1
|
Wang CS, McCarthy CI, Guzikowski NJ, Kavalali ET, Monteggia LM. Brain-derived neurotrophic factor scales presynaptic calcium transients to modulate excitatory neurotransmission. Proc Natl Acad Sci U S A 2024; 121:e2303664121. [PMID: 38621124 PMCID: PMC11047077 DOI: 10.1073/pnas.2303664121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 02/28/2024] [Indexed: 04/17/2024] Open
Abstract
Brain-derived neurotrophic factor (BDNF) plays a critical role in synaptic physiology, as well as mechanisms underlying various neuropsychiatric diseases and their treatment. Despite its clear physiological role and disease relevance, BDNF's function at the presynaptic terminal, a fundamental unit of neurotransmission, remains poorly understood. In this study, we evaluated single synapse dynamics using optical imaging techniques in hippocampal cell cultures. We find that exogenous BDNF selectively increases evoked excitatory neurotransmission without affecting spontaneous neurotransmission. However, acutely blocking endogenous BDNF has no effect on evoked or spontaneous release, demonstrating that different approaches to studying BDNF may yield different results. When we suppressed BDNF-Tropomyosin receptor kinase B (TrkB) activity chronically over a period of days to weeks using a mouse line enabling conditional knockout of TrkB, we found that evoked glutamate release was significantly decreased while spontaneous release remained unchanged. Moreover, chronic blockade of BDNF-TrkB activity selectively downscales evoked calcium transients without affecting spontaneous calcium events. Via pharmacological blockade by voltage-gated calcium channel (VGCC) selective blockers, we found that the changes in evoked calcium transients are mediated by the P/Q subtype of VGCCs. These results suggest that BDNF-TrkB activity increases presynaptic VGCC activity to selectively increase evoked glutamate release.
Collapse
Affiliation(s)
- Camille S. Wang
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN3729-7933
- Department of Pharmacology, Vanderbilt University, Nashville, TN37240-7933
| | - Clara I. McCarthy
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN3729-7933
- Department of Pharmacology, Vanderbilt University, Nashville, TN37240-7933
| | - Natalie J. Guzikowski
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN3729-7933
- Department of Pharmacology, Vanderbilt University, Nashville, TN37240-7933
| | - Ege T. Kavalali
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN3729-7933
- Department of Pharmacology, Vanderbilt University, Nashville, TN37240-7933
| | - Lisa M. Monteggia
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN3729-7933
- Department of Pharmacology, Vanderbilt University, Nashville, TN37240-7933
| |
Collapse
|
2
|
QIAO L, SHI Y, TAN L, JIANG Y, YANG Y. Efficacy of electroacupuncture stimulating Shenmen (HT7), Baihui (GV20), Sanyinjiao (SP6) on spatial learning and memory deficits in rats with insomnia induced by para-chlorophenylalanine: a single acupoint combined acupoints. J TRADIT CHIN MED 2023; 43:704-714. [PMID: 37454255 PMCID: PMC10320443 DOI: 10.19852/j.cnki.jtcm.20230308.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 08/03/2022] [Indexed: 07/18/2023]
Abstract
OBJECTIVE To investiage the effect of electroacupuncture (EA) at a single acupoint of Shenmen (HT7), Baihui (GV20), Sanyinjiao (SP6) and at combined acupoints of Shenmen (HT7) and Baihui (GV20) and Sanyinjiao (SP6) on the PKA/CREB and BDNF/TrkB signaling, as well as neuroapoptosis and neurogenesis in hippocampus and elucidate the underlying mechanism of single and combined acupoints on ameliorating spatial learning and memory deficits in a rat model of primary insomnia. METHODS Primary insomnia was modeled by intraperitoneal injection of para-chlorophenylalanine (PCPA) once daily for 2 d. EA was applied at Shenmen (HT7), Baihui (GV20), Sanyinjiao (SP6), or Shenmen (HT7) + Baihui (GV20) + Sanyinjiao (SP6) (combined) for 30 min daily for 4 d. Spatial learning and memory function was evaluated by the Morris water maze (MWM) test. Protein expressions of hippocampal cAMP-dependent protein kinase (PKA)-Cβ, phosphorylated cAMP-responsive element-binding protein (p-CREB), brain-derived neurotrophic factor (BDNF), and tyrosine kinase receptor B (TrkB) were evaluated by Western blotting. Neuronal apoptosis in the hippocampus was detected with the transferase-mediated dUTP-X nick end labeling assay. Endogenous neurogenesis was examined with bromodeoxyuridine staining. The MWM test and hippocampal p-CREB, BDNF, and TrkB protein levels in the combined acupoints group were evaluated after the administration of a PKA-selective inhibitor (H89). RESULTS Spatial learning and memory were significantly impaired in rats with insomnia. The spatial learning deficits were ameliorated in the Shenmen (HT7), Baihui (GV20), Sanyinjiao (SP6), and combined groups; this improvement was significantly greater in the combined group than the single acupoint groups. The spatial memory impairment was improved in the combined, Baihui (GV20), and Shenmen (HT7) groups, but not the Sanyinjiao (SP6) group. The expressions of PKA-Cβ, p-CREB, BDNF, and TrkB were decreased in rats with insomnia. All these proteins were significantly upregulated in the combined group. PKA/p-CREB protein levels were elevated in the Baihui (GV20) and Shenmen (HT7) groups, whereas BDNF/TrkB expression was upregulated in the Sanyinjiao (SP6) group. The staining results showed significant attenuation of hippocampal cell apoptosis and increased numbers of proliferating cells in the combined group, whereas the single acupoint groups only showed decreased numbers of apoptotic cells. In the combined group, the PKA inhibitor reversed the improvement of spatial memory and upregulation of p-CREB expression caused by EA, but did not affect its activation of BDNF/TrkB signaling. CONCLUSIONS EA at the single acupoints Baihui (GV20), Shenmen (HT7), or Sanyinjiao (SP6) had an ameliorating effect on the spatial learning and memory deficits induced by insomnia. EA at combined acupoints exerted a synergistic effect on the improvements in spatial learning and memory impairment in rats with insomnia by upregulating the hippocampal PKA/CREB and BDNF/TrkB signaling, facilitating neurogenesis, and inhibiting neuronal apoptosis. These findings indicate that EA at combined acupoints [(Baihui (GV20), Shenmen (HT7), and Sanyinjiao (SP6)] achieves a more pronounced regulation of hippocampal neuroplasticity than EA at single acupoints, which may partly explain the underlying mechanisms by which EA at combined acupoints exerts a better ameliorative effect on the cognitive dysfunction caused by insomnia.
Collapse
Affiliation(s)
- Lina QIAO
- 1 Department of Biochemistry and Molecular Biology, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing100700, China
| | - Yinan SHI
- 1 Department of Biochemistry and Molecular Biology, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing100700, China
| | - Lianhong TAN
- 1 Department of Biochemistry and Molecular Biology, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing100700, China
| | - Yanshu JIANG
- 2 College of Acupuncture-moxibustion and Massage, Changchun University of Traditional Chinese Medicine, Changchun 130117, China
| | - Yongsheng YANG
- 1 Department of Biochemistry and Molecular Biology, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing100700, China
| |
Collapse
|
3
|
Saral S, Topçu A, Alkanat M, Mercantepe T, Şahin Z, Akyıldız K, Karataş KS, Yıldız L, Tümkaya L, Yazıcı ZA. Agomelatine attenuates cisplatin-induced cognitive impairment via modulation of BDNF/TrkB signaling in rat hippocampus. J Chem Neuroanat 2023; 130:102269. [PMID: 37001681 DOI: 10.1016/j.jchemneu.2023.102269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023]
Abstract
Cisplatin is a drug used effectively in the treatment of malignant tumors. However, cisplatin has many side effects, including cognitive impairment. Agomelatine, a synthetic melatonin analogue, is an important antidepressant. Increasing evidence has shown that agomelatine may be a potential neuroprotective agent. The aim of this study was to investigate the effect of agomelatine on learning and memory functions in cisplatin-induced cognitive impairment in a rat model. Male rats were administered agomelatine and cisplatin for 4 weeks. Neurobehavioral tests were performed at the end of the 4th week. After behavioral tests, rats were euthanized and BDNF, TNF, IL-1β, MDA and GSH levels were measured in hippocampal homegenates by ELISA. In addition, nNOS and TrkB receptor activity were measured immunohistochemically. The results showed that agomelatine significantly improved cognitive functions in spatial memory tests in rats with cisplatin-induced cognitive impairment. In addition, agomelatine treatment positively affected the discrimination index (DI). On the other hand, agomelatine treatment elevated cisplatin-suppressed hippocampal BDNF levels. Agomelatine treatment reduced cisplatin-induced neuroinflammation by suppressing TNF and IL-1β levels. Similarly, agomelatine reduced oxidative stress in the hippocampus. Histological findings showed that agomelatine treatment reduced pyramidal neuron damage in hippocampal DG, CA1 and CA3. Cisplatin increased nNOS and TrkB positivity in DG, CA1 and CA3 neurons compared to control. In contrast, agomelatine treatment decreased both nNOS and TrkB positive scores. These findings indicate that agomelatine reduces cisplatin-related cognitive impairment by exerting anti-inflammatory action and possibly by the modulation of the BDNF/TrkB/nNOS pathways in the hippocampus.
Collapse
Affiliation(s)
- Sinan Saral
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Physiology, Rize, Turkey.
| | - Atilla Topçu
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Pharmacology, Rize, Turkey
| | - Mehmet Alkanat
- Giresun University, Faculty of Medicine, Department of Physiology, Giresun, Turkey
| | - Tolga Mercantepe
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Histology and Embryology, Rize, Turkey
| | - Zafer Şahin
- Karadeniz Technical University, Faculty of Medicine, Department of Physiology, Trabzon, Turkey
| | - Kerimali Akyıldız
- Recep Tayyip Erdogan University, School of Healh Care Services Vocational, Department of Medical Services and Techniques, Rize, Turkey
| | - Kader Semra Karataş
- Kutahya Health Sciences of University, Faculty of Medicine, Department of Mental Health and Diseases, Kütahya, Turkey
| | - Lamiye Yıldız
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Physiology, Rize, Turkey
| | - Levent Tümkaya
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Histology and Embryology, Rize, Turkey
| | - Zihni Açar Yazıcı
- Recep Tayyip Erdogan University, Faculty of Medicine, Department of Microbiology, Rize, Turkey
| |
Collapse
|
4
|
Simmons DA, Belichenko NP, Longo FM. Pharmacological Co-Activation of TrkB and TrkC Receptor Signaling Ameliorates Striatal Neuropathology and Motor Deficits in Mouse Models of Huntington's Disease. J Huntingtons Dis 2023; 12:215-239. [PMID: 37638447 DOI: 10.3233/jhd-230589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
BACKGROUND Loss of neurotrophic support in the striatum, particularly reduced brain-derived neurotrophic factor (BDNF) levels, contributes importantly to Huntington's disease (HD) pathogenesis. Another neurotrophin (NT), NT-3, is reduced in the cortex of HD patients; however, its role in HD is unknown. BDNF and NT-3 bind with high affinity to the tropomyosin receptor-kinases (Trk) B and TrkC, respectively. Targeting TrkB/TrkC may be an effective HD therapeutic strategy, as multiple links exist between their signaling pathways and HD degenerative mechanisms. We developed a small molecule ligand, LM22B-10, that activates TrkB and TrkC to promote cell survival. OBJECTIVE This study aimed to determine if upregulating TrkB/TrkC signaling with LM22B-10 would alleviate the HD phenotype in R6/2 and Q140 mice. METHODS LM22B-10 was delivered by concomitant intranasal-intraperitoneal routes to R6/2 and Q140 mice and then motor performance and striatal pathology were evaluated. RESULTS NT-3 levels, TrkB/TrkC phosphorylation, and AKT signaling were reduced in the R6/2 striatum; LM22B-10 counteracted these deficits. LM22B-10 also reduced intranuclear huntingtin aggregates, dendritic spine loss, microglial activation, and degeneration of dopamine- and cyclic AMP-regulated phosphoprotein with a molecular weight of 32 kDa (DARPP-32) and parvalbumin-containing neurons in the R6/2 and/or Q140 striatum. Moreover, both HD mouse models showed improved motor performance after LM22B-10 treatment. CONCLUSIONS These results reveal an NT-3/TrkC signaling deficiency in the striatum of R6/2 mice, support the idea that targeting TrkB/TrkC alleviates HD-related neurodegeneration and motor dysfunction, and suggest a novel, disease-modifying, multi-target strategy for treating HD.
Collapse
Affiliation(s)
- Danielle A Simmons
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Nadia P Belichenko
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Frank M Longo
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| |
Collapse
|
5
|
Costa RO, Martins LF, Tahiri E, Duarte CB. Brain-derived neurotrophic factor-induced regulation of RNA metabolism in neuronal development and synaptic plasticity. WILEY INTERDISCIPLINARY REVIEWS. RNA 2022; 13:e1713. [PMID: 35075821 DOI: 10.1002/wrna.1713] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/17/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
The neurotrophin brain-derived neurotrophic factor (BDNF) plays multiple roles in the nervous system, including in neuronal development, in long-term synaptic potentiation in different brain regions, and in neuronal survival. Alterations in these regulatory mechanisms account for several diseases of the nervous system. The synaptic effects of BDNF mediated by activation of tropomyosin receptor kinase B (TrkB) receptors are partly mediated by stimulation of local protein synthesis which is now considered a ubiquitous feature in both presynaptic and postsynaptic compartments of the neuron. The capacity to locally synthesize proteins is of great relevance at several neuronal developmental stages, including during neurite development, synapse formation, and stabilization. The available evidence shows that the effects of BDNF-TrkB signaling on local protein synthesis regulate the structure and function of the developing and mature synapses. While a large number of studies have illustrated a wide range of effects of BDNF on the postsynaptic proteome, a growing number of studies also point to presynaptic effects of the neurotrophin in the local regulation of the protein composition at the presynaptic level. Here, we will review the latest evidence on the role of BDNF in local protein synthesis, comparing the effects on the presynaptic and postsynaptic compartments. Additionally, we overview the relevance of BDNF-associated local protein synthesis in neuronal development and synaptic plasticity, at the presynaptic and postsynaptic compartments, and their relevance in terms of disease. This article is categorized under: RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications RNA Export and Localization > RNA Localization.
Collapse
Affiliation(s)
- Rui O Costa
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Luís F Martins
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
- Molecular Neurobiology Laboratory, Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Emanuel Tahiri
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Carlos B Duarte
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| |
Collapse
|
6
|
Ball JB, Green-Fulgham SM, Watkins LR. Mechanisms of Microglia-Mediated Synapse Turnover and Synaptogenesis. Prog Neurobiol 2022; 218:102336. [DOI: 10.1016/j.pneurobio.2022.102336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/30/2022] [Accepted: 08/02/2022] [Indexed: 10/31/2022]
|
7
|
Keifer J. Regulation of AMPAR trafficking in synaptic plasticity by BDNF and the impact of neurodegenerative disease. J Neurosci Res 2022; 100:979-991. [PMID: 35128708 DOI: 10.1002/jnr.25022] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 01/05/2022] [Accepted: 01/08/2022] [Indexed: 02/06/2023]
Abstract
Research demonstrates that the neural mechanisms underlying synaptic plasticity and learning and memory involve mobilization of AMPA-type neurotransmitter receptors at glutamatergic synaptic contacts, and that these mechanisms are targeted during neurodegenerative disease. Strengthening neural transmission occurs with insertion of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (AMPARs) into synapses while weakening results from receptor withdrawal. A key player in the trafficking of AMPARs during plasticity and learning is the brain-derived neurotrophic factor (BDNF) signaling system. BDNF is a neurotrophic factor that supports neuronal growth and is required for learning and memory. Significantly, a primary feature of many neurodegenerative diseases is a reduction in BDNF protein as well as disrupted neuronal surface expression of synaptic AMPARs. The resulting weakening of synaptic contacts leads to synapse loss and neuronal degeneration that underlies the cognitive impairment and dementia observed in patients with progressive neurodegenerative disease such as Alzheimer's. In the face of these data, one therapeutic approach is to increase BDNF bioavailability in brain. While this has been met with significant challenges, the results of the research have been promising. In spite of this, there are currently no clinical trials to test many of these findings on patients. Here, research showing that BDNF drives AMPARs to synapses, AMPAR trafficking is essential for synaptic plasticity and learning, and that neurodegenerative disease results in a significant decline in BDNF will be reviewed. The aim is to draw attention to the need for increasing patient-directed clinical studies to test the possible benefits of increasing levels of neurotrophins, specifically BDNF, to treat brain disorders. Much is known about the cellular mechanisms that underlie learning and memory in brain. It can be concluded that signaling by neurotrophins like BDNF and AMPA-type glutamate receptor synaptic trafficking are fundamental to these processes. Data from animal models and patients reveal that these mechanisms are adversely targeted during neurodegenerative disease and results in memory loss and cognitive decline. A brief summary of our understanding of these mechanisms indicates that it is time to apply this knowledge base directly to development of therapeutic treatments that enhance neurotrophins for brain disorders in patient populations.
Collapse
Affiliation(s)
- Joyce Keifer
- Neuroscience Group, Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, South Dakota, USA
| |
Collapse
|
8
|
Yamashita R, Takahashi Y, Takashima K, Okano H, Ojiro R, Tang Q, Kikuchi S, Kobayashi M, Ogawa B, Jin M, Kubota R, Ikarashi Y, Yoshida T, Shibutani M. Induction of cellular senescence as a late effect and BDNF-TrkB signaling-mediated ameliorating effect on disruption of hippocampal neurogenesis after developmental exposure to lead acetate in rats. Toxicology 2021; 456:152782. [PMID: 33862172 DOI: 10.1016/j.tox.2021.152782] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 03/24/2021] [Accepted: 04/11/2021] [Indexed: 12/27/2022]
Abstract
Lead (Pb) exposure causes cognitive deficits in children. The present study investigated the effect of developmental exposure to Pb acetate (PbAc) on postnatal hippocampal neurogenesis. Pregnant rats were administered drinking water containing 0, 2000, or 4000 ppm PbAc from gestational day 6 until day 21 post-delivery (weaning), and offspring were maintained without PbAc exposure until adulthood on postnatal day (PND) 77. There was a dose-related accumulation of Pb in the offspring brain at weaning, while Pb was mainly excreted in adulthood. In the hippocampus, metallothionein I/II immunoreactive (+) glia were increased through adulthood as a neuroprotective response to accumulated Pb, accompanied by increased astrocyte and microglia numbers in adulthood, suggesting sustained neural damage. Gene expression changes suggested elevated oxidative stress at weaning and suppression of the antioxidant system in adulthood, as well as continued neuroinflammatory responses. At weaning, granule cell apoptosis was increased and numbers of type-3 neural progenitor cells (NPCs) were decreased. By contrast, type-2a and type-2b NPCs were increased, suggesting suppressed differentiation to type-3 NPCs. In adulthood, there were increased numbers of immature granule cells. In the hilus of the dentate gyrus, somatostatin+ interneurons were increased at weaning, while calbindin-D-29K+ interneurons were increased throughout adulthood, suggesting a strengthened interneuron regulatory system against the suppressed differentiation at weaning. In the dentate gyrus, Bdnf, Ntrk2, and Chrna7 gene expression were upregulated and numbers of hilar TrkB+ interneurons increased at weaning. These findings suggest activation of BDNF-TrkB signaling to increase somatostatin+ interneurons and promote cholinergic signaling, thus increasing later production of immature granule cells. In adulthood, Pcna and Apex1 gene expression were downregulated and Chek1 and cyclin-dependent kinase inhibitor expression were upregulated. Furthermore, there was an increase in γ-H2AX+ SGZ cells, suggesting induction of cellular senescence of SGZ cells due to Pb genotoxicity.
Collapse
Affiliation(s)
- Risako Yamashita
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Yasunori Takahashi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Kazumi Takashima
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Hiromu Okano
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Ryota Ojiro
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Qian Tang
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Satomi Kikuchi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Mio Kobayashi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Bunichiro Ogawa
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Meilan Jin
- Laboratory of Veterinary Pathology, College of Veterinary Medicine, Southwest University, No. 2 Tiansheng Road, BeiBei District, Chongqing, 400715, PR China.
| | - Reiji Kubota
- Division of Environmental Chemistry, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-shi, Kawasaki-ku, Kanagawa, 210-9501, Japan.
| | - Yoshiaki Ikarashi
- Division of Environmental Chemistry, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-shi, Kawasaki-ku, Kanagawa, 210-9501, Japan.
| | - Toshinori Yoshida
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan; Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
| |
Collapse
|
9
|
Veschsanit N, Yang JL, Ngampramuan S, Viwatpinyo K, Pinyomahakul J, Lwin T, Chancharoen P, Rungruang S, Govitrapong P, Mukda S. Melatonin reverts methamphetamine-induced learning and memory impairments and hippocampal alterations in mice. Life Sci 2020; 265:118844. [PMID: 33278389 DOI: 10.1016/j.lfs.2020.118844] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 02/07/2023]
Abstract
AIMS Methamphetamine (METH) has become a major public health problem because of its abuse and profound neurotoxic effects, causing alterations in brain structure and function, and impairing cognitive functions, including attention, decision making, emotional memory, and working memory. This study aimed to determine whether melatonin (MEL), the circadian-control hormone, which has roles beyond circadian rhythm regulation, could restore METH-induced cognitive and neuronal impairment. MAIN METHODS Mice were treated with either METH (1 mg/kg) or saline for 7 days, followed by MEL (10 mg/kg) or saline for another 14 days. The Morris water maze (MWM) test was performed one day after the last saline or MEL injection. The hippocampal neuronal density, synaptic density, and receptors involved in learning and memory, along with downstream signaling molecules (NMDA receptor subunits GluN2A, GluN2B, and CaMKII) were investigated by immunoblotting. KEY FINDINGS METH administration significantly extended escape latency in learning phase and reduced the number of target crossings in memory test-phase as well as decreased the expression of BDNF, NMDA receptors, TrkB receptors, CaMKII, βIII tubulin, and synaptophysin. MEL treatment significantly ameliorated METH-induced increased escape latency, decreased the number of target crossings and decreased expression of BDNF, NMDA receptors, TrkB receptors, CaMKII, βIII tubulin and synaptophysin. SIGNIFICANCE METH administration impairs learning and memory in mice, and MEL administration restores METH-induced neuronal impairments which is probably through the changes in BDNF, NMDA receptors, TrkB receptors, CaMKII, βIII tubulin and synaptophysin. Therefore, MEL is potentially an innovative and promising treatment for learning and memory impairment of humans.
Collapse
Affiliation(s)
- Nisarath Veschsanit
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakornpathom 73170, Thailand
| | - Jenq-Lin Yang
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
| | - Sukonthar Ngampramuan
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakornpathom 73170, Thailand
| | - Kittikun Viwatpinyo
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakornpathom 73170, Thailand
| | - Jitrapa Pinyomahakul
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakornpathom 73170, Thailand
| | - Thit Lwin
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakornpathom 73170, Thailand; Department of Anatomy, Defence Services Medical Academy, Mingalardon, Yangon 11021, Myanmar
| | - Pongrung Chancharoen
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakornpathom 73170, Thailand; Faculty of Allied Health Sciences, Burapha University, Seansuk, Chonburi 20131, Thailand
| | - Saowalak Rungruang
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok 65000, Thailand
| | - Piyarat Govitrapong
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakornpathom 73170, Thailand; Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand; Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok 10210, Thailand
| | - Sujira Mukda
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakornpathom 73170, Thailand.
| |
Collapse
|
10
|
Griego E, Herrera-López G, Gómez-Lira G, Barrionuevo G, Gutiérrez R, Galván EJ. Functional expression of TrkB receptors on interneurones and pyramidal cells of area CA3 of the rat hippocampus. Neuropharmacology 2020; 182:108379. [PMID: 33130041 DOI: 10.1016/j.neuropharm.2020.108379] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/09/2020] [Accepted: 10/29/2020] [Indexed: 12/13/2022]
Abstract
The dentate gyrus and hippocampal area CA3 region of the mammalian brain contains the highest levels of brain-derived neurotrophic factor (BDNF) and its canonical membrane receptor, tropomyosin-related kinase B (TrkB). Therefore, the present study examines the expression and physiological responses triggered by activation of TrkB on hippocampal area CA3 interneurones and pyramidal cells of the rat hippocampus. Triple immunolabelling for TrkB, glutamate decarboxylase 67, and the calcium-binding proteins parvalbumin, calbindin or calretinin confirms the somatic expression of TrkB in all CA3 sublayers. TrkB-positive interneurones with fast-spiking discharge are restricted to strata oriens and lucidum, whereas regular-spiking interneurones are found in the strata lucidum, radiatum and lacunosum-moleculare. Activation of TrkB receptors with 7,8-dihydroxyflavone (DHF) modulates amplitude and frequency of spontaneous synaptic currents recorded from CA3 interneurones. Furthermore, the isolated excitatory postsynaptic currents (EPSC) of CA3 interneurones evoked by the mossy fibres (MF) or commissural/associational (C/A) axons, show input-specific synaptic potentiation in response to TrkB stimulation. On CA3 pyramidal cells, stimulation with DHF potentiates the MF synaptic transmission and increases the MF-EPSP - spike coupling. The latter exhibits a dramatic increase when picrotoxin is bath perfused after DHF, indicating that local interneurones restrain the excitability mediated by activation of TrkB. Therefore, we propose that release of BDNF on area CA3 reshapes the output of this hippocampal region by simultaneous activation of TrkB on GABAergic interneurones and pyramidal cells.
Collapse
Affiliation(s)
- Ernesto Griego
- Departamento de Farmacobiología, Cinvestav Sur, México City, México
| | | | | | - Germán Barrionuevo
- Department of Neuroscience, University of Pittsburgh, Pittsburgh, PA, 15260, United States
| | - Rafael Gutiérrez
- Departamento de Farmacobiología, Cinvestav Sur, México City, México
| | - Emilio J Galván
- Departamento de Farmacobiología, Cinvestav Sur, México City, México.
| |
Collapse
|
11
|
Johnstone A, Mobley W. Local TrkB signaling: themes in development and neural plasticity. Cell Tissue Res 2020; 382:101-111. [DOI: 10.1007/s00441-020-03278-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 08/10/2020] [Indexed: 02/08/2023]
|
12
|
Badurek S, Griguoli M, Asif-Malik A, Zonta B, Guo F, Middei S, Lagostena L, Jurado-Parras MT, Gillingwater TH, Gruart A, Delgado-García JM, Cherubini E, Minichiello L. Immature Dentate Granule Cells Require Ntrk2/Trkb for the Formation of Functional Hippocampal Circuitry. iScience 2020; 23:101078. [PMID: 32361506 PMCID: PMC7200316 DOI: 10.1016/j.isci.2020.101078] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/23/2020] [Accepted: 04/14/2020] [Indexed: 01/14/2023] Open
Abstract
Early in brain development, impaired neuronal signaling during time-sensitive windows triggers the onset of neurodevelopmental disorders. GABA, through its depolarizing and excitatory actions, drives early developmental events including neuronal circuit formation and refinement. BDNF/TrkB signaling cooperates with GABA actions. How these developmental processes influence the formation of neural circuits and affect adult brain function is unknown. Here, we show that early deletion of Ntrk2/Trkb from immature mouse hippocampal dentate granule cells (DGCs) affects the integration and maturation of newly formed DGCs in the hippocampal circuitry and drives a premature shift from depolarizing to hyperpolarizing GABAergic actions in the target of DGCs, the CA3 principal cells of the hippocampus, by reducing the expression of the cation-chloride importer Nkcc1. These changes lead to the disruption of early synchronized neuronal activity at the network level and impaired morphological maturation of CA3 pyramidal neurons, ultimately contributing to altered adult hippocampal synaptic plasticity and cognitive processes.
Collapse
Affiliation(s)
- Sylvia Badurek
- Centre for Neuroregeneration, University of Edinburgh, Edinburgh, United Kingdom; European Molecular Biology Laboratory, Mouse Biology Unit, Monterotondo, Rome, Italy
| | | | - Aman Asif-Malik
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
| | - Barbara Zonta
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
| | - Fei Guo
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
| | - Silvia Middei
- Institute of Cell Biology and Neurobiology, National Research Council, Monterotondo, Rome, Italy
| | - Laura Lagostena
- International School for Advanced Studies (SISSA), Department of Neuroscience, Trieste, Italy
| | | | - Thomas H Gillingwater
- Biomedical Sciences, Edinburgh Medical School, University of Edinburgh, Edinburgh, United Kingdom
| | - Agnès Gruart
- Division of Neurosciences, University Pablo de Olavide, Seville, Spain
| | | | - Enrico Cherubini
- European Brain Research Institute, Rome, Italy; International School for Advanced Studies (SISSA), Department of Neuroscience, Trieste, Italy
| | - Liliana Minichiello
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom; Centre for Neuroregeneration, University of Edinburgh, Edinburgh, United Kingdom; European Molecular Biology Laboratory, Mouse Biology Unit, Monterotondo, Rome, Italy.
| |
Collapse
|
13
|
Niculescu D, Michaelsen-Preusse K, Güner Ü, van Dorland R, Wierenga CJ, Lohmann C. A BDNF-Mediated Push-Pull Plasticity Mechanism for Synaptic Clustering. Cell Rep 2020; 24:2063-2074. [PMID: 30134168 DOI: 10.1016/j.celrep.2018.07.073] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 06/12/2018] [Accepted: 07/23/2018] [Indexed: 01/09/2023] Open
Abstract
During development, activity-dependent synaptic plasticity refines neuronal networks with high precision. For example, spontaneous activity helps sorting synaptic inputs with similar activity patterns into clusters to enhance neuronal computations in the mature brain. Here, we show that TrkB activation and postsynaptic brain-derived neurotrophic factor (BDNF) are required for synaptic clustering in developing hippocampal neurons. Moreover, BDNF and TrkB modulate transmission at synapses depending on their clustering state, indicating that endogenous BDNF/TrkB signaling stabilizes locally synchronized synapses. Together with our previous data on proBDNF/p75NTR signaling, these findings suggest a push-pull plasticity mechanism for synaptic clustering: BDNF stabilizes clustered synapses while proBDNF downregulates out-of-sync synapses. This idea is supported by our observation that synaptic clustering requires matrix-metalloproteinase-9 activity, a proBDNF-to-BDNF converting enzyme. Finally, NMDA receptor activation mediates out-of-sync depression upstream of proBDNF signaling. Together, these data delineate an efficient plasticity mechanism where proBDNF and mature BDNF establish synaptic clustering through antagonistic modulation of synaptic transmission.
Collapse
Affiliation(s)
- Dragos Niculescu
- Department of Synapse and Network Development, Netherlands Institute for Neuroscience, 1105 Amsterdam, the Netherlands; Department of Neurogenesis and Circuit Development, Vision Institute, 75012 Paris, France
| | - Kristin Michaelsen-Preusse
- Department of Synapse and Network Development, Netherlands Institute for Neuroscience, 1105 Amsterdam, the Netherlands
| | - Ülkü Güner
- Department of Synapse and Network Development, Netherlands Institute for Neuroscience, 1105 Amsterdam, the Netherlands
| | - René van Dorland
- Department of Biology, Faculty of Science, Utrecht University, 3584 Utrecht, the Netherlands
| | - Corette J Wierenga
- Department of Biology, Faculty of Science, Utrecht University, 3584 Utrecht, the Netherlands
| | - Christian Lohmann
- Department of Synapse and Network Development, Netherlands Institute for Neuroscience, 1105 Amsterdam, the Netherlands; Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, VU University, Amsterdam, the Netherlands.
| |
Collapse
|
14
|
SIPA1L2 controls trafficking and local signaling of TrkB-containing amphisomes at presynaptic terminals. Nat Commun 2019; 10:5448. [PMID: 31784514 PMCID: PMC6884526 DOI: 10.1038/s41467-019-13224-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 10/28/2019] [Indexed: 12/31/2022] Open
Abstract
Amphisomes are organelles of the autophagy pathway that result from the fusion of autophagosomes with late endosomes. While biogenesis of autophagosomes and late endosomes occurs continuously at axon terminals, non-degradative roles of autophagy at boutons are barely described. Here, we show that in neurons BDNF/TrkB traffick in amphisomes that signal locally at presynaptic boutons during retrograde transport to the soma. This is orchestrated by the Rap GTPase-activating (RapGAP) protein SIPA1L2, which connects TrkB amphisomes to a dynein motor. The autophagosomal protein LC3 regulates RapGAP activity of SIPA1L2 and controls retrograde trafficking and local signaling of TrkB. Following induction of presynaptic plasticity, amphisomes dissociate from dynein at boutons enabling local signaling and promoting transmitter release. Accordingly, sipa1l2 knockout mice show impaired BDNF-dependent presynaptic plasticity. Taken together, the data suggest that in hippocampal neurons, TrkB-signaling endosomes are in fact amphisomes that during retrograde transport have local signaling capacity in the context of presynaptic plasticity. There is growing evidence that autophagy might serve specialized functions in neurons besides its role in protein homeostasis. In this study, authors demonstrate that axonal retrograde transport of BDNF/TrkB in neuronal amphisomes is involved in plasticity-relevant local signaling at presynaptic boutons and that SIPA1L2, a member of the SIPA1L family of neuronal RapGAPs, associates via LC3b to TrkB-containing amphisomes to regulate its motility and signaling at the axon terminals
Collapse
|
15
|
Charkviani M, Muradashvili N, Lominadze D. Vascular and non-vascular contributors to memory reduction during traumatic brain injury. Eur J Neurosci 2019; 50:2860-2876. [PMID: 30793398 PMCID: PMC6703968 DOI: 10.1111/ejn.14390] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 01/09/2023]
Abstract
Traumatic brain injury (TBI) is an increasing health problem. It is a complex, progressive disease that consists of many factors affecting memory. Studies have shown that increased blood-brain barrier (BBB) permeability initiates pathological changes in neuro-vascular network but the role of cerebrovascular dysfunction and its mediated mechanisms associated with memory reduction during TBI are still not well understood. Changes in BBB, inflammation, extravasation of blood plasma components, activation of neuroglia lead to neurodegeneration. Extravasated proteins such as amyloid-beta, fibrinogen, and cellular prion protein may form degradation resistant complexes that can lead to neuronal dysfunction and degeneration. They also have the ability to activate astrocytes, and thus, can be involved in memory impairment. Understanding the triggering mechanisms and the places they originate in vasculature or in extravascular tissue may help to identify potential therapeutic targets to ameliorate memory reduction during TBI. The goal of this review is to discuss conceptual mechanisms that lead to short-term memory reduction during non-severe TBI considering distinction between vascular and non-vascular effects on neurons. Some aspects of these mechanisms need to be confirmed further. Therefore, we hope that the discussion presented bellow may lead to experiments that may clarify the triggering mechanisms of memory reduction after head trauma.
Collapse
Affiliation(s)
- Mariam Charkviani
- Department of Physiology, University of Louisville, School of Medicine, Louisville, KY, USA
| | - Nino Muradashvili
- Department of Physiology, University of Louisville, School of Medicine, Louisville, KY, USA
- Department of Basic Medicine, Caucasus International University, Tbilisi, Georgia
| | - David Lominadze
- Department of Physiology, University of Louisville, School of Medicine, Louisville, KY, USA
- Kentucky Spinal Cord Research Center, University of Louisville, School of Medicine, Louisville, KY, USA
| |
Collapse
|
16
|
De Vincenti AP, Ríos AS, Paratcha G, Ledda F. Mechanisms That Modulate and Diversify BDNF Functions: Implications for Hippocampal Synaptic Plasticity. Front Cell Neurosci 2019; 13:135. [PMID: 31024262 PMCID: PMC6465932 DOI: 10.3389/fncel.2019.00135] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/19/2019] [Indexed: 11/16/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is a neurotrophin that has pleiotropic effects on neuronal morphology and synaptic plasticity that underlie hippocampal circuit development and cognition. Recent advances established that BDNF function is controlled and diversified by molecular and cellular mechanisms including trafficking and subcellular compartmentalization of different Bdnf mRNA species, pre- vs. postsynaptic release of BDNF, control of BDNF signaling by tropomyosin receptor kinase B (TrkB) receptor interactors and conversion of pro-BDNF to mature BDNF and BDNF-propeptide. Defects in these regulatory mechanisms affect dendritic spine formation and morphology of pyramidal neurons as well as synaptic integration of newborn granule cells (GCs) into preexisting circuits of mature hippocampus, compromising the cognitive function. Here, we review recent findings describing novel dynamic mechanisms that diversify and locally control the function of BDNF in hippocampal neurons.
Collapse
Affiliation(s)
- Ana Paula De Vincenti
- División de Neurociencia Molecular y Celular, Instituto de Biología Celular y Neurociencias, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Antonella S Ríos
- División de Neurociencia Molecular y Celular, Instituto de Biología Celular y Neurociencias, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina.,Fundación Instituto Leloir, Instituto de Investigaciones Bioquímicas de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Gustavo Paratcha
- División de Neurociencia Molecular y Celular, Instituto de Biología Celular y Neurociencias, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Fernanda Ledda
- División de Neurociencia Molecular y Celular, Instituto de Biología Celular y Neurociencias, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina.,Fundación Instituto Leloir, Instituto de Investigaciones Bioquímicas de Buenos Aires, CONICET, Buenos Aires, Argentina
| |
Collapse
|
17
|
Effect of Acute Stress on the Expression of BDNF, trkB, and PSA-NCAM in the Hippocampus of the Roman Rats: A Genetic Model of Vulnerability/Resistance to Stress-Induced Depression. Int J Mol Sci 2018; 19:ijms19123745. [PMID: 30477252 PMCID: PMC6320970 DOI: 10.3390/ijms19123745] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 12/22/2022] Open
Abstract
The Roman High-Avoidance (RHA) and the Roman Low-Avoidance (RLA) rats, represent two psychogenetically-selected lines that are, respectively, resistant and prone to displaying depression-like behavior, induced by stressors. In the view of the key role played by the neurotrophic factors and neuronal plasticity, in the pathophysiology of depression, we aimed at assessing the effects of acute stress, i.e., forced swimming (FS), on the expression of brain-derived neurotrophic factor (BDNF), its trkB receptor, and the Polysialilated-Neural Cell Adhesion Molecule (PSA-NCAM), in the dorsal (dHC) and ventral (vHC) hippocampus of the RHA and the RLA rats, by means of western blot and immunohistochemical assays. A 15 min session of FS elicited different changes in the expression of BDNF in the dHC and the vHC. In RLA rats, an increment in the CA2 and CA3 subfields of the dHC, and a decrease in the CA1 and CA3 subfields and the dentate gyrus (DG) of the vHC, was observed. On the other hand, in the RHA rats, no significant changes in the BDNF levels was seen in the dHC and there was a decrease in the CA1, CA3, and DG of the vHC. Line-related changes were also observed in the expression of trkB and PSA-NCAM. The results are consistent with the hypothesis that the differences in the BDNF/trkB signaling and neuroplastic mechanisms are involved in the susceptibility of RLA rats and resistance of RHA rats to stress-induced depression.
Collapse
|
18
|
Selvam R, Yeh ML, Levine ES. Endogenous cannabinoids mediate the effect of BDNF at CA1 inhibitory synapses in the hippocampus. Synapse 2018; 73:e22075. [PMID: 30334291 PMCID: PMC6470051 DOI: 10.1002/syn.22075] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/20/2018] [Accepted: 10/12/2018] [Indexed: 12/14/2022]
Abstract
Brain-derived neurotrophic factor (BDNF), traditionally known for promoting neuronal growth and development, is also a modulator of synaptic transmission. In addition to the well-characterized effects at excitatory synapses, BDNF has been shown to acutely suppress inhibitory neurotransmission; however, the underlying mechanisms are unclear. We have previously shown that at inhibitory synapses in layer 2/3 of the somatosensory cortex, BDNF induces the mobilization of endogenous cannabinoids (eCBs) that act retrogradely to suppress GABA release. Here, we hypothesized that in the hippocampus, BDNF acts similarly via eCB signaling to suppress GABAergic transmission. We found that the acute application of BDNF reduced the spontaneous inhibitory postsynaptic currents (sIPSCs) via postsynaptic TrkB receptor activation. The suppressive effects of BDNF required eCB signaling, as this effect on sIPSCs was prevented by a CB1 receptor antagonist. Further, blocking the postsynaptic eCB release prevented the effect of BDNF, whereas eCB reuptake inhibition enhanced the effect of BDNF. These results suggest that BDNF triggers the postsynaptic release of eCBs. To identify the specific eCB release by BDNF, we tested the effects of disrupting the synthesis or degradation of 2-arachidonoylcglycerol (2-AG). Blocking 2-AG synthesis prevented the effect of BDNF and blocking 2-AG degradation enhanced the effect of BDNF. However, there was no change in the effect of BDNF when anandamide degradation was blocked. Collectively, these results suggest that in the hippocampus, BDNF-TrkB signaling induces the postsynaptic release of the endogenous cannabinoid 2-AG, which acts retrogradely on the presynaptic CB1 receptors to suppress GABA release.
Collapse
Affiliation(s)
- Rajamani Selvam
- Department of Neuroscience, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Mason L Yeh
- Department of Neuroscience, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Eric S Levine
- Department of Neuroscience, University of Connecticut School of Medicine, Farmington, Connecticut
| |
Collapse
|
19
|
Miranda M, Kent BA, Morici JF, Gallo F, Saksida LM, Bussey TJ, Weisstaub N, Bekinschtein P. NMDA receptors and BDNF are necessary for discrimination of overlapping spatial and non-spatial memories in perirhinal cortex and hippocampus. Neurobiol Learn Mem 2018; 155:337-343. [PMID: 30172952 DOI: 10.1016/j.nlm.2018.08.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 07/03/2018] [Accepted: 08/29/2018] [Indexed: 01/06/2023]
Abstract
Successful memory involves not only remembering information over time but also keeping memories distinct and less confusable. Discrimination of overlapping representations has been investigated in the dentate gyrus (DG) of the hippocampus and largely in the perirhinal cortex (Prh). In particular, the DG was shown to be important for discrimination of overlapping spatial memories and Prh was shown to be important for discrimination of overlapping object memories. In the present study, we used both a DG-dependent and a Prh-dependent task and manipulated the load of similarity between either spatial or object stimuli during information encoding. We showed that N-methyl-D-aspartate-type glutamate receptors (NMDAr) and BDNF participate of the same cellular network during consolidation of both overlapping object and spatial memories in the Prh and DG, respectively. This argues in favor of conserved cellular mechanisms across regions despite anatomical differences.
Collapse
Affiliation(s)
- Magdalena Miranda
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina
| | - Brianne A Kent
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Juan Facundo Morici
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina
| | - Francisco Gallo
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina
| | - Lisa M Saksida
- Department of Psychology and MRC/Wellcome Trust Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, Cambridge CB2 3EB, UK; Molecular Medicine Research Laboratories, Robarts Research Institute, Department of Physiology and Pharmacology, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada; The Brain and Mind Institute, Western University, London, ON, Canada
| | - Timothy J Bussey
- Department of Psychology and MRC/Wellcome Trust Behavioural and Clinical Neuroscience Institute, University of Cambridge, Downing Street, Cambridge CB2 3EB, UK; Molecular Medicine Research Laboratories, Robarts Research Institute, Department of Physiology and Pharmacology, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada; The Brain and Mind Institute, Western University, London, ON, Canada
| | - Noelia Weisstaub
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina
| | - Pedro Bekinschtein
- Laboratory of Memory Research and Molecular Cognition, Consejo Nacional de Investigaciones Científicas y Técnicas - Fundación INECO - Universidad Favaloro, Buenos Aires, Argentina.
| |
Collapse
|
20
|
Simmons DA. Modulating Neurotrophin Receptor Signaling as a Therapeutic Strategy for Huntington's Disease. J Huntingtons Dis 2018; 6:303-325. [PMID: 29254102 PMCID: PMC5757655 DOI: 10.3233/jhd-170275] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Huntington’s disease (HD) is an autosomal dominant neurodegenerative disorder caused by CAG repeat expansions in the IT15 gene which encodes the huntingtin (HTT) protein. Currently, no treatments capable of preventing or slowing disease progression exist. Disease modifying therapeutics for HD would be expected to target a comprehensive set of degenerative processes given the diverse mechanisms contributing to HD pathogenesis including neuroinflammation, excitotoxicity, and transcription dysregulation. A major contributor to HD-related degeneration is mutant HTT-induced loss of neurotrophic support. Thus, neurotrophin (NT) receptors have emerged as therapeutic targets in HD. The considerable overlap between NT signaling networks and those dysregulated by mutant HTT provides strong theoretical support for this approach. This review will focus on the contributions of disrupted NT signaling in HD-related neurodegeneration and how targeting NT receptors to augment pro-survival signaling and/or to inhibit degenerative signaling may combat HD pathologies. Therapeutic strategies involving NT delivery, peptidomimetics, and the targeting of specific NT receptors (e.g., Trks or p75NTR), particularly with small molecule ligands, are discussed.
Collapse
Affiliation(s)
- Danielle A Simmons
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| |
Collapse
|
21
|
Lv C, Ma Q, Han B, Li J, Geng Y, Zhang X, Wang M. Long-Term DL-3- n-Butylphthalide Treatment Alleviates Cognitive Impairment Correlate With Improving Synaptic Plasticity in SAMP8 Mice. Front Aging Neurosci 2018; 10:200. [PMID: 30026693 PMCID: PMC6041467 DOI: 10.3389/fnagi.2018.00200] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/13/2018] [Indexed: 12/19/2022] Open
Abstract
Alzheimer’s disease (AD) is the most prevalent form of dementia worldwide. AD is characterized by mild cognitive impairment at onset, irreversibly progressing with age to severe neurodegeneration and cognitive deficits in the late stages. Unfortunately, no effective treatments exist to prevent or delay the cognitive symptoms of AD. Studies have shown that DL-3-n-butylphthalide (DL-NBP) alleviates cognitive impairment induced by amyloid-β in mice by reducing oxidative stress, inhibiting apoptosis, and decreasing tau phosphorylation. In this study, we examined the effects of DL-NBP administration on cognitive function in the senescence-accelerated mouse prone 8 (SAMP8) model of age-related dementia. DL-NBP treatment for 3 months alleviated cognitive impairment in SAMP8 mice as assessed by performance in the Morris water maze test. Moreover, DL-NBP significantly increased the expression of synaptophysin and postsynaptic density protein 95 in the hippocampus of SAMP8 mice, indicative of a protective effect on hippocampal structural synaptic plasticity. In addition, brain-derived neurotrophic factor/tropomyosin receptor kinase B signaling, previously shown to promote synaptic plasticity, was significantly enhanced by the DL-NBP administration. Our findings suggest that DL-NBP is a potential drug candidate for the treatment of cognitive impairment in AD and may serve as the foundation for further research into the development of AD drugs.
Collapse
Affiliation(s)
- Chaonan Lv
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Qinying Ma
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Bing Han
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Jing Li
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Yuan Geng
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Xiaoman Zhang
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| | - Mingwei Wang
- Department of Neurology, the First Hospital of Hebei Medical University, Shijiazhuang, China.,Brain Aging and Cognitive Neuroscience Key Laboratory of Hebei Province, Shijiazhuang, China
| |
Collapse
|
22
|
Hashimoto M, Hossain S, Katakura M, Mamun AA, Shido O. Docosahexaenoic Acid Helps to Lessen Extinction Memory in Rats. Molecules 2018; 23:molecules23020451. [PMID: 29463009 PMCID: PMC6017742 DOI: 10.3390/molecules23020451] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 02/06/2018] [Accepted: 02/10/2018] [Indexed: 11/16/2022] Open
Abstract
Abstract: Memory extinction is referred to as a learning process in which a conditioned response (CR) progressively reduces over time as an animal learns to uncouple a response from a stimulus. Extinction occurs when the rat is placed into a context without shock after training. Docosahexaenoic acid (DHA, C22:6, n-3) is implicated in memory formation in mammalian brains. In a two-way active shuttle-avoidance apparatus, we examined whether DHA affects the extinction memory and the expression of brain cognition-related proteins, including gastrin-releasing peptide receptor (GRPR), brain-derived neurotrophic factor receptor (BDNFR) tyrosine kinase receptor B (TrKB), and N-methyl-d-aspartate receptor (NMDAR) subunits NR2A and NR2B. Also, the protein levels of GRP, BDNF, postsynaptic density protein-95 (PSD-95), and vesicular acetylcholine transporter (VAChT), and the antioxidative potentials, in terms of lipid peroxide (LPO) and reactive oxygen species (ROS), were examined in the hippocampus. During the acquisition phase, the rats received a conditioned stimulus (CS-tone) paired with an unconditioned stimulus (UCS foot shock) for three consecutive days (Sessions S1, S2, and S3, each consisting of 30-trials) after 12 weeks of oral administration of DHA. After a three-day interval, the rats were re-subjected to two extinction sessions (S4, S5), each comprising 30 trials of CS alone. During the acquisition training in S1, the shock-related avoidance frequency (acquisition memory) was significantly higher in the DHA-administered rats compared with the control rats. The avoidance frequency, however, decreased with successive acquisition trainings in sessions S2 and S3. When the rats were subjected to the extinction sessions after a break for consolidation, the conditioned response (CR) was also significantly higher in the DHA-administered rats. Interestingly, the freezing responses (frequency and time) also significantly decreased in the DHA-administered rats, thus suggesting that a higher coping capacity was present during fear stress in the DHA-administered rats. DHA treatments increased the mRNA levels of GRPR, BDNF receptor TrKB, and NMDAR subunit NR2B. DHA also increased the protein levels of GRP, BDNF, PSD-95, and VAChT, and the antioxidative potentials in the hippocampus. These results suggest the usefulness of DHA for treating stress disorders.
Collapse
Affiliation(s)
- Michio Hashimoto
- Department of Environmental Physiology, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan.
| | - Shahdat Hossain
- Department of Environmental Physiology, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan.
- Department of Biochemistry & Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.
| | - Masanori Katakura
- Department of Environmental Physiology, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan.
| | - Abdullah Al Mamun
- Department of Environmental Physiology, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan.
| | - Osamu Shido
- Department of Environmental Physiology, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan.
| |
Collapse
|
23
|
Serra MP, Poddighe L, Boi M, Sanna F, Piludu MA, Corda MG, Giorgi O, Quartu M. Expression of BDNF and trkB in the hippocampus of a rat genetic model of vulnerability (Roman low-avoidance) and resistance (Roman high-avoidance) to stress-induced depression. Brain Behav 2017; 7:e00861. [PMID: 29075579 PMCID: PMC5651403 DOI: 10.1002/brb3.861] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 09/13/2017] [Accepted: 09/22/2017] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION The selective breeding of Roman High- (RHA) and Low-Avoidance (RLA) rats for, respectively, rapid versus poor acquisition of the active avoidance response has generated two distinct phenotypes differing in many behavioral traits, including coping strategies to aversive conditions. Thus, RLA rats are considered as a genetic model of vulnerability to stress-induced depression whereas RHA rats are a model of resilience to that trait. Besides the monoamine hypothesis of depression, there is evidence that alterations in neuronal plasticity in the hippocampus and other brain areas are critically involved in the pathophysiology of mood disorders. MATERIALS AND METHODS Western blot (WB) and immunohistochemistry were used to investigate the basal immunochemical occurrence of brain-derived neurotrophic factor (BDNF) and its high-affinity tyrosine-kinase receptor trkB in the dorsal and ventral hippocampus of adult RHA and RLA rats. RESULTS WB analysis indicated that the optical density of BDNF- and trkB-positive bands in the dorsal hippocampus is, respectively, 48% and 25% lower in RLA versus RHA rats. Densitometric analysis of BDNF- and trkB-like immunoreactivity (LI) in brain sections showed that BDNF-LI is 24% to 34% lower in the different sectors of the Ammon's horn of RLA versus RHA rats, whereas line-related differences are observed in the dentate gyrus (DG) only in the ventral hippocampus. As for trkB-LI, significant differences are observed only in the dorsal hippocampus, where density is 23% lower in the DG of RLA versus RHA rats, while no differences across lines occur in the Ammon's horn. CONCLUSION These findings support the hypothesis that a reduced BDNF/trkB signaling in the hippocampus of RLA versus RHA rats may contribute to their more pronounced vulnerability to stress-induced depression.
Collapse
Affiliation(s)
- M Pina Serra
- Department of Biomedical Sciences University of Cagliari Monserrato (CA) Italy
| | - Laura Poddighe
- Department of Biomedical Sciences University of Cagliari Monserrato (CA) Italy
| | - Marianna Boi
- Department of Biomedical Sciences University of Cagliari Monserrato (CA) Italy
| | - Francesco Sanna
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
| | - M Antonietta Piludu
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
| | - M Giuseppa Corda
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
| | - Osvaldo Giorgi
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
| | - Marina Quartu
- Department of Biomedical Sciences University of Cagliari Monserrato (CA) Italy
| |
Collapse
|
24
|
Hashimotodani Y, Nasrallah K, Jensen KR, Chávez AE, Carrera D, Castillo PE. LTP at Hilar Mossy Cell-Dentate Granule Cell Synapses Modulates Dentate Gyrus Output by Increasing Excitation/Inhibition Balance. Neuron 2017; 95:928-943.e3. [PMID: 28817805 PMCID: PMC5609819 DOI: 10.1016/j.neuron.2017.07.028] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 06/23/2017] [Accepted: 07/25/2017] [Indexed: 01/20/2023]
Abstract
Excitatory hilar mossy cells (MCs) in the dentate gyrus receive inputs from dentate granule cells (GCs) and project back to GCs locally, contralaterally, and along the longitudinal axis of the hippocampus, thereby establishing an associative positive-feedback loop and connecting functionally diverse hippocampal areas. MCs also synapse with GABAergic interneurons that mediate feed-forward inhibition onto GCs. Surprisingly, although these circuits have been implicated in both memory formation (e.g., pattern separation) and temporal lobe epilepsy, little is known about activity-dependent plasticity of their synaptic connections. Here, we report that MC-GC synapses undergo a presynaptic, NMDA-receptor-independent form of long-term potentiation (LTP) that requires postsynaptic brain-derived neurotrophic factor (BDNF)/TrkB and presynaptic cyclic AMP (cAMP)/PKA signaling. This LTP is input specific and selectively expressed at MC-GC synapses, but not at the disynaptic inhibitory loop. By increasing the excitation/inhibition balance, MC-GC LTP enhances GC output at the associative MC-GC recurrent circuit and may contribute to dentate-dependent forms of learning and epilepsy.
Collapse
Affiliation(s)
- Yuki Hashimotodani
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Kaoutsar Nasrallah
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Kyle R Jensen
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Andrés E Chávez
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Daniel Carrera
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Pablo E Castillo
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
| |
Collapse
|
25
|
Valle-Leija P, Cancino-Rodezno A, Sánchez-Tafolla BM, Arias E, Elinos D, Feria J, Zetina ME, Morales MA, Cifuentes F. Presence of Functional Neurotrophin TrkB Receptors in the Rat Superior Cervical Ganglion. Front Physiol 2017; 8:474. [PMID: 28744222 PMCID: PMC5504415 DOI: 10.3389/fphys.2017.00474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 06/21/2017] [Indexed: 02/02/2023] Open
Abstract
Sympathetic neurons express the neurotrophin receptors TrkA, p75NTR, and a non-functional truncated TrkB isoform (TrkB-Tc), but are not thought to express a functional full-length TrkB receptor (TrkB-Fl). We, and others, have demonstrated that nerve growth factor (NGF) and brain derived neurotrophic factor (BDNF) modulate synaptic transmission and synaptic plasticity in neurons of the superior cervical ganglion (SCG) of the rat. To clarify whether TrkB is expressed in sympathetic ganglia and contributes to the effects of BDNF upon sympathetic function, we characterized the presence and activity of the neurotrophin receptors expressed in the adult SCG compared with their presence in neonatal and cultured sympathetic neurons. Here, we expand our previous study regarding the immunodetection of neurotrophin receptors. Immunohistochemical analysis revealed that 19% of adult ganglionic neurons expressed TrkB-Fl immunoreactivity (IR), 82% expressed TrkA-IR, and 51% expressed p75NTR-IR; TrkB-Tc would be expressed in 36% of neurons. In addition, using Western-blotting and reverse transcriptase polymerase chain reaction (RT-PCR) analyses, we confirmed the expression of TrkB-Fl and TrkB-Tc protein and mRNA transcripts in adult SCG. Neonatal neurons expressed significantly more TrkA-IR and TrkB-Fl-IR than p75NTR-IR. Finally, the application of neurotrophin, and high frequency stimulation, induced the activation of Trk receptors and the downstream PI3-kinase (phosphatidyl inositol-3-kinase) signaling pathway, thus evoking the phosphorylation of Trk and Akt. These results demonstrate that SCG neurons express functional TrkA and TrkB-Fl receptors, which may contribute to the differential modulation of synaptic transmission and long-term synaptic plasticity.
Collapse
Affiliation(s)
- Pablo Valle-Leija
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| | - Angeles Cancino-Rodezno
- Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| | - Berardo M Sánchez-Tafolla
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| | - Erwin Arias
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| | - Diana Elinos
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| | - Jessica Feria
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| | - María E Zetina
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| | - Miguel A Morales
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| | - Fredy Cifuentes
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| |
Collapse
|
26
|
Guo Y, Su ZJ, Chen YK, Chai Z. Brain-derived neurotrophic factor/neurotrophin 3 regulate axon initial segment location and affect neuronal excitability in cultured hippocampal neurons. J Neurochem 2017; 142:260-271. [DOI: 10.1111/jnc.14050] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 04/07/2017] [Accepted: 04/18/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Yu Guo
- State Key Laboratory of Membrane Biology; College of Life Sciences; Peking University; Beijing China
| | - Zi-jun Su
- State Key Laboratory of Membrane Biology; College of Life Sciences; Peking University; Beijing China
| | - Yi-kun Chen
- State Key Laboratory of Membrane Biology; College of Life Sciences; Peking University; Beijing China
| | - Zhen Chai
- State Key Laboratory of Membrane Biology; College of Life Sciences; Peking University; Beijing China
| |
Collapse
|
27
|
Wei SM, Eisenberg DP, Nabel KG, Kohn PD, Kippenhan JS, Dickinson D, Kolachana B, Berman KF. Brain-Derived Neurotrophic Factor Val66Met Polymorphism Affects the Relationship Between an Anxiety-Related Personality Trait and Resting Regional Cerebral Blood Flow. Cereb Cortex 2017; 27:2175-2182. [PMID: 27005989 DOI: 10.1093/cercor/bhw072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is an important modulator of constitutive stress responses mediated by limbic frontotemporal circuits, and its gene contains a functional polymorphism (Val66Met) that may influence trait stress sensitivity. Reports of an association of this polymorphism with anxiety-related personality traits have been controversial and without clear neurophysiological support. We, therefore, determined the relationship between resting regional cerebral blood flow (rCBF) and a well-validated measure of anxiety-related personality, the TPQ Harm Avoidance (HA) scale, as a function of BDNF Val66Met genotype. Sixty-four healthy participants of European ancestry underwent resting H215O positron emission tomography scans. For each genotype group separately, we first determined the relationship between participants' HA scores and their resting rCBF values in each voxel across the entire brain, and then directly compared these HA-rCBF relationships between Val66Met genotype groups. HA-rCBF relationships differed between Val homozygotes and Met carriers in several regions relevant to stress regulation: subgenual cingulate, orbital frontal cortex, and the hippocampal/parahippocampal region. In each of these areas, the relationship was positive in Val homozygotes and negative in Met carriers. These data demonstrate a coupling between trait anxiety and basal resting blood flow in frontolimbic neurocircuitry that may be determined in part by genetically mediated BDNF signaling.
Collapse
Affiliation(s)
- Shau-Ming Wei
- Section on Integrative Neuroimaging.,Clinical and Translational Neuroscience Branch, NIMH IRP, NIH, Bethesda, MD, USA
| | - Daniel P Eisenberg
- Section on Integrative Neuroimaging.,Clinical and Translational Neuroscience Branch, NIMH IRP, NIH, Bethesda, MD, USA
| | - Katherine G Nabel
- Section on Integrative Neuroimaging.,Clinical and Translational Neuroscience Branch, NIMH IRP, NIH, Bethesda, MD, USA
| | - Philip D Kohn
- Section on Integrative Neuroimaging.,Clinical and Translational Neuroscience Branch, NIMH IRP, NIH, Bethesda, MD, USA
| | - J Shane Kippenhan
- Section on Integrative Neuroimaging.,Clinical and Translational Neuroscience Branch, NIMH IRP, NIH, Bethesda, MD, USA
| | - Dwight Dickinson
- Clinical and Translational Neuroscience Branch, NIMH IRP, NIH, Bethesda, MD, USA
| | - Bhaskar Kolachana
- Clinical and Translational Neuroscience Branch, NIMH IRP, NIH, Bethesda, MD, USA
| | - Karen F Berman
- Section on Integrative Neuroimaging.,Clinical and Translational Neuroscience Branch, NIMH IRP, NIH, Bethesda, MD, USA
| |
Collapse
|
28
|
Edelmann E, Cepeda-Prado E, Leßmann V. Coexistence of Multiple Types of Synaptic Plasticity in Individual Hippocampal CA1 Pyramidal Neurons. Front Synaptic Neurosci 2017; 9:7. [PMID: 28352224 PMCID: PMC5348504 DOI: 10.3389/fnsyn.2017.00007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 02/20/2017] [Indexed: 02/05/2023] Open
Abstract
Understanding learning and memory mechanisms is an important goal in neuroscience. To gain insights into the underlying cellular mechanisms for memory formation, synaptic plasticity processes are studied with various techniques in different brain regions. A valid model to scrutinize different ways to enhance or decrease synaptic transmission is recording of long-term potentiation (LTP) or long-term depression (LTD). At the single cell level, spike timing-dependent plasticity (STDP) protocols have emerged as a powerful tool to investigate synaptic plasticity with stimulation paradigms that also likely occur during memory formation in vivo. Such kind of plasticity can be induced by different STDP paradigms with multiple repeat numbers and stimulation patterns. They subsequently recruit or activate different molecular pathways and neuromodulators for induction and expression of STDP. Dopamine (DA) and brain-derived neurotrophic factor (BDNF) have been recently shown to be important modulators for hippocampal STDP at Schaffer collateral (SC)-CA1 synapses and are activated exclusively by distinguishable STDP paradigms. Distinct types of parallel synaptic plasticity in a given neuron depend on specific subcellular molecular prerequisites. Since the basal and apical dendrites of CA1 pyramidal neurons are known to be heterogeneous, and distance-dependent dendritic gradients for specific receptors and ion channels are described, the dendrites might provide domain specific locations for multiple types of synaptic plasticity in the same neuron. In addition to the distinct signaling and expression mechanisms of various types of LTP and LTD, activation of these different types of plasticity might depend on background brain activity states. In this article, we will discuss some ideas why multiple forms of synaptic plasticity can simultaneously and independently coexist and can contribute so effectively to increasing the efficacy of memory storage and processing capacity of the brain. We hypothesize that resolving the subcellular location of t-LTP and t-LTD mechanisms that are regulated by distinct neuromodulator systems will be essential to reach a more cohesive understanding of synaptic plasticity in memory formation.
Collapse
Affiliation(s)
- Elke Edelmann
- Institute of Physiology, Otto-von-Guericke UniversityMagdeburg, Germany; Center for Behavioral Brain Sciences, Otto-von-Guericke UniversityMagdeburg, Germany
| | | | - Volkmar Leßmann
- Institute of Physiology, Otto-von-Guericke UniversityMagdeburg, Germany; Center for Behavioral Brain Sciences, Otto-von-Guericke UniversityMagdeburg, Germany
| |
Collapse
|
29
|
Abstract
Brain-derived neurotrophic factor (BDNF) belongs to a family of small secreted proteins that also include nerve growth factor, neurotrophin 3, and neurotrophin 4. BDNF stands out among all neurotrophins by its high expression levels in the brain and its potent effects at synapses. Several aspects of BDNF biology such as transcription, processing, and secretion are regulated by synaptic activity. Such observations prompted the suggestion that BDNF may regulate activity-dependent forms of synaptic plasticity such as long-term potentiation (LTP), a sustained enhancement of excitatory synaptic efficacy thought to underlie learning and memory. Here, we will review the evidence pointing to a fundamental role of this neurotrophin in LTP, especially within the hippocampus. Prominent questions in the field, including the release and action sites of BDNF during LTP, as well as the signaling and molecular mechanisms involved, will also be addressed. The diverse effects of BDNF at excitatory synapses are determined by the activation of TrkB receptors and downstream signaling pathways, and the functions, typically opposing in nature, of its immature form (proBDNF). The activation of p75NTR receptors by proBDNF and the implications for long-term depression will also be addressed. Finally, we discuss the synergy between TrkB and glucocorticoid receptor signaling to determine cellular responses to stress.
Collapse
Affiliation(s)
- G Leal
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - C R Bramham
- K.G. Jebsen Center for Neuropsychiatric Disorders, University of Bergen, Bergen, Norway
| | - C B Duarte
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; University of Coimbra, Coimbra, Portugal.
| |
Collapse
|
30
|
Tanaka T, Hasegawa-Baba Y, Watanabe Y, Mizukami S, Kangawa Y, Yoshida T, Shibutani M. Maternal exposure to ochratoxin A targets intermediate progenitor cells of hippocampal neurogenesis in rat offspring via cholinergic signal downregulation and oxidative stress responses. Reprod Toxicol 2016; 65:113-122. [DOI: 10.1016/j.reprotox.2016.06.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 05/24/2016] [Accepted: 06/22/2016] [Indexed: 10/21/2022]
|
31
|
Alsina FC, Hita FJ, Fontanet PA, Irala D, Hedman H, Ledda F, Paratcha G. Lrig1 is a cell-intrinsic modulator of hippocampal dendrite complexity and BDNF signaling. EMBO Rep 2016; 17:601-16. [PMID: 26935556 DOI: 10.15252/embr.201541218] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 01/28/2016] [Indexed: 11/09/2022] Open
Abstract
Even though many extracellular factors have been identified as promoters of general dendritic growth and branching, little is known about the cell-intrinsic modulators that allow neurons to sculpt distinctive patterns of dendrite arborization. Here, we identify Lrig1, a nervous system-enriched LRR protein, as a key physiological regulator of dendrite complexity of hippocampal pyramidal neurons. Lrig1-deficient mice display morphological changes in proximal dendrite arborization and defects in social interaction. Specifically, knockdown of Lrig1 enhances both primary dendrite formation and proximal dendritic branching of hippocampal neurons, two phenotypes that resemble the effect of BDNF on these neurons. In addition, we show that Lrig1 physically interacts with TrkB and attenuates BDNF signaling. Gain and loss of function assays indicate that Lrig1 restricts BDNF-induced dendrite morphology. Together, our findings reveal a novel and essential role of Lrig1 in regulating morphogenic events that shape the hippocampal circuits and establish that the assembly of TrkB with Lrig1 represents a key mechanism for understanding how specific neuronal populations expand the repertoire of responses to BDNF during brain development.
Collapse
Affiliation(s)
- Fernando Cruz Alsina
- Division of Molecular and Cellular Neuroscience, Institute of Cell Biology and Neuroscience (IBCN)-CONICET School of Medicine University of Buenos Aires (UBA), Buenos Aires, Argentina
| | - Francisco Javier Hita
- Division of Molecular and Cellular Neuroscience, Institute of Cell Biology and Neuroscience (IBCN)-CONICET School of Medicine University of Buenos Aires (UBA), Buenos Aires, Argentina
| | - Paula Aldana Fontanet
- Division of Molecular and Cellular Neuroscience, Institute of Cell Biology and Neuroscience (IBCN)-CONICET School of Medicine University of Buenos Aires (UBA), Buenos Aires, Argentina
| | - Dolores Irala
- Division of Molecular and Cellular Neuroscience, Institute of Cell Biology and Neuroscience (IBCN)-CONICET School of Medicine University of Buenos Aires (UBA), Buenos Aires, Argentina
| | - Håkan Hedman
- Oncology Research Laboratory, Department of Radiation Sciences, Umeå University, Umeå, Sweden
| | - Fernanda Ledda
- Division of Molecular and Cellular Neuroscience, Institute of Cell Biology and Neuroscience (IBCN)-CONICET School of Medicine University of Buenos Aires (UBA), Buenos Aires, Argentina
| | - Gustavo Paratcha
- Division of Molecular and Cellular Neuroscience, Institute of Cell Biology and Neuroscience (IBCN)-CONICET School of Medicine University of Buenos Aires (UBA), Buenos Aires, Argentina
| |
Collapse
|
32
|
Gibon J, Barker PA, Séguéla P. Opposing presynaptic roles of BDNF and ProBDNF in the regulation of persistent activity in the entorhinal cortex. Mol Brain 2016; 9:23. [PMID: 26932787 PMCID: PMC4774087 DOI: 10.1186/s13041-016-0203-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/25/2016] [Indexed: 11/15/2022] Open
Abstract
Background Sustained, persistent firing (PF) of cortical pyramidal neurons following a short depolarization is a crucial cellular mechanism required for spatial and working memory. Pyramidal neurons in the superficial and deep layers of the medial and lateral entorhinal cortex (EC) display this property of prolonged firing activity. Here, we focused on the regulation of this activity in EC neurons by mature brain derived neurotrophic factor (BDNF) and its precursor proBDNF. Results Using patch clamp electrophysiology in acute mouse cortical slices, we observed that BDNF facilitates cholinergic PF in pyramidal neurons in layer V of the medial EC. Inhibition of TrkB with K252a blocks the potentiating effect of BDNF whereas inhibition of p75NTR with function-blocking antibodies does not. By recording spontaneous excitatory post-synaptic currents (sEPSC), we find that BDNF acts pre-synaptically via TrkB to increase glutamate release whereas proBDNF acting via p75NTR acts to reduce it. MPEP abolished the facilitating effect of BDNF on PF, demonstrating that the metabotropic glutamate receptor mGluR5 plays a critical role in the BDNF effect. In contrast, paired pulse ratio and EPSC measurements indicated that proBDNF, via presynaptic p75NTR, is a negative regulator of glutamate release in the EC. Conclusions Taken together, our findings demonstrate that the BDNF/TrkB pathway facilitates persistent activity whereas the proBDNF/p75NTR pathway inhibits this mnemonic property of entorhinal pyramidal neurons.
Collapse
Affiliation(s)
- Julien Gibon
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Suite 778, Montreal, Quebec, H3A 2B4, Canada.
| | - Philip A Barker
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Suite 778, Montreal, Quebec, H3A 2B4, Canada.
| | - Philippe Séguéla
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Suite 778, Montreal, Quebec, H3A 2B4, Canada.
| |
Collapse
|
33
|
Filho PRM, Vercelino R, Cioato SG, Medeiros LF, de Oliveira C, Scarabelot VL, Souza A, Rozisky JR, Quevedo ADS, Adachi LNS, Sanches PRS, Fregni F, Caumo W, Torres ILS. Transcranial direct current stimulation (tDCS) reverts behavioral alterations and brainstem BDNF level increase induced by neuropathic pain model: Long-lasting effect. Prog Neuropsychopharmacol Biol Psychiatry 2016; 64:44-51. [PMID: 26160698 DOI: 10.1016/j.pnpbp.2015.06.016] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 06/24/2015] [Accepted: 06/30/2015] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Neuropathic pain (NP) is a chronic pain modality that usually results of damage in the somatosensory system. NP often shows insufficient response to classic analgesics and remains a challenge to medical treatment. The transcranial direct current stimulation (tDCS) is a non-invasive technique, which induces neuroplastic changes in central nervous system of animals and humans. The brain derived neurotrophic factor plays an important role in synaptic plasticity process. Behavior changes such as decreased locomotor and exploratory activities and anxiety disorders are common comorbidities associated with NP. OBJECTIVE Evaluate the effect of tDCS treatment on locomotor and exploratory activities, and anxiety-like behavior, and peripheral and central BDNF levels in rats submitted to neuropathic pain model. METHODS Rats were randomly divided: Ss, SsS, SsT, NP, NpS, and NpT. The neuropathic pain model was induced by partial sciatic nerve compression at 14 days after surgery; the tDCS treatment was initiated. The animals of treated groups were subjected to a 20 minute session of tDCS, for eight days. The Open Field and Elevated Pluz Maze tests were applied 24 h (phase I) and 7 days (phase II) after the end of tDCS treatment. The serum, spinal cord, brainstem and cerebral cortex BDNF levels were determined 48 h (phase I) and 8 days (phase II) after tDCS treatment by ELISA. RESULTS The chronic constriction injury (CCI) induces decrease in locomotor and exploratory activities, increases in the behavior-like anxiety, and increases in the brainstem BDNF levels, the last, in phase II (one-way ANOVA/SNK, P<0.05 for all). The tDCS treatment already reverted all these effects induced by CCI (one-way ANOVA/SNK, P<0.05 for all). Furthermore, the tDCS treatment decreased serum and cerebral cortex BDNF levels and it increased these levels in the spinal cord in phase II (one-way ANOVA/SNK, P<0.05). CONCLUSION tDCS reverts behavioral alterations associated to neuropathic pain, indicating possible analgesic and anxiolytic tDCS effects. tDCS treatment induces changes in the BDNF levels in different regions of the central nervous system (CNS), and this effect can be attributed to different cellular signaling activations.
Collapse
Affiliation(s)
- Paulo Ricardo Marques Filho
- Post-Graduate Program in Medicine: Medical Sciences - Medicine School, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil; Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil
| | - Rafael Vercelino
- Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Post-Graduate Program in Biological Sciences - Physiology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil
| | - Stefania Giotti Cioato
- Post-Graduate Program in Medicine: Medical Sciences - Medicine School, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil; Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil
| | - Liciane Fernandes Medeiros
- Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Post-Graduate Program in Biological Sciences: Pharmacology and Experimental Therapeutic, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil
| | - Carla de Oliveira
- Post-Graduate Program in Medicine: Medical Sciences - Medicine School, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil; Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil
| | - Vanessa Leal Scarabelot
- Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Post-Graduate Program in Biological Sciences - Physiology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil
| | - Andressa Souza
- Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil
| | - Joanna Ripoll Rozisky
- Post-Graduate Program in Medicine: Medical Sciences - Medicine School, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil
| | - Alexandre da Silva Quevedo
- Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil
| | - Lauren Naomi Spezia Adachi
- Post-Graduate Program in Medicine: Medical Sciences - Medicine School, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil; Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil
| | - Paulo Roberto S Sanches
- Biomedical Engineering of Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil
| | - Felipe Fregni
- Berenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Wolnei Caumo
- Post-Graduate Program in Medicine: Medical Sciences - Medicine School, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | - Iraci L S Torres
- Post-Graduate Program in Medicine: Medical Sciences - Medicine School, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil; Pharmacology of Pain and Neuromodulation Laboratory: Pre-clinical Researches Department of Pharmacology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil; Animal Experimentation Unit and Graduate Research Group, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-003, Brazil; Post-Graduate Program in Biological Sciences - Physiology, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil; Post-Graduate Program in Biological Sciences: Pharmacology and Experimental Therapeutic, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, RS 90050-170, Brazil.
| |
Collapse
|
34
|
Alcohol dependence-induced regulation of the proliferation and survival of adult brain progenitors is associated with altered BDNF-TrkB signaling. Brain Struct Funct 2015; 221:4319-4335. [PMID: 26659122 DOI: 10.1007/s00429-015-1163-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 11/26/2015] [Indexed: 12/12/2022]
Abstract
Effects of withdrawal from ethanol drinking in chronic intermittent ethanol vapor (CIE)-exposed dependent rats and air-exposed nondependent rats on proliferation and survival of progenitor cells in the hippocampus and the medial prefrontal cortex (mPFC) were investigated. Rats were injected with 5'-Bromo 2-deoxyuridine 72 h post-CIE to measure proliferation (2 h-old cells) and survival (29-day-old cells) of progenitors born during a time-point previously reported to elicit a proliferative burst in the hippocampus. Hippocampal and mPFC brain-derived neurotrophic factor (BDNF) and tropomyosin-related kinase B receptor (TrkB) expression were measured 3 h or 21d post-CIE to evaluate neurotrophic signaling during a time point preceding the proliferative burst and survival of newly born progenitors. CIE rats demonstrated elevated drinking compared to nondependent rats and CIE rats maintained elevated drinking following protracted abstinence. Withdrawal from CIE increased BDNF levels in the hippocampus and mPFC, and subsequently increased proliferation in the hippocampus and mPFC compared to nondependent rats and controls. Protracted abstinence from CIE reduced BDNF expression to control levels, and subsequently reduced neurogenesis compared to controls and nondependent rats in the hippocampus. In the mPFC, protracted abstinence reduced BDNF expression to control levels, whereas increased oligodendrogenesis in dependent rats compared to nondependent rats and controls. These results suggest a novel relationship between BDNF and progenitors in the hippocampus and mPFC, in which increased ethanol drinking may alter hippocampal and cortical function in alcohol dependent subjects by altering the cellular composition of newly born progenitors in the hippocampus and mPFC.
Collapse
|
35
|
Xiao N, Le QT. Neurotrophic Factors and Their Potential Applications in Tissue Regeneration. Arch Immunol Ther Exp (Warsz) 2015; 64:89-99. [PMID: 26611762 DOI: 10.1007/s00005-015-0376-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 11/02/2015] [Indexed: 12/24/2022]
Abstract
Neurotrophic factors are growth factors that can nourish neurons and promote neuron survival and regeneration. They have been studied as potential drug candidates for treating neurodegenerative diseases. Since their identification, there are more and more evidences to indicate that neurotrophic factors are also expressed in non-neuronal tissues and regulate the survival, anti-inflammation, proliferation and differentiation in these tissues. This mini review summarizes the characteristics of the neurotrophic factors and their potential clinical applications in the regeneration of neuronal and non-neuronal tissues.
Collapse
Affiliation(s)
- Nan Xiao
- Department of Biomedical Sciences, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, CA, USA.
| | - Quynh-Thu Le
- Department of Radiation Oncology, School of Medicine, Stanford University, Stanford, CA, USA
| |
Collapse
|
36
|
Tanaka T, Mizukami S, Hasegawa-Baba Y, Onda N, Sugita-Konishi Y, Yoshida T, Shibutani M. Developmental exposure of aflatoxin B1 reversibly affects hippocampal neurogenesis targeting late-stage neural progenitor cells through suppression of cholinergic signaling in rats. Toxicology 2015; 336:59-69. [DOI: 10.1016/j.tox.2015.08.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 07/22/2015] [Accepted: 08/04/2015] [Indexed: 01/12/2023]
|
37
|
Abe H, Tanaka T, Kimura M, Mizukami S, Saito F, Imatanaka N, Akahori Y, Yoshida T, Shibutani M. Cuprizone decreases intermediate and late-stage progenitor cells in hippocampal neurogenesis of rats in a framework of 28-day oral dose toxicity study. Toxicol Appl Pharmacol 2015; 287:210-21. [DOI: 10.1016/j.taap.2015.06.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 05/31/2015] [Accepted: 06/04/2015] [Indexed: 12/20/2022]
|
38
|
Tang Y, Ye M, Du Y, Qiu X, Lv X, Yang W, Luo J. EGFR signaling upregulates surface expression of the GluN2B-containing NMDA receptor and contributes to long-term potentiation in the hippocampus. Neuroscience 2015. [PMID: 26204818 DOI: 10.1016/j.neuroscience.2015.07.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
N-methyl-d-aspartate receptors (NMDARs) have been known to be regulated by various receptor tyrosine kinases. Activation of epidermal growth factor receptor (EGFR) specifically increases NMDAR-mediated currents and enhances long-term potentiation (LTP) in the hippocampus. However, the mechanism through which EGFR regulates NMDARs remains to be elucidated. In this study we found that EGFR was highly expressed in the hippocampus and mainly localized in the non-synaptic region including the soma and neurites of cultured hippocampal neurons. EGFR activation led to an increase in ifenprodil-sensitive NMDAR currents. Consistent with this, we also observed that surface expression of GluN2B-containing NMDAR was upregulated. Our biochemical data from hippocampal slices and hippocampal cultured neurons demonstrated that EGF treatment in vitro significantly increased phosphorylation of the GluN2B subunit at Y1472 with a coincidental activation of Src family kinases (SFKs). EGFR blockade with a specific antagonist BIBX-1382 attenuated an increase of GluN2B in the postsynaptic density during high-frequency stimulation (HFS)-induced LTP. Moreover, BIBX blockade significantly impaired HFS-induced LTP. In conclusion, our findings suggest that EGFR signaling upregulates NMDARs through modification of the GluN2B subunit, and is required for HFS-induced LTP in the hippocampus.
Collapse
Affiliation(s)
- Y Tang
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
| | - M Ye
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
| | - Y Du
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
| | - X Qiu
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
| | - X Lv
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
| | - W Yang
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China
| | - J Luo
- Department of Neurobiology, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China.
| |
Collapse
|
39
|
Abe H, Tanaka T, Kimura M, Mizukami S, Imatanaka N, Akahori Y, Yoshida T, Shibutani M. Developmental exposure to cuprizone reduces intermediate-stage progenitor cells and cholinergic signals in the hippocampal neurogenesis in rat offspring. Toxicol Lett 2015; 234:180-93. [DOI: 10.1016/j.toxlet.2015.01.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Revised: 01/11/2015] [Accepted: 01/29/2015] [Indexed: 11/28/2022]
|
40
|
Tian M, Zeng Y, Hu Y, Yuan X, Liu S, Li J, Lu P, Sun Y, Gao L, Fu D, Li Y, Wang S, McClintock SM. 7, 8-Dihydroxyflavone induces synapse expression of AMPA GluA1 and ameliorates cognitive and spine abnormalities in a mouse model of fragile X syndrome. Neuropharmacology 2015; 89:43-53. [DOI: 10.1016/j.neuropharm.2014.09.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 08/28/2014] [Accepted: 09/04/2014] [Indexed: 01/20/2023]
|
41
|
Galinato MH, Orio L, Mandyam CD. Methamphetamine differentially affects BDNF and cell death factors in anatomically defined regions of the hippocampus. Neuroscience 2014; 286:97-108. [PMID: 25463524 DOI: 10.1016/j.neuroscience.2014.11.042] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 10/25/2014] [Accepted: 11/08/2014] [Indexed: 01/05/2023]
Abstract
Methamphetamine exposure reduces hippocampal long-term potentiation (LTP) and neurogenesis and these alterations partially contribute to hippocampal maladaptive plasticity. The potential mechanisms underlying methamphetamine-induced maladaptive plasticity were identified in the present study. Expression of brain-derived neurotrophic factor (BDNF; a regulator of LTP and neurogenesis), and its receptor tropomyosin-related kinase B (TrkB) were studied in the dorsal and ventral hippocampal tissue lysates in rats that intravenously self-administered methamphetamine in a limited access (1h/day) or extended access (6h/day) paradigm for 17days post baseline sessions. Extended access methamphetamine enhanced expression of BDNF with significant effects observed in the dorsal and ventral hippocampus. Methamphetamine-induced enhancements in BDNF expression were not associated with TrkB receptor activation as indicated by phospho (p)-TrkB-706 levels. Conversely, methamphetamine produced hypophosphorylation of N-methyl-d-aspartate (NMDA) receptor subunit 2B (GluN2B) at Tyr-1472 in the ventral hippocampus, indicating reduced receptor activation. In addition, methamphetamine enhanced expression of anti-apoptotic protein Bcl-2 and reduced pro-apoptotic protein Bax levels in the ventral hippocampus, suggesting a mechanism for reducing cell death. Analysis of Akt, a pro-survival kinase that suppresses apoptotic pathways and pAkt at Ser-473 demonstrated that extended access methamphetamine reduces Akt expression in the ventral hippocampus. These data reveal that alterations in Bcl-2 and Bax levels by methamphetamine were not associated with enhanced Akt expression. Given that hippocampal function and neurogenesis vary in a subregion-specific fashion, where dorsal hippocampus regulates spatial processing and has higher levels of neurogenesis, whereas ventral hippocampus regulates anxiety-related behaviors, these data suggest that methamphetamine self-administration initiates distinct allostatic changes in hippocampal subregions that may contribute to the altered synaptic activity in the hippocampus, which may underlie enhanced negative affective symptoms and perpetuation of the addiction cycle.
Collapse
Affiliation(s)
- M H Galinato
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA 92037, USA; Department of Neurosciences, University of California San Diego, La Jolla, CA 92037, USA
| | - L Orio
- Departamento de Psicobiología, Facultad Psicología, Universidad Complutense de Madrid, Campus Somosaguas, 28223 Pozuelo de Alarcón, Madrid, Spain
| | - C D Mandyam
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA 92037, USA; Department of Neurosciences, University of California San Diego, La Jolla, CA 92037, USA.
| |
Collapse
|
42
|
Itahashi M, Abe H, Tanaka T, Mizukami S, Kikuchihara Y, Yoshida T, Shibutani M. Maternal exposure to 3,3’-iminodipropionitrile targets late-stage differentiation of hippocampal granule cell lineages to affect brain-derived neurotrophic factor signaling and interneuron subpopulations in rat offspring. J Appl Toxicol 2014; 35:884-94. [DOI: 10.1002/jat.3086] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 09/23/2014] [Accepted: 09/24/2014] [Indexed: 01/13/2023]
Affiliation(s)
- Megu Itahashi
- Laboratory of Veterinary Pathology; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho, Fuchu-shi Tokyo 183-8509 Japan
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences; Gifu University; 1-1 Yanagido, Gifu-shi Gifu 501-1193 Japan
| | - Hajime Abe
- Laboratory of Veterinary Pathology; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho, Fuchu-shi Tokyo 183-8509 Japan
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences; Gifu University; 1-1 Yanagido, Gifu-shi Gifu 501-1193 Japan
| | - Takeshi Tanaka
- Laboratory of Veterinary Pathology; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho, Fuchu-shi Tokyo 183-8509 Japan
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences; Gifu University; 1-1 Yanagido, Gifu-shi Gifu 501-1193 Japan
| | - Sayaka Mizukami
- Laboratory of Veterinary Pathology; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho, Fuchu-shi Tokyo 183-8509 Japan
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences; Gifu University; 1-1 Yanagido, Gifu-shi Gifu 501-1193 Japan
| | - Yoh Kikuchihara
- Laboratory of Veterinary Pathology; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho, Fuchu-shi Tokyo 183-8509 Japan
| | - Toshinori Yoshida
- Laboratory of Veterinary Pathology; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho, Fuchu-shi Tokyo 183-8509 Japan
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology; Tokyo University of Agriculture and Technology; 3-5-8 Saiwai-cho, Fuchu-shi Tokyo 183-8509 Japan
| |
Collapse
|
43
|
Leal G, Afonso PM, Salazar IL, Duarte CB. Regulation of hippocampal synaptic plasticity by BDNF. Brain Res 2014; 1621:82-101. [PMID: 25451089 DOI: 10.1016/j.brainres.2014.10.019] [Citation(s) in RCA: 286] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/10/2014] [Accepted: 10/13/2014] [Indexed: 01/01/2023]
Abstract
The neurotrophin brain-derived neurotrophic factor (BDNF) has emerged as a major regulator of activity-dependent plasticity at excitatory synapses in the mammalian central nervous system. In particular, much attention has been given to the role of the neurotrophin in the regulation of hippocampal long-term potentiation (LTP), a sustained enhancement of excitatory synaptic strength believed to underlie learning and memory processes. In this review we summarize the evidence pointing to a role for BDNF in generating functional and structural changes at synapses required for both early- and late phases of LTP in the hippocampus. The available information regarding the pre- and/or postsynaptic release of BDNF and action of the neurotrophin during LTP will be also reviewed. Finally, we discuss the effects of BDNF on the synaptic proteome, either by acting on the protein synthesis machinery and/or by regulating protein degradation by calpains and possibly by the ubiquitin-proteasome system (UPS). This fine-tuned control of the synaptic proteome rather than a simple upregulation of the protein synthesis may play a key role in BDNF-mediated synaptic potentiation. This article is part of a Special Issue entitled SI: Brain and Memory.
Collapse
Affiliation(s)
- Graciano Leal
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - Pedro M Afonso
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Ivan L Salazar
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; PhD Programme in Experimental Biology and Biomedicine (PDBEB) and Institute for Interdisciplinary Research, University of Coimbra (IIIUC), 3030-789 Coimbra, Portugal
| | - Carlos B Duarte
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Department of Life Sciences, University of Coimbra, 3004-517 Coimbra, Portugal.
| |
Collapse
|
44
|
Revest JM, Le Roux A, Roullot-Lacarrière V, Kaouane N, Vallée M, Kasanetz F, Rougé-Pont F, Tronche F, Desmedt A, Piazza PV. BDNF-TrkB signaling through Erk1/2 MAPK phosphorylation mediates the enhancement of fear memory induced by glucocorticoids. Mol Psychiatry 2014; 19:1001-9. [PMID: 24126929 PMCID: PMC4195976 DOI: 10.1038/mp.2013.134] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 08/27/2013] [Accepted: 08/28/2013] [Indexed: 12/25/2022]
Abstract
Activation of glucocorticoid receptors (GR) by glucocorticoid hormones (GC) enhances contextual fear memories through the activation of the Erk1/2(MAPK) signaling pathway. However, the molecular mechanism mediating this effect of GC remains unknown. Here we used complementary molecular and behavioral approaches in mice and rats and in genetically modified mice in which the GR was conditionally deleted (GR(NesCre)). We identified the tPA-BDNF-TrkB signaling pathway as the upstream molecular effectors of GR-mediated phosphorylation of Erk1/2(MAPK) responsible for the enhancement of contextual fear memory. These findings complete our knowledge of the molecular cascade through which GC enhance contextual fear memory and highlight the role of tPA-BDNF-TrkB-Erk1/2(MAPK) signaling pathways as one of the core effectors of stress-related effects of GC.
Collapse
Affiliation(s)
- J-M Revest
- INSERM U862, Neurocentre Magendie, Pathophysiology of Addiction, Bordeaux, France,Pathophysiology of Neuronal Plasticity, Université de Bordeaux, Bordeaux, France,Pathophysiology of Addiction, Neurocentre Magendie, INSERM-U862, 146 rue Léo Saignat, Bordeaux F-33077, France. E-mail:
| | - A Le Roux
- INSERM U862, Neurocentre Magendie, Pathophysiology of Addiction, Bordeaux, France,Pathophysiology of Neuronal Plasticity, Université de Bordeaux, Bordeaux, France
| | - V Roullot-Lacarrière
- INSERM U862, Neurocentre Magendie, Pathophysiology of Addiction, Bordeaux, France,Pathophysiology of Neuronal Plasticity, Université de Bordeaux, Bordeaux, France
| | - N Kaouane
- Pathophysiology of Neuronal Plasticity, Université de Bordeaux, Bordeaux, France,INSERM U862, Neurocentre Magendie, Pathophysiology of Declarative Memory, Bordeaux, France
| | - M Vallée
- INSERM U862, Neurocentre Magendie, Pathophysiology of Addiction, Bordeaux, France,Pathophysiology of Neuronal Plasticity, Université de Bordeaux, Bordeaux, France
| | - F Kasanetz
- INSERM U862, Neurocentre Magendie, Pathophysiology of Addiction, Bordeaux, France,Pathophysiology of Neuronal Plasticity, Université de Bordeaux, Bordeaux, France
| | - F Rougé-Pont
- INSERM U862, Neurocentre Magendie, Pathophysiology of Addiction, Bordeaux, France,Pathophysiology of Neuronal Plasticity, Université de Bordeaux, Bordeaux, France
| | - F Tronche
- CNRS UMR7224, UPMC Université Pierre et Marie Curie, Molecular Genetics, Neurophysiology and Behavior, Paris, France
| | - A Desmedt
- Pathophysiology of Neuronal Plasticity, Université de Bordeaux, Bordeaux, France,INSERM U862, Neurocentre Magendie, Pathophysiology of Declarative Memory, Bordeaux, France
| | - P V Piazza
- INSERM U862, Neurocentre Magendie, Pathophysiology of Addiction, Bordeaux, France,Pathophysiology of Neuronal Plasticity, Université de Bordeaux, Bordeaux, France
| |
Collapse
|
45
|
Ortiz JB, Mathewson CM, Hoffman AN, Hanavan PD, Terwilliger EF, Conrad CD. Hippocampal brain-derived neurotrophic factor mediates recovery from chronic stress-induced spatial reference memory deficits. Eur J Neurosci 2014; 40:3351-62. [PMID: 25156382 DOI: 10.1111/ejn.12703] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 07/22/2014] [Accepted: 07/24/2014] [Indexed: 12/15/2022]
Abstract
Chronic restraint stress impairs hippocampal-mediated spatial learning and memory, which improves following a post-stress recovery period. Here, we investigated whether brain-derived neurotrophic factor (BDNF), a protein important for hippocampal function, would alter the recovery from chronic stress-induced spatial memory deficits. Adult male Sprague-Dawley rats were infused into the dorsal hippocampal cornu ammonis (CA)3 region with an adeno-associated viral vector containing the sequence for a short hairpin RNA (shRNA) directed against BDNF or a scrambled sequence (Scr). Rats were then chronically restrained (wire mesh, 6 h/day for 21 days) and assessed for spatial learning and memory using a radial arm water maze (RAWM) either immediately after stressor cessation (Str-Imm) or following a 21-day post-stress recovery period (Str-Rec). All groups learned the RAWM task similarly, but differed on the memory retention trials. Rats in the Str-Imm group, regardless of adeno-associated viral contents, committed more errors in the spatial reference memory domain on the single retention trial during day 3 than did the non-stressed controls. Importantly, the typical improvement in spatial memory following the recovery from chronic stress was blocked with the shRNA against BDNF, as Str-Rec-shRNA performed worse on the RAWM compared with the non-stressed controls or Str-Rec-Scr. The stress effects were specific for the reference memory domain, but knockdown of hippocampal BDNF in unstressed controls briefly disrupted spatial working memory as measured by repeated entry errors on day 2 of training. These results demonstrated that hippocampal BDNF was necessary for the recovery from stress-induced hippocampal-dependent spatial memory deficits in the reference memory domain.
Collapse
Affiliation(s)
- J Bryce Ortiz
- Behavioral Neuroscience, Department of Psychology, Arizona State University, Box 1104, Tempe, AZ, 85287-1104, USA
| | | | | | | | | | | |
Collapse
|
46
|
Fingolimod increases brain-derived neurotrophic factor levels and ameliorates amyloid β-induced memory impairment. Behav Brain Res 2014; 268:88-93. [PMID: 24713151 DOI: 10.1016/j.bbr.2014.03.046] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 03/26/2014] [Accepted: 03/31/2014] [Indexed: 01/19/2023]
Abstract
Alzheimer's disease is a progressive neurodegenerative disorder. Amyloid β, a neurotoxic protein, causes disruption of hippocampal synaptic plasticity, and induces cognitive impairment in Alzheimer's disease. We previously revealed that fingolimod, a new oral immunosuppressant used to treat multiple sclerosis, ameliorates oligomeric amyloid β-induced neuronal damage via up-regulation of neuronal brain-derived neurotrophic factor (BDNF). Here, we showed that oral administration of fingolimod ameliorated the impairment in object recognition memory and associative learning in mice injected with amyloid β. This effect was associated with restoration of normal BDNF expression levels in the cerebral cortices and hippocampi, suggesting that neuroprotection was mediated by up-regulation of neuronal BDNF levels. Therefore, fingolimod may provide therapeutic effects in patients with Alzheimer's disease.
Collapse
|
47
|
Expression of full-length and truncated trkB in human striatum and substantia nigra neurons: implications for Parkinson's disease. J Mol Histol 2013; 45:349-61. [PMID: 24374887 DOI: 10.1007/s10735-013-9562-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 12/17/2013] [Indexed: 12/20/2022]
Abstract
Brain derived neurotrophic factor (BDNF) is a potent mediator of cell survival and differentiation and can reverse neuronal injury associated with Parkinson's disease (PD). Tropomyosin receptor kinase B (trkB) is the high affinity receptor for BDNF. There are two major trkB isoforms, the full-length receptor (trkB.tk(+)) and the truncated receptor (trkB.t1), that mediate the diverse, region specific functions of BDNF. Both trkB isoforms are widely distributed throughout the brain, but the isoform specific distribution of trkB.t1 and trkB.tk(+) to human neurons is not well characterized. Therefore, we report the regional and neuronal distribution of trkB.tk(+) and trkB.t1 in the striatum and substantia nigra pars compacta (SNpc) of human autopsy tissues from control and PD cases. In both PD and control tissues, we found abundant, punctate distribution of trkB.tk(+) and trkB.t1 proteins in striatum and SNpc neurons. In PD, trkB.tk(+) is decreased in striatal neurites, increased in striatal somata, decreased in SNpc somata and dendrites, and increased in SNpc axons. TrkB.t1 is increased in striatal somata, decreased in striatal axons, and increased in SNpc distal dendrites. We believe changes in trkB isoform distribution and expression levels may be markers of pathology and affect the neuronal response to BDNF.
Collapse
|
48
|
Rodrigues TM, Jerónimo-Santos A, Sebastião AM, Diógenes MJ. Adenosine A(2A) Receptors as novel upstream regulators of BDNF-mediated attenuation of hippocampal Long-Term Depression (LTD). Neuropharmacology 2013; 79:389-98. [PMID: 24361450 DOI: 10.1016/j.neuropharm.2013.12.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 11/08/2013] [Accepted: 12/08/2013] [Indexed: 01/05/2023]
Abstract
Hippocampal Long-Term Potentiation (LTP) is facilitated by BDNF, through the activation of tropomyosin-related kinase B (TrkB) receptors. However, an influence of BDNF upon Long-Term Depression (LTD) was also shown. The present work aimed to further evaluate the effect of BDNF and TrkB receptors upon CA1 hippocampal LTD and to elucidate whether this effect is under the upstream control of other signalling processes, such as the adenosine A(2A)Receptors (A(2A)Rs). LTD, induced by a Low-Frequency Stimulation (LFS, 900 pulses, 1 Hz) in the CA1 area of rat hippocampal slices, was significantly attenuated when these slices were exposed to BDNF (60-100 ng/mL). A lower BDNF concentration (20 ng/ml) was only effective to inhibit LTD if A(2A)Rs were activated by a selective agonist, CGS 21680 (10 nM), or if the extracellular adenosine level was increased by 5-iodotubercidin (100 nM). BDNF (100 ng/ml) effect upon LTD was prevented by K252a (200 nM), which is known to prevent TrkB transphosphorylation, hence suggesting that this action requires TrkB receptor activation. BDNF (100 ng/ml) lacked effect on an adenosine-depleted background (adenosine deaminase, 2 U/ml) or under selective A(2A)R blockade (SCH 58261, 100 nM), indicating that it relies on tonic A(2A)R activation. Forskolin (10 μM), a cell-permeable activator of adenylate cyclase, rescued BDNF (100 ng/ml) effect in slices where A(2A)Rs were blocked with SCH 58261 (100 nM), whereas a PKA inhibitor, H-89 (1 μM), prevented LTD attenuation by BDNF (100 ng/ml). We conclude that the influence of BDNF TrkB receptors upon LTD is under the strict control of A(2A)Rs activation, through a mechanism that requires the cAMP/PKA transducing system.
Collapse
Affiliation(s)
- Tiago M Rodrigues
- Institute of Pharmacology and Neurosciences, Faculty of Medicine, University of Lisbon, Lisbon, Portugal; Unit of Neurosciences, Institute of Molecular Medicine, University of Lisbon, Lisbon, Portugal
| | - André Jerónimo-Santos
- Institute of Pharmacology and Neurosciences, Faculty of Medicine, University of Lisbon, Lisbon, Portugal; Unit of Neurosciences, Institute of Molecular Medicine, University of Lisbon, Lisbon, Portugal
| | - Ana M Sebastião
- Institute of Pharmacology and Neurosciences, Faculty of Medicine, University of Lisbon, Lisbon, Portugal; Unit of Neurosciences, Institute of Molecular Medicine, University of Lisbon, Lisbon, Portugal
| | - Maria José Diógenes
- Institute of Pharmacology and Neurosciences, Faculty of Medicine, University of Lisbon, Lisbon, Portugal; Unit of Neurosciences, Institute of Molecular Medicine, University of Lisbon, Lisbon, Portugal.
| |
Collapse
|
49
|
Rostami E, Krueger F, Plantman S, Davidsson J, Agoston D, Grafman J, Risling M. Alteration in BDNF and its receptors, full-length and truncated TrkB and p75(NTR) following penetrating traumatic brain injury. Brain Res 2013; 1542:195-205. [PMID: 24192075 DOI: 10.1016/j.brainres.2013.10.047] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 10/16/2013] [Accepted: 10/24/2013] [Indexed: 01/03/2023]
Abstract
The evidence that BDNF is involved in neuroprotection, neuronal repair and recovery after traumatic brain injury (TBI) is substantial. We have previously shown that the polymorphism of the human BDNF gene predicts cognitive recovery and outcome following penetrating TBI. The distribution of expression of BDNF and its receptors after penetrating TBI has not been investigated. In this study we examined the expression of these genes in a rat model of penetrating TBI. The injury is produced by a controlled penetration of a 2mm thick needle-shaped object, which is accelerated with a pellet from an air gun. We used in situ hybridization and investigated the mRNA expression of BDNF and its receptors: the full-length and the truncated TrkB and p75(NTR), from 1 day to 8 weeks following penetrating TBI. In addition, the protein level of BDNF in frontal cortex and hippocampus was measured by reverse phase protein microarray (RPPM). The mRNA expression of BDNF and its receptors decreased in the hippocampus in the border zone ipsilateral to the injury while there was an increase in mRNA expression at the contralateral side. The increase in BDNF mRNA expression in the hippocampus was sustained for 2 weeks following injury, with the highest expression noted in the CA3 cell layer. Furthermore, the protein analysis by RPPM showed increased levels of BDNF in the frontal cortex and the hippocampus up to 2 weeks after TBI. At 8 weeks following injury there was an intense labeling of the truncated TrkB receptor and the p75(NTR) in the area surrounding the cavity. Our study is the first report on the expression of BDNF and its receptors following penetrating TBI and suggests that their expression is altered long after the acute phase of injury. Further studies are needed to investigate if the late expressions of these receptors are beneficial or deleterious. In either case it indicates the possibility to influence the recovery after brain injury during the chronic phase and the development of treatments that may improve the outcome of TBI patients.
Collapse
Affiliation(s)
- Elham Rostami
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, S-171 77 Stockholm, Sweden(1); Department of Neuroscience and Neurosurgery, Uppsala University Hospital, Uppsala, Sweden.
| | - Frank Krueger
- Department of Molecular Neuroscience, George Mason University, Fairfax, VA, USA; Department of Psychology, George Mason University, Fairfax, VA, USA
| | - Stefan Plantman
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, S-171 77 Stockholm, Sweden(1)
| | - Johan Davidsson
- Division of Vehicle Safety, Chalmers University of Technology, Gothenburg, Sweden
| | - Denes Agoston
- Department of Anatomy, Physiology and Genetics, Uniformed Services University, Bethesda, MD, USA
| | - Jordan Grafman
- Brain Injury Research, Cognitive Neuroscience Laboratory, Rehabilitation Institute of Chicago, IL, USA
| | - Mårten Risling
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, S-171 77 Stockholm, Sweden(1)
| |
Collapse
|
50
|
Kudryashova IV. Analysis of conditions that are important for the beginning of consolidation in a model of long-term synaptic potentiation. NEUROCHEM J+ 2013. [DOI: 10.1134/s1819712413030070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|