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Huang H, Lin Q, Rui X, Huang Y, Wu X, Yang W, Yu Z, He W. Research status of facial nerve repair. Regen Ther 2023; 24:507-514. [PMID: 37841661 PMCID: PMC10570629 DOI: 10.1016/j.reth.2023.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/06/2023] [Accepted: 09/21/2023] [Indexed: 10/17/2023] Open
Abstract
The facial nerve, also known as the seventh cranial nerve, is critical in controlling the movement of the facial muscles. It is responsible for all facial expressions, such as smiling, frowning, and moving the eyebrows. However, damage to this nerve can occur for a variety of reasons, including maxillofacial surgery, trauma, tumors, and infections. Facial nerve injuries can cause severe functional impairment and can lead to different degrees of facial paralysis, significantly affecting the quality of life of patients. Over the past ten years, significant progress has been made in the field of facial nerve repair. Different approaches, including direct suture, autologous nerve grafts, and tissue engineering, have been utilized for the repair of facial nerve injury. This article mainly summarizes the clinical methods and basic research progress of facial nerve repair in the past ten years.
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Affiliation(s)
- Haoyuan Huang
- School of Stomatology, Jinan University, Guangzhou 510632, China
| | - Qiang Lin
- Hospital of stomatology, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
- School of Stomatology, Jinan University, Guangzhou 510632, China
| | - Xi Rui
- Hospital of stomatology, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
- School of Stomatology, Jinan University, Guangzhou 510632, China
| | - Yiman Huang
- Hospital of stomatology, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
- School of Stomatology, Jinan University, Guangzhou 510632, China
| | - Xuanhao Wu
- School of Stomatology, Jinan University, Guangzhou 510632, China
| | - Wenhao Yang
- School of Stomatology, Jinan University, Guangzhou 510632, China
| | - Zhu Yu
- School of Stomatology, Jinan University, Guangzhou 510632, China
| | - Wenpeng He
- Hospital of stomatology, the First Affiliated Hospital of Jinan University, Guangzhou 510630, China
- School of Stomatology, Jinan University, Guangzhou 510632, China
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Charoenlux P, Utoomprurkporn N, Seresirikachorn K. The efficacy of corticosteroid after facial nerve neurorrhaphy: a systematic review and meta-analysis of randomized controlled trial. Braz J Otorhinolaryngol 2021; 89:79-89. [PMID: 34815200 PMCID: PMC9874359 DOI: 10.1016/j.bjorl.2021.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/26/2021] [Indexed: 01/28/2023] Open
Abstract
OBJECTIVES The benefit of corticosteroids following facial nerve neurorrhaphy in the setting of complete transection is questionable. This systematic review and meta-analysis aimed to evaluate corticosteroid efficacy on facial nerve regeneration and functional recovery after complete disruption and neurorrhaphy. METHODS Randomized controlled trials on both human and animal models from Ovid MEDLINE and Ovid EMBASE studying corticosteroid efficacy in complete facial nerve disruption followed by neurorrhaphy were included. Data were extracted and pooled for meta-analysis. The outcomes were evaluated from electrophysiology, histology, and functional recovery. However, no randomized controlled trial in human was performed. Possibly, performing human trials with histopathology may not be feasible in clinical setting. RESULTS Six animal studies (248 participants) met inclusion criteria. Electrophysiologic outcomes revealed no differences in latency (Standardized Mean Difference (SMD) = -1.97, 95% CI -7.38 to 3.44, p = 0.47) and amplitude (SMD = 0.37, 95% CI -0.44 to 1.18, p = 0.37) between systemic corticosteroids and controls. When analysis compared topical corticosteroid and control, the results provided no differences in latency (Mean Difference (MD) = 0.10, 95% CI -0.04 to 0.24, p = 0.16) and amplitude (SMD = 0.01, 95% CI -0.08 to 0.10, p = 0.81). In histologic outcomes, the results showed no differences in axon diameter (MD = 0.13, 95% CI -0.15 to 0.41, p = 0.37) between systemic corticosteroid and control; however, the result in myelin thickness (MD = 0.06, 95% CI 0.04 to 0.08, p < 0.05) favored control group. When comparing systemic corticosteroid with control in eye blinking, the results favored control (MD = 1.33, 95% CI 0.60 to 2.06, p = 0.0004). CONCLUSIONS This evidence did not show potential benefits of systemic or topical corticosteroid deliveries after facial nerve neurorrhaphy in complete transection when evaluating electrophysiologic, histologic, and functional recovery outcomes in animal models.
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Affiliation(s)
- Prapitphan Charoenlux
- Department of Otolaryngology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Nattawan Utoomprurkporn
- Department of Otolaryngology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand,UCL Ear Institute, Faculty of Brain Science, University College London, London, United Kingdom
| | - Kachorn Seresirikachorn
- Department of Otolaryngology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand,Endoscopic Nasal and Sinus Surgery Excellence Center, King Chulalongkorn Memorial Hospital, Bangkok, Thailand,Corresponding author.
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Şahin MM, Cayonu M, Dinc SK, Ozkocer E, Ilhan M, Uzunoğlu E, Elmas C, Yılmaz M, Akkol E. Effects of chitosan and platelet-rich plasma on facial nerve regeneration in an animal model. Eur Arch Otorhinolaryngol 2021; 279:987-994. [PMID: 33956207 DOI: 10.1007/s00405-021-06859-6] [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: 04/11/2021] [Accepted: 04/28/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE There is still no widely-accepted local agent proven to be effective in nerve regeneration. We aimed to investigate the effects of chitosan gel and platelet-rich plasma MATERIALS AND METHODS: Electrophysiological measurements were performed before and immediately after injury. The injured nerves were covered with spongostan impregnated with the following agents: Group 1 (Control Group): Saline at a dose of 50 µl; Group 2: Chitosan (CHT) at a dose of 50 µl; Group 3: PRP at a dose of 50 ml; and Group 4: a solution of CHT with PRP (1:1). The final measurements were performed after 3 weeks and the injured nerve of each rat was removed. RESULTS There were statistically-significant differences between the groups regarding the measurements of the after-treatment values of stimulus threshold (p < 0.05). The best improvement in electrophysiological measurement and histopathological evaluation was found in Group 4 (CHT-PRP). CONCLUSION Chitosan gel has a positive effect on nerve healing and applying it along with PRP can enhance the effect of chitosan.
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Affiliation(s)
- Muammer Melih Şahin
- Department of Otorhinolaryngology/Head and Neck Surgery, Ankara Gazi University Hospital, Ankara, Turkey.
| | - Melih Cayonu
- Department of Otorhinolaryngology/Head and Neck Surgery, Ankara City Hospital, Ankara, Turkey
| | - Secil Kayalı Dinc
- Department of Otorhinolaryngology/Head and Neck Surgery, Ankara City Hospital, Ankara, Turkey
| | - Esra Ozkocer
- Department of Histology and Embryology, Gazi University School of Medicine, Ankara, Turkey
| | - Mert Ilhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - Eray Uzunoğlu
- Department of Otorhinolaryngology/Head and Neck Surgery, Ankara Gazi University Hospital, Ankara, Turkey
| | - Cigdem Elmas
- Department of Histology and Embryology, Gazi University School of Medicine, Ankara, Turkey
| | - Metin Yılmaz
- Department of Otorhinolaryngology/Head and Neck Surgery, Ankara Gazi University Hospital, Ankara, Turkey
| | - Esra Akkol
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara, Turkey
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Toraman M, Külekçi Öztürk S, Uslu Coşkun B, Güneş P. The effects of 4-aminopyridine and methylprednisolone on recovery of the facial nerve crush injury. Eur Arch Otorhinolaryngol 2020; 278:3057-3063. [PMID: 33226461 DOI: 10.1007/s00405-020-06483-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 11/09/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVE 4-Aminopyridine (4-AP) is a potassium channel blocker that enhances nerve excitability. In this study, rat models that have facial nerve crush injury (FNCI) were grouped and treated with methylprednisolone (MP), 4-AP, and a combination of these two drugs. Electrophysiologic and histopathologic outcomes of these groups will be compared with a control group. MATERIALS AND METHODS Thirty healthy male Wistar rats (mean weight of 265 g) were used in this study. The rats were randomly divided into five groups with six subjects in each: Group 1 (sham group), Group 2 (control group), Group 3 (MP group), Group 4 (4-aminopyridine group), and Group 5 (4-AP + MP group). All groups except the sham group underwent crush injury to the right facial nerve. Electrophysiologic and histologic recovery was recorded three weeks postoperatively. RESULTS The 4-AP group and the combined group had a more significant recovery at Nerve Excitability Thresholds (NET) at the end of three weeks. The methylprednisolone group and the control group had a minimal recovery of NET. Histologically, when compared with the control group, the combined group was the only group that had significant recovery at all three of axonal degeneration, axon diameter, and myelin thickness. CONCLUSION In this experimental study, we demonstrated that a combination treatment of 4-AP and MP is more effective in the recovery of peripheric FNCI than in the no-treatment control group and in the 4-AP- or MP-alone groups. Moreover, our results suggested that 4-AP can be a potent alternative to MP in the treatment of the FNCI. LEVEL OF EVIDENCE N/A.
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Affiliation(s)
- Murat Toraman
- Department of Otorhinolaryngology/Head and Neck Surgery, Tunceli State Hospital, Tunceli-Elazığ Street, Tunceli Devlet Hastanesi, 2th Florr, Tunceli, 62000, Turkey. .,Department of Otorhinolaryngology/Head and Neck Surgery, Fatih Sultan Mehmet Education and Research Hospital, Istanbul, Turkey.
| | - Semra Külekçi Öztürk
- Department of Otorhinolaryngology/Head and Neck Surgery, Fatih Sultan Mehmet Education and Research Hospital, Istanbul, Turkey
| | - Berna Uslu Coşkun
- Department of Otorhinolaryngology/Head and Neck Surgery, Fatih Sultan Mehmet Education and Research Hospital, Istanbul, Turkey.,Department of Otorhinolaryngology/Head and Neck Surgery, Şişli Hamidiye Etfal Education and Research Hospital, Istanbul, Turkey
| | - Pembegül Güneş
- Department of Pathology, Haydarpaşa Numune Education and Research Hospital, Istanbul, Turkey
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Bolandghamat S, Behnam-Rassouli M. Recent Findings on the Effects of Pharmacological Agents on the Nerve Regeneration after Peripheral Nerve Injury. Curr Neuropharmacol 2020; 18:1154-1163. [PMID: 32379588 PMCID: PMC7709152 DOI: 10.2174/1570159x18666200507084024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/27/2020] [Accepted: 04/24/2020] [Indexed: 12/22/2022] Open
Abstract
Peripheral nerve injuries (PNIs) are accompanied with neuropathic pain and functional disability. Despite improvements in surgical repair techniques in recent years, the functional recovery is yet unsatisfied. Indeed a successful nerve repair depends not only on the surgical strategy but also on the cellular and molecular mechanisms involved in traumatic nerve injury. In contrast to all strategies suggested for nerve repair, pharmacotherapy is a cheap, accessible and non-invasive treatment that can be used immediately after nerve injury. This study aimed to review the effects of some pharmacological agents on the nerve regeneration after traumatic PNI evaluated by functional, histological and electrophysiological assessments. In addition, some cellular and molecular mechanisms responsible for their therapeutic actions, restricted to neural tissue, are suggested. These findings can not only help to find better strategies for peripheral nerve repair, but also to identify the neuropathic effects of various medications and their mechanisms of action.
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Affiliation(s)
- Samira Bolandghamat
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Iran
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Binnetoglu A, Demir B, Akakin D, Kervancioglu Demirci E, Batman C. Bacterial cellulose tubes as a nerve conduit for repairing complete facial nerve transection in a rat model. Eur Arch Otorhinolaryngol 2019; 277:277-283. [PMID: 31595316 DOI: 10.1007/s00405-019-05637-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 09/05/2019] [Indexed: 12/21/2022]
Abstract
PURPOSE Functionality of the facial nerve is cosmetically important. While many techniques have been investigated, early and effective treatment for traumatic facial nerve paralysis remains challenging. Here, we aim to examine bacterial cellulose (BC) as a new tubularization material for improving facial nerve regeneration. METHODS Our study was performed on 40 female Sprague Dawley rats. Rats were randomly divided into four groups, with 10 rats per group. In all rats, the main trunk of the facial nerve was completely cut 8 mm before the branching point. For repairing the facial nerve, in group 1, the nerve was left to recover spontaneously (control group); in group 2, it was repaired by primary suturing (8.0 Ethilon sutures, Ethicon); in group 3, BC tubes alone were used to aid nerve repair; and in group 4, both BC tubes and primary sutures (8.0 Ethilon sutures) were used. After 10 weeks, the facial nerve regeneration was evaluated by the whisker movement test and electrophysiologically (nerve stimulation threshold and compound muscle action potential). Nerve regeneration was assessed by calculating the number of myelinated nerve fibers, and by microscopically evaluating the amount of regeneration and fibrosis. RESULTS No significant difference was observed among the groups in terms of whisker movement and electrophysiological parameters (P > 0.05). We found that the numbers of regenerating myelinated fibers were significantly increased (P < 0.05) when BC tubes were used as a nerve conduit. CONCLUSIONS BC can be easily shaped into a hollow tube that guides nerve axons, resulting in better nerve regeneration after transection.
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Affiliation(s)
- Adem Binnetoglu
- Department of Otorhinolaryngology-Head and Neck Surgery, St. Elizabeth's Medical Center, Tufts University School of Medicine, Boston, MA, 02135, USA.
| | - Berat Demir
- Department of Otorhinolaryngology-Head and Neck Surgery, Pendik Training and Research Hospital, Marmara University Medical Faculty, Istanbul, Turkey
| | - Dilek Akakin
- Department of Histology and Embryology, Marmara University Medical Faculty, Istanbul, Turkey
| | - Elif Kervancioglu Demirci
- Department of Histology and Embryology, Istanbul University Istanbul Medical Faculty, Istanbul, Turkey
| | - Caglar Batman
- Department of Otorhinolaryngology-Head and Neck Surgery, Pendik Training and Research Hospital, Marmara University Medical Faculty, Istanbul, Turkey
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Abstract
Currently, there are no established adjuvant drugs for the acceleration of peripheral nerve regeneration. In this paper, we reviewed the literature from the last 10 years and described the drugs proved to accelerate the functional and histological regeneration of the peripheral nerves, either after trauma or in neuropathy experimental models. The vast majority of the studies were experimental with very few small clinical studies, which indicates the need for prospective randomized studies to identify the best drugs to use as adjuvants for nerve regeneration.
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Affiliation(s)
- Olimpiu Bota
- Department of Plastic and Hand Surgery, University Center of Orthopedics and Trauma Surgery, University Hospital Carl Gustav Carus , Dresden , Germany
| | - Lucian Fodor
- Department of Plastic Surgery, First Surgical Clinic, Emergency District Hospital , Cluj-Napoca , Romania
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Tuna Edizer D, Dönmez Z, Gül M, Yiğit Ö, Yiğitcan B, Adatepe T, Uzun N. Effects of Melatonin and Dexamethasone on Facial Nerve Neurorrhaphy. J Int Adv Otol 2018; 15:43-50. [PMID: 30541731 DOI: 10.5152/iao.2018.3273] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES To investigate the effects of topical and systemic administrations of melatonin and dexamethasone on facial nerve regeneration. MATERIALS AND METHODS In total, 50 male albino Wistar rats underwent facial nerve axotomy and neurorrhaphy. The animals were divided into 5 groups: control, topical melatonin, systemic melatonin, topical dexamethasone, and systemic dexamethasone. Nerve conduction studies were performed preoperatively and at 3, 6, 9, and 12 weeks after drug administrations. Amplitude and latency of the compound muscle action potentials were recorded. Coapted facial nerves were investigated under light and electron microscopy. Nerve diameter, axon diameter, and myelin thickness were recorded quantitatively. RESULTS Amplitudes decreased and latencies increased in both the melatonin and dexamethasone groups. At the final examination, the electrophysiological evidence of facial nerve degeneration was not significantly different between the groups. Histopathological examinations revealed the largest nerve diameter in the melatonin groups, followed by the dexamethasone and control groups (p<0.05). Axon diameter of the control group was smaller than those of the melatonin (topical and systemic) and topical dexamethasone groups (p<0.05). The melatonin groups had almost normal myelin ultrastructure. CONCLUSION Electrophysiological evaluation did not reveal any potential benefit of dexamethasone and melatonin in contrast to histopathological examination, which revealed beneficial effects of melatonin in particular. These agents may increase the regeneration of facial nerves, but electrophysiological evidence of regeneration may appear later.
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Affiliation(s)
- Deniz Tuna Edizer
- Department of Otorhinolaryngology, İstanbul Training and Research Hospital, İstanbul, Turkey
| | - Zehra Dönmez
- Department of Otorhinolaryngology, İstanbul Training and Research Hospital, İstanbul, Turkey
| | - Mehmet Gül
- Department of Histology and Embryology, İnönü University School of Medicine, Malatya, Turkey
| | - Özgür Yiğit
- Department of Otorhinolaryngology, İstanbul Training and Research Hospital, İstanbul, Turkey
| | - Birgül Yiğitcan
- Department of Histology and Embryology, İnönü University School of Medicine, Malatya, Turkey
| | - Turgut Adatepe
- Department of Electrophysiology, İstanbul Training and Research Hospital, İstanbul, Turkey
| | - Nurten Uzun
- Department of Neurology, İstanbul University-Cerrahpaşa, Cerrahpaşa School of Medicine, İstanbul, Turkey
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Rivera A, Raymond M, Grobman A, Abouyared M, Angeli SI. The effect of n-acetyl-cysteine on recovery of the facial nerve after crush injury. Laryngoscope Investig Otolaryngol 2017; 2:109-112. [PMID: 28894829 PMCID: PMC5527362 DOI: 10.1002/lio2.68] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 10/31/2016] [Accepted: 01/05/2017] [Indexed: 01/26/2023] Open
Abstract
OBJECTIVE Facial nerve dysfunction can vary in severity and recovery is dependent on the character of the injury. N-acetyl-cysteine prevents oxidative stress and cellular damage, and its use in the setting of nerve dysfunction from crush injury has not yet been established. In this study, rats with facial nerve crush injury will be treated with n-acetyl-cysteine or control and functional recovery and electrophysiologic outcome will be compared. STUDY DESIGN Prospective, randomized animal study. METHODS Twenty-four Wistar rats underwent unilateral facial nerve crush injury. Rats were implanted with a subcutaneous osmotic pump filled with saline (n = 12) or n-acetyl-cysteine 50 mg/kg/day (n = 12). Functional and electromyographic recovery was recorded at two and four weeks postoperatively. RESULTS When compared to untreated rats, n-acetyl-cysteine treated rats had a greater electromyography amplitude recovery at 2 weeks with regard to eye blink (p=0.006) but not vibrissae function. At four weeks, the electromyography amplitude recovery of the vibrissae function was greater in n-acetyl-cysteine treated rats (P=0.001), but the amplitude recovery difference in eye blink was only marginally significant between groups (p=0.07). The functional score was higher in n-acetyl-cysteine-treated rats than in untreated rats at all of the time points. CONCLUSION This study demonstrated that n-acetyl-cysteine facilitated facial nerve recovery with improved functional and electromyography outcomes in the setting of crush injury. LEVEL OF EVIDENCE NA.
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Affiliation(s)
- Andrew Rivera
- Department of OtolaryngologyUniversity of MiamiMiamiFlorida
| | - Mallory Raymond
- Department of OtolaryngologyEmory UniversityAtlantaGeorgiaU.S.A
| | - Ariel Grobman
- Department of OtolaryngologyUniversity of MiamiMiamiFlorida
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Benga A, Zor F, Korkmaz A, Marinescu B, Gorantla V. The neurochemistry of peripheral nerve regeneration. Indian J Plast Surg 2017; 50:5-15. [PMID: 28615804 PMCID: PMC5469235 DOI: 10.4103/ijps.ijps_14_17] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Peripheral nerve injuries (PNIs) can be most disabling, resulting in the loss of sensitivity, motor function and autonomic control in the involved anatomical segment. Although injured peripheral nerves are capable of regeneration, sub-optimal recovery of function is seen even with the best reconstruction. Distal axonal degeneration is an unavoidable consequence of PNI. There are currently few strategies aimed to maintain the distal pathway and/or target fidelity during regeneration across the zone of injury. The current state of the art approaches have been focussed on the site of nerve injury and not on their distal muscular targets or representative proximal cell bodies or central cortical regions. This is a comprehensive literature review of the neurochemistry of peripheral nerve regeneration and a state of the art analysis of experimental compounds (inorganic and organic agents) with demonstrated neurotherapeutic efficacy in improving cell body and neuron survival, reducing scar formation and maximising overall nerve regeneration.
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Affiliation(s)
- Andreea Benga
- Department of Plastic Surgery, Dr. Carol Davila Central Military Emergency University Hospital, Bucharest, Romania
| | - Fatih Zor
- Department of Plastic and Reconstructive Surgery, School of Medicine, Gülhane Military Medical Academy, Ankara, Turkey
| | - Ahmet Korkmaz
- Department of Physiology, School of Medicine, Gülhane Military Medical Academy, Ankara, Turkey
| | - Bogdan Marinescu
- Department of Plastic Surgery, Dr. Carol Davila Central Military Emergency University Hospital, Bucharest, Romania
| | - Vijay Gorantla
- Department of Plastic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
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Sereflican M, Yurttas V, Ozyalvacli G, Terzi EH, Turkoglu SA, Yildiz S, Ilgaz Y, Seyhan S, Oral M, Dagli M. The histopathological and electrophysiological effects of thymoquinone and methylprednisolone in a rabbit traumatic facial nerve paralysis model. Am J Otolaryngol 2016; 37:407-15. [PMID: 27311344 DOI: 10.1016/j.amjoto.2016.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/12/2016] [Accepted: 05/16/2016] [Indexed: 01/26/2023]
Abstract
OBJECTIVE We aimed to determine the effects of methylprednisolone and thymoquinone on nerve healing in a traumatic facial nerve paralysis animal model. SUBJECTS AND METHODS Twenty-four rabbits were randomly divided into 4 groups: group I: control group received no medication and no trauma; group II: sham group received no medication after facial nerve trauma group III: 5mg/kg/day thymoquinone administered; group IV: 1mg/kg/day methylprednisolone administered. An initial electrophysiological assessment was performed in all the animals. The buccal branch of the facial nerve was then clipped to form a traumatic facial paralysis model. The drugs were administered for two weeks once a day. At the end of the second month, the electrophysiological assessments were performed and the distal part of the traumatic facial nerve were dissected and examined under light microscopy. RESULTS Best nerve regeneration was observed in the control and the thymoquinone groups, respectively, whereas the weakest regeneration was determined in the sham group. Thymoquinone and methylprednisolone significantly increased nerve recovery, as measured by histopathological scores and electrophysiological assessment. In the thymoquinone group, due to postoperative amplitude, axon diameter and thickness of myelin sheath values were significantly further increased nerve regeneration compared to that of the methylprednisolone group and these values were close to those of the values of the control group. CONCLUSION Thymoquinone was slightly better than methylprednisolone for functional nerve recovery. The neuroprotective effect of thymoquinone was attributed to its antioxidant and anti-inflammatory effects. Thymoquinone can have a new treatment option to ameliorate the nerve injury.
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Affiliation(s)
- Murat Sereflican
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey.
| | - Veysel Yurttas
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Gulzade Ozyalvacli
- Department of Pathology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Elcin Hakan Terzi
- Department of Medical Histology and Embryology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Sule Aydin Turkoglu
- Department of Neurology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Serpil Yildiz
- Department of Neurology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Yasin Ilgaz
- Department of Medical Histology and Embryology, Gulhane Military Medical Academy, Ankara, Turkey
| | - Sinan Seyhan
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Mesut Oral
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Muharrem Dagli
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
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The Effect of Methylprednisolone on Facial Nerve Paralysis With Different Etiologies. J Craniofac Surg 2015; 26:810-5. [DOI: 10.1097/scs.0000000000001502] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Montava M, Garcia S, Mancini J, Jammes Y, Courageot J, Lavieille JP, Feron F. Vitamin D3 potentiates myelination and recovery after facial nerve injury. Eur Arch Otorhinolaryngol 2014; 272:2815-23. [DOI: 10.1007/s00405-014-3305-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 09/20/2014] [Indexed: 11/29/2022]
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14
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Chang HM, Liu CH, Hsu WM, Chen LY, Wang HP, Wu TH, Chen KY, Ho WH, Liao WC. Proliferative effects of melatonin on Schwann cells: implication for nerve regeneration following peripheral nerve injury. J Pineal Res 2014; 56:322-32. [PMID: 24499296 DOI: 10.1111/jpi.12125] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 01/31/2014] [Indexed: 01/09/2023]
Abstract
Activation of proliferation of Schwann cells is crucial for axonal guidance and successful nerve regeneration following peripheral nerve injury (PNI). Considering melatonin plays an important role in proliferative regulation of central glial cells, the present study determined whether melatonin can effectively promote Schwann cell proliferation and improve nerve regeneration after PNI. The spontaneous immortalized rat Schwann cell line (RSC 96 cells) was first analyzed by quantitative polymerase chain reaction (QPCR) to detect the potential existence of melatonin receptors. The melatonin receptor-mediated signaling responsible for proliferation was examined by measuring the phosphorylation of extracellular signal-regulated kinases (ERK1/2) pathway. The in vivo model of PNI was performed by the end-to-side neurorrhaphy. The quantity of Schwann cells as well as the number of re-innervated motor end plates (MEP) on target muscles was examined to represent the functional recovery of injured nerves. QPCR results indicated that MT1 is the dominant receptor in Schwann cells. Immunoblotting and proliferation assay revealed an enhanced phosphorylation of ERK1/2 and increased number of RSC 96 cells following melatonin administration. Nonselective melatonin receptor antagonist (luzindole) treatment significantly suppressed all the above findings, suggesting that the proliferative effects of melatonin were mediated by a receptor-dependent pathway. In vivo results corresponded well with in vitro findings in which melatonin effectively increased the amount of proliferated Schwann cells and re-innervated MEP on target muscles following PNI. As melatonin successfully improves nerve regeneration by promoting Schwann cell proliferation, therapeutic use of melatonin may thus serve as a promising strategy to counteract the PNI-induced neuronal disability.
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Affiliation(s)
- Hung-Ming Chang
- Department of Anatomy, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
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