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Moradikhah F, Farahani M, Shafiee A. Towards the development of sensation-enabled skin substitutes. Biomater Sci 2024. [PMID: 38990154 DOI: 10.1039/d4bm00576g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Recent advances in cell and biofabrication technologies have contributed to the development of complex human organs. In particular, several skin substitutes are being generated using tissue engineering and regenerative medicine (TERM) technologies. However, recent studies mainly focus on the restoration of the dermis and epidermis layers rather than the regeneration of a fully functional innervated skin organ. Innervation is a critical step in functional tissue repair which has been overlooked in the current TERM studies. In the current study, we highlight the importance of sensation in the skin as the largest sensory organ in the human body. In large non-healing skin wounds, the skin sensation is severely diminished or completely lost and ultimately lead to chronic pain and wound healing process interruption. Current therapeutics for restoring skin sensation after trauma are limited. Recent regenerative medicine-based studies could successfully induce neural networks in skin substitutes, but the effectiveness of these technologies in enhancing sensory capability needs further investigation.
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Affiliation(s)
- Farzad Moradikhah
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Mojtaba Farahani
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
- Institute of Biomaterials, University of Tehran & Tehran University of Medical Sciences (IBUTUMS), Tehran, Iran
| | - Abbas Shafiee
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4102, Australia.
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2
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Anita L, Choi MJ, Yin GN, Ock J, Kwon MH, Rho BY, Chung DY, Suh JK, Ryu JK. Photobiomodulation as a Potential Therapy for Erectile Function: A Preclinical Study in a Cavernous Nerve Injury Model. World J Mens Health 2024; 42:42.e48. [PMID: 38772533 DOI: 10.5534/wjmh.230187] [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: 07/06/2023] [Revised: 11/10/2023] [Accepted: 11/19/2023] [Indexed: 05/23/2024] Open
Abstract
PURPOSE To identify the optimal photobiomodulation (PBM) parameters using molecular, histological, and erectile function analysis in cavernous nerve injury. MATERIALS AND METHODS A cavernous nerve injury was induced in 8-week-old C57BL/6J male mice that were subsequently divided randomly into age-matched control groups. Erectile function tests, penile histology, and Western blotting were performed 2 weeks after surgery and PBM treatment. RESULTS The PBM treatment was administered for five consecutive days with a light-emitted diode (LED) device that delivers 660 nm±3% RED light, and near infra-red 830 nm±2% promptly administered following nerve-crushing surgery and achieved a notable restoration of erectile function approximately 90% of the control values. Subsequent in-vitro and ex-vivo analyses revealed the regeneration of neurovascular connections in both the dorsal root ganglion and major pelvic ganglion, characterized by the sprouting of neurites. Furthermore, the expression levels of neurotrophic, survival, and angiogenic factors exhibited a substantial increase across all groups subjected to PBM treatment. CONCLUSIONS The utilization of PBM employing LED with 660 nm, 830 nm, and combination of both these wavelengths, exhibited significant efficacy to restore erectile function in a murine model of cavernous nerve injury. Thus, the PBM emerges as a potent therapeutic modality with notable advantages such as efficacy, noninvasiveness, and non-pharmacological interventions for erectile dysfunction caused by nerve injury.
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Affiliation(s)
- Limanjaya Anita
- Department of Urology and National Research Center for Sexual Medicine, Inha University College of Medicine, Incheon, Korea
| | - Min-Ji Choi
- Department of Urology and National Research Center for Sexual Medicine, Inha University College of Medicine, Incheon, Korea
| | - Guo Nan Yin
- Department of Urology and National Research Center for Sexual Medicine, Inha University College of Medicine, Incheon, Korea
| | - JiYeon Ock
- Department of Urology and National Research Center for Sexual Medicine, Inha University College of Medicine, Incheon, Korea
| | - Mi-Hye Kwon
- Department of Urology and National Research Center for Sexual Medicine, Inha University College of Medicine, Incheon, Korea
| | - Beom Yong Rho
- Department of Urology and National Research Center for Sexual Medicine, Inha University College of Medicine, Incheon, Korea
| | - Doo Yong Chung
- Department of Urology and National Research Center for Sexual Medicine, Inha University College of Medicine, Incheon, Korea
| | - Jun-Kyu Suh
- Department of Urology and National Research Center for Sexual Medicine, Inha University College of Medicine, Incheon, Korea.
| | - Ji-Kan Ryu
- Department of Urology and National Research Center for Sexual Medicine, Inha University College of Medicine, Incheon, Korea.
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3
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Zhang Y, Zhao X, Ge D, Huang Y, Yao Q. The impact and mechanism of nerve injury on bone metabolism. Biochem Biophys Res Commun 2024; 704:149699. [PMID: 38412668 DOI: 10.1016/j.bbrc.2024.149699] [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: 11/19/2023] [Revised: 01/30/2024] [Accepted: 02/15/2024] [Indexed: 02/29/2024]
Abstract
With an increasing understanding of the mechanisms of fracture healing, it has been found that nerve injury plays a crucial role in the process, but the specific mechanism is yet to be completely revealed. To address this issue and provide novel insights for fracture treatment, we compiled this review. This review aims to study the impact of nerve injury on fracture healing, exploring the role of neurotrophic factors in the healing process. We first revisited the effects of the central nervous system (CNS) and the peripheral nervous system (PNS) on the skeletal system, and further explained the phenomenon of significantly accelerated fracture healing under nerve injury conditions. Then, from the perspective of neurotrophic factors, we delved into the physiological functions and mechanisms of neurotrophic factors, such as nerve growth factor (NGF), Neuropeptides (NPs), and Brain-derived neurotrophic factor (BDNF), in bone metabolism. These effects include direct actions on bone cells, improvement of local blood supply, regulation of bone growth factors, control of cellular signaling pathways, promotion of callus formation and bone regeneration, and synergistic or antagonistic effects with other endocrine factors, such as Sema3A and Transforming Growth Factor β (TGF-β). Finally, we discussed the treatments of fractures with nerve injuries and the future research directions in this review, suggesting that the relationship between nerve injury and fracture healing, as well as the role of nerve injury in other skeletal diseases.
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Affiliation(s)
- Yongqiang Zhang
- Department of Orthopedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Key Lab of Additive Manufacturing Technology, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China; Research Center of Digital Medicine and 3D Printing Technology of Jiangsu Province, Nanjing, China
| | - Xiao Zhao
- Department of Orthopedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Key Lab of Additive Manufacturing Technology, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China; Research Center of Digital Medicine and 3D Printing Technology of Jiangsu Province, Nanjing, China
| | - Dawei Ge
- Department of Orthopedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Key Lab of Additive Manufacturing Technology, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China; Research Center of Digital Medicine and 3D Printing Technology of Jiangsu Province, Nanjing, China
| | - Yang Huang
- International Innovation Center for Forest Chemicals & Materials and Jiangsu Co-Innovation Center of Efficient Processing & Utilization of Forest Resources, Nanjing Forestry University, Nanjing, China
| | - Qingqiang Yao
- Department of Orthopedic Surgery, Institute of Digital Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Key Lab of Additive Manufacturing Technology, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China; Research Center of Digital Medicine and 3D Printing Technology of Jiangsu Province, Nanjing, China.
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4
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Staszkiewicz R, Gładysz D, Sobański D, Bolechała F, Golec E, Dammermann W, Grabarek BO. The Impacts of Intervertebral Disc Degeneration of the Spine, Alcohol Consumption, Smoking Tobacco Products, and Glycemic Disorders on the Expression Profiles of Neurotrophins-3 and -4. Biomedicines 2024; 12:427. [PMID: 38398029 PMCID: PMC10886622 DOI: 10.3390/biomedicines12020427] [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: 01/14/2024] [Revised: 02/09/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
In the etiology of discogenic pain, attention is paid to the role of neurotrophic factors, which include classic neurotrophins (NTs). This study aimed to assess changes in the concentrations of NT-3 and NT-4 in the intervertebral discs (IVDs) of the lumbosacral (L/S) spine depending on the advancement of degenerative changes, pain severity, habits, and comorbidities. The study group included 113 patients who underwent microdiscectomy due to degenerative IVD disease of the L/S spine. The severity of degenerative IVD changes was assessed using the five-point Pfirrmann scale, and the pain intensity was assessed according to the visual analog scale (VAS). In turn, the control group included 81 participants from whom IVDs of the L/S section of the spine were collected post-mortem during forensic autopsy or organ donation. At the mRNA level, we noted NT-3 overexpression in the test samples compared with the controls (fold change (FC) = 9.12 ± 0.56; p < 0.05), while NT-4 transcriptional activity was decreased in the test samples compared with the controls (FC = 0.33 ± 0.07; p < 0.05). However, at the protein level, the concentrations of NT-3 (134 ± 5.78 pg/mL vs. 6.78 ± 1.17 pg/mL; p < 0.05) and NT-4 (316.77 ± 8.19 pg/mL vs. 76.92 ± 4.82 pg/mL; p < 0.05) were significantly higher in the test samples compared with the control samples. Nevertheless, the concentration of both proteins did not statistically significantly change depending on the advancement of degenerative changes and the pain intensity (p > 0.05). In addition, higher levels of NT-3 and NT-4 were noted in IVD samples from patients who consumed alcohol, smoked tobacco, were overweight/obese, or had comorbid diabetes compared with patients without these risk factors (p < 0.05). Our analysis confirmed that differences in the degenerative process of IVD, energy metabolism, and lifestyle are related to changes in the concentration profiles of NT-3 and NT-4.
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Affiliation(s)
- Rafał Staszkiewicz
- Collegium Medicum, WSB University, 41-300 Dabrowa Gornicza, Poland;
- Department of Neurosurgery, 5th Military Clinical Hospital, SP ZOZ Polyclinic in Cracow, 30-901 Cracow, Poland;
- Department of Neurosurgery, Faculty of Medicine in Zabrze, Academy of Silesia, 40-555 Katowice, Poland
| | - Dorian Gładysz
- Department of Neurosurgery, 5th Military Clinical Hospital, SP ZOZ Polyclinic in Cracow, 30-901 Cracow, Poland;
- Department of Neurosurgery, Faculty of Medicine in Zabrze, Academy of Silesia, 40-555 Katowice, Poland
| | - Dawid Sobański
- Collegium Medicum, WSB University, 41-300 Dabrowa Gornicza, Poland;
- Department of Neurosurgery, Szpital sw. Rafala in Cracow, 30-693 Cracow, Poland
- Department of Neurosurgery, Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski University in Cracow, 30-705 Cracow, Poland
| | - Filip Bolechała
- Department of Forensic Medicine, Jagiellonian University Medical College, 31-531 Cracow, Poland;
| | - Edward Golec
- Department of Rehabilitation in Orthopaedics, Faculty of Motor Rehabilitation, Bronisław Czech University of Physical Education, 31-571 Cracow, Poland;
| | - Werner Dammermann
- Center of Internal Medicine II, University Hospital Brandenburg, 03048 Brandenburg, Germany;
- Faculty of Health Sciences Brandenburg, Brandenburg Medical School Theodor Fontane, 16816 Neuruppin, Germany
| | - Beniamin Oskar Grabarek
- Collegium Medicum, WSB University, 41-300 Dabrowa Gornicza, Poland;
- Gyncentrum, Laboratory of Molecular Biology and Virology, Department of Molecular Biology, 40-851 Katowice, Poland
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Wang Y, Dong Z, An Z, Jin W. Cancer cachexia: Focus on cachexia factors and inter-organ communication. Chin Med J (Engl) 2024; 137:44-62. [PMID: 37968131 PMCID: PMC10766315 DOI: 10.1097/cm9.0000000000002846] [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: 05/25/2023] [Indexed: 11/17/2023] Open
Abstract
ABSTRACT Cancer cachexia is a multi-organ syndrome and closely related to changes in signal communication between organs, which is mediated by cancer cachexia factors. Cancer cachexia factors, being the general name of inflammatory factors, circulating proteins, metabolites, and microRNA secreted by tumor or host cells, play a role in secretory or other organs and mediate complex signal communication between organs during cancer cachexia. Cancer cachexia factors are also a potential target for the diagnosis and treatment. The pathogenesis of cachexia is unclear and no clear effective treatment is available. Thus, the treatment of cancer cachexia from the perspective of the tumor ecosystem rather than from the perspective of a single molecule and a single organ is urgently needed. From the point of signal communication between organs mediated by cancer cachexia factors, finding a deeper understanding of the pathogenesis, diagnosis, and treatment of cancer cachexia is of great significance to improve the level of diagnosis and treatment. This review begins with cancer cachexia factors released during the interaction between tumor and host cells, and provides a comprehensive summary of the pathogenesis, diagnosis, and treatment for cancer cachexia, along with a particular sight on multi-organ signal communication mediated by cancer cachexia factors. This summary aims to deepen medical community's understanding of cancer cachexia and may conduce to the discovery of new diagnostic and therapeutic targets for cancer cachexia.
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Affiliation(s)
- Yongfei Wang
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, China
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, China
| | - Zikai Dong
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, China
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, China
| | - Ziyi An
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, China
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, China
| | - Weilin Jin
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, China
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, China
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Tonyan S, Pospelova M, Krasnikova V, Fionik O, Alekseeva T, Samochernykh K, Ivanova N, Vavilova T, Vasilieva E, Makhanova A, Nikolaeva A, Bukkieva T, Combs S, Shevtsov M. Neurotrophin-3 (NT-3) as a Potential Biomarker of the Peripheral Nervous System Damage Following Breast Cancer Treatment. PATHOPHYSIOLOGY 2023; 30:110-122. [PMID: 37092524 PMCID: PMC10123681 DOI: 10.3390/pathophysiology30020010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 03/30/2023] [Accepted: 04/01/2023] [Indexed: 04/05/2023] Open
Abstract
Damage to the peripheral nervous system (PNS) is a common complication of breast cancer (BC) treatment, with 60 to 80% of breast cancer survivors experiencing symptoms of PNS damage. In the current study, the levels of brain-derived neurotrophic factor (BDNF), galectin-3 (Gal-3), and neurotrophin-3 (NT-3) were measured in the blood serum of BC patients by ELISA as potential biomarkers that might indicate the PNS damage. Sixty-seven patients were enrolled in this multi-center trial and compared to the aged-matched healthy female volunteers (control group) (n = 25). Intergroup comparison of biomarker levels (i.e., Gal-3 and BDNF) did not show significant differences in any of the studied subgroups. However, intriguingly, NT-3 levels were significantly higher in BC patients as compared to healthy volunteers, constituting 14.85 [10.3; 18.0] and 5.74 [4.56; 13.7] pg/mL, respectively (p < 0.001). In conclusion, NT-3 might be employed as a potential biomarker in BC patients with clinical manifestations of PNS damage. However, further studies to validate its correlation to the degree of peripheral nervous system lesions are of high value.
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Affiliation(s)
- Samvel Tonyan
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Maria Pospelova
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Varvara Krasnikova
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Olga Fionik
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Tatyana Alekseeva
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Konstantin Samochernykh
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Nataliya Ivanova
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Tatyana Vavilova
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Elena Vasilieva
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Albina Makhanova
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Aleksandra Nikolaeva
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Tatyana Bukkieva
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Stephanie Combs
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaninger Str. 22, 81675 Munich, Germany
| | - Maxim Shevtsov
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaninger Str. 22, 81675 Munich, Germany
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The Preventive Effect of Specific Collagen Peptides against Dexamethasone-Induced Muscle Atrophy in Mice. Molecules 2023; 28:molecules28041950. [PMID: 36838938 PMCID: PMC9960993 DOI: 10.3390/molecules28041950] [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: 12/19/2022] [Revised: 02/13/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023] Open
Abstract
Muscle atrophy, also known as muscle wasting, is the thinning of muscle mass due to muscle disuse, aging, or diseases such as cancer or neurological problems. Muscle atrophy is closely related to the quality of life and has high morbidity and mortality. However, therapeutic options for muscle atrophy are limited, so studies to develop therapeutic agents for muscle loss are always required. For this study, we investigated how orally administered specific collagen peptides (CP) affect muscle atrophy and elucidated its molecular mechanism using an in vivo model. We treated mice with dexamethasone (DEX) to induce a muscular atrophy phenotype and then administered CP (0.25 and 0.5 g/kg) for four weeks. In a microcomputed tomography analysis, CP (0.5 g/kg) intake significantly increased the volume of calf muscles in mice with DEX-induced muscle atrophy. In addition, the administration of CP (0.25 and 0.5 g/kg) restored the weight of the gluteus maximus and the fiber cross-sectional area (CSA) of the pectoralis major and calf muscles, which were reduced by DEX. CP significantly inhibited the mRNA expression of myostatin and the phosphorylation of Smad2, but it did not affect TGF-β, BDNF, or FNDC5 gene expression. In addition, AKT/mTOR, a central pathway for muscle protein synthesis and related to myostatin signaling, was enhanced in the groups that were administered CP. Finally, CP decreased serum albumin levels and increased TNF-α gene expression. Collectively, our in vivo results demonstrate that CP can alleviate muscle wasting through a multitude of mechanisms. Therefore, we propose CP as a supplement or treatment to prevent muscle atrophy.
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Wang XX, Zhang L, Lu Y. Advances in the molecular pathogenesis and cell therapy of stress urinary incontinence. Front Cell Dev Biol 2023; 11:1090386. [PMID: 36846586 PMCID: PMC9944745 DOI: 10.3389/fcell.2023.1090386] [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: 11/08/2022] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
Stress urinary incontinence (SUI) is very common in women. It affects patients' mental and physical health, and imposed huge socioeconomic pressure. The therapeutic effect of conservative treatment is limited, and depends heavily on patient persistence and compliance. Surgical treatment often brings procedure-related adverse complications and higher costs for patients. Therefore, it is necessary to better understand the potential molecular mechanisms underlying stress urinary incontinence and develop new treatment methods. Although some progress has been made in the basic research in recent years, the specific molecular pathogenic mechanisms of SUI are still unclear. Here, we reviewed the published studies on the molecular mechanisms associated with nerves, urethral muscles, periurethral connective tissue and hormones in the pathogenesis of SUI. In addition, we provide an update on the recent progresses in research on the use of cell therapy for treating SUI, including research on stem cells therapy, exosome differentiation and gene regulation.
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Affiliation(s)
- Xiao-xiao Wang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Lei Zhang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
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9
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Sierra APR, Martínez Galán BS, de Sousa CAZ, de Menezes DC, Branquinho JLDO, Neves RL, Arata JG, Bittencourt CA, Barbeiro HV, de Souza HP, Pesquero JB, Cury-Boaventura MF. Exercise Induced-Cytokines Response in Marathon Runners: Role of ACE I/D and BDKRB2 +9/-9 Polymorphisms. Front Physiol 2022; 13:919544. [PMID: 36117688 PMCID: PMC9479100 DOI: 10.3389/fphys.2022.919544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/24/2022] [Indexed: 11/24/2022] Open
Abstract
Renin-angiotensin system (RAS) and kallikrein-kinin system (KKS) have a different site of interaction and modulate vascular tone and inflammatory response as well on exercise adaptation, which is modulated by exercise-induced cytokines. The aim of the study was to evaluate the role of ACE I/D and BDKRB2 +9/−9 polymorphism on exercise-induced cytokine response. Seventy-four male marathon finishers, aged 30 to 55 years, participated in this study. Plasma levels of exercise-induced cytokines were determined 24 h before, immediately after, and 24 h and 72 h after the São Paulo International Marathon. Plasma concentrations of MCP-1, IL-6 and FGF-21 increased after marathon in all genotypes of BDKRB2. IL-10, FSTL and BDNF increased significantly after marathon in the genotypes with the presence of the −9 allele. FSTL and BDNF concentrations were higher in the −9/−9 genotype compared to the +9/+9 genotype before (p = 0.006) and after the race (p = 0.023), respectively. Apelin, IL-15, musclin and myostatin concentrations were significantly reduced after the race only in the presence of −9 allele. Marathon increased plasma concentrations of MCP1, IL-6, BDNF and FGF-21 in all genotypes of ACE I/D polymorphism. Plasma concentrations of IL-8 and MIP-1alpha before the race (p = 0.015 and p = 0.031, respectively), of MIP-1alpha and IL-10 after the race (p = 0.033 and p = 0.047, respectively) and VEGF 72 h after the race (p = 0.018) were lower in II homozygotes compared to runners with the presence of D allele. One day after the race we also observed lower levels of MIP-1alpha in runners with II homozygotes compared to DD homozygotes (p = 0.026). Before the marathon race myostatin concentrations were higher in DD compared to II genotypes (p = 0.009). Myostatin, musclin, IL-15, IL-6 and apelin levels decreased after race in genotypes with the presence of D allele. After the race ACE activity was negatively correlated with MCP1 (r = −56, p < 0.016) and positively correlated with IL-8, IL-10 and MIP1-alpha (r = 0.72, p < 0.0007, r = 0.72, p < 0.0007, r = 0.47, p < 0.048, respectively). The runners with the −9/−9 genotype have greater response in exercise-induced cytokines related to muscle repair and cardioprotection indicating that BDKRB2 participate on exercise adaptations and runners with DD genotype have greater inflammatory response as well as ACE activity was positively correlated with inflammatory mediators. DD homozygotes also had higher myostatin levels which modulates protein homeostasis.
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Affiliation(s)
| | - Bryan Steve Martínez Galán
- Interdisciplinary Post-Graduate Program in Health Sciences, Institute of Physical Activity and Sports Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Cesar Augustus Zocoler de Sousa
- Interdisciplinary Post-Graduate Program in Health Sciences, Institute of Physical Activity and Sports Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Duane Cardoso de Menezes
- Interdisciplinary Post-Graduate Program in Health Sciences, Institute of Physical Activity and Sports Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | | | - Raquel Leão Neves
- Department of Biophysics, Federal University of Sao Paulo, São Paulo, Brazil
| | | | | | | | | | - João Bosco Pesquero
- Department of Biophysics, Federal University of Sao Paulo, São Paulo, Brazil
| | - Maria Fernanda Cury-Boaventura
- Interdisciplinary Post-Graduate Program in Health Sciences, Institute of Physical Activity and Sports Sciences, Cruzeiro do Sul University, São Paulo, Brazil
- *Correspondence: Maria Fernanda Cury-Boaventura,
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10
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Rentería I, García-Suárez PC, Fry AC, Moncada-Jiménez J, Machado-Parra JP, Antunes BM, Jiménez-Maldonado A. The Molecular Effects of BDNF Synthesis on Skeletal Muscle: A Mini-Review. Front Physiol 2022; 13:934714. [PMID: 35874524 PMCID: PMC9306488 DOI: 10.3389/fphys.2022.934714] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/14/2022] [Indexed: 11/13/2022] Open
Abstract
The brain-derived neurotrophic factor (BDNF) is a member of the nerve growth factor family which is generated mainly by the brain. Its main role involve synaptic modulation, neurogenesis, neuron survival, immune regulation, myocardial contraction, and angiogenesis in the brain. Together with the encephalon, some peripheral tissues synthesize BDNF like skeletal muscle. On this tissue, this neurotrophin participates on cellular mechanisms related to muscle function maintenance and plasticity as reported on recent scientific works. Moreover, during exercise stimuli the BDNF contributes directly to strengthening neuromuscular junctions, muscle regeneration, insulin-regulated glucose uptake and β-oxidation processes in muscle tissue. Given its vital relevance on many physiological mechanisms, the current mini-review focuses on discussing up-to-date knowledge about BDNF production in skeletal muscle and how this neurotrophin impacts skeletal muscle biology.
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Affiliation(s)
- I Rentería
- Facultad de Deportes, Universidad Autónoma de Baja California, Ensenada, Mexico
| | - P C García-Suárez
- Facultad de Deportes, Universidad Autónoma de Baja California, Ensenada, Mexico.,Department of Health, Sports and Exercise Sciences, University of Kansas, Lawrence, KS, United States
| | - A C Fry
- Department of Health, Sports and Exercise Sciences, University of Kansas, Lawrence, KS, United States
| | - J Moncada-Jiménez
- Human Movement Sciences Research Center (CIMOHU), University of Costa Rica, San José, Costa Rica
| | - J P Machado-Parra
- Facultad de Deportes, Universidad Autónoma de Baja California, Ensenada, Mexico
| | - B M Antunes
- Facultad de Deportes, Universidad Autónoma de Baja California, Ensenada, Mexico
| | - A Jiménez-Maldonado
- Facultad de Deportes, Universidad Autónoma de Baja California, Ensenada, Mexico
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11
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Huang Q, Wu M, Wu X, Zhang Y, Xia Y. Muscle-to-tumor crosstalk: The effect of exercise-induced myokine on cancer progression. Biochim Biophys Acta Rev Cancer 2022; 1877:188761. [PMID: 35850277 DOI: 10.1016/j.bbcan.2022.188761] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 07/11/2022] [Accepted: 07/11/2022] [Indexed: 02/07/2023]
Abstract
Physical exercise has gradually become a focus in cancer treatment due to its pronounced role in reducing cancer risk, enhancing therapeutic efficacy, and improving prognosis. In recent decades, skeletal muscles have been considered endocrine organs, exerting their biological functions via the endocrine, autocrine, and paracrine systems by secreting various types of myokines. The amount of myokines secreted varies depending on the intensity, type, and duration of exercise. Recent studies have shown that muscle-derived myokines are highly involved the effects of exercise on cancer. Multiple myokines, such as interleukin-6 (IL-6), oncostatin M (OSM), secreted protein acidic and rich in cysteine (SPARC), and irisin, directly mediate cancer progression by influencing the proliferation, apoptosis, stemness, drug resistance, metabolic reprogramming, and epithelial-mesenchymal transformation (EMT) of cancer cells. In addition, IL-6, interleukin-8 (IL-8), interleukin-15 (IL-15), brain-derived neurotrophic factor (BDNF), and irisin can improve obesity-induced inflammation by stimulating lipolysis of adipose tissues, promoting glucose uptake, and accelerating the browning of white fat. Furthermore, some myokines could regulate the tumor microenvironment, such as angiogenesis and the immune microenvironment. Cancer cachexia occurs in up to 80% of cancer patients and is responsible for 22%-30% of patient deaths. It is characterized by systemic inflammation and decreased muscle mass. Exercise-induced myokine production is important in regulating cancer cachexia. This review summarizes the roles and underlying mechanisms of myokines, such as IL-6, myostatin, IL-15, irisin, fibroblast growth factor 21 (FGF21) and musclin, in cancer cachexia. Through comprehensive analysis, we conclude that myokines are potential targets for inhibiting cancer progression and the associated cachexia.
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Affiliation(s)
- Qianrui Huang
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Mengling Wu
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xuyi Wu
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China; Key Laboratory of Rehabilitation Medicine in Sichuan Province/Rehabilitation Medicine Research Institute, Chengdu 610041, China
| | - Yiwen Zhang
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Yong Xia
- Department of Rehabilitation Medicine, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China; Key Laboratory of Rehabilitation Medicine in Sichuan Province/Rehabilitation Medicine Research Institute, Chengdu 610041, China.
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12
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Idrisova KF, Zeinalova AK, Masgutova GA, Bogov AA, Allegrucci C, Syromiatnikova VY, Salafutdinov II, Garanina EE, Andreeva DI, Kadyrov AA, Rizvanov AA, Masgutov RF. Application of neurotrophic and proangiogenic factors as therapy after peripheral nervous system injury. Neural Regen Res 2022; 17:1240-1247. [PMID: 34782557 PMCID: PMC8643040 DOI: 10.4103/1673-5374.327329] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/14/2020] [Accepted: 06/04/2021] [Indexed: 11/24/2022] Open
Abstract
The intrinsic ability of peripheral nerves to regenerate after injury is extremely limited, especially in case of severe injury. This often leads to poor motor function and permanent disability. Existing approaches for the treatment of injured nerves do not provide appropriate conditions to support survival and growth of nerve cells. This drawback can be compensated by the use of gene therapy and cell therapy-based drugs that locally provide an increase in the key regulators of nerve growth, including neurotrophic factors and extracellular matrix proteins. Each growth factor plays its own specific angiotrophic or neurotrophic role. Currently, growth factors are widely studied as accelerators of nerve regeneration. Particularly noteworthy is synergy between various growth factors, that is essential for both angiogenesis and neurogenesis. Fibroblast growth factor 2 and vascular endothelial growth factor are widely known for their proangiogenic effects. At the same time, fibroblast growth factor 2 and vascular endothelial growth factor stimulate neural cell growth and play an important role in neurodegenerative diseases of the peripheral nervous system. Taken together, their neurotrophic and angiogenic properties have positive effect on the regeneration process. In this review we provide an in-depth overview of the role of fibroblast growth factor 2 and vascular endothelial growth factor in the regeneration of peripheral nerves, thus demonstrating their neurotherapeutic efficacy in improving neuron survival in the peripheral nervous system.
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Affiliation(s)
| | | | | | | | - Cinzia Allegrucci
- Biodiscovery Institute, School of Veterinary Medicine and Science, University of Nottingham, Nottingham, UK
| | | | | | | | | | | | | | - Ruslan Faridovich Masgutov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
- Republican Clinical Hospital, Kazan, Russia
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13
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Myokines and Resistance Training: A Narrative Review. Int J Mol Sci 2022; 23:ijms23073501. [PMID: 35408868 PMCID: PMC8998961 DOI: 10.3390/ijms23073501] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 01/27/2023] Open
Abstract
In the last few years, the muscular system has gained attention due to the discovery of the muscle-secretome and its high potency for retaining or regaining health. These cytokines, described as myokines, released by the working muscle, are involved in anti-inflammatory, metabolic and immunological processes. These are able to influence human health in a positive way and are a target of research in metabolic diseases, cancer, neurological diseases, and other non-communicable diseases. Therefore, different types of exercise training were investigated in the last few years to find associations between exercise, myokines and their effects on human health. Particularly, resistance training turned out to be a powerful stimulus to enhance myokine release. As there are different types of resistance training, different myokines are stimulated, depending on the mode of training. This narrative review gives an overview about resistance training and how it can be utilized to stimulate myokine production in order to gain a certain health effect. Finally, the question of why resistance training is an important key regulator in human health will be discussed.
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14
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Pastor AM, Blumer R, de la Cruz RR. Extraocular Motoneurons and Neurotrophism. ADVANCES IN NEUROBIOLOGY 2022; 28:281-319. [PMID: 36066830 DOI: 10.1007/978-3-031-07167-6_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Extraocular motoneurons are located in three brainstem nuclei: the abducens, trochlear and oculomotor. They control all types of eye movements by innervating three pairs of agonistic/antagonistic extraocular muscles. They exhibit a tonic-phasic discharge pattern, demonstrating sensitivity to eye position and sensitivity to eye velocity. According to their innervation pattern, extraocular muscle fibers can be classified as singly innervated muscle fiber (SIF), or the peculiar multiply innervated muscle fiber (MIF). SIF motoneurons show anatomical and physiological differences with MIF motoneurons. The latter are smaller and display lower eye position and velocity sensitivities as compared with SIF motoneurons.
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Affiliation(s)
- Angel M Pastor
- Departamento de Fisiología, Universidad de Sevilla, Seville, Spain.
| | - Roland Blumer
- Center of Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria
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15
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Zhu X, Xie W, Zhang J, Strong JA, Zhang JM. Sympathectomy decreases pain behaviors and nerve regeneration by downregulating monocyte chemokine CCL2 in dorsal root ganglia in the rat tibial nerve crush model. Pain 2022; 163:e106-e120. [PMID: 33941753 PMCID: PMC8556407 DOI: 10.1097/j.pain.0000000000002321] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 04/15/2021] [Indexed: 01/03/2023]
Abstract
ABSTRACT Peripheral nerve regeneration is associated with pain in several preclinical models of neuropathic pain. Some neuropathic pain conditions and preclinical neuropathic pain behaviors are improved by sympathetic blockade. In this study, we examined the effect of a localized "microsympathectomy," ie, cutting the gray rami containing sympathetic postganglionic axons where they enter the L4 and L5 spinal nerves, which is more analogous to clinically used sympathetic blockade compared with chemical or surgical sympathectomy. We also examined manipulations of CCL2 (monocyte chemoattractant protein 1), a key player in both regeneration and pain. We used rat tibial nerve crush as a neuropathic pain model in which peripheral nerve regeneration can occur successfully. CCL2 in the sensory ganglia was increased by tibial nerve crush and reduced by microsympathectomy. Microsympathectomy and localized siRNA-mediated knockdown of CCL2 in the lumbar dorsal root ganglion had very similar effects: partial improvement of mechanical hypersensitivity and guarding behavior, reduction of regeneration markers growth-associated protein 43 and activating transcription factor 3, and reduction of macrophage density in the sensory ganglia and regenerating nerve. Microsympathectomy reduced functional regeneration as measured by myelinated action potential propagation through the injury site and denervation-induced atrophy of the tibial-innervated gastrocnemius muscle at day 10. Microsympathectomy plus CCL2 knockdown had behavioral effects similar to microsympathectomy alone. The results show that local sympathetic effects on neuropathic pain may be mediated in a large part by the effects on expression of CCL2, which in turn regulates the regeneration process.
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Affiliation(s)
- Xiaoyan Zhu
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, U.S.A
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Wenrui Xie
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, U.S.A
| | - Jingdong Zhang
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, U.S.A
| | - Judith A. Strong
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, U.S.A
| | - Jun-Ming Zhang
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, U.S.A
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16
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Di Rosa MC, Zimbone S, Saab MW, Tomasello MF. The Pleiotropic Potential of BDNF beyond Neurons: Implication for a Healthy Mind in a Healthy Body. Life (Basel) 2021; 11:life11111256. [PMID: 34833132 PMCID: PMC8625665 DOI: 10.3390/life11111256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/14/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) represents one of the most widely studied neurotrophins because of the many mechanisms in which it is involved. Among these, a growing body of evidence indicates BDNF as a pleiotropic signaling molecule and unveils non-negligible implications in the regulation of energy balance. BDNF and its receptor are extensively expressed in the hypothalamus, regions where peripheral signals, associated with feeding control and metabolism activation, and are integrated to elaborate anorexigenic and orexigenic effects. Thus, BDNF coordinates adaptive responses to fluctuations in energy intake and expenditure, connecting the central nervous system with peripheral tissues, including muscle, liver, and the adipose tissue in a complex operational network. This review discusses the latest literature dealing with the involvement of BDNF in the maintenance of energy balance. We have focused on the physiological and molecular mechanisms by which BDNF: (I) controls the mitochondrial function and dynamics; (II) influences thermogenesis and tissue differentiation; (III) mediates the effects of exercise on cognitive functions; and (IV) modulates insulin sensitivity and glucose transport at the cellular level. Deepening the understanding of the mechanisms exploited to maintain energy homeostasis will lay the groundwork for the development of novel therapeutical approaches to help people to maintain a healthy mind in a healthy body.
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Affiliation(s)
- Maria Carmela Di Rosa
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy; (M.C.D.R.); (M.W.S.)
- Institute of Crystallography, CNR, Via P. Gaifami 18, 95126 Catania, Italy;
| | - Stefania Zimbone
- Institute of Crystallography, CNR, Via P. Gaifami 18, 95126 Catania, Italy;
| | - Miriam Wissam Saab
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy; (M.C.D.R.); (M.W.S.)
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17
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Hoyt BW, Potter BK, Souza JM. Nerve Interface Strategies for Neuroma Management and Prevention: A Conceptual Approach Guided by Institutional Experience. Hand Clin 2021; 37:373-382. [PMID: 34253310 DOI: 10.1016/j.hcl.2021.05.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In this article, the authors propose a strategy to manage and prevent symptomatic neuromas using a combination of nerve interface approaches. By using a reconstructive paradigm, these procedures provide the components integral to organized nerve regeneration, conferring both improvements in pain and potential for myoelectric control of prostheses in the future. Given the lack of evidence at this point indicating the advantage of any single nerve interface procedure, the authors propose a management approach that maximizes physiologic restoration while limiting morbidity where possible.
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Affiliation(s)
- Benjamin W Hoyt
- USU-Walter Reed Department of Surgery, Walter Reed National Military Medical Center, Uniformed Services University, 8901 Wisconsin Avenue, Bethesda, MD 20814, USA
| | - Benjamin K Potter
- USU-Walter Reed Department of Surgery, Walter Reed National Military Medical Center, Uniformed Services University, 8901 Wisconsin Avenue, Bethesda, MD 20814, USA
| | - Jason M Souza
- Peripheral Nerve Program, USU-Walter Reed Department of Surgery, Walter Reed National Military Medical Center, Uniformed Services University, 8901 Wisconsin Avenue, Bethesda, MD 20814, USA.
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18
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Gu X, Jin B, Qi Z, Yin X. Identification of potential microRNAs and KEGG pathways in denervation muscle atrophy based on meta-analysis. Sci Rep 2021; 11:13560. [PMID: 34193880 PMCID: PMC8245453 DOI: 10.1038/s41598-021-92489-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 05/24/2021] [Indexed: 12/28/2022] Open
Abstract
The molecular mechanism of muscle atrophy has been studied a lot, but there is no comprehensive analysis focusing on the denervated muscle atrophy. The gene network that controls the development of denervated muscle atrophy needs further elucidation. We examined differentially expressed genes (DEGs) from five denervated muscle atrophy microarray datasets and predicted microRNAs that target these DEGs. We also included the differentially expressed microRNAs datasets of denervated muscle atrophy in previous studies as background information to identify potential key microRNAs. Finally, we compared denervated muscle atrophy with disuse muscle atrophy caused by other reasons, and obtained the Den-genes which only differentially expressed in denervated muscle atrophy. In this meta-analysis, we obtained 429 up-regulated genes, 525 down-regulated genes and a batch of key microRNAs in denervated muscle atrophy. We found eight important microRNA-mRNA interactions (miR-1/Jun, miR-1/Vegfa, miR-497/Vegfa, miR-23a/Vegfa, miR-206/Vegfa, miR-497/Suclg1, miR-27a/Suclg1, miR-27a/Mapk14). The top five KEGG pathways enriched by Den-genes are Insulin signaling pathway, T cell receptor signaling pathway, MAPK signaling pathway, Toll-like receptor signaling pathway and B cell receptor signaling pathway. Our research has delineated the RNA regulatory network of denervated muscle atrophy, and uncovered the specific genes and terms in denervated muscle atrophy.
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Affiliation(s)
- Xinyi Gu
- Department of Orthopedics and Traumatology, Peking University People's Hospital, Beijing, 100044, China.,Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100044, China
| | - Bo Jin
- Department of Orthopedics and Traumatology, Peking University People's Hospital, Beijing, 100044, China.,Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100044, China
| | - Zhidan Qi
- Department of Orthopedics and Traumatology, Peking University People's Hospital, Beijing, 100044, China.,Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100044, China
| | - Xiaofeng Yin
- Department of Orthopedics and Traumatology, Peking University People's Hospital, Beijing, 100044, China. .,Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100044, China.
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19
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Yan Z, Qian Y, Fan C. Biomimicry in 3D printing design: implications for peripheral nerve regeneration. Regen Med 2021; 16:683-701. [PMID: 34189955 DOI: 10.2217/rme-2020-0182] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Nerve guide conduits (NGCs) connect dissected nerve stumps and effectively repair short-range peripheral nerve defects. However, for long-range defects, autografts show better therapeutic effects, despite intrinsic limitations. Recent evidence shows that biomimetic design is essential for high-performance NGCs, and 3D printing is a promising fabricating technique. The current work includes a brief review of the challenges for peripheral nerve regeneration. The authors propose a potential solution using biomimetic 3D-printed NGCs as alternative therapies. The assessment of biomimetic designs includes microarchitecture, mechanical property, electrical conductivity and biologics inclusion. The applications of 3D printing in preparing NGCs and present strategies to improve therapeutic effects are also discussed.
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Affiliation(s)
- Zhiwen Yan
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.,Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, 200233, China.,Youth Science and Technology Innovation Studio, Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Yun Qian
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.,Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, 200233, China.,Youth Science and Technology Innovation Studio, Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Cunyi Fan
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.,Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, 200233, China.,Youth Science and Technology Innovation Studio, Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
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20
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Cox CT, Suryavanshi JR, Osemwengie BO, Rosqvist S, Blue M, McKee D, MacKay BJ. Evaluation of postoperative outcomes in patients following multi-level surgical reconstructions with the use Avive ™ soft tissue membrane on nerve after traumatic injury of the upper extremity and lower extremity. SAGE Open Med 2021; 9:20503121211023356. [PMID: 34164128 PMCID: PMC8188973 DOI: 10.1177/20503121211023356] [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: 12/09/2020] [Accepted: 05/19/2021] [Indexed: 11/17/2022] Open
Abstract
Background Treatment of patients with traumatic axonotmesis presents challenges. Processed human umbilical cord membrane has been recently developed with improved handling and resorption time compared to other amniotic membrane wraps, and may be beneficial in nerve reconstruction. This study evaluates postoperative outcomes after traumatic peripheral nerve injury after placement of commercially available processed human umbilical cord membrane. Methods We performed a prospective, single-center pilot study of patients undergoing multi-level surgical reconstruction for exposed, non-transected peripheral nerve. Functional outcomes including pain, range of motion, pinch and grip strength, and the QuickDASH and SF-36 patient-reported outcome measures were recorded, when possible, at the 1-week and 3, 6, and 9 months postop visit. One-tailed paired t-tests were performed to evaluate outcome improvement at final follow-up. Results Twenty patients had processed human umbilical cord membrane placement without surgical complications. Mean follow-up was 7.5 months (range: 3-10 months) and mean age was 39 years (range: 15-65). Twelve (67%) patients were male, and the majority of placement sites were in the upper extremity (85%). Mean preoperative visual analog scale pain score was significantly reduced at most recent follow-up, as were QuickDASH scores. All patients had improved functional outcomes at the 9-month follow-up, and SF-36 outcomes at 9 months showed improvement across all dimensions. Conclusion This study indicates that processed human umbilical cord membrane may be a useful adjunct in nerve surgery with noted improvements in postoperative function, pain, and patient-reported outcome measures. Future studies are needed to assess long-term outcomes after traumatic nerve injury treated with processed human umbilical cord membrane.
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Affiliation(s)
- Cameron T Cox
- Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Joash R Suryavanshi
- Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Bradley O Osemwengie
- Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Sterling Rosqvist
- Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Matthew Blue
- Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Desirae McKee
- Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA.,University Medical Center, Lubbock, TX, USA
| | - Brendan J MacKay
- Department of Orthopaedic Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA.,University Medical Center, Lubbock, TX, USA
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21
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Saini J, Faroni A, Reid AJ, Mouly V, Butler-Browne G, Lightfoot AP, McPhee JS, Degens H, Al-Shanti N. Cross-talk between motor neurons and myotubes via endogenously secreted neural and muscular growth factors. Physiol Rep 2021; 9:e14791. [PMID: 33931983 PMCID: PMC8087923 DOI: 10.14814/phy2.14791] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/11/2021] [Accepted: 02/12/2021] [Indexed: 02/07/2023] Open
Abstract
Neuromuscular junction (NMJ) research is vital to advance the understanding of neuromuscular patho‐physiology and development of novel therapies for diseases associated with NM dysfunction. In vivo, the micro‐environment surrounding the NMJ has a significant impact on NMJ formation and maintenance via neurotrophic and differentiation factors that are secreted as a result of cross‐talk between muscle fibers and motor neurons. Recently we showed the formation of functional NMJs in vitro in a co‐culture of immortalized human myoblasts and motor neurons from rat‐embryo spinal‐cord explants, using a culture medium free from serum and neurotrophic or growth factors. The aim of this study was to assess how functional NMJs were established in this co‐culture devoid of exogenous neural growth factors. To investigate this, an ELISA‐based microarray was used to compare the composition of soluble endogenously secreted growth factors in this co‐culture with an a‐neural muscle culture. The levels of seven neurotrophic factors brain‐derived neurotrophic factor (BDNF), glial‐cell‐line‐derived neurotrophic factor (GDNF), insulin‐like growth factor‐binding protein‐3 (IGFBP‐3), insulin‐like growth factor‐1 (IGF‐1), neurotrophin‐3 (NT‐3), neurotrophin‐4 (NT‐4), and vascular endothelial growth factor (VEGF) were higher (p < 0.05) in the supernatant of NMJ culture compared to those in the supernatant of the a‐neural muscle culture. This indicates that the cross‐talk between muscle and motor neurons promotes the secretion of soluble growth factors contributing to the local microenvironment thereby providing a favourable regenerative niche for NMJs formation and maturation.
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Affiliation(s)
- Jasdeep Saini
- Musculoskeletal Science & Sports Medicine Research Centre, Department of Life Sciences, Manchester Metropolitan University, Manchester, UK
| | - Alessandro Faroni
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.,Dept. of Plastic Surgery & Burns, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Adam J Reid
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.,Dept. of Plastic Surgery & Burns, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Vincent Mouly
- Center for Research in Myology, Sorbonne Université-INSERM, Paris, France
| | | | - Adam P Lightfoot
- Musculoskeletal Science & Sports Medicine Research Centre, Department of Life Sciences, Manchester Metropolitan University, Manchester, UK
| | - Jamie S McPhee
- Department of Sport and Exercise Sciences, Manchester Metropolitan University, Manchester, UK
| | - Hans Degens
- Musculoskeletal Science & Sports Medicine Research Centre, Department of Life Sciences, Manchester Metropolitan University, Manchester, UK.,Lithuanian Sports University, Institute of Sport Science and Innovations, Kaunas, Lithuania
| | - Nasser Al-Shanti
- Musculoskeletal Science & Sports Medicine Research Centre, Department of Life Sciences, Manchester Metropolitan University, Manchester, UK
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22
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Jodeiri Farshbaf M, Alviña K. Multiple Roles in Neuroprotection for the Exercise Derived Myokine Irisin. Front Aging Neurosci 2021; 13:649929. [PMID: 33935687 PMCID: PMC8086837 DOI: 10.3389/fnagi.2021.649929] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 03/15/2021] [Indexed: 12/11/2022] Open
Abstract
Exercise has multiple beneficial effects on health including decreasing the risk of neurodegenerative diseases. Such effects are thought to be mediated (at least in part) by myokines, a collection of cytokines and other small proteins released from skeletal muscles. As an endocrine organ, skeletal muscle synthesizes and secretes a wide range of myokines which contribute to different functions in different organs, including the brain. One such myokine is the recently discovered protein Irisin, which is secreted into circulation from skeletal muscle during exercise from its membrane bound precursor Fibronectin type III domain-containing protein 5 (FNDC5). Irisin contributes to metabolic processes such as glucose homeostasis and browning of white adipose tissue. Irisin also crosses the blood brain barrier and initiates a neuroprotective genetic program in the hippocampus that culminates with increased expression of brain derived neurotrophic factor (BDNF). Furthermore, exercise and FNDC5/Irisin have been shown to have several neuroprotective effects against injuries in ischemia and neurodegenerative disease models, including Alzheimer's disease. In addition, Irisin has anxiolytic and antidepressant effects. In this review we present and summarize recent findings on the multiple effects of Irisin on neural function, including signaling pathways and mechanisms involved. We also discuss how exercise can positively influence brain function and mental health via the "skeletal muscle-brain axis." While there are still many unanswered questions, we put forward the idea that Irisin is a potentially essential mediator of the skeletal muscle-brain crosstalk.
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Affiliation(s)
| | - Karina Alviña
- Department of Biological Sciences, Texas Tech University, Lubbock, TX, United States.,Department of Neuroscience, University of Florida, Gainesville, FL, United States
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23
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Ngo TB, Spearman BS, Hlavac N, Schmidt CE. Three-Dimensional Bioprinted Hyaluronic Acid Hydrogel Test Beds for Assessing Neural Cell Responses to Competitive Growth Stimuli. ACS Biomater Sci Eng 2020; 6:6819-6830. [DOI: 10.1021/acsbiomaterials.0c00940] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Tran B. Ngo
- J. Crayton Pruitt Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Benjamin S. Spearman
- J. Crayton Pruitt Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Nora Hlavac
- J. Crayton Pruitt Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Christine E. Schmidt
- J. Crayton Pruitt Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
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Moreau N, Boucher Y. Hedging against Neuropathic Pain: Role of Hedgehog Signaling in Pathological Nerve Healing. Int J Mol Sci 2020; 21:ijms21239115. [PMID: 33266112 PMCID: PMC7731127 DOI: 10.3390/ijms21239115] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 11/28/2020] [Accepted: 11/29/2020] [Indexed: 12/23/2022] Open
Abstract
The peripheral nervous system has important regenerative capacities that regulate and restore peripheral nerve homeostasis. Following peripheral nerve injury, the nerve undergoes a highly regulated degeneration and regeneration process called Wallerian degeneration, where numerous cell populations interact to allow proper nerve healing. Recent studies have evidenced the prominent role of morphogenetic Hedgehog signaling pathway and its main effectors, Sonic Hedgehog (SHH) and Desert Hedgehog (DHH) in the regenerative drive following nerve injury. Furthermore, dysfunctional regeneration and/or dysfunctional Hedgehog signaling participate in the development of chronic neuropathic pain that sometimes accompanies nerve healing in the clinical context. Understanding the implications of this key signaling pathway could provide exciting new perspectives for future research on peripheral nerve healing.
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Affiliation(s)
- Nathan Moreau
- Department of Oral Medicine and Oral Surgery, Bretonneau Hospital (AP-HP), 75018 Paris, France;
- Faculty of Dental Medicine-Montrouge, University of Paris, 92120 Montrouge, France
| | - Yves Boucher
- Department of Dental Medicine, Pitié-Salpêtrière Hospital (AP-HP), 75013 Paris, France
- Faculty of Dental Medicine-Garancière, University of Paris, 75006 Paris, France
- Correspondence:
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Guedan-Duran A, Jemni-Damer N, Orueta-Zenarruzabeitia I, Guinea GV, Perez-Rigueiro J, Gonzalez-Nieto D, Panetsos F. Biomimetic Approaches for Separated Regeneration of Sensory and Motor Fibers in Amputee People: Necessary Conditions for Functional Integration of Sensory-Motor Prostheses With the Peripheral Nerves. Front Bioeng Biotechnol 2020; 8:584823. [PMID: 33224936 PMCID: PMC7670549 DOI: 10.3389/fbioe.2020.584823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 09/25/2020] [Indexed: 12/22/2022] Open
Abstract
The regenerative capacity of the peripheral nervous system after an injury is limited, and a complete function is not recovered, mainly due to the loss of nerve tissue after the injury that causes a separation between the nerve ends and to the disorganized and intermingled growth of sensory and motor nerve fibers that cause erroneous reinnervations. Even though the development of biomaterials is a very promising field, today no significant results have been achieved. In this work, we study not only the characteristics that should have the support that will allow the growth of nerve fibers, but also the molecular profile necessary for a specific guidance. To do this, we carried out an exhaustive study of the molecular profile present during the regeneration of the sensory and motor fibers separately, as well as of the effect obtained by the administration and inhibition of different factors involved in the regeneration. In addition, we offer a complete design of the ideal characteristics of a biomaterial, which allows the growth of the sensory and motor neurons in a differentiated way, indicating (1) size and characteristics of the material; (2) necessity to act at the microlevel, on small groups of neurons; (3) combination of molecules and specific substrates; and (4) temporal profile of those molecules expression throughout the regeneration process. The importance of the design we offer is that it respects the complexity and characteristics of the regeneration process; it indicates the appropriate temporal conditions of molecular expression, in order to obtain a synergistic effect; it takes into account the importance of considering the process at the group of neuron level; and it gives an answer to the main limitations in the current studies.
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Affiliation(s)
- Atocha Guedan-Duran
- Neuro-computing and Neuro-robotics Research Group, Complutense University of Madrid, Madrid, Spain
- Innovation Group, Institute for Health Research San Carlos Clinical Hospital (IdISSC), Madrid, Spain
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
| | - Nahla Jemni-Damer
- Neuro-computing and Neuro-robotics Research Group, Complutense University of Madrid, Madrid, Spain
- Innovation Group, Institute for Health Research San Carlos Clinical Hospital (IdISSC), Madrid, Spain
| | - Irune Orueta-Zenarruzabeitia
- Neuro-computing and Neuro-robotics Research Group, Complutense University of Madrid, Madrid, Spain
- Innovation Group, Institute for Health Research San Carlos Clinical Hospital (IdISSC), Madrid, Spain
| | - Gustavo Víctor Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Department of Material Science, Civil Engineering Superior School, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
- Silk Biomed SL, Madrid, Spain
| | - José Perez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Department of Material Science, Civil Engineering Superior School, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
- Silk Biomed SL, Madrid, Spain
| | - Daniel Gonzalez-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
- Silk Biomed SL, Madrid, Spain
| | - Fivos Panetsos
- Neuro-computing and Neuro-robotics Research Group, Complutense University of Madrid, Madrid, Spain
- Innovation Group, Institute for Health Research San Carlos Clinical Hospital (IdISSC), Madrid, Spain
- Silk Biomed SL, Madrid, Spain
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26
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Dysregulated Autophagy Mediates Sarcopenic Obesity and Its Complications via AMPK and PGC1α Signaling Pathways: Potential Involvement of Gut Dysbiosis as a Pathological Link. Int J Mol Sci 2020; 21:ijms21186887. [PMID: 32961822 PMCID: PMC7555990 DOI: 10.3390/ijms21186887] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/17/2020] [Accepted: 09/18/2020] [Indexed: 12/13/2022] Open
Abstract
Sarcopenic obesity (SOB), which is closely related to being elderly as a feature of aging, is recently gaining attention because it is associated with many other age-related diseases that present as altered intercellular communication, dysregulated nutrient sensing, and mitochondrial dysfunction. Along with insulin resistance and inflammation as the core pathogenesis of SOB, autophagy has recently gained attention as a significant mechanism of muscle aging in SOB. Known as important cellular metabolic regulators, the AMP-activated protein kinase (AMPK) and the peroxisome proliferator-activated receptor-gamma coactivator-1 alpha (PGC-1α) signaling pathways play an important role in autophagy, inflammation, and insulin resistance, as well as mutual communication between skeletal muscle, adipose tissue, and the liver. Furthermore, AMPK and PGC-1α signaling pathways are implicated in the gut microbiome-muscle axis. In this review, we describe the pathological link between SOB and its associated complications such as metabolic, cardiovascular, and liver disease, falls and fractures, osteoarthritis, pulmonary disease, and mental health via dysregulated autophagy controlled by AMPK and/or PGC-1α signaling pathways. Here, we propose potential treatments for SOB by modulating autophagy activity and gut dysbiosis based on plausible pathological links.
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Stewart CE, Kan CFK, Stewart BR, Sanicola HW, Jung JP, Sulaiman OAR, Wang D. Machine intelligence for nerve conduit design and production. J Biol Eng 2020; 14:25. [PMID: 32944070 PMCID: PMC7487837 DOI: 10.1186/s13036-020-00245-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 08/13/2020] [Indexed: 02/08/2023] Open
Abstract
Nerve guidance conduits (NGCs) have emerged from recent advances within tissue engineering as a promising alternative to autografts for peripheral nerve repair. NGCs are tubular structures with engineered biomaterials, which guide axonal regeneration from the injured proximal nerve to the distal stump. NGC design can synergistically combine multiple properties to enhance proliferation of stem and neuronal cells, improve nerve migration, attenuate inflammation and reduce scar tissue formation. The aim of most laboratories fabricating NGCs is the development of an automated process that incorporates patient-specific features and complex tissue blueprints (e.g. neurovascular conduit) that serve as the basis for more complicated muscular and skin grafts. One of the major limitations for tissue engineering is lack of guidance for generating tissue blueprints and the absence of streamlined manufacturing processes. With the rapid expansion of machine intelligence, high dimensional image analysis, and computational scaffold design, optimized tissue templates for 3D bioprinting (3DBP) are feasible. In this review, we examine the translational challenges to peripheral nerve regeneration and where machine intelligence can innovate bottlenecks in neural tissue engineering.
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Affiliation(s)
- Caleb E. Stewart
- Current Affiliation: Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport Louisiana, USA
| | - Chin Fung Kelvin Kan
- Current Affiliation: Department of General Surgery, Brigham and Women’s Hospital, Boston, MA 02115 USA
| | - Brody R. Stewart
- Current Affiliation: Department of Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Henry W. Sanicola
- Current Affiliation: Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport Louisiana, USA
| | - Jangwook P. Jung
- Department of Biological Engineering, Louisiana State University, Baton Rouge, LA 70803 USA
| | - Olawale A. R. Sulaiman
- Ochsner Neural Injury & Regeneration Laboratory, Ochsner Clinic Foundation, New Orleans, LA 70121 USA
- Department of Neurosurgery, Ochsner Clinic Foundation, New Orleans, 70121 USA
| | - Dadong Wang
- Quantitative Imaging Research Team, Data 61, Commonwealth Scientific and Industrial Research Organization, Marsfield, NSW 2122 Australia
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Carvalho CR, Oliveira JM, Reis RL. Modern Trends for Peripheral Nerve Repair and Regeneration: Beyond the Hollow Nerve Guidance Conduit. Front Bioeng Biotechnol 2019; 7:337. [PMID: 31824934 PMCID: PMC6882937 DOI: 10.3389/fbioe.2019.00337] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 10/30/2019] [Indexed: 12/13/2022] Open
Abstract
Peripheral nerve repair and regeneration remains among the greatest challenges in tissue engineering and regenerative medicine. Even though peripheral nerve injuries (PNIs) are capable of some degree of regeneration, frail recovery is seen even when the best microsurgical technique is applied. PNIs are known to be very incapacitating for the patient, due to the deprivation of motor and sensory abilities. Since there is no optimal solution for tackling this problem up to this day, the evolution in the field is constant, with innovative designs of advanced nerve guidance conduits (NGCs) being reported every day. As a basic concept, a NGC should act as a physical barrier from the external environment, concomitantly acting as physical guidance for the regenerative axons across the gap lesion. NGCs should also be able to retain the naturally released nerve growth factors secreted by the damaged nerve stumps, as well as reducing the invasion of scar tissue-forming fibroblasts to the injury site. Based on the neurobiological knowledge related to the events that succeed after a nerve injury, neuronal subsistence is subjected to the existence of an ideal environment of growth factors, hormones, cytokines, and extracellular matrix (ECM) factors. Therefore, it is known that multifunctional NGCs fabricated through combinatorial approaches are needed to improve the functional and clinical outcomes after PNIs. The present work overviews the current reports dealing with the several features that can be used to improve peripheral nerve regeneration (PNR), ranging from the simple use of hollow NGCs to tissue engineered intraluminal fillers, or to even more advanced strategies, comprising the molecular and gene therapies as well as cell-based therapies.
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Affiliation(s)
- Cristiana R. Carvalho
- 3B's Research Group, I3Bs – Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Avepark, Guimarães, Portugal
| | - Joaquim M. Oliveira
- 3B's Research Group, I3Bs – Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Avepark, Guimarães, Portugal
| | - Rui L. Reis
- 3B's Research Group, I3Bs – Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Avepark, Guimarães, Portugal
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Effects of Resistance Exercise on Cerebral Redox Regulation and Cognition: An Interplay Between Muscle and Brain. Antioxidants (Basel) 2019; 8:antiox8110529. [PMID: 31698763 PMCID: PMC6912783 DOI: 10.3390/antiox8110529] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 10/31/2019] [Accepted: 11/05/2019] [Indexed: 01/08/2023] Open
Abstract
This review highlighted resistance training as an important training type for the brain. Most studies that use physical exercise for the prevention or treatment of neurodegenerative diseases have focused on aerobic physical exercise, revealing different behavioral, biochemical, and molecular effects. However, recent studies have shown that resistance training can also significantly contribute to the prevention of neurodegenerative diseases as well as to the maintenance, development, and recovery of brain activities through specific neurochemical adaptations induced by the training. In this scenario we observed the results of several studies published in different journals in the last 20 years, focusing on the effects of resistance training on three main neurological aspects: Neuroprotective mechanisms, oxidative stress, and cognition. Systematic database searches of PubMed, Web of Science, Scopus, and Medline were performed to identify peer-reviewed studies from the 2000s. Combinations of keywords related to brain disease, aerobic/resistance, or strength physical exercise were used. Other variables were not addressed in this review but should be considered for a complete understanding of the effects of training in the brain.
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Hou Y, Wang X, Zhang Z, Luo J, Cai Z, Wang Y, Li Y. Repairing Transected Peripheral Nerve Using a Biomimetic Nerve Guidance Conduit Containing Intraluminal Sponge Fillers. Adv Healthc Mater 2019; 8:e1900913. [PMID: 31583854 DOI: 10.1002/adhm.201900913] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/11/2019] [Indexed: 12/29/2022]
Abstract
Nerve guide conduits (NGCs) with geometric design have shown significant advantages in guidance of nerve reinnervation across the defect of injured peripheral nerves. It is realized that intraluminal fillers with distinctive structure can effectively provide an inner guidance for sprouting of axons and improve the permeability of NGC. In this work, a poly(lactic-co-glycolic acid) (PLGA) NGC is prepared containing intraluminal sponge fillers (labeled as ISF-NGC) and used for reconstruction of a rat sciatic nerve with a 10 mm gap. For comparison, the same procedure is applied to a single hollow PLGA NGC (labeled as H-NGC) and an autologous nerve. As evidenced by significantly improved nerve morphology and function, the ISF-NGC achieves a superior nerve repair effect over H-NGC, which is comparable to autologous nerve grafting. It is likely that the H-NGC only provides a protected tunnel for nerve fiber regrowth and axonal extension, while ISF-NGC offers an extracellular matrix-mimetic architecture as autograft to provide contact guidance for nerve reinnervation. This newly developed ISF-NGC is a promising candidate to aid nerve reinnervation across longer gaps commonly encountered in clinical cases.
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Affiliation(s)
- Yuanjing Hou
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 China
- Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of Technology Wuhan 430070 China
| | - Xinyu Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 China
- Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of Technology Wuhan 430070 China
| | - Zongrui Zhang
- College of Biochemical EngineeringAnhui Polytechnic University Wuhu 241000 China
| | - Jing Luo
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 China
- Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of Technology Wuhan 430070 China
| | - Zhengwei Cai
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 China
- Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of Technology Wuhan 430070 China
| | - Yiyu Wang
- School of Life Science TechnologyHubei Engineering University Xiaogan 432000 China
| | - Yi Li
- Institute of Textiles and ClothingThe Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong 999077 China
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Health Benefits of Endurance Training: Implications of the Brain-Derived Neurotrophic Factor-A Systematic Review. Neural Plast 2019; 2019:5413067. [PMID: 31341469 PMCID: PMC6613032 DOI: 10.1155/2019/5413067] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 02/07/2019] [Accepted: 02/24/2019] [Indexed: 02/06/2023] Open
Abstract
This article presents a concept that wide expression of brain-derived neurotrophic factor (BDNF) and its receptors (TrkB) in the nervous tissue, evoked by regular endurance training (ET), can cause numerous motor and metabolic adaptations, which are beneficial for human health. The relationships between the training-evoked increase of endogenous BDNF and molecular and/or physiological adaptations in the nervous structures controlling both motor performance and homeostasis of the whole organism have been presented. Due to a very wide range of plastic changes that ET has exerted on various systems of the body, the improvement of motor skills and counteraction of the development of civilization diseases resulting from the posttraining increase of BDNF/TrkB levels have been discussed, as important for people, who undertake ET. Thus, this report presents the influence of endurance exercises on the (1) transformation of motoneuron properties, which are a final element of the motor pathways, (2) reduction of motor deficits evoked by Parkinson disease, and (3) prevention of the metabolic syndrome (MetS). This review suggests that the increase of posttraining levels of BDNF and its TrkB receptors causes simultaneous changes in the activity of the spinal cord, the substantia nigra, and the hypothalamic nuclei neurons, which are responsible for the alteration of the functional properties of motoneurons innervating the skeletal muscles, for the enhancement of dopamine release in the brain, and for the modulation of hormone levels involved in regulating the metabolic processes, responsively. Finally, training-evoked increase of the BDNF/TrkB leads to a change in a manner of regulation of skeletal muscles, causes a reduction of motor deficits observed in the Parkinson disease, and lowers weight, glucose level, and blood pressure, which accompany the MetS. Therefore, BDNF seems to be the molecular factor of pleiotropic activity, important in the modulation processes, underlying adaptations, which result from ET.
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Halum SL, Bijangi-Vishehsaraei K, Saadatzadeh MR, McRae BR. Differences in Laryngeal Neurotrophic Factor Gene Expression after Recurrent Laryngeal Nerve and Vagus Nerve Injuries. Ann Otol Rhinol Laryngol 2019. [DOI: 10.1177/000348941312201009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Stacey L. Halum
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | | | - M. Reza Saadatzadeh
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis, Indiana
| | - Bryan R. McRae
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis, Indiana
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Lee JH, Jun HS. Role of Myokines in Regulating Skeletal Muscle Mass and Function. Front Physiol 2019; 10:42. [PMID: 30761018 PMCID: PMC6363662 DOI: 10.3389/fphys.2019.00042] [Citation(s) in RCA: 205] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 01/14/2019] [Indexed: 12/27/2022] Open
Abstract
Loss of skeletal muscle mass and strength has recently become a hot research topic with the extension of life span and an increasingly sedentary lifestyle in modern society. Maintenance of skeletal muscle mass is considered an essential determinant of muscle strength and function. Myokines are cytokines synthesized and released by myocytes during muscular contractions. They are implicated in autocrine regulation of metabolism in the muscle as well as in the paracrine/endocrine regulation of other tissues and organs including adipose tissue, the liver, and the brain through their receptors. Till date, secretome analysis of human myocyte culture medium has revealed over 600 myokines. In this review article, we summarize our current knowledge of major identified and characterized myokines focusing on their biological activity and function, particularly in muscle mass and function.
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Affiliation(s)
- Jong Han Lee
- College of Pharmacy, Gachon University, Incheon, South Korea.,Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, South Korea
| | - Hee-Sook Jun
- College of Pharmacy, Gachon University, Incheon, South Korea.,Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, South Korea.,Gachon University Gil Medical Center, Gachon Medical and Convergence Institute, Incheon, South Korea
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Liang H, Nie J, Van Skike CE, Valentine JM, Orr ME. Mammalian Target of Rapamycin at the Crossroad Between Alzheimer's Disease and Diabetes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1128:185-225. [PMID: 31062331 DOI: 10.1007/978-981-13-3540-2_10] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Accumulating evidence suggests that Alzheimer's disease may manifest as a metabolic disorder with pathology and/or dysfunction in numerous tissues. Adults with Alzheimer's disease suffer with significantly more comorbidities than demographically matched Medicare beneficiaries (Zhao et al, BMC Health Serv Res 8:108, 2008b). Reciprocally, comorbid health conditions increase the risk of developing Alzheimer's disease (Haaksma et al, PLoS One 12(5):e0177044, 2017). Type 2 diabetes mellitus is especially notable as the disease shares many overlapping pathologies observed in patients with Alzheimer's disease, including hyperglycemia, hyperinsulinemia, insulin resistance, glucose intolerance, dyslipidemia, inflammation, and cognitive dysfunction, as described in Chap. 8 of this book (Yoshitake et al, Neurology 45(6):1161-1168, 1995; Leibson et al, Am J Epidemiol 145(4):301-308, 1997; Ott et al, Neurology 53(9):1937-1942, 1999; Voisin et al, Rev Med Interne 24(Suppl 3):288s-291s, 2003; Janson et al. Diabetes 53(2):474-481, 2004; Ristow M, J Mol Med (Berl) 82(8):510-529, 2004; Whitmer et al, BMJ 330(7504):1360, 2005, Curr Alzheimer Res 4(2):103-109, 2007; Ohara et al, Neurology 77(12):1126-1134, 2011). Although nondiabetic older adults also experience age-related cognitive decline, diabetes is uniquely associated with a twofold increased risk of Alzheimer's disease, as described in Chap. 2 of this book (Yoshitake et al, Neurology 45(6):1161-1168, 1995; Leibson et al, Am J Epidemiol 145(4):301-308, 1997; Ott et al. Neurology 53(9):1937-1942, 1999; Ohara et al, Neurology 77(12):1126-1134, 2011). Good glycemic control has been shown to improve cognitive status (Cukierman-et al, Diabetes Care 32(2):221-226, 2009), and the use of insulin sensitizers is correlated with a lower rate of cognitive decline in older adults (Morris JK, Burns JM, Curr Neurol Neurosci Rep 12(5):520-527, 2012). At the molecular level, the mechanistic/mammalian target of rapamycin (mTOR) plays a key role in maintaining energy homeostasis. Nutrient availability and cellular stress information, both extracellular and intracellular, are integrated and transduced through mTOR signaling pathways. Aberrant regulation of mTOR occurs in the brains of patients with Alzheimer's disease and in numerous tissues of individuals with type 2 diabetes (Mannaa et al, J Mol Med (Berl) 91(10):1167-1175, 2013). Moreover, modulating mTOR activity with a pharmacological inhibitor, rapamycin, provides wide-ranging health benefits, including healthy life span extension in numerous model organisms (Vellai et al, Nature 426(6967):620, 2003; Jia et al, Development 131(16):3897-3906, 2004; Kapahi et al, Curr Biol 14(10):885-890, 2004; Kaeberlein et al, Science 310(5751):1193-1196, 2005; Powers et al, Genes Dev 20(2):174-184, 2006; Harrison et al, Nature 460(7253):392-395, 2009; Selman et al, Science 326(5949):140-144, 2009; Sharp ZD, Strong R, J Gerontol A Biol Sci Med Sci 65(6):580-589, 2010), which underscores its importance to overall organismal health and longevity. In this chapter, we discuss the physiological role of mTOR signaling and the consequences of mTOR dysregulation in the brain and peripheral tissues, with emphasis on its relevance to the development of Alzheimer's disease and link to type 2 diabetes.
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Affiliation(s)
- Hanyu Liang
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
- Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Jia Nie
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Candice E Van Skike
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Joseph M Valentine
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Miranda E Orr
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
- Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
- San Antonio Geriatric Research, Education and Clinical Center, South Texas Veterans Health Care System, San Antonio, TX, USA.
- Glenn Biggs Institute for Alzheimer's & Neurodegenerative Diseases, San Antonio, TX, USA.
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35
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Dixon AR, Jariwala SH, Bilis Z, Loverde JR, Pasquina PF, Alvarez LM. Bridging the gap in peripheral nerve repair with 3D printed and bioprinted conduits. Biomaterials 2018; 186:44-63. [DOI: 10.1016/j.biomaterials.2018.09.010] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 09/06/2018] [Accepted: 09/07/2018] [Indexed: 01/14/2023]
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36
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Allen RS, Hanif AM, Gogniat MA, Prall BC, Haider R, Aung MH, Prunty MC, Mees LM, Coulter MM, Motz CT, Boatright JH, Pardue MT. TrkB signalling pathway mediates the protective effects of exercise in the diabetic rat retina. Eur J Neurosci 2018. [PMID: 29537701 DOI: 10.1111/ejn.13909] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Diabetic retinopathy is a leading cause of vision loss. Treatment options for early retinopathy are sparse. Exercise protects dying photoreceptors in models of retinal degeneration, thereby preserving vision. We tested the protective effects of exercise on retinal and cognitive deficits in a type 1 diabetes model and determined whether the TrkB pathway mediates this effect. Hyperglycaemia was induced in Long Evans rats via streptozotocin injection (STZ; 100 mg/kg). Following confirmed hyperglycaemia, both control and diabetic rats underwent treadmill exercise for 30 min, 5 days/week at 0 m/min (inactive groups) or 15 m/min (active groups) for 8 weeks. A TrkB receptor antagonist (ANA-12), or vehicle, was injected 2.5 h before exercise training. We measured spatial frequency and contrast sensitivity using optokinetic tracking biweekly post-STZ; retinal function using electroretinography at 4 and 8 weeks; and cognitive function and exploratory behaviour using Y-maze at 8 weeks. Retinal neurotrophin-4 was measured using ELISA. Compared with non-diabetic controls, diabetic rats showed significantly reduced spatial frequency and contrast sensitivity, delayed electroretinogram oscillatory potential and flicker implicit times and reduced cognitive function and exploratory behaviour. Exercise interventions significantly delayed the appearance of all deficits, except for exploratory behaviour. Treatment with ANA-12 significantly reduced this protection, suggesting a TrkB-mediated mechanism. Despite this, no changes in retinal neurotrohin-4 were observed with diabetes or exercise. Exercise protected against early visual and cognitive dysfunction in diabetic rats, suggesting that exercise interventions started after hyperglycaemia diagnosis may be a beneficial treatment. The translational potential is high, given that exercise treatment is non-invasive, patient controlled and inexpensive.
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Affiliation(s)
- Rachael S Allen
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA.,Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Adam M Hanif
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA
| | - Marissa A Gogniat
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA.,Department of Ophthalmology, Emory University, Atlanta, GA, USA
| | - Brian C Prall
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA.,Department of Ophthalmology, Emory University, Atlanta, GA, USA.,Neuroscience Program, Emory University, Atlanta, GA, USA
| | - Raza Haider
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA
| | - Moe H Aung
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA.,Department of Ophthalmology, Emory University, Atlanta, GA, USA.,Neuroscience Program, Emory University, Atlanta, GA, USA
| | - Megan C Prunty
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA
| | - Lukas M Mees
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA.,Department of Ophthalmology, Emory University, Atlanta, GA, USA
| | - Monica M Coulter
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA
| | - Cara T Motz
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA
| | - Jeffrey H Boatright
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA.,Department of Ophthalmology, Emory University, Atlanta, GA, USA.,Neuroscience Program, Emory University, Atlanta, GA, USA
| | - Machelle T Pardue
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, 1670 Clairmont Road, Decatur, GA, 30033, USA.,Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.,Neuroscience Program, Emory University, Atlanta, GA, USA
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Uslusoy F, Nazıroğlu M, Övey İS, Sönmez TT. Hypericum perforatum L. supplementation protects sciatic nerve injury-induced apoptotic, inflammatory and oxidative damage to muscle, blood and brain in rats. J Pharm Pharmacol 2017; 71:83-92. [DOI: 10.1111/jphp.12741] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 03/12/2017] [Indexed: 12/23/2022]
Abstract
Abstract
Objectives
This study was conducted to explore whether Hypericum perforatum L. (HPL) as a potent antioxidant protects against oxidative stress, cytokine production and caspase expression in muscle (soleus), brain and blood of sciatic nerve injury (SNI)-induced rats.
Methods
Thirty-five rats were equally divided into five groups. The first and second were used as untreated control and sham control groups, respectively. The third, fourth and fifth were sham + HPL, SNI and SNI + HPL groups, respectively. The third and fifth groups received 30 mg/kg HPL via gastric gavage for 28 days.
Key findings
High levels of muscle, brain and red blood cell (RBC) lipid peroxidation, plasma cytokine (TNF-α, IL-1β and IL-2), muscle PARP, caspase 3 and 9 expression levels were decreased by HPL treatments. Plasma glutathione peroxidase (GPx) activity, α-tocopherol and melatonin, muscle, brain and RBC reduced glutathione (GSH) concentrations were decreased by SNI induction, whereas their values were increased by HPL treatments. β-carotene and retinol concentrations did not change in the five groups.
Conclusion
HPL may play a role in preventing SNI-induced inflammatory, oxidative and apoptotic blood, muscle and brain damages through upregulation of the GSH and GPx values but downregulation of PARP, caspase level and cytokine production in SNI-induced rats.
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Affiliation(s)
- Fuat Uslusoy
- Department of Plastic and Reconstructive Surgery, Faculty of Medical Faculty, Suleyman Demirel University, Isparta, Turkey
| | - Mustafa Nazıroğlu
- Department of Biophysics, Faculty of Medical Faculty, Suleyman Demirel University, Isparta, Turkey
- Department of Neuroscience, Institute of Health Science, Suleyman Demirel University, Isparta, Turkey
- Neuroscience Research Center, Suleyman Demirel University, Isparta, Turkey
| | - İshak Suat Övey
- Department of Biophysics, Faculty of Medical Faculty, Suleyman Demirel University, Isparta, Turkey
- Department of Neuroscience, Institute of Health Science, Suleyman Demirel University, Isparta, Turkey
| | - Tolga Taha Sönmez
- Department of Plastic and Reconstructive Surgery, Faculty of Medical Faculty, Suleyman Demirel University, Isparta, Turkey
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, RWTH-Aachen, Aachen, Germany
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Guo W, Li Y, Sun C, Duan HQ, Liu S, Xu YQ, Feng SQ. Neurotrophin-4 induces myelin protein zero expression in cultured Schwann cells via the TrkB/PI3K/Akt/mTORC1 pathway. Anim Cells Syst (Seoul) 2017; 21:84-92. [PMID: 30460055 PMCID: PMC6138314 DOI: 10.1080/19768354.2017.1289980] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 10/16/2016] [Accepted: 01/17/2017] [Indexed: 01/18/2023] Open
Abstract
Myelin formation during peripheral nervous system development, as well as myelin repair after injury and in disease, requires multiple intrinsic and extrinsic signals. Neurotrophin-4 (NT-4) is a member of the neurotrophin family, which regulates the development of neuronal networks by participating in the growth of neuronal processes, synaptic development and plasticity, neuronal survival, and differentiation. However, the intracellular signaling pathways by which NT-4 participates in myelination by Schwann cells remain elusive. In this study, we examined the effects of NT-4 on the expression of compact myelin proteins in cultured Schwann cells. Using real-time quantitative RT-PCR and western blotting, we found that NT-4 could significantly enhance the expression of myelin protein zero (MPZ) but not the expression of myelin basic protein or peripheral myelin protein 22. Further, knockdown of truncated TrkB with small interfering RNA could eliminate the effect of NT-4 on MPZ expression. Moreover, we demonstrated that the NT-4-enhanced MPZ expression depended on Akt and mTORC1 signaling. Taken together, these results suggest that NT-4 binds TrkB to enhance the expression of MPZ in Schwann cells, probably through the PI3K/Akt/mTORC1 signaling pathway, thus contributing to myelination.
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Affiliation(s)
- Wei Guo
- Department of Orthopaedics, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Yan Li
- Department of Orthopaedics, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Chao Sun
- Department of Orthopaedics, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Hui-Quan Duan
- Department of Orthopaedics, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Shen Liu
- Department of Orthopaedics, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Yun-Qiang Xu
- Department of Orthopaedics, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Shi-Qing Feng
- Department of Orthopaedics, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
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39
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Changes in neurotrophic factors of adult rat laryngeal muscles during nerve regeneration. Neuroscience 2016; 333:44-53. [DOI: 10.1016/j.neuroscience.2016.07.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 07/01/2016] [Accepted: 07/02/2016] [Indexed: 02/06/2023]
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40
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Silveira PCL, Scheffer DDL, Glaser V, Remor AP, Pinho RA, Aguiar Junior AS, Latini A. Low-level laser therapy attenuates the acute inflammatory response induced by muscle traumatic injury. Free Radic Res 2016; 50:503-13. [PMID: 26983894 DOI: 10.3109/10715762.2016.1147649] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The purpose of this work was to investigate the effect of early and long-term low-level laser therapy (LLLT) on oxidative stress and inflammatory biomarkers after acute-traumatic muscle injury in Wistar rats. Animals were randomly divided into the following four groups: control group (CG), muscle injury group (IG), CG + LLLT, and IG + LLLT: laser treatment with doses of 3 and 5 J/cm(2). Muscle traumatic injury was induced by a single-impact blunt trauma in the rat gastrocnemius. Irradiation for 3 or 5 J/cm(2) was initiated 2, 12, and 24 h after muscle trauma induction, and the treatment was continued for five consecutive days. All the oxidant markers investigated. namely thiobarbituric acid-reactive substance, carbonyl, superoxide dismutase, glutathione peroxidase, and catalase, were increased as soon as 2 h after muscle injury and remained increased up to 24 h. These alterations were prevented by LLLT at a 3 J/cm(2) dose given 2 h after the trauma. Similarly, LLLT prevented the trauma-induced proinflammatory state characterized by IL-6 and IL-10. In parallel, trauma-induced reduction in BDNF and VEGF, vascular remodeling and fiber-proliferating markers, was prevented by laser irradiation. In order to test whether the preventive effect of LLLT was also reflected in muscle functionality, we tested the locomotor activity, by measuring distance traveled and the number of rearings in the open field test. LLLT was effective in recovering the normal locomotion, indicating that the irradiation induced biostimulatory effects that accelerated or resolved the acute inflammatory response as well as the oxidant state elicited by the muscle trauma.
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Affiliation(s)
- Paulo Cesar Lock Silveira
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil ;,b Laboratório de Fisiologia e Bioquímica do Exercício - LaFiBe , Universidade do Extremo Sul Catarinense , Criciúma , Brazil
| | - Debora da Luz Scheffer
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Viviane Glaser
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Aline Pertile Remor
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Ricardo Aurino Pinho
- b Laboratório de Fisiologia e Bioquímica do Exercício - LaFiBe , Universidade do Extremo Sul Catarinense , Criciúma , Brazil
| | - Aderbal Silva Aguiar Junior
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Alexandra Latini
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
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41
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Schnyder S, Handschin C. Skeletal muscle as an endocrine organ: PGC-1α, myokines and exercise. Bone 2015; 80:115-125. [PMID: 26453501 PMCID: PMC4657151 DOI: 10.1016/j.bone.2015.02.008] [Citation(s) in RCA: 257] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 01/27/2015] [Accepted: 02/08/2015] [Indexed: 12/29/2022]
Abstract
An active lifestyle is crucial to maintain health into old age; inversely, sedentariness has been linked to an elevated risk for many chronic diseases. The discovery of myokines, hormones produced by skeletal muscle tissue, suggests the possibility that these might be molecular mediators of the whole body effects of exercise originating from contracting muscle fibers. Even though less is known about the sedentary state, the lack of contraction-induced myokines or the production of a distinct set of hormones in the inactive muscle could likewise contribute to pathological consequences in this context. In this review, we try to summarize the most recent developments in the study of muscle as an endocrine organ and speculate about the potential impact on our understanding of exercise and sedentary physiology, respectively. This article is part of a Special Issue entitled "Muscle Bone Interactions".
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Affiliation(s)
- Svenia Schnyder
- Biozentrum, Div. of Pharmacology/Neurobiology, University of Basel, Basel, Switzerland
| | - Christoph Handschin
- Biozentrum, Div. of Pharmacology/Neurobiology, University of Basel, Basel, Switzerland.
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42
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Eggers R, Tannemaat MR, De Winter F, Malessy MJA, Verhaagen J. Clinical and neurobiological advances in promoting regeneration of the ventral root avulsion lesion. Eur J Neurosci 2015; 43:318-35. [PMID: 26415525 DOI: 10.1111/ejn.13089] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/31/2015] [Accepted: 09/23/2015] [Indexed: 12/27/2022]
Abstract
Root avulsions due to traction to the brachial plexus causes complete and permanent loss of function. Until fairly recent, such lesions were considered impossible to repair. Here we review clinical repair strategies and current progress in experimental ventral root avulsion lesions. The current gold standard in patients with a root avulsion is nerve transfer, whereas reimplantation of the avulsed root into the spinal cord has been performed in a limited number of cases. These neurosurgical repair strategies have significant benefit for the patient but functional recovery remains incomplete. Developing new ways to improve the functional outcome of neurosurgical repair is therefore essential. In the laboratory, the molecular and cellular changes following ventral root avulsion and the efficacy of intervention strategies have been studied at the level of spinal motoneurons, the ventral spinal root and peripheral nerve, and the skeletal muscle. We present an overview of cell-based pharmacological and neurotrophic factor treatment approaches that have been applied in combination with surgical reimplantation. These interventions all demonstrate neuroprotective effects on avulsed motoneurons, often accompanied with various degrees of axonal regeneration. However, effects on survival are usually transient and robust axon regeneration over long distances has as yet not been achieved. Key future areas of research include finding ways to further extend the post-lesion survival period of motoneurons, the identification of neuron-intrinsic factors which can promote persistent and long-distance axon regeneration, and finally prolonging the pro-regenerative state of Schwann cells in the distal nerve.
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Affiliation(s)
- Ruben Eggers
- Laboratory for Neuroregeneration, Netherlands Institute for Neuroscience, Meibergdreef 47, 1105 BA, Amsterdam, the Netherlands
| | - Martijn R Tannemaat
- Laboratory for Neuroregeneration, Netherlands Institute for Neuroscience, Meibergdreef 47, 1105 BA, Amsterdam, the Netherlands.,Department of Neurology, Leiden University Medical Center, Leiden, the Netherlands
| | - Fred De Winter
- Laboratory for Neuroregeneration, Netherlands Institute for Neuroscience, Meibergdreef 47, 1105 BA, Amsterdam, the Netherlands.,Department of Neurosurgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Martijn J A Malessy
- Laboratory for Neuroregeneration, Netherlands Institute for Neuroscience, Meibergdreef 47, 1105 BA, Amsterdam, the Netherlands.,Department of Neurosurgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Joost Verhaagen
- Laboratory for Neuroregeneration, Netherlands Institute for Neuroscience, Meibergdreef 47, 1105 BA, Amsterdam, the Netherlands.,Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognition research, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
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43
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Han JH, Kim DO, Yi JW, Park SW, Kang WJ, Choi YK, Kim SH, Ko IG, Jin JJ, Kim SE, Kim CJ. Dexmedetomidine, α2-adrenoceptor agonist, does not induce apoptosis in the brachial plexus of rats. Anim Cells Syst (Seoul) 2014. [DOI: 10.1080/19768354.2014.983969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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44
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Martins LB, Duarte H, Ferreira AVM, Rocha NP, Teixeira AL, Domingues RB. Migraine is associated with altered levels of neurotrophins. Neurosci Lett 2014; 587:6-10. [PMID: 25524411 DOI: 10.1016/j.neulet.2014.12.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Revised: 11/24/2014] [Accepted: 12/04/2014] [Indexed: 12/18/2022]
Abstract
Neurotrophic factors have been implicated in hyperalgesia and peripheral levels of these molecules were altered in behavioral and neurological disorders. The objectives of this study were to assess neurotrophic factors levels in migraine patients in comparison with controls, and to investigate whether there was any association between them and clinical parameters. This was a cross-sectional study. We measured serum levels of neurotrophin family members - nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), neurotrophin 3 and 4/5 (NT3 and NT4/5) - and glial cell line-derived factor (GDNF) in patients suffering from migraine and matched controls. One hundred forty-one people were enrolled in this study, seventy-one were migraine patients and seventy were controls. Migraine patients showed more depressive and anxiety symptoms than control individuals as assessed, respectively, by the Beck Depression Inventory (BDI) and the Beck Anxiety Inventory. Chronic and episodic migraine patients showed higher NT4/5 levels than control individuals (P=0.001). Patients with chronic migraine had lower levels of BDNF that were not influenced by the presence of depressive symptoms (P=0.02). This is the first report to evaluate NT3 and NT-4/5 levels in migraine patients. Our findings suggest a possible role of neurotrophic factors in migraine pathophysiology.
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Affiliation(s)
- Laís B Martins
- Nursing School, Department of Nutrition, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Halina Duarte
- Neuroscience Program, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Adaliene V M Ferreira
- Nursing School, Department of Nutrition, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Natalia P Rocha
- Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Antônio Lucio Teixeira
- Neuroscience Program, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Interdisciplinary Laboratory of Medical Investigation, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Renan B Domingues
- Neuroscience Program, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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Papathanassoglou EDE, Miltiadous P, Karanikola MN. May BDNF Be Implicated in the Exercise-Mediated Regulation of Inflammation? Critical Review and Synthesis of Evidence. Biol Res Nurs 2014; 17:521-39. [DOI: 10.1177/1099800414555411] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Introduction: Exercise attenuates inflammation and enhances levels of brain-derived neurotrophic factor (BDNF). Exercise also enhances parasympathetic tone, although its role in activating the cholinergic anti-inflammatory pathway is unclear. The physiological pathways of exercise’s effect on inflammation are obscure. Aims: To critically review the evidence on the role of BDNF in the anti-inflammatory effects of exercise and its potential involvement in the cholinergic anti-inflammatory pathway. Methods: Critical literature review of studies published in MEDLINE, PubMed, CINAHL, Embase, and Cochrane databases. Results: BDNF is critically involved in the bidirectional signaling between immune and neurosensory cells and in the regulation of parasympathetic system responses. BDNF is also intricately involved in the inflammatory response: inflammation induces BDNF production, and, in turn, BDNF exerts pro- and/or anti-inflammatory effects. Although exercise modulates BDNF and its receptors in lymphocytes, data on BDNF’s immunoregulatory/anti-inflammatory effects in relation to exercise are scarce. Moreover, BDNF increases cholinergic activity and is modulated by parasympathetic system activation. However, its involvement in the cholinergic anti-inflammatory pathway has not been investigated. Conclusion: Converging lines of evidence implicate BDNF in exercise-mediated regulation of inflammation; however, data are insufficient to draw concrete conclusions. We suggest that there is a need to investigate BDNF as a potential modulator/mediator of the anti-inflammatory effects of exercise and of the cholinergic anti-inflammatory pathway during exercise. Such research would have implications for a wide range of inflammatory diseases and for planning targeted exercise protocols.
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46
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Song QX, Chermansky CJ, Birder LA, Li L, Damaser MS. Brain-derived neurotrophic factor in urinary continence and incontinence. Nat Rev Urol 2014; 11:579-88. [PMID: 25224451 DOI: 10.1038/nrurol.2014.244] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Urinary incontinence adversely affects quality of life and results in an increased financial burden for the elderly. Accumulating evidence suggests a connection between neurotrophins, such as brain-derived neurotrophic factor (BDNF), and lower urinary tract function, particularly with regard to normal physiological function and the pathophysiological mechanisms of stress urinary incontinence (SUI) and bladder pain syndrome/interstitial cystitis (BPS/IC). The interaction between BDNF and glutamate receptors affects both bladder and external urethral sphincter function during micturition. Clinical findings indicate reduced BDNF levels in antepartum and postpartum women, potentially correlating with postpartum SUI. Experiments with animal models demonstrate that BDNF is decreased after simulated childbirth injury, thereby impeding the recovery of injured nerves and the restoration of continence. Treatment with exogenous BDNF facilitates neural recovery and the restoration of continence. Serotonin and noradrenaline reuptake inhibitors, used to treat both depression and SUI, result in enhanced BDNF levels. Understanding the neurophysiological roles of BDNF in maintaining normal urinary function and in the pathogenesis of SUI and BPS/IC could lead to future therapies based on these mechanisms.
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Affiliation(s)
- Qi-Xiang Song
- Department of Urology, Changhai Hospital, Shanghai, PR China
| | - Christopher J Chermansky
- Department of Urology, University of Pittsburgh School of Medicine, 3550 Terrace Street, Pittsburgh, PA 15261, USA
| | - Lori A Birder
- Department of Medicine, University of Pittsburgh School of Medicine, 3550 Terrace Street, Pittsburgh, PA 15261, USA
| | - Longkun Li
- Department of Urology, Second Affiliated Hospital of TMMU, Chongqing, PR China
| | - Margot S Damaser
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue ND20, Cleveland, OH 44195, USA
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47
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Redirection of Neurite Outgrowth by Coupling Chondroitin Sulfate Proteoglycans to Polymer Membranes. Ann Biomed Eng 2014; 42:1271-81. [DOI: 10.1007/s10439-014-0991-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 02/19/2014] [Indexed: 12/14/2022]
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48
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Colombo E, Bedogni F, Lorenzetti I, Landsberger N, Previtali SC, Farina C. Autocrine and immune cell-derived BDNF in human skeletal muscle: implications for myogenesis and tissue regeneration. J Pathol 2013; 231:190-8. [PMID: 23775641 DOI: 10.1002/path.4228] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 06/05/2013] [Accepted: 06/11/2013] [Indexed: 01/03/2023]
Abstract
The neurotrophin system has a role in skeletal muscle biology. Conditional depletion of BDNF in mouse muscle precursor cells alters myogenesis and regeneration in vivo. However, the expression, localization and function of BDNF in human skeletal muscle tissue is not known, so the relevance of the rodent findings for human muscle are unknown. Here we address this by combining ex vivo histological investigations on human biopsies with in vitro analyses of human primary myocytes. We found that BDNF was expressed by precursor and differentiated cells both in vitro and in vivo. Differential analysis of BDNF receptors showed expression of p75NTR and not of TrkB in myocytes, suggesting that the BDNF-p75NTR axis is predominant in human skeletal muscle cells. Several in vitro functional experiments demonstrated that BDNF gene silencing or protein blockade in myoblast cultures hampered myogenesis. Finally, histological investigations of inflammatory myopathy biopsies revealed that infiltrating immune cells localized preferentially near p75NTR-positive regenerating fibres and that they produced BDNF. In conclusion, BDNF is an autocrine factor for skeletal muscle cells and may regulate human myogenesis. Furthermore, the preferential localization of BDNF-producing immune cells near p75NTR-positive regenerating myofibres suggests that immune cell-derived BDNF may sustain tissue repair in inflamed muscle.
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Affiliation(s)
- Emanuela Colombo
- Institute of Experimental Neurology (INSpe), Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
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49
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Gajewska-Woźniak O, Skup M, Kasicki S, Ziemlińska E, Czarkowska-Bauch J. Enhancing proprioceptive input to motoneurons differentially affects expression of neurotrophin 3 and brain-derived neurotrophic factor in rat hoffmann-reflex circuitry. PLoS One 2013; 8:e65937. [PMID: 23776573 PMCID: PMC3679030 DOI: 10.1371/journal.pone.0065937] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 04/30/2013] [Indexed: 11/18/2022] Open
Abstract
The importance of neurotrophin 3 (NT-3) for motor control prompted us to ask the question whether direct electrical stimulation of low-threshold muscle afferents, strengthening the proprioceptive signaling, could effectively increase the endogenous pool of this neurotrophin and its receptor TrkC in the Hoffmann-reflex (H-reflex) circuitry. The effects were compared with those of brain-derived neurotrophic factor (BDNF) and its TrkB receptor. Continuous bursts of stimuli were delivered unilaterally for seven days, 80 min daily, by means of a cuff-electrode implanted over the tibial nerve in awake rats. The H-reflex was recorded in the soleus muscle to control the strength of stimulation. Stimulation aimed at activation of Ia fibers produced a strong increase of NT-3 protein, measured with ELISA, in the lumbar L3-6 segments of the spinal cord and in the soleus muscle. This stimulation exerted much weaker effect on BDNF protein level which slightly increased only in L3-6 segments of the spinal cord. Increased protein level of NT-3 and BDNF corresponded to the changes of NT-3 mRNA and BDNF mRNA expression in L3-6 segments but not in the soleus muscle. We disclosed tissue-specificity of TrkC mRNA and TrkB mRNA responses. In the spinal cord TrkC and TrkB transcripts tended to decrease, whereas in the soleus muscle TrkB mRNA decreased and TrkC mRNA expression strongly increased, suggesting that stimulation of Ia fibers leads to sensitization of the soleus muscle to NT-3 signaling. The possibility of increasing NT-3/TrkC signaling in the neuromuscular system, with minor effects on BDNF/TrkB signaling, by means of low-threshold electrical stimulation of peripheral nerves, which in humans might be applied in non-invasive way, offers an attractive therapeutic tool.
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Affiliation(s)
- Olga Gajewska-Woźniak
- Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Małgorzata Skup
- Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland
- * E-mail: (JC-B); (MS)
| | - Stefan Kasicki
- Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Ewelina Ziemlińska
- Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Julita Czarkowska-Bauch
- Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland
- * E-mail: (JC-B); (MS)
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Gill BC, Damaser MS, Vasavada SP, Goldman HB. Stress incontinence in the era of regenerative medicine: reviewing the importance of the pudendal nerve. J Urol 2013; 190:22-8. [PMID: 23376143 DOI: 10.1016/j.juro.2013.01.082] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2013] [Indexed: 10/27/2022]
Abstract
PURPOSE Regenerative medicine will likely facilitate improved stress urinary incontinence treatment via the restoration of its neurogenic, myogenic and structural etiologies. Understanding these pathophysiologies and how each can optimally benefit from cellular, molecular and minimally invasive therapies will become necessary. While stem cells in sphincteric deficiency dominate the regenerative urology literature, little has been published on pudendal nerve regeneration or other regenerative targets. We discuss regenerative therapies for pudendal nerve injury in stress urinary incontinence. MATERIALS AND METHODS A PubMed® search for pudendal nerve combined individually with regeneration, injury, electrophysiology, measurement and activity produced a combined but nonindependent 621 results. English language articles were reviewed by title for relevance, which identified a combined but nonindependent 68 articles. A subsequent Google Scholar™ search and a review of the references of the articles obtained aided in broadening the discussion. RESULTS Electrophysiological studies have associated pudendal nerve dysfunction with stress urinary incontinence clinically and assessed pudendal nerve regeneration functionally, while animal models have provided physiological insight. Stem cell treatment has improved continence clinically, and ex vivo sphincteric bulk and muscle function gains have been noted in the laboratory. Stem cells, neurotrophic factors and electrical stimulation have benefited pudendal nerve regeneration in animal models. CONCLUSIONS Most regenerative studies to date have focused on stem cells restoring sphincteric function and bulk but whether a sphincter denervated by pudendal nerve injury will benefit is unclear. Pudendal nerve regeneration appears possible through minimally invasive therapies that show significant clinical potential. Treating poor central control and coordination of the neuromuscular continence mechanism remains another challenge.
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Affiliation(s)
- Bradley C Gill
- Glickman Urological and Kidney Institute and Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio 44195, USA
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