioral results demonstrated that the AuNPs- and BDNF-encapsulated chitosan nanoparticles in NGC could significantly reinforce the repair performance of r-ADSCs, which may also contribute to the therapeutic outcome of the AuNPs, BDNF, and r-ADSCs strategies. In this study, we found that the combination of AuNPs and BDNF releases in NGC with r-ADSCs may represent a new potential strategy for peripheral nerve regeneration.
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Affiliation(s)
- Maliheh Jahromi
- Department of Anatomical Sciences, School of Medicine, Isfahan University of Medical Sciences, Isfahan, 81744176, Iran
| | - Shahnaz Razavi
- Department of Anatomical Sciences, School of Medicine, Isfahan University of Medical Sciences, Isfahan, 81744176, Iran.
| | - Reihaneh Seyedebrahimi
- Department of Anatomical Sciences, School of Medicine, Isfahan University of Medical Sciences, Isfahan, 81744176, Iran
| | - Parham Reisi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Kazemi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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22
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Ito A, Wang T, Nakahara R, Kawai H, Nishitani K, Aoyama T, Kuroki H. Ultrasound therapy with optimal intensity facilitates peripheral nerve regeneration in rats through suppression of pro-inflammatory and nerve growth inhibitor gene expression. PLoS One 2020; 15:e0234691. [PMID: 32555658 PMCID: PMC7299378 DOI: 10.1371/journal.pone.0234691] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 05/29/2020] [Indexed: 02/07/2023] Open
Abstract
Background Therapeutic ultrasound (US) is a promising physical therapy modality for peripheral nerve regeneration. However, it is necessary to identify the most effective US parameters and clarify the underlying mechanisms before its clinical application. The intensity of US is one of the most important parameters. However, the optimum intensity for the promotion of peripheral nerve regeneration has yet to be determined. Objectives To identify the optimum intensity of US necessary for the promotion of peripheral nerve regeneration after crush injuries in rats and to clarify the underlying mechanisms of US by mRNA expression analysis. Methods We inflicted sciatic nerve crush injuries on adult Lewis rats and performed ultrasound irradiation using 4 different US intensities: 0 (sham stimulation), 30, 140, and 250 mW/cm2 with frequency (5 days/week) and duration (5 min/day). We evaluated peripheral nerve regeneration by quantitative real-time PCR one week after injury. Histomorphometric analyses and motor function analysis were evaluated 3 weeks after injury. Results US stimulation enhanced re-myelination as well as sprouting of axons, especially at an intensity of 140 mW/cm2. mRNA expression revealed that US suppressed the expression of the inflammatory cytokines TNF and IL-6 and the axonal growth inhibitors SEMA3A and GSK3β. Conclusions An intensity of 140 mW/cm2 was optimal to support regeneration of the sciatic nerve after a crush injury in rats by, in part, the suppression of pro-inflammatory and nerve growth inhibitor gene expression.
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Affiliation(s)
- Akira Ito
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tianshu Wang
- Department of Development and Rehabilitation of Motor Function, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryo Nakahara
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hideki Kawai
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kohei Nishitani
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomoki Aoyama
- Department of Development and Rehabilitation of Motor Function, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Kuroki
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- * E-mail:
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23
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Alawadhi E, Chu TH, Midha R. Comparative Behavioral Assessment of Lewis and Nude Rats after Peripheral Nerve Injury. Comp Med 2020; 70:233-238. [PMID: 32384941 DOI: 10.30802/aalas-cm-19-000079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Cell therapy has shown potential in the field of peripheral nerve repair, and research using rodents is a critical and essential step toward clinical development of this approach. Traditionally, most experimental peripheral nerve injuries are conducted in inbred Lewis or outbred Sprague-Dawley strains. However, transplantation of xenogeneic cells such as human-derived cells typically triggers rejection in these animals. An alternative approach is to use immunodeficient animals, such as athymic nude rats. The lack of functional T cells in these animals renders them more accommodating to foreign cells from a different host. Currently, no literature exists regarding sensorimotor behavioral assessment of nude rats after peripheral nerve injury. To this end, we compared the functional recovery during a 6-wk period of behavioral testing of Lewis and nude rats after unilateral sciatic nerve crushing injury. Three sensorimotor behavioral assessments were performed weekly: a ladder rungwalking task to assess slip ratio and cross duration, von Frey nociception testing to determine the paw withdrawal threshold thus monitoring the regaining of sensory function, and sciatic functional index evaluation to monitor the recovery of integrated motor function. Both strains demonstrated significant sensory and motor deficits in the first week after injury, with a slight regain of sensory function, reduced slip ratio, and increased sciatic functional index starting at 2 wk. No significance difference existed between nude and Lewis rats in their recovery courses. We conclude that nude rats are a suitable model for behavioral training and assessment for cell transplantation studies in peripheral nerve injury and repair.
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Affiliation(s)
- Ebrahim Alawadhi
- Hotchkiss Brain Institute, Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Alberta, Canada; Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - Tak- Ho Chu
- Hotchkiss Brain Institute, Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Alberta, Canada; Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - Rajiv Midha
- Hotchkiss Brain Institute, Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Alberta, Canada; Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Alberta, Canada;,
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24
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Li J, Zhang Y, Yang Z, Zhang J, Lin R, Luo D. Salidroside promotes sciatic nerve regeneration following combined application epimysium conduit and Schwann cells in rats. Exp Biol Med (Maywood) 2020; 245:522-531. [PMID: 32053008 DOI: 10.1177/1535370220906541] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Jiaqi Li
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - Yongguang Zhang
- Department of Orthopaedics, 900 Hospital of the Joint Logistics Support Force/Xiamen University Dongfang Hospital, and Fuzong Clinical Medicine College of Fujian Medical University, Fuzhou 350025, China
| | - Zhimin Yang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - Jingxian Zhang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - Ren Lin
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China.,Key Laboratory of Brain Aging and Neurodegenerative Diseases of Fujian Province, Fuzhou 350122, China
| | - Daoshu Luo
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China.,Key Laboratory of Brain Aging and Neurodegenerative Diseases of Fujian Province, Fuzhou 350122, China
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25
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Ito A, Tianshu W, Tajino J. Three-dimensional motion analysis for evaluating motor function in rodents with peripheral nerve injury. Neural Regen Res 2019; 14:2077-2078. [PMID: 31397339 PMCID: PMC6788252 DOI: 10.4103/1673-5374.262581] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Akira Ito
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Wang Tianshu
- Department of Development and Rehabilitation of Motor Function, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Junichi Tajino
- Department of Development and Rehabilitation of Motor Function, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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