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Semkina AA, Alifirova VM, Titova MA, Maltseva AN, Abadzhyan MB. [Brain-derived neurotrophic factor in multiple sclerosis]. Zh Nevrol Psikhiatr Im S S Korsakova 2019; 119:28-35. [PMID: 31156238 DOI: 10.17116/jnevro20191192228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The review presents data on brain-derived neurotrophic factor (BDNF), its structure and functions, the effect on the pathogenesis of experimental autoimmune encephalomyelitis and multiple sclerosis (MS). The correlation of BDNF level with clinical manifestations of MS and the changes of its level during disease-modifying therapy is considered.
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Affiliation(s)
- A A Semkina
- Siberian State Medical University, Tomsk, Russia
| | | | - M A Titova
- Siberian State Medical University, Tomsk, Russia
| | - A N Maltseva
- Siberian State Medical University, Tomsk, Russia
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2
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Zemdegs J, Rainer Q, Grossmann CP, Rousseau-Ralliard D, Grynberg A, Ribeiro E, Guiard BP. Anxiolytic- and Antidepressant-Like Effects of Fish Oil-Enriched Diet in Brain-Derived Neurotrophic Factor Deficient Mice. Front Neurosci 2018; 12:974. [PMID: 30622454 PMCID: PMC6308198 DOI: 10.3389/fnins.2018.00974] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/05/2018] [Indexed: 12/29/2022] Open
Abstract
Despite significant advances in the understanding of the therapeutic activity of antidepressant drugs, treatment-resistant depression is a public health issue prompting research to identify new therapeutic strategies. Evidence strongly suggests that nutrition might exert a significant impact on the onset, the duration and the severity of major depression. Accordingly, preclinical and clinical investigations demonstrated the beneficial effects of omega-3 fatty acids in anxiety and mood disorders. Although the neurobiological substrates of its action remain poorly documented, basic research has shown that omega-3 increases brain-derived neurotrophic factor (BDNF) levels in brain regions associated with depression, as antidepressant drugs do. In contrast, low BDNF levels and hippocampal atrophy were observed in animal models of depression. In this context, the present study compared the effects of long-lasting fish oil-enriched diet, an important source of omega-3 fatty acids, between heterozygous BDNF+/- mice and their wild-type littermates. Our results demonstrated lower activation of Erk in BDNF+/- mice whereas this deficit was rescued by fish oil-enriched diet. In parallel, BDNF+/- mice displayed elevated hippocampal extracellular 5-HT levels in relation with a local decreased serotonin transporter protein level. Fish oil-enriched diet restored normal serotonergic tone by increasing the protein levels of serotonin transporter. At the cellular level, fish oil-enriched diet increased the pool of immature neurons in the dentate gyrus of BDNF+/- mice and the latter observations coincide with its ability to promote anxiolytic- and antidepressant-like response in these mutants. Collectively, our results demonstrate that the beneficial effects of long-term exposure to fish oil-enriched diet in behavioral paradigms known to recapitulate diverse abnormalities related to the depressive state specifically in mice with a partial loss of BDNF. These findings contrast with the mechanism of action of currently available antidepressant drugs for which the full manifestation of their therapeutic activity depends on the enhancement of serotoninergic and BDNF signaling. Further studies are warranted to determine whether fish oil supplementation could be used as an add-on strategy to conventional pharmacological interventions in treatment-resistant patients and relevant animal models.
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Affiliation(s)
- Juliane Zemdegs
- Department of Physiology, Discipline of Nutrition Physiology, Universidade Federal de São Paulo, São Paulo, Brazil.,Faculté de Pharmacie, Université Paris Sud, Université Paris-Saclay, Chatenay-Malabry, France.,Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Centre National de la Recherche Scientifique, Université de Toulouse, Toulouse, France
| | - Quentin Rainer
- Faculté de Pharmacie, Université Paris Sud, Université Paris-Saclay, Chatenay-Malabry, France
| | - Cindy P Grossmann
- Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Centre National de la Recherche Scientifique, Université de Toulouse, Toulouse, France
| | - Delphine Rousseau-Ralliard
- INRA, Unité Mixte de Recherche BDR, ENVA, Université Paris Saclay, Jouy-en-Josas, France.,INRA, Unité Mixte de Recherche 1154, Laboratoire Lipides Membranaires et Régulations Fonctionnelles du Coeur et des Vaisseaux, Jouy-en-Josas, France
| | - Alain Grynberg
- INRA, Unité Mixte de Recherche 1154, Laboratoire Lipides Membranaires et Régulations Fonctionnelles du Coeur et des Vaisseaux, Jouy-en-Josas, France
| | - Eliane Ribeiro
- Department of Physiology, Discipline of Nutrition Physiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Bruno P Guiard
- Faculté de Pharmacie, Université Paris Sud, Université Paris-Saclay, Chatenay-Malabry, France.,Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Centre National de la Recherche Scientifique, Université de Toulouse, Toulouse, France
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Gao J, Xiong B, Zhang B, Li S, Huang N, Zhan G, Jiang R, Yang L, Wu Y, Miao L, Zhu B, Yang C, Luo A. Sulforaphane Alleviates Lipopolysaccharide-induced Spatial Learning and Memory Dysfunction in Mice: The Role of BDNF-mTOR Signaling Pathway. Neuroscience 2018; 388:357-366. [PMID: 30086367 DOI: 10.1016/j.neuroscience.2018.07.052] [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] [Received: 06/01/2018] [Revised: 07/29/2018] [Accepted: 07/30/2018] [Indexed: 12/12/2022]
Abstract
Peripheral immune activation could cause neuroinflammation, leading to a series of central nervous system (CNS) disorders, such as spatial learning and memory dysfunction. However, its pathogenic mechanism and therapeutic strategies are not yet determined. The present study aimed to investigate the therapeutic effects of sulforaphane (SFN) on lipopolysaccharide (LPS)-induced spatial learning and memory dysfunction, and tried to elucidate its relationship with the role of hippocampal brain-derived neurotrophic factor (BDNF)-mammalian target of rapamycin (mTOR) signaling pathway. Intraperitoneal injection of LPS for consecutive 7 days to mice caused abnormal behaviors in Morris water maze test (MWMT), while systemic administration of SFN notably reversed the abnormal behaviors. In addition, hippocampal levels of inflammatory cytokines, synaptic proteins, BDNF-tropomyosin receptor kinase B (TrkB) and mTOR signaling pathways were altered in the processes of LPS-induced cognitive dysfunction and SFN's therapeutic effects. Furthermore, we found that ANA-12 (a TrkB inhibitor) or rapamycin (a mTOR inhibitor) could block the beneficial effects of SFN on LPS-induced cognitive dysfunction, and that hippocampal levels of synaptic proteins, BDNF-TrkB and mTOR signaling pathways were also notably changed. In conclusion, the results of the present study suggest that SFN could elicit improving effects on LPS-induced spatial learning and memory dysfunction, which is likely related to the regulation of hippocampal BDNF-mTOR signaling pathway.
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Affiliation(s)
- Jie Gao
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bingrui Xiong
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bo Zhang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shan Li
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Niannian Huang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Gaofeng Zhan
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Riyue Jiang
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Ling Yang
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yeshun Wu
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Liying Miao
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Bin Zhu
- Department of Internal Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Chun Yang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Ailin Luo
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Huang Y, Dreyfus CF. The role of growth factors as a therapeutic approach to demyelinating disease. Exp Neurol 2016; 283:531-40. [PMID: 27016070 PMCID: PMC5010931 DOI: 10.1016/j.expneurol.2016.02.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 02/19/2016] [Accepted: 02/24/2016] [Indexed: 01/19/2023]
Abstract
A variety of growth factors are being explored as therapeutic agents relevant to the axonal and oligodendroglial deficits that occur as a result of demyelinating lesions such as are evident in Multiple Sclerosis (MS). This review focuses on five such proteins that are present in the lesion site and impact oligodendrocyte regeneration. It then presents approaches that are being exploited to manipulate the lesion environment affiliated with multiple neurodegenerative diseases and suggests that the utility of these approaches can extend to demyelination. Challenges are to further understand the roles of specific growth factors on a cellular and tissue level. Emerging technologies can then be employed to optimize the use of growth factors to ameliorate the deficits associated with demyelinating degenerative diseases.
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Affiliation(s)
- Yangyang Huang
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, 683 Hoes Lane West, Piscataway, NJ 08854, USA.
| | - Cheryl F Dreyfus
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, 683 Hoes Lane West, Piscataway, NJ 08854, USA.
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Makar TK, Nimmagadda VKC, Trisler D, Bever CT. Cell-based delivery of brain-derived neurotrophic factor in experimental allergic encephalomyelitis. J Interferon Cytokine Res 2014; 34:641-7. [PMID: 24601738 DOI: 10.1089/jir.2013.0160] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is a pleiotropic cytokine with neuroprotective properties that has been identified as a potential therapeutic agent for diseases of the central nervous system (CNS). The use of BDNF has been limited by a short serum half-life and poor penetration of the blood-brain barrier. To address this limitation we have explored cell-based approaches to delivery. We have used experimental allergic encephalomyelitis (EAE), an inflammatory disease of the CNS, as a model system. We engineered hematopoietic stem cells to produce BDNF to determine the feasibility and effectiveness of cell-based delivery of BDNF into the CNS in EAE. We review those studies here.
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Affiliation(s)
- Tapas K Makar
- 1 Multiple Sclerosis Center of Excellence-East , Department of Veterans Affairs Maryland Health Care System, Baltimore, Maryland
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Fera F, Passamonti L, Cerasa A, Gioia MC, Liguori M, Manna I, Valentino P, Quattrone A. The BDNF Val66Met polymorphism has opposite effects on memory circuits of multiple sclerosis patients and controls. PLoS One 2013; 8:e61063. [PMID: 23593393 PMCID: PMC3623818 DOI: 10.1371/journal.pone.0061063] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 03/05/2013] [Indexed: 12/15/2022] Open
Abstract
Episodic memory deficits are frequent symptoms in Multiple Sclerosis and have been associated with dysfunctions of the hippocampus, a key region for learning. However, it is unclear whether genetic factors that influence neural plasticity modulate episodic memory in MS. We thus studied how the Brain Derived Neurotrophic Factor Val(66)Met genotype, a common polymorphism influencing the hippocampal function in healthy controls, impacted on brain networks underlying episodic memory in patients with Multiple Sclerosis. Functional magnetic resonance imaging was used to assess how the Brain Derived Neurotrophic Factor Val(66)Met polymorphism modulated brain regional activity and functional connectivity in 26 cognitively unimpaired Multiple Sclerosis patients and 25 age- and education-matched healthy controls while performing an episodic memory task that included encoding and retrieving visual scenes. We found a highly significant group by genotype interaction in the left posterior hippocampus, bilateral parahippocampus, and left posterior cingulate cortex. In particular, Multiple Sclerosis patients homozygous for the Val(66) allele, relative to Met(66) carriers, showed greater brain responses during both encoding and retrieval while the opposite was true for healthy controls. Furthermore, a robust group by genotype by task interaction was detected for the functional connectivity between the left posterior hippocampus and the ipsilateral posterior cingulate cortex. Here, greater hippocampus-posterior cingulate cortex connectivity was observed in Multiple Sclerosis Met(66) carriers relative to Val(66) homozygous during retrieval (but not encoding) while, again, the reverse was true for healthy controls. The Val(66)Met polymorphism has opposite effects on hippocampal circuitry underlying episodic memory in Multiple Sclerosis patients and healthy controls. Enhancing the knowledge of how genetic factors influence cognitive functions may improve the clinical management of memory deficits in patients with Multiple Sclerosis.
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Affiliation(s)
- Francesco Fera
- Università degli Studi “Magna Graecia”, Dipartimento di Scienze Mediche e Chirurgiche, Catanzaro, Italia
- * E-mail: (FF); (LP)
| | - Luca Passamonti
- Università degli Studi “Magna Graecia”, Dipartimento di Scienze Mediche e Chirurgiche, Catanzaro, Italia
- Consiglio Nazionale delle Ricerche, Unità di Ricerca Neuroimmagini, Catanzaro, Italia
- * E-mail: (FF); (LP)
| | - Antonio Cerasa
- Consiglio Nazionale delle Ricerche, Unità di Ricerca Neuroimmagini, Catanzaro, Italia
| | - Maria Cecilia Gioia
- Consiglio Nazionale delle Ricerche, Unità di Ricerca Neuroimmagini, Catanzaro, Italia
| | - Maria Liguori
- Consiglio Nazionale delle Ricerche, Istituto di Scienze Neurologiche, Mangone (CS), Italia
| | - Ida Manna
- Consiglio Nazionale delle Ricerche, Istituto di Scienze Neurologiche, Mangone (CS), Italia
| | - Paola Valentino
- Università degli Studi “Magna Graecia”, Dipartimento di Scienze Mediche e Chirurgiche, Catanzaro, Italia
| | - Aldo Quattrone
- Università degli Studi “Magna Graecia”, Dipartimento di Scienze Mediche e Chirurgiche, Catanzaro, Italia
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Brosnan CF, Raine CS. The astrocyte in multiple sclerosis revisited. Glia 2013; 61:453-65. [DOI: 10.1002/glia.22443] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Accepted: 10/02/2012] [Indexed: 12/18/2022]
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Lühder F, Gold R, Flügel A, Linker RA. Brain-derived neurotrophic factor in neuroimmunology: lessons learned from multiple sclerosis patients and experimental autoimmune encephalomyelitis models. Arch Immunol Ther Exp (Warsz) 2013; 61:95-105. [PMID: 23283517 DOI: 10.1007/s00005-012-0211-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Accepted: 12/20/2012] [Indexed: 02/07/2023]
Abstract
The concept of neuroprotective autoimmunity implies that immune cells, especially autoantigen-specific T cells, infiltrate the central nervous system (CNS) after injury and contribute to neuroregeneration and repair by secreting soluble factors. Amongst others, neurotrophic factors and neurotrophins such as brain-derived neurotropic factor (BDNF) are considered to play an important role in this process. New data raise the possibility that this concept could also be extended to neuroinflammatory diseases such as multiple sclerosis (MS) where autoantigen-specific T cells infiltrate the CNS, causing axonal/neuronal damage on the one hand, but also providing neuroprotective support on the other hand. In this review, we summarize the current knowledge on BDNF levels analyzed in MS patients in different compartments and its correlation with clinical parameters. Furthermore, new approaches in experimental animal models are discussed that attempt to decipher the functional relevance of BDNF in autoimmune demyelination.
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Affiliation(s)
- Fred Lühder
- Department of Neuroimmunology, Institute for Multiple Sclerosis Research and The Hertie Foundation, University Medical Center Göttingen, Waldweg 33, 37073 Göttingen, Germany.
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Hundgeburth LC, Wunsch M, Rovituso D, Recks MS, Addicks K, Lehmann PV, Kuerten S. The complement system contributes to the pathology of experimental autoimmune encephalomyelitis by triggering demyelination and modifying the antigen-specific T and B cell response. Clin Immunol 2012; 146:155-64. [PMID: 23352967 DOI: 10.1016/j.clim.2012.12.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 12/07/2012] [Accepted: 12/09/2012] [Indexed: 12/31/2022]
Abstract
So far, studies of the human autoimmune disease multiple sclerosis (MS) have largely been hampered by the absence of a pathogenic B cell component in its animal model, experimental autoimmune encephalomyelitis (EAE). To overcome this shortcoming, we have previously introduced the myelin basic protein (MBP)-proteolipid protein (PLP) MP4-induced EAE, which is B cell and autoantibody-dependent. Here we show that MP4-immunized wild-type C57BL/6 mice displayed a significantly lower disease incidence when their complement system was transiently depleted by a single injection of cobra venom factor (CVF) prior to immunization. Considering the underlying pathomechanism, our data suggest that the complement system is crucial for MP4-specific antibodies to trigger CNS pathology. Demyelinated lesions in the CNS were colocalized with complement depositions. In addition, B cell deficient JHT mice reconstituted with MP4-reactive serum showed significantly attenuated clinical and histological EAE after depletion of complement by CVF. The complement system was also critically involved in the generation of the MP4-specific T and B cell response: in MP4-immunized wild-type mice treated with CVF the MP4-specific cytokine and antibody response was significantly attenuated compared to untreated wild-type mice. Taken together, we propose two independent mechanisms by which the complement system can contribute to the pathology of autoimmune encephalomyelitis. Our data corroborate the role of complement in triggering antibody-dependent demyelination and antigen-specific T cell immunity and also provide first evidence that the complement system can modify the antigen-specific B cell response in EAE and possibly MS.
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Affiliation(s)
- Lorenz C Hundgeburth
- Department of Anatomy I, University of Cologne, Joseph-Stelzmann-Str. 9, 50931 Cologne, Germany.
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Wang YZ, Kou S, Gu LY, Zheng Q, Li M, Qi F, Zhao H, Wang L. Effects of Zuogui Pill () and Yougui Pill () on the expression of brain-derived neurotrophic factor and cyclic adenosine monophosphate/protein kinase A signaling transduction pathways of axonal regeneration in model rats with experimental autoimmune encephalomyelitis. Chin J Integr Med 2012; 20:24-30. [PMID: 23212569 DOI: 10.1007/s11655-012-1236-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2011] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To study the effects of Zuogui Pill (, ZGP) and Yougui Pill (, YGP) on the expressions of brain-derived neurotrophic factor (BDNF) and cyclic adenosine monophosphate (cAMP)/protein kinase A (PKA) signaling of axonal regeneration in the Lewis rats with experimental autoimmune encephalomyelitis (EAE), in order to explore the possible mechanism of ZGP and YGP on promoting axonal regeneration. METHODS The rats were randomly divided into normal control (NC), model (MO), prednisone acetate (PA), ZGP and YGP groups. The EAE model of rat was established by injecting antigen containing myelin basic protein (MBP)68-86. The brain and spinal cord were harvested on the 14th and 28th day post-immunization (PI), the protein and mRNA expression of BDNF and PKA in the brain and spinal cord of rats were detected by Western blot analysis and real-time quantitative polymerase chain reaction (PCR), and the cAMP levels were detected by using enzyme-immunoassay method. RESULTS (1) On the 28th day PI, the mRNA expression of BDNF in brain white matter and spinal cord of rats in ZGP and YGP groups were up-regulated, especially in YGP group (P<0.05 or P<0.01). (2) On the 14th day PI, the cAMP levels in brain white matters significantly increased in PA and YGP groups compared with MO group (P<0.05 or P<0.01), and the cAMP level in YGP group was higher than that in ZGP group (P<0.05). The cAMP level in spinal cord also significantly increased in YGP group compared with MO, PA and ZGP groups, respectively (P<0.01). (3) On the 14th day PI, the PKA expression in spinal cord of rats in ZGP group was significantly decreased compared with MO and YGP groups, respectively (P<0.05). (4) On the 28th day PI, there was a positive correlation between cAMP and PKA expression in the brain white matter of YGP rats. CONCLUSIONS The results suggest that ZGP and YGP may promote axonal regeneration by modulating cAMP/PKA signal transduction pathway, but the targets of molecular mechanism of ZGP may be different from those of YGP.
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Affiliation(s)
- Yi-zhou Wang
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China
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Colombo E, Cordiglieri C, Melli G, Newcombe J, Krumbholz M, Parada LF, Medico E, Hohlfeld R, Meinl E, Farina C. Stimulation of the neurotrophin receptor TrkB on astrocytes drives nitric oxide production and neurodegeneration. ACTA ACUST UNITED AC 2012; 209:521-35. [PMID: 22393127 PMCID: PMC3302220 DOI: 10.1084/jem.20110698] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Neurotrophin growth factors support neuronal survival and function. In this study, we show that the expression of the neurotrophin receptor TrkB is induced on astrocytes in white matter lesions in multiple sclerosis (MS) patients and mice with experimental autoimmune encephalomyelitis (EAE). Surprisingly, mice lacking TrkB specifically in astrocytes were protected from EAE-induced neurodegeneration. In an in vitro assay, astrocytes stimulated with the TrkB agonist brain-derived neurotrophic factor (BDNF) released nitric oxide (NO), and conditioned medium from activated astrocytes had detrimental effects on the morphology and survival of neurons. This neurodegenerative process was amplified by NO produced by neurons. NO synthesis in the central nervous system during EAE depended on astrocyte TrkB. Together, these findings suggest that TrkB expression on astrocytes may represent a new target for neuroprotective therapies in MS.
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Affiliation(s)
- Emanuela Colombo
- Institute of Experimental Neurology, San Raffaele Scientific Institute, 20132 Milan, Italy
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Lee DH, Geyer E, Flach AC, Jung K, Gold R, Flügel A, Linker RA, Lühder F. Central nervous system rather than immune cell-derived BDNF mediates axonal protective effects early in autoimmune demyelination. Acta Neuropathol 2012; 123:247-58. [PMID: 22009304 PMCID: PMC3259380 DOI: 10.1007/s00401-011-0890-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 10/10/2011] [Accepted: 10/10/2011] [Indexed: 01/29/2023]
Abstract
Brain-derived neurotrophic factor (BDNF) is involved in neuronal and glial development and survival. While neurons and astrocytes are its main cellular source in the central nervous system (CNS), bioactive BDNF is also expressed in immune cells and in lesions of multiple sclerosis and its animal model experimental autoimmune encephalomyelitis (EAE). Previous data revealed that BDNF exerts neuroprotective effects in myelin oligodendrocyte glycoprotein-induced EAE. Using a conditional knock-out model with inducible deletion of BDNF, we here show that clinical symptoms and structural damage are increased when BDNF is absent during the initiation phase of clinical EAE. In contrast, deletion of BDNF later in the disease course of EAE did not result in significant changes, either in the disease course or in axonal integrity. Bone marrow chimeras revealed that the deletion of BDNF in the CNS alone, with no deletion of BDNF in the infiltrating immune cells, was sufficient for the observed effects. Finally, the therapeutic effect of glatiramer acetate, a well-characterized disease-modifying drug with the potential to modulate BDNF expression, was partially reversed in mice in which BDNF was deleted shortly before the onset of disease. In summary, our data argue for an early window of therapeutic opportunity where modulation of BDNF may exert neuroprotective effects in experimental autoimmune demyelination.
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Affiliation(s)
- De-Hyung Lee
- Department of Neurology, Friedrich-Alexander University Erlangen, Schwabachanlage 6, 91054 Erlangen, Germany
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany
| | - Eva Geyer
- Department of Neuroimmunology, Institute for Multiple Sclerosis Research, and the Hertie Foundation, University Medical Center Göttingen, University of Göttingen, Waldweg 33, 37073 Göttingen, Germany
| | - Anne-Christine Flach
- Department of Neuroimmunology, Institute for Multiple Sclerosis Research, and the Hertie Foundation, University Medical Center Göttingen, University of Göttingen, Waldweg 33, 37073 Göttingen, Germany
| | - Klaus Jung
- Department of Medical Statistics, University Medical Centre Göttingen, Humboldallee 32, 37073 Göttingen, Germany
| | - Ralf Gold
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany
| | - Alexander Flügel
- Department of Neuroimmunology, Institute for Multiple Sclerosis Research, and the Hertie Foundation, University Medical Center Göttingen, University of Göttingen, Waldweg 33, 37073 Göttingen, Germany
| | - Ralf A. Linker
- Department of Neurology, Friedrich-Alexander University Erlangen, Schwabachanlage 6, 91054 Erlangen, Germany
- Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany
| | - Fred Lühder
- Department of Neuroimmunology, Institute for Multiple Sclerosis Research, and the Hertie Foundation, University Medical Center Göttingen, University of Göttingen, Waldweg 33, 37073 Göttingen, Germany
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Rottlaender A, Villwock H, Addicks K, Kuerten S. Neuroprotective role of fibroblast growth factor-2 in experimental autoimmune encephalomyelitis. Immunology 2011; 133:370-8. [PMID: 21564095 DOI: 10.1111/j.1365-2567.2011.03450.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The role of fibroblast growth factor-2 (FGF-2) in multiple sclerosis and its animal model experimental autoimmune encephalomyelitis is discussed. This study is the first to use FGF-2(-/-) mice to further address the involvement of FGF-2 in the disease process. We demonstrate that immunization with myelin oligodendrocyte glycoprotein peptide 35-55 induces more severe experimental autoimmune encephalomyelitis in FGF-2(-/-) mice compared with FGF-2(+/+) mice. The antigen-specific cytokine response to myelin oligodendrocyte glycoprotein peptide and the degree of central nervous system inflammation was similar in both groups. However, FGF-2(-/-) mice displayed increased infiltration of CD8(+) T cells and macrophages/microglia. In addition, nerve fibre degeneration and axonal loss were augmented, whereas the extent of remyelination in central nervous system lesions was reduced. FGF-2 has been associated with the induction of demyelination and the inhibition of myelin production by oligodendrocytes. Our study supports the opposing notion that FGF-2 can also assert a neuroprotective function. This may be particularly appealing when it comes to targeting the neurodegenerative aspect of multiple sclerosis.
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Teixeira AL, Barbosa IG, Diniz BS, Kummer A. Circulating levels of brain-derived neurotrophic factor: correlation with mood, cognition and motor function. Biomark Med 2011; 4:871-87. [PMID: 21133708 DOI: 10.2217/bmm.10.111] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is the most widely distributed neurotrophin in the CNS, where it plays several pivotal roles in synaptic plasticity and neuronal survival. As a consequence, BDNF has become a key target in the physiopathology of several neurological and psychiatric diseases. Recent studies have consistently reported altered levels of BDNF in the circulation (i.e., serum or plasma) of patients with major depression, bipolar disorder, Alzheimer's disease, Huntington's disease and Parkinson's disease. Correlations between serum BDNF levels and affective, cognitive and motor symptoms have also been described. BDNF appears to be an unspecific biomarker of neuropsychiatric disorders characterized by neurodegenerative changes.
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Affiliation(s)
- Antonio Lucio Teixeira
- Laboratório de Imunofarmacologia, Departamento de Bioquímica & Imunologia, Instituto de Ciências Biológicas, UFMG Avenue Antonio Carlos, 6627 - 31270-901 - Belo Horizonte, MG, Brazil.
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