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Wang X, Ding Q, Li Y, Li T, Li Y, Yin J, Zhuang W. Repetitive transcranial magnetic stimulation impacts the executive function of patients with vascular cognitive impairment: a systematic review and meta-analysis. Front Neurol 2024; 15:1374395. [PMID: 38962482 PMCID: PMC11220282 DOI: 10.3389/fneur.2024.1374395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 06/07/2024] [Indexed: 07/05/2024] Open
Abstract
Objective Executive dysfunction is a core symptom of vascular cognitive impairment (VCI), which seriously affects patients' prognosis. This paper aims to investigate the effectiveness of rTMS on executive function in VCI. Methods The databases selected for this study included Pubmed, Embase, Cochrane Library, China National Knowledge Infrastructure (CNKI), Wanfang, China Science and Technology Journal Database (VIP), and China Biology Medicine Disc (CBM). The screening times were conducted from the time of library construction until August 23, 2023. The inclusion criteria for this meta-analysis were randomized controlled trials (RCTs) on rTMS for VCI, which include executive function scores. The primary metrics were executive subscale scores of the Cognitive Comprehensive Scale and total scores of the Executive Specificity Scale. The secondary metrics were subscale scores of the Executive Specificity Scale. The quality of each eligible study was assessed using the Cochrane Risk of Bias tool. Meta-analysis and bias analysis were performed using Stata (version 16.0) and RevMan (version 5.3). Results A total of 20 high-quality clinical RCTs with 1,049 samples were included in this paper. The findings from the primary outcomes revealed that within the rTMS group, there were significantly higher scores observed for the executive sub-item on the cognitive composite scale (SMD = 0.93, 95% CI = 0.77-1.08, p < 0.00001, I 2 = 14%) and the total score on the executive specific scale (SMD = 0.69, 95% CI = 0.44-0.94, p < 0.00001, I 2 = 0%) compared to the control group. As for the secondary outcome measures, as shown by the Trail Making Test-A (time) (MD = -35.75, 95% CI = -68.37 to -3.12, p = 0.03, I 2 = 55%), the Stroop-C card (time) (SMD = -0.46, 95% CI = -0.86 to -0.06, p = 0.02, I 2 = 0%) and the Stroop-C card (correct number) (SMD = 0.49, 95% CI = 0.04-0.94, p = 0.03, I 2 = 0%), the experimental group shorts time and enhances accuracy of executive task in comparison to the control group. Subgroup analysis of the main outcome demonstrated that intermittent theta burst stimulation (iTBS), higher frequency, lower intensity, longer duration, and combined comprehensive therapy exhibited superior efficacy. Conclusion rTMS is effective in the treatment of the executive function of VCI. The present study has some limitations, so multi-center, large-sample, objective indicators and parameters are needed to further explore in the future.Systematic review registration:https://www.crd.york.ac.uk/prospero/, CRD42023459669.
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Affiliation(s)
- Xu Wang
- School of Rehabilitation Medicine, Henan University of Chinese Medicine, Zhengzhou, China
| | - Qixin Ding
- School of Rehabilitation Medicine, Henan University of Chinese Medicine, Zhengzhou, China
| | - Yuefang Li
- School of Clinical Medicine, Henan University, Zhengzhou, China
| | - Tianshu Li
- Department of Rehabilitation Medicine, The First People’s Hospital of Zhengzhou, Zhengzhou, China
| | - Yakun Li
- Department of Rehabilitation, Henan Provincial People's Hospital, Zhengzhou, China
| | - Jialin Yin
- Department of Rehabilitation, Henan Provincial People's Hospital, Zhengzhou, China
| | - Weisheng Zhuang
- Department of Rehabilitation, School of Rehabilitation Medicine, Henan Provincial People's Hospital, Henan University of Chinese Medicine, Zhengzhou, China
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Chen J, Dong Y, Guo H, Zhao T, Zhang D, Jin S. Efficacy of rTMS combined with cognitive training in TBI with cognition disorder: a systematic review and meta-analysis. Neurol Sci 2024:10.1007/s10072-024-07530-8. [PMID: 38625608 DOI: 10.1007/s10072-024-07530-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/09/2024] [Indexed: 04/17/2024]
Abstract
Post-traumatic brain injury cognitive disorder(PTBICD) is one of the common symptoms of TBI survivors, severely limiting their life and rehabilitation progress. Repetitive transcranial magnetic stimulation (rTMS) has been shown to modulate cognition in a non-invasive manner while there are inconsistencies in previous studies. A comprehensive systematic review of rTMS treatment in patients with PTBICD is warranted. To evaluate the efficacy and safety of rTMS + cognitive training(CT) in enhancing cognitive function among PTBICD patients. A comprehensive search was conducted in PubMed, EMBASE, Cochrane Library, WOS, CNKI, Wan Fang, VIP and CBM, to identify relevant randomized controlled trials(RCTs) published before December 20, 2023. The primary outcomes measured changes in global cognitive scales, while the secondary outcomes focused on improvements in attention, memory, event-related potentials, and activities of daily living. Meta-analysis of data was carried out using Stata 14.0. Fourteen studies including 820 PTBICD patients were included. The results showed that rTMS + CT significantly improved MoCA[WMD = 3.47, 95%CI (2.56, 4.38)], MMSE[WMD = 3.79, 95%CI (2.23, 5.35)], RBMT[WMD = 1.53, 95%CI (0.19, 2.87)], LOTCA[WMD = 5.68, 95%CI (3.11, 8.24)], and promoted MBI[WMD = 7.41, 95%CI (5.90, 8.92)] as well as reduced correlated potential P300 latency[WMD = -20.77, 95%CI (-38.08, -3.45)] and amplitude[WMD = 0.81, 95%CI (0.57, 1.06)] in PTBICD compared to sham rTMS or CT, while adverse reaction ratio was higher than that of control group [RR = 1.67, 95%CI (1.00, 2.77)]. The results demonstrated that rTMS + CT can improve the cognitive function, mental state and daily activity ability of PTBICD patients. Systematic Review Registration: [PROSPERO], identifier [No. CRD42024520596].
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Affiliation(s)
- Jia Chen
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuanwei Dong
- Orthopedics Department, Hospital of Chengdu University of Traditional Chinese Medicine, No.39, 12 Bridge Road, Jinniu District, Chengdu, 610000, Sichuan, China.
| | - Hong Guo
- Rehabilitation Department, Hospital of Chengdu University of Traditional Chinese Medicine, No.39, 12 Bridge Road, Jinniu District, Chengdu, 610000, Sichuan, China
| | - Tianyu Zhao
- Rehabilitation Department, Hospital of Chengdu University of Traditional Chinese Medicine, No.39, 12 Bridge Road, Jinniu District, Chengdu, 610000, Sichuan, China.
| | - Di Zhang
- Rehabilitation Department, Hospital of Chengdu University of Traditional Chinese Medicine, No.39, 12 Bridge Road, Jinniu District, Chengdu, 610000, Sichuan, China.
| | - Song Jin
- Rehabilitation Department, Hospital of Chengdu University of Traditional Chinese Medicine, No.39, 12 Bridge Road, Jinniu District, Chengdu, 610000, Sichuan, China.
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Dufor T, Lohof AM, Sherrard RM. Magnetic Stimulation as a Therapeutic Approach for Brain Modulation and Repair: Underlying Molecular and Cellular Mechanisms. Int J Mol Sci 2023; 24:16456. [PMID: 38003643 PMCID: PMC10671429 DOI: 10.3390/ijms242216456] [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: 10/12/2023] [Revised: 11/08/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
Neurological and psychiatric diseases generally have no cure, so innovative non-pharmacological treatments, including non-invasive brain stimulation, are interesting therapeutic tools as they aim to trigger intrinsic neural repair mechanisms. A common brain stimulation technique involves the application of pulsed magnetic fields to affected brain regions. However, investigations of magnetic brain stimulation are complicated by the use of many different stimulation parameters. Magnetic brain stimulation is usually divided into two poorly connected approaches: (1) clinically used high-intensity stimulation (0.5-2 Tesla, T) and (2) experimental or epidemiologically studied low-intensity stimulation (μT-mT). Human tests of both approaches are reported to have beneficial outcomes, but the underlying biology is unclear, and thus optimal stimulation parameters remain ill defined. Here, we aim to bring together what is known about the biology of magnetic brain stimulation from human, animal, and in vitro studies. We identify the common effects of different stimulation protocols; show how different types of pulsed magnetic fields interact with nervous tissue; and describe cellular mechanisms underlying their effects-from intracellular signalling cascades, through synaptic plasticity and the modulation of network activity, to long-term structural changes in neural circuits. Recent advances in magneto-biology show clear mechanisms that may explain low-intensity stimulation effects in the brain. With its large breadth of stimulation parameters, not available to high-intensity stimulation, low-intensity focal magnetic stimulation becomes a potentially powerful treatment tool for human application.
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Affiliation(s)
- Tom Dufor
- Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK
| | - Ann M. Lohof
- Sorbonne Université and CNRS, UMR8256 Biological Adaptation and Ageing, 75005 Paris, France;
| | - Rachel M. Sherrard
- Sorbonne Université and CNRS, UMR8256 Biological Adaptation and Ageing, 75005 Paris, France;
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Huang M, Zheng B, Zhou W, Fu H, Chen X, Wu H, Zhang J, Zhou X. High-Frequency Repetitive Magnetic Stimulation at the Sacrum Alleviates Chronic Constipation in Parkinson's Patients. Ann Indian Acad Neurol 2023; 26:235-240. [PMID: 37538410 PMCID: PMC10394460 DOI: 10.4103/aian.aian_1001_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/22/2023] [Accepted: 02/16/2023] [Indexed: 08/05/2023] Open
Abstract
Objective This study was to investigate the therapeutic effect of high-frequency repetitive magnetic stimulation (HF-rMS) at the sacrum for chronic constipation in Parkinson's patients (PD). Materials and Methods Eventually 48 PD patients were enrolled from July 2019 to October 2020, and randomly divided into the HF-rMS group (the intervention group, n = 24) and the sham HF-rMS group (the control group, n = 24). The intervention group received HF-rMS at the sacrum, whereas the control group received ineffective magnetic stimulation. We performed clinical evaluation before and after HF-rMS treatment, including constipation score scale (KESS questionnaire), Unified Parkinson's Disease Rating Scale (UPDRS-III exercise examination), Hoehn-Yahr (H-Y) stage of motor function; simple mental status scale (MMSE), anxiety/depression table (HAD-A/HAD-D), the activity of daily living (ADL), and quality of life scale for patients with constipation (PAC-QOL) to evaluate symptoms and satisfaction of PD patients with chronic constipation. Results There was no significant difference in the clinical characteristics between the two groups. As compared to the control group, the HF-rMS group displayed a larger change (pre and posttreatment) in the KESS scores of PD patients with chronic constipation, suggesting a significant improvement. Moreover, HF-rMS significantly promoted the mood, activity of daily living, and quality of life of PD patients when comparing the alteration of HAD-A/HAD-D scores, ADL scores, and PAC-QOL scores between the two groups. Finally, there was no significant difference in the change of the UPDRS III score and the MMSE score between the two groups. Conclusion HF-rMS at the sacrum can improve chronic constipation in PD patients.
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Affiliation(s)
- Mei Huang
- Department of Neurology, Nursing Unit, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Bofang Zheng
- Department of Neurology, Nursing Unit, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
- Special Medical Service Center, Neuroscience Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Wanfei Zhou
- Special Medical Service Center, Neuroscience Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Huaili Fu
- Special Medical Service Center, Neuroscience Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Xinrun Chen
- Department of Clinical Medicine, The First Clinical College of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Heyong Wu
- Special Medical Service Center, Neuroscience Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Jianguo Zhang
- Special Medical Service Center, Neuroscience Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Xianju Zhou
- Department of Neurology, Nursing Unit, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
- Special Medical Service Center, Neuroscience Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
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Li KP, Sun J, Wu CQ, An XF, Wu JJ, Zheng MX, Hua XY, Xu JG. Effects of repetitive transcranial magnetic stimulation on post-stroke patients with cognitive impairment: A systematic review and meta-analysis. Behav Brain Res 2023; 439:114229. [PMID: 36442646 DOI: 10.1016/j.bbr.2022.114229] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/17/2022] [Accepted: 11/24/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Post-stroke cognitive impairment (PSCI) is one of the common symptoms in stroke survivors, by which their quality of life and rehabilitation progress are severely limited. Repetitive transcranial magnetic stimulation (rTMS) has been proven to regulate cognition in a non-invasive way. However, the inconsistency in its effectiveness on PSCI reported in previous studies cannot be ruled out. A critical and comprehensive systematic review of rTMS on PSCI patients is necessary. METHODS Trials published before the end of February 2022 on rTMS and PSCI were systematically retrieved from PubMed, Cochrane Library, EBSCO, Embase and SCOPUS. High-quality literature was selected following the inclusion and exclusion criteria, with their references being screened. Meta-analysis of data was carried out using RevMan 5.4 software. RESULTS Ten trials involving 347 participants were included in the current review. Global cognition as measured by MMSE or MoCA (SMD=0.54; 95% CI=0.31, 0.76; P < 0.00001; I2 = 38%) and modified Barthel index (MD=9.00; 95% CI=2.93, 15.06; P = 0.004; I2 = 0%) were significantly improved by rTMS compared to sham stimulation in PSCI patients. Performance of the digit symbol test, rivermead behavioral memory test and attention in PSCI patients were also significantly improved. Subgroup analyses showed that significant differences were found in both MoCA and MMSE among PSCI patients by rTMS. MoCA was significantly improved by high frequency rTMS, while both MoCA and MMSE were significantly improved targeting on left dorsolateral prefrontal cortex. CONCLUSION rTMS provides a non-invasive and effective technique for the treatment of post-stroke patients with cognitive impairment.
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Affiliation(s)
- Kun-Peng Li
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jie Sun
- School of Nursing, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Cai-Qin Wu
- School of Nursing, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Xu-Fei An
- School of Foreign Studies, Xi'an Jiaotong University, No. 28, West Xianning Road, Xi'an, Shaanxi 710049, China
| | - Jia-Jia Wu
- Department of Rehabilitation Medicine, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Mou-Xiong Zheng
- Department of Traumatology and Orthopedics, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China.
| | - Xu-Yun Hua
- Department of Traumatology and Orthopedics, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China.
| | - Jian-Guang Xu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation, Ministry of Education, Shanghai 201203, China.
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6
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Bayat M, Karimi N, Karami M, Haghighi AB, Bayat K, Akbari S, Haghani M. Chronic exposure to 2.45 GHz microwave radiation improves cognition and synaptic plasticity impairment in vascular dementia model. Int J Neurosci 2023; 133:111-122. [PMID: 33635159 DOI: 10.1080/00207454.2021.1896502] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Purpose: In this study, we evaluated the effects of 2.45 GHz microwave radiation on cognitive dysfunction induced by vascular dementia (VaD).Methods: The VaD was induced by bilateral-common carotid occlusion (2-VO). The rats were divided into 4 groups including: control (n = 6), sham (n = 6), 2-VO (n = 8), and 2-VO + Wi-Fi (n = 10) groups. Wi-Fi modem centrally located at the distance of 25 cm from the animal's cages and the animals were continuously exposed to Wi-Fi signal while they freely moved in the cage (2 h/day for forty-five days). Therefore, the power density (PD) and specific absorption rate value (SAR) decreased at a distance of 25 to 60 cm (PD = 0.018 to 0.0032 mW/cm2, SAR = 0.0346 to 0.0060 W/Kg). The learning, memory, and hippocampal synaptic-plasticity were evaluated by radial arm maze (RAM), passive avoidance (PA), and field-potential recording respectively. The number of hippocampal CA1 cells was also assessed by giemsa staining.Results: Our results showed that VaD model led to impairment in the spatial learning and memory performance in RAM and PA that were associated with long-term potentiation (LTP) impairment, decrease of basal-synaptic transmission (BST), increase of GABA transmission, and decline of neurotransmitter release-probability as well as hippocampal cell loss. Notably, chronic Wi-Fi exposure significantly recovered the learning-memory performance, LTP induction, and cell loss without any effect on BST.Conclusions: The LTP recovery by Wi-Fi in the 2-VO rats was probably related to significant increases in the hippocampal CA1 neuronal density, partial recovery of neurotransmitter release probability, and reduction of GABA transmissiSon as evident by rescue of paired-pulse ratio 10 ms.
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Affiliation(s)
- Mahnaz Bayat
- Clinical Neurology Research Centre, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Narges Karimi
- Department of Physiology, the Medical School, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Karami
- Department of Physiology, the Medical School, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Kamjoo Bayat
- Department of Physics, K. N. Toosi University of Technology, Tehran, Iran
| | - Somayeh Akbari
- Department of Physiology, the Medical School, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Masoud Haghani
- Department of Physiology, the Medical School, Shiraz University of Medical Sciences, Shiraz, Iran.,Histomorphometry and Stereology Research Centre, Shiraz University of Medical Sciences, Shiraz, Iran
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Hanoglu L, Velioglu HA, Hanoglu T, Yulug B. Neuroimaging-Guided Transcranial Magnetic and Direct Current Stimulation in MCI: Toward an Individual, Effective and Disease-Modifying Treatment. Clin EEG Neurosci 2023; 54:82-90. [PMID: 34751037 DOI: 10.1177/15500594211052815] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The therapeutic approaches currently applied in Alzheimer's disease (AD) and similar neurodegenerative diseases are essentially based on pharmacological strategies. However, despite intensive research, the effectiveness of these treatments is limited to transient symptomatic effects, and they are still far from exhibiting a true therapeutic effect capable of altering prognosis. The lack of success of such pharmacotherapy-based protocols may be derived from the cases in the majority of trials being too advanced to benefit significantly in therapeutic terms at the clinical level. For neurodegenerative diseases, mild cognitive impairment (MCI) may be an early stage of the disease continuum, including Alzheimer's. Noninvasive brain stimulation (NIBS) techniques have been developed to modulate plasticity in the human cortex in the last few decades. NIBS techniques have made it possible to obtain unique findings concerning brain functions, and design novel approaches to treat various neurological and psychiatric conditions. In addition, its synaptic and cellular neurobiological effects, NIBS is an attractive treatment option in the early phases of neurodegenerative diseases, such as MCI, with its beneficial modifying effects on cellular neuroplasticity. However, there is still insufficient evidence about the potential positive clinical effects of NIBS on MCI. Furthermore, the huge variability of the clinical effects of NIBS limits its use. In this article, we reviewed the combined approach of NIBS with various neuroimaging and electrophysiological methods. Such methodologies may provide a new horizon to the path for personalized treatment, including a more individualized pathophysiology approach which might even define new specific targets for specific symptoms of neurodegenerations.
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Affiliation(s)
- Lutfu Hanoglu
- 218502Istanbul Medipol University School of Medicine, Istanbul, Turkey
| | - Halil Aziz Velioglu
- 218502Istanbul Medipol University, Health Sciences and Technology Research Institute (SABITA), Regenerative and Restorative Medicine Research Center (REMER), functional Imaging and Cognitive-Affective Neuroscience Lab (fINCAN), Istanbul, Turkey
| | - Taha Hanoglu
- 218502Istanbul Medipol University, Health Sciences and Technology Research Institute (SABITA), Regenerative and Restorative Medicine Research Center (REMER), functional Imaging and Cognitive-Affective Neuroscience Lab (fINCAN), Istanbul, Turkey
| | - Burak Yulug
- 450199Alanya Alaaddin Keykubat University School of Medicine, Alanya/Antalya, Turkey
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Su X, Liu H, Wang X, Pan X, Zhang X, Lu X, Zhao L, Chen Y, Shang Y, Wu F, Xiu M. Neuronavigated Repetitive Transcranial Stimulation Improves Neurocognitive Functioning in Veterans with Schizophrenia: A Possible Role of BDNF Polymorphism. Curr Neuropharmacol 2023; 21:142-150. [PMID: 35927806 PMCID: PMC10193754 DOI: 10.2174/1570159x20666220803154820] [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: 01/19/2022] [Revised: 04/24/2022] [Accepted: 06/02/2022] [Indexed: 02/04/2023] Open
Abstract
It has been reported in the previous literatures that high-frequency (HF) neuronavigated repetitive transcranial magnetic stimulation (rTMS) may improve neurocognitive functioning in patients with schizophrenia. Nonetheless, the heterogeneity of the research findings with regards to the effectiveness of HF-rTMS on the neurocognitive functioning in patients with schizophrenia greatly hinders its clinical application. The current study was designed to determine the predictive role of BDNF variants for neurocognitive improvements after rTMS administration in veterans with schizophrenia. 109 hospitalized veterans with schizophrenia were randomly allocated to active HF-rTMS (n=63) or sham stimulation (n=46) over left DLPFC for 4 consecutive weeks. Neurocognitive functions were assessed by using the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) at baseline and at the end of week 4. BDNF polymorphism was genotyped by the technicians. Compared with sham stimulation sessions, the immediate memory performance was significantly increased in active sessions after neuronavigated HF-rTMS administration. In addition, patients with the CC homozygotes demonstrated greater improvement of immediate memory after rTMS treatment, while T allele carriers showed no significant improvement in immediate memory domain relative to baseline performance of immediate memory. Our findings suggest that add-on neuronavigated HF-rTMS is beneficial on immediate memory only in patients with CC homozygotes, but not in T allele carriers. This pilot study provides further evidence for BDNF as a promise biomarker in predicting the clinical response to rTMS stimulation.
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Affiliation(s)
- Xiuru Su
- Hebei Province Veterians hospital, Baoding, China
| | - Haixia Liu
- Department of Psychiatry, Shandong Mental Health Center, Shandong University, Jinan, China
| | - Xuan Wang
- Hebei Province Veterians hospital, Baoding, China
| | - Xiuling Pan
- Hebei Province Veterians hospital, Baoding, China
| | - Xuan Zhang
- Hebei Province Veterians hospital, Baoding, China
| | - Xinyan Lu
- Hebei Province Veterians hospital, Baoding, China
| | - Long Zhao
- Hebei Province Veterians hospital, Baoding, China
| | - Yingnan Chen
- Hebei Province Veterians hospital, Baoding, China
| | - Yujie Shang
- Hebei Province Veterians hospital, Baoding, China
| | - Fengchun Wu
- Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China; Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China
| | - Meihong Xiu
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, China
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Wu C, Yang L, Feng S, Zhu L, Yang L, Liu TCY, Duan R. Therapeutic non-invasive brain treatments in Alzheimer's disease: recent advances and challenges. Inflamm Regen 2022; 42:31. [PMID: 36184623 PMCID: PMC9527145 DOI: 10.1186/s41232-022-00216-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 06/13/2022] [Indexed: 11/10/2022] Open
Abstract
Alzheimer's disease (AD) is one of the major neurodegenerative diseases and the most common form of dementia. Characterized by the loss of learning, memory, problem-solving, language, and other thinking abilities, AD exerts a detrimental effect on both patients' and families' quality of life. Although there have been significant advances in understanding the mechanism underlying the pathogenesis and progression of AD, there is no cure for AD. The failure of numerous molecular targeted pharmacologic clinical trials leads to an emerging research shift toward non-invasive therapies, especially multiple targeted non-invasive treatments. In this paper, we reviewed the advances of the most widely studied non-invasive therapies, including photobiomodulation (PBM), transcranial magnetic stimulation (TMS), transcranial direct current stimulation (tDCS), and exercise therapy. Firstly, we reviewed the pathological changes of AD and the challenges for AD studies. We then introduced these non-invasive therapies and discussed the factors that may affect the effects of these therapies. Additionally, we review the effects of these therapies and the possible mechanisms underlying these effects. Finally, we summarized the challenges of the non-invasive treatments in future AD studies and clinical applications. We concluded that it would be critical to understand the exact underlying mechanisms and find the optimal treatment parameters to improve the translational value of these non-invasive therapies. Moreover, the combined use of non-invasive treatments is also a promising research direction for future studies and sheds light on the future treatment or prevention of AD.
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Affiliation(s)
- Chongyun Wu
- Laboratory of Regenerative Medicine in Sports Science, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China
| | - Luoman Yang
- Department of Anesthesiology, Peking University Third Hospital (PUTH), Beijing, 100083, China
| | - Shu Feng
- Laboratory of Regenerative Medicine in Sports Science, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China
| | - Ling Zhu
- Laboratory of Regenerative Medicine in Sports Science, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China
| | - Luodan Yang
- Department of Neurology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71103, USA. .,Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA.
| | - Timon Cheng-Yi Liu
- Laboratory of Regenerative Medicine in Sports Science, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China.
| | - Rui Duan
- Laboratory of Regenerative Medicine in Sports Science, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China.
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Caballero-Villarraso J, Medina FJ, Escribano BM, Agüera E, Santamaría A, Pascual-Leone A, Túnez I. Mechanisms Involved in Neuroprotective Effects of Transcranial Magnetic Stimulation. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2022; 21:557-573. [PMID: 34370648 DOI: 10.2174/1871527320666210809121922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/05/2021] [Accepted: 04/25/2021] [Indexed: 11/22/2022]
Abstract
Transcranial Magnetic Stimulation (TMS) is widely used in neurophysiology to study cortical excitability. Research over the last few decades has highlighted its added value as a potential therapeutic tool in the treatment of a broad range of psychiatric disorders. More recently, a number of studies have reported beneficial and therapeutic effects for TMS in neurodegenerative conditions and strokes. Yet, despite its recognised clinical applications and considerable research using animal models, the molecular and physiological mechanisms through which TMS exerts its beneficial and therapeutic effects remain unclear. They are thought to involve biochemical-molecular events affecting membrane potential and gene expression. In this aspect, the dopaminergic system plays a special role. This is the most directly and selectively modulated neurotransmitter system, producing an increase in the flux of dopamine (DA) in various areas of the brain after the application of repetitive TMS (rTMS). Other neurotransmitters, such as glutamate and gamma-aminobutyric acid (GABA) have shown a paradoxical response to rTMS. In this way, their levels increased in the hippocampus and striatum but decreased in the hypothalamus and remained unchanged in the mesencephalon. Similarly, there are sufficient evidence that TMS up-regulates the gene expression of BDNF (one of the main brain neurotrophins). Something similar occurs with the expression of genes such as c-Fos and zif268 that encode trophic and regenerative action neuropeptides. Consequently, the application of TMS can promote the release of molecules involved in neuronal genesis and maintenance. This capacity may mean that TMS becomes a useful therapeutic resource to antagonize processes that underlie the previously mentioned neurodegenerative conditions.
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Affiliation(s)
- Javier Caballero-Villarraso
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina y Enfermería, Universidad de Cordoba, Cordoba, Spain.,Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain.,UGC Análisis Clínicos, Hospital Universitario Reina Sofía, Córdoba, Cordoba, Spain
| | - Francisco J Medina
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain
| | - Begoña M Escribano
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain.,Departamento de Biología Celular, Fisiología e Inmunología, Facultad de Veterinaria, Universidad de Córdoba, Cordoba, Spain
| | - Eduardo Agüera
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain.,UGC Neurología, Hospital Universitario Reina Sofía, Córdoba, Cordoba, Spain
| | - Abel Santamaría
- Laboratorio de Aminoácidos Excitadores, Instituto Nacional de Neurología y Neurocirugía, S.S.A. Mexico City, Mexico
| | - Alvaro Pascual-Leone
- Berenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.,Instituto Guttman de Neurorrehabilitación, Universidad Autónoma de Barcelona, Barcelona, Spain
| | - Isaac Túnez
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina y Enfermería, Universidad de Cordoba, Cordoba, Spain.,Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Cordoba, Spain
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11
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Repetitive transcranial magnetic stimulation (rTMS) for multiple neurological conditions in rodent animal models: A systematic review. Neurochem Int 2022; 157:105356. [DOI: 10.1016/j.neuint.2022.105356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/31/2022] [Accepted: 04/28/2022] [Indexed: 12/09/2022]
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12
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Hong Q, Chen H, Sun J, Wang C. Memristive Circuit Implementation of a Self-Repairing Network Based on Biological Astrocytes in Robot Application. IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS 2022; 33:2106-2120. [PMID: 33382661 DOI: 10.1109/tnnls.2020.3041624] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A large number of studies have shown that astrocytes can be combined with the presynaptic terminals and postsynaptic spines of neurons to constitute a triple synapse via an endocannabinoid retrograde messenger to achieve a self-repair ability in the human brain. Inspired by the biological self-repair mechanism of astrocytes, this work proposes a self-repairing neuron network circuit that utilizes a memristor to simulate changes in neurotransmitters when a set threshold is reached. The proposed circuit simulates an astrocyte-neuron network and comprises the following: 1) a single-astrocyte-neuron circuit module; 2) an astrocyte-neuron network circuit; 3) a module to detect malfunctions; and 4) a neuron PR (release probability of synaptic transmission) enhancement module. When faults occur in a synapse, the neuron module becomes silent or near silent because of the low PR of the synapses. The circuit can detect faults automatically. The damaged neuron can be repaired by enhancing the PR of other healthy neurons, analogous to the biological repair mechanism of astrocytes. This mechanism helps to repair the damaged circuit. A simulation of the circuit revealed the following: 1) as the number of neurons in the circuit increases, the self-repair ability strengthens and 2) as the number of damaged neurons in the astrocyte-neuron network increases, the self-repair ability weakens, and there is a significant degradation in the performance of the circuit. The self-repairing circuit was used for a robot, and it effectively improved the robots' performance and reliability.
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13
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Weiler M, Moreno-Castilla P, Starnes HM, Melendez ELR, Stieger KC, Long JM, Rapp PR. Effects of repetitive Transcranial Magnetic Stimulation in aged rats depend on pre-treatment cognitive status: Toward individualized intervention for successful cognitive aging. Brain Stimul 2021; 14:1219-1225. [PMID: 34400378 DOI: 10.1016/j.brs.2021.08.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 08/02/2021] [Accepted: 08/09/2021] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Repetitive Transcranial Magnetic Stimulation (rTMS) has shown initial promise in combating age-related cognitive decline and dementia. The nature and severity of cognitive aging, however, varies markedly between individuals. OBJECTIVE/HYPOTHESIS We hypothesized that the distinct constellation of brain changes responsible for individual differences in cognitive aging might influence the response to rTMS. METHODS Cognitive effects of rTMS were evaluated using a rat model of cognitive aging in which aged rats are classified as Aged-Impaired (AI) or -Unimpaired (AU) relative to young (Y) according to their performance in the Morris water maze. Several weeks later, following presentation of a sample odor in an olfactory recognition task, rats received either sham (Y, n = 9; AU, n = 8; AI, n = 9) or intermittent Theta Burst Stimulation (Y, n = 8; AU, n = 8; AI, n = 9). Memory was tested 24 h later. RESULTS Recognition memory in the sham and stimulated conditions depended on pre-treatment cognitive status in the aged rats. Y and AU sham rats displayed robust odor recognition, whereas sham-treated AI rats exhibited no retention. In contrast, rTMS treated AI rats showed robust retention, comparable in magnitude to Y, whereas the AU stimulated scored at chance. CONCLUSION Our results are consistent with a perspective that the unique neurobiology associated with variability in cognitive aging modulates the response to rTMS. Protocols with documented efficacy in young adults may have unexpected outcomes in aging or neurodegenerative conditions, requiring individualized approaches.
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Affiliation(s)
- Marina Weiler
- Neurocognitive Aging Section, Laboratory of Behavioral Neuroscience, National Institute on Aging, Intramural Research Program, USA
| | - Perla Moreno-Castilla
- Neurocognitive Aging Section, Laboratory of Behavioral Neuroscience, National Institute on Aging, Intramural Research Program, USA
| | - Hannah M Starnes
- Neurocognitive Aging Section, Laboratory of Behavioral Neuroscience, National Institute on Aging, Intramural Research Program, USA
| | - Edward L R Melendez
- Neurocognitive Aging Section, Laboratory of Behavioral Neuroscience, National Institute on Aging, Intramural Research Program, USA
| | - Kevin C Stieger
- Neurocognitive Aging Section, Laboratory of Behavioral Neuroscience, National Institute on Aging, Intramural Research Program, USA
| | - Jeffrey M Long
- Neurocognitive Aging Section, Laboratory of Behavioral Neuroscience, National Institute on Aging, Intramural Research Program, USA
| | - Peter R Rapp
- Neurocognitive Aging Section, Laboratory of Behavioral Neuroscience, National Institute on Aging, Intramural Research Program, USA.
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14
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Aloizou AM, Pateraki G, Anargyros K, Siokas V, Bakirtzis C, Sgantzos M, Messinis L, Nasios G, Peristeri E, Bogdanos DP, Doskas TK, Tzeferakos G, Dardiotis E. Repetitive Transcranial Magnetic Stimulation in the Treatment of Alzheimer's Disease and Other Dementias. Healthcare (Basel) 2021; 9:healthcare9080949. [PMID: 34442086 PMCID: PMC8391181 DOI: 10.3390/healthcare9080949] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/09/2021] [Accepted: 07/17/2021] [Indexed: 11/29/2022] Open
Abstract
Dementia is a debilitating impairment of cognitive functions that affects millions of people worldwide. There are several diseases belonging to the dementia spectrum, most prominently Alzheimer’s disease (AD), vascular dementia (VD), Lewy body dementia (LBD) and frontotemporal dementia (FTD). Repetitive transcranial magnetic stimulation (rTMS) is a safe, non-invasive form of brain stimulation that utilizes a magnetic coil to generate an electrical field and induce numerous changes in the brain. It is considered efficacious for the treatment of various neuropsychiatric disorders. In this paper, we review the available studies involving rTMS in the treatment of these dementia types. The majority of studies have involved AD and shown beneficial effects, either as a standalone, or as an add-on to standard-of-care pharmacological treatment and cognitive training. The dorsolateral prefrontal cortex seems to hold a central position in the applied protocols, but several parameters still need to be defined. In addition, rTMS has shown potential in mild cognitive impairment as well. Regarding the remaining dementias, research is still at preliminary phases, and large, randomized studies are currently lacking.
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Affiliation(s)
- Athina-Maria Aloizou
- Department of Neurology, Laboratory of Neurogenetics, University Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly Biopolis, Mezourlo Hill, 41100 Larissa, Greece; (A.-M.A.); (G.P.); (K.A.); (V.S.); (M.S.); (E.P.)
| | - Georgia Pateraki
- Department of Neurology, Laboratory of Neurogenetics, University Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly Biopolis, Mezourlo Hill, 41100 Larissa, Greece; (A.-M.A.); (G.P.); (K.A.); (V.S.); (M.S.); (E.P.)
| | - Konstantinos Anargyros
- Department of Neurology, Laboratory of Neurogenetics, University Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly Biopolis, Mezourlo Hill, 41100 Larissa, Greece; (A.-M.A.); (G.P.); (K.A.); (V.S.); (M.S.); (E.P.)
| | - Vasileios Siokas
- Department of Neurology, Laboratory of Neurogenetics, University Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly Biopolis, Mezourlo Hill, 41100 Larissa, Greece; (A.-M.A.); (G.P.); (K.A.); (V.S.); (M.S.); (E.P.)
| | - Christos Bakirtzis
- Multiple Sclerosis Center, B’Department of Neurology, AHEPA University Hospital, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece;
| | - Markos Sgantzos
- Department of Neurology, Laboratory of Neurogenetics, University Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly Biopolis, Mezourlo Hill, 41100 Larissa, Greece; (A.-M.A.); (G.P.); (K.A.); (V.S.); (M.S.); (E.P.)
| | - Lambros Messinis
- Neuropsychology Section, Departments of Neurology and Psychiatry, University Hospital of Patras and University of Patras, Medical School, 26504 Patras, Greece;
| | - Grigorios Nasios
- Department of Speech and Language Therapy, School of Health Sciences, University of Ioannina, 45500 Ioannina, Greece;
| | - Eleni Peristeri
- Department of Neurology, Laboratory of Neurogenetics, University Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly Biopolis, Mezourlo Hill, 41100 Larissa, Greece; (A.-M.A.); (G.P.); (K.A.); (V.S.); (M.S.); (E.P.)
| | - Dimitrios P. Bogdanos
- Department of Rheumatology and Clinical Immunology, University General Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly, Viopolis, 40500 Larissa, Greece;
| | | | - Georgios Tzeferakos
- Association for Regional Development and Mental Health (EPAPSY), 15124 Marousi, Greece;
| | - Efthimios Dardiotis
- Department of Neurology, Laboratory of Neurogenetics, University Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly Biopolis, Mezourlo Hill, 41100 Larissa, Greece; (A.-M.A.); (G.P.); (K.A.); (V.S.); (M.S.); (E.P.)
- Correspondence: ; Tel.: +30-241-350-1137 or +30-697-422-4279
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15
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Sun GC, Lee YJ, Lee YC, Yu HF, Wang DC. Exercise prevents the impairment of learning and memory in prenatally phthalate-exposed male rats by improving the expression of plasticity-related proteins. Behav Brain Res 2021; 413:113444. [PMID: 34245761 DOI: 10.1016/j.bbr.2021.113444] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 06/27/2021] [Accepted: 06/30/2021] [Indexed: 12/14/2022]
Abstract
Regular exercise has been identified to facilitate neuroplasticity that maximize functional outcome after brain injuries. Brain-derived neurotrophic factor (BDNF) has emerged as a key facilitator of neuroplasticity after exercise. The activity-regulated cytoskeleton associated protein (Arc) is induced by BDNF and N-methyl-d-aspartic acid receptor (NMDAR), contributing to functional modification of neuroplasticity in the hippocampus. Meanwhile, early-life exposure to neuroendocrine disruptor di-(2-ethylhexyl)-phthalate (DEHP) is a risk factor for behavioral deficits, but the mechanisms responsible for DEHP-induced neurotoxicity are not well understood. The purpose of this study is to investigate whether hippocampal Arc expression is impaired by DEHP exposure and to examine the protective role of exercise in the prenatally DEHP-exposed male rats. Sprague Dawley dams were fed with vehicle or DEHP during gestation. The male offspring were trained to treadmill running for 5 weeks followed by examination of behavioral and biochemical outcomes. The results showed that DEHP-exposed rats exhibited impairment of spatial learning and memory as well as down-regulations of BDNF, NMDAR, Arc, and synaptophysin. Importantly, aerobic exercise during childhood-adolescence prevented the impairment of learning and memory by recovering the expressions of BDNF, NMDAR, Arc, and synaptophysin. These findings suggest that exercise may provide beneficial effects on ameliorating the impairment of neuroplasticity in the prenatally DEHP-exposed male rats at late adolescence.
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Affiliation(s)
- Gwo-Ching Sun
- Department of Anesthesiology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Anesthesiology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Yi-Ju Lee
- Department of Sports Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Yi-Ching Lee
- Department of Food and Beverage Services, Tainan University of Technology, Tainan, Taiwan.
| | - Hsien-Fu Yu
- Department of Sports Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Dean-Chuan Wang
- Department of Sports Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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16
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Antczak J, Rusin G, Słowik A. Transcranial Magnetic Stimulation as a Diagnostic and Therapeutic Tool in Various Types of Dementia. J Clin Med 2021; 10:jcm10132875. [PMID: 34203558 PMCID: PMC8267667 DOI: 10.3390/jcm10132875] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 02/03/2023] Open
Abstract
Dementia is recognized as a healthcare and social burden and remains challenging in terms of proper diagnosis and treatment. Transcranial magnetic stimulation (TMS) is a diagnostic and therapeutic tool in various neurological diseases that noninvasively investigates cortical excitability and connectivity and can induce brain plasticity. This article reviews findings on TMS in common dementia types as well as therapeutic results. Alzheimer’s disease (AD) is characterized by increased cortical excitability and reduced cortical inhibition, especially as mediated by cholinergic neurons and as documented by impairment of short latency inhibition (SAI). In vascular dementia, excitability is also increased. SAI may have various outcomes, which probably reflects its frequent overlap with AD. Dementia with Lewy bodies (DLB) is associated with SAI decrease. Motor cortical excitability is usually normal, reflecting the lack of corticospinal tract involvement. DLB and other dementia types are also characterized by impairment of short interval intracortical inhibition. In frontotemporal dementia, cortical excitability is increased, but SAI is normal. Repetitive transcranial magnetic stimulation has the potential to improve cognitive function. It has been extensively studied in AD, showing promising results after multisite stimulation. TMS with electroencephalography recording opens new possibilities for improving diagnostic accuracy; however, more studies are needed to support the existing data.
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17
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Leocani L, Dalla Costa G, Coppi E, Santangelo R, Pisa M, Ferrari L, Bernasconi MP, Falautano M, Zangen A, Magnani G, Comi G. Repetitive Transcranial Magnetic Stimulation With H-Coil in Alzheimer's Disease: A Double-Blind, Placebo-Controlled Pilot Study. Front Neurol 2021; 11:614351. [PMID: 33679572 PMCID: PMC7930223 DOI: 10.3389/fneur.2020.614351] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/16/2020] [Indexed: 12/14/2022] Open
Abstract
Focal repetitive transcranial magnetic stimulation (rTMS) has been applied to improve cognition in Alzheimer's disease (AD) with conflicting results. We applied rTMS in AD in a pilot placebo-controlled study using the H2-coil. H-coils are suitable for targeting wider neuronal structures compared with standard focal coils, in particular the H2-coil stimulates simultaneously the frontal-parietal-temporal lobes bilaterally. Thirty patients (mean age 70.9 year, SD 8.1; mean MMSE score 16.9, SD 5.5) were randomized to sham or real 10 Hz rTMS stimulation with the H2-coil. Each patient underwent 3 sessions/week for 4 weeks, followed by 4 weeks with maintenance treatment (1 session/week). Primary outcome was improvement of ADAS-cog at 4 and 8 weeks compared with baseline. A trend toward an improved ADAS-cog score over time was observed for patients undergoing real rTMS, with actively treated patients experiencing a mean decrease of −1.01 points at the ADAS-Cog scale score per time point (95% CIs −0.02 to −3.13, p < 0.04). This trend was no longer evident 2 months after the end of treatment. Real rTMS showed no significant effect on MMSE and BDI changes over time. These preliminary findings suggest that rTMS with H-coil is feasible and safe in patients with probable AD and might provide beneficial, even though transient, effects on cognition. This study prompts larger studies in the early stages of AD, combining rTMS and cognitive rehabilitation. Clinical Trial Registration:www.ClinicalTrials.gov, identifier: NCT04562506.
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Affiliation(s)
- Letizia Leocani
- Experimental Neurophysiology Unit, Institute of Experimental Neurology - INSPE, Hospital San Raffaele, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
| | - Gloria Dalla Costa
- Experimental Neurophysiology Unit, Institute of Experimental Neurology - INSPE, Hospital San Raffaele, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
| | - Elisabetta Coppi
- Experimental Neurophysiology Unit, Institute of Experimental Neurology - INSPE, Hospital San Raffaele, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
| | - Roberto Santangelo
- Experimental Neurophysiology Unit, Institute of Experimental Neurology - INSPE, Hospital San Raffaele, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
| | - Marco Pisa
- Experimental Neurophysiology Unit, Institute of Experimental Neurology - INSPE, Hospital San Raffaele, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
| | - Laura Ferrari
- Experimental Neurophysiology Unit, Institute of Experimental Neurology - INSPE, Hospital San Raffaele, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
| | | | - Monica Falautano
- Neuropsychology and Clinical Psychology Service, Hospital San Raffaele, Milan, Italy
| | - Abraham Zangen
- Neuroscience Laboratory, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Giuseppe Magnani
- Memory Disorders Unit, Institute of Experimental Neurology-INSPE, Hospital San Raffaele, Milan, Italy
| | - Giancarlo Comi
- University Vita-Salute San Raffaele, Milan, Italy.,Institute of Experimental Neurology-INSPE, Hospital San Raffaele, Milan, Italy
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18
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Liu Y, Yin M, Luo J, Huang L, Zhang S, Pan C, Hu X. Effects of transcranial magnetic stimulation on the performance of the activities of daily living and attention function after stroke: a randomized controlled trial. Clin Rehabil 2020; 34:1465-1473. [PMID: 32748630 DOI: 10.1177/0269215520946386] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE We aimed to interrogate the effects of transcranial magnetic stimulation (TMS) on the performance in activities of daily living (ADL) and attention function after stroke. DESIGN Randomized controlled trial. SETTING Inpatient rehabilitation hospital. SUBJECTS We randomized 62 stroke patients with attention dysfunction who were randomly assigned into two groups, and two dropped out from each group. The TMS group (n = 29) and a sham group (n = 29), whose mean (SD) was 58.12 (6.72) years. A total of 33 (56.9%) patients had right hemisphere lesion while the rest 25 (43.1%) patients had left hemisphere lesion. INTERVENTIONS Patients in the TMS group received 10 Hz, 700 pulses of TMS, while those in the sham group received sham TMS for four weeks. All the participants underwent comprehensive cognitive training. MAIN MEASURES At baseline, and end of the four-week treatment, the performance in the activities of daily living was assessed by Functional Independence Measure (FIM). On the other side, attention dysfunction was screened by Mini-Mental State Examination (MMSE), while the attention function was assessed by the Trail Making Test-A (TMT-A), Digit Symbol Test (DST) and Digital Span Test (DS). RESULTS Our data showed a significant difference in the post-treatment gains in motor of Functional Independence Measure (13.00 SD 1.69 vs 4.21 SD 2.96), cognition of Functional Independence Measure (4.69 SD 1.56 vs 1.52 SD 1.02), total of Functional Independence Measure (17.69 SD 2.36 vs 5.72 SD 3.12), Mini-Mental State Examination (3.07 SD 1.36 vs 1.21 SD 0.62), time taken in Trail Making Test-A (96.67 SD 25.18 vs 44.28 SD 19.45), errors number in Trail Making Test-A (2.72 SD 1.03 vs 0.86 SD 1.03), Digit Symbol Test (3.76 SD 1.09 vs 0.76 SD 0.87) or Digital Span Test (1.69 SD 0.54 vs 0.90 SD 0.72) between the TMS group and the sham group (P < 0.05). CONCLUSIONS Taken together, we demonstrate that TMS improves the performance in the activities of daily living and attention function in patients with stroke.
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Affiliation(s)
- Yuanwen Liu
- Department of Rehabilitation Medicine, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Mingyu Yin
- Department of Rehabilitation Medicine, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jing Luo
- Department of Rehabilitation Medicine, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Li Huang
- Department of Rehabilitation Medicine, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Shuxian Zhang
- Department of Rehabilitation Medicine, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Cuihuan Pan
- Department of Rehabilitation Medicine, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiquan Hu
- Department of Rehabilitation Medicine, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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19
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Wang F, Zhang C, Hou S, Geng X. Synergistic Effects of Mesenchymal Stem Cell Transplantation and Repetitive Transcranial Magnetic Stimulation on Promoting Autophagy and Synaptic Plasticity in Vascular Dementia. J Gerontol A Biol Sci Med Sci 2020; 74:1341-1350. [PMID: 30256913 DOI: 10.1093/gerona/gly221] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Indexed: 02/07/2023] Open
Abstract
Repetitive transcranial magnetic stimulation (rTMS) and mesenchymal stem cells (MSCs) transplantation both showed therapeutic effects on cognition impairment in vascular dementia (VD) model rats. However, whether these two therapies have synergistic effects and the molecular mechanisms remain unclear. In our present study, rats were randomly divided into six groups: control group, sham operation group, VD group, MSC group, rTMS group, and MSC+rTMS group. The VD model rats were prepared using a modified 2VO method. rTMS treatment was implemented at a frequency of 5 Hz, the stimulation intensity for 0.5 Tesla, 20 strings every day with 10 pulses per string and six treatment courses. The results of the Morris water maze test showed that the learning and memory abilities of the MSC group, rTMS group, and MSC+rTMS group were better than that of the VD group, and the MSC+rTMS group showed the most significant effect. The protein expression levels of brain-derived neurotrophic factor, NR1, LC3-II, and Beclin-1 were the highest and p62 protein was the lowest in the MSC+rTMS group. Our findings demonstrated that rTMS could further enhance the effect of MSC transplantation on VD rats and provided an important basis for the combined application of MSC transplantation and rTMS to treat VD or other neurological diseases.
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Affiliation(s)
- Fei Wang
- Department of Neurology, General Hospital, Tianjin Medical University, China
| | - Chi Zhang
- Department of Neurology, General Hospital, Tianjin Medical University, China
| | - Siyuan Hou
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Xin Geng
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
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20
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Chou YH, Ton That V, Sundman M. A systematic review and meta-analysis of rTMS effects on cognitive enhancement in mild cognitive impairment and Alzheimer's disease. Neurobiol Aging 2019; 86:1-10. [PMID: 31783330 DOI: 10.1016/j.neurobiolaging.2019.08.020] [Citation(s) in RCA: 151] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 08/06/2019] [Accepted: 08/21/2019] [Indexed: 12/23/2022]
Abstract
Repetitive transcranial magnetic stimulation (rTMS), a noninvasive brain stimulation technique, has emerged as a promising treatment for mild cognitive impairment (MCI) and Alzheimer's disease (AD). Currently, however, the effectiveness of this therapy is unclear because of the low statistical power and heterogeneity of previous trials. The purpose of the meta-analysis was to systematically characterize the effectiveness of various combinations of rTMS parameters on different cognitive domains in patients with MCI and AD. Thirteen studies comprising 293 patients with MCI or AD were included in this analysis. Random-effects analysis revealed an overall medium-to-large effect size (0.77) favoring active rTMS over sham rTMS in the improvement of cognitive functions. Subgroup analyses revealed that (1) high-frequency rTMS over the left dorsolateral prefrontal cortex and low-frequency rTMS at the right dorsolateral prefrontal cortex significantly improved memory functions; (2) high-frequency rTMS targeting the right inferior frontal gyrus significantly enhanced executive performance; and (3) the effects of 5-30 consecutive rTMS sessions could last for 4-12 weeks. Potential mechanisms of rTMS effects on cognitive functions are discussed.
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Affiliation(s)
- Ying-Hui Chou
- Department of Psychology, Brain Imaging and TMS Laboratory, University of Arizona, Tucson, USA; Everlyn F McKnight Brain Institute, Arizona Center on Aging, and BIO5 Institute, University of Arizona, Tucson, USA.
| | - Viet Ton That
- Department of Psychology, Brain Imaging and TMS Laboratory, University of Arizona, Tucson, USA
| | - Mark Sundman
- Department of Psychology, Brain Imaging and TMS Laboratory, University of Arizona, Tucson, USA
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Hu Y, Guo TC, Zhang XY, Tian J, Lu YS. Paired associative stimulation improves synaptic plasticity and functional outcomes after cerebral ischemia. Neural Regen Res 2019; 14:1968-1976. [PMID: 31290455 PMCID: PMC6676880 DOI: 10.4103/1673-5374.259618] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Paired associative stimulation is a relatively new non-invasive brain stimulation technique that combines transcranial magnetic stimulation and peripheral nerve stimulation. The effects of paired associative stimulation on the excitability of the cerebral cortex can vary according to the time interval between the transcranial magnetic stimulation and peripheral nerve stimulation. We established a model of cerebral ischemia in rats via transient middle cerebral artery occlusion. We administered paired associative stimulation with a frequency of 0.05 Hz 90 times over 4 weeks. We then evaluated spatial learning and memory using the Morris water maze. Changes in the cerebral ultra-structure and synaptic plasticity were assessed via transmission electron microscopy and a 64-channel multi-electrode array. We measured mRNA and protein expression levels of brain-derived neurotrophic factor and N-methyl-D-aspartate receptor 1 in the hippocampus using a real-time polymerase chain reaction and western blot assay. Paired associative stimulation treatment significantly improved learning and memory in rats subjected to cerebral ischemia. The ultra-structures of synapses in the CA1 area of the hippocampus in rats subjected to cerebral ischemia were restored by paired associative stimulation. Long-term potentiation at synapses in the CA3 and CA1 regions of the hippocampus was enhanced as well. The protein and mRNA expression of brain-derived neurotrophic factor and N-methyl-D-aspartate receptor 1 increased after paired associative stimulation treatment. These data indicate that paired associative stimulation can protect cognition after cerebral ischemia. The observed effect may be mediated by increases in the mRNA and protein expression of brain-derived neurotrophic factor and N-methyl-D-aspartate receptor 1, and by enhanced synaptic plasticity in the CA1 area of the hippocampus. The animal experiments were approved by the Animal Ethics Committee of Tongji Medical College, Huazhong University of Science & Technology, China (approval No. TJ-A20151102) on July 11, 2015.
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Affiliation(s)
- Yan Hu
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology; Department of Rehabilitation Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Tie-Cheng Guo
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei Province, China
| | - Xiang-Yu Zhang
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei Province; Department of Rehabilitation Medicine, the Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Jun Tian
- Department of Rehabilitation Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Yin-Shan Lu
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei Province, China
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22
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Liu SH, Lai YL, Chen BL, Yang FY. Ultrasound Enhances the Expression of Brain-Derived Neurotrophic Factor in Astrocyte Through Activation of TrkB-Akt and Calcium-CaMK Signaling Pathways. Cereb Cortex 2018; 27:3152-3160. [PMID: 27252349 DOI: 10.1093/cercor/bhw169] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Low-intensity pulsed ultrasound (LIPUS) stimulation has been shown to increase the expression of brain-derived neurotrophic factor (BDNF) in astrocytes of an in vitro model and rat brains of an in vivo model; however, their molecular mechanisms are still not well clarified. Here, we investigated the underlying mechanisms of BDNF enhancement by LIPUS in rat cerebral cortex astrocytes. After LIPUS stimulation in astrocytes, the protein and mRNA expressions were measured by western blot and RT-PCR, respectively. The concentration of intracellular calcium was determined spectrophotometrically. The results showed that LIPUS enhanced the phosphorylation of tropomyosin-related kinase B (TrkB) and Akt but had no effect on Erk1/2 phosphorylation. Additionally, LIPUS increased the intracellular concentration of calcium and enhanced the protein levels of calmodulin-dependent kinase (CaMK) II and CaMKIV. LIPUS also activated the phosphorylation of NF-κB-p65 but did not promote the activation of cAMP response element-binding protein (CREB). Taken together, our results suggest that LIPUS stimulation upregulates BDNF production in astrocytes through the activation of NF-κB via the TrkB/PI3K/Akt and calcium/CaMK signaling pathways. BDNF has emerged as a major molecular player in the regulation of neural circuit development and function. Therefore, LIPUS stimulation may play a crucial and beneficial role in neurodegenerative diseases.
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Affiliation(s)
- Shing-Hwa Liu
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Yi-Long Lai
- Department of Biomedical Imaging and Radiological Sciences
| | - Bo-Lin Chen
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Feng-Yi Yang
- Department of Biomedical Imaging and Radiological Sciences.,Biophotonics and Molecular Imaging Research Center.,Biomedical Engineering Research and Development Center, National Yang-Ming University, Taipei, Taiwan
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23
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Combining aerobic exercise and repetitive transcranial magnetic stimulation to improve brain function in health and disease. Neurosci Biobehav Rev 2017; 83:11-20. [PMID: 28951250 DOI: 10.1016/j.neubiorev.2017.09.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 08/02/2017] [Accepted: 09/21/2017] [Indexed: 12/22/2022]
Abstract
The aetiology of various psychiatric and neurological disorders may be partially attributable to impairments in neuroplasticity. Developing novel methods of stimulating neuroplasticity is a promising treatment approach to counterbalance these maladaptive influences and alleviate symptomologies. Two non-pharmacological approaches with significant and direct impacts on neuroplasticity are aerobic exercise and repetitive transcranial magnetic stimulation. Aerobic exercise is associated with the promotion of numerous neurotrophic mechanisms at a molecular and cellular level, which have a broad influence on neuroplasticity. Transcranial magnetic stimulation is a form of non-invasive brain stimulation with the capacity to modulate the synaptic efficacy and connectivity of particular brain networks. This review synthesises extant literature to explore the complementary physiological mechanisms targeted by aerobic exercise and repetitive transcranial magnetic stimulation, and to substantiate the hypothesis that the use of these techniques in tandem may result in synergistic impact on neural mechanisms to achieve a more efficacious therapeutic approach for mental disorders.
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24
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Huang Z, Tan T, Du Y, Chen L, Fu M, Yu Y, Zhang L, Song W, Dong Z. Low-Frequency Repetitive Transcranial Magnetic Stimulation Ameliorates Cognitive Function and Synaptic Plasticity in APP23/PS45 Mouse Model of Alzheimer's Disease. Front Aging Neurosci 2017; 9:292. [PMID: 28955219 PMCID: PMC5600921 DOI: 10.3389/fnagi.2017.00292] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 08/25/2017] [Indexed: 01/05/2023] Open
Abstract
Alzheimer's disease (AD) is a chronic neurodegenerative disease leading to dementia, which is characterized by progressive memory loss and other cognitive dysfunctions. Recent studies have attested that noninvasive repetitive transcranial magnetic stimulation (rTMS) may help improve cognitive function in patients with AD. However, the majority of these studies have focused on the effects of high-frequency rTMS on cognitive function, and little is known about low-frequency rTMS in AD treatment. Furthermore, the potential mechanisms of rTMS on the improvement of learning and memory also remain poorly understood. In the present study, we reported that severe deficits in spatial learning and memory were observed in APP23/PS45 double transgenic mice, a well known mouse model of AD. Furthermore, these behavioral changes were accompanied by the impairment of long-term potentiation (LTP) in the CA1 region of hippocampus, a brain region vital to spatial learning and memory. More importantly, 2-week low-frequency rTMS treatment markedly reversed the impairment of spatial learning and memory as well as hippocampal CA1 LTP. In addition, low-frequency rTMS dramatically reduced amyloid-β precursor protein (APP) and its C-terminal fragments (CTFs) including C99 and C89, as well as β-site APP-cleaving enzyme 1 (BACE1) in the hippocampus. These results indicate that low-frequency rTMS noninvasively and effectively ameliorates cognitive and synaptic functions in a mouse model of AD, and the potential mechanisms may be attributed to rTMS-induced reduction in Aβ neuropathology.
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Affiliation(s)
- Zhilin Huang
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China
| | - Tao Tan
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China
| | - Yehong Du
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China
| | - Long Chen
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China
| | - Min Fu
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China
| | - Yanzhi Yu
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China
| | - Lu Zhang
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China
| | - Weihong Song
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Townsend Family Laboratories, Department of Psychiatry, Brain Research Center, The University of British ColumbiaVancouver, BC, Canada
| | - Zhifang Dong
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China.,Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical UniversityChongqing, China
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25
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Shang Y, Wang X, Shang X, Zhang H, Liu Z, Yin T, Zhang T. Repetitive transcranial magnetic stimulation effectively facilitates spatial cognition and synaptic plasticity associated with increasing the levels of BDNF and synaptic proteins in Wistar rats. Neurobiol Learn Mem 2016; 134 Pt B:369-78. [PMID: 27555233 DOI: 10.1016/j.nlm.2016.08.016] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 07/07/2016] [Accepted: 08/19/2016] [Indexed: 12/27/2022]
Abstract
Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive technique, by which cognitive deficits can be alleviated. Furthermore, rTMS may facilitate learning and memory. However, its underlying mechanism is still little known. The aim of this study was to investigate if the facilitation of spatial cognition and synaptic plasticity, induced by rTMS, is regulated by enhancing pre- and postsynaptic proteins in normal rats. Morris water maze (MWM) test was performed to examine the spatial cognition. The synaptic plasticity, including long-term potentiation (LTP) and depotentiation (DEP), presynaptic plasticity paired-pulse facilitation (PPF), from the hippocampal Schaffer collaterals to CA1 region was subsequently measured using in vivo electrophysiological techniques. The expressions of brain-derived neurotrophic factor (BDNF), presynaptic protein synaptophysin (SYP) and postsynaptic protein NR2B were measured by Western blot. Our data show that the spatial learning/memory and reversal learning/memory in rTMS rats were remarkably enhanced compared to that in the Sham group. Furthermore, LTP and DEP as well as PPF were effectively facilitated by 5Hz-rTMS. Additionally, the expressions of BDNF, SYP and NR2B were significantly increased via magnetic stimulation. The results suggest that rTMS considerably increases the expressions of BDNF, postsynaptic protein NR2B and presynaptic protein SYP, and thereby significantly enhances the synaptic plasticity and spatial cognition in normal animals.
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Affiliation(s)
- Yingchun Shang
- College of Life Sciences and State Key Laboratory of Medicinal Chemical Biology & Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, 300071 Tianjin, PR China
| | - Xin Wang
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Xueliang Shang
- College of Life Sciences and State Key Laboratory of Medicinal Chemical Biology & Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, 300071 Tianjin, PR China
| | - Hui Zhang
- College of Life Sciences and State Key Laboratory of Medicinal Chemical Biology & Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, 300071 Tianjin, PR China
| | - Zhipeng Liu
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Tao Yin
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China.
| | - Tao Zhang
- College of Life Sciences and State Key Laboratory of Medicinal Chemical Biology & Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, 300071 Tianjin, PR China.
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26
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Sheng L, Wang L, Su M, Zhao X, Hu R, Yu X, Hong J, Liu D, Xu B, Zhu Y, Wang H, Hong F. Mechanism of TiO2 nanoparticle-induced neurotoxicity in zebrafish (Danio rerio). ENVIRONMENTAL TOXICOLOGY 2016; 31:163-175. [PMID: 25059219 DOI: 10.1002/tox.22031] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 07/07/2014] [Accepted: 07/13/2014] [Indexed: 06/03/2023]
Abstract
Zebrafish (Danio rerio) has been used historically for evaluating the toxicity of environmental and aqueous toxicants, and there is an emerging literature reporting toxic effects of manufactured nanoparticles (NPs) in zebrafish embryos. Few researches, however, are focused on the neurotoxicity on adult zebrafish after subchronic exposure to TiO2 NPs. This study was designed to evaluate the morphological changes, alterations of neurochemical contents, and expressions of memory behavior-related genes in zebrafish brains caused by exposures to 5, 10, 20, and 40 μg/L TiO2 NPs for 45 consecutive days. Our data indicated that spatial recognition memory and levels of norepinephrine, dopamine, and 5-hydroxytryptamine were significantly decreased and NO levels were markedly elevated, and over proliferation of glial cells, neuron apoptosis, and TiO2 NP aggregation were observed after low dose exposures of TiO2 NPs. Furthermore, the low dose exposures of TiO2 NPs significantly activated expressions of C-fos, C-jun, and BDNF genes, and suppressed expressions of p38, NGF, CREB, NR1, NR2ab, and GluR2 genes. These findings imply that low dose exposures of TiO2 NPs may result in the brain damages in zebrafish, provide a developmental basis for evaluating the neurotoxicity of subchronic exposure, and raise the caution of aquatic application of TiO2 NPs.
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Affiliation(s)
- Lei Sheng
- Medical College of Soochow University, Suzhou, 215123, China
| | - Ling Wang
- Libary of Soochow University, Suzhou, 215021, China
| | - Mingyu Su
- Medical College of Soochow University, Suzhou, 215123, China
- Suzhou Environmental Monitor Center, Suzhou, 215004, China
| | - Xiaoyang Zhao
- Medical College of Soochow University, Suzhou, 215123, China
| | - Renping Hu
- Medical College of Soochow University, Suzhou, 215123, China
| | - Xiaohong Yu
- Medical College of Soochow University, Suzhou, 215123, China
| | - Jie Hong
- Medical College of Soochow University, Suzhou, 215123, China
| | - Dong Liu
- Medical College of Soochow University, Suzhou, 215123, China
| | - Bingqing Xu
- Medical College of Soochow University, Suzhou, 215123, China
| | - Yunting Zhu
- Medical College of Soochow University, Suzhou, 215123, China
| | - Han Wang
- Medical College of Soochow University, Suzhou, 215123, China
| | - Fashui Hong
- Medical College of Soochow University, Suzhou, 215123, China
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27
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Volz MS, Finke C, Harms L, Jurek B, Paul F, Flöel A, Prüss H. Altered paired associative stimulation-induced plasticity in NMDAR encephalitis. Ann Clin Transl Neurol 2016; 3:101-13. [PMID: 26900584 PMCID: PMC4748309 DOI: 10.1002/acn3.277] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 11/19/2015] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE To determine whether neurophysiological mechanisms indicating cortical excitability, long-term potentiation (LTP)-like plasticity, GABAergic and glutamatergic function are altered in patients with anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis and whether they can be helpful as markers of diagnostic assessment, disease progression, and potentially therapy response. METHODS Neurophysiological characterizations of patients with NMDAR encephalitis (n = 34, mean age: 28 ± 11 years; 30 females) and age/gender-matched healthy controls (n = 27, 28.5 ± 10 years; 25 females) were performed using transcranial magnetic stimulation-derived protocols including resting motor threshold, recruitment curve, intracortical facilitation, short intracortical inhibition, and cortical silent period. Paired associative stimulation (PAS) was applied to assess LTP-like mechanisms which are mediated through NMDAR. Moreover, resting state functional connectivity was determined using functional magnetic resonance imaging. RESULTS PAS-induced plasticity differed significantly between groups (P = 0.0056). Cortical excitability, as assessed via motor-evoked potentials after PAS, decreased in patients, whereas it increased in controls indicating malfunctioning of NMDAR in encephalitis patients. Lower PAS-induced plasticity significantly correlated with the modified Rankin Scale (mRS) (r = -0.41; P = 0.0031) and was correlated with lower functional connectivity within the motor network in NMDAR encephalitis patients (P < 0.001, uncorrected). Other neurophysiological parameters were not significantly different between groups. Follow-up assessments were available in six patients and demonstrated parallel improvement of PAS-induced plasticity and mRS. INTERPRETATION Assessment of PAS-induced plasticity may help to determine NMDAR dysfunction and disease severity in NMDAR encephalitis, and might even aid as a sensitive, noninvasive, and well-tolerated "electrophysiological biomarker" to monitor therapy response in the future. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov: Identifier: NCT01865578.
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Affiliation(s)
- Magdalena Sarah Volz
- Department of Gastroenterology, Infectiology and RheumatologyCharité – Universitätsmedizin BerlinGermany
| | - Carsten Finke
- Department of NeurologyCharité – Universitätsmedizin BerlinGermany
- Berlin School of Mind and BrainHumboldt – Universität zu BerlinGermany
| | - Lutz Harms
- Department of NeurologyCharité – Universitätsmedizin BerlinGermany
- Center for Autoimmune Encephalitis and Paraneoplastic Neurological SyndromesCharité – Universitätsmedizin BerlinGermany
| | - Betty Jurek
- German Center for Neurodegenerative Diseases (DZNE)BerlinGermany
| | - Friedemann Paul
- Department of NeurologyCharité – Universitätsmedizin BerlinGermany
- NeuroCure Clinical Research Center and Experimental and Clinical Research Center and Max Delbrueck Center for Molecular MedicineCharité – Universitätsmedizin BerlinGermany
| | - Agnes Flöel
- Department of NeurologyCharité – Universitätsmedizin BerlinGermany
- NeuroCure Clinical Research Center and Experimental and Clinical Research Center and Max Delbrueck Center for Molecular MedicineCharité – Universitätsmedizin BerlinGermany
- Center for Stroke Research BerlinCharité – Universitätsmedizin BerlinGermany
| | - Harald Prüss
- Department of NeurologyCharité – Universitätsmedizin BerlinGermany
- Center for Autoimmune Encephalitis and Paraneoplastic Neurological SyndromesCharité – Universitätsmedizin BerlinGermany
- German Center for Neurodegenerative Diseases (DZNE)BerlinGermany
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28
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Rajan TS, Cuzzocrea S, Bruschetta D, Quartarone A. Repetitive Transcranial Magnetic Stimulation as a Novel Therapy in Animal Models of Traumatic Brain Injury. Methods Mol Biol 2016; 1462:433-443. [PMID: 27604732 DOI: 10.1007/978-1-4939-3816-2_24] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Traumatic brain injury (TBI) in humans causes a broad range of structural damage and functional deficits due to both primary and secondary injury mechanisms. Over the past three decades, animal models have been established to replicate the diverse changes of human TBI, to study the underlying pathophysiology and to develop new therapeutic strategies. However, drugs that were identified as neuroprotective in animal brain injury models were not successful in clinical trials phase II or phase III. Repetitive transcranial magnetic stimulation (rTMS) is a powerful noninvasive approach to excite cortical neurons in humans and animals, widely applied for therapeutic purpose in patients with brain diseases. In addition, recent animal studies showed rTMS as a strong neuroprotective tool. In this chapter, we discuss the rationale and mechanisms related to rTMS as well as therapeutic applications and putative molecular mechanisms. Furthermore, relevant biochemical studies and neuroprotective effect in animal models and possible application of rTMS as a novel treatment for rodent brain injury models are discussed.
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Affiliation(s)
- Thangavelu Soundara Rajan
- Department of Neurosciences, Policlinico Universitario, University of Messina, Messina, Italy
- IRCCS Centro Neurolesi "Bonino Pulejo", Messina, Italy
| | - Salvatore Cuzzocrea
- Department of Biological and Environmental Sciences, University of Messina, Messina, Italy
- Manchester Biomedical Research Center, University of Manchester, Manchester, UK
| | - Daniele Bruschetta
- Department of Biomedical Sciences and Morphological and Functional Images, University of Messina, Messina, Italy
| | - Angelo Quartarone
- Department of Neurosciences, Policlinico Universitario, University of Messina, Messina, Italy.
- IRCCS Centro Neurolesi "Bonino Pulejo", Messina, Italy.
- Department of Physiology and Pharmacology, City University of New York Medical School, New York, NY, USA.
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29
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Zhang N, Xing M, Wang Y, Tao H, Cheng Y. Repetitive transcranial magnetic stimulation enhances spatial learning and synaptic plasticity via the VEGF and BDNF-NMDAR pathways in a rat model of vascular dementia. Neuroscience 2015; 311:284-91. [PMID: 26518460 DOI: 10.1016/j.neuroscience.2015.10.038] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 09/22/2015] [Accepted: 10/21/2015] [Indexed: 12/13/2022]
Abstract
This study aimed to evaluate the effects of repetitive transcranial magnetic stimulation (rTMS) on learning and memory in a rat model of vascular dementia (VaD) and to analyze the associated mechanisms. Bilateral carotid artery occlusion (2-VO) was used to establish a rat model of VaD. High-frequency (5Hz) rTMS was performed on rats for four weeks. Spatial learning and memory abilities were evaluated using the Morris water maze (MWM), and synaptic plasticity in the hippocampus was assessed via long-term potentiation (LTP). Hippocampal expression of vascular endothelial growth factor (VEGF), brain-derived neurotrophic factor (BDNF) and three subunits of the N-methyl-D-aspartic acid receptor (NMDAR), NR1, NR2A and NR2B, was analyzed by Western blotting. Compared with the VaD group, escape latency was decreased (P<0.05) and the time spent in the target quadrant and the percentage of swimming distance within that quadrant were increased (P<0.05) in the rTMS group. LTP at hippocampal CA3-CA1 synapses was enhanced by rTMS (P<0.05). VEGF expression was up-regulated following 2-VO and was further increased by rTMS (P<0.05). BDNF, NR1 and NR2B expression was decreased in the VaD group and increased by rTMS (P<0.05). There were no significant differences in NR2A expression among the three groups. These results suggest that rTMS improved learning and memory in the VaD model rats via the up-regulation of VEGF, BDNF and NMDARs. In addition, NR2B may be more important than NR2A for LTP induction in the hippocampus during rTMS treatment of VaD.
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Affiliation(s)
- N Zhang
- Department of Neurology, Key Laboratory of Post-Traumatic Neuro-Repair and Regeneration in the Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of the Nervous System, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - M Xing
- Department of Neurology, Key Laboratory of Post-Traumatic Neuro-Repair and Regeneration in the Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of the Nervous System, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Y Wang
- Department of Neurology, Tianjin Haihe Hospital, Tianjin, China
| | - H Tao
- Department of Neurology, Key Laboratory of Post-Traumatic Neuro-Repair and Regeneration in the Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of the Nervous System, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Y Cheng
- Department of Neurology, Key Laboratory of Post-Traumatic Neuro-Repair and Regeneration in the Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of the Nervous System, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China.
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30
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Zhang ZC, Luan F, Xie CY, Geng DD, Wang YY, Ma J. Low-frequency transcranial magnetic stimulation is beneficial for enhancing synaptic plasticity in the aging brain. Neural Regen Res 2015. [PMID: 26199608 PMCID: PMC4498353 DOI: 10.4103/1673-5374.158356] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
In the aging brain, cognitive function gradually declines and causes a progressive reduction in the structural and functional plasticity of the hippocampus. Transcranial magnetic stimulation is an emerging and novel neurological and psychiatric tool used to investigate the neurobiology of cognitive function. Recent studies have demonstrated that low-frequency transcranial magnetic stimulation (≤1 Hz) ameliorates synaptic plasticity and spatial cognitive deficits in learning-impaired mice. However, the mechanisms by which this treatment improves these deficits during normal aging are still unknown. Therefore, the current study investigated the effects of transcranial magnetic stimulation on the brain-derived neurotrophic factor signal pathway, synaptic protein markers, and spatial memory behavior in the hippocampus of normal aged mice. The study also investigated the downstream regulator, Fyn kinase, and the downstream effectors, synaptophysin and growth-associated protein 43 (both synaptic markers), to determine the possible mechanisms by which transcranial magnetic stimulation regulates cognitive capacity. Transcranial magnetic stimulation with low intensity (110% average resting motor threshold intensity, 1 Hz) increased mRNA and protein levels of brain-derived neurotrophic factor, tropomyosin receptor kinase B, and Fyn in the hippocampus of aged mice. The treatment also upregulated the mRNA and protein expression of synaptophysin and growth-associated protein 43 in the hippocampus of these mice. In conclusion, brain-derived neurotrophic factor signaling may play an important role in sustaining and regulating structural synaptic plasticity induced by transcranial magnetic stimulation in the hippocampus of aging mice, and Fyn may be critical during this regulation. These responses may change the structural plasticity of the aging hippocampus, thereby improving cognitive function.
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Affiliation(s)
- Zhan-Chi Zhang
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Feng Luan
- Department of Otorhinolaryngology, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Chun-Yan Xie
- Second Surgical Department, Qinghe Public Hospital of Hebei Province, Xingtai, Hebei Province, China
| | - Dan-Dan Geng
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Yan-Yong Wang
- Department of Neurology, First Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China ; Hebei Key Laboratory for Brain Aging and Cognitive Neuroscience, Shijiazhuang, Hebei Province, China
| | - Jun Ma
- Department of Human Anatomy, Hebei Medical University, Shijiazhuang, Hebei Province, China ; Hebei Key Laboratory for Brain Aging and Cognitive Neuroscience, Shijiazhuang, Hebei Province, China
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Lu H, Zhang T, Wen M, Sun L. Impact of repetitive transcranial magnetic stimulation on post-stroke dysmnesia and the role of BDNF Val66Met SNP. Med Sci Monit 2015; 21:761-8. [PMID: 25770310 PMCID: PMC4370352 DOI: 10.12659/msm.892337] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Background Little is known about the effects of low-frequency repetitive transcranial magnetic stimulation (rTMS) on dysmnesia and the impact of brain nucleotide neurotrophic factor (BDNF) Val66Met single-nucleotide polymorphism (SNP). This study investigated the impact of low-frequency rTMS on post-stroke dysmnesia and the impact of BDNF Val66Met SNP. Material/Methods Forty patients with post-stroke dysmnesia were prospectively randomized into the rTMS and sham groups. BDNF Val66Met SNP was determined using restriction fragment length polymorphism. Montreal Cognitive Assessment (MoCA), Loewenstein Occupational Therapy of Cognitive Assessment (LOTCA), and Rivermead Behavior Memory Test (RBMT) scores, as well as plasma BDNF concentrations, were measured at baseline and at 3 days and 2 months post-treatment. Results MoCA, LOTCA, and RBMT scores were higher after rTMS. Three days after treatment, BDNF decreased in the rTMS group but it increased in the sham group (P<0.05). Two months after treatment, RMBT scores in the rTMS group were higher than in the sham group, but not MoCA and LOTCA scores. Conclusions Low-frequency rTMS may improve after-stoke memory through various pathways, which may involve polymorphisms and several neural genes, but not through an increase in BDNF levels.
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Affiliation(s)
- Haitao Lu
- Department of Neurorehabilitation, Capital Medical University School of Rehabilitation Medicine, China Rehabilitation Research Center, Beijing, China (mainland)
| | - Tong Zhang
- Department of Neurorehabilitation, Capital Medical University School of Rehabilitation Medicine, China Rehabilitation Research Center, Beijing, China (mainland)
| | - Mei Wen
- Department of Neurorehabilitation, Institute of Rehabilitation Medicine of China, China Rehabilitation Research Center, Beijing, China (mainland)
| | - Li Sun
- Department of Neurology, China Rehabilitation Research Center, Beijing, China (mainland)
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Effects of repetitive transcranial magnetic stimulation on synaptic plasticity and apoptosis in vascular dementia rats. Behav Brain Res 2015; 281:149-55. [DOI: 10.1016/j.bbr.2014.12.037] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 12/11/2014] [Accepted: 12/15/2014] [Indexed: 11/21/2022]
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Chronic high-frequency repetitive transcranial magnetic stimulation improves age-related cognitive impairment in parallel with alterations in neuronal excitability and the voltage-dependent Ca2+ current in female mice. Neurobiol Learn Mem 2015; 118:1-7. [DOI: 10.1016/j.nlm.2014.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 10/31/2014] [Accepted: 11/02/2014] [Indexed: 01/03/2023]
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The neuroprotection of repetitive transcranial magnetic stimulation pre-treatment in vascular dementia rats. J Mol Neurosci 2015; 56:198-204. [PMID: 25585610 DOI: 10.1007/s12031-014-0480-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 09/01/2014] [Indexed: 10/24/2022]
Abstract
Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive technique that could interfere cortical excitability though brief electric currents induced by alternating magnetic fields from the inductive coil. Currently, it has been applied in many fields of basic and clinical neuro-research. The aims of the present study are to investigate the effect of rTMS pre-treatment on cognitive function in vascular dementia (VaD) rats and further explore the molecular mechanism of rTMS neuroprotection on VaD. We found that rTMS pre-treated VaD rats showed significantly better memory and learning abilities in Morris water maze test compared to the untreated group. Moreover, the mRNA and protein expression levels of BDNF, TrkB, and SYN were significantly higher in the rTMS pre-treated group, indicating that rTMS pre-treatment has neuroprotective effect for VaD, which may have resulted from the increased level of BDNF, TrkB, and SYN in the hippocampal CA1 area.
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Repetitive transcranial magnetic stimulation (rTMS) influences spatial cognition and modulates hippocampal structural synaptic plasticity in aging mice. Exp Gerontol 2014; 58:256-68. [DOI: 10.1016/j.exger.2014.08.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 07/27/2014] [Accepted: 08/26/2014] [Indexed: 01/09/2023]
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Wang F, Chang G, Geng X. NGF and TERT co-transfected BMSCs improve the restoration of cognitive impairment in vascular dementia rats. PLoS One 2014; 9:e98774. [PMID: 24887495 PMCID: PMC4041744 DOI: 10.1371/journal.pone.0098774] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 05/06/2014] [Indexed: 11/25/2022] Open
Abstract
Vascular dementia (VaD) is a mental disorder caused by brain damage due to cerebrovascular disease, and incidence of VaD is rising. To date, there is no known effective cure for VaD, so effort in developing an effective treatment for VaD is of great importance. The differentiation plasticity of BMSCs, in conjunction with its weak immunogenicity, makes manipulated BMSCs an attractive strategy for disease treatment. However, BMSCs often display disabled differentiation, premature aging, and unstable proliferation, reducing their neuroprotective function. These problems may be caused by the lack of telomerase activity in BMSCs. Our results show that NGF-TERT co-transfected BMSCs have a better therapeutic effect than BMSCs lacking NGF and TERT expression, demonstrated by significant improvements in learning and memory in VaD rats. The underlying mechanism might be increased expression of NGF, TrkA and SYN in the hippocampal CA1 area, which has potential implication in advancing therapeutics for VaD.
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Affiliation(s)
- Fei Wang
- Department of Neurology, General Hospital, Tianjin Medical University, Tianjin, China,
| | - Guangming Chang
- Department of clinical laboratory, General Hospital, Tianjin Medical University, Tianjin, China
| | - Xin Geng
- Department of Biochemistry and Molecular Biology, Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin, China
- Key Laboratory of Educational Ministry of China, Tianjin, China
- * E-mail:
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Muller PA, Dhamne SC, Vahabzadeh-Hagh AM, Pascual-Leone A, Jensen FE, Rotenberg A. Suppression of motor cortical excitability in anesthetized rats by low frequency repetitive transcranial magnetic stimulation. PLoS One 2014; 9:e91065. [PMID: 24646791 PMCID: PMC3960125 DOI: 10.1371/journal.pone.0091065] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 02/07/2014] [Indexed: 12/24/2022] Open
Abstract
Repetitive transcranial magnetic stimulation (rTMS) is a widely-used method for modulating cortical excitability in humans, by mechanisms thought to involve use-dependent synaptic plasticity. For example, when low frequency rTMS (LF rTMS) is applied over the motor cortex, in humans, it predictably leads to a suppression of the motor evoked potential (MEP), presumably reflecting long-term depression (LTD) -like mechanisms. Yet how closely such rTMS effects actually match LTD is unknown. We therefore sought to (1) reproduce cortico-spinal depression by LF rTMS in rats, (2) establish a reliable animal model for rTMS effects that may enable mechanistic studies, and (3) test whether LTD-like properties are evident in the rat LF rTMS setup. Lateralized MEPs were obtained from anesthetized Long-Evans rats. To test frequency-dependence of LF rTMS, rats underwent rTMS at one of three frequencies, 0.25, 0.5, or 1 Hz. We next tested the dependence of rTMS effects on N-methyl-D-aspartate glutamate receptor (NMDAR), by application of two NMDAR antagonists. We find that 1 Hz rTMS preferentially depresses unilateral MEP in rats, and that this LTD-like effect is blocked by NMDAR antagonists. These are the first electrophysiological data showing depression of cortical excitability following LF rTMS in rats, and the first to demonstrate dependence of this form of cortical plasticity on the NMDAR. We also note that our report is the first to show that the capacity for LTD-type cortical suppression by rTMS is present under barbiturate anesthesia, suggesting that future neuromodulatory rTMS applications under anesthesia may be considered.
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Affiliation(s)
- Paul A. Muller
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Sameer C. Dhamne
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Andrew M. Vahabzadeh-Hagh
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Berenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Alvaro Pascual-Leone
- Berenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
- Institut Universitari de Neurorehabilitació Guttmann, Universidad Autónoma de Barcelona, Badalona, Spain
| | - Frances E. Jensen
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania Health System, Philadelphia, Pennsylvania, United States of America
| | - Alexander Rotenberg
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Berenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
- * E-mail:
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Chaieb L, Antal A, Ambrus GG, Paulus W. Brain-derived neurotrophic factor: its impact upon neuroplasticity and neuroplasticity inducing transcranial brain stimulation protocols. Neurogenetics 2014; 15:1-11. [DOI: 10.1007/s10048-014-0393-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 02/07/2014] [Indexed: 01/05/2023]
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Low-frequency (1Hz) repetitive transcranial magnetic stimulation (rTMS) reverses Aβ1–42-mediated memory deficits in rats. Exp Gerontol 2013; 48:786-94. [DOI: 10.1016/j.exger.2013.05.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 04/29/2013] [Accepted: 05/02/2013] [Indexed: 01/10/2023]
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Noninvasive strategies to promote functional recovery after stroke. Neural Plast 2013; 2013:854597. [PMID: 23864962 PMCID: PMC3707231 DOI: 10.1155/2013/854597] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 06/02/2013] [Indexed: 01/17/2023] Open
Abstract
Stroke is a common and disabling global health-care problem, which is the third most common cause of death and one of the main causes of acquired adult disability in many countries. Rehabilitation interventions are a major component of patient care. In the last few years, brain stimulation, mirror therapy, action observation, or mental practice with motor imagery has emerged as interesting options as add-on interventions to standard physical therapies. The neural bases for poststroke recovery rely on the concept of plasticity, namely, the ability of central nervous system cells to modify their structure and function in response to external stimuli. In this review, we will discuss recent noninvasive strategies employed to enhance functional recovery in stroke patients and we will provide an overview of neural plastic events associated with rehabilitation in preclinical models of stroke.
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Magnetic stimulation modulates structural synaptic plasticity and regulates BDNF–TrkB signal pathway in cultured hippocampal neurons. Neurochem Int 2013. [DOI: 10.1016/j.neuint.2012.11.010] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Vahabzadeh-Hagh AM, Muller PA, Gersner R, Zangen A, Rotenberg A. Translational neuromodulation: approximating human transcranial magnetic stimulation protocols in rats. Neuromodulation 2012; 15:296-305. [PMID: 22780329 PMCID: PMC5764706 DOI: 10.1111/j.1525-1403.2012.00482.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Transcranial magnetic stimulation (TMS) is a well-established clinical protocol with numerous potential therapeutic and diagnostic applications. Yet, much work remains in the elucidation of TMS mechanisms, optimization of protocols, and in development of novel therapeutic applications. As with many technologies, the key to these issues lies in the proper experimentation and translation of TMS methods to animal models, among which rat models have proven popular. A significant increase in the number of rat TMS publications has necessitated analysis of their relevance to human work. We therefore review the essential principles for the approximation of human TMS protocols in rats as well as specific methods that addressed these issues in published studies. MATERIALS AND METHODS We performed an English language literature search combined with our own experience and data. We address issues that we see as important in the translation of human TMS methods to rat models and provide a summary of key accomplishments in these areas. RESULTS An extensive literature review illustrated the growth of rodent TMS studies in recent years. Current advances in the translation of single, paired-pulse, and repetitive stimulation paradigms to rodent models are presented. The importance of TMS in the generation of data for preclinical trials is also highlighted. CONCLUSIONS Rat TMS has several limitations when considering parallels between animal and human stimulation. However, it has proven to be a useful tool in the field of translational brain stimulation and will likely continue to aid in the design and implementation of stimulation protocols for therapeutic and diagnostic applications.
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Affiliation(s)
- Andrew M. Vahabzadeh-Hagh
- Department of Neurology, Children's Hospital, Harvard Medical School, Boston, MA 02215, USA
- Berenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Paul A. Muller
- Department of Neurology, Children's Hospital, Harvard Medical School, Boston, MA 02215, USA
- Berenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Roman Gersner
- Department of Neurobiology, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Abraham Zangen
- Department of Neurobiology, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Alexander Rotenberg
- Department of Neurology, Children's Hospital, Harvard Medical School, Boston, MA 02215, USA
- Berenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
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Cechetti F, Worm PV, Lovatel G, Moysés F, Siqueira IR, Netto CA. Environmental enrichment prevents behavioral deficits and oxidative stress caused by chronic cerebral hypoperfusion in the rat. Life Sci 2012; 91:29-36. [PMID: 22683434 DOI: 10.1016/j.lfs.2012.05.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 04/25/2012] [Accepted: 05/19/2012] [Indexed: 12/31/2022]
Abstract
AIMS The aim of the present study was to evaluate the neuroprotective effects of environmental enrichment (EE), assessed by cognitive activity in the Morris water maze, and on brain oxidative status, through measurement of macromolecules damage, lipid peroxidation levels, total cellular thiols and antioxidant enzymes in hippocampus, striatum and cerebral cortex. MAIN METHODS Adult male Wistar rats were submitted to the modified permanent bilateral occlusion of the common carotid arteries (2VO) method, with right common carotid artery being first occluded, and tested three months after the ischemic event. Cognitive and physical stimulation, named Environmental Enrichment, consisted of one-hour sessions run 3 times per week during 12weeks, following two different stimulation protocols: pre-ischemia and pre+post-ischemia. Rats were then tested for both reference and working spatial memory tasks in the water maze and later sacrificed for measurement of oxidative stress parameters. KEY FINDINGS A significant cognitive deficit was found in both spatial tasks after hypoperfusion; this effect was reversed in the 2VO enriched group. Moreover, hippocampal oxidative damage and antioxidant enzyme activity were decreased by environmental enrichment. SIGNIFICANCE These results suggest that both stimulation protocols exert a neuroprotective effect against the cognitive impairment and the reduction of biomarkers for oxidative damage caused by chronic cerebral hypoperfusion.
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Affiliation(s)
- Fernanda Cechetti
- Programa de Pós-graduação em Neurociências, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Brazil.
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Neuroprotective effects of extremely low-frequency electromagnetic fields on a Huntington's disease rat model: effects on neurotrophic factors and neuronal density. Neuroscience 2012; 209:54-63. [DOI: 10.1016/j.neuroscience.2012.02.034] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Revised: 02/09/2012] [Accepted: 02/17/2012] [Indexed: 01/30/2023]
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Repetitive transcranial magnetic stimulation enhances BDNF-TrkB signaling in both brain and lymphocyte. J Neurosci 2011; 31:11044-54. [PMID: 21795553 DOI: 10.1523/jneurosci.2125-11.2011] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Repetitive transcranial magnetic stimulation (rTMS) induces neuronal long-term potentiation or depression. Although brain-derived neurotrophic factor (BDNF) and its cognate tyrosine receptor kinase B (TrkB) contribute to the effects of rTMS, their precise role and underlying mechanism remain poorly understood. Here we show that daily 5 Hz rTMS for 5 d improves BDNF-TrkB signaling in rats by increasing the affinity of BDNF for TrkB, which results in higher tyrosine-phosphorylated TrkB, increased recruitment of PLC-γ1 and shc/N-shc to TrkB, and heightened downstream ERK2 and PI-3K activities in prefrontal cortex and in lymphocytes. The elevated BDNF-TrkB signaling is accompanied by an increased association between the activated TrkB and NMDA receptor (NMDAR). In normal human subjects, 5 d rTMS to motor cortex decreased resting motor threshold, which correlates with heightened BDNF-TrkB signaling and intensified TrkB-NMDAR association in lymphocytes. These findings suggest that rTMS to cortex facilitates BDNF-TrkB-NMDAR functioning in both cortex and lymphocytes.
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Jiwa NS, Garrard P, Hainsworth AH. Experimental models of vascular dementia and vascular cognitive impairment: a systematic review. J Neurochem 2010; 115:814-28. [PMID: 20731763 DOI: 10.1111/j.1471-4159.2010.06958.x] [Citation(s) in RCA: 189] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Vascular cognitive impairment (VCI) encompasses vascular dementia and is the second most common cause of dementing illness after Alzheimer's disease. The main causes of VCI are: cerebral small vessel disease; multi-infarct dementia; strategic infarct (i.e. located in a functionally-critical brain area); haemorrhage/microbleed; angiopathy (including cerebral amyloid angiopathy); severe hypoperfusion (e.g. cardiac arrhythmia); and hereditary vasculopathy (e.g. cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, CADASIL). In this systematic analysis, we aimed to relate cognitive and neuropathological features of experimental models to clinical VCI. We extracted data from 107 studies covering 16 models. These included: brief global ischaemic insults (in rats, mice or gerbils); chronic global hypoperfusion (rats, mice, gerbils); chronic hypertension (in primates or stroke-prone, spontaneously-hypertensive rats); multiple ischaemic lesions because of intra-vascular emboli (in rodents, rabbits or primates); strategic ischaemic lesions (in rats or mini-pigs); generalised vasculopathies, because of mutant Notch3, hyperhomocysteinaemia, experimental diabetes mellitus or lack of cerebral vasodilator M(5) receptors (rats or mice). Most cognitive testing showed deficits in working and reference memory. The lesions observed were microinfarcts, diffuse white matter lesions, hippocampal neuronal death, focal ischaemic lesions and micro-haemorrhages. The most-used model was bilateral carotid artery occlusion in rats, leading to chronic hypoperfusion and white matter injury.
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Affiliation(s)
- Nadim S Jiwa
- Clinical Neuroscience, Division of Clinical Sciences, St George's University of London, London, UK
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