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Sundaram VK, Schütza V, Schröter NH, Backhaus A, Bilsing A, Joneck L, Seelbach A, Mutschler C, Gomez-Sanchez JA, Schäffner E, Sánchez EE, Akkermann D, Paul C, Schwagarus N, Müller S, Odle A, Childs G, Ewers D, Kungl T, Sitte M, Salinas G, Sereda MW, Nave KA, Schwab MH, Ost M, Arthur-Farraj P, Stassart RM, Fledrich R. Adipo-glial signaling mediates metabolic adaptation in peripheral nerve regeneration. Cell Metab 2023; 35:2136-2152.e9. [PMID: 37989315 PMCID: PMC10722468 DOI: 10.1016/j.cmet.2023.10.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 08/21/2023] [Accepted: 10/30/2023] [Indexed: 11/23/2023]
Abstract
The peripheral nervous system harbors a remarkable potential to regenerate after acute nerve trauma. Full functional recovery, however, is rare and critically depends on peripheral nerve Schwann cells that orchestrate breakdown and resynthesis of myelin and, at the same time, support axonal regrowth. How Schwann cells meet the high metabolic demand required for nerve repair remains poorly understood. We here report that nerve injury induces adipocyte to glial signaling and identify the adipokine leptin as an upstream regulator of glial metabolic adaptation in regeneration. Signal integration by leptin receptors in Schwann cells ensures efficient peripheral nerve repair by adjusting injury-specific catabolic processes in regenerating nerves, including myelin autophagy and mitochondrial respiration. Our findings propose a model according to which acute nerve injury triggers a therapeutically targetable intercellular crosstalk that modulates glial metabolism to provide sufficient energy for successful nerve repair.
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Affiliation(s)
- Venkat Krishnan Sundaram
- Institute of Anatomy, Leipzig University, Leipzig, Germany; Paul Flechsig Institute of Neuropathology, University Clinic Leipzig, Leipzig, Germany
| | - Vlad Schütza
- Institute of Anatomy, Leipzig University, Leipzig, Germany; Paul Flechsig Institute of Neuropathology, University Clinic Leipzig, Leipzig, Germany
| | | | - Aline Backhaus
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | - Annika Bilsing
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | - Lisa Joneck
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | - Anna Seelbach
- Paul Flechsig Institute of Neuropathology, University Clinic Leipzig, Leipzig, Germany
| | - Clara Mutschler
- John Van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0PY, UK
| | - Jose A Gomez-Sanchez
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain; Instituto de Neurociencias CSIC-UMH, San Juan de Alicante, Spain
| | - Erik Schäffner
- Paul Flechsig Institute of Neuropathology, University Clinic Leipzig, Leipzig, Germany
| | | | - Dagmar Akkermann
- Paul Flechsig Institute of Neuropathology, University Clinic Leipzig, Leipzig, Germany
| | - Christina Paul
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | - Nancy Schwagarus
- Paul Flechsig Institute of Neuropathology, University Clinic Leipzig, Leipzig, Germany
| | - Silvana Müller
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | - Angela Odle
- Instituto de Neurociencias CSIC-UMH, San Juan de Alicante, Spain
| | - Gwen Childs
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Markham, AR, USA
| | - David Ewers
- Max Planck Institute of Experimental Medicine, Göttingen, Germany; Klinik für Neurologie, Universitätsmedizin Göttingen (UMG), Göttingen, Germany
| | - Theresa Kungl
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | - Maren Sitte
- NGS-Integrative Genomics Core Unit (NIG), Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Gabriela Salinas
- NGS-Integrative Genomics Core Unit (NIG), Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Michael W Sereda
- Max Planck Institute of Experimental Medicine, Göttingen, Germany; Klinik für Neurologie, Universitätsmedizin Göttingen (UMG), Göttingen, Germany
| | - Klaus-Armin Nave
- Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Markus H Schwab
- Paul Flechsig Institute of Neuropathology, University Clinic Leipzig, Leipzig, Germany
| | - Mario Ost
- Institute of Anatomy, Leipzig University, Leipzig, Germany; Paul Flechsig Institute of Neuropathology, University Clinic Leipzig, Leipzig, Germany
| | - Peter Arthur-Farraj
- John Van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0PY, UK
| | - Ruth M Stassart
- Paul Flechsig Institute of Neuropathology, University Clinic Leipzig, Leipzig, Germany.
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Ku H, Kim Y, Kim AL, Lee G, Choi Y, Kim B. Protective Effects of Melatonin in High-Fat Diet-Induced Hepatic Steatosis via Decreased Intestinal Lipid Absorption and Hepatic Cholesterol Synthesis. Endocrinol Metab (Seoul) 2023; 38:557-567. [PMID: 37652870 PMCID: PMC10613779 DOI: 10.3803/enm.2023.1672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/11/2023] [Accepted: 07/27/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGRUOUND The preventative effect of melatonin on the development of obesity and the progression of fatty liver under a high-fat diet (HFD) has been well elucidated through previous studies. We investigated the mechanism behind this effect regarding cholesterol biosynthesis and regulation of cholesterol levels. METHODS Mice were divided into three groups: normal chow diet (NCD); HFD; and HFD and melatonin administration group (HFD+M). We assessed the serum lipid profile, mRNA expression levels of proteins involved in cholesterol synthesis and reabsorption in the liver and nutrient transporters in the intestines, and cytokine levels. Additionally, an in vitro experiment using HepG2 cells was performed. RESULTS Expression of hepatic sterol regulatory element-binding protein 2 (SREBP-2), 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR), and low-density lipoprotein receptor (LDLR) demonstrated that melatonin administration significantly reduces hepatic cholesterol synthesis in mice fed an HFD. Expression of intestinal sodium-glucose transporter 1 (SGLT1), glucose transporter 2 (GLUT2), GLUT5, and Niemann-pick C1-like 1 (NPC1L1) demonstrated that melatonin administration significantly reduces intestinal carbohydrate and lipid absorption in mice fed an HFD. There were no differences in local and circulatory inflammatory cytokine levels among the NCD, HFD, and HFD+M group. HepG2 cells stimulated with palmitate showed reduced levels of SREBP, LDLR, and HMGCR indicating these results are due to the direct mechanistic effect of melatonin on hepatocytes. CONCLUSION Collectively, these data indicate the mechanism behind the protective effects of melatonin from weight gain and liver steatosis under HFD is through a reduction in intestinal caloric absorption and hepatic cholesterol synthesis highlighting its potential in the treatment of obesity and fatty liver disease.
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Affiliation(s)
- Hyungjune Ku
- Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea
| | - Yeonji Kim
- Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea
| | - Alvin Lyle Kim
- Department of Surgery, Kosin University College of Medicine, Busan, Korea
| | - Garam Lee
- Department of Food Science and Nutrition, Pusan National University, Busan, Korea
| | - Youngsik Choi
- Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea
| | - Bukyung Kim
- Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea
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Onger ME, Altun G, Yildiran A. Pigment epithelium-derived factor enhances peripheral nerve regeneration through modulating oxidative stress and stem cells: An experimental study. Anat Rec (Hoboken) 2023; 306:2621-2635. [PMID: 36787348 DOI: 10.1002/ar.25177] [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: 08/15/2022] [Revised: 01/04/2023] [Accepted: 01/18/2023] [Indexed: 02/15/2023]
Abstract
Peripheral nerve injury is common and negatively affects an individual's quality of life. Drugs used for peripheral nerve regeneration should aim to eliminate symptoms such as neuropathic pain and have therapeutic effects. In recent studies, pigment epithelium-derived factor (PEDF) has been considered an essential therapeutic agent because of its potential neuroprotective properties. In this study, we aimed to investigate the efficacy of locally applied PEDF for peripheral nerve regeneration. Twenty-four Wistar albino male rats were used. The study groups included Injury (n = 12) and Injury+PEDF (n = 12). An injury model was created by applying 50 N pressure to the right sciatic nerves in groups, and 10 μg/kg local PEDF was injected into the Injury+PEDF group. After 28 days of recovery, functional tests and stereological, immunohistochemical, and biochemical analyses were performed. A significant difference was found between the Injury and Injury+PEDF groups in amplitude, whereas no difference was found in latency. The number of myelinated axons and the myelinated axon area increased significantly in the Injury+PEDF group, while no statistically significant difference was found in myelin sheath thickness. Superoxide dismutase, catalase, and glutathione peroxidase activities were increased by PEDF, whereas they were suppressed in mesenchymal stem cells. PEDF exerts functional, quantitative, and antioxidative effects on sciatic nerve injury during neuroregeneration. In addition, when oxidative stress parameters were examined, it was seen that PEDF reduced oxidative stress following sciatic nerve injury.
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Affiliation(s)
- Mehmet Emin Onger
- Department of Histology and Embryology, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey
- Department of Neuroscience, Health Science Institute, Ondokuz Mayıs University, Samsun, Turkey
| | - Gamze Altun
- Department of Histology and Embryology, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey
| | - Alisan Yildiran
- Department of Pediatrics, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey
- Department of Immunology, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey
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Kaplan AA, Önger ME, Kaplan S. THE EFFECTS OF CURCUMIN AND BLUEBERRY ON AXONAL REGENERATION AFTER PERIPHERAL NERVE INJURY. J Chem Neuroanat 2023; 130:102260. [PMID: 36965643 DOI: 10.1016/j.jchemneu.2023.102260] [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: 12/06/2022] [Revised: 03/17/2023] [Accepted: 03/22/2023] [Indexed: 03/27/2023]
Abstract
The purpose of this study was to analyze the axonal regeneration and therapeutic effects of curcumin and blueberry administration following peripheral nerve injury using stereological, electron microscopic and electrophysiological methods. Animals in were assigned into one of four groups - control (Cont), injury (Inj), injury+curcumin (Cur) and injury+blueberry (Blue). Following the induction of sciatic nerve crush injury (75 Newtons for 5sec) in the Inj, Cur, and Blue groups, the rats in the Cur group received intraperitoneal injection of 30mg/kg curcumin (Sigma C1386) and the rats in the Blue group received 4g/kg blueberry by gavage over a four-week period. The rats in the Cont and Inj groups were not exposed to any substance. All animals were given standard chow. Sciatic functional index analyses were performed on the 14th and 28th days after injury, and electromyography (EMG) results were recorded. Stereological analysis of the nerve was performed under light microscopy. Light and electron microscopies were used for the histopathological evaluation of the sciatic nerve. Analysis of myelinated axon numbers revealed no significant differences between the Inj group and the Cur and Blue groups. However, a significant difference was observed between the Blue and Inj groups in terms of axonal areas. EMG test results differed between the Blue and the Inj groups (p<0.05), but no significant difference was observed between the Inj and Cur groups. Electron microscopic analysis revealed protective effects of curcumin and blueberry treatment after injury. The use of the curcumin and blueberry may represent a supportive approach to the protection of nerve fibers after peripheral nerve crush injury.
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Affiliation(s)
- Arife Ahsen Kaplan
- Department of Histology and Embryology, Medicine Faculty, İstanbul Medipol University, İstanbul, Turkey
| | - Mehmet Emin Önger
- Department of Histology and Embryology, Medicine Faculty, Ondokuz Mayıs University, Samsun, Turkey
| | - Süleyman Kaplan
- Department of Histology and Embryology, Medicine Faculty, Ondokuz Mayıs University, Samsun, Turkey; Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania.
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Review of Drug Therapy for Peripheral Facial Nerve Regeneration That Can Be Used in Actual Clinical Practice. Biomedicines 2022; 10:biomedicines10071678. [PMID: 35884983 PMCID: PMC9313135 DOI: 10.3390/biomedicines10071678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 06/28/2022] [Accepted: 07/08/2022] [Indexed: 11/17/2022] Open
Abstract
Although facial nerve palsy is not a life-threatening disease, facial asymmetry affects interpersonal relationships, causes psychological stress, and devastates human life. The treatment and rehabilitation of facial paralysis has many socio-economic costs. Therefore, in cases of facial paralysis, it is necessary to identify the cause and provide the best treatment. However, until now, complete recovery has been difficult regardless of the treatment used in cases of complete paralysis of unknown cause and cutting injury of the facial nerve due to disease or accident. Therefore, this article aims to contribute to the future treatment of facial paralysis by reviewing studies on drugs that aid in nerve regeneration after peripheral nerve damage.
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Abushukur Y, Knackstedt R. The Impact of Supplements on Recovery After Peripheral Nerve Injury: A Review of the Literature. Cureus 2022; 14:e25135. [PMID: 35733475 PMCID: PMC9205410 DOI: 10.7759/cureus.25135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/19/2022] [Indexed: 11/25/2022] Open
Abstract
Peripheral nerve injury (PNI) can result from trauma, surgical resection, iatrogenic injury, and/or local anesthetic toxicity. Damage to peripheral nerves may result in debilitating weakness, numbness, paresthesia, pain, and/or autonomic instability. As PNI is associated with inflammation and nerve degeneration, means to mitigate this response could result in improved outcomes. Numerous nutrients have been investigated to prevent the negative sequelae of PNI. Alpha-lipoic acid, cytidine diphosphate-choline (CDP Choline), curcumin, melatonin, vitamin B12, and vitamin E have demonstrated notable success in improving recovery following PNI within animal models. While animal studies show ample evidence that various supplements may improve recovery after PNI, similar evidence in human patients is limited. The goal of this review is to analyze supplements that have been used successfully in animal models of PNI to serve as a reference for future studies on human patients. By analyzing supplements that have shown efficacy in animal studies, healthcare providers will have a resource from which to guide decision-making regarding future human studies investigating the role that supplements could play in PNI recovery. Ultimately, establishing a comprehensive understanding of these supplements in human patients following PNI may significantly improve post-surgical outcomes, quality of life, and peripheral nerve regeneration.
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Melatonin Attenuates Ropivacaine-Induced Apoptosis by Inhibiting Excessive Mitophagy Through the Parkin/PINK1 Pathway in PC12 and HT22 Cells. Inflammation 2022; 45:725-738. [PMID: 34994877 DOI: 10.1007/s10753-021-01579-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 10/07/2021] [Indexed: 11/05/2022]
Abstract
Melatonin, as an endogenous circadian indoleamine secreted by the pineal gland, executes extensive biological functions, including antioxidant, anti-inflammatory, anti-tumor, and neuroprotective effects. Although melatonin has been reported to serve as a potential therapeutic against many nerve injury diseases, its effect on ropivacaine-induced neurotoxicity remains obscure. Our research aimed to explore the impact and mechanism of melatonin on ropivacaine-induced neurotoxicity. Our results showed that melatonin pretreatment protected the cell viability, morphology, and apoptosis of PC12 and HT22 cells, and it also improved ropivacaine-induced mitochondrial dysfunction and the activation of mitophagy. In addition, we found that autophagy activation with rapamycin significantly weakened the protective effect of melatonin against ropivacaine-induced apoptosis, whereas autophagy inhibition with 3-MA enhanced the effect of melatonin. We also detected the activation of Parkin and PINK1, a canonical mechanism for mitophagy regulation, and results shown that melatonin downregulated the expression of Parkin and PINK1, and upregulated Tomm20 and COXIV proteins, so that those results indicated that melatonin protected ropivacaine-induced apoptosis through suppressing excessive mitophagy by inhibiting the Parkin/PINK1 pathway. Melatonin may be a useful potential therapeutic agent against ropivacaine-induced neurotoxicity.
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Zhang Z, Zhang M, Zhang Z, Sun Y, Wang J, Chang C, Zhu X, Li M, Liu Y. ADSCs Combined with Melatonin Promote Peripheral Nerve Regeneration through Autophagy. Int J Endocrinol 2022; 2022:5861553. [PMID: 35910940 PMCID: PMC9329031 DOI: 10.1155/2022/5861553] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 05/02/2022] [Accepted: 06/14/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND In the early stage of nerve injury, damaged tissue is cleared by autophagy. ADSCs can promote nerve axon regeneration. However, the microenvironment of the injury was changed, and ADSCs are easily apoptotic after transplantation. Mel plays a role in the apoptosis, proliferation, and differentiation of ADSCs. Therefore, we investigated whether Mel combined with ADSCs promoted peripheral nerve regeneration by enhancing early autophagy of injured nerves. MATERIALS AND METHODS SD rats were randomly split into the control group, model group, Mel group, ADSCs group, ADSCs + Mel group, and 3-MA group. On day 7, autophagy was observed and gait was detected on days 7, 14, 21, and 28. On the 28th day, the sciatic nerve of rats' renewal was detected. RESULTS After 1 w, compare with the model group, the number of autophagosomes and lysosomes and the expressions of protein of LC3-II/LC3-I and Beclin-1 in the ADSCs + Mel group were prominently increased, while the 3-MA group was significantly decreased. After 4 w, the function of the sciatic nerve in ADSCs + Mel was similar to that in the control group. Compared with the model group, the ADSCs + Mel group significantly increased myelin regeneration and the number of motor neurons and reduced gastrocnemius atrophy. CONCLUSIONS It was confirmed that ADSCs combined with Mel could promote sciatic nerve regeneration in rats by changing the early autophagy activity of the injured sciatic nerve.
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Affiliation(s)
- Ziqiang Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471000, China
| | - Mengyu Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471000, China
| | - Zhixiang Zhang
- College of Life Science, Yangtze University, Jingzhou, Hubei 434023, China
| | - Yingying Sun
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471000, China
| | - Jiajia Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471000, China
| | - Chenhao Chang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471000, China
| | - Xinyan Zhu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471000, China
| | - Monan Li
- School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, Henan 471000, China
| | - Yumei Liu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan 471000, China
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Souza NM, Gonçalves MF, Ferreira LFR, Bilal M, Iqbal HMN, Soriano RN. Revisiting the Role of Biologically Active Natural and Synthetic Compounds as an Intervention to Treat Injured Nerves. Mol Neurobiol 2021; 58:4980-4998. [PMID: 34228268 DOI: 10.1007/s12035-021-02473-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/24/2021] [Indexed: 02/08/2023]
Abstract
Traumatic lesions in nerves present high incidence and may culminate in sensorimotor and/or autonomic dysfunctions or a total loss of function, affecting the patient's quality of life. Although the microenvironment favors peripheral nerve regeneration, the regenerative process is not always successful. Some herbs, natural products, and synthetic drugs have been studied as potential pro-regenerative interventions. We reviewed and discussed the most recent articles published over the last ten years in high impact factor journals. Even though most of the articles contemplated in this review were in vitro and animal model studies, those with herbs showed promising results. Most of them presented antioxidant and anti-inflammatory effects. Drugs of several pharmacological classes also showed optimistic outcomes in nerve functional recovery, including clinical trials. The results are hopeful; however, mechanisms of action need to be elucidated, and there is a need for more high-quality clinical studies. The study presents careful compilation of findings of dozens of compounds with consistent pro-regenerative evidence published in respected scientific journals. It may be valuable for health professionals and researchers in the field.
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Affiliation(s)
- Natália Melo Souza
- Department of Medicine, Federal University of Juiz de Fora, Governador Valadares, Minas Gerais, 35032-620, Brazil
| | - Mateus Figueiredo Gonçalves
- Department of Medicine, Federal University of Juiz de Fora, Governador Valadares, Minas Gerais, 35032-620, Brazil
| | - Luiz Fernando Romanholo Ferreira
- Graduate Program in Process Engineering, Tiradentes University (UNIT), Av. Murilo Dantas, Aracaju Sergipe, Farolândia, 30049032-490, Brazil
- Institute of Technology and Research (ITP), Tiradentes University (UNIT), Av. Murilo Dantas, Aracaju-Sergipe, Farolândia, 30049032-490, Brazil
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, 64849, Monterrey, Mexico.
| | - Renato Nery Soriano
- Division of Physiology and Biophysics, Department of Basic Life Sciences, Federal University of Juiz de Fora, Governador Valadares, Minas Gerais, 35010-177, Brazil.
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A cross-species analysis of systemic mediators of repair and complex tissue regeneration. NPJ Regen Med 2021; 6:21. [PMID: 33795702 PMCID: PMC8016993 DOI: 10.1038/s41536-021-00130-6] [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: 09/10/2020] [Accepted: 03/04/2021] [Indexed: 02/01/2023] Open
Abstract
Regeneration is an elegant and complex process informed by both local and long-range signals. Many current studies on regeneration are largely limited to investigations of local modulators within a canonical cohort of model organisms. Enhanced genetic tools increasingly enable precise temporal and spatial perturbations within these model regenerators, and these have primarily been applied to cells within the local injury site. Meanwhile, many aspects of broader spatial regulators of regeneration have not yet been examined with the same level of scrutiny. Recent studies have shed important insight into the significant effects of environmental cues and circulating factors on the regenerative process. These observations highlight that consideration of more systemic and possibly more broadly acting cues will also be critical to fully understand complex tissue regeneration. In this review, we explore the ways in which systemic cues and circulating factors affect the initiation of regeneration, the regenerative process, and its outcome. As this is a broad topic, we conceptually divide the factors based on their initial input as either external cues (for example, starvation and light/dark cycle) or internal cues (for example, hormones); however, all of these inputs ultimately lead to internal responses. We consider studies performed in a diverse set of organisms, including vertebrates and invertebrates. Through analysis of systemic mediators of regeneration, we argue that increased investigation of these "systemic factors" could reveal novel insights that may pave the way for a diverse set of therapeutic avenues.
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Kanbur S, Sağir D. Effect of high sound wave on ovarian tissue: an experimental study. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1912640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Savaş Kanbur
- Department of Medical Services and Techniques, Health Services Vocational School, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - Dilek Sağir
- Department of Nursing, Faculty of Health Science, Sinop University, Sinop, Turkey
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Cankara FN, Günaydın C, Bilge SS, Özmen Ö, Kortholt A. The neuroprotective action of lenalidomide on rotenone model of Parkinson's Disease: Neurotrophic and supportive actions in the substantia nigra pars compacta. Neurosci Lett 2020; 738:135308. [PMID: 32932183 DOI: 10.1016/j.neulet.2020.135308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/06/2020] [Accepted: 08/12/2020] [Indexed: 01/13/2023]
Abstract
Lenalidomide is a centrally active thalidomide analog that has potent anti-inflammatory and antiangiogenic activities. Currently, it is primarily used in the treatment of multiple myeloma and myelodysplastic syndromes. However, recent studies have revealed in addition to neuroprotection and neuromodulation of lenalidomide. Because of this combination of inflammation and neuro-immunogenic properties, lenalidomide is considered as a high potential compound for the treatment of neurodegenerative diseases. Despite intensive research during the last decade, the role of neurotrophic elements in the effect of lenalidomide is still not well understood. Therefore, in the current study, the effects of lenalidomide on neurodegeneration were investigated in a rotenone model of Parkinson's disease (PD) rat model. The PD rat model was generated by rotenone injection into the substantia nigra pars compacta (SNpc). After validation of the PD model, the rats were treated with lenalidomide (100 mg/kg) for 28 days. Our data shows that lenalidomide alleviated rotenone-induced motor impairments and deficits in dopamine-related behaviors and resulted in increased levels of tumor necrosis factor-α and calcium-binding protein B in the SNpc. Moreover, chronic lenalidomide treatment resulted increase in transforming growth factor immunoreactivity and brain derived neurotrophic factor expression in the SNPc. In addition, chronic treatment mitigated tyrosine hydroxylase expression prevented the rotenone-induced decrease in dopamine levels, and consequently a decrease in caspase-3/9 immunoreactivity. This thus shows that chronic lenalidomide treatment improves neuronal survival. Together with our data demonstrate that lenalidomide, in addition to its anti-inflammatory and immunomodulatory actions, is also capable of increasing neurotrophic factors in the SNpc, thereby preventing rotenone-induced motor impairments.
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Affiliation(s)
- Fatma Nihan Cankara
- Department of Pharmacology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey; Innovative Technologies Application and Research Center, Suleyman Demirel University, Isparta, Turkey.
| | - Caner Günaydın
- Department of Pharmacology, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey.
| | - Süleyman Sırrı Bilge
- Department of Pharmacology, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey.
| | - Özlem Özmen
- Department of Pathology, Faculty of Veterinary Medicine, Mehmet Akif Ersoy University, Burdur, Turkey.
| | - Arjan Kortholt
- Department of Cell Biochemistry, Groningen Institute of Biomolecular Sciences & Biotechnology, University of Groningen, Groningen, The Netherlands; Innovative Technologies Application and Research Center, Suleyman Demirel University, Isparta, Turkey.
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Bilge SS, Günaydin C, Önger ME, Bozkurt A, Avci B. Neuroprotective action of agmatine in rotenone-induced model of Parkinson's disease: Role of BDNF/cREB and ERK pathway. Behav Brain Res 2020; 392:112692. [PMID: 32479847 DOI: 10.1016/j.bbr.2020.112692] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 04/14/2020] [Accepted: 05/03/2020] [Indexed: 01/10/2023]
Abstract
Numerous studies have investigated the role of agmatine in the central nervous system and indicated neuroprotective properties. In addition to its potent antioxidant effects, agmatine is an endogenous neuromodulator and has wide spectrum molecular actions on different receptor subtypes (NMDA, Imidazoline 1-2, alpha-2 adrenoreceptor, 5-HT2a, 5-HT3) and cellular signaling pathways (MAPK, PKA, NO, BDNF). Although the neuroprotective effects of agmatine demonstrated in experimental Parkinson's disease model, the effects of agmatine with the aspect of neuroplasticity and possible signaling mechanisms behind agmatine actions have not been investigated. Herein, in this study, we investigated the role of the of agmatine on rotenone-induced Parkinson's disease model. Agmatine at the dose of 100 mg/kg i.p., was mitigated oxidative damage and alleviated motor impairments which were the results of the rotenone insult. Additionally, agmatine decreased neuronal loss, tyrosine hydroxylase immunoreactivity and increased cREB, BDNF and ERK1/2 expression in the striatum, which are crucial neuroplasticity elements of striatal integrity. Taken together, the present study expands the knowledge of molecular mechanisms behind neuroprotective actions of agmatine in Parkinson's disease, and as far as we have known, this is the first study to delineate agmatine treated activation of cellular pathways which are important elements in neuronal cell survival.
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Affiliation(s)
- S Sırrı Bilge
- Ondokuz Mayıs University, School of Medicine, Department of Pharmacology, Samsun, Turkey.
| | - Caner Günaydin
- Ondokuz Mayıs University, School of Medicine, Department of Pharmacology, Samsun, Turkey.
| | - M Emin Önger
- Ondokuz Mayıs University, School of Medicine, Department of Histology and Embryology, Samsun, Turkey.
| | - Ayhan Bozkurt
- Ondokuz Mayıs University, School of Medicine, Department of Physiology, Samsun, Turkey.
| | - Bahattin Avci
- Ondokuz Mayıs University, School of Medicine, Department of Biochemistry, Samsun, Turkey.
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14
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Moharrami Kasmaie F, Jahromi Z, Gazor R, Zaminy A. Comparison of melatonin and curcumin effect at the light and dark periods on regeneration of sciatic nerve crush injury in rats. EXCLI JOURNAL 2019; 18:653-665. [PMID: 31611748 PMCID: PMC6785766 DOI: 10.17179/excli2019-1369] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 08/14/2019] [Indexed: 01/29/2023]
Abstract
Being one of the acute clinical problems, peripheral nerve injury can bring about a number of consequences including severe disability, reduced Quality of life (QOL) and immense costs. Currently, melatonin and curcumin are widely applied because of their immunomodulatory, anti-inflammatory, neuro-protective and antioxidant properties. The present study aims to compare the effects of melatonin and curcumin during light and dark periods on sciatic nerve crush injury repair. Accordingly, rats received IP injections of curcumin (100 mg/kg) and melatonin (10 mg/kg) over two periods of light (9:00 a.m.) and dark (9:00 p.m.) for 4 weeks. In order to evaluate rats, functional (walking track analysis and electrophysiological measurements), histomorphometric and gastrocnemius muscle mass investigations were administered. No statistically significant difference was identified between dark and light curcumin groups while curcumin groups displayed better results than did melatonin groups. In addition, dark melatonin group displayed better results than the light melatonin. On the whole, this study found that melatonin and curcumin can be used to quicken neural recovery and help treat nerve injury. It was also found that better neuroregeneration or nerve regeneration was induced when rats were treated by melatonin during the dark period while effects and injection time did not correlate in curcumin application.
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Affiliation(s)
| | - Zohreh Jahromi
- Student Research Committee, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Rouhollah Gazor
- Department of Anatomical Sciences, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Arash Zaminy
- Neuroscience Research Center, Guilan University of Medical Sciences, Rasht, Iran
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15
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Sağır D, Kuruoğlu E, Onger ME, Yarar E. The Effects of folic acid and topiramate on peripheral nerve regeneration. Biotech Histochem 2019; 95:105-112. [PMID: 31423848 DOI: 10.1080/10520295.2019.1637022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Peripheral nerve injury creates unusual sensitivity and pathological spontaneous activity in neurons that are described as ectopic discharge. Voltage dependent Na channels are responsible for ectopic discharge. Topiramate (TOP) inhibits voltage-gated sodium channels by blocking both the amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA)/kainate receptor and folic acid (FA) activity in neurotransmitter synthesis reactions. FA and TOP are anti-apoptotic agents by both phosphorylated-Akt (p-Akt) signaling activation and anti-inflammatory effects at the injury site. We investigated the effects of FA and TOP in peripheral nerve injury. We used rats with a sciatic nerve injury (SNI) treated with FA or TOP once daily for 6 weeks. Histological and electrophysiological tests were used to evaluate the morphology, and motor and sensory functions. Numbers of axons, myelin sheath thickness and axon area were measured using stereological techniques; functionality also was evaluated. Although FA exhibited a positive effect on regeneration by increasing the number of axons, we found no difference in axonal outgrowth or myelin sheath formation between the TOP and FA groups.
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Affiliation(s)
- D Sağır
- Department of Nursing, Health School, Sinop University, Sinop, Turkey
| | - E Kuruoğlu
- Department of Neurosurgery, Medical School, Ondokuz Mayıs University, Samsun, Turkey
| | - M E Onger
- Department of Histology and Embryology, Medical School, Ondokuz Mayıs University, Samsun, Turkey
| | - E Yarar
- Department of Neurosurgery, Bafra State Hospital, Samsun, Turkey
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16
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Abstract
Currently, there are no established adjuvant drugs for the acceleration of peripheral nerve regeneration. In this paper, we reviewed the literature from the last 10 years and described the drugs proved to accelerate the functional and histological regeneration of the peripheral nerves, either after trauma or in neuropathy experimental models. The vast majority of the studies were experimental with very few small clinical studies, which indicates the need for prospective randomized studies to identify the best drugs to use as adjuvants for nerve regeneration.
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Affiliation(s)
- Olimpiu Bota
- Department of Plastic and Hand Surgery, University Center of Orthopedics and Trauma Surgery, University Hospital Carl Gustav Carus , Dresden , Germany
| | - Lucian Fodor
- Department of Plastic Surgery, First Surgical Clinic, Emergency District Hospital , Cluj-Napoca , Romania
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17
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Kazak F, Yarim GF. Neuroprotective effects of acetyl- l -carnitine on lipopolysaccharide-induced neuroinflammation in mice: Involvement of brain-derived neurotrophic factor. Neurosci Lett 2017; 658:32-36. [DOI: 10.1016/j.neulet.2017.07.059] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 07/24/2017] [Accepted: 07/31/2017] [Indexed: 12/17/2022]
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18
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Onger ME, Kaplan S, Geuna S, Türkmen AP, Muratori L, Altun G, Altunkaynak BZ. Possible effects of some agents on the injured nerve in obese rats: A stereological and electron microscopic study. J Craniomaxillofac Surg 2017; 45:1258-1267. [DOI: 10.1016/j.jcms.2017.05.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 03/30/2017] [Accepted: 05/03/2017] [Indexed: 01/01/2023] Open
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