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Zhang J, Xiao X, Jin Q, Li J, Zhong D, Li Y, Qin Y, Zhang H, Liu X, Xue C, Zheng Z, Jin R. The effect and safety of constraint-induced movement therapy for post-stroke motor dysfunction: a meta-analysis and trial sequential analysis. Front Neurol 2023; 14:1137320. [PMID: 37144004 PMCID: PMC10151521 DOI: 10.3389/fneur.2023.1137320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 03/13/2023] [Indexed: 05/06/2023] Open
Abstract
Background Due to motor function insufficiency, patients with post-stroke motor dysfunction (PSMD) have limitations in performing an activity, feel restricted during social participation, and feel impaired in their quality of life. Constraint-induced movement therapy (CIMT) is a neurorehabilitation technique, but its effectiveness on PSMD after stroke still remains controversial. Objective This meta-analysis and trial sequential analysis (TSA) aimed to comprehensively evaluate the effect and safety of CIMT for PSMD. Methods Four electronic databases were searched from their inception to 1 January 2023 to identify randomized controlled trials (RCTs) investigating the effectiveness of CIMT for PSMD. Two reviewers independently extracted the data and assessed the risk of bias and reporting quality. The primary outcome was a motor activity log for the amount of use (MAL-AOU) and the quality of movement (MAL-QOM). RevMan 5.4, Statistical Package for Social Sciences (SPSS) 25.0, and STATA 13.0 software were used for statistical analysis. The certainty of the evidence was appraised using the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) system. We also performed the TSA to assess the reliability of the evidence. Results A total of 44 eligible RCTs were included. Our results showed that CIMT combined with conventional rehabilitation (CR) was superior to CR in improving MAL-AOU and MAL-QOM scores. The results of TSA indicated that the above evidence was reliable. Subgroup analysis demonstrated that CIMT (≥6 h per day or duration ≤ 20 days) combined with CR was more effective than CR. Meanwhile, both CIMT and modified CIMT (mCIMT) combined with CR were more efficient than CR at all stages of stroke. No severe CIMT-related adverse events occurred. Conclusion CIMT may be an optional and safe rehabilitation therapy to improve PSMD. However, due to limited studies, the optimal protocol of CIMT for PSMD was undetermined, and more RCTs are required for further exploration. Clinical trial registration https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=143490, identifier: CRD42019143490.
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Affiliation(s)
- Jiaming Zhang
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Xianjun Xiao
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Qizu Jin
- The Third Hospital of Mianyang, Sichuan Mental Health Center, Mianyang, Sichuan, China
| | - Juan Li
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Dongling Zhong
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Yuxi Li
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Yan Qin
- The Third Hospital of Mianyang, Sichuan Mental Health Center, Mianyang, Sichuan, China
| | - Hong Zhang
- The Third Hospital of Mianyang, Sichuan Mental Health Center, Mianyang, Sichuan, China
| | - Xiaobo Liu
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Chen Xue
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Zhong Zheng
- Center for Neurobiological Detection, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- *Correspondence: Zhong Zheng
| | - Rongjiang Jin
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
- Rongjiang Jin
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Achzet LM, Astruc-Diaz F, Beske PH, Natale NR, Denton TT, Jackson DA. Liposomal Encapsulated FSC231, a PICK1 Inhibitor, Prevents the Ischemia/Reperfusion-Induced Degradation of GluA2-Containing AMPA Receptors. Pharmaceutics 2021; 13:pharmaceutics13050636. [PMID: 33946313 PMCID: PMC8146086 DOI: 10.3390/pharmaceutics13050636] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/22/2021] [Accepted: 04/27/2021] [Indexed: 11/16/2022] Open
Abstract
Strokes remain one of the leading causes of disability within the United States. Despite an enormous amount of research effort within the scientific community, very few therapeutics are available for stroke patients. Cytotoxic accumulation of intracellular calcium is a well-studied phenomenon that occurs following ischemic stroke. This intracellular calcium overload results from excessive release of the excitatory neurotransmitter glutamate, a process known as excitotoxicity. Calcium-permeable AMPA receptors (AMPARs), lacking the GluA2 subunit, contribute to calcium cytotoxicity and subsequent neuronal death. The internalization and subsequent degradation of GluA2 AMPAR subunits following oxygen-glucose deprivation/reperfusion (OGD/R) is, at least in part, mediated by protein-interacting with C kinase-1 (PICK1). The purpose of the present study is to evaluate whether treatment with a PICK1 inhibitor, FSC231, prevents the OGD/R-induced degradation of the GluA2 AMPAR subunit. Utilizing an acute rodent hippocampal slice model system, we determined that pretreatment with FSC231 prevented the OGD/R-induced association of PICK1-GluA2. FSC231 treatment during OGD/R rescues total GluA2 AMPAR subunit protein levels. This suggests that the interaction between GluA2 and PICK1 serves as an important step in the ischemic/reperfusion-induced reduction in total GluA2 levels.
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Affiliation(s)
- Lindsay M. Achzet
- Department of Pharmaceutical Sciences, Washington State University Health Sciences, Spokane, WA 99202, USA; (L.M.A.); (T.T.D.)
| | - Fanny Astruc-Diaz
- Department of Biomedical and Pharmaceutical Sciences, The University of Montana, Missoula, MT 59812, USA; (F.A.-D.); (P.H.B.); (N.R.N.)
| | - Phillip H. Beske
- Department of Biomedical and Pharmaceutical Sciences, The University of Montana, Missoula, MT 59812, USA; (F.A.-D.); (P.H.B.); (N.R.N.)
| | - Nicholas R. Natale
- Department of Biomedical and Pharmaceutical Sciences, The University of Montana, Missoula, MT 59812, USA; (F.A.-D.); (P.H.B.); (N.R.N.)
| | - Travis T. Denton
- Department of Pharmaceutical Sciences, Washington State University Health Sciences, Spokane, WA 99202, USA; (L.M.A.); (T.T.D.)
- Department of Biomedical Sciences, Elson S. Floyd, College of Medicine, Washington State University Health Sciences, Spokane, WA 99202, USA
- Steve Gleason Institute for Neuroscience, Washington State University Health Sciences, Spokane, WA 99202, USA
| | - Darrell A. Jackson
- Department of Pharmaceutical Sciences, Washington State University Health Sciences, Spokane, WA 99202, USA; (L.M.A.); (T.T.D.)
- Correspondence: ; Tel.: +1-509-368-6542
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Hu J, Li C, Hua Y, Liu P, Gao B, Wang Y, Bai Y. Constraint-induced movement therapy improves functional recovery after ischemic stroke and its impacts on synaptic plasticity in sensorimotor cortex and hippocampus. Brain Res Bull 2020; 160:8-23. [PMID: 32298779 DOI: 10.1016/j.brainresbull.2020.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/12/2020] [Accepted: 04/06/2020] [Indexed: 01/28/2023]
Abstract
Constraint-induced movement therapy (CIMT) has proven to be an effective way to restore functional deficits following stroke in human and animal studies, but its underlying neural plasticity mechanism remains unknown. Accumulating evidence indicates that rehabilitation after stroke is closely associated with synaptic plasticity. We therefore investigated the impact of CIMT on synaptic plasticity in ipsilateral and contralateral brain of rats following stroke. Rats were subjected to 90 minutes of transient middle cerebral artery occlusion (MCAO). CIMT was performed from 7 days after stroke and lasted for two weeks. Modified Neurology Severity Score (mNSS) and the ladder rung walking task tests were conducted at 7,14 and 21 days after stroke. Golgi-Cox staining was used to observe the plasticity changes of dendrites and dendritic spines. The expression of glutamate receptors (GluR1, GluR2 and NR1) were examined by western blot. Our data suggest that the dendrites and dendritic spines are damaged to varying degrees in bilateral sensorimotor cortex and hippocampus after acute stroke. CIMT treatment enhances the plasticity of dendrites and dendritic spines in the ipsilateral and contralateral sensorimotor cortex, increases the expression of synaptic GluR2 in ipsilateral sensorimotor cortex, which may be mechanisms for CIMT to improve functional recovery after ischemic stroke.
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Affiliation(s)
- Jian Hu
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Ce Li
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Yan Hua
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Peile Liu
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Beiyao Gao
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Yuyuan Wang
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Yulong Bai
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai, China.
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Zhou Z, Ren X, Zhou W, Zheng L. Willed‑movement training reduces middle cerebral artery occlusion‑induced motor deficits and improves angiogenesis and survival of cerebral endothelial cells via upregulating hypoxia‑inducible factor‑1α. Mol Med Rep 2019; 20:3910-3916. [PMID: 31432135 DOI: 10.3892/mmr.2019.10578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 04/11/2019] [Indexed: 11/05/2022] Open
Abstract
Willed movement facilitates neurological rehabilitation in patients with stroke. Focal ischaemia is the hallmark of patients after stroke, though the detailed molecular mechanism by which willed movement affects neurological rehabilitation after stroke is not fully understood. The aim of the present study was to dissect the key factors of the hypoxia signaling pathway responsible for the willed movement‑improved rehabilitation. Sprague‑Dawley rats undergoing right middle cerebral artery occlusion (MCAO) surgery were randomly divided into four groups: MCAO alone, willed movement (WM), environmental modification (EM) and common rehabilitation (CR). The neurological behaviour score was assessed, and infarction areas were detected by TTC staining. In addition, angiogenesis‑associated genes (vascular epithelial growth factor, angiogenin‑1, matrix metalloproteinases‑2 and ‑9) and hypoxia inducible factor (HIF)‑1α expression was investigated in cells derived from MCAO, WM, EM and CR groups. Finally, the role of HIF‑1α using HIF‑1α knockdown in HUVECs under hypoxic conditions was evaluated. WM significantly improved neurological behaviour and rehabilitation by increasing the behaviour score and by decreasing the infarction area. In addition, CR, EM and WM raised the expression of angiogenesis‑associated genes and HIF‑1α, thereby promoting in vitro tube formation of primary endothelial cells. Knockdown of HIF‑1α in HUVECs restored the increased expression of angiogenesis‑associated genes to normal levels and inhibited in vitro tube formation of HUVECs. Willed movement most effectively improved the neurological rehabilitation of rats with focal ischaemia through upregulation of HIF‑1α. The present findings provide insight into willed movement‑facilitated rehabilitation and may help treat stroke‑triggered motor deficit and improve angiogenesis of cerebral endothelial cells.
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Affiliation(s)
- Zhiwen Zhou
- Department of Neurology, Hunan Provincial People's Hospital, The First‑Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410016, P.R. China
| | - Xiang Ren
- Department of Neurology, Hunan Provincial People's Hospital, The First‑Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410016, P.R. China
| | - Wensheng Zhou
- Department of Neurology, Hunan Provincial People's Hospital, The First‑Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410016, P.R. China
| | - Lijun Zheng
- Department of Rehabilitation, Hunan Provincial People's Hospital, The First‑Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410016, P.R. China
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Chen X, Xie ZH, Lv YX, Tang QP, Zhang H, Zhang JY, Wu B, Jiang WH. A proteomics analysis reveals that A2M might be regulated by STAT3 in persistent allergic rhinitis. Clin Exp Allergy 2017; 46:813-24. [PMID: 27228572 DOI: 10.1111/cea.12711] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 12/11/2015] [Accepted: 01/05/2016] [Indexed: 12/23/2022]
Abstract
BACKGROUND Proteomics tools can be used to identify the differentially expressed proteins related to allergic rhinitis (AR). However, the large numbers of proteins related to AR have not yet been explored using an advanced quantitative proteomics approach, known as isobaric tags for relative and absolute quantitation (iTRAQ). OBJECTIVES To identify differentially expressed proteins in persistent AR patients and to explore the regulatory signalling pathways involving the identified proteins. METHODS Forty-five persistent AR patients and 20 healthy controls were recruited for this study. iTRAQ was used to identify the proteins that were differentially expressed between these two groups, and a bioinformatics analysis was then conducted to identify the signalling pathways associated with the identified proteins. Immunofluorescence labelling was performed to detect alpha-2-macroglobulin (A2M), STAT3, p-STAT3 and IL17 in the nasal mucosa. RESULTS A total of 133 differentially expressed proteins were identified. We then determined the top 10 regulatory pathways associated with these proteins and found that the blood coagulation pathway had the most significant association. A2M, a protein involved in the blood coagulation pathway, was found to be differentially expressed in the serum of AR patients. The bioinformatics analysis indicated that STAT3 is an upstream transcription factor that might regulate A2M expression. An immunofluorescence study further confirmed that STAT3 and A2M are co-localized in nasal mucosa cells. Additionally, A2M, STAT3, p-STAT3, and IL17 are elevated in AR patients. The expressional level of A2M is positively related to IL17 and the symptom of the congestion in AR subjects. CONCLUSIONS The blood coagulation pathway may be a key regulatory network pathway contributing to the allergic inflammatory response in AR patients. A2M, which is regulated by STAT3, may be an important protein in the pathogenesis of allergic rhinitis in AR patients.
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Affiliation(s)
- X Chen
- Department of Otolaryngology-Skull Base Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Z H Xie
- Department of Otolaryngology-Skull Base Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Y X Lv
- Department of Otolaryngology-Skull Base Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Q P Tang
- Department of Rehabilitation, Brain Hospital of Hunan Province, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - H Zhang
- Department of Otolaryngology-Skull Base Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - J Y Zhang
- Department of Otolaryngology-Skull Base Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - B Wu
- Department of Otolaryngology-Skull Base Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - W H Jiang
- Department of Otolaryngology-Skull Base Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
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Zhou ZW, Yang QD, Tang QP, Yang J, Guo RJ, Jiang W. Effect of willed movement training on neurorehabilitation after focal cerebral ischemia and on the neural plasticity-associated signaling pathway. Mol Med Rep 2017; 17:1173-1181. [PMID: 29115485 DOI: 10.3892/mmr.2017.7964] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Accepted: 09/12/2017] [Indexed: 11/06/2022] Open
Abstract
Neurorehabilitation training is a therapeutic intervention for the loss of neural function induced by focal cerebral ischemia, however, the effect varies depending on the neurorehabilitation exercises. Willed movement (WM) training is defined as task‑oriented training, which increases enthusiasm of patients to accomplish a specific task. The current study was performed to the evaluate effect of WM training on neurorehabilitation following focal cerebral ischemia, and further investigate the influence on neural plasticity‑associated signaling pathway. Sprague‑Dawley rats following temporary middle cerebral artery occlusion (tMCAO) were randomly divided into four groups: tMCAO (no rehabilitation training), CR (control rehabilitation), EM (environmental modification) and WM groups. Rats in the CR group were forced to exercise (running) in a rotating wheel. In the WM group, food was used to entice rats to climb on a herringbone ladder. Herringbone ladders were also put into the cages of the rats in the CR and EM groups, however without the food attraction. WM group exhibited an improvement in neurobehavioral performance compared with other groups. TTC staining indicated an evident reduction in brain damage in the WM group. There were increased synaptic junctions following WM training, based on the observations of transmission election microscopy. Investigation of the molecular mechanism suggested that WM training conferred the greatest effect on stimulating the extracellular signal‑related kinase (ERK)/cyclic adenosine monophosphate response element‑binding protein 1 (CREB) pathway and glutamate receptor 2 (GluR2)/glutamate receptor interacting protein 1‑associated protein 1 (GRASP‑1)/protein interacting with C‑kinase 1 (PICK1) cascades among groups. Collectively, the improvement of neurobehavioral performance by WM training following tMCAO is suggested to involve the ERK/CREB pathway and GluR2/GRASP‑1/PICK1 cascades. The present study provided a preliminary foundation for future research on the therapeutic effect of WM training against stroke‑induced neuron damage.
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Affiliation(s)
- Zhi-Wen Zhou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Qi-Dong Yang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Qing-Ping Tang
- Department of Physiology, School of Basic Medical Sciences, Central South University, Changsha, Hunan 410008, P.R. China
| | - Jie Yang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Rong-Jing Guo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Wen Jiang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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Tang QP, Shen Q, Wu LX, Feng XL, Liu H, Wu B, Huang XS, Wang GQ, Li ZH, Liu ZJ. STAT3 signal that mediates the neural plasticity is involved in willed-movement training in focal ischemic rats. J Zhejiang Univ Sci B 2017; 17:493-502. [PMID: 27381726 DOI: 10.1631/jzus.b1500297] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Willed-movement training has been demonstrated to be a promising approach to increase motor performance and neural plasticity in ischemic rats. However, little is known regarding the molecular signals that are involved in neural plasticity following willed-movement training. To investigate the potential signals related to neural plasticity following willed-movement training, littermate rats were randomly assigned into three groups: middle cerebral artery occlusion, environmental modification, and willed-movement training. The infarct volume was measured 18 d after occlusion of the right middle cerebral artery. Reverse transcription-polymerase chain reaction (PCR) and immunofluorescence staining were used to detect the changes in the signal transducer and activator of transcription 3 (STAT3) mRNA and protein, respectively. A chromatin immunoprecipitation was used to investigate whether STAT3 bound to plasticity-related genes, such as brain-derived neurotrophic factor (BDNF), synaptophysin, and protein interacting with C kinase 1 (PICK1). In this study, we demonstrated that STAT3 mRNA and protein were markedly increased following 15-d willed-movement training in the ischemic hemispheres of the treated rats. STAT3 bound to BDNF, PICK1, and synaptophysin promoters in the neocortical cells of rats. These data suggest that the increased STAT3 levels after willed-movement training might play critical roles in the neural plasticity by directly regulating plasticity-related genes.
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Affiliation(s)
- Qing-Ping Tang
- Department of Rehabilitation, Brain Hospital of Hunan Province, Hunan University of Chinese Medicine, Changsha 410007, China.,Department of Physiology, School of Basic Medical Sciences, Central South University, Changsha 410078, China
| | - Qin Shen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Li-Xiang Wu
- Department of Physiology, School of Basic Medical Sciences, Central South University, Changsha 410078, China
| | - Xiang-Ling Feng
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, China
| | - Hui Liu
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, China
| | - Bei Wu
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiao-Song Huang
- Department of Neurology, Brain Hospital of Hunan Province, Hunan University of Chinese Medicine, Changsha 410007, China
| | - Gai-Qing Wang
- Department of Neurology, the Second Hospital, Shanxi Medical University, Taiyuan 030001, China
| | - Zhong-Hao Li
- Department of Neurology, China-Japan Friendship Hospital, Beijing 100029, China
| | - Zun-Jing Liu
- Department of Neurology, China-Japan Friendship Hospital, Beijing 100029, China
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Multiple faces of protein interacting with C kinase 1 (PICK1): Structure, function, and diseases. Neurochem Int 2016; 98:115-21. [DOI: 10.1016/j.neuint.2016.03.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 03/02/2016] [Accepted: 03/02/2016] [Indexed: 11/19/2022]
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Nie J, Yang X. Modulation of Synaptic Plasticity by Exercise Training as a Basis for Ischemic Stroke Rehabilitation. Cell Mol Neurobiol 2016; 37:5-16. [PMID: 26910247 DOI: 10.1007/s10571-016-0348-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 02/11/2016] [Indexed: 12/23/2022]
Abstract
In recent years, rehabilitation of ischemic stroke draws more and more attention in the world, and has been linked to changes of synaptic plasticity. Exercise training improves motor function of ischemia as well as cognition which is associated with formation of learning and memory. The molecular basis of learning and memory might be synaptic plasticity. Research has therefore been conducted in an attempt to relate effects of exercise training to neuroprotection and neurogenesis adjacent to the ischemic injury brain. The present paper reviews the current literature addressing this question and discusses the possible mechanisms involved in modulation of synaptic plasticity by exercise training. This review shows the pathological process of synaptic dysfunction in ischemic roughly and then discusses the effects of exercise training on scaffold proteins and regulatory protein expression. The expression of scaffold proteins generally increased after training, but the effects on regulatory proteins were mixed. Moreover, the compositions of postsynaptic receptors were changed and the strength of synaptic transmission was enhanced after training. Finally, the recovery of cognition is critically associated with synaptic remodeling in an injured brain, and the remodeling occurs through a number of local regulations including mRNA translation, remodeling of cytoskeleton, and receptor trafficking into and out of the synapse. We do provide a comprehensive knowledge of synaptic plasticity enhancement obtained by exercise training in this review.
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Affiliation(s)
- Jingjing Nie
- Department of Neurology, Xiang Ya Hospital, Central South University, Xiang Ya Road 87, Changsha, 410008, Hunan, China
| | - Xiaosu Yang
- Department of Neurology, Xiang Ya Hospital, Central South University, Xiang Ya Road 87, Changsha, 410008, Hunan, China.
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A Computational Model for the AMPA Receptor Phosphorylation Master Switch Regulating Cerebellar Long-Term Depression. PLoS Comput Biol 2016; 12:e1004664. [PMID: 26807999 PMCID: PMC4726815 DOI: 10.1371/journal.pcbi.1004664] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 11/12/2015] [Indexed: 02/08/2023] Open
Abstract
The expression of long-term depression (LTD) in cerebellar Purkinje cells results from the internalisation of α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid receptors (AMPARs) from the postsynaptic membrane. This process is regulated by a complex signalling pathway involving sustained protein kinase C (PKC) activation, inhibition of serine/threonine phosphatase, and an active protein tyrosine phosphatase, PTPMEG. In addition, two AMPAR-interacting proteins-glutamate receptor-interacting protein (GRIP) and protein interacting with C kinase 1 (PICK1)-regulate the availability of AMPARs for trafficking between the postsynaptic membrane and the endosome. Here we present a new computational model of these overlapping signalling pathways. The model reveals how PTPMEG cooperates with PKC to drive LTD expression by facilitating the effect of PKC on the dissociation of AMPARs from GRIP and thus their availability for trafficking. Model simulations show that LTD expression is increased by serine/threonine phosphatase inhibition, and negatively regulated by Src-family tyrosine kinase activity, which restricts the dissociation of AMPARs from GRIP under basal conditions. We use the model to expose the dynamic balance between AMPAR internalisation and reinsertion, and the phosphorylation switch responsible for the perturbation of this balance and for the rapid plasticity initiation and regulation. Our model advances the understanding of PF-PC LTD regulation and induction, and provides a validated extensible platform for more detailed studies of this fundamental synaptic process.
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Willed-movement training reduces brain damage and enhances synaptic plasticity related proteins synthesis after focal ischemia. Brain Res Bull 2016; 120:90-6. [DOI: 10.1016/j.brainresbull.2015.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Revised: 10/30/2015] [Accepted: 11/03/2015] [Indexed: 12/27/2022]
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Neuroprotection of Early Locomotor Exercise Poststroke: Evidence From Animal Studies. Can J Neurol Sci 2015; 42:213-20. [PMID: 26041314 DOI: 10.1017/cjn.2015.39] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Early locomotor exercise after stroke has attracted a great deal of attention in clinical and animal research in recent years. A series of animal studies showed that early locomotor exercise poststroke could protect against ischemic brain injury and improve functional outcomes through the promotion of angiogenesis, inhibition of acute inflammatory response and neuron apoptosis, and protection of the blood-brain barrier. However, to date, the clinical application of early locomotor exercise poststroke was limited because some clinicians have little confidence in its effectiveness. Here we review the current progress of early locomotor exercise poststroke in animal models. We hope that a comprehensive awareness of the early locomotor exercise poststroke may help to implement early locomotor exercise more appropriately in treatment for ischemic stroke.
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