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Yoo YM, Kim KH. Current understanding of nociplastic pain. Korean J Pain 2024; 37:107-118. [PMID: 38504389 PMCID: PMC10985487 DOI: 10.3344/kjp.23326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/28/2023] [Accepted: 01/09/2024] [Indexed: 03/21/2024] Open
Abstract
Nociplastic pain by the "International Association for the Study of Pain" is defined as pain that arises from altered nociception despite no clear evidence of nociceptive or neuropathic pain. Augmented central nervous system pain and sensory processing with altered pain modulation are suggested to be the mechanism of nociplastic pain. Clinical criteria for possible nociplastic pain affecting somatic structures include chronic regional pain and evoked pain hypersensitivity including allodynia with after-sensation. In addition to possible nociplastic pain, clinical criteria for probable nociplastic pain are pain hypersensitivity in the region of pain to non-noxious stimuli and presence of comorbidity such as generalized symptoms with sleep disturbance, fatigue, or cognitive problems with hypersensitivity of special senses. Criteria for definitive nociplastic pain is not determined yet. Eight specific disorders related to central sensitization are suggested to be restless leg syndrome, chronic fatigue syndrome, fibromyalgia, temporomandibular disorder, migraine or tension headache, irritable bowel syndrome, multiple chemical sensitivities, and whiplash injury; non-specific emotional disorders related to central sensitization include anxiety or panic attack and depression. These central sensitization pain syndromes are overlapped to previous functional pain syndromes which are unlike organic pain syndromes and have emotional components. Therefore, nociplastic pain can be understood as chronic altered nociception related to central sensitization including both sensory components with nociceptive and/or neuropathic pain and emotional components. Nociplastic pain may be developed to explain unexplained chronic pain beyond tissue damage or pathology regardless of its origin from nociceptive, neuropathic, emotional, or mixed pain components.
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Affiliation(s)
- Yeong-Min Yoo
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Korea
| | - Kyung-Hoon Kim
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Korea
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Tang S, Hu W, Zou H, Luo Q, Deng W, Cao S. The complement system: a potential target for the comorbidity of chronic pain and depression. Korean J Pain 2024; 37:91-106. [PMID: 38433474 PMCID: PMC10985490 DOI: 10.3344/kjp.23284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/28/2023] [Accepted: 12/16/2023] [Indexed: 03/05/2024] Open
Abstract
The mechanisms of the chronic pain and depression comorbidity have gained significant attention in recent years. The complement system, widely involved in central nervous system diseases and mediating non-specific immune mechanisms in the body, remains incompletely understood in its involvement in the comorbidity mechanisms of chronic pain and depression. This review aims to consolidate the findings from recent studies on the complement system in chronic pain and depression, proposing that it may serve as a promising shared therapeutic target for both conditions. Complement proteins C1q, C3, C5, as well as their cleavage products C3a and C5a, along with the associated receptors C3aR, CR3, and C5aR, are believed to have significant implications in the comorbid mechanism. The primary potential mechanisms encompass the involvement of the complement cascade C1q/C3-CR3 in the activation of microglia and synaptic pruning in the amygdala and hippocampus, the role of complement cascade C3/C3a-C3aR in the interaction between astrocytes and microglia, leading to synaptic pruning, and the C3a-C3aR axis and C5a-C5aR axis to trigger inflammation within the central nervous system. We focus on studies on the role of the complement system in the comorbid mechanisms of chronic pain and depression.
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Affiliation(s)
- Shanshan Tang
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Wen Hu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Helin Zou
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Qingyang Luo
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Wenwen Deng
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Song Cao
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, China
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Xue X, Zhang Y, Yu W, Li Q, Wang Y, Lu R, Wang H, Hua Y. Thin and Plain Supplementary Motor Area in Chronic Ankle Instability: A Volume and Surface-based Morphometric Study. J Athl Train 2023:497277. [PMID: 38014788 DOI: 10.4085/1062-6050-0257.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
CONTEXT The supplementary motor area (SMA) is involved in the functional deficits of chronic ankle instability (CAI), but the structural basis of its abnormalities remains unclear. OBJECTIVE To determine the differences in volume and surface-based morphological features of SMA between patients with CAI and healthy controls, and their relationship with the clinical features of CAI. DESIGN Cross-sectional study. SETTING Sports medicine laboratory. PATIENTS OR OTHER PARTICIPANTS A total of 32 CAI patients (10 females; age: 32.46 ± 7.51 years) and 31 healthy controls (12 females; age: 29.70 ± 8.07 years) participated in this study. MAIN OUTCOME MEASURE(S) Participants perform T1 structural magnetic resonance imaging and calculate volume and surface-based morphological features of SMA subregions. These included anterior and posterior subdivisions of Brodmann's area 6 m (6 ma/6 mp), and supplementary and cingulate eye fields. Between-group comparisons and correlation analysis with clinical features of CAI were performed. RESULTS Moderately thinner 6 mp (Cohen's d = -0.61) and moderately plainer 6 ma (Cohen's d = -0.70) were observed in patients compared with controls. Before and after regressing out the covariates, the thinner 6 mp was correlated with the lower foot and ankle ability measure scores of daily activities (r-before=0.400, r-after = 0.449). CONCLUSIONS Patients with CAI had a thinner posterior subdivision (motor-output site) and a plainer anterior subdivision (motor-planning site) of SMA than that of controls. The thin motor-output site of the SMA is associated with ankle dysfunction in patients. These morphologic evidence of maladaptive neuroplasticity in SMA might promote more targeted rehabilitation of CAI.
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Affiliation(s)
- Xiao'ao Xue
- ; Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Yuwen Zhang
- ; Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
| | - Wenwen Yu
- ; Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
| | - Qianru Li
- ; Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Yiran Wang
- ; Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Rong Lu
- ; Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China
| | - He Wang
- ; Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China; Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China; Human Phenome Institute, Fudan University, Shanghai, China
| | - Yinghui Hua
- ; Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
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Caires CRS, Bossolani-Martins AL. Which form of environmental enrichment is most effective in rodent models of autism? Behav Processes 2023; 211:104915. [PMID: 37451559 DOI: 10.1016/j.beproc.2023.104915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
Environmental enrichment (EE) is known to produce experience-dependent changes in the brains and behaviors of rodents, and it has therefore been widely used to study neurodevelopmental disorders, including autism. Current studies show significant protocol variation, such as the presence of running wheels, number of cagemates, duration of enrichment, and the age of the animals at the beginning and end of the enrichment interventions. EE has been shown to have prominent positive effects in animal models of idiopathic and syndromic autism, but little is known about the ideal type of EE and the most efficient protocols for reversing autism spectrum disorder (ASD) behaviors modeled in rodents. This review presents evidence that social enrichment is the most effective way to rescue typical behaviors, and that variables such as onset, duration, and type of induction in the ASD model are important for EE success. Understanding which EE protocols are most beneficial for reversing ASD behaviors modeled in rodents opens up possibilities for the potential treatment of neuropsychiatric disorders characterized by behavioral deficits, such as autism.
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Affiliation(s)
- Cássia Regina Suzuki Caires
- Laboratory of Experimental Physiology, Faculty of Medicine of São Jose do Rio Preto - FAMERP, Av. Brg. Faria Lima, 5416 - Vila São Pedro, São José do Rio Preto, SP, Brazil.
| | - Ana Luiza Bossolani-Martins
- Federal University of Mato Grosso do Sul - UFMS, Av. Pedro Pedrossian, 725 - Universitário, Paranaíba, MS, Brazil.
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Taylor DN. The Neurophysiological Lesion: A Scoping Review. J Chiropr Med 2023; 22:123-130. [PMID: 37346242 PMCID: PMC10280090 DOI: 10.1016/j.jcm.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 09/27/2022] [Accepted: 09/27/2022] [Indexed: 04/03/2023] Open
Abstract
Objective The purpose of this study was to examine the extent of the literature on the neurophysiological lesion as referenced in functional neurology. Methods A literature search was performed within the period from 2010 to March 2021. Search terms included central sensitization, central sensitivity syndrome, nociplastic pain, cold hyperalgesia, heat hyperalgesia, mechanical hyperalgesia, dynamic mechanical allodynia, temporal summation, spatial summation, and descending inhibition. A qualitative synthesis summarized the research findings, including clinical conditions and effect of spinal manipulation. Results There were 30 studies, which included 7 high-level studies (meta-analysis or systematic reviews), 22 randomized controlled studies, and 1 scoping review. The findings suggest the existence of the changes in the central integrated state of a population of neurons with various disorders, experimentally induced stimulation, and treatment. The current literature suggests plasticity of the central integrative state (CIS) with the onset of pathologies and the changes in the CIS with different conservative nonpharmacologic treatments. Conclusions This review suggests changes in the resting state of the CIS of a population of neurons that exist in the physiologic lesion may change in response to various therapies, including manipulative therapy. The findings from this review provide support of the hypothesis that nonpharmacologic conservative care may affect the neurophysiological lesion. However, studies were heterogeneous and evidence was lacking in the translation of targeting the therapies to distinct neuronal areas for clinical outcomes to treat specific disease states.
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Affiliation(s)
- David N. Taylor
- Department of Clinical Sciences, Texas Chiropractic College, Pasadena, Texas
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Im S, Oh J, Jun SY, Chang SY, Kim Y. Evidence of Lateralized White Matter Plasticity: A Longitudinal Study of Balance Performance in Nonexpert Healthy Adults. Eur J Neurosci 2023. [PMID: 37125416 DOI: 10.1111/ejn.16005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 04/03/2023] [Accepted: 04/19/2023] [Indexed: 05/02/2023]
Abstract
Training-induced plasticity by practicing expert skills has been of particular interest; however, little is known about white matter plasticity for improving a fundamental element of body function, such as balance or postural control. This study explored white matter plasticity in nonexpert healthy adults, based on stepwise balance training. Seventeen participants were included and performed a home-based balance training program for 4 weeks (30 minutes/day, 3 days/week). Before commencing training, they underwent a baseline diffusion tensor imaging scan. A second scan was acquired at the end of the 4-week training. Lateralized balance load was applied on the right leg to contrast any lateralized effect on the white matter tracts. The balance function was assessed using the Community Mobility & Balance Scale. We examined changes in the fractional anisotropy values of the tracts of interest between pre- and post-training. After the 4-week training, the fractional anisotropy values were enhanced in the right superior cerebellar peduncle, transverse pontine fiber, body of the corpus callosum, left fornix, and left uncinate fasciculus. The Community Mobility & Balance Scale score improved after 4-week training, but an association with changes in fractional anisotropy values cannot be evaluated due to the ceiling effect of the balance assessment tools. Balance training can strengthen the cerebro-cerebellar and interhemispheric structural connections and induce microstructural changes in the limbic structures, including the fornix and uncinate fasciculus. The effect of a lateralized balance load could be projected to the specific white matter tracts in a lateralized manner.
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Affiliation(s)
- Sun Im
- Department of Rehabilitation Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Jeehae Oh
- Rehabilitation Medicine, Independent Scholar, Seoul, Republic of Korea
| | - So Yeon Jun
- Department of Rehabilitation Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - So-Youn Chang
- Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Youngkook Kim
- Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Xi KW, Chen DD, Geng X, Bian Y, Wang MX, Bian H. Calcium/calmodulin-dependent protein kinase II is involved in the transmission and regulation of nociception in naïve and morphine-tolerant rat nucleus accumbens. Korean J Pain 2023; 36:163-172. [PMID: 36941088 PMCID: PMC10043793 DOI: 10.3344/kjp.22372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 02/16/2023] [Accepted: 02/19/2023] [Indexed: 03/23/2023] Open
Abstract
Background Synaptic plasticity contributes to nociceptive signal transmission and modulation, with calcium/calmodulin-dependent protein kinase II (CaMK II) playing a fundamental role in neural plasticity. This research was conducted to investigate the role of CaMK II in the transmission and regulation of nociceptive information within the nucleus accumbens (NAc) of naïve and morphine-tolerant rats. Methods Randall Selitto and hot-plate tests were utilized to measure the hindpaw withdrawal latencies (HWLs) in response to noxious mechanical and thermal stimuli. To induce chronic morphine tolerance, rats received intraperitoneal morphine injection twice per day for seven days. CaMK II expression and activity were assessed using western blotting. Results Intra-NAc microinjection of autocamtide-2-related inhibitory peptide (AIP) induced an increase in HWLs in naïve rats in response to noxious thermal and mechanical stimuli. Moreover, the expression of the phosphorylated CaMK II (p-CaMK II) was significantly decreased as determined by western blotting. Chronic intraperitoneal injection of morphine resulted in significant morphine tolerance in rats on Day 7, and an increase of p-CaMK II expression in NAc in morphine-tolerant rats was observed. Furthermore, intra-NAc administration of AIP elicited significant antinociceptive responses in morphine-tolerant rats. In addition, compared with naïve rats, AIP induced stronger thermal antinociceptive effects of the same dose in rats exhibiting morphine tolerance. Conclusions This study shows that CaMK II in the NAc is involved in the transmission and regulation of nociception in naïve and morphine-tolerant rats.
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Affiliation(s)
- Kai Wen Xi
- Department of Physiology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
- Second Department of Neurosurgery, The First Affiliated Hospital, Kunming Medical University, Kunming, Yunnan, China
- Department of Cerebrovascular Surgery, Xinyu People's Hospital, Xinyu, Jiangxi, China
| | - De Duo Chen
- Department of Physiology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
| | - Xin Geng
- Second Department of Neurosurgery, The First Affiliated Hospital, Kunming Medical University, Kunming, Yunnan, China
| | - Yan Bian
- Department of Oncology, The Second Affiliated Hospital, Kunming Medical University, Kunming, Yunnan, China
| | - Min Xin Wang
- Department of Physiology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
| | - Hui Bian
- Department of Physiology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, Yunnan, China
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Fallahi MS, Azadnajafabad S, Maroufi SF, Pour-Rashidi A, Khorasanizadeh M, Sattari SA, Faramarzi S, Slavin KV. Application of Vagus Nerve Stimulation in Spinal Cord Injury Rehabilitation. World Neurosurg 2023; 174:11-24. [PMID: 36858292 DOI: 10.1016/j.wneu.2023.02.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/19/2023] [Accepted: 02/20/2023] [Indexed: 03/02/2023]
Abstract
Spinal cord injury (SCI) is a prevalent devastating condition causing significant morbidity and mortality, especially in developing countries. The pathophysiology of SCI involves ischemia, neuroinflammation, cell death, and scar formation. Due to the lack of definitive therapy for SCI, interventions mainly focus on rehabilitation to reduce deterioration and improve the patient's quality of life. Currently, rehabilitative exercises and neuromodulation methods such as functional electrical stimulation, epidural electrical stimulation, and transcutaneous electrical nerve stimulation are being tested in patients with SCI. Other spinal stimulation techniques are being developed and tested in animal models. However, often these methods require complex surgical procedures and solely focus on motor function. Vagus nerve stimulation (VNS) is currently used in patients with epilepsy, depression, and migraine and is being investigated for its application in other disorders. In animal models of SCI, VNS significantly improved locomotor function by ameliorating inflammation and improving plasticity, suggesting its use in human subjects. SCI patients also suffer from non-motor complications, including pain, gastrointestinal dysfunction, cardiovascular disorders, and chronic conditions such as obesity and diabetes. VNS have shown promising results in alleviating these conditions in non-SCI patients, which makes it a possible therapeutic option in SCI patients.
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Affiliation(s)
- Mohammad Sadegh Fallahi
- Neurosurgical Research Network (NRN), Universal Scientific Education and Research Network (USERN), Tehran, Iran; School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sina Azadnajafabad
- Neurosurgical Research Network (NRN), Universal Scientific Education and Research Network (USERN), Tehran, Iran; Department of Surgery, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Farzad Maroufi
- Neurosurgical Research Network (NRN), Universal Scientific Education and Research Network (USERN), Tehran, Iran; Department of Neurosurgery, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Ahmad Pour-Rashidi
- Neurosurgical Research Network (NRN), Universal Scientific Education and Research Network (USERN), Tehran, Iran; Department of Neurosurgery, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - MirHojjat Khorasanizadeh
- Department of Neurosurgery, Mount Sinai Hospital, Icahn School of Medicine, New York City, NY, USA
| | - Shahab Aldin Sattari
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Konstantin V Slavin
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, Illinois, USA.
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Hwang W, Choi JK, Bang MS, Park WY, Oh BM. Gene Expression Profile Changes in the Stimulated Rat Brain Cortex After Repetitive Transcranial Magnetic Stimulation. Brain Neurorehabil 2022; 15:e27. [PMID: 36742089 PMCID: PMC9833481 DOI: 10.12786/bn.2022.15.e27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/30/2022] [Accepted: 08/22/2022] [Indexed: 12/02/2022] Open
Abstract
Repetitive transcranial magnetic stimulation (rTMS) is gaining popularity as a research tool in neuroscience; however, little is known about its molecular mechanisms of action. The present study aimed to investigate the rTMS-induced transcriptomic changes; we performed microarray messenger RNA, micro RNA, and integrated analyses to explore these molecular events. Eight adult male Sprague-Dawley rats were subjected to a single session of unilateral rTMS at 1 Hz (n = 4) or sham (n = 4). The left hemisphere was stimulated for 20 minutes. To evaluate the cumulative effect of rTMS, eight additional rats were assigned to the 1-Hz (n = 4) or sham (n = 4) rTMS groups. The left hemisphere was stimulated for 5 consecutive days using the same protocol. Microarray analysis revealed differentially expressed genes in the rat cortex after rTMS treatment. The overrepresented gene ontology categories included the positive regulation of axon extension, axonogenesis, intracellular transport, and synaptic plasticity after repeated sessions of rTMS. A single session of rTMS primarily induced changes in the early genes, and several miRNAs were significantly related to the mRNAs. Future studies are required to validate the functional significance of selected genes and refine the therapeutic use of rTMS.
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Affiliation(s)
- Wonjae Hwang
- Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea
| | - Joong Kyung Choi
- Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Moon Suk Bang
- Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea.,National Traffic Injury Rehabilitation Hospital, Yangpyeong, Korea
| | - Woong-Yang Park
- Samsung Genome Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byung-Mo Oh
- Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea.,National Traffic Injury Rehabilitation Hospital, Yangpyeong, Korea.,Institute on Aging, Seoul National University, Seoul, Korea
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Palagini L, Geoffroy PA, Riemann D. Sleep markers in psychiatry: do insomnia and disturbed sleep play as markers of disrupted neuroplasticity in mood disorders? A proposed model. Curr Med Chem 2021; 29:5595-5605. [PMID: 34906053 DOI: 10.2174/0929867328666211214164907] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/31/2021] [Accepted: 09/05/2021] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Since insomnia and disturbed sleep may affect neuroplasticity, we aimed at reviewing their potential role as markers of disrupted neuroplasticity involved in mood disorders. METHOD We performed a systematic review, according to PRIMA, on PubMed, PsycINFO and Embase electronic databases for literature regarding mood disorders, insomnia, sleep loss/deprivation in relation to different pathways involved in the impairment of neuroplasticity in mood disorders such as 1] alterations in neurodevelopment 2] activation of the stress system 3] neuroinflammation 4] neurodegeneration/neuroprogression, 4] deficit in neuroprotection. RESULTS Sixty-five articles were analyzed and a narrative/ theoretical review was conducted. Studies showed that insomnia, sleep loss and sleep deprivation might impair brain plasticity of those areas involved in mood regulation throughout different pathways. Insomnia and disrupted sleep may act as neurobiological stressors that by over-activating the stress and inflammatory systems may affect neural plasticity causing neuronal damage. In addition, disturbed sleep may favor a deficit in neuroprotection hence contributing to impaired neuroplasticity. CONCLUSIONS Insomnia and disturbed sleep may play a role as markers of alteration in brain plasticity in mood disorders. Assessing and targeting insomnia in the clinical practice may potentially play a neuroprotective role, contributing to "repairing" alterations in neuroplasticity or to the functional recovery of those areas involved in mood and emotion regulation.
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Affiliation(s)
- Laura Palagini
- Department of Experimental and Clinic Medicine, Section of Psychiatry, University of Pisa, Via Roma 67, 56100, Pisa. Italy
| | - Pierre Alexis Geoffroy
- Département de psychiatrie et d'addictologie, AP-HP, Hopital Bichat - Claude Bernard, F-75018 Paris, France; Université de Paris, NeuroDiderot, Inserm U1141, F-75019 Paris. France
| | - Dieter Riemann
- Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg. Germany
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Lee CH, Kim HS, Kim YS, Jung S, Yoon CH, Kwon OY. Cerebral current-source distribution associated with pain improvement by non-invasive painless signaling therapy in patients with failed back surgery syndrome. Korean J Pain 2021; 34:437-446. [PMID: 34593661 PMCID: PMC8494963 DOI: 10.3344/kjp.2021.34.4.437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/11/2021] [Accepted: 06/16/2021] [Indexed: 12/04/2022] Open
Abstract
Background Non-invasive painless signaling therapy (NPST) is an electro-cutaneous treatment that converts endogenous pain information into synthetic non-pain information. This study explored whether pain improvement by NPST in failed back surgery syndrome (FBSS) patients is related to cerebral modulation. Methods Electroencephalography (EEG) analysis was performed in 11 patients with FBSS. Subjects received daily NPST for 5 days. Before the first treatment, patients completed the Brief Pain Inventory (BPI) and Beck Depression Inventory and underwent baseline EEG. After the final treatment, they responded again to the BPI, reported the percent pain improvement (PPI), and then underwent post-treatment EEG. If the PPI grade was zero, they were assigned to the ineffective group, while all others were assigned to the effective group. We used standardized low-resolution brain electromagnetic tomography (sLORETA) to explore the EEG current-source distribution (CSD) associated with pain improvement by NPST. Results The 11 participants had a median age of 67.0 years, and 63.6% were female. The sLORETA images revealed a beta-2 CSD increment in 12 voxels of the right anterior cingulate gyrus (ACG) and the right medial frontal area. The point of maximal CSD changes was in the right ACG. The alpha band CSD increased in 2 voxels of the left transverse gyrus. Conclusions Pain improvement by NPST in FBSS patients was associated with increased cerebral activity, mainly in the right ACG. The change in afferent information induced by NPST seems to be associated with cerebral pain perception.
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Affiliation(s)
- Chang Han Lee
- Department of Rehabilitation Medicine, Gyeongsang National University Hospital, Jinju, Korea.,Department of Rehabilitation Medicine, Gyeongsang National University College of Medicine, Jinju, Korea.,Institute of Health Science, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Hyeong Seop Kim
- Department of Rehabilitation Medicine, Gyeongsang National University Hospital, Jinju, Korea
| | - Young-Soo Kim
- Department of Neurology, Gyeongsang National University Hospital, Jinju, Korea.,Department of Neurology, Gyeongsang National University College of Medicine, Jinju, Korea.,Institute of Health Science, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Seokwon Jung
- Department of Neurology, Gyeongsang National University Hospital, Jinju, Korea
| | - Chul Ho Yoon
- Department of Rehabilitation Medicine, Gyeongsang National University Hospital, Jinju, Korea.,Department of Rehabilitation Medicine, Gyeongsang National University College of Medicine, Jinju, Korea.,Institute of Health Science, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Oh-Young Kwon
- Department of Neurology, Gyeongsang National University Hospital, Jinju, Korea.,Department of Neurology, Gyeongsang National University College of Medicine, Jinju, Korea.,Institute of Health Science, Gyeongsang National University College of Medicine, Jinju, Korea
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Hao J, Xie H, Harp K, Chen Z, Siu KC. Effects of virtual reality intervention on neural plasticity in stroke rehabilitation: a systematic review. Arch Phys Med Rehabil 2021; 103:523-541. [PMID: 34352269 DOI: 10.1016/j.apmr.2021.06.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 06/03/2021] [Accepted: 06/07/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To systematically review and examine the current literature regarding the effects of Virtual Reality (VR)-based rehabilitation on neural plasticity changes in stroke survivors. DATA SOURCES Six bioscience and engineering databases were searched, including Medline via Ebsco, Embase, PsycINFO, IEEE Explore, Cumulative Index of Nursing and Allied Health, and Scopus. STUDY SELECTION Studies reporting on the pre-post assessment of a VR intervention with neural plasticity measures published between 2000-2021 were included. DATA EXTRACTION Two independent reviewers conducted study selection, data extraction and quality assessment. Methodological quality of controlled trials was assessed using the Physiotherapy Evidence Database scale. Risk of bias of pre-post intervention and case studies was evaluated using the National Institutes of Health Quality Assessment Tool. DATA SYNTHESIS Twenty-seven studies (Total n=232) were included. Seven randomized controlled trials were rated as good quality while the two clinical controlled trials were moderate. Based on the risk of bias assessment, one pre-post study and one case study were graded as good quality, one pre-post study and one case study were poor, the other 14 studies were all at fair. After the VR intervention, main neurophysiological findings across studies include: (1) improved interhemispheric balance, (2) enhanced cortical connectivity, (3) increased cortical mapping of the affected limb muscles, (4) the improved neural plasticity measures were correlated to the enhanced behavior outcomes, (5) increased activation of regions in frontal cortex and (6) the mirror neuron system may be involved. CONCLUSIONS Virtual reality induced changes in neural plasticity for stroke survivors. Positive correlations between the neural plasticity changes and functional recovery elucidates the mechanisms of VR's therapeutic effects in stroke rehabilitation. This review prompts systematic understanding of the neurophysiological mechanisms of VR-based stroke rehabilitation and summarizes the emerging evidence for ongoing innovation of VR systems and application in stroke rehabilitation.
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Affiliation(s)
- Jie Hao
- Division of Physical Therapy Education, College of Allied Health Professions, University of Nebraska Medical Center, Omaha, United States
| | - Haoyu Xie
- Division of Physical Therapy Education, College of Allied Health Professions, University of Nebraska Medical Center, Omaha, United States
| | - Kimberly Harp
- Leon S. McGoogan Health Sciences Library, University of Nebraska Medical Center, Omaha, United States
| | - Zhen Chen
- Department of Neurorehabilitation, The First Rehabilitation Hospital of Shanghai, Shanghai, China
| | - Ka-Chun Siu
- Division of Physical Therapy Education, College of Allied Health Professions, University of Nebraska Medical Center, Omaha, United States.
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Seo CH, Park CH, Jung MH, Baek S, Song J, Cha E, Ohn SH. Increased white matter diffusivity associated with phantom limb pain. Korean J Pain 2019; 32:271-279. [PMID: 31569919 PMCID: PMC6813898 DOI: 10.3344/kjp.2019.32.4.271] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/30/2019] [Accepted: 05/30/2019] [Indexed: 12/14/2022] Open
Abstract
Background We utilized diffusion tensor imaging (DTI) to evaluate the cerebral white matter changes that are associated with phantom limb pain in patients with unilateral arm amputation. It was anticipated that this would complement previous research in which we had shown that changes in cerebral blood volume were associated with the cerebral pain network. Methods Ten patients with phantom limb pain due to unilateral arm amputation and sixteen healthy age-matched controls were enrolled. The intensity of phantom limb pain was measured by the visual analogue scale (VAS) and depressive mood was assessed by the Hamilton depression rating scale. Diffusion tensor-derived parameters, including fractional anisotropy, mean diffusivity, axial diffusivity (AD), and radial diffusivity (RD), were computed from the DTI. Results Compared with controls, the cases had alterations in the cerebral white matter as a consequence of phantom limb pain, manifesting a higher AD of white matter in both hemispheres symmetrically after adjusting for individual depressive moods. In addition, there were associations between the RD of white matter and VAS scores primarily in the hemispheres related to the missing hand and in the corpus callosum. Conclusions The phantom limb pain after unilateral arm amputation induced plasticity in the white matter. We conclude that loss of white matter integrity, particularly in the hemisphere connected with the missing hand, is significantly correlated with phantom limb pain.
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Affiliation(s)
- Cheong Hoon Seo
- Department of Physical Medicine and Rehabilitation, Hallym University Hangang Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Chang-Hyun Park
- Center for Neuroprosthetics and Brain Mind Institute, Swiss Federal Institute of Technology (EPFL), Geneva, Switzerland
| | - Myung Hun Jung
- Department of Psychiatry, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Seungki Baek
- Department of Physical Medicine and Rehabilitation, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Jimin Song
- Department of Physical Medicine and Rehabilitation, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Eunsil Cha
- Department of Physical Medicine and Rehabilitation, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Suk Hoon Ohn
- Department of Physical Medicine and Rehabilitation, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
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Hwang DS, Kwak HB, Ko IG, Kim SE, Jin JJ, Ji ES, Choi HH, Kwon OY. Treadmill Exercise Improves Memory Function Depending on Circadian Rhythm Changes in Mice. Int Neurourol J 2016; 20:S141-149. [PMID: 27915477 DOI: 10.5213/inj.1632738.369] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 10/24/2016] [Indexed: 12/22/2022] Open
Abstract
Purpose Exercise enhances memory function by increasing neurogenesis in the hippocampus, and circadian rhythms modulate synaptic plasticity in the hippocampus. The circadian rhythm-dependent effects of treadmill exercise on memory function in relation with neurogenesis were investigated using mice. Methods The step-down avoidance test was used to evaluate short-term memory, the 8-arm maze test was used to test spatial learning ability, and 5-bromo-2’-deoxyuridine immunofluorescence was used to assess neurogenesis. Western blotting was also performed to assess levels of synaptic plasticity-associated proteins, such as brain-derived neurotrophic factor, tyrosine kinase receptor B, phosphorylated cAMP response element-binding protein, early growth response protein 1, postsynaptic density protein 95, and growth-associated protein 43. The mice in the treadmill exercise at zeitgeber 1 group started exercising 1 hour after sunrise, the mice in the treadmill exercise at zeitgeber 6 group started exercising 6 hours after sunrise, and the mice in the treadmill exercise at zeitgeber 13 group started exercising 1 hour after sunset. The mice in the exercise groups were forced to run on a motorized treadmill for 30 minutes once a day for 7 weeks. Results Treadmill exercise improved short-term memory and spatial learning ability, and increased hippocampal neurogenesis and the expression of synaptic plasticity-associated proteins. These effects of treadmill exercise were stronger in mice that exercised during the day or in the evening than in mice that exercised at dawn. Conclusions Treadmill exercise improved memory function by increasing neurogenesis and the expression of synaptic plasticity-associated proteins. These results suggest that the memory-enhancing effect of treadmill exercise may depend on circadian rhythm changes.
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Sharma A, Glick H, Deeves E, Duncan E. The P1 biomarker for assessing cortical maturation in pediatric hearing loss: a review. Otorinolaringologia 2015; 65:103-114. [PMID: 27688594 PMCID: PMC5036577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We review evidence for a high degree of neuroplasticity of the central auditory pathways in early childhood, citing evidence of studies of the P1 and N1 cortical auditory evoked potentials in congenitally deaf children receiving cochlear implants at different ages during childhood, children with auditory neuropathy spectrum disorder and children with hearing loss and comorbid multiple disabilities. We discuss neuroplasticity, including cortico-cortical de-coupling and cross-modal re-organization that occurs in deafness. We provide evidence for the clinical utility of the P1 cortical auditory evoked potential (CAEP) as a non-invasive biomarker that can be used to objectively assess maturation of auditory cortex in clinical cases of cochlear implant patients and candidates. Finally, we present clinical case studies in which the P1 CAEP biomarker proved useful in clinical decision-making regarding intervention in cases of single-sided deafness, auditory neuropathy spectrum disorder, mild hearing loss and hypoplastic auditory nerve.
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Affiliation(s)
- Anu Sharma
- Brain & Behavior Laboratory, Department of Speech,
Language, & Hearing Science and Institute of Cognitive Science, University of
Colorado, 2501 Kittredge Loop Road, 409 UCB, Boulder, CO 80309, USA
| | - Hannah Glick
- Brain & Behavior Laboratory, Department of Speech,
Language, & Hearing Science and Institute of Cognitive Science, University of
Colorado, 2501 Kittredge Loop Road, 409 UCB, Boulder, CO 80309, USA
| | - Emily Deeves
- Brain & Behavior Laboratory, Department of Speech,
Language, & Hearing Science and Institute of Cognitive Science, University of
Colorado, 2501 Kittredge Loop Road, 409 UCB, Boulder, CO 80309, USA
| | - Erin Duncan
- Brain & Behavior Laboratory, Department of Speech,
Language, & Hearing Science and Institute of Cognitive Science, University of
Colorado, 2501 Kittredge Loop Road, 409 UCB, Boulder, CO 80309, USA
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Fisher AR, Bacon CJ, Mannion JVH. The effect of cervical spine manipulation on postural sway in patients with nonspecific neck pain. J Manipulative Physiol Ther 2014; 38:65-73. [PMID: 25467613 DOI: 10.1016/j.jmpt.2014.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 08/25/2014] [Accepted: 09/01/2014] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This crossover study aimed to determine whether a single high-velocity, low-amplitude manipulation of the cervical spine would affect postural sway in adults with nonspecific neck pain. METHODS Ten participants received, in random order, 7 days apart, a high-velocity, low-amplitude manipulation applied to a dysfunctional spinal segment and a passive head-movement control. Four parameters of postural sway were measured before, immediately after, and at 5 and 10 minutes after each procedure. RESULTS Results showed no differences between interventions in change in any of the parameters. When changes before and immediately after each procedure were analyzed separately, only the control showed a significant change in the length of center of pressure path (an increase from median, 118 mm; interquartlie range, 93-137 mm to an increase to 132 mm; 112-147; P = .02). CONCLUSION This study failed to show evidence that single manipulation of the cervical spine influenced postural sway. Given the ability of the postural control system to reweight the hierarchy of sensory information to compensate for inadequacies in any 1 component, it is possible that any improvements in the mechanisms controlling postural sway elicited by the manipulative intervention may have been concealed.
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Affiliation(s)
- Alison R Fisher
- Osteopath, Department of Osteopathy, Unitec Institute of Technology, Auckland, New Zealand
| | - Catherine J Bacon
- Research Supervisor, Department of Osteopathy, Unitec Institute of Technology, Auckland, New Zealand; Postdoctoral Research Fellow, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.
| | - Jamie V H Mannion
- Lecturer, Department of Osteopathy, Unitec Institute of Technology, Auckland, New Zealand
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Mahmoud GS, Amer AS. Co-Application of Corticosterone and Growth Hormone Upregulates NR2B Protein and Increases the NR2B:NR2A Ratio and Synaptic Transmission in the Hippocampus. Sultan Qaboos Univ Med J 2014; 14:e486-e494. [PMID: 25364551 PMCID: PMC4205060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/10/2014] [Accepted: 06/04/2014] [Indexed: 06/04/2023] Open
Abstract
OBJECTIVES This in vitro study aimed to investigate the possible mechanism underlying the protective effect of growth hormone (GH) on hippocampal function during periods of heightened glucocorticoid exposure. METHODS This study was conducted between January and June 2005 at the Joan C. Edwards School of Medicine, Marshall University, in Huntington, West Virginia, USA. The effects of the co-application of GH and corticosterone (CORT) were tested at different concentrations on the field excitatory postsynaptic potentials (fEPSPs) of the hippocampal slices of rats in two different age groups. Changes in the protein expression of N-methyl-D-aspartate receptor (NMDAR) subunits NR1, NR2B and NR2A were measured in hippocampal brain slices treated with either artificial cerebrospinal fluid (ACSF), low doses of CORT alone or both CORT and GH for three hours. RESULTS The co-application of CORT and GH was found to have an additive effect on hippocampal synaptic transmission compared to either drug alone. Furthermore, the combined use of low concentrations of GH and CORT was found to have significantly higher effects on the enhancement of fEPSPs in older rats compared to young ones. Both GH and CORT enhanced the protein expression of the NR2A subunit. Simultaneous exposure to low concentrations of GH and CORT significantly enhanced NR2B expression and increased the NR2B:NR2A ratio. In contrast, perfusion with CORT alone caused significant suppression in the NR1 and NR2B protein expression and a decrease in the NR2B:NR2A ratio. CONCLUSION These results suggest that NMDARs provide a potential target for mediating the GH potential protective effect against stress and age-related memory and cognitive impairment.
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Affiliation(s)
- Ghada S. Mahmoud
- Departments of Medical Physiology, Assiut University, Assiut, Egypt
| | - Ayman S. Amer
- Human Anatomy & Embryology, Faculty of Medicine, Assiut University, Assiut, Egypt
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Dick G, Tan CL, Alves JN, Ehlert EME, Miller GM, Hsieh-Wilson LC, Sugahara K, Oosterhof A, van Kuppevelt TH, Verhaagen J, Fawcett JW, Kwok JCF. Semaphorin 3A binds to the perineuronal nets via chondroitin sulfate type E motifs in rodent brains. J Biol Chem 2013; 288:27384-27395. [PMID: 23940048 DOI: 10.1074/jbc.m111.310029] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Chondroitin sulfate (CS) and the CS-rich extracellular matrix structures called perineuronal nets (PNNs) restrict plasticity and regeneration in the CNS. Plasticity is enhanced by chondroitinase ABC treatment that removes CS from its core protein in the chondroitin sulfate proteoglycans or by preventing the formation of PNNs, suggesting that chondroitin sulfate proteoglycans in the PNNs control plasticity. Recently, we have shown that semaphorin3A (Sema3A), a repulsive axon guidance molecule, localizes to the PNNs and is removed by chondroitinase ABC treatment (Vo, T., Carulli, D., Ehlert, E. M., Kwok, J. C., Dick, G., Mecollari, V., Moloney, E. B., Neufeld, G., de Winter, F., Fawcett, J. W., and Verhaagen, J. (2013) Mol. Cell. Neurosci. 56C, 186-200). Sema3A is therefore a candidate for a PNN effector in controlling plasticity. Here, we characterize the interaction of Sema3A with CS of the PNNs. Recombinant Sema3A interacts with CS type E (CS-E), and this interaction is involved in the binding of Sema3A to rat brain-derived PNN glycosaminoglycans, as demonstrated by the use of CS-E blocking antibody GD3G7. In addition, we investigate the release of endogenous Sema3A from rat brain by biochemical and enzymatic extractions. Our results confirm the interaction of Sema3A with CS-E containing glycosaminoglycans in the dense extracellular matrix of rat brain. We also demonstrate that the combination of Sema3A and PNN GAGs is a potent inhibitor of axon growth, and this inhibition is reduced by the CS-E blocking antibody. In conclusion, Sema3A binding to CS-E in the PNNs may be a mechanism whereby PNNs restrict growth and plasticity and may represent a possible point of intervention to facilitate neuronal plasticity.
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Affiliation(s)
- Gunnar Dick
- John van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, United Kingdom; Department of Biosciences, Faculty of Mathematics and Natural Sciences, University of Oslo, 0316 Oslo, Norway
| | - Chin Lik Tan
- John van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, United Kingdom
| | - Joao Nuno Alves
- John van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, United Kingdom
| | - Erich M E Ehlert
- Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, 1105 BA Amsterdam, The Netherlands
| | - Gregory M Miller
- California Institute of Technology and Howard Hughes Medical Institute, Division of Chemistry and Chemical Engineering, Pasadena, California 91125
| | - Linda C Hsieh-Wilson
- California Institute of Technology and Howard Hughes Medical Institute, Division of Chemistry and Chemical Engineering, Pasadena, California 91125
| | - Kazuyuki Sugahara
- Laboratory of Proteoglycan Signaling and Therapeutics, Graduate School of Life Science, Faculty of Advanced Life Science, Hokkaido University, 001-0021 Sapporo, Japan
| | - Arie Oosterhof
- Department of Biochemistry, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, P. O. Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Toin H van Kuppevelt
- Department of Biochemistry, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, P. O. Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Joost Verhaagen
- Netherlands Institute for Neuroscience, Institute of the Royal Netherlands Academy of Arts and Sciences, 1105 BA Amsterdam, The Netherlands; Centre for Neurogenomics and Cognitive Research, Vrije Universiteit Amsterdam, 1081HV Amsterdam, The Netherlands
| | - James W Fawcett
- John van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, United Kingdom
| | - Jessica C F Kwok
- John van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, United Kingdom.
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Seo HG, Kim DY, Park HW, Lee SU, Park SH. Early motor balance and coordination training increased synaptophysin in subcortical regions of the ischemic rat brain. J Korean Med Sci 2010; 25:1638-45. [PMID: 21060754 PMCID: PMC2967002 DOI: 10.3346/jkms.2010.25.11.1638] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Accepted: 05/24/2010] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to evaluate the effect of early motor balance and coordination training on functional recovery and brain plasticity in an ischemic rat stroke model, compared with simple locomotor exercise. Adult male Sprague-Dawley rats with cortical infarcts were trained under one of four conditions: nontrained control, treadmill training, motor training on the Rota-rod, or both Rota-rod and treadmill training. All types of training were performed from post-operation day 1 to 14. Neurological and behavioral performance was evaluated by Menzies' scale, the prehensile test, and the limb placement test, at post-operation day 1, 7, and 14. Both Rota-rod and treadmill training increased the expression of synaptophysin in subcortical regions of the ischemic hemisphere including the hippocampus, dentate gyrus, and thalamus, but did not affect levels of brain-derived neurotrophic factor or tyrosin kinase receptor B. The Rota-rod training also improved Menzies' scale and limb placement test scores, whereas the simple treadmill training did neither. The control group showed significant change only in Menzies' scale score. This study suggests that early motor balance and coordination training may induce plastic changes in subcortical regions of the ischemic hemisphere after stroke accompanied with the recovery of sensorimotor performance.
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Affiliation(s)
- Han Gil Seo
- Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea
| | - Dae-Yul Kim
- Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hee Won Park
- Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea
| | - Shi-Uk Lee
- Department of Rehabilitation Medicine, Seoul National University Boramae Hospital, Seoul, Korea
| | - Sung-Hye Park
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
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Abstract
INTRODUCTION Individuals with sensorineural hearing loss are often able to regain some lost auditory function with the help of hearing aids. However, hearing aids are not able to overcome auditory distortions such as impaired frequency resolution and speech understanding in noisy environments. The coexistence of peripheral hearing loss and a central auditory deficit may contribute to patient dissatisfaction with amplification, even when audiological tests indicate nearly normal hearing thresholds. OBJECTIVE This study was designed to validate the effects of a formal auditory training program in adult hearing aid users with mild to moderate sensorineural hearing loss. METHODS FOURTEEN BILATERAL HEARING AID USERS WERE DIVIDED INTO TWO GROUPS: seven who received auditory training and seven who did not. The training program was designed to improve auditory closure, figure-to-ground for verbal and nonverbal sounds and temporal processing (frequency and duration of sounds). Pre- and post-training evaluations included measuring electrophysiological and behavioral auditory processing and administration of the Abbreviated Profile of Hearing Aid Benefit (APHAB) self-report scale. RESULTS The post-training evaluation of the experimental group demonstrated a statistically significant reduction in P3 latency, improved performance in some of the behavioral auditory processing tests and higher hearing aid benefit in noisy situations (p-value < 0,05). No changes were noted for the control group (p-value <0,05). CONCLUSION The results demonstrated that auditory training in adult hearing aid users can lead to a reduction in P3 latency, improvements in sound localization, memory for nonverbal sounds in sequence, auditory closure, figure-to-ground for verbal sounds and greater benefits in reverberant and noisy environments.
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Affiliation(s)
- Daniela Gil
- Departamento de Fonoaudiologia, Universidade Federal de São Paulo - São Paulo/SP, Brazil,
, Tel.: 55 11 5576.4531
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Boal R, Gillette RG, Borman WH. Utilizing molecular details of the pain system to illustrate biochemical principles. J Chiropr Educ 2010; 24:187-193. [PMID: 21048881 PMCID: PMC2967343 DOI: 10.7899/1042-5055-24.2.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2009] [Revised: 06/04/2009] [Accepted: 03/06/2010] [Indexed: 05/30/2023]
Abstract
To capture student interest and show clinical relevance, molecular details from the pain system can be used as supplemental examples to basic biochemistry lectures. Lecture topics include glutamate, substance P, calmodulin-dependent protein kinase II, synaptic proteases, calcitonin gene-related peptide, and neuronal protein synthesis. These topics are utilized to illustrate basic biochemical issues and are linked to pain-related topics such as pain transmission, synaptic plasticity, long-term potentiation, and central sensitization. For analysis, a brief survey was administered to evaluate student attitudes toward a representative lecture segment. Survey results support the premise that utilizing the pain system is an effective tool to engage chiropractic students during basic biochemistry lectures.
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Affiliation(s)
- Robert Boal
- Address correspondence to: Robert Boal, University of Western States, 2900 NE 132nd Avenue, Portland, OR 97230 (e-mail: )
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