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Wang D, Zhang HX, Yan GJ, Zhao HR, Dong XH, Tan YX, Li S, Lu MN, Mei R, Liu LN, Wang XY, Xiyang YB. Voluntary running wheel exercise induces cognitive improvement post traumatic brain injury in mouse model through redressing aberrant excitation regulated by voltage-gated sodium channels 1.1, 1.3, and 1.6. Exp Brain Res 2024; 242:205-224. [PMID: 37994916 PMCID: PMC10786980 DOI: 10.1007/s00221-023-06734-2] [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: 04/17/2023] [Accepted: 10/29/2023] [Indexed: 11/24/2023]
Abstract
Traumatic brain injury (TBI) leads to disturbed brain discharge rhythm, elevated excitability, anxiety-like behaviors, and decreased learning and memory capabilities. Cognitive dysfunctions severely affect the quality of life and prognosis of TBI patients, requiring effective rehabilitation treatment. Evidence indicates that moderate exercise after brain injury decreases TBI-induced cognitive decline. However, the underlying mechanism remains unelucidated. Our results demonstrate that TBI causes cognitive impairment behavior abnormalities and overexpression of Nav1.1, Nav1.3 and Nav1.6 proteins inside the hippocampus of mice models. Three weeks of voluntary running wheel (RW) exercise treatments before or/and post-injury effectively redressed the aberrant changes caused by TBI. Additionally, a 10% exercise-conditioned medium helped recover cell viability, neuronal sodium current and expressions of Nav1.1, Nav1.3 and Nav1.6 proteins across cultured neurons after injury. Therefore, the results validate the neuroprotection induced by voluntary RW exercise treatment before or/and post-TBI. The RW exercise-induced improvement in cognitive behaviors and neuronal excitability could be associated with correcting the Nav1.1, Nav1.3, and Nav1.6 expression levels. The current study proves that voluntary exercise is an effective treatment strategy against TBI. The study also highlights novel potential targets for rehabilitating TBI, including the Navs proteins.
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Affiliation(s)
- Dan Wang
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong, Kunming, Yunnan, 650500, People's Republic of China
| | - Hui-Xiang Zhang
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong, Kunming, Yunnan, 650500, People's Republic of China
| | - Guo-Ji Yan
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong, Kunming, Yunnan, 650500, People's Republic of China
| | - Hao-Ran Zhao
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong, Kunming, Yunnan, 650500, People's Republic of China
| | - Xiao-Han Dong
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong, Kunming, Yunnan, 650500, People's Republic of China
| | - Ya-Xin Tan
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong, Kunming, Yunnan, 650500, People's Republic of China
- Department of Pediatrics, The People's Liberation Army (PLA) Rocket Force Characteristic Medical Center, Beijing, 100088, China
| | - Shan Li
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong, Kunming, Yunnan, 650500, People's Republic of China
- Department of Anatomy, Changsha Medical University, Changsha, China
| | - Min-Nan Lu
- Science and Technology Achievement Incubation Center, Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Rong Mei
- Department of Neurology, The First People's Hospital of Yunnan Province, Kunming, Yunnan, China
| | - Li-Na Liu
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong, Kunming, Yunnan, 650500, People's Republic of China
| | - Xu-Yang Wang
- Department of Neurosurgery, Shanghai Sixth People' Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, People's Republic of China.
| | - Yan-Bin Xiyang
- Institute of Neuroscience, Faculty of Basic Medical Science, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong, Kunming, Yunnan, 650500, People's Republic of China.
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2
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Qubty D, Frid K, Har-Even M, Rubovitch V, Gabizon R, Pick CG. Nano-PSO Administration Attenuates Cognitive and Neuronal Deficits Resulting from Traumatic Brain Injury. Molecules 2022; 27:molecules27092725. [PMID: 35566074 PMCID: PMC9105273 DOI: 10.3390/molecules27092725] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 11/17/2022] Open
Abstract
Traumatic Brain Injury (TBI), is one of the most common causes of neurological damage in young populations. It is widely considered as a risk factor for neurodegenerative diseases, such as Alzheimer’s disease (AD) and Parkinson’s (PD) disease. These diseases are characterized in part by the accumulation of disease-specific misfolded proteins and share common pathological features, such as neuronal death, as well as inflammatory and oxidative damage. Nano formulation of Pomegranate seed oil [Nano-PSO (Granagard TM)] has been shown to target its active ingredient to the brain and thereafter inhibit memory decline and neuronal death in mice models of AD and genetic Creutzfeldt Jacob disease. In this study, we show that administration of Nano-PSO to mice before or after TBI application prevents cognitive and behavioral decline. In addition, immuno-histochemical staining of the brain indicates that preventive Nano-PSO treatment significantly decreased neuronal death, reduced gliosis and prevented mitochondrial damage in the affected cells. Finally, we examined levels of Sirtuin1 (SIRT1) and Synaptophysin (SYP) in the cortex using Western blotting. Nano-PSO consumption led to higher levels of SIRT1 and SYP protein postinjury. Taken together, our results indicate that Nano-PSO, as a natural brain-targeted antioxidant, can prevent part of TBI-induced damage.
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Affiliation(s)
- Doaa Qubty
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel; (D.Q.); (M.H.-E.); (V.R.)
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Kati Frid
- The Agnes Ginges Center for Human Neurogenetics, Department of Neurology, Hadassah University Hospital, Medical School, The Hebrew University, Jerusalem 91120, Israel; (K.F.); (R.G.)
| | - Meirav Har-Even
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel; (D.Q.); (M.H.-E.); (V.R.)
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
- Sylvan Adams Sports Institute, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Vardit Rubovitch
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel; (D.Q.); (M.H.-E.); (V.R.)
| | - Ruth Gabizon
- The Agnes Ginges Center for Human Neurogenetics, Department of Neurology, Hadassah University Hospital, Medical School, The Hebrew University, Jerusalem 91120, Israel; (K.F.); (R.G.)
| | - Chaim G Pick
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel; (D.Q.); (M.H.-E.); (V.R.)
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
- Sylvan Adams Sports Institute, Tel Aviv University, Tel Aviv 6997801, Israel
- The Dr. Miriam and Sheldon G. Adelson Chair and Center for the Biology of Addictive Diseases, Tel Aviv University, Tel Aviv 6997801, Israel
- Correspondence:
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3
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Karelina K, Schneiderman K, Shah S, Fitzgerald J, Cruz RV, Oliverio R, Whitehead B, Yang J, Weil ZM. Moderate Intensity Treadmill Exercise Increases Survival of Newborn Hippocampal Neurons and Improves Neurobehavioral Outcomes after Traumatic Brain Injury. J Neurotrauma 2021; 38:1858-1869. [PMID: 33470170 PMCID: PMC8219196 DOI: 10.1089/neu.2020.7389] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Physician-prescribed rest after traumatic brain injury (TBI) is both commonplace and an increasingly scrutinized approach to TBI treatment. Although this practice remains a standard of patient care for TBI, research of patient outcomes reveals little to no benefit of prescribed rest after TBI, and in some cases prolonged rest has been shown to interfere with patient well-being. In direct contrast to the clinical advice regarding physical activity after TBI, animal models of brain injury consistently indicate that exercise is neuroprotective and promotes recovery. Here, we assessed the effect of low and moderate intensity treadmill exercise on functional outcome and hippocampal neural proliferation after brain injury. Using the controlled cortical impact (CCI) mouse model of TBI, we show that 10 days of moderate intensity treadmill exercise initiated after CCI reduces anxiety-like behavior, improves hippocampus-dependent spatial memory, and promotes hippocampal proliferation and newborn neuronal survival. Pathophysiological measures including lesion volume and axon degeneration were not altered by exercise. Taken together, these data reveal that carefully titrated physical activity may be a safe and effective approach to promoting recovery after brain injury.
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Affiliation(s)
- Kate Karelina
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Katarina Schneiderman
- Department of Neuroscience, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Sarthak Shah
- Department of Neuroscience, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Julie Fitzgerald
- Department of Neuroscience, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Ruth Velazquez Cruz
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Robin Oliverio
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Bailey Whitehead
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Jingzhen Yang
- Nationwide Children's Hospital, Center for Injury Research and Policy, Columbus, Ohio, USA
| | - Zachary M. Weil
- Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
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4
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The Role of BDNF in Experimental and Clinical Traumatic Brain Injury. Int J Mol Sci 2021; 22:ijms22073582. [PMID: 33808272 PMCID: PMC8037220 DOI: 10.3390/ijms22073582] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/23/2021] [Accepted: 03/26/2021] [Indexed: 02/07/2023] Open
Abstract
Traumatic brain injury is one of the leading causes of mortality and morbidity in the world with no current pharmacological treatment. The role of BDNF in neural repair and regeneration is well established and has also been the focus of TBI research. Here, we review experimental animal models assessing BDNF expression following injury as well as clinical studies in humans including the role of BDNF polymorphism in TBI. There is a large heterogeneity in experimental setups and hence the results with different regional and temporal changes in BDNF expression. Several studies have also assessed different interventions to affect the BDNF expression following injury. Clinical studies highlight the importance of BDNF polymorphism in the outcome and indicate a protective role of BDNF polymorphism following injury. Considering the possibility of affecting the BDNF pathway with available substances, we discuss future studies using transgenic mice as well as iPSC in order to understand the underlying mechanism of BDNF polymorphism in TBI and develop a possible pharmacological treatment.
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5
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Xiyang YB, Liu R, Wang XY, Li S, Zhao Y, Lu BT, Xiao ZC, Zhang LF, Wang TH, Zhang J. COX5A Plays a Vital Role in Memory Impairment Associated With Brain Aging via the BDNF/ERK1/2 Signaling Pathway. Front Aging Neurosci 2020; 12:215. [PMID: 32754029 PMCID: PMC7365906 DOI: 10.3389/fnagi.2020.00215] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 06/18/2020] [Indexed: 12/22/2022] Open
Abstract
Cytochrome c oxidase subunit Va (COX5A) is involved in maintaining normal mitochondrial function. However, little is known on the role of COX5A in the development and progress of Alzheimer’s disease (Martinez-Losa et al., 2018). In this study, we established and characterized the genomic profiles of genes expressed in the hippocampus of Senescence-Accelerated Mouse-prone 8 (SAMP8) mice, and revealed differential expression of COX5A among 12-month-aged SAMP8 mice and 2-month-aged SAMP8 mice. Newly established transgenic mice with systemic COX5A overexpression (51% increase) resulted in the improvement of spatial recognition memory and hippocampal synaptic plasticity, recovery of hippocampal CA1 dendrites, and activation of the BDNF/ERK1/2 signaling pathway in vivo. Moreover, mice with both COX5A overexpression and BDNF knockdown showed a poor recovery in spatial recognition memory as well as a decrease in spine density and branching of dendrites in CA1, when compared to mice that only overexpressed COX5A. In vitro studies supported that COX5A affected neuronal growth via BDNF. In summary, this study was the first to show that COX5A in the hippocampus plays a vital role in aging-related cognitive deterioration via BDNF/ERK1/2 regulation, and suggested that COX5A may be a potential target for anti-senescence drugs.
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Affiliation(s)
- Yan-Bin Xiyang
- Institute of Neuroscience, Basic Medical College, Kunming Medical University, Kunming, China
| | - Ruan Liu
- Institute of Neuroscience, Basic Medical College, Kunming Medical University, Kunming, China
| | - Xu-Yang Wang
- Department of Neurosurgery, Shanghai Jiao Tong University Affiliated 6th People's Hospital, Shanghai, China
| | - Shan Li
- Institute of Neuroscience, Basic Medical College, Kunming Medical University, Kunming, China
| | - Ya Zhao
- Institute of Neuroscience, Basic Medical College, Kunming Medical University, Kunming, China
| | - Bing-Tuan Lu
- Institute of Neuroscience, Basic Medical College, Kunming Medical University, Kunming, China
| | - Zhi-Cheng Xiao
- Monash Immunology and Stem Cell Laboratories (MISCL), Monash University, Clayton, VIC, Australia
| | - Lian-Feng Zhang
- Key Laboratory of Human Diseases Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Centre, Peking Union Medical College (PUMC), Beijing, China
| | - Ting-Hua Wang
- Institute of Neuroscience, Basic Medical College, Kunming Medical University, Kunming, China
| | - Jie Zhang
- Yunnan Provincial Key Laboratory for Birth Defects and Genetic Diseases, Department of Medical Genetics, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
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6
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Wahl D, Solon-Biet SM, Cogger VC, Fontana L, Simpson SJ, Le Couteur DG, Ribeiro RV. Aging, lifestyle and dementia. Neurobiol Dis 2019; 130:104481. [PMID: 31136814 DOI: 10.1016/j.nbd.2019.104481] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 05/13/2019] [Accepted: 05/22/2019] [Indexed: 12/21/2022] Open
Abstract
Aging is the greatest risk factor for most diseases including cancer, cardiovascular disorders, and neurodegenerative disease. There is emerging evidence that interventions that improve metabolic health with aging may also be effective for brain health. The most robust interventions are non-pharmacological and include limiting calorie or protein intake, increasing aerobic exercise, or environmental enrichment. In humans, dietary patterns including the Mediterranean, Finnish Geriatric Intervention Study to Prevent Cognitive Impairment and Disability (FINGER) and Okinawan diets are associated with improved age-related health and may reduce neurodegenerative disease including dementia. Rapamycin, metformin and resveratrol act on nutrient sensing pathways that improve cardiometabolic health and decrease the risk for age-associated disease. There is some evidence that they may reduce the risk for dementia in rodents. There is a growing recognition that improving metabolic function may be an effective way to optimize brain health during aging.
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Affiliation(s)
- Devin Wahl
- Charles Perkins Centre, University of Sydney, Sydney 2006, Australia; Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord 2139, Australia.
| | - Samantha M Solon-Biet
- Charles Perkins Centre, University of Sydney, Sydney 2006, Australia; Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord 2139, Australia
| | - Victoria C Cogger
- Charles Perkins Centre, University of Sydney, Sydney 2006, Australia; Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord 2139, Australia
| | - Luigi Fontana
- Charles Perkins Centre, University of Sydney, Sydney 2006, Australia
| | - Stephen J Simpson
- Charles Perkins Centre, University of Sydney, Sydney 2006, Australia; School of Life and Environmental Sciences, University of Sydney, Sydney 2006, Australia
| | - David G Le Couteur
- Charles Perkins Centre, University of Sydney, Sydney 2006, Australia; Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord 2139, Australia
| | - Rosilene V Ribeiro
- Charles Perkins Centre, University of Sydney, Sydney 2006, Australia; School of Life and Environmental Sciences, University of Sydney, Sydney 2006, Australia
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7
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DuPrey KM, Webner D, Lyons A, Kucuk CH, Ellis J, Cronholm PF. Procedural Shortcomings With Near Point of Convergence Assessment May Lead to Inappropriate Prognosis of Concussion Injury in Athletes: Response. Am J Sports Med 2018; 46:NP66-NP68. [PMID: 30280935 DOI: 10.1177/0363546518800701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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8
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Yuan ZY, Yang J, Ma XW, Wang YY, Wang MW. Enriched environment elevates expression of growth associated protein-43 in the substantia nigra of SAMP8 mice. Neural Regen Res 2018; 13:1988-1994. [PMID: 30233074 PMCID: PMC6183044 DOI: 10.4103/1673-5374.239447] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
An enriched environment protects dopaminergic neurons from 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced neuronal injury, but the underlying mechanism for this is not clear. Growth associated protein-43 (GAP-43) is closely associated with neurite outgrowth and axon regeneration during neural development. We speculate that an enriched environment can reduce damage to dopaminergic neurons by affecting the expression of GAP-43. This study is designed to test this hypothesis. Three-month-old female senescence-accelerated mouse prone 8 (SAMP8) mice were housed for 3 months in an enriched environment or a standard environment. These mice were then subcutaneously injected in the abdomen with 14 mg/kg MPTP four times at 2-hour intervals. Morris water maze testing demonstrated that learning and memory abilities were better in the enriched environment group than in the standard environment group. Reverse-transcription polymerase chain reaction, immunohistochemistry and western blot assays showed that mRNA and protein levels of GAP-43 in the substantia nigra were higher after MPTP application in the enriched environment group compared with the standard environment group. These findings indicate that an enriched environment can increase GAP-43 expression in SAMP8 mice. The upregulation of GAP-43 may be a mechanism by which an enriched environment protects against MPTP-induced neuronal damage.
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Affiliation(s)
- Zhen-Yun Yuan
- The First Hospital of Hebei Medical University; Brain Aging and Cognitive Neuroscience Laboratory of Hebei Province, Shijiazhuang, Hebei Province, China
| | - Jie Yang
- The First Hospital of Hebei Medical University; Brain Aging and Cognitive Neuroscience Laboratory of Hebei Province, Shijiazhuang, Hebei Province, China
| | - Xiao-Wei Ma
- The First Hospital of Hebei Medical University; Brain Aging and Cognitive Neuroscience Laboratory of Hebei Province, Shijiazhuang, Hebei Province, China
| | - Yan-Yong Wang
- The First Hospital of Hebei Medical University; Brain Aging and Cognitive Neuroscience Laboratory of Hebei Province, Shijiazhuang, Hebei Province, China
| | - Ming-Wei Wang
- The First Hospital of Hebei Medical University; Brain Aging and Cognitive Neuroscience Laboratory of Hebei Province, Shijiazhuang, Hebei Province, China
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9
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Park E, Park K, Liu E, Jiang R, Zhang J, Baker AJ. Bone-Marrow–Derived Endothelial Progenitor Cell Treatment in a Model of Lateral Fluid Percussion Injury in Rats: Evaluation of Acute and Subacute Outcome Measures. J Neurotrauma 2017; 34:2801-2811. [DOI: 10.1089/neu.2016.4560] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Eugene Park
- Keenan Research Center in the Li Ka Shing Knowledge Institute at St. Michael's Hospital, Toronto, Ontario, Canada
| | - Katya Park
- Keenan Research Center in the Li Ka Shing Knowledge Institute at St. Michael's Hospital, Toronto, Ontario, Canada
| | - Elaine Liu
- Keenan Research Center in the Li Ka Shing Knowledge Institute at St. Michael's Hospital, Toronto, Ontario, Canada
| | - Rongcai Jiang
- Department of Neurosurgery, Tianjin Medical University, Tianjin Neurological Institute, Tianjin, China
| | - Jianning Zhang
- Department of Neurosurgery, Tianjin Medical University, Tianjin Neurological Institute, Tianjin, China
| | - Andrew J. Baker
- Keenan Research Center in the Li Ka Shing Knowledge Institute at St. Michael's Hospital, Toronto, Ontario, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
- Departments of Anesthesia & Surgery, University of Toronto, Toronto, Ontario, Canada
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10
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Tan S, Wang H, Xu X, Zhao L, Zhang J, Dong J, Yao B, Wang H, Zhou H, Gao Y, Peng R. Study on dose-dependent, frequency-dependent, and accumulative effects of 1.5 GHz and 2.856 GHz microwave on cognitive functions in Wistar rats. Sci Rep 2017; 7:10781. [PMID: 28883530 PMCID: PMC5589914 DOI: 10.1038/s41598-017-11420-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 08/24/2017] [Indexed: 12/18/2022] Open
Abstract
Many studies have revealed the cognitive decline induced by microwave radiation. However, the systematic study on dose-dependent, frequency-dependent and accumulative effects of microwave exposure at different frequencies was lacking. Here, we studied the relationship between the effects and the power and frequency of microwave and analyzed the accumulative effects of two different frequency microwaves with the same average power density. After microwave radiation, declines in spatial learning and memory and fluctuations of brain electric activities were found in the 10 mW/cm2 single frequency exposure groups and accumulative exposure groups. Meanwhile, morphological evidences in hippocampus also supported the cognitive dysfunction. Moreover, the decrease of Nissl contents in neurons indicated protein-based metabolic disorders in neurons. By detecting the key functional proteins of cholinergic transmitter metabolism, cytokines, energy metabolism and oxidative stress in the hippocampus, we found that microwave could lead to multiple metabolic disorders. Our results showed that microwave-induced cognitive decline was largely determined by its power rather than frequency. Injury effects were also found in accumulative exposure groups. We particularly concerned about the safety dose, injury effects and accumulative effects of microwaves, which might be very valuable in the future.
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Affiliation(s)
- Shengzhi Tan
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Hui Wang
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China.
| | - Xinping Xu
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Li Zhao
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Jing Zhang
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Ji Dong
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Binwei Yao
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Haoyu Wang
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Hongmei Zhou
- Division of Radiation Protection and Health Physics, Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Yabing Gao
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Ruiyun Peng
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, P. R. China.
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11
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Shan H, Chu Y, Chang P, Yang L, Wang Y, Zhu S, Zhang M, Tao L. Neuroprotective effects of hydrogen sulfide on sodium azide‑induced autophagic cell death in PC12 cells. Mol Med Rep 2017; 16:5938-5946. [PMID: 28849152 PMCID: PMC5865772 DOI: 10.3892/mmr.2017.7363] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 05/26/2017] [Indexed: 02/07/2023] Open
Abstract
Sodium azide (NaN3) is a chemical of rapidly growing commercial importance. It is very acutely toxic and inhibits cytochrome oxidase (COX) by binding irreversibly to the heme cofactor. A previous study from our group demonstrated that hydrogen sulfide (H2S), the third endogenous gaseous mediator identified, had protective effects against neuronal damage induced by traumatic brain injury (TBI). It is well‑known that TBI can reduce the activity of COX and have detrimental effects on the central nervous system metabolism. Therefore, in the present study, it was hypothesized that H2S may provide neuroprotection against NaN3 toxicity. The current results revealed that NaN3 treatment induced non‑apoptotic cell death, namely autophagic cell death, in PC12 cells. Expression of the endogenous H2S‑producing enzymes, cystathionine‑β‑synthase and 3‑mercaptopyruvate sulfurtransferase, decreased in a dose‑dependent manner following NaN3 treatment. Pretreatment with H2S markedly attenuated the NaN3‑induced cell viability loss and autophagic cell death in a dose‑dependent manner. The present study suggests that H2S‑based strategies may have future potential in the prevention and/or therapy of neuronal damage following NaN3 exposure.
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Affiliation(s)
- Haiyan Shan
- Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, Shanghai 200063, P.R. China
| | - Yang Chu
- Institute of Forensic Sciences, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Pan Chang
- Central Laboratory, Second Affiliated Hospital of Xi'an Medical College, Xi'an, Shaanxi 710038, P.R. China
| | - Lijun Yang
- Institute of Forensic Sciences, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Yi Wang
- Institute of Forensic Sciences, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Shaohua Zhu
- Institute of Forensic Sciences, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Mingyang Zhang
- Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, Shanghai 200063, P.R. China
| | - Luyang Tao
- Institute of Forensic Sciences, Soochow University, Suzhou, Jiangsu 215123, P.R. China
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12
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Exendin-4 attenuates blast traumatic brain injury induced cognitive impairments, losses of synaptophysin and in vitro TBI-induced hippocampal cellular degeneration. Sci Rep 2017. [PMID: 28623327 PMCID: PMC5473835 DOI: 10.1038/s41598-017-03792-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Mild blast traumatic brain injury (B-TBI) induced lasting cognitive impairments in novel object recognition and less severe deficits in Y-maze behaviors. B-TBI significantly reduced the levels of synaptophysin (SYP) protein staining in cortical (CTX) and hippocampal (HIPP) tissues. Treatment with exendin-4 (Ex-4) delivered by subcutaneous micro-osmotic pumps 48 hours prior to or 2 hours immediately after B-TBI prevented the induction of both cognitive deficits and B-TBI induced changes in SYP staining. The effects of a series of biaxial stretch injuries (BSI) on a neuronal derived cell line, HT22 cells, were assessed in an in vitro model of TBI. Biaxial stretch damage induced shrunken neurites and cell death. Treatment of HT22 cultures with Ex-4 (25 to 100 nM), prior to injury, attenuated the cytotoxic effects of BSI and preserved neurite length similar to sham treated cells. These data imply that treatment with Ex-4 may represent a viable option for the management of secondary events triggered by blast-induced, mild traumatic brain injury that is commonly observed in militarized zones.
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Liu X, Qiu J, Alcon S, Hashim J, Meehan WP, Mannix R. Environmental Enrichment Mitigates Deficits after Repetitive Mild Traumatic Brain Injury. J Neurotrauma 2017; 34:2445-2455. [PMID: 28376667 DOI: 10.1089/neu.2016.4823] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Although environmental enrichment has been shown to improve functional and histologic outcomes in pre-clinical moderate-to-severe traumatic brain injury (TBI), there are a paucity of pre-clinical data regarding enrichment strategies in the setting of repetitive mild traumatic brain injury (rmTBI). Given the vast numbers of athletes and those in the military who sustain rmTBI, the mounting evidence of the long-term and progressive sequelae of rmTBI, and the lack of targeted therapies to mitigate these sequelae, successful enrichment interventions in rmTBI could have large public health significance. Here, we evaluated enrichment strategies in an established pre-clinical rmTBI model. Seventy-one male C57BL/6 mice were randomized to two different housing conditions, environmental enrichment (EE) or normal condition (NC), then subjected to rmTBI injury (seven injuries in 9 days) or sham injury (anesthesia only). Functional outcomes in all four groups (NC-TBI, EE-TBI, NC-sham, and EE-sham) were assessed by motor, exploratory/anxiety, and mnemonic behavioral tests. At the synaptic level, N-methyl d-aspartate receptor (NMDAR) subunit expression of phosphorylated glutamate receptor 1 (GluR1), phosphorylated Ca2+/calmodulin-dependent protein kinase II (CaMKII), and calpain were evaluated by western blot. Compared to injured NC-TBI mice, EE-TBI mice had improved memory and decreased anxiety and exploratory activity post-injury. Treatment with enrichment also corresponded to normal NMDAR subunit expression, decreased GluR1 phosphorylation, decreased phosphorylated CaMKII, and normal calpain expression post-rmTBI. These data suggest that enrichment strategies may improve functional outcomes and mitigate synaptic changes post-rmTBI. Given that enrichment strategies are feasible in the clinical setting, particularly for athletes and soldiers for whom the risk of repetitive injury is greatest, these data suggest that clinical trials may be warranted.
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Affiliation(s)
- Xixia Liu
- 1 People's Hospital of Guangxi Zhuang Autonomous Region , Nanning, People's Republic of China
| | - Jianhua Qiu
- 2 Division of Emergency Medicine, Boston Children's Hospital , Boston, Massachusetts.,3 Harvard Medical School , Boston, Massachusetts
| | - Sasha Alcon
- 2 Division of Emergency Medicine, Boston Children's Hospital , Boston, Massachusetts
| | - Jumana Hashim
- 2 Division of Emergency Medicine, Boston Children's Hospital , Boston, Massachusetts
| | - William P Meehan
- 2 Division of Emergency Medicine, Boston Children's Hospital , Boston, Massachusetts.,3 Harvard Medical School , Boston, Massachusetts.,4 Sports Concussion Clinic , Division of Sports Medicine, Boston, Massachusetts.,5 The Micheli Center for Sports Injury Prevention , Waltham, Massachusetts
| | - Rebekah Mannix
- 2 Division of Emergency Medicine, Boston Children's Hospital , Boston, Massachusetts.,3 Harvard Medical School , Boston, Massachusetts
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Wearick-Silva LE, Marshall P, Viola TW, Centeno-Silva A, de Azeredo LA, Orso R, Li X, Donadio MV, Bredy TW, Grassi-Oliveira R. Running during adolescence rescues a maternal separation-induced memory impairment in female mice: Potential role of differential exon-specific BDNF expression. Dev Psychobiol 2016; 59:268-274. [PMID: 27807856 DOI: 10.1002/dev.21487] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 10/19/2016] [Indexed: 12/19/2022]
Abstract
Exposure to early life stress has been associated with memory impairments related to changes in brain-derived neurotrophic factor (BDNF) signaling. However, the potential impact of physical exercise to reverse these effects of maternal separation has been under investigated. Mice were subjected to maternal separation during the first 2 weeks of life and then exposed to a 3-week running protocol during adolescence. The spontaneous object recognition task was performed during adolescence followed by analysis of hippocampal expression of exons I, IV, and IX of the BDNF gene. As expected, maternal separation impaired recognition memory and this effect was reversed by exercise. In addition, running increased BDNF exon I expression, but decreased expression of BDNF exon IV in all groups, while exon IX expression increased only in MS animals exposed to exercise. Our data suggest that memory deficits can be attenuated by exercise and specific transcripts of the BDNF gene are dynamically regulated following both MS and exercise.
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Affiliation(s)
- Luis Eduardo Wearick-Silva
- Graduate Program in Pediatrics and Child Health, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.,Developmental Cognitive Neuroscience Laboratory (DCNL) Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Paul Marshall
- Department of Neurobiology and Behavior, University of California - Irvine, Irvine, California
| | - Thiago Wendt Viola
- Graduate Program in Pediatrics and Child Health, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.,Developmental Cognitive Neuroscience Laboratory (DCNL) Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Anderson Centeno-Silva
- Graduate Program in Pediatrics and Child Health, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.,Developmental Cognitive Neuroscience Laboratory (DCNL) Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Lucas Araújo de Azeredo
- Graduate Program in Pediatrics and Child Health, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.,Developmental Cognitive Neuroscience Laboratory (DCNL) Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Rodrigo Orso
- Graduate Program in Pediatrics and Child Health, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.,Developmental Cognitive Neuroscience Laboratory (DCNL) Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Xiang Li
- Department of Neurobiology and Behavior, University of California - Irvine, Irvine, California
| | - Márcio V Donadio
- Graduate Program in Pediatrics and Child Health, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Timothy W Bredy
- Department of Neurobiology and Behavior, University of California - Irvine, Irvine, California
| | - Rodrigo Grassi-Oliveira
- Graduate Program in Pediatrics and Child Health, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.,Developmental Cognitive Neuroscience Laboratory (DCNL) Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
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15
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Caruso JP, Susick LL, Charlton JL, Henson EL, Conti AC. Region-specific disruption of synapsin phosphorylation following ethanol administration in brain-injured mice. Brain Circ 2016; 2:183-188. [PMID: 30276296 PMCID: PMC6126228 DOI: 10.4103/2394-8108.195284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/13/2016] [Accepted: 07/18/2016] [Indexed: 11/11/2022] Open
Abstract
Introduction: Civilians and military personnel develop a range of physical and psychosocial impairments following traumatic brain injury (TBI), including alcohol abuse. As a consequence, increased rates of alcohol misuse magnify TBI-induced pathologies and impede rehabilitation efforts. Therefore, a developed understanding of the mechanisms that foster susceptibility of the injured brain to alcohol sensitivity and the response of the injured brain to alcohol is imperative for the treatment of TBI patients. Alcohol sensitivity has been demonstrated to be increased following experimental TBI and, in additional studies, regulated by presynaptic vesicle release mechanisms, including synapsin phosphorylation. Materials and Methods: Mice were exposed to controlled midline impact of the intact skull and assessed for cortical, hippocampal, and striatal expression of phosphorylated synapsin I and II in response to high-dose ethanol exposure administered 14 days following injury, a time point at which injured mice demonstrate increased sedation after ethanol exposure. Results and Discussion: Immunoblot quantitation revealed that TBI alone, compared to sham controls, significantly increased phosphorylated synapsin I and II protein expression in the striatum. In sham controls, ethanol administration significantly increased phosphorylated synapsin I and II protein expression compared to saline-treated sham controls; however, no significant increase in ethanol-induced phosphorylated synapsin I and II protein expression was observed in the striatum of injured mice compared to saline-treated TBI controls. A similar expression pattern was observed in the cortex although restricted to increases in phosphorylated synapsin II. Conclusion: These data show that increased phosphorylated synapsin expression in the injured striatum may reflect a compensatory neuroplastic response to TBI which is proposed to occur as a result of a compromised presynaptic response of the injured brain to high-dose ethanol. These results offer a mechanistic basis for the altered ethanol sensitivity observed following experimental TBI and contribute to our understanding of alcohol action in the injured brain.
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Affiliation(s)
- James P Caruso
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Laura L Susick
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Jennifer L Charlton
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Emily L Henson
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Alana C Conti
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
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16
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Abstract
PURPOSE OF REVIEW There is an urgent need for effective therapies to restore neurologic function and decrease disability following traumatic brain injury (TBI). Here, emerging findings on the mechanisms of post-TBI neural repair and regeneration, as well as therapeutic implications, are selectively reviewed. RECENT FINDINGS Recent discoveries include the characterization of the inhibitory signaling systems within the injury site, postinjury stem cell niche activation, the role of serotonin signaling in repair, and environment enrichment. A potentially transformative finding has been the identification of exosomes, nano-sized extracellular vesicles which have key roles in cell signaling, and might serve as novel biomarkers and as vehicles for targeted delivery of repair-inducing molecules. SUMMARY In the experimental setting, post-TBI repair can be promoted by modulation of inhibitory signaling, neurotrophic factor administration, and amplified serotonin signaling; additional strategies include mobilization of endogenous stem cell populations, exogenous cell-based therapies, and environmental enhancement. Feasibility, safety, and efficacy of these approaches need further investigation in humans. Studies are also needed to evaluate biomarkers based on molecular traces of neural repair and regeneration, which could transform prognostic and predictive modeling of post-TBI recovery trajectories.
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17
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The interplay between neuropathology and activity based rehabilitation after traumatic brain injury. Brain Res 2016; 1640:152-163. [DOI: 10.1016/j.brainres.2016.01.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 01/08/2016] [Accepted: 01/09/2016] [Indexed: 02/07/2023]
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18
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da Silva Fiorin F, de Oliveira Ferreira AP, Ribeiro LR, Silva LFA, de Castro MRT, da Silva LRH, da Silveira MEP, Zemolin APP, Dobrachinski F, Marchesan de Oliveira S, Franco JL, Soares FA, Furian AF, Oliveira MS, Fighera MR, Freire Royes LF. The Impact of Previous Physical Training on Redox Signaling after Traumatic Brain Injury in Rats: A Behavioral and Neurochemical Approach. J Neurotrauma 2016; 33:1317-30. [PMID: 26651029 DOI: 10.1089/neu.2015.4068] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Throughout the world, traumatic brain injury (TBI) is one of the major causes of disability, which can include deficits in motor function and memory, as well as acquired epilepsy. Although some studies have shown the beneficial effects of physical exercise after TBI, the prophylactic effects are poorly understood. In the current study, we demonstrated that TBI induced by fluid percussion injury (FPI) in adult male Wistar rats caused early motor impairment (24 h), learning deficit (15 days), spontaneous epileptiform events (SEE), and hilar cell loss in the hippocampus (35 days) after TBI. The hippocampal alterations in the redox status, which were characterized by dichlorofluorescein diacetate oxidation and superoxide dismutase (SOD) activity inhibition, led to the impairment of protein function (Na(+), K(+)-adenosine triphosphatase [ATPase] activity inhibition) and glutamate uptake inhibition 24 h after neuronal injury. The molecular adaptations elicited by previous swim training protected against the glutamate uptake inhibition, oxidative stress, and inhibition of selected targets for free radicals (e.g., Na(+), K(+)-ATPase) 24 h after neuronal injury. Our data indicate that this protocol of exercise protected against FPI-induced motor impairment, learning deficits, and SEE. In addition, the enhancement of the hippocampal phosphorylated nuclear factor erythroid 2-related factor (P-Nrf2)/Nrf2, heat shock protein 70, and brain-derived neurotrophic factor immune content in the trained injured rats suggests that protein expression modulation associated with an antioxidant defense elicited by previous physical exercise can prevent toxicity induced by TBI, which is characterized by cell loss in the dentate gyrus hilus at 35 days after TBI. Therefore, this report suggests that previous physical exercise can decrease lesion progression in this model of brain damage.
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Affiliation(s)
- Fernando da Silva Fiorin
- 1 Laboratório de Bioquímica do Exercício, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | | | - Leandro R Ribeiro
- 1 Laboratório de Bioquímica do Exercício, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Luiz F A Silva
- 1 Laboratório de Bioquímica do Exercício, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Mauro R T de Castro
- 1 Laboratório de Bioquímica do Exercício, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Luís R H da Silva
- 1 Laboratório de Bioquímica do Exercício, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Mauro E P da Silveira
- 1 Laboratório de Bioquímica do Exercício, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Ana P P Zemolin
- 2 Programa de Pós-Graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Fernando Dobrachinski
- 2 Programa de Pós-Graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Sara Marchesan de Oliveira
- 2 Programa de Pós-Graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Jeferson L Franco
- 2 Programa de Pós-Graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Félix A Soares
- 2 Programa de Pós-Graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Ana F Furian
- 3 Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Mauro S Oliveira
- 3 Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Michele R Fighera
- 1 Laboratório de Bioquímica do Exercício, Universidade Federal de Santa Maria , Santa Maria, Brazil .,2 Programa de Pós-Graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria , Santa Maria, Brazil .,3 Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria , Santa Maria, Brazil
| | - Luiz F Freire Royes
- 1 Laboratório de Bioquímica do Exercício, Universidade Federal de Santa Maria , Santa Maria, Brazil .,2 Programa de Pós-Graduação em Ciências Biológicas, Bioquímica Toxicológica, Universidade Federal de Santa Maria , Santa Maria, Brazil .,3 Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria , Santa Maria, Brazil
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19
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Leddy J, Hinds A, Sirica D, Willer B. The Role of Controlled Exercise in Concussion Management. PM R 2016; 8:S91-S100. [PMID: 26972272 DOI: 10.1016/j.pmrj.2015.10.017] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 10/06/2015] [Accepted: 10/08/2015] [Indexed: 11/30/2022]
Affiliation(s)
- John Leddy
- UBMD Orthopaedics and Sports Medicine, SUNY Buffalo, 160 Farber Hall, Buffalo, NY 14214
| | - Andrea Hinds
- Department of Psychiatry, SUNY Buffalo, Buffalo, NY
| | - Dan Sirica
- University at Buffalo School of Medicine and Biomedical Sciences, Buffalo, NY
| | - Barry Willer
- Department of Psychiatry, SUNY Buffalo, Buffalo, NY
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20
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Martín-Aragón S, Villar Á, Benedí J. Age-dependent effects of esculetin on mood-related behavior and cognition from stressed mice are associated with restoring brain antioxidant status. Prog Neuropsychopharmacol Biol Psychiatry 2016; 65:1-16. [PMID: 26290950 DOI: 10.1016/j.pnpbp.2015.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 08/06/2015] [Accepted: 08/12/2015] [Indexed: 12/20/2022]
Abstract
Dietary antioxidants might exert an important role in the aging process by relieving oxidative damage, a likely cause of age-associated brain dysfunctions. This study aims to investigate the influence of esculetin (6,7-dihydroxycoumarin), a naturally occurring antioxidant in the diet, on mood-related behaviors and cognitive function and its relation with age and brain oxidative damage. Behavioral tests were employed in 11-, 17- and 22-month-old male C57BL/6J mice upon an oral 35day-esculetin treatment (25mg/kg). Activity of antioxidant enzymes, GSH and GSSG levels, GSH/GSSG ratio, and mitochondrial function were analyzed in brain cortex at the end of treatment in order to assess the oxidative status related to mouse behavior. Esculetin treatment attenuated the increased immobility time and enhanced the diminished climbing time in the forced swim task elicited by acute restraint stress (ARS) in the 11- and 17-month-old mice versus their counterpart controls. Furthermore, ARS caused an impairment of contextual memory in the step-through passive avoidance both in mature adult and aged mice which was partially reversed by esculetin only in the 11-month-old mice. Esculetin was effective to prevent the ARS-induced oxidative stress mostly in mature adult mice by restoring antioxidant enzyme activities, augmenting the GSH/GSSG ratio and increasing cytochrome c oxidase (COX) activity in cortex. Modulation of the mood-related behavior and cognitive function upon esculetin treatment in a mouse model of ARS depends on age and is partly due to the enhancement of redox status and levels of COX activity in cortex.
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Affiliation(s)
- Sagrario Martín-Aragón
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
| | - Ángel Villar
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Juana Benedí
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
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21
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Liu J, Dan Q, Zhao N, Li J, Li J, Chang Q, Su P, Cen J. Functional implication of synaptophysin upregulation with traumatic brain injury adult rats. IBRAIN 2016. [DOI: 10.1002/j.2769-2795.2016.tb00005.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Jun Liu
- Department of NeurosurgeryKunming First People’s Hospital KunmingYunnanChina
| | - Qi‐Qin Dan
- Institute of Neurological Disease, West China Hospital, Sichuan UniversityChengduChina
| | - Nan Zhao
- Department of NeurosurgeryKunming First People’s Hospital KunmingYunnanChina
| | - Jun‐Yan Li
- Department of NeurosurgeryKunming First People’s Hospital KunmingYunnanChina
| | - Jin Li
- Department of NeurosurgeryKunming First People’s Hospital KunmingYunnanChina
| | - Qian Chang
- Department of NeurosurgeryKunming First People’s Hospital KunmingYunnanChina
| | - Ping Su
- Department of NeurosurgeryKunming First People’s Hospital KunmingYunnanChina
| | - Jiang‐Chang Cen
- Department of NeurosurgeryKunming First People’s Hospital KunmingYunnanChina
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22
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Taylor JM, Montgomery MH, Gregory EJ, Berman NEJ. Exercise preconditioning improves traumatic brain injury outcomes. Brain Res 2015; 1622:414-29. [PMID: 26165153 DOI: 10.1016/j.brainres.2015.07.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 07/03/2015] [Accepted: 07/04/2015] [Indexed: 12/15/2022]
Abstract
PURPOSE To determine whether 6 weeks of exercise performed prior to traumatic brain injury (TBI) could improve post-TBI behavioral outcomes in mice, and if exercise increases neuroprotective molecules (vascular endothelial growth factor-A [VEGF-A], erythropoietin [EPO], and heme oxygenase-1 [HO-1]) in brain regions responsible for movement (sensorimotor cortex) and memory (hippocampus). METHODS 120 mice were randomly assigned to one of four groups: (1) no exercise+no TBI (NOEX-NOTBI [n=30]), (2) no exercise+TBI (NOEX-TBI [n=30]), (3) exercise+no TBI (EX-NOTBI [n=30]), and (4) exercise+TBI (EX-TBI [n=30]). The gridwalk task and radial arm water maze were used to evaluate sensorimotor and cognitive function, respectively. Quantitative real time polymerase chain reaction and immunostaining were performed to investigate VEGF-A, EPO, and HO-1 mRNA and protein expression in the right cerebral cortex and ipsilateral hippocampus. RESULTS EX-TBI mice displayed reduced post-TBI sensorimotor and cognitive deficits when compared to NOEX-TBI mice. EX-NOTBI and EX-TBI mice showed elevated VEGF-A and EPO mRNA in the cortex and hippocampus, and increased VEGF-A and EPO staining of sensorimotor cortex neurons 1 day post-TBI and/or post-exercise. EX-TBI mice also exhibited increased VEGF-A staining of hippocampal neurons 1 day post-TBI/post-exercise. NOEX-TBI mice demonstrated increased HO-1 mRNA in the cortex (3 days post-TBI) and hippocampus (3 and 7 days post-TBI), but HO-1 was not increased in mice that exercised. CONCLUSIONS Improved TBI outcomes following exercise preconditioning are associated with increased expression of specific neuroprotective genes and proteins (VEGF-A and EPO, but not HO-1) in the brain.
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Affiliation(s)
- Jordan M Taylor
- Department of Physical Therapy and Rehabilitation Science, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Mitchell H Montgomery
- Department of Physical Therapy and Rehabilitation Science, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Eugene J Gregory
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Nancy E J Berman
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA.
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Zhao Z, Sabirzhanov B, Wu J, Faden AI, Stoica BA. Voluntary Exercise Preconditioning Activates Multiple Antiapoptotic Mechanisms and Improves Neurological Recovery after Experimental Traumatic Brain Injury. J Neurotrauma 2015; 32:1347-60. [PMID: 25419789 DOI: 10.1089/neu.2014.3739] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Physical activity can attenuate neuronal loss, reduce neuroinflammation, and facilitate recovery after brain injury. However, little is known about the mechanisms of exercise-induced neuroprotection after traumatic brain injury (TBI) or its modulation of post-traumatic neuronal cell death. Voluntary exercise, using a running wheel, was conducted for 4 weeks immediately preceding (preconditioning) moderate-level controlled cortical impact (CCI), a well-established experimental TBI model in mice. Compared to nonexercised controls, exercise preconditioning (pre-exercise) improved recovery of sensorimotor performance in the beam walk task, as well as cognitive/affective functions in the Morris water maze, novel object recognition, and tail-suspension tests. Further, pre-exercise reduced lesion size, attenuated neuronal loss in the hippocampus, cortex, and thalamus, and decreased microglial activation in the cortex. In addition, exercise preconditioning activated the brain-derived neurotrophic factor pathway before trauma and amplified the injury-dependent increase in heat shock protein 70 expression, thus attenuating key apoptotic pathways. The latter include reduction in CCI-induced up-regulation of proapoptotic B-cell lymphoma 2 (Bcl-2)-homology 3-only Bcl-2 family molecules (Bid, Puma), decreased mitochondria permeabilization with attenuated release of cytochrome c and apoptosis-inducing factor (AIF), reduced AIF translocation to the nucleus, and attenuated caspase activation. Given these neuroprotective actions, voluntary physical exercise may serve to limit the consequences of TBI.
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Affiliation(s)
- Zaorui Zhao
- Department of Anesthesiology and Center for Shock, Trauma, and Anesthesiology Research (STAR), University of Maryland School of Medicine , Baltimore, Maryland
| | - Boris Sabirzhanov
- Department of Anesthesiology and Center for Shock, Trauma, and Anesthesiology Research (STAR), University of Maryland School of Medicine , Baltimore, Maryland
| | - Junfang Wu
- Department of Anesthesiology and Center for Shock, Trauma, and Anesthesiology Research (STAR), University of Maryland School of Medicine , Baltimore, Maryland
| | - Alan I Faden
- Department of Anesthesiology and Center for Shock, Trauma, and Anesthesiology Research (STAR), University of Maryland School of Medicine , Baltimore, Maryland
| | - Bogdan A Stoica
- Department of Anesthesiology and Center for Shock, Trauma, and Anesthesiology Research (STAR), University of Maryland School of Medicine , Baltimore, Maryland
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Byun HM, Benachour N, Zalko D, Frisardi MC, Colicino E, Takser L, Baccarelli AA. Epigenetic effects of low perinatal doses of flame retardant BDE-47 on mitochondrial and nuclear genes in rat offspring. Toxicology 2014; 328:152-9. [PMID: 25533936 DOI: 10.1016/j.tox.2014.12.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 12/16/2014] [Accepted: 12/18/2014] [Indexed: 01/26/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) are known endocrine disrupting chemicals used commonly as flame retardants in everything from electronics to furniture. Exposure to PBDEs during early development has been linked to neurodevelopmental delays. Despite mounting evidence of neurological harm from PBDE exposure, the molecular mechanisms underlying these effects on brain function remain unknown. We examined the effects of perinatal exposure to BDE-47, the most biologically active and prevalent BDE congener in North America, on epigenetic patterns in the frontal lobe of Wistar rats. Dams were gavaged with BDE-47 (0.002 and 0.2mg/kg body weight) at gestation days 9 and 16, and postnatal days 1, 8, and 15. Frontal lobes from offspring at postnatal day 41 were collected to measure 5-methylcytosine (5mC) in mitochondrial cytochrome c oxidase genes (Mt-co1, Mt-co2, and Mt-co3), global nuclear 5-hydroxymethylcytosine (5hmC) content, 5mC in repetitive elements L1Rn, and 5mC in nuclear genes (Bdnf, Crhr1, Mc2r, Nr3c1, and Snca) related to behavioral and brain functions in the nuclear genome. We observed a significant decrease in %5mC in Mt-co2 (difference from control=-0.68%, p=0.01 at the 0.2mg/kg BDE-47). 5mC in repetitive elements L1Rn decreased at 0.002 mg/kg BDE-47 (difference=-1.23%, p=0.02). Decreased nuclear 5mC was observed in Bdnf and Nr3c1 in BDE-47 exposed rats. However, we did not observe significant effects of PBDE toxicity on DNA methylation patterns for the majority of genes in the brain.
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Affiliation(s)
- Hyang-Min Byun
- Laboratory of Environmental Epigenetics, Exposure Epidemiology and Risk Program, Harvard School of Public Health, Boston, MA 02115, USA.
| | - Nora Benachour
- Département Pédiatrie, Faculté de Médecine, Université de Sherbrooke, QC J1H 5N4, Canada.
| | - Daniel Zalko
- Institut National de la Recherche Agronomique, UMR1331, TOXALIM (Research Centre in Food Toxicology), Toulouse, France.
| | - Maria Chiara Frisardi
- Department of Statistics, University of Milano-Bicocca, Milan 20126, Italy; Department of Environmental Health, Harvard School of Public Health, Boston, MA 02115, USA.
| | - Elena Colicino
- Department of Environmental Health, Harvard School of Public Health, Boston, MA 02115, USA.
| | - Larissa Takser
- Département Pédiatrie, Faculté de Médecine, Université de Sherbrooke, QC J1H 5N4, Canada.
| | - Andrea A Baccarelli
- Laboratory of Environmental Epigenetics, Exposure Epidemiology and Risk Program, Harvard School of Public Health, Boston, MA 02115, USA.
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