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Simmons SB, Skolaris A, Love R, Fricker T, Penko AL, Li Y, Lapin B, Streicher M, Bethoux F, Linder SM. Intensive Aerobic Cycling Is Feasible and Elicits Improvements in Gait Velocity in Individuals With Multiple Sclerosis: A Preliminary Study. Int J MS Care 2024; 26:119-124. [PMID: 38765298 PMCID: PMC11096857 DOI: 10.7224/1537-2073.2023-042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
BACKGROUND Aerobic exercise (AEx) has many potential benefits; however, it is unknown whether individuals with multiple sclerosis (MS) can attain the optimal intensity and duration to harness its effects. Forced-rate exercise (FE) is a novel paradigm in which the voluntary pedaling rate during cycling is supplemented to achieve a higher exercise intensity. The aim of this pilot trial was to investigate the feasibility and initial efficacy of a 12-week FE or voluntary exercise (VE) cycling intervention for individuals with MS. METHODS Twenty-two participants with MS (Expanded Disability Severity Scale [EDSS] 2.0-6.5) were randomly assigned to FE (n = 12) or VE (n = 10), each with twice weekly 45-minute sessions at a prescribed intensity of 60% to 80% of maximum heart rate (HR). RESULTS Eighteen individuals (FE = 11; VE = 7) completed the intervention, however, adaptations were required in both groups to overcome barriers to cycling. Overall, participants exercised for an average of 42.2 ± 2.3 minutes at an aerobic intensity of 65% ± 7% of maximum HR and a pedaling cadence of 67.3 ± 13.3 RPM. Cycling led to improved treadmill walking speed (0.61 to 0.68 m/sec, P = .010), with somewhat greater improvement with FE compared to VE (increase of 0.09 vs 0.03 m/s, respectively, P = .17) post intervention. Notably, the participant with the highest disability level (EDSS 6.5) tolerated FE but not VE. CONCLUSIONS Aerobic exercise is feasible for individuals with MS, although those with increased disability may require novel paradigms such as FE to achieve targeted intensity. Further trials are warranted to investigate the effects of FE across the MS disability spectrum.
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Affiliation(s)
- Sarah B. Simmons
- From the Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, WA, USA
- Mellen Center for Multiple Sclerosis Treatment and Research
| | | | - Ryan Love
- Department of Physical Medicine and Rehabilitation
| | - Tori Fricker
- Department of Physical Medicine and Rehabilitation
| | - Amanda L. Penko
- Department of Physical Medicine and Rehabilitation
- Department of Biomedical Engineering
| | - Yadi Li
- Cleveland Clinic, Cleveland, OH; Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
- Center for Outcomes Research and Evaluation, Neurological Institute, Cleveland Clinic, Cleveland, OH
| | - Brittany Lapin
- Cleveland Clinic, Cleveland, OH; Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
- Center for Outcomes Research and Evaluation, Neurological Institute, Cleveland Clinic, Cleveland, OH
| | | | - Francois Bethoux
- Mellen Center for Multiple Sclerosis Treatment and Research
- Department of Physical Medicine and Rehabilitation
| | - Susan M. Linder
- Department of Physical Medicine and Rehabilitation
- Department of Biomedical Engineering
- and Concussion Center, Cleveland Clinic, Cleveland, OH
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Linder SM, Bischof-Bockbrader A, Davidson S, Li Y, Lapin B, Singh T, Lee J, Bethoux F, Alberts JL. The Utilization of Forced-Rate Cycling to Facilitate Motor Recovery Following Stroke: A Randomized Clinical Trial. Neurorehabil Neural Repair 2024; 38:291-302. [PMID: 38420848 PMCID: PMC11071159 DOI: 10.1177/15459683241233577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
BACKGROUND The potential for aerobic exercise (AE) to enhance neuroplasticity post-stroke has been theorized but not systematically investigated. Our aim was to determine the effects of forced-rate AE (FE) paired with upper extremity (UE) repetitive task practice (FE + RTP) compared to time-matched UE RTP (RTP only) on motor recovery. METHODS A single center randomized clinical trial was conducted from April 2019 to December 2022. Sixty individuals ≥6 months post-stroke with UE hemiparesis were randomized to FE + RTP (N = 30) or RTP only (N = 30), completing 90-minute sessions, 3×/week for 8 weeks. The FE + RTP group underwent 45-minute of FE (5-minute warm-up, 35-minute main set, and 5-minute cool down) followed by 45-minute of UE RTP. The RTP only group completed 90-minute of RTP. Primary outcomes were the Fugl-Meyer Assessment (FMA) and Action Research Arm Test (ARAT). The 6-minute Walk Test (6MWT, secondary outcome) assessed walking capacity. RESULTS Sixty individuals enrolled and 56 completed the study. The RTP only group completed more RTP in terms of repetitions (411.8 ± 44.4 vs 222.8 ± 28.4, P < .001) and time (72.7 ± 6.7 vs 37.8 ± 2.4 minutes, P < .001) versus FE + RTP. There was no significant difference between groups on the FMA (FE + RTP, 36.2 ± 10.1-44.0 ± 11.8 and RTP only, 34.4 ± 11.0-41.2 ± 13.4, P = .43) or ARAT (FE + RTP, 32.5 ± 16.6-37.7 ± 17.9 and RTP only, 32.8 ± 18.6-36.4 ± 18.5, P = .88). The FE + RTP group demonstrated greater improvements on the 6MWT (274.9 ± 122.0-327.1 ± 141.2 m) versus RTP only (285.5 ± 160.3-316.9 ± 170.0, P = .003). CONCLUSIONS There was no significant difference between groups in the primary outcomes. The FE + RTP improved more on the 6MWT, a secondary outcome. TRIAL REGISTRATION ClinicalTrials.gov: NCT03819764.
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Affiliation(s)
- Susan M. Linder
- Department of Physical Medicine and Rehabilitation, Cleveland Clinic, Cleveland, OH, USA
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | | | - Sara Davidson
- Concussion Center, Neurologic Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Yadi Li
- Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- Center for Outcomes Research and Evaluation, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Brittany Lapin
- Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- Center for Outcomes Research and Evaluation, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Tamanna Singh
- Department of Cardiovascular Medicine; Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA
| | - John Lee
- Department of Physical Medicine and Rehabilitation, Cleveland Clinic, Cleveland, OH, USA
| | - Francois Bethoux
- Department of Physical Medicine and Rehabilitation, Cleveland Clinic, Cleveland, OH, USA
| | - Jay L. Alberts
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- Concussion Center, Neurologic Institute, Cleveland Clinic, Cleveland, OH, USA
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Lotfi A, Abbasi M, Karami N, Arghavanfar H, Kazeminasab F, Rosenkranz SK. Effects of treadmill training on myelin proteomic markers and cerebellum morphology in a rat model of cuprizone-induced toxic demyelination. J Neuroimmunol 2024; 387:578286. [PMID: 38215583 DOI: 10.1016/j.jneuroim.2024.578286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/14/2024]
Abstract
BACKGROUND Multiple sclerosis (MS) is the most common demyelinating disease of the central nervous system (CNS). If demyelination is persistent, it will result in irreversible axonal injury and loss. The purpose of the current study was to investigate the effects of treadmill training on myelin proteomic markers and cerebellum morphology in a rat model of cuprizone-induced toxic demyelination. METHODS Thirty male rats were randomly assigned to five groups (n = 6 per group), consisting of a healthy control group (Control), a cuprizone (CPZ) group, and three exercise training groups: exercise training before and during the CPZ administration (EX-CPZ-EX), exercise training before the CPZ administration (EX-CPZ), and exercise training during the CPZ administration (CPZ-EX). A rat model of CPZ-induced toxic demyelination consisted of feeding the rats cuprizone pellets (0.2%) for 6 weeks. All exercise groups performed a treadmill training protocol 5 days/week for 6 weeks. Levels of Myelin proteolipid protein (PLP), Myelin oligodendrocyte glycoprotein (MOG), axonal injury in the cerebellar tissue, and volume, weight, and length of the cerebellum were determined. RESULTS Results indicated a significant decrease in PLP and MOG in the CPZ groups compared to the Control group (****p < 0.0001). There was a significant increase in PLP and MOG and a significant decrease in axonal injury in the EX-CPZ-EX group as compared to other CPZ groups (****p < 0.0001), and CPZ-MS and CPZ-EX were not significantly different from one another. However, there were no significant differences between the groups for the volume, weight, or length of the cerebellum. CONCLUSION Treadmill training improved myelin sheath structural proteins and axonal injury in cerebellar tissue in a rat model of CPZ-induced toxic demyelination.
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Affiliation(s)
- Alireza Lotfi
- Department of Exercise Physiology, Ilam Branch, Islamic Azad University, Ilam, Iran
| | - Maryam Abbasi
- Department of Exercise Physiology, Ilam Branch, Islamic Azad University, Ilam, Iran.
| | - Nasrin Karami
- Department of Exercise Physiology, Ilam Branch, Islamic Azad University, Ilam, Iran
| | - Hadis Arghavanfar
- Department of Exercise Physiology, Ilam Branch, Islamic Azad University, Ilam, Iran
| | - Fatemeh Kazeminasab
- Department of Physical Education and Sport Sciences, Faculty of Humanities, University of Kashan, Kashan, Iran
| | - Sara K Rosenkranz
- Department of Kinesiology and Nutrition Sciences, School of Integrated Health Sciences, University of Nevada Las Vegas, Las Vegas, NV, USA
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Xu L, Liu R, Qin Y, Wang T. Brain metabolism in Alzheimer's disease: biological mechanisms of exercise. Transl Neurodegener 2023; 12:33. [PMID: 37365651 DOI: 10.1186/s40035-023-00364-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 05/31/2023] [Indexed: 06/28/2023] Open
Abstract
Alzheimer's disease (AD) is a major subtype of neurodegenerative dementia caused by long-term interactions and accumulation of multiple adverse factors, accompanied by dysregulation of numerous intracellular signaling and molecular pathways in the brain. At the cellular and molecular levels, the neuronal cellular milieu of the AD brain exhibits metabolic abnormalities, compromised bioenergetics, impaired lipid metabolism, and reduced overall metabolic capacity, which lead to abnormal neural network activity and impaired neuroplasticity, thus accelerating the formation of extracellular senile plaques and intracellular neurofibrillary tangles. The current absence of effective pharmacological therapies for AD points to the urgent need to investigate the benefits of non-pharmacological approaches such as physical exercise. Despite the evidence that regular physical activity can improve metabolic dysfunction in the AD state, inhibit different pathophysiological molecular pathways associated with AD, influence the pathological process of AD, and exert a protective effect, there is no clear consensus on the specific biological and molecular mechanisms underlying the advantages of physical exercise. Here, we review how physical exercise improves crucial molecular pathways and biological processes associated with metabolic disorders in AD, including glucose metabolism, lipid metabolism, Aβ metabolism and transport, iron metabolism and tau pathology. How metabolic states influence brain health is also presented. A better knowledge on the neurophysiological mechanisms by which exercise improves AD metabolism can contribute to the development of novel drugs and improvement of non-pharmacological interventions.
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Affiliation(s)
- Longfei Xu
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, China
- Tianjin Key Laboratory of Exercise Physiology & Sports Medicine, Tianjin University of Sport, Tianjin, 301617, China
| | - Ran Liu
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, China
- Tianjin Key Laboratory of Exercise Physiology & Sports Medicine, Tianjin University of Sport, Tianjin, 301617, China
| | - Yingkai Qin
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, China.
| | - Tianhui Wang
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, China.
- Tianjin Key Laboratory of Exercise Physiology & Sports Medicine, Tianjin University of Sport, Tianjin, 301617, China.
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Kopczynski A, Carteri RB, Rodolphi MS, Oses JP, Portela LO, Geller CA, de Oliveira VG, De Bastiani MA, Strogulski NR, Smith DH, Portela LV. Lower and higher volumes of physical exercise build up brain reserves against memory deficits triggered by a head injury in mice. Exp Neurol 2023; 363:114352. [PMID: 36813223 PMCID: PMC10103909 DOI: 10.1016/j.expneurol.2023.114352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 02/13/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023]
Abstract
Decreasing neurotrophic support and impaired mitochondrial bioenergetics are key mechanisms for long-term neurodegeneration and cognitive decline after traumatic brain injury (TBI). We hypothesize that preconditioning with lower and higher volumes of physical exercise upregulates the CREB-BDNF axis and bioenergetic capability, which might serve as neural reserves against cognitive impairment after severe TBI. Using a running wheel mounted in the home cage, mice were engaged in lower (LV, 48 h free access, and 48 h locked) and higher (HV, daily free access) exercise volumes for thirty days. Subsequently, LV and HV mice remained for additional thirty days in the home cage with the running wheel locked and were euthanized. The sedentary group had the running wheel always locked. For the same type of exercise stimulus in a given time, daily workout presents higher volume than alternate days workout. The total distance ran in the wheel was the reference parameter to confirm distinct exercise volumes. On average, LV exercise ran 27.522 m and HV exercise ran 52.076 m. Primarily, we investigate whether LV and HV protocols increase neurotrophic and bioenergetic support in the hippocampus thirty days after exercise ceased. Regardless of volume, exercise increased hippocampal pCREBSer133-CREB-proBDNF-BDNF signaling and mitochondrial coupling efficiency, excess capacity, and leak control, that may compose the neurobiological basis for neural reserves. Further, we challenge these neural reserves against secondary memory deficits triggered by a severe TBI. After thirty days of exercise LV and HV, and sedentary (SED) mice were submitted to the CCI model. Mice remained for additional thirty days in the home cage with the running wheel locked. The mortality after severe TBI was approximately 20% in LV and HV, while in the SED was 40%. Also, LV and HV exercise sustained hippocampal pCREBSer133-CREB-proBDNF-BDNF signaling, mitochondrial coupling efficiency, excess capacity, and leak control for thirty days after severe TBI. Corroborating these benefits, the mitochondrial H2O2 production linked to complexes I and II was attenuated by exercise regardless of the volume. These adaptations attenuated spatial learning and memory deficits caused by TBI. In summary, preconditioning with LV and HV exercise builds up long-lasting CREB-BDNF and bioenergetic neural reserves that preserve memory fitness after severe TBI.
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Affiliation(s)
- Afonso Kopczynski
- Laboratório de Neurotrauma e Biomarcadores, Departamento de Bioquímica, Programa de Pós-Graduação em Bioquímica, ICBS, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil
| | - Randhall B Carteri
- Laboratório de Neurotrauma e Biomarcadores, Departamento de Bioquímica, Programa de Pós-Graduação em Bioquímica, ICBS, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil; Centro Universitário Metodista, Departamento de Nutrição, Instituto Porto Alegre, IPA, Porto Alegre, Brazil; CESUCA Centro Universitário, Departamento de Nutrição, Cachoeirinha, RS, Brazil
| | - Marcelo S Rodolphi
- Laboratório de Neurotrauma e Biomarcadores, Departamento de Bioquímica, Programa de Pós-Graduação em Bioquímica, ICBS, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil
| | - Jean P Oses
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Luiz O Portela
- Laboratório de Performance em Ambiente Simulado (LAPAS), Centro de Educação Física, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brazil
| | - Cesar A Geller
- Laboratório de Performance em Ambiente Simulado (LAPAS), Centro de Educação Física, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brazil
| | - Vitória G de Oliveira
- Laboratório de Neurotrauma e Biomarcadores, Departamento de Bioquímica, Programa de Pós-Graduação em Bioquímica, ICBS, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil
| | - Marco Antonio De Bastiani
- Zimmer Neuroimaging Lab, Departamento de Bioquímica, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Nathan R Strogulski
- Laboratório de Neurotrauma e Biomarcadores, Departamento de Bioquímica, Programa de Pós-Graduação em Bioquímica, ICBS, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil; School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.
| | - Douglas H Smith
- Penn Center for Brain Injury and Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| | - Luis V Portela
- Laboratório de Neurotrauma e Biomarcadores, Departamento de Bioquímica, Programa de Pós-Graduação em Bioquímica, ICBS, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil.
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Parnow A, Hafedh M, Tsunoda I, Patel DI, Baker JS, Saeidi A, Bagchi S, Sengupta P, Dutta S, Łuszczki E, Stolarczyk A, Oleksy Ł, Al Kiyumi MH, Laher I, Zouhal H. Effectiveness of exercise interventions in animal models of multiple sclerosis. Front Med (Lausanne) 2023; 10:1143766. [PMID: 37089595 PMCID: PMC10116993 DOI: 10.3389/fmed.2023.1143766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 03/03/2023] [Indexed: 04/03/2023] Open
Abstract
Multiple sclerosis (MS) is associated with an impaired immune system that severely affects the spinal cord and brain, and which is marked by progressive inflammatory demyelination. Patients with MS may benefit from exercise training as a suggested course of treatment. The most commonly used animal models of studies on MS are experimental autoimmune/allergic encephalomyelitis (EAE) models. The present review intends to concisely discuss the interventions using EAE models to understand the effectiveness of exercise as treatment for MS patients and thereby provide clear perspective for future research and MS management. For the present literature review, relevant published articles on EAE animal models that reported the impacts of exercise on MS, were extracted from various databases. Existing literature support the concept that an exercise regimen can reduce the severity of some of the clinical manifestations of EAE, including neurological signs, motor function, pain, and cognitive deficits. Further results demonstrate the mechanisms of EAE suppression with information relating to the immune system, demyelination, regeneration, and exercise in EAE. The role for neurotrophic factors has also been investigated. Analyzing the existing reports, this literature review infers that EAE is a suitable animal model that can help researchers develop further understanding and treatments for MS. Besides, findings from previous animal studies supports the contention that exercise assists in ameliorating MS progression.
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Affiliation(s)
- Abdolhossein Parnow
- Department of Sport Biological Sciences, Physical Education and Sports Sciences Faculty, Razi University, Kermanshah, Iran
- *Correspondence: Abdolhossein Parnow,
| | - Muthanna Hafedh
- Department of Exercise Physiology, General Directorate of Education Basrah, Basrah, Iraq
- Department of Sports Activities, College of Adm&Eco/Qurna, University of Basrah, Basrah, Iraq
| | - Ikuo Tsunoda
- Department of Microbiology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Darpan I. Patel
- School of Nursing, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Julien S. Baker
- Department of Sport, Physical Education and Health, Centre for Health and Exercise Science Research, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
| | - Ayoub Saeidi
- Department of Physical Education and Sport Sciences, Faculty of Humanities and Social Sciences, University of Kurdistan, Sanandaj, Iran
| | - Sovan Bagchi
- Department of Biomedical Sciences, Gulf Medical University, Ajman, United Arab Emirates
- Sovan Bagchi,
| | - Pallav Sengupta
- Department of Biomedical Sciences, Gulf Medical University, Ajman, United Arab Emirates
| | - Sulagna Dutta
- School of Medical Sciences, Bharath Institute of Higher Education and Research (BIHER), Chennai, India
| | - Edyta Łuszczki
- Institute of Health Sciences, Medical College of Rzeszów University, Rzeszów, Poland
| | - Artur Stolarczyk
- Department of Orthopedics and Rehabilitation, Medical University of Warsaw, Warsaw, Poland
| | - Łukasz Oleksy
- Department of Physiotherapy, Faculty of Health Sciences, Jagiellonian University Medical College, Kraków, Poland
| | - Maisa Hamed Al Kiyumi
- Department of Family Medicine and Public Health, Sultan Qaboos University Hospital, Sultan Qaboos University, Muscat, Oman
| | - Ismail Laher
- Department of Anesthesiology, Pharmacology and Therapeutics, The University of British Columbia, Vancouver, BC, Canada
| | - Hassane Zouhal
- University of Rennes, M2S (Laboratoire Mouvement, Sport, Santé) - EA 1274, Rennes, France
- Institute International des Sciences du Sport (2I2S), Irodouër, France
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7
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Exercise training improves memory and produces changes in the adrenal gland morphology in the experimental autoimmune encephalomyelitis. Endocr Regul 2022; 56:31-37. [PMID: 35180820 DOI: 10.2478/enr-2022-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Objective. The present study sought to verify the effects of an exercise training on the memory along with the morphological assessment of the adrenal gland tissue in the rats with experimental autoimmune encephalomyelitis (EAE). Methods. Female Lewis rats were randomly divided into three groups: EAE group, EAE group with exercise (EAE+Ex), and control group (CO). Each group contained 10 rats. To evaluate the memory, all rats were subjected to the Morris water maze learning test for four consecutive days and one day for a prop test. EAE was induced by guinea pig spinal cord homogenate emulsified in incomplete Freund's adjuvant and heat-mycobacterium. The exercise training on a motorized treadmill was initiated 3 weeks before EAE induction and disconnected 2 weeks post-induction. Results. We found that exercise training for five weeks produced an improved swimming velocity related to memory improvement in EAE+Ex group in comparison with EAE group, but not an incurable adrenal gland tissue after EAE induction. Conclusions. The experimental design selected for this study appears to be an effective treatment for memory in rats with experimental autoimmune encephalomyelitis.
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Hafez S, Eid Z, Alabasi S, Darwiche Y, Channaoui S, Hess DC. Mechanisms of Preconditioning Exercise-Induced Neurovascular Protection in Stroke. J Stroke 2021; 23:312-326. [PMID: 34649377 PMCID: PMC8521252 DOI: 10.5853/jos.2020.03006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/13/2021] [Indexed: 12/27/2022] Open
Abstract
Ischemic stroke is a leading cause of death and disability. Tissue plasminogen activator is the only U.S. Food and Drug Administration approved thrombolytic therapy for ischemic stroke patients till date. However, its use is limited due to increased risk of bleeding and narrow therapeutic window. Most of the preclinically tested pharmacological agents failed to be translated to the clinic. This drives the need for alternative therapeutic approaches that not only provide enhanced neuroprotection, but also reduce the risk of stroke. Physical exercise is a sort of preconditioning that provides the body with brief ischemic episodes that can protect the body from subsequent severe ischemic attacks like stroke. Physical exercise is known to improve cardiovascular health. However, its role in providing neuroprotection in stroke is not clear. Clinical observational studies showed a correlation between regular physical exercise and reduced risk and severity of ischemic stroke and better outcomes after stroke. However, the underlying mechanisms through which prestroke exercise can reduce the stroke injury and improve the outcomes are not completely understood. The purpose of this review is to: demonstrate the impact of exercise on stroke outcomes and show the potential role of exercise in stroke prevention and recovery; uncover the underlying mechanisms through which exercise reduces the neurovascular injury and improves stroke outcomes aiming to develop novel therapeutic approaches.
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Affiliation(s)
- Sherif Hafez
- Department of Pharmaceutical Sciences, College of Pharmacy Mercer University, Atlanta, GA, USA.,Neurology Department, Augusta University, Augusta, GA, USA
| | - Zeina Eid
- College of Pharmacy Larkin University, Miami, FL, USA
| | - Sara Alabasi
- College of Pharmacy Larkin University, Miami, FL, USA
| | | | | | - David C Hess
- Neurology Department, Augusta University, Augusta, GA, USA
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9
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Zhao N, Xu B. The beneficial effect of exercise against Alzheimer's disease may result from improved brain glucose metabolism. Neurosci Lett 2021; 763:136182. [PMID: 34418507 DOI: 10.1016/j.neulet.2021.136182] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 08/14/2021] [Accepted: 08/16/2021] [Indexed: 02/07/2023]
Abstract
The potential of physical exercise as an intervention for Alzheimer's disease (AD) has been extensively reported. In fact, a number of studies have highlighted improvements in β-amyloid (Aβ) peptide and hyperphosphorylated tau (p-tau) as critical mechanisms in exercise-induced beneficial neurological outcomes. However, no therapeutic management have been proven to be effective in humans. Recent evidence has shown that AD may be a metabolic disease related to glucose metabolic dysfunction in the brain. In this regard, some of the mechanisms responsible for the beneficial effects of physical exercise in the pathology of AD appear to be related to alterations in glucose metabolism. Therefore, we propose that the neuroprotective effect of physical exercise against AD through synergetic improvement in brain glucose metabolism and its pathophysiology. The novel perspective presented here partly explains the failure of Aβ/tau-based therapeutic approaches and provides evidence for brain glucose metabolism as a potential therapeutic target in AD.
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Affiliation(s)
- Na Zhao
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai, China; College of Physical Education and Health, East China Normal University, Shanghai, China
| | - Bo Xu
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai, China; College of Physical Education and Health, East China Normal University, Shanghai, China.
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10
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Geng X, Wang Q, Lee H, Huber C, Wills M, Elkin K, Li F, Ji X, Ding Y. Remote Ischemic Postconditioning vs. Physical Exercise After Stroke: an Alternative Rehabilitation Strategy? Mol Neurobiol 2021; 58:3141-3157. [PMID: 33625674 PMCID: PMC8257517 DOI: 10.1007/s12035-021-02329-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 02/10/2021] [Indexed: 12/19/2022]
Abstract
There remain debates on neuroprotection and rehabilitation techniques for acute ischemic stroke patients. Therapeutic physical exercise following stroke has shown promise but is challenging to apply clinically. Ischemic conditioning, which has several clinical advantages, is a potential neuroprotective method for stroke rehabilitation that is less understood. In the present study, the rehabilitative properties and mechanisms of physical exercise and remote ischemic postconditioning (RIPostC) after stroke were compared and determined. A total of 248 adult male Sprague-Dawley rats were divided into five groups: (1) sham, (2) stroke, (3) stroke with intense treadmill exercise, (4) stroke with mild treadmill exercise, and (5) stroke with RIPostC. Focal ischemia was evaluated by infarct volume and neurological deficit. Long-term functional outcomes were represented through neurobehavioral function tests: adhesive removal, beam balance, forelimb placing, grid walk, rota-rod, and Morris water maze. To further understand the mechanisms underlying neurorehabilitation and verify the presence thereof, we measured mRNA and protein levels of neuroplasticity factors, synaptic proteins, angiogenesis factors, and regulation molecules, including HIF-1α, BDNF, TrkB, and CREB. The key role of HIF-1α was elucidated by using the inhibitor, YC-1. Both exercise intensities and RIPostC significantly decreased infarct volumes and neurological deficits and outperformed the stroke group in the neurobehavioral function tests. All treatment groups showed significant increases in mRNA and protein expression levels of the target molecules for neurogenesis, synaptogenesis, and angiogenesis, with intermittent further increases in the RIPostC group. HIF-1α inhibition nullified most beneficial effects and indicative molecule expressions, including HIF-1α, BDNF, TrkB, and CREB, in both procedures. RIPostC is equally, or superiorly, effective in inducing neuroprotection and rehabilitation compared to exercise in ischemic rats. HIF-1α likely plays an important role in the efficacy of neuroplasticity conditioning, possibly through HIF-1α/BDNF/TrkB/CREB regulation.
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Affiliation(s)
- Xiaokun Geng
- Department of Neurology and China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, 101149, China
- China-America Institute of Neuroscience, Luhe Hospital, Capital Medical University, Beijing, China
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Qingzhu Wang
- China-America Institute of Neuroscience, Luhe Hospital, Capital Medical University, Beijing, China
| | - Hangil Lee
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Christian Huber
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Melissa Wills
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Kenneth Elkin
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Fengwu Li
- China-America Institute of Neuroscience, Luhe Hospital, Capital Medical University, Beijing, China
| | - Xunming Ji
- Department of Neurology and China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, 101149, China.
| | - Yuchuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
- Department of Research & Development Center, John D. Dingell VA Medical Center, Detroit, MI, USA
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11
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Soudmand P, Tofighi A, Tolouei Azar J, Razi M, Ghaderi Pakdel F. Different continuous exercise training intensities induced effect on sertoli-germ cells metabolic interaction; implication on GLUT-1, GLUT-3 and MCT-4 transporting proteins expression level. Gene 2021; 783:145553. [PMID: 33711407 DOI: 10.1016/j.gene.2021.145553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 02/12/2021] [Accepted: 02/23/2021] [Indexed: 12/31/2022]
Abstract
Despite other tissues, the effect of different exercise training protocols (ETPs) on the expression levels of metabolic substrates transmembrane transporters in the testicular tissue, remains completely unexplored. Thus, the effects of low, moderate and high-intensity ETPs on the SCs and germ cells potentials in GLUT-1, GLUT-3 and MCT-4 expression levels was investigated in this study. The animals were assigned into 4 groups, including sedentary control, low-intensity continuous (LICT), moderate-intensity (MICT) and high-intensity (HICT) ETPs-induced groups (n = 6/group). The GLUT-1, GLUT-3 and MCT-4 expressions, cytoplasmic carbohydrate storages of SCs and germ cells, the SCs survival and the spermatogenesis and spermiogenesis rates were assessed. The LICT and MICT did not significantly alter the protein expression levels of GLUT-3 and MCT-4 in the SCs and germ cells, while decreased the GLUT-1 protein content versus the sedentary control animals. In contrast, the HICT remarkably suppressed the GLUT-1 and MCT-4 in both SCs, and germ cells and diminished GLUT-3 in SCs and increased in the germ cells. No significant changes were revealed in the cytoplasmic carbohydrate storage in the LICT and MICT groups, while significantly diminished in the HICT group. The HICT group showed a failed spermatogenesis and spermiogenesis, which were not demonstrated in the sedentary control, LICT and MICT groups. In conclusion, the HICT, by reducing the GLUT-1, GLUT-3 and MCT-4 protein contents in the SCs and reducing the SCs survival, can suppress the glucose transmembrane transport and inhibit the lactate export from SCs, which in turn, ends with failed spermatogenesis and spermiogenesis.
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Affiliation(s)
- Poupak Soudmand
- Department of Exercise Physiology and Corrective Exercises, Faculty of Sport Sciences, Urmia University, Urmia, Iran
| | - Asghar Tofighi
- Department of Exercise Physiology and Corrective Exercises, Faculty of Sport Sciences, Urmia University, Urmia, Iran.
| | - Javad Tolouei Azar
- Department of Exercise Physiology and Corrective Exercises, Faculty of Sport Sciences, Urmia University, Urmia, Iran
| | - Mazdak Razi
- Department of Basic Sciences, Faculty of Veterinary Medicine, P.O.BOX: 1177, Urmia University, Urmia, Iran
| | - Firouz Ghaderi Pakdel
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
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12
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Pang R, Wang X, Pei F, Zhang W, Shen J, Gao X, Chang C. Regular Exercise Enhances Cognitive Function and Intracephalic GLUT Expression in Alzheimer's Disease Model Mice. J Alzheimers Dis 2020; 72:83-96. [PMID: 31561359 DOI: 10.3233/jad-190328] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Brain energy metabolic impairment is one of the main features of Alzheimer's disease (AD) and is considered an underlying factor involved in cognitive impairment. Therefore, brain energy metabolism may represent a new therapeutic target for AD medical interventions. Among nutrients providing energy, glucose, the primary energy source, cannot cross the blood-brain barrier freely without specific glucose transporters (GLUTs), which are essential for the maintenance of cerebral energy metabolism homeostasis. Several converging lines of evidence suggest that GLUT1 deficiency in mice leads to synapse reduction and dysregulation coupled with mitochondrial morphological changes. In this study, the results revealed that regular exercise (RE) decreased the expression of amyloid-β and phosphorylated tau by western blot, and enhanced the spatial learning and exploration ability of AD model mice as assessed by Morris water maze test. Mitochondrial cristae and edges were clear and intact, ATP production in the brain raised, the number of synapses increased, and GLUT1 and GLUT3 expression levels improved in the central nervous system (CNS) in AD model mice after RE. Changes in GLUT1 and GLUT3 expression at the protein level after RE are an important part of energy metabolic adaptation in AD model mice. Learning and memory improvement are highly associated with mitochondrial integrity and sufficient synapses in the CNS. This research suggests that increased brain energy metabolism attributed to RE exhibits promising therapeutic potential for AD.
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Affiliation(s)
- Ruiqi Pang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Xiaofan Wang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Feifei Pei
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Weizhe Zhang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Jiaming Shen
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Xiaoqun Gao
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China.,Center of Cerebral Palsy Surgical Research and Treatment, Zhengzhou University, Zhengzhou, China.,Population and Family Planning Science and Technology Research Institute of Henan, Zhengzhou, China
| | - Cheng Chang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China.,Center of Cerebral Palsy Surgical Research and Treatment, Zhengzhou University, Zhengzhou, China.,Population and Family Planning Science and Technology Research Institute of Henan, Zhengzhou, China
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13
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Aerobic exercise increases sprouting angiogenesis in the male rat motor cortex. Brain Struct Funct 2020; 225:2301-2314. [PMID: 32918614 DOI: 10.1007/s00429-020-02100-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 06/10/2020] [Indexed: 12/14/2022]
Abstract
Exercise is beneficial to brain health, and historically, the advantageous effects of exercise on the brain have been attributed to neuronal plasticity. However, it has also become clear that the brain vascular system also exhibits plasticity in response to exercise. This plasticity occurs in areas involved in movement, such as the motor cortex. This experiment aimed to further characterize the effects of exercise on structural vascular plasticity in the male rat motor cortex, by specifically identifying whether features of angiogenesis, the growth of new capillaries, or changes in vessel diameter were present. Male rats in the exercise group engaged in a 5-week bout of voluntary wheel running, while a second group of rats remained sedentary. After the exercise regimen, vascular corrosion casts, resin replicas of the brain vasculature, were made for all animals and imaged using a scanning electron microscope. Results indicate sprouting angiogenesis was the primary form of structural vascular plasticity detected in the motor cortex under these aerobic exercise parameters. Additionally, exercised rats displayed a slight increase in capillary diameter and expanded endothelial cell nuclei diameters in this region.
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14
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Chen CC, Chang CP. Development of a three-channel automatic climbing training system for rat rehabilitation after ischemic stroke. ACTA ACUST UNITED AC 2020; 53:e8943. [PMID: 32555931 PMCID: PMC7296713 DOI: 10.1590/1414-431x20208943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 04/16/2020] [Indexed: 01/21/2023]
Abstract
This paper reports the development of a three-channel automatic speed-matching climbing training system that could train three rats at the same time for rehabilitation after an ischemic stroke. An infrared (IR) remote sensor was installed at the end of each channel to monitor the real-time position of a climbing rat. This research was carried out in five stages: i) system design; ii) hardware circuit; iii) running speed control; iv) functional testing; and v) verification using an animal model of cerebral stroke. The rehabilitated group significantly outperformed the middle cerebral artery occlusion (MCAo) sedentary group in the rota-rod and inclined plate tests 21 days after a stroke. The rehabilitated group also had a cerebral infarction volume of 28.34±19.4%, far below 56.81±18.12% of the MCAo group 28 days after the stroke, validating the effectiveness of this training platform for stroke rehabilitation. The running speed of the climbing rehabilitation training platform was designed to adapt to the physical conditions of subjects, and overtraining injuries can be completely prevented accordingly.
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Affiliation(s)
- Chi-Chun Chen
- Department of Electronic Engineering, National Chin-Yi University of Technology, Taichung, Taiwan
| | - Ching-Ping Chang
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan
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15
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Quan H, Koltai E, Suzuki K, Aguiar AS, Pinho R, Boldogh I, Berkes I, Radak Z. Exercise, redox system and neurodegenerative diseases. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165778. [PMID: 32222542 DOI: 10.1016/j.bbadis.2020.165778] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 03/20/2020] [Accepted: 03/22/2020] [Indexed: 12/12/2022]
Abstract
Regular exercise induces a wide range of redox system-associated molecular adaptive responses to the nervous system. The intermittent induction of reactive oxygen species (ROS) during acute exercise sessions and the related upregulation of antioxidant/repair and housekeeping systems are associated with improved physiological function. Exercise-induced proliferation and differentiation of neuronal stem cells are ROS dependent processes. The increased production of brain derived neurotrophic factor (BDNF) and the regulation by regular exercise are dependent upon redox sensitive pathways. ROS are causative and associative factors of neurodegenerative diseases and regular exercise provides significant neuroprotective effects against Alzheimer's disease, Parkinson's disease, and hypoxia/reperfusion related disorders. Regular exercise regulates redox homeostasis in the brain with complex multi-level molecular pathways.
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Affiliation(s)
- Helong Quan
- Exercise and Metabolism Research Center, Zhejiang Normal University, Jinhua City, Zhejiang, China
| | - Erika Koltai
- Research Institute of Sport Science, University of Physical Education, Budapest, Hungary
| | - Katsuhiko Suzuki
- Faculty of Sport Sciences, Waseda University, Saitama 359-1192, Japan
| | - Aderbal S Aguiar
- Research Group on Biology of Exercise, Department of Health Sciences, Federal University of Santa Catarina, Santa Catarina, Brazil
| | - Ricardo Pinho
- Laboratory of Exercise Biochemistry in Health, Graduate Program in Health Sciences, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
| | - Istvan Boldogh
- Department of Microbiology and Immunology, University of Texas Medical Branch at Galveston, Galveston, TX 77555, USA
| | - Istvan Berkes
- Research Institute of Sport Science, University of Physical Education, Budapest, Hungary
| | - Zsolt Radak
- Research Institute of Sport Science, University of Physical Education, Budapest, Hungary; Faculty of Sport Sciences, Waseda University, Saitama 359-1192, Japan.
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16
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Rafie F, Sheibani V, Shahbazi M, Naghdi N, Pourranjbar M, Sheikh M. The effects of voluntary exercise on learning and memory deficit in Parkinson’s disease model of rats. SPORT SCIENCES FOR HEALTH 2019. [DOI: 10.1007/s11332-019-00531-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Lundquist AJ, Parizher J, Petzinger GM, Jakowec MW. Exercise induces region-specific remodeling of astrocyte morphology and reactive astrocyte gene expression patterns in male mice. J Neurosci Res 2019; 97:1081-1094. [PMID: 31175682 DOI: 10.1002/jnr.24430] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/29/2019] [Accepted: 04/03/2019] [Indexed: 01/13/2023]
Abstract
Astrocytes are essential mediators of many aspects of synaptic transmission and neuroplasticity. Exercise has been demonstrated to induce neuroplasticity and synaptic remodeling, such as through mediating neurorehabilitation in animal models of neurodegeneration. However, the effects of exercise on astrocytic function, and how such changes may be relevant to neuroplasticity remain unclear. Here, we show that exercise remodels astrocytes in an exercise- and region-dependent manner as measured by GFAP and SOX9 immunohistochemistry and morphological analysis in male mice. Additionally, qRT-PCR analysis of reactive astrocyte gene expression showed an exercise-induced elevation in brain regions known to be activated by exercise. Taken together, these data demonstrate that exercise actively modifies astrocyte morphology and drives changes in astrocyte gene expression and suggest that astrocytes may be a central component to exercise-induced neuroplasticity and neurorehabilitation.
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Affiliation(s)
- Adam J Lundquist
- Department of Neurology, University of Southern California, Los Angeles, California
| | - Jacqueline Parizher
- Department of Neurology, University of Southern California, Los Angeles, California
| | - Giselle M Petzinger
- Department of Neurology, University of Southern California, Los Angeles, California.,Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, California
| | - Michael W Jakowec
- Department of Neurology, University of Southern California, Los Angeles, California.,Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, California
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18
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Tong Y, Cheng Z, Rajah GB, Duan H, Cai L, Zhang N, Du H, Geng X, Ding Y. High Intensity Physical Rehabilitation Later Than 24 h Post Stroke Is Beneficial in Patients: A Pilot Randomized Controlled Trial (RCT) Study in Mild to Moderate Ischemic Stroke. Front Neurol 2019; 10:113. [PMID: 30837938 PMCID: PMC6390474 DOI: 10.3389/fneur.2019.00113] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 01/28/2019] [Indexed: 12/13/2022] Open
Abstract
Objective: Very early mobilization was thought to contribute to beneficial outcomes in stroke-unit care, but the optimal intervention strategy including initiation time and intensity of mobilization are unclear. In this study, we sought to confirm the rehabilitative effects of different initiation times (24 vs. 48 h) with different mobilization intensities (routine or intensive) in ischemic stroke patients within three groups. Materials and Methods: We conducted a randomized and controlled trial with a blinded follow-up assessment. Patients with ischemic stroke, first or recurrent, admitted to stroke unit within 24 h after stroke onset were recruited. Eligible subjects were randomly assigned (1:1:1) to 3 groups: Early Routine Mobilization in which patients received < 1.5 h/d out-of-bed mobilization within 24–48 h after stroke onset, Early Intensive Mobilization in which patients initiated ≥3 h/d mobilization at 24–48 h after the stroke onset, and Very Early Intensive Mobilization in which patients received≥3 h/d mobilization within 24 h. The modified Rankin Scale score of 0–2 was used as the primary favorable outcome. Results: We analyzed 248 of the 300 patients (80 in Early Routine Mobilization, 82 in Very Early Intensive Mobilization and 86 in Early Intensive Mobilization), with 52 dropping out (20 in Early Routine Mobilization, 18 in Very Early Intensive Mobilization and 14 in Early Intensive Mobilization). Among the three groups, the Early Intensive Mobilization group had the most favorable outcomes at 3-month follow-up, followed by patients in the Early Routine Mobilization group. Patients in Very Early Intensive Mobilization received the least odds of favorable outcomes. At 3 month follow up, 53.5%, (n = 46) of patients with Early Intensive Mobilization showed a favorable outcome (modified Rankin Scale 0–2) (p = 0.041) as compared to 37.8% (n = 31) of patients in the Very Early Intensive Mobilization. Conclusions: Post-stroke rehabilitation with high intensity physical exercise at 48 h may be beneficial. Very Early Intensive Mobilization did not lead to a favorable outcome at 3 months. Clinical Trial Registration:www.chictr.org.cn, identifier ChiCTR-ICR-15005992.
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Affiliation(s)
- Yanna Tong
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China
| | - Zhe Cheng
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China
| | - Gary B Rajah
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Honglian Duan
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China
| | - Lipeng Cai
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China
| | - Nan Zhang
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China
| | - Huishan Du
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China
| | - Xiaokun Geng
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Yuchuan Ding
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
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19
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Steventon JJ, Hansen AB, Whittaker JR, Wildfong KW, Nowak-Flück D, Tymko MM, Murphy K, Ainslie PN. Cerebrovascular Function in the Large Arteries Is Maintained Following Moderate Intensity Exercise. Front Physiol 2018; 9:1657. [PMID: 30519192 PMCID: PMC6258791 DOI: 10.3389/fphys.2018.01657] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 11/02/2018] [Indexed: 01/13/2023] Open
Abstract
Exercise has been shown to induce cerebrovascular adaptations. However, the underlying temporal dynamics are poorly understood, and regional variation in the vascular response to exercise has been observed in the large cerebral arteries. Here, we sought to measure the cerebrovascular effects of a single 20-min session of moderate-intensity exercise in the one hour period immediately following exercise cessation. We employed transcranial Doppler (TCD) ultrasonography to measure cerebral blood flow velocity (CBFV) in the middle cerebral artery (MCAv) and posterior cerebral artery (PCAv) before, during, and following exercise. Additionally, we simultaneously measured cerebral blood flow (CBF) in the internal carotid artery (ICA) and vertebral artery (VA) before and up to one hour following exercise cessation using Duplex ultrasound. A hypercapnia challenge was used before and after exercise to examine exercise-induced changes in cerebrovascular reactivity (CVR). We found that MCAv and PCAv were significantly elevated during exercise (p = 4.81 × 10-5 and 2.40 × 10-4, respectively). A general linear model revealed that these changes were largely explained by the partial pressure of end-tidal CO2 and not a direct vascular effect of exercise. After exercise cessation, there was no effect of exercise on CBFV or CVR in the intracranial or extracranial arteries (all p > 0.05). Taken together, these data confirm that CBF is rapidly and uniformly regulated following exercise cessation in healthy young males.
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Affiliation(s)
- Jessica J Steventon
- Neuroscience and Mental Health Research Institute, School of Medicine, Cardiff University, Cardiff, United Kingdom.,Cardiff University Brain Research Imaging Centre, School of Physics and Astronomy, Cardiff University, Cardiff, United Kingdom
| | - Alex B Hansen
- Centre for Heart Lung and Vascular Health, School of Health and Exercise Science, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Joseph R Whittaker
- Cardiff University Brain Research Imaging Centre, School of Physics and Astronomy, Cardiff University, Cardiff, United Kingdom
| | - Kevin W Wildfong
- Centre for Heart Lung and Vascular Health, School of Health and Exercise Science, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Daniela Nowak-Flück
- Centre for Heart Lung and Vascular Health, School of Health and Exercise Science, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Michael M Tymko
- Centre for Heart Lung and Vascular Health, School of Health and Exercise Science, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Kevin Murphy
- Cardiff University Brain Research Imaging Centre, School of Physics and Astronomy, Cardiff University, Cardiff, United Kingdom
| | - Phil N Ainslie
- Centre for Heart Lung and Vascular Health, School of Health and Exercise Science, University of British Columbia Okanagan, Kelowna, BC, Canada
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20
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Abstract
PURPOSE OF REVIEW Physical activity is increasingly recommended for chronic pain. In this review, we briefly survey recent, high-quality meta-analyses on the effects of exercise in human chronic pain populations, followed by a critical discussion of the rodent literature. RECENT FINDINGS Most meta-analytical studies on the effects of exercise in human chronic pain populations describe moderate improvements in various types of chronic pain, despite substantial variability in the outcomes reported in the primary literature. The most consistent findings suggest that while greater adherence to exercise programs produces better outcomes, there is minimal support for the superiority of one type of exercise over another. The rodent literature similarly suggests that while regular exercise reduces hypersensitivity in rodent models of chronic pain, exercise benefits do not appear to relate to either the type of injury or any particular facet of the exercise paradigm. Potential factors underlying these results are discussed, including the putative involvement of stress-induced analgesic effects associated with certain types of exercise paradigms. Exercise research using rodent models of chronic pain would benefit from increased attention to the role of stress in exercise-induced analgesia, as well as the incorporation of more clinically relevant exercise paradigms.
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Affiliation(s)
- Mark Henry Pitcher
- Pain and Integrative Neuroscience Laboratory, National Center for Complementary and Integrative Health, National Institutes of Health, Room 1E-420, 35A Convent Drive, Bethesda, MD, 20892, USA.
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21
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Treadmill Exercise Ameliorates Spatial Learning and Memory Deficits Through Improving the Clearance of Peripheral and Central Amyloid-Beta Levels. Neurochem Res 2018; 43:1561-1574. [DOI: 10.1007/s11064-018-2571-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 06/02/2018] [Accepted: 06/06/2018] [Indexed: 12/30/2022]
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22
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Davies JMS, Cillard J, Friguet B, Cadenas E, Cadet J, Cayce R, Fishmann A, Liao D, Bulteau AL, Derbré F, Rébillard A, Burstein S, Hirsch E, Kloner RA, Jakowec M, Petzinger G, Sauce D, Sennlaub F, Limon I, Ursini F, Maiorino M, Economides C, Pike CJ, Cohen P, Salvayre AN, Halliday MR, Lundquist AJ, Jakowec NA, Mechta-Grigoriou F, Mericskay M, Mariani J, Li Z, Huang D, Grant E, Forman HJ, Finch CE, Sun PY, Pomatto LCD, Agbulut O, Warburton D, Neri C, Rouis M, Cillard P, Capeau J, Rosenbaum J, Davies KJA. The Oxygen Paradox, the French Paradox, and age-related diseases. GeroScience 2017; 39:499-550. [PMID: 29270905 PMCID: PMC5745211 DOI: 10.1007/s11357-017-0002-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 11/09/2017] [Indexed: 02/06/2023] Open
Abstract
A paradox is a seemingly absurd or impossible concept, proposition, or theory that is often difficult to understand or explain, sometimes apparently self-contradictory, and yet ultimately correct or true. How is it possible, for example, that oxygen "a toxic environmental poison" could be also indispensable for life (Beckman and Ames Physiol Rev 78(2):547-81, 1998; Stadtman and Berlett Chem Res Toxicol 10(5):485-94, 1997)?: the so-called Oxygen Paradox (Davies and Ursini 1995; Davies Biochem Soc Symp 61:1-31, 1995). How can French people apparently disregard the rule that high dietary intakes of cholesterol and saturated fats (e.g., cheese and paté) will result in an early death from cardiovascular diseases (Renaud and de Lorgeril Lancet 339(8808):1523-6, 1992; Catalgol et al. Front Pharmacol 3:141, 2012; Eisenberg et al. Nat Med 22(12):1428-1438, 2016)?: the so-called, French Paradox. Doubtless, the truth is not a duality and epistemological bias probably generates apparently self-contradictory conclusions. Perhaps nowhere in biology are there so many apparently contradictory views, and even experimental results, affecting human physiology and pathology as in the fields of free radicals and oxidative stress, antioxidants, foods and drinks, and dietary recommendations; this is particularly true when issues such as disease-susceptibility or avoidance, "healthspan," "lifespan," and ageing are involved. Consider, for example, the apparently paradoxical observation that treatment with low doses of a substance that is toxic at high concentrations may actually induce transient adaptations that protect against a subsequent exposure to the same (or similar) toxin. This particular paradox is now mechanistically explained as "Adaptive Homeostasis" (Davies Mol Asp Med 49:1-7, 2016; Pomatto et al. 2017a; Lomeli et al. Clin Sci (Lond) 131(21):2573-2599, 2017; Pomatto and Davies 2017); the non-damaging process by which an apparent toxicant can activate biological signal transduction pathways to increase expression of protective genes, by mechanisms that are completely different from those by which the same agent induces toxicity at high concentrations. In this review, we explore the influences and effects of paradoxes such as the Oxygen Paradox and the French Paradox on the etiology, progression, and outcomes of many of the major human age-related diseases, as well as the basic biological phenomenon of ageing itself.
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Affiliation(s)
- Joanna M S Davies
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Josiane Cillard
- Lab de Biologie Cellulaire et Végétale, Faculté de Pharmacie, Université de Rennes, 35043, Rennes Cedex, France
| | - Bertrand Friguet
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
- INSERM ERL U1164, 75005, Paris, France
| | - Enrique Cadenas
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- School of Pharmacy, University of Southern California, Los Angeles, CA, 90089-9121, USA
- Department of Biochemistry & Molecular Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA
| | - Jean Cadet
- Département de Médecine nucléaire et Radiobiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
| | - Rachael Cayce
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Andrew Fishmann
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - David Liao
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Anne-Laure Bulteau
- Institut de Génomique Fonctionnelle de Lyon,ENS de Lyon, CNRS, 69364, Lyon Cedex 07, France
| | - Frédéric Derbré
- Laboratory for Movement, Sport and Health Sciences-EA 1274, M2S, Université de Rennes 2-ENS, Bruz, 35170, Rennes, France
| | - Amélie Rébillard
- Laboratory for Movement, Sport and Health Sciences-EA 1274, M2S, Université de Rennes 2-ENS, Bruz, 35170, Rennes, France
| | - Steven Burstein
- The Medical Group, Internal Medicine, Rheumatology & Osteoporosis, Dermatology, Pulmonology, Ophthalmology, and Cardiology; the Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Etienne Hirsch
- INSERM UMR 1127-CNRS UMR 7225, Institut du cerveau et de la moelle épinière-ICM Thérapeutique Expérimentale de la Maladie de Parkinson, Université Pierre et Marie Curie, 75651, Paris Cedex 13, France
| | - Robert A Kloner
- Huntington Medical Research Institutes, Pasadena, CA, 91105, USA
| | - Michael Jakowec
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Giselle Petzinger
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Delphine Sauce
- Chronic infections and Immune ageing, INSERM U1135, Hopital Pitie-Salpetriere, Pierre et Marie Curie University, 75013, Paris, France
| | | | - Isabelle Limon
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
| | - Fulvio Ursini
- Department of Molecular Medicine, University of Padova, 35121, Padova, Italy
| | - Matilde Maiorino
- Department of Molecular Medicine, University of Padova, 35121, Padova, Italy
| | - Christina Economides
- Los Angeles Cardiology Associates, Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Christian J Pike
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Division of Neurobiology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Pinchas Cohen
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA
| | - Anne Negre Salvayre
- Lipid peroxidation, Signalling and Vascular Diseases INSERM U1048, 31432, Toulouse Cedex 4, France
| | - Matthew R Halliday
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Adam J Lundquist
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Nicolaus A Jakowec
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | | | - Mathias Mericskay
- Laboratoire de Signalisation et Physiopathologie Cardiovasculaire-Inserm UMR-S 1180, Faculté de Pharmacie, Université Paris-Sud, 92296 Châtenay-Malabry, Paris, France
| | - Jean Mariani
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
| | - Zhenlin Li
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
- INSERM ERL U1164, 75005, Paris, France
| | - David Huang
- Department of Radiation Oncology, Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Ellsworth Grant
- Department of Oncology & Hematology, Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
| | - Henry J Forman
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Caleb E Finch
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Los Angeles Cardiology Associates, Hospital of the Good Samaritan, Los Angeles, CA, 90017, USA
- Division of Molecular & Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Patrick Y Sun
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Division of Molecular & Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Laura C D Pomatto
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA
- Division of Molecular & Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA
| | - Onnik Agbulut
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
| | - David Warburton
- Children's Hospital of Los Angeles, Developmental Biology, Regenerative Medicine and Stem Cell Therapeutics program and the Center for Environmental Impact on Global Health Across the Lifespan at The Saban Research Institute, Los Angeles, CA, 90027, USA
- Department of Pediatrics, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA
| | - Christian Neri
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
| | - Mustapha Rouis
- Institut de Biologie Paris-Seine (IBPS), UMR CNRS 8256, Biological Adaptation and Ageing, Sorbonne Universités, UPMC Univ Paris 06, 75005, Paris, France
- INSERM ERL U1164, 75005, Paris, France
| | - Pierre Cillard
- Lab de Biologie Cellulaire et Végétale, Faculté de Pharmacie, Université de Rennes, 35043, Rennes Cedex, France
| | - Jacqueline Capeau
- DR Saint-Antoine UMR_S938, UPMC, Inserm Faculté de Médecine, Université Pierre et Marie Curie, 75012, Paris, France
| | - Jean Rosenbaum
- Scientific Service of the Embassy of France in the USA, Consulate General of France in Los Angeles, Los Angeles, CA, 90025, USA
| | - Kelvin J A Davies
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA, 90089-0191, USA.
- Department of Biochemistry & Molecular Medicine, Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, 90033, USA.
- Division of Molecular & Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, CA, 90089-0191, USA.
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Li F, Geng X, Khan H, Pendy JT, Peng C, Li X, Rafols JA, Ding Y. Exacerbation of Brain Injury by Post-Stroke Exercise Is Contingent Upon Exercise Initiation Timing. Front Cell Neurosci 2017; 11:311. [PMID: 29051728 PMCID: PMC5633611 DOI: 10.3389/fncel.2017.00311] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 09/19/2017] [Indexed: 12/19/2022] Open
Abstract
Accumulating evidence has demonstrated that post-stroke physical rehabilitation may reduce morbidity. The effectiveness of post-stroke exercise, however, appears to be contingent upon exercise initiation. This study assessed the hypothesis that very early exercise exacerbates brain injury, induces reactive oxygen species (ROS) generation, and promotes energy failure. A total of 230 adult male Sprague-Dawley rats were subjected to middle cerebral artery (MCA) occlusion for 2 h, and randomized into eight groups, including two sham injury control groups, three non-exercise and three exercise groups. Exercise was initiated after 6 h, 24 h and 3 days of reperfusion. Twenty-four hours after completion of exercise (and at corresponding time points in non-exercise controls), infarct volumes and apoptotic cell death were examined. Early brain oxidative metabolism was quantified by examining ROS, ATP and NADH levels 0.5 h after completion of exercise. Furthermore, protein expressions of angiogenic growth factors were measured in order to determine whether post-stroke angiogenesis played a role in rehabilitation. As expected, ischemic stroke resulted in brain infarction, apoptotic cell death and ROS generation, and diminished NADH and ATP production. Infarct volumes and apoptotic cell death were enhanced (p < 0.05) by exercise that was initiated after 6 h of reperfusion, but decreased by late exercise (24 h, 3 days). This exacerbated brain injury at 6 h was associated with increased ROS levels (p < 0.05), and decreased (p < 0.05) NADH and ATP levels. In conclusion, very early exercise aggravated brain damage, and early exercise-induced energy failure with ROS generation may underlie the exacerbation of brain injury. These results shed light on the manner in which exercise initiation timing may affect post-stroke rehabilitation.
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Affiliation(s)
- Fengwu Li
- Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaokun Geng
- Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Hajra Khan
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - John T Pendy
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Changya Peng
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Xiaorong Li
- Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China
| | - Jose A Rafols
- Department of Anatomy and Cell Biology, Wayne State University School of Medicine, Detroit, MI, United States
| | - Yuchuan Ding
- Department of Neurology, Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
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24
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Stevenson ME, Behnke VK, Swain RA. Exercise pattern and distance differentially affect hippocampal and cerebellar expression of FLK-1 and FLT-1 receptors in astrocytes and blood vessels. Behav Brain Res 2017; 337:8-16. [PMID: 28958753 DOI: 10.1016/j.bbr.2017.09.037] [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] [Received: 05/05/2017] [Revised: 09/19/2017] [Accepted: 09/23/2017] [Indexed: 12/17/2022]
Abstract
Aerobic exercise benefits the body and brain. In the brain, benefits include neuroprotection and improved cognition. These exercise-induced changes are attributed in part to angiogenesis: the growth of new capillaries from preexisting vessels. One critical factor involved in the regulation of angiogenesis is VEGF and its receptors Flk-1 and Flt-1. Although exercise is generally found to be beneficial, there are wide variations in exercise regimens across experiments. This study standardized some of these variations. Rats were assigned to a voluntary or a forced wheel running exercise condition. Within each condition, animals ran for either a long (1000m) or short distance (500m) for up to 24h. Additionally, one voluntary group had unrestricted access to the wheels for the full 24h. Exercising animals were then compared to inactive controls, based on unbiased stereological quantification of Flk-1 and Flt-1 immunohistochemical labeling in the hippocampus and cerebellum. Findings indicated that voluntary exercise, but not forced exercise, could significantly increase Flk-1 and Flt-1 expression in the hippocampus. Interestingly, Flk-1 expression was elevated in astrocytes and Flt-1 in vessels. In the cerebellum long distance forced exercise resulted in the least Flk-1 expression compared to other conditions, and Flt-1 expression in exercising animals either did not change or was suppressed relative to inactive controls.
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Affiliation(s)
- Morgan E Stevenson
- Department of Psychology, University of Wisconsin Milwaukee, Milwaukee, WI, USA
| | - Vienna K Behnke
- Department of Psychology, University of Wisconsin Milwaukee, Milwaukee, WI, USA
| | - Rodney A Swain
- Department of Psychology, University of Wisconsin Milwaukee, Milwaukee, WI, USA.
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25
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Rezaei R, Nourshahi M, Khodagholi F, Haghparast A, Nasoohi S, Bigdeli M, Ashabi G. Differential impact of treadmill training on stroke-induced neurological disorders. Brain Inj 2017; 31:1910-1917. [DOI: 10.1080/02699052.2017.1346287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Rasoul Rezaei
- Department of Sport Physiology, Faculty of Physical Education and Sport Sciences, Shahid Beheshti University, G.C., Evin 198396113, Tehran, Iran
| | - Maryam Nourshahi
- Department of Sport Physiology, Faculty of Physical Education and Sport Sciences, Shahid Beheshti University, G.C., Evin 198396113, Tehran, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Haghparast
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sanaz Nasoohi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Ghorbangol Ashabi
- Department of Physiology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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26
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Modest Amounts of Voluntary Exercise Reduce Pain- and Stress-Related Outcomes in a Rat Model of Persistent Hind Limb Inflammation. THE JOURNAL OF PAIN 2017; 18:687-701. [PMID: 28185925 DOI: 10.1016/j.jpain.2017.01.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 01/13/2017] [Accepted: 01/17/2017] [Indexed: 11/23/2022]
Abstract
Aerobic exercise improves outcomes in a variety of chronic health conditions, yet the support for exercise-induced effects on chronic pain in humans is mixed. Although many rodent studies have examined the effects of exercise on persistent hypersensitivity, the most used forced exercise paradigms that are known to be highly stressful. Because stress can also produce analgesic effects, we studied how voluntary exercise, known to reduce stress in healthy subjects, alters hypersensitivity, stress, and swelling in a rat model of persistent hind paw inflammation. Our data indicate that voluntary exercise rapidly and effectively reduces hypersensitivity as well as stress-related outcomes without altering swelling. Moreover, the level of exercise is unrelated to the analgesic and stress-reducing effects, suggesting that even modest amounts of exercise may impart significant benefit in persistent inflammatory pain states. PERSPECTIVE Modest levels of voluntary exercise reduce pain- and stress-related outcomes in a rat model of persistent inflammatory pain, independently of the amount of exercise. As such, consistent, self-regulated activity levels may be more relevant to health improvement in persistent pain states than standardized exercise goals.
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27
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Hall S, Deurveilher S, Ko KR, Burns J, Semba K. Region-specific increases in FosB/ΔFosB immunoreactivity in the rat brain in response to chronic sleep restriction. Behav Brain Res 2017; 322:9-17. [PMID: 28089853 DOI: 10.1016/j.bbr.2017.01.024] [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] [Received: 09/27/2016] [Revised: 01/05/2017] [Accepted: 01/11/2017] [Indexed: 01/23/2023]
Abstract
Using a rat model of chronic sleep restriction (CSR) featuring periodic sleep deprivation with slowly rotating wheels (3h on/1h off), we previously observed that 99h of this protocol induced both homeostatic and allostatic (adaptive) changes in physiological and behavioural measures. Notably, the initial changes in sleep intensity and attention performance gradually adapted during CSR despite accumulating sleep loss. To identify brain regions involved in these responses, we used FosB/ΔFosB immunohistochemistry as a marker of chronic neuronal activation. Adult male rats were housed in motorized activity wheels and underwent the 3/1 CSR protocol for 99h, or 99h followed by 6 or 12days of recovery. Control rats were housed in home cages, locked activity wheels, or unlocked activity wheels that the animals could turn freely. Immunohistochemistry was conducted using an antibody that recognized both FosB and ΔFosB, and 24 brain regions involved in sleep/wake, autonomic, and limbic functions were examined. The number of darkly-stained FosB/ΔFosB-immunoreactive cells was increased immediately following 99h of CSR in 8/24 brain regions, including the medial preoptic and perifornical lateral hypothalamic areas, dorsomedial and paraventricular hypothalamic nuclei, and paraventricular thalamic nucleus. FosB/ΔFosB labeling was at control levels in all 8 brain areas following 6 or 12 recovery days, suggesting that most of the immunoreactivity immediately after CSR reflected FosB, the more transient marker of chronic neuronal activation. This region-specific induction of FosB/ΔFosB following CSR may be involved in the mechanisms underlying the allostatic changes in behavioural and physiological responses to CSR.
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Affiliation(s)
- Shannon Hall
- Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Samüel Deurveilher
- Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Kristin Robin Ko
- School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Joan Burns
- Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Kazue Semba
- Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Psychology & Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada.
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28
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Cobianchi S, Arbat-Plana A, López-Álvarez VM, Navarro X. Neuroprotective Effects of Exercise Treatments After Injury: The Dual Role of Neurotrophic Factors. Curr Neuropharmacol 2017; 15:495-518. [PMID: 27026050 PMCID: PMC5543672 DOI: 10.2174/1570159x14666160330105132] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 02/19/2016] [Accepted: 03/03/2016] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Shared connections between physical activity and neuroprotection have been studied for decades, but the mechanisms underlying this effect of specific exercise were only recently brought to light. Several evidences suggest that physical activity may be a reasonable and beneficial method to improve functional recovery in both peripheral and central nerve injuries and to delay functional decay in neurodegenerative diseases. In addition to improving cardiac and immune functions, physical activity may represent a multifunctional approach not only to improve cardiocirculatory and immune functions, but potentially modulating trophic factors signaling and, in turn, neuronal function and structure at times that may be critical for neurodegeneration and regeneration. METHODS Research content related to the effects of physical activity and specific exercise programs in normal and injured nervous system have been reviewed. RESULTS Sustained exercise, particularly if applied at moderate intensity and early after injury, exerts anti-inflammatory and pro-regenerative effects, and may boost cognitive and motor functions in aging and neurological disorders. However, newest studies show that exercise modalities can differently affect the production and function of brain-derived neurotrophic factor and other neurotrophins involved in the generation of neuropathic conditions. These findings suggest the possibility that new exercise strategies can be directed to nerve injuries with therapeutical benefits. CONCLUSION Considering the growing burden of illness worldwide, understanding of how modulation of neurotrophic factors contributes to exercise-induced neuroprotection and regeneration after peripheral nerve and spinal cord injuries is a relevant topic for research, and represents the beginning of a new non-pharmacological therapeutic approach for better rehabilitation of neural disorders.
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Affiliation(s)
- Stefano Cobianchi
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona, Bellaterra, Spain
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain
| | - Ariadna Arbat-Plana
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona, Bellaterra, Spain
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain
| | - Víctor M. López-Álvarez
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona, Bellaterra, Spain
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain
| | - Xavier Navarro
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona, Bellaterra, Spain
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain
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Hoshino D, Setogawa S, Kitaoka Y, Masuda H, Tamura Y, Hatta H, Yanagihara D. Exercise-induced expression of monocarboxylate transporter 2 in the cerebellum and its contribution to motor performance. Neurosci Lett 2016; 633:1-6. [DOI: 10.1016/j.neulet.2016.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/05/2016] [Accepted: 09/09/2016] [Indexed: 12/18/2022]
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30
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Shen J, Huber M, Zhao EY, Peng C, Li F, Li X, Geng X, Ding Y. Early rehabilitation aggravates brain damage after stroke via enhanced activation of nicotinamide adenine dinucleotide phosphate oxidase (NOX). Brain Res 2016; 1648:266-276. [PMID: 27495986 DOI: 10.1016/j.brainres.2016.08.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 08/01/2016] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Although physical exercise has emerged as a potential therapeutic modality for functional deficits following ischemic stroke, the extent of this effect appears to be contingent upon the time of exercise initiation. In the present study, we assessed how exercise timing affected brain damage through hyperglycolysis-associated NADPH oxidase (NOX) activation. METHODS Using an intraluminal filament, adult male Sprague-Dawley rats were subjected to middle cerebral artery occlusion (MCAO) for 2h and assigned to one non-exercise and three exercise groups. Exercise on Rota-rod was initiated for 30min at 6h (considered very early), at 24h (early), and at day 3 (relatively late) after reperfusion. Lactate production was measured 30min after exercise completion, and NOX activity and protein expression of NOX subunits (p47(phox), gp91(phox), p22(phox) and p67(phox)) and glucose transporter 1 and 3 (Glut-1 and -3) were measured at 3 and 24h after exercise. Apoptotic cell death was determined at 24h after exercise. RESULTS Lactate production and Glut-1 and Glut-3 expression were increased after very early exercise (6h), but not after late exercise (3 days), suggesting hyperglycolysis. NOX activity was increased with the initiation of exercise at 6h (P<0.05), but not 24h or 3 days, following stroke. Early (6 and 24h), but not late (3 days), post-stroke exercise was associated with increased (P<0.05) expression of the NOX protein subunit p47(phox), gp91(phox)and p67(phox). This may have led to the enhanced apoptosis observed after early exercise in ischemic rats. CONCLUSION Hyperglycolysis and NOX activation was associated with an elevation in apoptotic cell death after very early exercise, and the detrimental effect of exercise on stroke recovery began to decrease when exercise was initiated 24h after reperfusion.
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Affiliation(s)
- Jiamei Shen
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China; Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Mitchell Huber
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Ethan Y Zhao
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Changya Peng
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Fengwu Li
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China
| | - Xiaorong Li
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China
| | - Xiaokun Geng
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China; Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
| | - Yuchuan Ding
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China; Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
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Schättin A, Baur K, Stutz J, Wolf P, de Bruin ED. Effects of Physical Exercise Combined with Nutritional Supplements on Aging Brain Related Structures and Functions: A Systematic Review. Front Aging Neurosci 2016; 8:161. [PMID: 27458371 PMCID: PMC4933713 DOI: 10.3389/fnagi.2016.00161] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 06/20/2016] [Indexed: 01/12/2023] Open
Abstract
Age-related decline in gray and white brain matter goes together with cognitive depletion. To influence cognitive functioning in elderly, several types of physical exercise and nutritional intervention have been performed. This paper systematically reviews the potential additive and complementary effects of nutrition/nutritional supplements and physical exercise on cognition. The search strategy was developed for EMBASE, Medline, PubMed, Cochrane, CINAHL, and PsycInfo databases and focused on the research question: “Is the combination of physical exercise with nutrition/nutritional supplementation more effective than nutrition/nutritional supplementation or physical exercise alone in effecting on brain structure, metabolism, and/or function?” Both mammalian and human studies were included. In humans, randomized controlled trials that evaluated the effects of nutrition/nutritional supplements and physical exercise on cognitive functioning and associated parameters in healthy elderly (>65 years) were included. The systematic search included English and German language literature without any limitation of publication date. The search strategy yielded a total of 3129 references of which 67 studies met the inclusion criteria; 43 human and 24 mammalian, mainly rodent, studies. Three out of 43 human studies investigated a nutrition/physical exercise combination and reported no additive effects. In rodent studies, additive effects were found for docosahexaenoic acid supplementation when combined with physical exercise. Although feasible combinations of physical exercise/nutritional supplements are available for influencing the brain, only a few studies evaluated which possible combinations of nutrition/nutritional supplementation and physical exercise might have an effect on brain structure, metabolism and/or function. The reason for no clear effects of combinatory approaches in humans might be explained by the misfit between the combinations of nutritional methods with the physical interventions in the sense that they were not selected on sharing of similar neuronal mechanisms. Based on the results from this systematic review, future human studies should focus on the combined effect of docosahexaenoic acid supplementation and physical exercise that contains elements of (motor) learning.
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Affiliation(s)
- Alexandra Schättin
- Department of Health Sciences and Technology, Institute of Human Movement Sciences and Sport, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
| | - Kilian Baur
- Sensory-Motor Systems Lab, Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
| | - Jan Stutz
- Department of Health Sciences and Technology, Institute of Human Movement Sciences and Sport, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
| | - Peter Wolf
- Sensory-Motor Systems Lab, Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
| | - Eling D de Bruin
- Department of Health Sciences and Technology, Institute of Human Movement Sciences and Sport, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
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Gram MG, Wogensen E, Moseholm K, Mogensen J, Malá H. Exercise-induced improvement in cognitive performance after fimbria-fornix transection depends on the timing of exercise administration. Brain Res Bull 2016; 125:117-26. [DOI: 10.1016/j.brainresbull.2016.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 06/15/2016] [Accepted: 06/21/2016] [Indexed: 01/29/2023]
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The effects of hormones and physical exercise on hippocampal structural plasticity. Front Neuroendocrinol 2016; 41:23-43. [PMID: 26989000 DOI: 10.1016/j.yfrne.2016.03.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 03/02/2016] [Accepted: 03/08/2016] [Indexed: 01/22/2023]
Abstract
The hippocampus plays an integral role in certain aspects of cognition. Hippocampal structural plasticity and in particular adult hippocampal neurogenesis can be influenced by several intrinsic and extrinsic factors. Here we review how hormones (i.e., intrinsic modulators) and physical exercise (i.e., an extrinsic modulator) can differentially modulate hippocampal plasticity in general and adult hippocampal neurogenesis in particular. Specifically, we provide an overview of the effects of sex hormones, stress hormones, and metabolic hormones on hippocampal structural plasticity and adult hippocampal neurogenesis. In addition, we also discuss how physical exercise modulates these forms of hippocampal plasticity, giving particular emphasis on how this modulation can be affected by variables such as exercise regime, duration, and intensity. Understanding the neurobiological mechanisms underlying the modulation of hippocampal structural plasticity by intrinsic and extrinsic factors will impact the design of new therapeutic approaches aimed at restoring hippocampal plasticity following brain injury or neurodegeneration.
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Venezia AC, Guth LM, Sapp RM, Spangenburg EE, Roth SM. Sex-dependent and independent effects of long-term voluntary wheel running on Bdnf mRNA and protein expression. Physiol Behav 2016; 156:8-15. [PMID: 26752611 PMCID: PMC4753141 DOI: 10.1016/j.physbeh.2015.12.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 12/14/2015] [Accepted: 12/29/2015] [Indexed: 12/31/2022]
Abstract
UNLABELLED The beneficial effects of physical activity on brain health (synaptogenesis, neurogenesis, enhanced synaptic plasticity, improved learning and memory) appear to be mediated through changes in region-specific expression of neurotrophins, transcription factors, and postsynaptic receptors, though investigations of sex differences in response to long-term voluntary wheel running are limited. PURPOSE To examine the effect of five months of voluntary wheel running on hippocampal mRNA and protein expression of factors critical for exercise-induced structural and functional plasticity in male and female adult mice. METHODS At 8weeks of age, male and female C57BL/6 mice were individually housed with (PA; n=20; 10 male) or without (SED; n=20; 10 male) access to a computer monitored voluntary running wheel. At 28weeks, all mice were sacrificed and hippocampi removed. Total RNA was isolated from the hippocampus and expression of total Bdnf, Bdnf transcript IV, tPA, Pgc-1a, GluR1, NR2A, and NR2B were assessed with quantitative RT-PCR and total and mature Bdnf protein were assessed with ELISA. RESULTS We found significantly higher Bdnf IV mRNA expression in PA males (p=0.03) and females (p=0.03) compared to SED animals. Total Bdnf mRNA expression was significantly greater in PA males compared to SED males (p=0.01), but there was no difference in females. Similarly, we observed significantly higher mature Bdnf protein in PA males compared to SED males (p=0.04), but not in females. CONCLUSION These findings indicate that the impact of long-term voluntary wheel running on transcriptional and post-translational regulation of Bdnf may be sex-dependent, though the activity-dependent Bdnf IV transcript is sensitive to exercise independent of sex.
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Affiliation(s)
- Andrew C Venezia
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, USA; Neuroscience and Cognitive Science Program, University of Maryland, College Park, MD, USA
| | - Lisa M Guth
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, USA
| | - Ryan M Sapp
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, USA
| | - Espen E Spangenburg
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, USA
| | - Stephen M Roth
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, USA; Neuroscience and Cognitive Science Program, University of Maryland, College Park, MD, USA.
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Wang P, Li L, Zhang Z, Kan Q, Chen S, Gao F. Time-dependent homeostasis between glucose uptake and consumption in astrocytes exposed to CoCl₂ treatment. Mol Med Rep 2016; 13:2909-17. [PMID: 26847382 DOI: 10.3892/mmr.2016.4873] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 01/11/2016] [Indexed: 11/06/2022] Open
Abstract
Hypoxia has been implicated in the pathology of the central nervous system during stroke. It also has a significant effect on the regulation of glucose transporters (GLUTs), and homeostasis between glucose uptake and consumption. CoCl2 is a hypoxia‑mimetic agent, and thus stabilizes the hypoxia‑inducible factor 1α (HIF‑1α) subunit and regulates GLUT genes. GLUT‑1 and GLUT‑3 are the most common isoforms of the GLUT family present in the brain, with the former primarily expressed in astrocytes and the latter in neurons under physiological conditions. However, it remains controversial whether GLUT‑3 is expressed in astrocytes. Additionally, it is unclear whether the regulation of GLUT‑1 and GLUT‑3, and glucose homeostasis, are affected by CoCl2 treatment in a time‑dependent manner. In the present study, mRNA and protein levels of GLUT‑1, GLUT‑3 and HIF‑1α in astrocytes were examined by reverse transcription‑quantitative polymerase chain reaction and western blot analysis, respectively. The intracellular glucose concentration, glycogen storage, ATP content, pyruvate concentration, lactate dehydrogenase (LDH) release activity and cell viability in astrocytes were also investigated. The observations of the current study confirmed that both protein and mRNA levels of GLUT‑1 and GLUT‑3 were elevated in a time‑dependent manner induced by CoCl2 treatment, followed by accumulation of HIF‑1α. Furthermore, in the early period of CoCl2 treatment (≤8 h at 100 µM), LDH release, ATP content, glycogen storage and cell viability remained unchanged, whereas intracellular pyruvate concentration increased and glucose concentration was reduced. However, in the later period of CoCl2 treatment (>8 h at 100 µM), LDH release and intracellular pyruvate concentration increased, while intracellular glucose concentration, ATP content and glycogen storage were reduced. This may be due to disruption of homeostasis and reduced cell viability. In conclusion, alteration in the expression levels of GLUT‑1 and GLUT‑3, and the homeostasis between glucose uptake and consumption were affected by CoCl2 treatment, in a time‑dependent manner, and may result in reduced energy production and cell viability in astrocytes.
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Affiliation(s)
- Peng Wang
- Department of Basic Medicine, Nursing College, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Ling Li
- Department of Palliative Care and Hospice Care, The Ninth People's Hospital of Zhengzhou, Zhengzhou, Henan 450053, P.R. China
| | - Zhenxiang Zhang
- Department of Basic Medicine, Nursing College, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Quancheng Kan
- Department of Infectious Disease, Clinical Pharmacology Base, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Suyan Chen
- Department of Basic Medicine, Nursing College, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Feng Gao
- Department of Neuroimmunology, Henan Academy of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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Park K, Lee S, Hong Y, Park S, Choi J, Chang KT, Kim JH, Hong Y. Therapeutic physical exercise in neural injury: friend or foe? J Phys Ther Sci 2015; 27:3933-5. [PMID: 26834383 PMCID: PMC4713822 DOI: 10.1589/jpts.27.3933] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 09/01/2015] [Indexed: 01/29/2023] Open
Abstract
[Purpose] The intensity of therapeutic physical exercise is complex and sometimes
controversial in patients with neural injuries. This review assessed whether therapeutic
physical exercise is beneficial according to the intensity of the physical exercise.
[Methods] The authors identified clinically or scientifically relevant articles from
PubMed that met the inclusion criteria. [Results] Exercise training can improve body
strength and lead to the physiological adaptation of skeletal muscles and the nervous
system after neural injuries. Furthermore, neurophysiological and neuropathological
studies show differences in the beneficial effects of forced therapeutic exercise in
patients with severe or mild neural injuries. Forced exercise alters the distribution of
muscle fiber types in patients with neural injuries. Based on several animal studies,
forced exercise may promote functional recovery following cerebral ischemia via signaling
molecules in ischemic brain regions. [Conclusions] This review describes several types of
therapeutic forced exercise and the controversy regarding the therapeutic effects in
experimental animals versus humans with neural injuries. This review also provides a
therapeutic strategy for physical therapists that grades the intensity of forced exercise
according to the level of neural injury.
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Affiliation(s)
- Kanghui Park
- Ubiquitous Healthcare and Anti-aging Research Center (u-HARC), Inje University, Republic of Korea; Department of Physical Therapy, Dong-Ju College, Republic of Korea
| | - Seunghoon Lee
- Ubiquitous Healthcare and Anti-aging Research Center (u-HARC), Inje University, Republic of Korea; Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea; Biohealth Products Research Center (BPRC), Inje University, Republic of Korea
| | - Yunkyung Hong
- Ubiquitous Healthcare and Anti-aging Research Center (u-HARC), Inje University, Republic of Korea; Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea; Biohealth Products Research Center (BPRC), Inje University, Republic of Korea
| | - Sookyoung Park
- Ubiquitous Healthcare and Anti-aging Research Center (u-HARC), Inje University, Republic of Korea; Department of Physical Therapy, College of Natural Sciences, Kyungnam University, Republic of Korea
| | - Jeonghyun Choi
- Ubiquitous Healthcare and Anti-aging Research Center (u-HARC), Inje University, Republic of Korea; Biohealth Products Research Center (BPRC), Inje University, Republic of Korea; Department of Physical Therapy, Graduate School of Inje University, Gimhae, Republic of Korea, Republic of Korea
| | - Kyu-Tae Chang
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Republic of Korea
| | - Joo-Heon Kim
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Republic of Korea
| | - Yonggeun Hong
- Ubiquitous Healthcare and Anti-aging Research Center (u-HARC), Inje University, Republic of Korea; Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea; Biohealth Products Research Center (BPRC), Inje University, Republic of Korea; Department of Physical Therapy, Graduate School of Inje University, Gimhae, Republic of Korea, Republic of Korea
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Gram MG, Wogensen E, Wörtwein G, Mogensen J, Malá H. Delayed restraint procedure enhances cognitive recovery of spatial function after fimbria-fornix transection. Restor Neurol Neurosci 2015; 34:1-17. [PMID: 26518669 DOI: 10.3233/rnn-140396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE To i) evaluate the effect of a restraint procedure (7 days, 2 h/day) on place learning after fimbria-fornix transection (FF), ii) investigate effects of early vs. late administration of restraint, and iii) establish effects of the restraint procedure on expression of brain derived neurotrophic factor (BDNF) in prefrontal cortex and hippocampus. METHODS Fifty rats subjected to FF or sham surgery and divided into groups exposed to restraint immediately (early restraint) or 21 days (late restraint) after surgery were trained to acquire an allocentric place learning task. In parallel, 29 animals were subjected to FF or sham surgery and an identical restraint procedure in order to measure concentrations of BDNF and corticosterone. RESULTS The performance of the sham operated rats was positively affected by the late restraint. In FF-lesioned animals, the late restraint significantly improved task performance compared to the lesioned group with no restraint, while the early restraint was associated with a negative impact on task acquisition. Biochemical analysis after restraint procedure revealed a lesion-induced upregulation of BDNF in FF animals. CONCLUSIONS The improved task performance of lesioned animals suggests a therapeutic effect of this manipulation, independent of BDNF. This effect is sensitive to the temporal administration of treatment.
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Affiliation(s)
- Marie Gajhede Gram
- The Unit for Cognitive Neuroscience, Department of Psychology, University of Copenhagen, Copenhagen, Denmark
| | - Elise Wogensen
- The Unit for Cognitive Neuroscience, Department of Psychology, University of Copenhagen, Copenhagen, Denmark
| | - Gitta Wörtwein
- Laboratory of Neuropsychiatry, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Jesper Mogensen
- The Unit for Cognitive Neuroscience, Department of Psychology, University of Copenhagen, Copenhagen, Denmark
| | - Hana Malá
- The Unit for Cognitive Neuroscience, Department of Psychology, University of Copenhagen, Copenhagen, Denmark
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Bernardes D, Brambilla R, Bracchi-Ricard V, Karmally S, Dellarole A, Carvalho-Tavares J, Bethea JR. Prior regular exercise improves clinical outcome and reduces demyelination and axonal injury in experimental autoimmune encephalomyelitis. J Neurochem 2015; 136 Suppl 1:63-73. [PMID: 26364732 DOI: 10.1111/jnc.13354] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 08/18/2015] [Accepted: 08/21/2015] [Indexed: 12/22/2022]
Abstract
Although previous studies have shown that forced exercise modulates inflammation and is therapeutic acutely for experimental autoimmune encephalomyelitis (EAE), the long-term benefits have not been evaluated. In this study, we investigated the effects of preconditioning exercise on the clinical and pathological progression of EAE. Female C57BL/6 mice were randomly assigned to either an exercised (Ex) or unexercised (UEx) group and all of them were induced for EAE. Mice in the Ex group had an attenuated clinical score relative to UEx mice throughout the study. At 42 dpi, flow cytometry analysis showed a significant reduction in B cells, CD4(+) T cells, and CD8(+) T cells infiltrating into the spinal cord in the Ex group compared to UEx. Ex mice also had a significant reduction in myelin damage with a corresponding increase in proteolipid protein expression. Finally, Ex mice had a significant reduction in axonal damage. Collectively, our study demonstrates for the first time that a prolonged and forced preconditioning protocol of exercise improves clinical outcome and attenuates pathological hallmarks of EAE at chronic disease. In this study, we show that a program of 6 weeks of preconditioning exercise promoted a significant reduction of cells infiltrating into the spinal cord, a significant reduction in myelin damage and a significant reduction in axonal damage in experimental autoimmune encephalomyelitis (EAE) mice at 42 dpi. Collectively, our study demonstrates for the first time that a preconditioning protocol of exercise improves clinical outcome and attenuates pathological hallmarks of EAE at chronic disease.
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Affiliation(s)
- Danielle Bernardes
- Departamento de Fisiologia e Biofísica, Núcleo de Neurociências, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.,CAPES Foundation, Ministry of Education of Brazil, Brasília, DF, Brazil.,The Miami Project To Cure Paralysis, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Roberta Brambilla
- The Miami Project To Cure Paralysis, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Valerie Bracchi-Ricard
- The Miami Project To Cure Paralysis, Miller School of Medicine, University of Miami, Miami, Florida, USA.,Department of Biology, Drexel University, Philadelphia, Philadelphia, USA
| | - Shaffiat Karmally
- The Miami Project To Cure Paralysis, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Anna Dellarole
- The Miami Project To Cure Paralysis, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Juliana Carvalho-Tavares
- Departamento de Fisiologia e Biofísica, Núcleo de Neurociências, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - John R Bethea
- Department of Biology, Drexel University, Philadelphia, Philadelphia, USA
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Petzinger GM, Holschneider DP, Fisher BE, McEwen S, Kintz N, Halliday M, Toy W, Walsh JW, Beeler J, Jakowec MW. The Effects of Exercise on Dopamine Neurotransmission in Parkinson's Disease: Targeting Neuroplasticity to Modulate Basal Ganglia Circuitry. Brain Plast 2015; 1:29-39. [PMID: 26512345 PMCID: PMC4621077 DOI: 10.3233/bpl-150021] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Animal studies have been instrumental in providing evidence for exercise-induced neuroplasticity of corticostriatal circuits that are profoundly affected in Parkinson’s disease. Exercise has been implicated in modulating dopamine and glutamate neurotransmission, altering synaptogenesis, and increasing cerebral blood flow. In addition, recent evidence supports that the type of exercise may have regional effects on brain circuitry, with skilled exercise differentially affecting frontal-striatal related circuits to a greater degree than pure aerobic exercise. Neuroplasticity in models of dopamine depletion will be reviewed with a focus on the influence of exercise on the dorsal lateral striatum and prefrontal related circuitry underlying motor and cognitive impairment in PD. Although clearly more research is needed to address major gaps in our knowledge, we hypothesize that the potential effects of exercise on inducing neuroplasticity in a circuit specific manner may occur through synergistic mechanisms that include the coupling of an increasing neuronal metabolic demand and increased blood flow. Elucidation of these mechanisms may provide important new targets for facilitating brain repair and modifying the course of disease in PD.
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Affiliation(s)
- G M Petzinger
- Department of Neurology, University of Southern California, Los Angeles, CA, 90033 ; Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, 90033
| | - D P Holschneider
- Department of Neurology, University of Southern California, Los Angeles, CA, 90033 ; Department of Psychiatry and the Behavioral Sciences, University of Southern California, Los Angeles, CA, 90033
| | - B E Fisher
- Department of Neurology, University of Southern California, Los Angeles, CA, 90033 ; Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, 90033
| | - S McEwen
- Andrus Gerontology, University of Southern California, Los Angeles, CA, 90033, and Department of Psychiatry & Biobehavioral Sciences, University of California at Los Angeles, Los Angeles, CA, 90095
| | - N Kintz
- Department of Neurology, University of Southern California, Los Angeles, CA, 90033
| | - M Halliday
- Department of Neurology, University of Southern California, Los Angeles, CA, 90033
| | - W Toy
- Department of Neurology, University of Southern California, Los Angeles, CA, 90033
| | - J W Walsh
- Andrus Gerontology, University of Southern California, Los Angeles, CA, 90033, and Department of Psychiatry & Biobehavioral Sciences, University of California at Los Angeles, Los Angeles, CA, 90095
| | - J Beeler
- Department of Psychology, CUNY, New York
| | - M W Jakowec
- Department of Neurology, University of Southern California, Los Angeles, CA, 90033 ; Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, 90033
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Mirelle Costa Monteiro H, Lima Barreto-Silva N, Elizabete dos Santos G, de Santana Santos A, Séfora Bezerra Sousa M, Amâncio-dos-Santos Â. Physical exercise versus fluoxetine: Antagonistic effects on cortical spreading depression in Wistar rats. Eur J Pharmacol 2015; 762:49-54. [DOI: 10.1016/j.ejphar.2015.05.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 05/11/2015] [Accepted: 05/18/2015] [Indexed: 12/21/2022]
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Loprinzi PD, Kane CJ. Exercise and cognitive function: a randomized controlled trial examining acute exercise and free-living physical activity and sedentary effects. Mayo Clin Proc 2015; 90:450-60. [PMID: 25746399 DOI: 10.1016/j.mayocp.2014.12.023] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 12/16/2014] [Accepted: 12/22/2014] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To simultaneously examine the effects of acute exercise intensity and free-living physical activity and sedentary behavior on cognitive function in young, healthy adults. PATIENTS AND METHODS Using a counterbalanced, crossover, randomized controlled design, 87 young adults (mean age, 21.4 years) completed various cognitive assessments with and without an acute bout of exercise preceding the assessment. Participants were randomized into 1 of 4 groups to complete a 30-minute bout of acute exercise: control (no exercise), light intensity (40%-50% of predicted maximum heart rate [HR(max)]), moderate intensity (51%-70% of predicted HR(max)), or vigorous intensity (71%-85% of predicted HR(max)). Subjectively and objectively determined (accelerometry) physical activity and sedentary behavior were assessed to examine the association between these free-living behaviors and cognitive function. The study duration was August 26, 2013, to September 11, 2014. RESULTS Concentration-related cognition (mean ± SD Feature Match test score) was significantly higher after a 30-minute acute bout of moderate-intensity exercise (145.1±26.9) compared with cognitive assessment without exercise (121.3±19.2; P=.004). Furthermore, questionnaire-determined sedentary behavior was inversely associated with visual attention and task switching (Trail Making Test A score) (β=-0.23; P=.04). Last, estimated cardiorespiratory fitness (volume of maximum oxygen consumption) was positively associated with reasoning-related cognitive function (Odd One Out test score) (β=0.49; P=.05); when adding metabolic equivalent of task minutes per week to this model, the results were not significant (β=0.47; P=.07). CONCLUSION These findings provide some support for acute moderate-intensity exercise, sedentary behavior, and cardiorespiratory fitness being associated with executive functioning-related cognitive function in young, healthy adults.
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Affiliation(s)
- Paul D Loprinzi
- Department of Health, Exercise Science, and Recreation Management, School of Applied Sciences, Center for Health Behavior Research, The University of Mississippi, University.
| | - Christy J Kane
- Department of Respiratory Therapy, Donna and Allan Lansing School of Nursing and Health Sciences, Bellarmine University, Louisville, KY
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Abstract
Background:The current study explored the effects of treadmill exercise intensity on functional recovery and hippocampal phospho-NR2B (p-NR2B) expression in cerebral ischemic rats, induced by permanent middle cerebral artery occlusion (MCAO) surgery.Method:Adult male Sprague-Dawley rats were randomly divided into four groups, including sham, no exercise (NE), low intensity training (LIT, v = 15 m/min), and moderate intensity training groups (MIT, v = 20 m/min). At different time points, the hippocampal expressions of p-NR2B and total NR2B were examined. In addition, neurological deficit score (NDS), body weight, and 2,3,5-triphenyltetrazolium chloride (TTC) staining were used to evaluate brain infarct volume as assessments of post-stroke functional recovery. In order to investigate the effect of exercise on survival, the mortality rate was also recorded.Results:The results showed that treadmill exercise significantly decreased hippocampal expression of p-NR2B but didn't change the total NR2B, compared to the NE group on the 3rd, 7th, and 14th days following MCAO surgery. The effect on changes in p-NR2B levels, body weight, and brain infarct volume were more significant in the LIT compared to the MIT group.Discussion and Conclusion:The current findings demonstrate that physical exercise can produce neuroprotective effects, in part by down-regulating p-NR2B expression. Furthermore, the appropriate intensity of physical exercise is critical for post-stroke rehabilitation.
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Chen CC, Chang MW, Chang CP, Chan SC, Chang WY, Yang CL, Lin MT. A forced running wheel system with a microcontroller that provides high-intensity exercise training in an animal ischemic stroke model. ACTA ACUST UNITED AC 2014; 47:858-68. [PMID: 25140816 PMCID: PMC4181221 DOI: 10.1590/1414-431x20143754] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 05/12/2014] [Indexed: 12/19/2022]
Abstract
We developed a forced non-electric-shock running wheel (FNESRW) system that provides rats with high-intensity exercise training using automatic exercise training patterns that are controlled by a microcontroller. The proposed system successfully makes a breakthrough in the traditional motorized running wheel to allow rats to perform high-intensity training and to enable comparisons with the treadmill at the same exercise intensity without any electric shock. A polyvinyl chloride runway with a rough rubber surface was coated on the periphery of the wheel so as to permit automatic acceleration training, and which allowed the rats to run consistently at high speeds (30 m/min for 1 h). An animal ischemic stroke model was used to validate the proposed system. FNESRW, treadmill, control, and sham groups were studied. The FNESRW and treadmill groups underwent 3 weeks of endurance running training. After 3 weeks, the experiments of middle cerebral artery occlusion, the modified neurological severity score (mNSS), an inclined plane test, and triphenyltetrazolium chloride were performed to evaluate the effectiveness of the proposed platform. The proposed platform showed that enhancement of motor function, mNSS, and infarct volumes was significantly stronger in the FNESRW group than the control group (P<0.05) and similar to the treadmill group. The experimental data demonstrated that the proposed platform can be applied to test the benefit of exercise-preconditioning-induced neuroprotection using the animal stroke model. Additional advantages of the FNESRW system include stand-alone capability, independence of subjective human adjustment, and ease of use.
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Affiliation(s)
- C C Chen
- Department of Electrical Engineering, National Cheng-Kung University, Tainan, Taiwan
| | - M W Chang
- Department of Electrical Engineering, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - C P Chang
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - S C Chan
- Department of Electrical Engineering, National Cheng-Kung University, Tainan, Taiwan
| | - W Y Chang
- Department of Electrical Engineering, National Cheng-Kung University, Tainan, Taiwan
| | - C L Yang
- Department of Electrical Engineering, National Cheng-Kung University, Tainan, Taiwan
| | - M T Lin
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan
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Hatchard T, Ting JJ, Messier C. Translating the impact of exercise on cognition: methodological issues in animal research. Behav Brain Res 2014; 273:177-88. [PMID: 25026095 DOI: 10.1016/j.bbr.2014.06.043] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/12/2014] [Accepted: 06/23/2014] [Indexed: 12/22/2022]
Abstract
Physical exercise and fitness have been proposed as potential factors that promote healthy cognitive aging. Some of the support for this hypothesis has come from animal research. Animal studies are also used to propose the physiological mechanisms underlying the cognitive performance improvement associated with exercise. In the present review and meta-analysis, we discuss several methodological problems that limit the contribution of animal studies to the understanding of the putative effects of exercise on cognitive aging. We suggest that the most likely measure to equate exercise intensity in rodent and humans may be oxygen consumption (VO2) because observed values are surprisingly similar in young and older rodents and humans. For practical reasons, several animal studies use young rodents kept in social isolation. We show that social isolation is associated with an enhanced impact of exercise on cognitive performance but not on some physiological measures thought to mediate the effect of exercise. Surprisingly, two months or more of exercise intervention appeared to be ineffective to promote cognitive performance compared to shorter durations. We argue that impact of exercise in socially isolated animals is explained by an alleviation of environmental impoverishment as much as an effect of physical exercise. It is possible that the introduction of exercise in rodents is partly mediated by environmental changes. It may explain why larger effects are observed for the shorter durations of exercise while much smaller effects are found after longer periods of exercise.
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Affiliation(s)
- Taylor Hatchard
- School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Room 2076A, Ottawa, ON, Canada K1N 6N5
| | - Jaimee J Ting
- School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Room 2076A, Ottawa, ON, Canada K1N 6N5
| | - Claude Messier
- School of Psychology, University of Ottawa, 136 Jean-Jacques Lussier Room 2076A, Ottawa, ON, Canada K1N 6N5.
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45
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Wang X, Zhang M, Feng R, Li WB, Ren SQ, Zhang J, Zhang F. Physical exercise training and neurovascular unit in ischemic stroke. Neuroscience 2014; 271:99-107. [PMID: 24780769 DOI: 10.1016/j.neuroscience.2014.04.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/16/2014] [Accepted: 04/09/2014] [Indexed: 10/25/2022]
Abstract
Physical exercise could exert a neuroprotective effect in both clinical studies and animal experiments. A series of related studies have indicated that physical exercise could reduce infarct volume, alleviate neurological deficits, decrease blood-brain barrier dysfunction, promote angiogenesis in cerebral vascular system and increase the survival rate after ischemic stroke. In this review, we summarized the protective effects of physical exercise on neurovascular unit (NVU), including neurons, astrocytes, pericytes and the extracellular matrix. Furthermore, it was demonstrated that exercise training could decrease the blood-brain barrier dysfunction and promote angiogenesis in cerebral vascular system. An awareness of the exercise intervention benefits pre- and post stroke may lead more stroke patients and people with high-risk factors to accept exercise therapy for the prevention and treatment of stroke.
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Affiliation(s)
- X Wang
- Department of Neurology, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - M Zhang
- Department of Pathophysiology, Hebei Medical University, Shijiazhuang 050017, PR China
| | - R Feng
- Department of Neurology, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - W B Li
- Department of Pathophysiology, Hebei Medical University, Shijiazhuang 050017, PR China
| | - S Q Ren
- Department of Neurology, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - J Zhang
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - F Zhang
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China; Hebei Provincial Orthopedic Biomechanics Key Laboratory, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China.
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46
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Takimoto M, Hamada T. Acute exercise increases brain region-specific expression of MCT1, MCT2, MCT4, GLUT1, and COX IV proteins. J Appl Physiol (1985) 2014; 116:1238-50. [PMID: 24610532 DOI: 10.1152/japplphysiol.01288.2013] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The brain is capable of oxidizing lactate and ketone bodies through monocarboxylate transporters (MCTs). We examined the protein expression of MCT1, MCT2, MCT4, glucose transporter 1 (GLUT1), and cytochrome-c oxidase subunit IV (COX IV) in the rat brain within 24 h after a single exercise session. Brain samples were obtained from sedentary controls and treadmill-exercised rats (20 m/min, 8% grade). Acute exercise resulted in an increase in lactate in the cortex, hippocampus, and hypothalamus, but not the brainstem, and an increase in β-hydroxybutyrate in the cortex alone. After a 2-h exercise session MCT1 increased in the cortex and hippocampus 5 h postexercise, and the effect lasted in the cortex for 24 h postexercise. MCT2 increased in the cortex and hypothalamus 5-24 h postexercise, whereas MCT2 increased in the hippocampus immediately after exercise, and remained elevated for 10 h postexercise. Regional upregulation of MCT2 after exercise was associated with increases in brain-derived neurotrophic factor and tyrosine-related kinase B proteins, but not insulin-like growth factor 1. MCT4 increased 5-10 h postexercise only in the hypothalamus, and was associated with increased hypoxia-inducible factor-1α expression. However, none of the MCT isoforms in the brainstem was affected by exercise. Whereas GLUT 1 in the cortex increased only at 18 h postexercise, COX IV in the hippocampus increased 10 h after exercise and remained elevated for 24 h postexercise. These results suggest that acute prolonged exercise induces the brain region-specific upregulation of MCT1, MCT2, MCT4, GLUT1, and COX IV proteins.
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Affiliation(s)
- Masaki Takimoto
- Laboratory of Exercise Physiology and Biochemistry, Graduate School of Sport and Exercise Sciences, Osaka University of Health and Sport Sciences, Osaka, Japan
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Mariotti R, Fattoretti P, Malatesta M, Nicolato E, Sandri M, Zancanaro C. Forced mild physical training improves blood volume in the motor and hippocampal cortex of old mice. J Nutr Health Aging 2014; 18:178-83. [PMID: 24522471 DOI: 10.1007/s12603-013-0384-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVES To assess the effect of mild forced physical training on cerebral blood volume (CBV) and other brain parameters in old mice. SETTING Treadmill in the animal house. PARTICIPANTS Thirty old (>25 mo) male mice were randomly assigned to one of three groups, exercise (E), exercise plus testosterone (T) (ET), and rest (C). INTERVENTION Mild physical training on treadmill (30 min a day at belt speed = 8 m/min, five days a week) with or without one weekly injection of testosterone. MEASUREMENTS CBV, quantitative transverse relaxation time (T2) maps, and cortical thickness were measured by magnetic resonance imaging. RESULTS A significant increase of CBV was found in the motor and hippocampal cortex of E and ET mice; cortical thickness was not affected. T2 maps analysis suggested that water distribution did not change. T administration did not add to the effect of physical training. CONCLUSION This work provides first quantitative evidence that exercise initiated at old age is able to improve the hemodynamic status of the brain cortex in key regions for movement and cognition without inducing edema.
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Affiliation(s)
- R Mariotti
- Prof. Carlo Zancanaro, DSNNMM, Sezione di Anatomia e Istologia; Strada Le Grazie 8, I-37134 Verona, Italy. Tel. +39 045 8027155; Fax. +39 045 8027163, E-mail address:
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Kim G, Kim E. Effects of treadmill training on limb motor function and acetylcholinesterase activity in rats with stroke. J Phys Ther Sci 2013; 25:1227-30. [PMID: 24259763 PMCID: PMC3820190 DOI: 10.1589/jpts.25.1227] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 05/10/2013] [Indexed: 12/20/2022] Open
Abstract
[Purpose] In the present study, we investigated the effects of treadmill training on limb motor function and acetylcholinesterase activity following focal cerebral ischemia injury. [Methods] Focal cerebral ischemia was examined in adult male Sprague-Dawley rats by using a middle cerebral artery occlusion model. Rats were randomly divided into 3 groups. Group I included untreated normal rats (n=12), Group II included untreated rats with focal cerebral ischemia (n=12), and Group III included rats that performed treadmill exercise (20 m/min) training after focal cerebral ischemia (n=12). We determined the limb placement test score for each rat on days 1,7, 14, and 21; acetylcholinesterase activity in the hippocampus was examined at the end of the experiment. [Results] We observed that the motor behavior index improved in the treadmill group, and hippocampal acetylcholinesterase activity was decreased. [Conclusion] These results indicated that treadmill training after focal cerebral ischemia exerts a neuroprotective effects against ischemic brain injury by improving motor performance and decreasing the levels of acetylcholinesterase activity. Furthermore, these results suggest that treadmill training at an appropriate intensity is critical for post-stroke rehabilitation.
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Affiliation(s)
- Gyeyeop Kim
- Department of Physical Therapy, Dongshin University, Republic of Korea
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Loprinzi PD, Herod SM, Cardinal BJ, Noakes TD. Physical activity and the brain: A review of this dynamic, bi-directional relationship. Brain Res 2013; 1539:95-104. [DOI: 10.1016/j.brainres.2013.10.004] [Citation(s) in RCA: 160] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/26/2013] [Accepted: 10/03/2013] [Indexed: 12/23/2022]
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50
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Elfving B, Christensen T, Ratner C, Wienecke J, Klein AB. Transient activation of mTOR following forced treadmill exercise in rats. Synapse 2013; 67:620-5. [PMID: 23536493 DOI: 10.1002/syn.21668] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/18/2013] [Accepted: 03/20/2013] [Indexed: 12/19/2022]
Abstract
The beneficial effect of exercise on hippocampal plasticity is possibly mediated by increased angiogenesis and neurogenesis. In angiogenesis, insulin-like growth factor-1 (IGF-1), vascular endothelial growth factor (VEGF), and hypoxia-inducible factor 1, alpha subunit (HIF1α) are important factors, while the induction of neurogenesis requires signaling through the VEGF receptor, Flk-1 (VEGFR-2). VEGF expression is believed to be regulated by two distinct mTOR (mammalian target of Rapamycin)-containing multiprotein complexes mTORC1 and mTORC2, respectively. This study was initiated to investigate the effect of exercise on the expression of VEGF, cognate receptors, HIF1α, mTORC1, and mTORC2 in hippocampus and frontal cortex. To this end, we measured messenger RNA (mRNA) levels in rat brain using quantitative real-time polymerase chain reaction (real-time qPCR) after forced treadmill exercise for 1 day, 2 weeks, and 8 weeks. Rats were euthanized either immediately (0 h) or 24 h after last exercise session. Here, we show that exercise affected mRNA levels of VEGF, VEGFR2, and the coreceptor neuropilin 2 (NRP2) when the rats were euthanized immediately, whereas at 24 h only the expression of mTOR was regulated after a single bout of exercise. In conclusion, the effect of treadmill exercise on the VEGF system is acute rather than chronic and there is a transient activation of mTOR. More studies are needed to understand whether this could be beneficial in the treatment of neuropsychiatric disorders.
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Affiliation(s)
- Betina Elfving
- Center for Psychiatric Research, Aarhus University Hospital, Skovagervej 2, 8240 Risskov, Denmark.
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