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Coelho DRA, Salvi JD, Vieira WF, Cassano P. Inflammation in obsessive-compulsive disorder: A literature review and hypothesis-based potential of transcranial photobiomodulation. J Neurosci Res 2024; 102:e25317. [PMID: 38459770 DOI: 10.1002/jnr.25317] [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: 08/01/2023] [Revised: 02/21/2024] [Accepted: 02/25/2024] [Indexed: 03/10/2024]
Abstract
Obsessive-compulsive disorder (OCD) is a disabling neuropsychiatric disorder that affects about 2%-3% of the global population. Despite the availability of several treatments, many patients with OCD do not respond adequately, highlighting the need for new therapeutic approaches. Recent studies have associated various inflammatory processes with the pathogenesis of OCD, including alterations in peripheral immune cells, alterations in cytokine levels, and neuroinflammation. These findings suggest that inflammation could be a promising target for intervention. Transcranial photobiomodulation (t-PBM) with near-infrared light is a noninvasive neuromodulation technique that has shown potential for several neuropsychiatric disorders. However, its efficacy in OCD remains to be fully explored. This study aimed to review the literature on inflammation in OCD, detailing associations with T-cell populations, monocytes, NLRP3 inflammasome components, microglial activation, and elevated proinflammatory cytokines such as TNF-α, CRP, IL-1β, and IL-6. We also examined the hypothesis-based potential of t-PBM in targeting these inflammatory pathways of OCD, focusing on mechanisms such as modulation of oxidative stress, regulation of immune cell function, reduction of proinflammatory cytokine levels, deactivation of neurotoxic microglia, and upregulation of BDNF gene expression. Our review suggests that t-PBM could be a promising, noninvasive intervention for OCD, with the potential to modulate underlying inflammatory processes. Future research should focus on randomized clinical trials to assess t-PBM's efficacy and optimal treatment parameters in OCD. Biomarker analyses and neuroimaging studies will be important in understanding the relationship between inflammatory modulation and OCD symptom improvement following t-PBM sessions.
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Affiliation(s)
- David Richer Araujo Coelho
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
- Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Joshua D Salvi
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
- Center for OCD and Related Disorders, Massachusetts General Hospital, Boston, Massachusetts, USA
- McLean Hospital, Belmont, Massachusetts, USA
| | - Willians Fernando Vieira
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Paolo Cassano
- Division of Neuropsychiatry and Neuromodulation, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
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2
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Truong NCD, Wang X, Liu H. Temporal and spectral analyses of EEG microstate reveals neural effects of transcranial photobiomodulation on the resting brain. Front Neurosci 2023; 17:1247290. [PMID: 37916179 PMCID: PMC10616257 DOI: 10.3389/fnins.2023.1247290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 09/25/2023] [Indexed: 11/03/2023] Open
Abstract
Introduction The quantification of electroencephalography (EEG) microstates is an effective method for analyzing synchronous neural firing and assessing the temporal dynamics of the resting state of the human brain. Transcranial photobiomodulation (tPBM) is a safe and effective modality to improve human cognition. However, it is unclear how prefrontal tPBM neuromodulates EEG microstates both temporally and spectrally. Methods 64-channel EEG was recorded from 45 healthy subjects in both 8-min active and sham tPBM sessions, using a 1064-nm laser applied to the right forehead of the subjects. After EEG data preprocessing, time-domain EEG microstate analysis was performed to obtain four microstate classes for both tPBM and sham sessions throughout the pre-, during-, and post-stimulation periods, followed by extraction of the respective microstate parameters. Moreover, frequency-domain analysis was performed by combining multivariate empirical mode decomposition with the Hilbert-Huang transform. Results Statistical analyses revealed that tPBM resulted in (1) a significant increase in the occurrence of microstates A and D and a significant decrease in the contribution of microstate C, (2) a substantial increase in the transition probabilities between microstates A and D, and (3) a substantial increase in the alpha power of microstate D. Discussion These findings confirm the neurophysiological effects of tPBM on EEG microstates of the resting brain, particularly in class D, which represents brain activation across the frontal and parietal regions. This study helps to better understand tPBM-induced dynamic alterations in EEG microstates that may be linked to the tPBM mechanism of action for the enhancement of human cognition.
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Affiliation(s)
| | | | - Hanli Liu
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, United States
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Wu C, Su B, Xin N, Tang J, Xiao J, Luo H, Wei D, Luo F, Sun J, Fan H. An upconversion nanoparticle-integrated fibrillar scaffold combined with a NIR-optogenetic strategy to regulate neural cell performance. J Mater Chem B 2023; 11:430-440. [PMID: 36524427 DOI: 10.1039/d2tb02327j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
Optogenetics using light-sensitive proteins such as calcium transport channel rhodopsin (CatCh) opens up new possibilities for non-invasive remote manipulation of neural function. However, current optogenetic approaches for neurological disorder therapies rely on visible light excitation and are rarely applied to neurogenesis and nerve regeneration. Herein, we propose a new strategy for tissue engineering which combines optogenetic technology and biomimetic nerve scaffolds. Upconversion nanoparticles (UCNPs) were synthesized and integrated with oriented fibrillar PCL membranes with a collagen coating to establish neuro-matrix interfaces. Benefiting from the excellent bioactivity, oriented fibrillation and NIR-photoresponsivity, the CatCh-transfected PC12 cells on these interfaces exhibited enhanced cell elongation and neurite extension, as well as upregulated neurogenesis upon NIR excitation. Furthermore, a UCNP-integrated scaffold as an optogenetic actuator allowed NIR to penetrate dermal tissues to mediate neural activation, with an efficiency comparable to that of a 470 nm blue light. Compared with current visible light-excited optogenetics, our composite scaffold-mediated NIR stimulation addresses the problem of tissue penetration and will enable less-invasive neurofunctional manipulation, with the potential for remote therapy.
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Affiliation(s)
- Chengheng Wu
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China. .,Institute of Regulatory Science for Medical Devices, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Borui Su
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China.
| | - Nini Xin
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China.
| | - Jiajia Tang
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China.
| | - Jiamei Xiao
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China.
| | - Hongrong Luo
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China.
| | - Dan Wei
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China.
| | - Fang Luo
- The Center of Gerontology and Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Jing Sun
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China.
| | - Hongsong Fan
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, 610064, Sichuan, China.
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Liu X, Zhang G, Wei P, Hao L, Zhong L, Zhong K, Liu C, Liu P, Feng Q, Wang S, Zhang J, Tian R, Zhou L. 3D-printed collagen/silk fibroin/secretome derived from bFGF-pretreated HUCMSCs scaffolds enhanced therapeutic ability in canines traumatic brain injury model. Front Bioeng Biotechnol 2022; 10:995099. [PMID: 36091465 PMCID: PMC9449499 DOI: 10.3389/fbioe.2022.995099] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
The regeneration of brain tissue poses a great challenge because of the limited self-regenerative capabilities of neurons after traumatic brain injury (TBI). For this purpose, 3D-printed collagen/silk fibroin/secretome derived from human umbilical cord blood mesenchymal stem cells (HUCMSCs) pretreated with bFGF scaffolds (3D-CS-bFGF-ST) at a low temperature were prepared in this study. From an in vitro perspective, 3D-CS-bFGF-ST showed good biodegradation, appropriate mechanical properties, and good biocompatibility. In regard to vivo, during the tissue remodelling processes of TBI, the regeneration of brain tissues was obviously faster in the 3D-CS-bFGF-ST group than in the other two groups (3D-printed collagen/silk fibroin/secretome derived from human umbilical cord blood mesenchymal stem cells (3D-CS-ST) group and TBI group) by motor assay, histological analysis, and immunofluorescence assay. Satisfactory regeneration was achieved in the two 3D-printed scaffold-based groups at 6 months postsurgery, while the 3D-CS-bFGF-ST group showed a better outcome than the 3D-CS-ST group.
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Affiliation(s)
- Xiaoyin Liu
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Guijun Zhang
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Pan Wei
- Department of Neurosurgery, The First People’s Hospital of Long Quan yi District, Chengdu, China
| | - Lifang Hao
- Department of Radiology, Liao Cheng The Third People’s Hospital, Liaocheng, China
| | - Lin Zhong
- The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Kunhon Zhong
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Chang Liu
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Peng Liu
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Qingbo Feng
- Department of Liver Surgery and Liver Transplantation, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Shan Wang
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Jianyong Zhang
- Department of General Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
- *Correspondence: Jianyong Zhang, ; Rui Tian, ; Liangxue Zhou,
| | - Rui Tian
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
- *Correspondence: Jianyong Zhang, ; Rui Tian, ; Liangxue Zhou,
| | - Liangxue Zhou
- Department of Neurosurgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
- *Correspondence: Jianyong Zhang, ; Rui Tian, ; Liangxue Zhou,
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Truong NCD, Wang X, Wanniarachchi H, Liu H. Enhancement of Frequency-Specific Hemodynamic Power and Functional Connectivity by Transcranial Photobiomodulation in Healthy Humans. Front Neurosci 2022; 16:896502. [PMID: 35757526 PMCID: PMC9226485 DOI: 10.3389/fnins.2022.896502] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/09/2022] [Indexed: 12/03/2022] Open
Abstract
Transcranial photobiomodulation (tPBM) has been considered a safe and effective brain stimulation modality being able to enhance cerebral oxygenation and neurocognitive function. To better understand the underlying neurophysiological effects of tPBM in the human brain, we utilized a 111-channel functional near infrared spectroscopy (fNIRS) system to map cerebral hemodynamic responses over the whole head to 8-min tPBM with 1,064-nm laser given on the forehead of 19 healthy participants. Instead of analyzing broad-frequency hemodynamic signals (0–0.2 Hz), we investigated frequency-specific effects of tPBM on three infra-slow oscillation (ISO) components consisting of endogenic, neurogenic, and myogenic vasomotions. Significant changes induced by tPBM in spectral power of oxygenated hemoglobin concentration (Δ[HbO]), functional connectivity (FC), and global network metrics at each of the three ISO frequency bands were identified and mapped topographically for frequency-specific comparisons. Our novel findings revealed that tPBM significantly increased endogenic Δ[HbO] powers over the right frontopolar area near the stimulation site. Also, we demonstrated that tPBM enabled significant enhancements of endogenic and myogenic FC across cortical regions as well as of several global network metrics. These findings were consistent with recent reports and met the expectation that myogenic oscillation is highly associated with endothelial activity, which is stimulated by tPBM-evoked nitric oxide (NO) release.
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Affiliation(s)
- Nghi Cong Dung Truong
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, United States
| | - Xinlong Wang
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, United States
| | - Hashini Wanniarachchi
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, United States
| | - Hanli Liu
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, United States
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6
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De I, Sharma P, Singh M. Emerging approaches of neural regeneration using physical stimulations solely or coupled with smart piezoelectric nano-biomaterials. Eur J Pharm Biopharm 2022; 173:73-91. [DOI: 10.1016/j.ejpb.2022.02.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 02/18/2022] [Accepted: 02/22/2022] [Indexed: 01/20/2023]
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Pretreatment with combined low-level laser therapy and methylene blue improves learning and memory in sleep-deprived mice. Lasers Med Sci 2022; 37:2403-2412. [PMID: 35059872 DOI: 10.1007/s10103-021-03497-6] [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: 08/14/2021] [Accepted: 12/13/2021] [Indexed: 10/19/2022]
Abstract
Low-level laser therapy (LLLT) and methylene blue (MB) were proved to have neuroprotective effects. In this study, we evaluated the preventive effects of LLLT and MB alone and in combination to examine their efficacy against sleep deprivation (SD)-induced cognitive impairment. Sixty Balb/c male mice were randomly divided into five groups as follows: wide platform (WP), SD, LLLT, MB, LMB (treatment with both LLLT and MB). Daily MB (0.5 mg/kg) was injected for ten consecutive days. An 810-nm, 10-Hz pulsed laser was used in LLLT every other day. We used the T-maze test, social interaction test (SIT), and shuttle box to assess learning and memory and PSD-95, GAP-43, and synaptophysin (SYN) markers to examine synaptic proteins levels in the hippocampus. Our results showed that SD decreased alternation rate in the T-maze test, sociability and social novelty in SIT, and memory index in the shuttle box. Single treatments were not able to reverse these in most of the behavioral parameters. However, behavioral tests showed a significant difference between combined therapy and the SD group. The levels of synaptic plasticity markers were also significantly reduced after SD. There was a significant difference between the MB group and SD animals in GAP-43 and SYN biomarkers. Combination treatment with LLLT and MB also increased GAP-43, PSD-95, and SYN compared to the SD group. We found that the combined use of LLLT and MB pretreatment is more effective in protecting SD-induced cognitive impairment, which may be imparted via modulation of synaptic proteins.
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8
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Cardoso FDS, Gonzalez-Lima F, Gomes da Silva S. Photobiomodulation for the aging brain. Ageing Res Rev 2021; 70:101415. [PMID: 34325071 DOI: 10.1016/j.arr.2021.101415] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 12/15/2022]
Abstract
Longevity is one of the great triumphs of humanity. Worldwide, the elderly is the fastest growing segment of the population. As a consequence, the number of cases of age-related cognitive decline and neurological diseases associated with aging, such as Alzheimer's and Parkinson's, has been increasing. Among the non-pharmacological interventions studied for the treatment or prevention of age-related neurocognitive impairment, photobiomodulation (PBM) has gained prominence for its beneficial effects on brain functions relevant to aging brains. In animal models, the neuroprotective and neuromodulatory capacity of PBM has been observed. Studies using both animals and humans have shown promising metabolic and hemodynamic effects of PBM on the brain, such as improved mitochondrial and vascular functions. Studies in humans have shown that PBM can improve electrophysiological activity and cognitive functions such as attention, learning, memory and mood in older people. In this paper we will review the main brain effects of PBM during aging, discuss its mechanisms of action relevant to the aging brain, and call for more controlled studies in older populations.
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Affiliation(s)
- Fabrízio Dos Santos Cardoso
- Núcleo de Pesquisas Tecnológicas, Universidade de Mogi das Cruzes, Mogi das Cruzes, SP, Brazil; Department of Psychology and Institute for Neuroscience, University of Texas at Austin, Austin, TX, USA
| | - F Gonzalez-Lima
- Department of Psychology and Institute for Neuroscience, University of Texas at Austin, Austin, TX, USA
| | - Sérgio Gomes da Silva
- Núcleo de Pesquisas Tecnológicas, Universidade de Mogi das Cruzes, Mogi das Cruzes, SP, Brazil; Centro Universitário UNIFAMINAS (UNIFAMINAS), Muriaé, MG, Brazil; Hospital do Câncer de Muriaé, Fundação Cristiano Varella (FCV), Muriaé, MG, Brazil.
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9
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Zangari A, Micheli D, Galeazzi R, Tozzi A, Balzano V, Bellavia G, Caristo ME. Photons detected in the active nerve by photographic technique. Sci Rep 2021; 11:3022. [PMID: 33542392 PMCID: PMC7862265 DOI: 10.1038/s41598-021-82622-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/08/2021] [Indexed: 01/30/2023] Open
Abstract
The nervous system is one of the most complex expressions of biological evolution. Its high performance mostly relies on the basic principle of the action potential, a sequential activation of local ionic currents along the neural fiber. The implications of this essentially electrical phenomenon subsequently emerged in a more comprehensive electromagnetic perspective of neurotransmission. Several studies focused on the possible role of photons in neural communication and provided evidence of the transfer of photons through myelinated axons. A hypothesis is that myelin sheath would behave as an optical waveguide, although the source of photons is controversial. In a previous work, we proposed a model describing how photons would arise at the node of Ranvier. In this study we experimentally detected photons in the node of Ranvier by Ag+ photoreduction measurement technique, during electrically induced nerve activity. Our results suggest that in association to the action potential a photonic radiation takes place in the node.
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Affiliation(s)
- Andrea Zangari
- Pediatric Surgery and Urology Unit, Azienda Ospedaliera San Camillo Forlanini, Circonvallazione Gianicolense 87, 00152, Rome, Italy
| | - Davide Micheli
- Wireless Access Engineering Department, TIM S.P.A., Via Oriolo Romano, 240, 00189, Rome, Italy
| | - Roberta Galeazzi
- Departement of Life and Environmental Science, Università Politecnica delle Marche, via Brecce Bianche, 60131, Ancona, Italy.
| | - Antonio Tozzi
- UOC Fisica Sanitaria, Azienda USL Toscana Sud Est, via Senese 161, 58100, Grosseto, Italy
| | - Vittoria Balzano
- UOC Anatomy and Pathological Histology, Azienda Ospedaliera San Camillo Forlanini, Circonvallazione Gianicolense 87, 00152, Rome, Italy
| | | | - Maria Emiliana Caristo
- Centro Ricerche Sperimentali, Università Cattolica del Sacro Cuore, Largo Agostino Gemelli, 1, 00168, Rome, Italy
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Sun H, Yu D, Guan Y, Du Z, Ren J, Qu X. Wireless near-infrared electrical stimulation of neurite outgrowth. Chem Commun (Camb) 2019; 55:9833-9836. [PMID: 31363722 DOI: 10.1039/c9cc03537k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein, through using electropolymerized pyrrole (PPy) to coat near-infrared upconversion nanoparticles (UCNPs) on an indium tin oxide (ITO) electrode, the as-prepared PPy/UCNPs photoelectrode could generate an interfacial electric field, release rare earth ions and induce reactive oxygen species (ROS) in PC12 cells under NIR irradiation, which could realize wireless neurite development and outgrowth.
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Affiliation(s)
- Hanjun Sun
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
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Brain Photobiomodulation Therapy: a Narrative Review. Mol Neurobiol 2018; 55:6601-6636. [PMID: 29327206 DOI: 10.1007/s12035-017-0852-4] [Citation(s) in RCA: 232] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 12/19/2017] [Indexed: 12/20/2022]
Abstract
Brain photobiomodulation (PBM) therapy using red to near-infrared (NIR) light is an innovative treatment for a wide range of neurological and psychological conditions. Red/NIR light is able to stimulate complex IV of the mitochondrial respiratory chain (cytochrome c oxidase) and increase ATP synthesis. Moreover, light absorption by ion channels results in release of Ca2+ and leads to activation of transcription factors and gene expression. Brain PBM therapy enhances the metabolic capacity of neurons and stimulates anti-inflammatory, anti-apoptotic, and antioxidant responses, as well as neurogenesis and synaptogenesis. Its therapeutic role in disorders such as dementia and Parkinson's disease, as well as to treat stroke, brain trauma, and depression has gained increasing interest. In the transcranial PBM approach, delivering a sufficient dose to achieve optimal stimulation is challenging due to exponential attenuation of light penetration in tissue. Alternative approaches such as intracranial and intranasal light delivery methods have been suggested to overcome this limitation. This article reviews the state-of-the-art preclinical and clinical evidence regarding the efficacy of brain PBM therapy.
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Lee HI, Lee SW, Kim NG, Park KJ, Choi BT, Shin YI, Shin HK. Low-level light emitting diode (LED) therapy suppresses inflammasome-mediated brain damage in experimental ischemic stroke. JOURNAL OF BIOPHOTONICS 2017; 10:1502-1513. [PMID: 28164443 DOI: 10.1002/jbio.201600244] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/12/2016] [Accepted: 01/12/2017] [Indexed: 06/06/2023]
Abstract
Use of photostimulation including low-level light emitting diode (LED) therapy has broadened greatly in recent years because it is compact, portable, and easy to use. Here, the effects of photostimulation by LED (610 nm) therapy on ischemic brain damage was investigated in mice in which treatment started after a stroke in a clinically relevant setting. The mice underwent LED therapy (20 min) twice a day for 3 days, commencing at 4 hours post-ischemia. LED therapy group generated a significantly smaller infarct size and improvements in neurological function based on neurologic test score. LED therapy profoundly reduced neuroinflammatory responses including neutrophil infiltration and microglia activation in the ischemic cortex. LED therapy also decreased cell death and attenuated the NLRP3 inflammasome, in accordance with down-regulation of pro-inflammatory cytokines IL-1β and IL-18 in the ischemic brain. Moreover, the mice with post-ischemic LED therapy showed suppressed TLR-2 levels, MAPK signaling and NF-kB activation. These findings suggest that by suppressing the inflammasome, LED therapy can attenuate neuroinflammatory responses and tissue damage following ischemic stroke. Therapeutic interventions targeting the inflammasome via photostimulation with LED may be a novel approach to ameliorate brain injury following ischemic stroke. Effect of post-ischemic low-level light emitting diode therapy (LED-T) on infarct reduction was mediated by inflammasome suppression.
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Affiliation(s)
- Hae In Lee
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
| | - Sae-Won Lee
- Korean Medical Science Research Center for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
| | - Nam Gyun Kim
- Medical Research Center of Color Seven, Seoul 137-867, Republic of Korea
| | - Kyoung-Jun Park
- Medical Research Center of Color Seven, Seoul 137-867, Republic of Korea
| | - Byung Tae Choi
- Korean Medical Science Research Center for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
- Division of Meridian and Structural Medicine, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
| | - Yong-Il Shin
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Gyeongnam 626-770, Republic of Korea
| | - Hwa Kyoung Shin
- Korean Medical Science Research Center for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
- Division of Meridian and Structural Medicine, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam 626-870, Republic of Korea
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Guirao V, Martí-Sistac O, DeGregorio-Rocasolano N, Ponce J, Dávalos A, Gasull T. Specific rescue by ortho-hydroxy atorvastatin of cortical GABAergic neurons from previous oxygen/glucose deprivation: role of pCREB. J Neurochem 2017; 143:359-374. [PMID: 28881028 DOI: 10.1111/jnc.14210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 08/11/2017] [Accepted: 08/30/2017] [Indexed: 12/15/2022]
Abstract
The statin atorvastatin (ATV) given as a post-treatment has been reported beneficial in stroke, although the mechanisms involved are not well understood so far. Here, we investigated in vitro the effect of post-treatment with ATV and its main bioactive metabolite ortho-hydroxy ATV (o-ATV) on neuroprotection after oxygen and glucose deprivation (OGD), and the role of the pro-survival cAMP response element-binding protein (CREB). Post-OGD treatment of primary cultures of rat cortical neurons with o-ATV, but not ATV, provided neuroprotection to a specific subset of cortical neurons that were large and positive for glutamic acid decarboxylase (large-GAD(+) neurons, GABAergic). Significantly, only these GABAergic neurons showed an increase in phosphorylated CREB (pCREB) early after neuronal cultures were treated post-OGD with o-ATV. We found that o-ATV, but not ATV, increased the neuronal uptake of glutamate from the medium; this provides a rationale for the specific effect of o-ATV on pCREB in large-GABAergic neurons, which have a higher ratio of synaptic (pCREB-promoting) vs extrasynaptic (pCREB-reducing) N-methyl-D-aspartate (NMDA) receptors (NMDAR) than that of small-non-GABAergic neurons. When we pharmacologically increased pCREB levels post-OGD in non-GABAergic neurons, through the selective activation of synaptic NMDAR, we observed as well long-lasting neuronal survival. We propose that the statin metabolite o-ATV given post-OGD boosts the intrinsic pro-survival factor pCREB in large-GABAergic cortical neurons in vitro, this contributing to protect them from OGD.
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Affiliation(s)
- Verónica Guirao
- Cellular and Molecular Neurobiology Research Group, Department of Neurosciences, Germans Trias i Pujol Research Institute, Badalona, Catalonia, Spain
| | - Octavi Martí-Sistac
- Cellular and Molecular Neurobiology Research Group, Department of Neurosciences, Germans Trias i Pujol Research Institute, Badalona, Catalonia, Spain.,Universitat Autònoma de Barcelona, Bellaterra, Catalonia, Spain
| | - Núria DeGregorio-Rocasolano
- Cellular and Molecular Neurobiology Research Group, Department of Neurosciences, Germans Trias i Pujol Research Institute, Badalona, Catalonia, Spain
| | - Jovita Ponce
- Cellular and Molecular Neurobiology Research Group, Department of Neurosciences, Germans Trias i Pujol Research Institute, Badalona, Catalonia, Spain
| | - Antoni Dávalos
- Department of Neurosciences, Hospital Germans Trias i Pujol, Badalona, Catalonia, Spain
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14
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Lee HI, Park JH, Park MY, Kim NG, Park KJ, Choi BT, Shin YI, Shin HK. Pre-conditioning with transcranial low-level light therapy reduces neuroinflammation and protects blood-brain barrier after focal cerebral ischemia in mice. Restor Neurol Neurosci 2016; 34:201-14. [PMID: 26889965 DOI: 10.3233/rnn-150559] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
PURPOSE Transcranial low-level light therapy (LLLT) has gained interest as a non-invasive, inexpensive and safe method of modulating neurological and psychological functions in recent years. This study was designed to examine the preventive effects of LLLT via visible light source against cerebral ischemia at the behavioral, structural and neurochemical levels. METHODS The mice received LLLT twice a day for 2 days prior to photothrombotic cortical ischemia. RESULTS LLLT significantly reduced infarct size and edema and improved neurological and motor function 24 h after ischemic injury. In addition, LLLT markedly inhibited Iba-1- and GFAP-positive cells, which was accompanied by a reduction in the expression of inflammatory mediators and inhibition of MAPK activation and NF-κB translocation in the ischemic cortex. Concomitantly, LLLT significantly attenuated leukocyte accumulation and infiltration into the infarct perifocal region. LLLT also prevented BBB disruption after ischemic events, as indicated by a reduction of Evans blue leakage and water content. These findings were corroborated by immunofluorescence staining of the tight junction-related proteins in the ischemic cortex in response to LLLT. CONCLUSIONS Non-invasive intervention of LLLT in ischemic brain injury may provide a significant functional benefit with an underlying mechanism possibly being suppression of neuroinflammation and reduction of BBB disruption.
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Affiliation(s)
- Hae In Lee
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea
| | - Jung Hwa Park
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea
| | - Min Young Park
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea
| | - Nam Gyun Kim
- Medical Research Center of Color Seven, Seoul, Republic of Korea
| | - Kyoung-Jun Park
- Medical Research Center of Color Seven, Seoul, Republic of Korea
| | - Byung Tae Choi
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea.,Division of Meridian and Structural Medicine, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea.,Korean Medical Science Research Center for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam, Republic of Korea
| | - Yong-Ii Shin
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea.,Research Institute for Convergence of Biomedical Science and Technology, Pusan National UniversityYangsan Hospital, Yangsan, Gyeongnam, Republic of Korea.,Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea
| | - Hwa Kyoung Shin
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea.,Division of Meridian and Structural Medicine, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea.,Korean Medical Science Research Center for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam, Republic of Korea.,Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongnam, Republic of Korea
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15
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Murugan NJ, Karbowski LM, Persinger MA. Synergistic interactions between temporal coupling of complex light and magnetic pulses upon melanoma cell proliferation and planarian regeneration. Electromagn Biol Med 2016; 36:141-148. [PMID: 27463225 DOI: 10.1080/15368378.2016.1202838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Synergisms between a physiologically patterned magnetic field that is known to enhance planarian growth and suppress proliferation of malignant cells in culture and three light emitting diode (LED) generated visible wavelengths (blue, green, red) upon planarian regeneration and melanoma cell numbers were discerned. Five days of hourly exposures to either a physiologically patterned (2.5-5.0 μT) magnetic field, one of three wavelengths (3 kLux) or both treatments simultaneously indicated that red light (680 nm), blue light (470 nm) or the magnetic field significantly facilitated regeneration of planarian compared to sham field exposed planarian. Presentation of both light and magnetic field conditions enhanced the effect. Whereas the blue and red light diminished the growth of malignant (melanoma) cells, the effect was not as large as that produced by the magnetic field. Only the paired presentation of the blue light and magnetic field enhanced the suppression. On the other hand, the changes following green light (540 nm) exposure did not differ from the control condition and green light presented with the magnetic field eliminated its effects for both the planarian and melanoma cells. These results indicate specific colors affect positive adaptation that is similar to weak, physiologically patterned frequency modulated (8-24 Hz) magnetic fields and that the two forms of energy can synergistically summate or cancel.
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Affiliation(s)
- Nirosha J Murugan
- a Biomolecular Sciences Program, Department of Behavioural Neuroscience , Laurentian University , Sudbury , Canada
| | - Lukasz M Karbowski
- a Biomolecular Sciences Program, Department of Behavioural Neuroscience , Laurentian University , Sudbury , Canada
| | - Michael A Persinger
- a Biomolecular Sciences Program, Department of Behavioural Neuroscience , Laurentian University , Sudbury , Canada
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16
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Minocycline Promotes Neurite Outgrowth of PC12 Cells Exposed to Oxygen-Glucose Deprivation and Reoxygenation Through Regulation of MLCP/MLC Signaling Pathways. Cell Mol Neurobiol 2016; 37:417-426. [PMID: 27098315 DOI: 10.1007/s10571-016-0374-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/17/2015] [Indexed: 10/21/2022]
Abstract
Minocycline, a semi-synthetic second-generation derivative of tetracycline, has been reported to exert neuroprotective effects both in animal models and in clinic trials of neurological diseases. In the present study, we first investigated the protective effects of minocycline on oxygen-glucose deprivation and reoxygenation-induced impairment of neurite outgrowth and its potential mechanism in the neuronal cell line, PC12 cells. We found that minocycline significantly increased cell viability, promoted neurite outgrowth and enhanced the expression of growth-associated protein-43 (GAP-43) in PC12 cells exposed to oxygen-glucose deprivation/reoxygenation injury. In addition, immunoblots revealed that minocycline reversed the overexpression of phosphorylated myosin light chain (MLC) and the suppression of activated extracellular signal-regulated kinase 1/2 (ERK1/2) caused by oxygen-glucose deprivation/reoxygenation injury. Moreover, the minocycline-induced neurite outgrowth was significantly blocked by Calyculin A (1 nM), an inhibitor of myosin light chain phosphatase (MLCP), but not by an ERK1/2 inhibitor (U0126; 10 μM). These findings suggested that minocycline activated the MLCP/MLC signaling pathway in PC12 cells after oxygen-glucose deprivation/reoxygenation injury, which resulted in the promotion of neurite outgrowth.
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17
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Wang J, Chen Y, Yang Y, Xiao X, Chen S, Zhang C, Jacobs B, Zhao B, Bihl J, Chen Y. Endothelial progenitor cells and neural progenitor cells synergistically protect cerebral endothelial cells from Hypoxia/reoxygenation-induced injury via activating the PI3K/Akt pathway. Mol Brain 2016; 9:12. [PMID: 26842559 PMCID: PMC4738765 DOI: 10.1186/s13041-016-0193-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 01/28/2016] [Indexed: 01/24/2023] Open
Abstract
Background Protection of cerebral endothelial cells (ECs) from hypoxia/reoxygenation (H/R)-induced injury is an important strategy for treating ischemic stroke. In this study, we investigated whether co-culture with endothelial progenitor cells (EPCs) and neural progenitor cells (NPCs) synergistically protects cerebral ECs against H/R injury and the underlying mechanism. Results EPCs and NPCs were respectively generated from inducible pluripotent stem cells. Human brain ECs were used to produce an in vitro H/R-injury model. Data showed: 1) Co-culture with EPCs and NPCs synergistically inhibited H/R-induced reactive oxygen species (ROS) over-production, apoptosis, and improved the angiogenic and barrier functions (tube formation and permeability) in H/R-injured ECs. 2) Co-culture with NPCs up-regulated the expression of vascular endothelial growth factor receptor 2 (VEGFR2). 3) Co-culture with EPCs and NPCs complementarily increased vascular endothelial growth factor (VEGF) and brain-derived neurotrophic factor (BDNF) levels in conditioned medium, and synergistically up-regulated the expression of p-Akt/Akt and p-Flk1/VEGFR2 in H/R-injured ECs. 4) Those effects could be decreased or abolished by inhibition of both VEGFR2 and tyrosine kinase B (TrkB) or phosphatidylinositol-3-kinase (PI3K). Conclusions Our data demonstrate that EPCs and NPCs synergistically protect cerebral ECs from H/R-injury, via activating the PI3K/Akt pathway which mainly depends on VEGF and BDNF paracrine.
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Affiliation(s)
- Jinju Wang
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH, 45435, USA.
| | - Yusen Chen
- Department of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, Guangdong, China.
| | - Yi Yang
- Wuhan Institute of Physical Education, College of Health Science, Wuhan, 430079, Hubei, China.
| | - Xiang Xiao
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH, 45435, USA.
| | - Shuzhen Chen
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH, 45435, USA.
| | - Cheng Zhang
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH, 45435, USA.
| | - Bradley Jacobs
- Department of Neurology, Wright State University, 3640 Colonel Glenn Hwy, Dayton, 45435, Ohio, USA.
| | - Bin Zhao
- Department of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, Guangdong, China.
| | - Ji Bihl
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH, 45435, USA.
| | - Yanfang Chen
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Hwy, Dayton, OH, 45435, USA. .,Department of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, Guangdong, China. .,Department of Neurology, Wright State University, 3640 Colonel Glenn Hwy, Dayton, 45435, Ohio, USA. .,Department of Internal Medicine, Wright State University, 3640 Colonel Glenn Hwy, Dayton, 45435, Ohio, USA.
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18
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Li L, Zhao D, Jin Z, Zhang J, Paul C, Wang Y. Phosphodiesterase 5a Inhibition with Adenoviral Short Hairpin RNA Benefits Infarcted Heart Partially through Activation of Akt Signaling Pathway and Reduction of Inflammatory Cytokines. PLoS One 2015; 10:e0145766. [PMID: 26709517 PMCID: PMC4692549 DOI: 10.1371/journal.pone.0145766] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 12/08/2015] [Indexed: 01/28/2023] Open
Abstract
Introduction Treatment with short hairpin RNA (shRNA) interference therapy targeting phosphodiesterase 5a after myocardial infarction (MI) has been shown to mitigate post-MI heart failure. We investigated the mechanisms that underpin the beneficial effects of PDE5a inhibition through shRNA on post-MI heart failure. Methods An adenoviral vector with an shRNA sequence inserted was adopted for the inhibition of phosphodiesterase 5a (Ad-shPDE5a) in vivo and in vitro. Myocardial infarction (MI) was induced in male C57BL/6J mice by left coronary artery ligation, and immediately after that, the Ad-shPDE5a was injected intramyocardially around the MI region and border areas. Results Four weeks post-MI, the Ad-shPDE5a-treated mice showed significant mitigation of the left ventricular (LV) dilatation and dysfunction compared to control mice. Infarction size and fibrosis were also significantly reduced in Ad-shPDE5a-treated mice. Additionally, Ad-shPDE5a treatment decreased the MI-induced inflammatory cytokines interleukin (IL)-1β, IL-6, tumor necrosis factor-α, and transforming growth factor-β1, which was confirmed in vitro in Ad-shPDE5a transfected myofibroblasts cultured under oxygen glucose deprivation. Finally, Ad-shPDE5a treatment was found to activate the myocardial Akt signaling pathway in both in vivo and in vitro experiments. Conclusion These findings indicate that PDE5a inhibition by Ad-shPDE5a via the Akt signal pathway could be of significant value in the design of future therapeutics for post-MI heart failure.
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Affiliation(s)
- Longhu Li
- Department of Cardiology, the First Hospital of Qiqihaer City, Qiqihaer, China
- Department of Cardiology, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Dong Zhao
- Collaborative Innovation Center of Judicial Civilization, China, Key Laboratory of Evidence Science (China University of Political Science and Law), Ministry of Education, Beijing, China
| | - Zhe Jin
- Department of Cardiology, the First Hospital of Qiqihaer City, Qiqihaer, China
| | - Jian Zhang
- Department of EICU, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Christian Paul
- Department of Pathology and Lab Medicine, University of Cincinnati Medical Center, 231 Albert Sabin Way, Cincinnati, Ohio, 45267, United States of America
| | - Yigang Wang
- Department of Pathology and Lab Medicine, University of Cincinnati Medical Center, 231 Albert Sabin Way, Cincinnati, Ohio, 45267, United States of America
- * E-mail:
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19
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Peplow PV. Neuroimmunomodulatory effects of transcranial laser therapy combined with intravenous tPA administration for acute cerebral ischemic injury. Neural Regen Res 2015; 10:1186-90. [PMID: 26487831 PMCID: PMC4590216 DOI: 10.4103/1673-5374.162687] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
At present, the only FDA approved treatment for ischemic strokes is intravenous administration of tissue plasminogen activator within 4.5 hours of stroke onset. Owing to this brief window only a small percentage of patients receive tissue plasminogen activator. Transcranial laser therapy has been shown to be effective in animal models of acute ischemic stroke, resulting in significant improvement in neurological score and function. NEST-1 and NEST-2 clinical trials in human patients have demonstrated the safety and positive trends in efficacy of transcranial laser therapy for the treatment of ischemic stroke when initiated close to the time of stroke onset. Combining intravenous tissue plasminogen activator treatment with transcranial laser therapy may provide better functional outcomes. Statins given within 4 weeks of stroke onset improve stroke outcomes at 90 days compared to patients not given statins, and giving statins following transcranial laser therapy may provide an effective treatment for patients not able to be given tissue plasminogen activator due to time constraints.
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Affiliation(s)
- Philip V Peplow
- Department of Anatomy, University of Otago, Dunedin, New Zealand
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20
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Burland M, Paris L, Quintana P, Bec JM, Diouloufet L, Sar C, Boukhaddaoui H, Charlot B, Braga Silva J, Chammas M, Sieso V, Valmier J, Bardin F. Neurite growth acceleration of adult Dorsal Root Ganglion neurons illuminated by low-level Light Emitting Diode light at 645 nm. JOURNAL OF BIOPHOTONICS 2015; 8:480-8. [PMID: 25077453 DOI: 10.1002/jbio.201400052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 06/10/2014] [Accepted: 07/02/2014] [Indexed: 05/14/2023]
Abstract
The effect of a 645 nm Light Emitting Diode (LED) light irradiation on the neurite growth velocity of adult Dorsal Root Ganglion (DRG) neurons with peripheral axon injury 4-10 days before plating and without previous injury was investigated. The real amount of light reaching the neurons was calculated by taking into account the optical characteristics of the light source and of media in the light path. The knowledge of these parameters is essential to be able to compare results of the literature and a way to reduce inconsistencies. We found that 4 min irradiation of a mean irradiance of 11.3 mW/cm(2) (corresponding to an actual irradiance reaching the neurons of 83 mW/cm(2)) induced a 1.6-fold neurite growth acceleration on non-injured neurons and on axotomized neurons. Although the axotomized neurons were naturally already in a rapid regeneration process, an enhancement was found to occur while irradiating with the LED light, which may be promising for therapy applications. Dorsal Root Ganglion neurons (A) without previous injury and (B) subjected to a conditioning injury.
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Affiliation(s)
- Marion Burland
- Inserm U1051., INM, Hôpital St Eloi, 80 rue Augustin Fliche, 34091, Montpellier Cedex 5, France
- Biolux Medical, 7 Place de la Comédie, 34000, Montpellier, France
| | - Lambert Paris
- Inserm U1051., INM, Hôpital St Eloi, 80 rue Augustin Fliche, 34091, Montpellier Cedex 5, France
- CNRS, IES, UMR 5214, 34000, Montpellier, France
- Université de Nîmes, Place Gabriel Péri, 30000, Nîmes, France
| | - Patrice Quintana
- Inserm U1051., INM, Hôpital St Eloi, 80 rue Augustin Fliche, 34091, Montpellier Cedex 5, France
| | - Jean-Michel Bec
- Biolux Medical, 7 Place de la Comédie, 34000, Montpellier, France
| | - Lucie Diouloufet
- Inserm U1051., INM, Hôpital St Eloi, 80 rue Augustin Fliche, 34091, Montpellier Cedex 5, France
| | - Chamroeun Sar
- Inserm U1051., INM, Hôpital St Eloi, 80 rue Augustin Fliche, 34091, Montpellier Cedex 5, France
| | - Hassan Boukhaddaoui
- Inserm U1051., INM, Hôpital St Eloi, 80 rue Augustin Fliche, 34091, Montpellier Cedex 5, France
| | | | | | - Michel Chammas
- Inserm U1051., INM, Hôpital St Eloi, 80 rue Augustin Fliche, 34091, Montpellier Cedex 5, France
| | - Victor Sieso
- Inserm U1051., INM, Hôpital St Eloi, 80 rue Augustin Fliche, 34091, Montpellier Cedex 5, France
| | - Jean Valmier
- Inserm U1051., INM, Hôpital St Eloi, 80 rue Augustin Fliche, 34091, Montpellier Cedex 5, France
- Univ. Montpellier, INM, Inserm U1051, 34000, Montpellier, France
| | - Fabrice Bardin
- CNRS, IES, UMR 5214, 34000, Montpellier, France
- Université de Nîmes, Place Gabriel Péri, 30000, Nîmes, France
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21
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Hu SQ, Cui W, Mak SH, Choi CL, Hu YJ, Li G, Tsim KWK, Pang YP, Han YF. Robust Neuritogenesis-Promoting Activity by Bis(heptyl)-Cognitin Through the Activation of alpha7-Nicotinic Acetylcholine Receptor/ERK Pathway. CNS Neurosci Ther 2015; 21:520-9. [PMID: 25917415 DOI: 10.1111/cns.12401] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 04/02/2015] [Accepted: 04/03/2015] [Indexed: 12/14/2022] Open
Abstract
AIMS Neurodegenerative disorders are caused by progressive neuronal loss in the brain, and hence, compounds that could promote neuritogenesis may have therapeutic values. In this study, the effects of bis(heptyl)-cognitin (B7C), a multifunctional dimer, on neurite outgrowth were investigated in both PC12 cells and primary cortical neurons. METHODS Immunocytochemical staining was used to evaluate the proneuritogenesis effects, and Western blot and short hairpin RNA assays were applied to explore the underlying mechanisms. RESULTS B7C (0.1-0.5 μM) induced robust neurite outgrowth in PC12 cells, as evidenced by the neurite-bearing morphology and upregulation of growth-associated protein-43 expression. In addition, B7C markedly promoted neurite outgrowth in primary cortical neurons as shown by the increase in the length of β-III-tubulin-positive neurites. Furthermore, B7C rapidly increased ERK phosphorylation. Specific inhibitors of alpha7-nicotinic acetylcholine receptor (α7-nAChR) and MEK, but not those of p38 or JNK, blocked the neurite outgrowth as well as ERK phosphorylation induced by B7C. Most importantly, genetic depletion of α7-nAChR significantly abolished B7C-induced neurite outgrowth in PC12 cells. CONCLUSION B7C promoted neurite outgrowth through the activation of α7-nAChR/ERK pathway, which offers novel insight into the potential application of B7C in the treatment of neurodegenerative disorders.
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Affiliation(s)
- Sheng-Quan Hu
- Department of Applied Biology and Chemical Technology, Institute of Modern Chinese Medicine, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.,Institute of New Drug Research, Guangdong Province Key Laboratory of Pharmacodynamic, Constituents of Traditional Chinese Medicine & New Drug Research, College of Pharmacy, Jinan University, Guangdong, China.,The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Wei Cui
- Department of Applied Biology and Chemical Technology, Institute of Modern Chinese Medicine, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.,The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Shing-Hung Mak
- Department of Applied Biology and Chemical Technology, Institute of Modern Chinese Medicine, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.,The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Chung-Lit Choi
- Department of Applied Biology and Chemical Technology, Institute of Modern Chinese Medicine, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Yuan-Jia Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Gang Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China
| | - Karl Wah-Keung Tsim
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Yuan-Ping Pang
- Mayo Cancer Center, Department of Pharmacology, Mayo Clinic, Rochester, MN, USA
| | - Yi-Fan Han
- Department of Applied Biology and Chemical Technology, Institute of Modern Chinese Medicine, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.,The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
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Alon N, Duadi H, Cohen O, Samet T, Zilony N, Schori H, Shefi O, Zalevsky Z. Promotion of neural sprouting using low-level green light-emitting diode phototherapy. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:20502. [PMID: 25652701 DOI: 10.1117/1.jbo.20.2.020502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 12/23/2014] [Indexed: 06/04/2023]
Abstract
We irradiated neuroblastoma SH-SY5Y cell line with low-level light-emitting diode (LED) illumination at a visible wavelength of 520 nm (green) and intensity of 100 mW∕cm2. We captured and analyzed the cell morphology before LED treatment, immediately after, and 12 and 24 h after treatment. Our study demonstrated that LED illumination increases the amount of sprouting dendrites in comparison to the control untreated cells. This treatment also resulted in more elongated cells after treatment in comparison to the control cells and higher levels of expression of a differentiation related gene. This result is a good indication that the proposed method could serve in phototherapy treatment for increasing sprouting and enhancing neural network formation.
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23
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Rouleau N, Dotta BT. Electromagnetic fields as structure-function zeitgebers in biological systems: environmental orchestrations of morphogenesis and consciousness. Front Integr Neurosci 2014; 8:84. [PMID: 25426035 PMCID: PMC4224074 DOI: 10.3389/fnint.2014.00084] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 10/09/2014] [Indexed: 11/13/2022] Open
Abstract
Within a cell system structure dictates function. Any interaction between cells, or a cell and its environment, has the potential to have long term implications on the function of a given cell and emerging cell aggregates. The structure and function of cells are continuously subjected to modification by electrical and chemical stimuli. However, biological systems are also subjected to an ever-present influence: the electromagnetic (EM) environment. Biological systems have the potential to be influenced by subtle energies which are exchanged at atomic and subatomic scales as EM phenomena. These energy exchanges have the potential to manifest at higher orders of discourse and affect the output (behavior) of a biological system. Here we describe theoretical and experimental evidence of EM influence on cells and the integration of whole systems. Even weak interactions between EM energies and biological systems display the potential to affect a developing system. We suggest the growing literature of EM effects on biological systems has significant implications to the cell and its functional aggregates.
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Affiliation(s)
- Nicolas Rouleau
- Behavioural Neuroscience Program, Laurentian UniversitySudbury, ON, Canada
- Department of Psychology, Laurentian UniversitySudbury, ON, Canada
| | - Blake T. Dotta
- Behavioural Neuroscience Program, Laurentian UniversitySudbury, ON, Canada
- Department of Psychology, Laurentian UniversitySudbury, ON, Canada
- Department of Biomolecular Sciences, Laurentian UniversitySudbury, ON, Canada
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Dotta BT, Murugan NJ, Karbowski LM, Lafrenie RM, Persinger MA. Shifting wavelengths of ultraweak photon emissions from dying melanoma cells: their chemical enhancement and blocking are predicted by Cosic's theory of resonant recognition model for macromolecules. THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 2014; 101:87-94. [PMID: 24424785 DOI: 10.1007/s00114-013-1133-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 12/15/2013] [Accepted: 12/17/2013] [Indexed: 11/30/2022]
Abstract
During the first 24 h after removal from incubation, melanoma cells in culture displayed reliable increases in emissions of photons of specific wavelengths during discrete portions of this interval. Applications of specific filters revealed marked and protracted increases in infrared (950 nm) photons about 7 h after removal followed 3 h later by marked and protracted increases in near ultraviolet (370 nm) photon emissions. Specific wavelengths within the visible (400 to 800 nm) peaked 12 to 24 h later. Specific activators or inhibitors for specific wavelengths based upon Cosic's resonant recognition model elicited either enhancement or diminishment of photons at the specific wavelength as predicted. Inhibitors or activators predicted for other wavelengths, even within 10 nm, were less or not effective. There is now evidence for quantitative coupling between the wavelength of photon emissions and intrinsic cellular chemistry. The results are consistent with initial activation of signaling molecules associated with infrared followed about 3 h later by growth and protein-structural factors associated with ultraviolet. The greater-than-expected photon counts compared with raw measures through the various filters, which also function as reflective material to other photons, suggest that photons of different wavelengths might be self-stimulatory and could play a significant role in cell-to-cell communication.
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Affiliation(s)
- Blake T Dotta
- Biomolecular Sciences Program, Laurentian University, 935 Ramsey Lake Road, Sudbury, Ontario, Canada, P3E 2C6
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Tang R, Dai J. Biophoton signal transmission and processing in the brain. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 139:71-5. [PMID: 24461927 DOI: 10.1016/j.jphotobiol.2013.12.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 12/13/2013] [Accepted: 12/13/2013] [Indexed: 11/19/2022]
Abstract
The transmission and processing of neural information in the nervous system plays a key role in neural functions. It is well accepted that neural communication is mediated by bioelectricity and chemical molecules via the processes called bioelectrical and chemical transmission, respectively. Indeed, the traditional theories seem to give valuable explanations for the basic functions of the nervous system, but difficult to construct general accepted concepts or principles to provide reasonable explanations of higher brain functions and mental activities, such as perception, learning and memory, emotion and consciousness. Therefore, many unanswered questions and debates over the neural encoding and mechanisms of neuronal networks remain. Cell to cell communication by biophotons, also called ultra-weak photon emissions, has been demonstrated in several plants, bacteria and certain animal cells. Recently, both experimental evidence and theoretical speculation have suggested that biophotons may play a potential role in neural signal transmission and processing, contributing to the understanding of the high functions of nervous system. In this paper, we review the relevant experimental findings and discuss the possible underlying mechanisms of biophoton signal transmission and processing in the nervous system.
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Affiliation(s)
- Rendong Tang
- Wuhan Institute for Neuroscience and Neuroengineering, South-Central University for Nationalities, Wuhan 430074, China
| | - Jiapei Dai
- Wuhan Institute for Neuroscience and Neuroengineering, South-Central University for Nationalities, Wuhan 430074, China.
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Liu Y, Zhang Y, Lin L, Lin F, Li T, Du H, Chen R, Zheng W, Liu N. Effects of bone marrow-derived mesenchymal stem cells on the axonal outgrowth through activation of PI3K/AKT signaling in primary cortical neurons followed oxygen-glucose deprivation injury. PLoS One 2013; 8:e78514. [PMID: 24265694 PMCID: PMC3827028 DOI: 10.1371/journal.pone.0078514] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 09/14/2013] [Indexed: 01/01/2023] Open
Abstract
Background Transplantation with bone marrow-derived mesenchymal stem cells (BMSCs) improves the survival of neurons and axonal outgrowth after stroke remains undetermined. Here, we investigated whether PI3K/AKT signaling pathway is involved in these therapeutic effects of BMSCs. Methodology/Principal Findings (1) BMSCs and cortical neurons were derived from Sprague-Dawley rats. The injured neurons were induced by Oxygen–Glucose Deprivation (OGD), and then were respectively co-cultured for 48 hours with BMSCs at different densities (5×103, 5×105/ml) in transwell co-culture system. The average length of axon and expression of GAP-43 were examined to assess the effect of BMSCs on axonal outgrowth after the damage of neurons induced by OGD. (2) The injured neurons were cultured with a conditioned medium (CM) of BMSCs cultured for 24 hours in neurobasal medium. During the process, we further identified whether PI3K/AKT signaling pathway is involved through the adjunction of LY294002 (a specific phosphatidylinositide-3-kinase (PI3K) inhibitor). Two hours later, the expression of pAKT (phosphorylated AKT) and AKT were analyzed by Western blotting. The length of axons, the expression of GAP-43 and the survival of neurons were measured at 48 hours. Results Both BMSCs and CM from BMSCs inreased the axonal length and GAP-43 expression in OGD-injured cortical neurons. There was no difference between the effects of BMSCs of 5×105/ml and of 5×103/ml on axonal outgrowth. Expression of pAKT enhanced significantly at 2 hours and the neuron survival increased at 48 hours after the injured neurons cultured with the CM, respectively. These effects of CM were prevented by inhibitor LY294002. Conclusions/Significance BMSCs promote axonal outgrowth and the survival of neurons against the damage from OGD in vitro by the paracrine effects through PI3K/AKT signaling pathway.
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Affiliation(s)
- Yong Liu
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
- Institute of Cerebral Vascular Disease of Fujian Province, Fuzhou, Fujian, People Republic of China
| | - Yixian Zhang
- Institute of Cerebral Vascular Disease of Fujian Province, Fuzhou, Fujian, People Republic of China
- Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
| | - Longzai Lin
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
- Institute of Cerebral Vascular Disease of Fujian Province, Fuzhou, Fujian, People Republic of China
| | - Feifei Lin
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
- Institute of Cerebral Vascular Disease of Fujian Province, Fuzhou, Fujian, People Republic of China
| | - Tin Li
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
- Institute of Cerebral Vascular Disease of Fujian Province, Fuzhou, Fujian, People Republic of China
| | - Houwei Du
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
- Institute of Cerebral Vascular Disease of Fujian Province, Fuzhou, Fujian, People Republic of China
| | - Ronghua Chen
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
- Institute of Cerebral Vascular Disease of Fujian Province, Fuzhou, Fujian, People Republic of China
| | - Wei Zheng
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
- Institute of Cerebral Vascular Disease of Fujian Province, Fuzhou, Fujian, People Republic of China
| | - Nan Liu
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
- Institute of Cerebral Vascular Disease of Fujian Province, Fuzhou, Fujian, People Republic of China
- Department of Rehabilitation, Fujian Medical University Union Hospital, Fuzhou, Fujian, People Republic of China
- * E-mail:
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