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Vaibhav K, Gulhane M, Ahluwalia P, Kumar M, Ahluwalia M, Rafiq AM, Amble V, Zabala MG, Miller JB, Goldman L, Mondal AK, Deak F, Kolhe R, Arbab AS, Vale FL. Single episode of moderate to severe traumatic brain injury leads to chronic neurological deficits and Alzheimer's-like pathological dementia. GeroScience 2024:10.1007/s11357-024-01183-3. [PMID: 38733547 DOI: 10.1007/s11357-024-01183-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 04/27/2024] [Indexed: 05/13/2024] Open
Abstract
Traumatic brain injury (TBI) is one of the foremost causes of disability and mortality globally. While the scientific and medical emphasis is to save lives and avoid disability during acute period of injury, a severe health problem can manifest years after injury. For instance, TBI increases the risk of cognitive impairment in the elderly. Remote TBI history was reported to be a cause of the accelerated clinical trajectory of Alzheimer's disease-related dementia (ADRD) resulting in earlier onset of cognitive impairment and increased AD-associated pathological markers like greater amyloid deposition and cortical thinning. It is not well understood whether a single TBI event may increase the risk of dementia. Moreover, the cellular signaling pathways remain elusive for the chronic effects of TBI on cognition. We have hypothesized that a single TBI induces sustained neuroinflammation and disrupts cellular communication in a way that results later in ADRD pathology. To test this, we induced TBI in young adult CD1 mice and assessed the behavioral outcomes after 11 months followed by pathological, histological, transcriptomic, and MRI assessment. On MRI scans, these mice showed significant loss of tissue, reduced CBF, and higher white matter injury compared to sham mice. We found these brains showed progressive atrophy, markers of ADRD, sustained astrogliosis, loss of neuronal plasticity, and growth factors even after 1-year post-TBI. Because of progressive neurodegeneration, these mice had motor deficits, showed cognitive impairments, and wandered randomly in open field. We, therefore, conclude that progressive pathology after adulthood TBI leads to neurodegenerative conditions such as ADRD and impairs neuronal functions.
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Affiliation(s)
- Kumar Vaibhav
- Brain Injury, Senescence, and Translational Neuroscience Lab, Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA.
- Transdisciplinary Research Initiative in Inflammaging and Brain Aging (TRIBA), Augusta University, Augusta, GA, USA.
| | - Mayuri Gulhane
- Brain Injury, Senescence, and Translational Neuroscience Lab, Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Pankaj Ahluwalia
- Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Manish Kumar
- Brain Injury, Senescence, and Translational Neuroscience Lab, Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Meenakshi Ahluwalia
- Brain Injury, Senescence, and Translational Neuroscience Lab, Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
- Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA, USA
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Ashiq M Rafiq
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Vibha Amble
- Center for Undergraduate Research Studies, Augusta University, Augusta, GA, USA
| | - Manuela G Zabala
- Center for Undergraduate Research Studies, Augusta University, Augusta, GA, USA
| | - Jacob B Miller
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
- The Graduate School, Augusta University, Augusta, GA, USA
| | - Liam Goldman
- Brain Injury, Senescence, and Translational Neuroscience Lab, Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Ashis K Mondal
- Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Ferenc Deak
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Ravindra Kolhe
- Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Ali S Arbab
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Fernando L Vale
- Brain Injury, Senescence, and Translational Neuroscience Lab, Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
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2
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Koochaki F, Najafizadeh L. A Siamese Convolutional Neural Network for Identifying Mild Traumatic Brain Injury and Predicting Recovery. IEEE Trans Neural Syst Rehabil Eng 2024; 32:1779-1786. [PMID: 38635385 DOI: 10.1109/tnsre.2024.3391067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Timely diagnosis of mild traumatic brain injury (mTBI) remains challenging due to the rapid recovery of acute symptoms and the absence of evidence of injury in static neuroimaging scans. Furthermore, while longitudinal tracking of mTBI is essential in understanding how the diseases progresses/regresses over time for enhancing personalized patient care, a standardized approach for this purpose is not yet available. Recent functional neuroimaging studies have provided evidence of brain function alterations following mTBI, suggesting mTBI-detection models can be built based on these changes. Most of these models, however, rely on manual feature engineering, but the optimal set of features for detecting mTBI may be unknown. Data-driven approaches, on the other hand, may uncover hidden relationships in an automated manner, making them suitable for the problem of mTBI detection. This paper presents a data-driven framework based on Siamese Convolutional Neural Network (SCNN) to detect mTBI and to monitor the recovery state from mTBI over time. The proposed framework is tested on the cortical images of Thy1-GCaMP6s mice, obtained via widefield calcium imaging, acquired in a longitudinal study. Results show that the proposed model achieves a classification accuracy of 96.5%. To track the state of the injured brain over time, a reference distance map is constructed, which together with the SCNN model, are employed to assess the recovery state in subsequent sessions after injury, revealing that the recovery progress varies among subjects. The promising results of this work suggest that a similar approach could be potentially applicable for monitoring recovery from mTBI, in humans.
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Pszczołowska M, Walczak K, Miśków W, Antosz K, Batko J, Kurpas D, Leszek J. Chronic Traumatic Encephalopathy as the Course of Alzheimer's Disease. Int J Mol Sci 2024; 25:4639. [PMID: 38731858 PMCID: PMC11083609 DOI: 10.3390/ijms25094639] [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: 03/19/2024] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
This editorial investigates chronic traumatic encephalopathy (CTE) as a course of Alzheimer's disease (AD). CTE is a debilitating neurodegenerative disease that is the result of repeated mild traumatic brain injury (TBI). Many epidemiological studies show that experiencing a TBI in early or middle life is associated with an increased risk of dementia later in life. Chronic traumatic encephalopathy (CTE) and Alzheimer's disease (AD) present a series of similar neuropathological features that were investigated in this work like recombinant tau into filaments or the accumulation and aggregation of Aβ protein. However, these two conditions differ from each other in brain-blood barrier damage. The purpose of this review was to evaluate information about CTE and AD from various articles, focusing especially on new therapeutic possibilities for the improvement in cognitive skills.
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Affiliation(s)
- Magdalena Pszczołowska
- Faculty of Medicine, Wroclaw Medical University, Ludwika Pasteura 1, 50-367 Wrocław, Poland; (M.P.)
| | - Kamil Walczak
- Faculty of Medicine, Wroclaw Medical University, Ludwika Pasteura 1, 50-367 Wrocław, Poland; (M.P.)
| | - Weronika Miśków
- Faculty of Medicine, Wroclaw Medical University, Ludwika Pasteura 1, 50-367 Wrocław, Poland; (M.P.)
| | - Katarzyna Antosz
- Faculty of Medicine, Wroclaw Medical University, Ludwika Pasteura 1, 50-367 Wrocław, Poland; (M.P.)
| | - Joanna Batko
- Faculty of Medicine, Wroclaw Medical University, Ludwika Pasteura 1, 50-367 Wrocław, Poland; (M.P.)
| | - Donata Kurpas
- Faculty of Health Sciences, Wroclaw Medical University, Ul. Kazimierza Bartla 5, 51-618 Wrocław, Poland
| | - Jerzy Leszek
- Clinic of Psychiatry, Department of Psychiatry, Wroclaw Medical University, Ludwika Pasteura 10, 50-367 Wrocław, Poland
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Elder GA, Gama Sosa MA, De Gasperi R, Perez Garcia G, Perez GM, Abutarboush R, Kawoos U, Zhu CW, Janssen WGM, Stone JR, Hof PR, Cook DG, Ahlers ST. The Neurovascular Unit as a Locus of Injury in Low-Level Blast-Induced Neurotrauma. Int J Mol Sci 2024; 25:1150. [PMID: 38256223 PMCID: PMC10816929 DOI: 10.3390/ijms25021150] [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: 12/12/2023] [Revised: 01/11/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Blast-induced neurotrauma has received much attention over the past decade. Vascular injury occurs early following blast exposure. Indeed, in animal models that approximate human mild traumatic brain injury or subclinical blast exposure, vascular pathology can occur in the presence of a normal neuropil, suggesting that the vasculature is particularly vulnerable. Brain endothelial cells and their supporting glial and neuronal elements constitute a neurovascular unit (NVU). Blast injury disrupts gliovascular and neurovascular connections in addition to damaging endothelial cells, basal laminae, smooth muscle cells, and pericytes as well as causing extracellular matrix reorganization. Perivascular pathology becomes associated with phospho-tau accumulation and chronic perivascular inflammation. Disruption of the NVU should impact activity-dependent regulation of cerebral blood flow, blood-brain barrier permeability, and glymphatic flow. Here, we review work in an animal model of low-level blast injury that we have been studying for over a decade. We review work supporting the NVU as a locus of low-level blast injury. We integrate our findings with those from other laboratories studying similar models that collectively suggest that damage to astrocytes and other perivascular cells as well as chronic immune activation play a role in the persistent neurobehavioral changes that follow blast injury.
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Affiliation(s)
- Gregory A. Elder
- Neurology Service, James J. Peters Department of Veterans Affairs Medical Center, 130 West Kingsbridge Road, Bronx, NY 10468, USA
- Department of Neurology, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, New York, NY 10029, USA;
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, New York, NY 10029, USA; (M.A.G.S.); (R.D.G.)
- Mount Sinai Alzheimer’s Disease Research Center and the Ronald M. Loeb Center for Alzheimer’s Disease, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (C.W.Z.); (P.R.H.)
| | - Miguel A. Gama Sosa
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, New York, NY 10029, USA; (M.A.G.S.); (R.D.G.)
- General Medical Research Service, James J. Peters Department of Veterans Affairs Medical Center, Bronx, NY 10468, USA
| | - Rita De Gasperi
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, New York, NY 10029, USA; (M.A.G.S.); (R.D.G.)
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, 130 West Kingsbridge Road, Bronx, NY 10468, USA;
| | - Georgina Perez Garcia
- Department of Neurology, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, New York, NY 10029, USA;
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, 130 West Kingsbridge Road, Bronx, NY 10468, USA;
| | - Gissel M. Perez
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, 130 West Kingsbridge Road, Bronx, NY 10468, USA;
| | - Rania Abutarboush
- Department of Neurotrauma, Operational and Undersea Medicine Directorate, Naval Medical ResearchCommand, 503 Robert Grant Avenue, Silver Spring, MD 20910, USA; (R.A.); (U.K.); (S.T.A.)
- The Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., Bethesda, MD 20817, USA
| | - Usmah Kawoos
- Department of Neurotrauma, Operational and Undersea Medicine Directorate, Naval Medical ResearchCommand, 503 Robert Grant Avenue, Silver Spring, MD 20910, USA; (R.A.); (U.K.); (S.T.A.)
- The Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., Bethesda, MD 20817, USA
| | - Carolyn W. Zhu
- Mount Sinai Alzheimer’s Disease Research Center and the Ronald M. Loeb Center for Alzheimer’s Disease, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (C.W.Z.); (P.R.H.)
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, 130 West Kingsbridge Road, Bronx, NY 10468, USA;
- Department of Geriatrics and Palliative Care, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - William G. M. Janssen
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - James R. Stone
- Department of Radiology and Medical Imaging, University of Virginia, 480 Ray C Hunt Drive, Charlottesville, VA 22903, USA;
| | - Patrick R. Hof
- Mount Sinai Alzheimer’s Disease Research Center and the Ronald M. Loeb Center for Alzheimer’s Disease, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (C.W.Z.); (P.R.H.)
- Department of Geriatrics and Palliative Care, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - David G. Cook
- Geriatric Research Education and Clinical Center, VA Puget Sound Health Care System, 1660 S Columbian Way, Seattle, WA 98108, USA;
- Department of Medicine, University of Washington, 1959 NE Pacific St., Seattle, WA 98195, USA
| | - Stephen T. Ahlers
- Department of Neurotrauma, Operational and Undersea Medicine Directorate, Naval Medical ResearchCommand, 503 Robert Grant Avenue, Silver Spring, MD 20910, USA; (R.A.); (U.K.); (S.T.A.)
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Dasgupta S, Montroull LE, Pandya MA, Zanin JP, Wang W, Wu Z, Friedman WJ. Cortical Brain Injury Causes Retrograde Degeneration of Afferent Basal Forebrain Cholinergic Neurons via the p75NTR. eNeuro 2023; 10:ENEURO.0067-23.2023. [PMID: 37558465 PMCID: PMC10467018 DOI: 10.1523/eneuro.0067-23.2023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 06/15/2023] [Accepted: 07/01/2023] [Indexed: 08/11/2023] Open
Abstract
Traumatic brain injury (TBI) elicits neuronal loss at the site of injury and progressive neuronal loss in the penumbra. However, the consequences of TBI on afferent neurons projecting to the injured tissue from distal locations is unknown. Basal forebrain cholinergic neurons (BFCNs) extend long projections to multiple brain regions including the cortex, regulate many cognitive functions, and are compromised in numerous neurodegenerative disorders. To determine the consequence of cortical injury on these afferent neurons, we used the fluid percussion injury model of traumatic brain injury and assessed the effects on BFCN survival and axon integrity in male and female mice. Survival or death of BF neurons can be regulated by neurotrophins or proneurotrophins, respectively. The injury elicited an induction of proNGF and proBDNF in the cortex and a loss of BFCNs ipsilateral to the injury compared with sham uninjured mice. The p75NTR knock-out mice did not show loss of BFCN neurons, indicating a retrograde degenerative effect of the cortical injury on the afferent BFCNs mediated through p75NTR. In contrast, locus ceruleus neurons, which also project throughout the cortex, were unaffected by the injury, suggesting specificity in retrograde degeneration after cortical TBI. Proneurotrophins (proNTs) provided directly to basal forebrain axons in microfluidic cultures triggered retrograde axonal degeneration and cell death, which did not occur in the absence of p75NTR. This study shows that after traumatic brain injury, proNTs induced in the injured cortex promote BFCN axonal degeneration and retrograde neuron loss through p75NTR.
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Affiliation(s)
- Srestha Dasgupta
- Department of Biological Sciences, Rutgers University, Newark, New Jersey 07102
| | - Laura E Montroull
- Department of Biological Sciences, Rutgers University, Newark, New Jersey 07102
| | - Mansi A Pandya
- Department of Biological Sciences, Rutgers University, Newark, New Jersey 07102
| | - Juan P Zanin
- Department of Biological Sciences, Rutgers University, Newark, New Jersey 07102
| | - Wei Wang
- Helen and Robert Appel Alzheimer's Disease Research Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York 10021
| | - Zhuhao Wu
- Helen and Robert Appel Alzheimer's Disease Research Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York 10021
| | - Wilma J Friedman
- Department of Biological Sciences, Rutgers University, Newark, New Jersey 07102
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Barker S, Paul BD, Pieper AA. Increased Risk of Aging-Related Neurodegenerative Disease after Traumatic Brain Injury. Biomedicines 2023; 11:1154. [PMID: 37189772 PMCID: PMC10135798 DOI: 10.3390/biomedicines11041154] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/30/2023] [Accepted: 04/05/2023] [Indexed: 05/17/2023] Open
Abstract
Traumatic brain injury (TBI) survivors frequently suffer from chronically progressive complications, including significantly increased risk of developing aging-related neurodegenerative disease. As advances in neurocritical care increase the number of TBI survivors, the impact and awareness of this problem are growing. The mechanisms by which TBI increases the risk of developing aging-related neurodegenerative disease, however, are not completely understood. As a result, there are no protective treatments for patients. Here, we review the current literature surrounding the epidemiology and potential mechanistic relationships between brain injury and aging-related neurodegenerative disease. In addition to increasing the risk for developing all forms of dementia, the most prominent aging-related neurodegenerative conditions that are accelerated by TBI are amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD), Parkinson's disease (PD), and Alzheimer's disease (AD), with ALS and FTD being the least well-established. Mechanistic links between TBI and all forms of dementia that are reviewed include oxidative stress, dysregulated proteostasis, and neuroinflammation. Disease-specific mechanistic links with TBI that are reviewed include TAR DNA binding protein 43 and motor cortex lesions in ALS and FTD; alpha-synuclein, dopaminergic cell death, and synergistic toxin exposure in PD; and brain insulin resistance, amyloid beta pathology, and tau pathology in AD. While compelling mechanistic links have been identified, significantly expanded investigation in the field is needed to develop therapies to protect TBI survivors from the increased risk of aging-related neurodegenerative disease.
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Affiliation(s)
- Sarah Barker
- Center for Brain Health Medicines, Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA;
- Department of Psychiatry, Case Western Reserve University, Cleveland, OH 44106, USA
- Geriatric Psychiatry, GRECC, Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
- Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
- Department of Pathology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Bindu D. Paul
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21211, USA;
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21211, USA
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21211, USA
- Lieber Institute for Brain Development, Baltimore, MD 21205, USA
| | - Andrew A. Pieper
- Center for Brain Health Medicines, Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA;
- Department of Psychiatry, Case Western Reserve University, Cleveland, OH 44106, USA
- Geriatric Psychiatry, GRECC, Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
- Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
- Department of Pathology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
- Department of Neuroscience, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
- Translational Therapeutics Core, Cleveland Alzheimer’s Disease Research Center, Cleveland, OH 44106, USA
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Herrero Babiloni A, Baril AA, Charlebois-Plante C, Jodoin M, Sanchez E, De Baets L, Arbour C, Lavigne GJ, Gosselin N, De Beaumont L. The Putative Role of Neuroinflammation in the Interaction between Traumatic Brain Injuries, Sleep, Pain and Other Neuropsychiatric Outcomes: A State-of-the-Art Review. J Clin Med 2023; 12:jcm12051793. [PMID: 36902580 PMCID: PMC10002551 DOI: 10.3390/jcm12051793] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/15/2023] [Accepted: 02/21/2023] [Indexed: 02/25/2023] Open
Abstract
Sleep disturbances are widely prevalent following a traumatic brain injury (TBI) and have the potential to contribute to numerous post-traumatic physiological, psychological, and cognitive difficulties developing chronically, including chronic pain. An important pathophysiological mechanism involved in the recovery of TBI is neuroinflammation, which leads to many downstream consequences. While neuroinflammation is a process that can be both beneficial and detrimental to individuals' recovery after sustaining a TBI, recent evidence suggests that neuroinflammation may worsen outcomes in traumatically injured patients, as well as exacerbate the deleterious consequences of sleep disturbances. Additionally, a bidirectional relationship between neuroinflammation and sleep has been described, where neuroinflammation plays a role in sleep regulation and, in turn, poor sleep promotes neuroinflammation. Given the complexity of this interplay, this review aims to clarify the role of neuroinflammation in the relationship between sleep and TBI, with an emphasis on long-term outcomes such as pain, mood disorders, cognitive dysfunctions, and elevated risk of Alzheimer's disease and dementia. In addition, some management strategies and novel treatment targeting sleep and neuroinflammation will be discussed in order to establish an effective approach to mitigate long-term outcomes after TBI.
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Affiliation(s)
- Alberto Herrero Babiloni
- Division of Experimental Medicine, McGill University, Montreal, QC H3A 0C7, Canada
- CIUSSS-NIM, Hôpital du Sacré-Coeur de Montréal, Montreal, QC H4J 1C5, Canada
- Correspondence:
| | - Andrée-Ann Baril
- Douglas Mental Health University Institute, Montreal, QC H4H 1R3, Canada
- Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3G 2M1, Canada
| | | | - Marianne Jodoin
- CIUSSS-NIM, Hôpital du Sacré-Coeur de Montréal, Montreal, QC H4J 1C5, Canada
- Department of Psychology, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Erlan Sanchez
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada
| | - Liesbet De Baets
- Pain in Motion Research Group (PAIN), Department of Physiotherapy, Human Faculty of Medicine, University of Montreal, Montreal, QC H3T 1C5, Canada
- Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, 1050 Brussel, Belgium
| | - Caroline Arbour
- CIUSSS-NIM, Hôpital du Sacré-Coeur de Montréal, Montreal, QC H4J 1C5, Canada
- Faculty of Nursing, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Gilles J. Lavigne
- Division of Experimental Medicine, McGill University, Montreal, QC H3A 0C7, Canada
- CIUSSS-NIM, Hôpital du Sacré-Coeur de Montréal, Montreal, QC H4J 1C5, Canada
- Faculty of Dental Medicine, University of Montreal, Montreal, QC H3T 1C5, Canada
| | - Nadia Gosselin
- CIUSSS-NIM, Hôpital du Sacré-Coeur de Montréal, Montreal, QC H4J 1C5, Canada
| | - Louis De Beaumont
- CIUSSS-NIM, Hôpital du Sacré-Coeur de Montréal, Montreal, QC H4J 1C5, Canada
- Department of Surgery, University of Montreal, Montreal, QC H3T 1J4, Canada
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8
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Sharma HS, Muresanu DF, Nozari A, Lafuente JV, Buzoianu AD, Tian ZR, Huang H, Feng L, Bryukhovetskiy I, Manzhulo I, Wiklund L, Sharma A. Neuroprotective Effects of Nanowired Delivery of Cerebrolysin with Mesenchymal Stem Cells and Monoclonal Antibodies to Neuronal Nitric Oxide Synthase in Brain Pathology Following Alzheimer's Disease Exacerbated by Concussive Head Injury. ADVANCES IN NEUROBIOLOGY 2023; 32:139-192. [PMID: 37480461 DOI: 10.1007/978-3-031-32997-5_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
Concussive head injury (CHI) is one of the major risk factors in developing Alzheimer's disease (AD) in military personnel at later stages of life. Breakdown of the blood-brain barrier (BBB) in CHI leads to extravasation of plasma amyloid beta protein (ΑβP) into the brain fluid compartments precipitating AD brain pathology. Oxidative stress in CHI or AD is likely to enhance production of nitric oxide indicating a role of its synthesizing enzyme neuronal nitric oxide synthase (NOS) in brain pathology. Thus, exploration of the novel roles of nanomedicine in AD or CHI reducing NOS upregulation for neuroprotection are emerging. Recent research shows that stem cells and neurotrophic factors play key roles in CHI-induced aggravation of AD brain pathologies. Previous studies in our laboratory demonstrated that CHI exacerbates AD brain pathology in model experiments. Accordingly, it is quite likely that nanodelivery of NOS antibodies together with cerebrolysin and mesenchymal stem cells (MSCs) will induce superior neuroprotection in AD associated with CHI. In this review, co-administration of TiO2 nanowired cerebrolysin - a balanced composition of several neurotrophic factors and active peptide fragments, together with MSCs and monoclonal antibodies (mAb) to neuronal NOS is investigated for superior neuroprotection following exacerbation of brain pathology in AD exacerbated by CHI based on our own investigations. Our observations show that nanowired delivery of cerebrolysin, MSCs and neuronal NOS in combination induces superior neuroprotective in brain pathology in AD exacerbated by CHI, not reported earlier.
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Affiliation(s)
- Hari Shanker Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
| | - Dafin F Muresanu
- Department of Clinical Neurosciences, University of Medicine & Pharmacy, Cluj-Napoca, Romania
- "RoNeuro" Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - Ala Nozari
- Anesthesiology & Intensive Care, Chobanian & Avedisian School of Medicine, Boston University, Boston, MA, USA
| | - José Vicente Lafuente
- LaNCE, Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Bizkaia, Spain
| | - Anca D Buzoianu
- Department of Clinical Pharmacology and Toxicology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Z Ryan Tian
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, USA
| | - Hongyun Huang
- Beijing Hongtianji Neuroscience Academy, Beijing, China
| | - Lianyuan Feng
- Department of Neurology, Bethune International Peace Hospital, Shijiazhuang, Hebei Province, China
| | - Igor Bryukhovetskiy
- Department of Fundamental Medicine, School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia
| | - Igor Manzhulo
- Laboratory of Pharmacology, National Scientific Center of Marine Biology, Far East Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Lars Wiklund
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
| | - Aruna Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
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9
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Yang JY, Wang J, Hu Y, Shen DY, Xiao GL, Qin XY, Lan R. Paeoniflorin improves cognitive dysfunction, restores glutamate receptors, attenuates gliosis and maintains synaptic plasticity in cadmium-intoxicated mice. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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10
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Srinivasan G, Brafman DA. The Emergence of Model Systems to Investigate the Link Between Traumatic Brain Injury and Alzheimer’s Disease. Front Aging Neurosci 2022; 13:813544. [PMID: 35211003 PMCID: PMC8862182 DOI: 10.3389/fnagi.2021.813544] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 12/20/2021] [Indexed: 12/12/2022] Open
Abstract
Numerous epidemiological studies have demonstrated that individuals who have sustained a traumatic brain injury (TBI) have an elevated risk for developing Alzheimer’s disease and Alzheimer’s-related dementias (AD/ADRD). Despite these connections, the underlying mechanisms by which TBI induces AD-related pathology, neuronal dysfunction, and cognitive decline have yet to be elucidated. In this review, we will discuss the various in vivo and in vitro models that are being employed to provide more definite mechanistic relationships between TBI-induced mechanical injury and AD-related phenotypes. In particular, we will highlight the strengths and weaknesses of each of these model systems as it relates to advancing the understanding of the mechanisms that lead to TBI-induced AD onset and progression as well as providing platforms to evaluate potential therapies. Finally, we will discuss how emerging methods including the use of human induced pluripotent stem cell (hiPSC)-derived cultures and genome engineering technologies can be employed to generate better models of TBI-induced AD.
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11
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Perez Garcia G, De Gasperi R, Tschiffely AE, Gama Sosa MA, Abutarboush R, Kawoos U, Statz JK, Ciarlone S, Reed EM, Jeyarajah T, Perez G, Otero Pagan A, Pryor D, Hof P, Cook D, Gandy S, Elder G, Ahlers S. Repetitive low-level blast exposure improves behavioral deficits and chronically lowers Aβ42 in an Alzheimer's disease transgenic mouse model. J Neurotrauma 2021; 38:3146-3173. [PMID: 34353119 DOI: 10.1089/neu.2021.0184] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Public awareness of traumatic brain injury (TBI) in the military increased recently because of the conflicts in Iraq and Afghanistan where blast injury was the most common mechanism of injury. Besides overt injuries, concerns also exist over the potential adverse consequences of subclinical blast exposures, which are common for many service members. TBI is a risk factor for the later development of neurodegenerative diseases, including Alzheimer's disease (AD)-like disorders. Studies of acute TBI in humans and animals have suggested that increased processing of the amyloid precursor protein (APP) towards the amyloid beta protein (Aβ) may explain the epidemiological associations with AD. However, in a prior study we found in both rat and mouse models of blast overpressure exposure (BOP), that rather than increasing, rodent brain Aβ42 levels were decreased following acute blast exposure. Here we subjected APP/presenilin 1 transgenic mice (APP/PS1 Tg) to an extended sequence of repetitive low-level blast exposures (34.5 kPa) administered three times per week over 8 weeks. If initiated at 20 weeks of age, these repetitive exposures, which were designed to mimic human subclinical blast exposures, reduced anxiety and improved cognition as well as social interactions in APP/PS1 Tg mice, returning many behavioral parameters in APP/PS1 Tg mice to levels of non-transgenic wild type mice. Repetitive low-level blast exposure was less effective at improving behavioral deficits in APP/PS1 Tg mice when begun at 36 weeks of age. While amyloid plaque loads were unchanged, Aβ42 levels and Aβ oligomers were reduced in brain of mice exposed to repetitive low-level blast exposures initiated at 20 weeks of age, although levels did not directly correlate with behavioral parameters in individual animals. These results have implications for understanding the nature of blast effects on the brain and their relationship to human neurodegenerative diseases.
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Affiliation(s)
- Georgina Perez Garcia
- Icahn School of Medicine at Mount Sinai, 5925, Neurology, 1468 Madison Avenue Annenberg Building Floor 14 Room 60, New York, New York, New York, United States, 10029-6574.,James J Peters VA Medical Center, 20071, Research, 130 W Kingsbridge Rd, The Bronx, NY 10468, Bronx, United States, 10468-3904;
| | - Rita De Gasperi
- James J. Peters VA Medical Center, Research and Development, 130 west kingsbridge road, RD 3F-20, Bronx, New York, United States, 10468;
| | - Anna E Tschiffely
- Naval Medical Research Center, 19930, Silver Spring, Maryland, United States;
| | - Miguel A Gama Sosa
- James J. Peters VA Medical Center, Research and Development, 130 W Kingsbridge Rd, Bronx, New York, United States, 10468;
| | - Rania Abutarboush
- Naval Medical Research Center, 19930, Neurotrauma, 503 Robert Grant Ave, Silver Spring, Maryland, United States, 20910;
| | - Usmah Kawoos
- Naval Medical Research Center, 19930, Neurotrauma, 503 Robert Grant Ave, Silver Spring, Maryland, United States, 20910.,Henry M Jackson Foundation for the Advancement of Military Medicine Inc, 44069, Bethesda, Maryland, United States;
| | | | - Stephanie Ciarlone
- Naval Medical Research Center, 19930, Silver Spring, Maryland, United States;
| | - Eileen M Reed
- Naval Medical Research Center, 19930, Silver Spring, Maryland, United States;
| | - Theepica Jeyarajah
- Naval Medical Research Center, 19930, Silver Spring, Maryland, United States;
| | - Gissel Perez
- James J Peters VA Medical Center, 20071, Research and Development, Bronx, New York, United States;
| | - Alena Otero Pagan
- James J Peters VA Medical Center, 20071, Research and Development, Bronx, New York, United States;
| | - Dylan Pryor
- James J Peters VA Medical Center, 20071, Research, 130 W. Kingsbridge Rd., Bronx, New York, United States, 10468;
| | - Patrick Hof
- Icahn School of Medicine at Mount Sinai, 5925, New York, New York, United States;
| | - David Cook
- VA Puget Sound Health Care System, 20128, Geriatric Research, Education, and Clinical Center, 1660 S Columbian Way, Seattle, Washington, United States, 98108.,University of Washington, 7284, Division of Gerontology and Geriatric Medicine, Seattle, Washington, United States;
| | - Samuel Gandy
- 88 Mercer AvenueHartsdaleHartsdale, New York, United States, 10530.,Sam Gandy, 88 Mercer Avenue, United States;
| | - Gregory Elder
- James J. Peters VAMC, Research and Development 3F22, 130 West Kingsbridge Road, Bronx, New York, United States, 10468;
| | - Stephen Ahlers
- Naval Medical Research Center, OUMD, 503 Robert Grant Ave, Silver Spring, Maryland, United States, 20910;
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12
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Maigler KC, Buhr TJ, Park CS, Miller SA, Kozlowski DA, Marr RA. Assessment of the Effects of Altered Amyloid-Beta Clearance on Behavior following Repeat Closed-Head Brain Injury in Amyloid-Beta Precursor Protein Humanized Mice. J Neurotrauma 2021; 38:665-676. [PMID: 33176547 DOI: 10.1089/neu.2020.6989] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Traumatic brain injury (TBI) increases the risk for dementias including Alzheimer's disease (AD) and chronic traumatic encephalopathy. Further, both human and animal model data indicate that amyloid-beta (Aβ) peptide accumulation and its production machinery are upregulated by TBI. Considering the clear link between chronic Aβ elevation and AD as well as tau pathology, the role(s) of Aβ in TBI is of high importance. Endopeptidases, including the neprilysin (NEP)-like enzymes, are key mediators of Aβ clearance and may affect susceptibility to pathology post-TBI. Here, we use a "humanized" mouse model of Aβ production, which expresses normal human amyloid-beta precursor protein (APP) under its natural transcriptional regulation and exposed them to a more clinically relevant repeated closed-head TBI paradigm. These transgenic mice also were crossed with mice deficient for the Aβ degrading enzymes NEP or NEP2 to assess models of reduced cerebral Aβ clearance in our TBI model. Our results show that the presence of the human form of Aβ did not exacerbate motor (Rotarod) and spatial learning/memory deficits (Morris water maze) post-injuries, while potentially reduced anxiety (Open Field) was observed. NEP and NEP2 deficiency also did not exacerbate these deficits post-injuries and was associated with protection from motor (NEP and NEP2) and spatial learning/memory deficits (NEP only). These data suggest that normally regulated expression of wild-type human APP/Aβ does not contribute to deficits acutely after TBI and may be protective at this stage of injury.
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Affiliation(s)
- Kathleen C Maigler
- Center for Neurodegenerative Disease and Therapeutics, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| | - Trevor J Buhr
- Center for Neurodegenerative Disease and Therapeutics, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| | - Christopher S Park
- Center for Neurodegenerative Disease and Therapeutics, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| | - Steven A Miller
- Department of Psychology, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| | - Dorothy A Kozlowski
- Department of Biological Sciences and Neuroscience Program, DePaul University, Chicago, Illinois, USA
| | - Robert A Marr
- Center for Neurodegenerative Disease and Therapeutics, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
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13
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Shi YB, Tu T, Jiang J, Zhang QL, Ai JQ, Pan A, Manavis J, Tu E, Yan XX. Early Dendritic Dystrophy in Human Brains With Primary Age-Related Tauopathy. Front Aging Neurosci 2020; 12:596894. [PMID: 33364934 PMCID: PMC7750631 DOI: 10.3389/fnagi.2020.596894] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 11/06/2020] [Indexed: 12/15/2022] Open
Abstract
Dystrophic neurites (DNs) are found in many neurological conditions such as traumatic brain injury and age-related neurodegenerative diseases. In Alzheimer's disease (AD) specifically, senile plaques containing silver-stained DNs were already described in the original literature defining this disease. These DNs could be both axonal and dendritic in origin, while axonal dystrophy relative to plaque formation has been more extensively studied. Here, we demonstrate an early occurrence of dendritic dystrophy in the hippocampal CA1 and subicular regions in human brains (n = 23) with primary age-related tauopathy (PART), with neurofibrillary tangle (NFT) burden ranging from Braak stages I to III in the absence of cerebral β-amyloid (Aβ) deposition. In Bielschowsky's silver stain, segmented fusiform swellings on the apical dendrites of hippocampal and subicular pyramidal neurons were observed in all the cases, primarily over the stratum radiatum (s.r.). The numbers of silver-stained neuronal somata and dendritic swellings counted over CA1 to subiculum were positively correlated among the cases. Swollen dendritic processes were also detected in sections immunolabeled for phosphorylated tau (pTau) and sortilin. In aged and AD brains with both Aβ and pTau pathologies, silver- and immunolabeled dystrophic-like dendritic profiles occurred around and within individual neuritic plaques. These findings implicate that dendritic dystrophy can occur among hippocampal pyramidal neurons in human brains with PART. Therefore, as with the case of axonal dystrophy reported in literature, dendritic dystrophy can develop prior to Alzheimer-type plaque and tangle formation in the human brain.
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Affiliation(s)
- Yan-Bin Shi
- Medical Doctor Program, Xiangya School of Medicine, Central South University, Changsha, China
| | - Tian Tu
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Juan Jiang
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Qi-Lei Zhang
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Jia-Qi Ai
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Aihua Pan
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Jim Manavis
- Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, SA, Australia
| | - Ewen Tu
- Department of Neurology, Brain Hospital of Hunan Province, Changsha, China
| | - Xiao-Xin Yan
- Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, China
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14
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Zyśk M, Clausen F, Aguilar X, Sehlin D, Syvänen S, Erlandsson A. Long-Term Effects of Traumatic Brain Injury in a Mouse Model of Alzheimer's Disease. J Alzheimers Dis 2020; 72:161-180. [PMID: 31561367 PMCID: PMC6839469 DOI: 10.3233/jad-190572] [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] [Indexed: 12/26/2022]
Abstract
Alzheimer’s disease (AD) is the leading cause of dementia worldwide, affecting over 10% of the elderly population. Epidemiological evidence indicates that traumatic brain injury (TBI) is an important risk factor for developing AD later in life. However, which injury-induced processes that contribute to the disease onset remains unclear. The aim with the present study was to identify cellular processes that could link TBI to AD development, by investigating the chronic impact of two different injury models, controlled cortical impact (CCI) and midline fluid percussion injury (mFPI). The trauma was induced in 3-month-old tg-ArcSwe mice, carrying the Arctic mutation along with the Swedish mutation, and the influence of TBI on AD progression was analyzed at 12- and 24-weeks post-injury. The long-term effect of the TBI on memory deficiency, amyloid-β (Aβ) pathology, neurodegeneration and inflammation was investigated by Morris water maze, PET imaging, immunohistochemistry, and biochemical analyses. Morris water maze analysis demonstrated that mice subjected to CCI or mFPI performed significantly worse than uninjured tg-ArcSwe mice, especially at the later time point. Moreover, the injured mice showed a late upregulation of reactive gliosis, which concurred with a more pronounced Aβ pathology, compared to uninjured AD mice. Our results suggest that the delayed glial activation following TBI may be an important link between the two diseases. However, further studies in both experimental models and human TBI patients will be required to fully elucidate the reasons why TBI increases the risk of neurodegeneration.
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Affiliation(s)
- Marlena Zyśk
- Department of Public Health and Caring Sciences, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Fredrik Clausen
- Department of Neuroscience, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Ximena Aguilar
- Department of Public Health and Caring Sciences, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Dag Sehlin
- Department of Public Health and Caring Sciences, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Stina Syvänen
- Department of Public Health and Caring Sciences, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
| | - Anna Erlandsson
- Department of Public Health and Caring Sciences, Uppsala University, Rudbeck Laboratory, Uppsala, Sweden
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15
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Whiten DR, Brownjohn PW, Moore S, De S, Strano A, Zuo Y, Haneklaus M, Klenerman D, Livesey FJ. Tumour necrosis factor induces increased production of extracellular amyloid-β- and α-synuclein-containing aggregates by human Alzheimer's disease neurons. Brain Commun 2020; 2:fcaa146. [PMID: 33543132 PMCID: PMC7850285 DOI: 10.1093/braincomms/fcaa146] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 07/21/2020] [Accepted: 07/27/2020] [Indexed: 01/24/2023] Open
Abstract
In addition to increased aberrant protein aggregation, inflammation has been proposed as a key element in the pathogenesis and progression of Alzheimer’s disease. How inflammation interacts with other disease pathways and how protein aggregation increases during disease are not clear. We used single-molecule imaging approaches and membrane permeabilization assays to determine the effect of chronic exposure to tumour necrosis factor, a master proinflammatory cytokine, on protein aggregation in human-induced pluripotent stem cell-derived neurons harbouring monogenic Alzheimer’s disease mutations. We report that exposure of Alzheimer’s disease neurons, but not control neurons, to tumour necrosis factor induces substantial production of extracellular protein aggregates. Aggregates from Alzheimer’s disease neurons are composed of amyloid-β and α-synuclein and induce significant permeabilization of lipid membranes in an assay of pathogenicity. These findings provide support for a causal relationship between two crucial processes in Alzheimer’s disease pathogenesis and suggest that targeting inflammation, particularly tumour necrosis factor, may have beneficial downstream effects on ameliorating aberrant protein aggregation and accumulation.
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Affiliation(s)
- Daniel R Whiten
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Philip W Brownjohn
- Zayed Centre for Research into Rare Disease in Children, UCL Great Ormond Street Institute of Child Health, London WC1N 1DZ, UK
| | - Steven Moore
- Zayed Centre for Research into Rare Disease in Children, UCL Great Ormond Street Institute of Child Health, London WC1N 1DZ, UK
| | - Suman De
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Alessio Strano
- Zayed Centre for Research into Rare Disease in Children, UCL Great Ormond Street Institute of Child Health, London WC1N 1DZ, UK
| | - Yukun Zuo
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Moritz Haneklaus
- Zayed Centre for Research into Rare Disease in Children, UCL Great Ormond Street Institute of Child Health, London WC1N 1DZ, UK
| | - David Klenerman
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK.,UK Dementia Research Institute at University of Cambridge, Cambridge CB2 0XY, UK
| | - Frederick J Livesey
- Zayed Centre for Research into Rare Disease in Children, UCL Great Ormond Street Institute of Child Health, London WC1N 1DZ, UK
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16
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Ennerfelt HE, Lukens JR. The role of innate immunity in Alzheimer's disease. Immunol Rev 2020; 297:225-246. [PMID: 32588460 PMCID: PMC7783860 DOI: 10.1111/imr.12896] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/23/2020] [Accepted: 05/28/2020] [Indexed: 12/12/2022]
Abstract
The amyloid hypothesis has dominated Alzheimer's disease (AD) research for almost 30 years. This hypothesis hinges on the predominant clinical role of the amyloid beta (Aβ) peptide in propagating neurofibrillary tangles (NFTs) and eventual cognitive impairment in AD. Recent research in the AD field has identified the brain-resident macrophages, known as microglia, and their receptors as integral regulators of both the initiation and propagation of inflammation, Aβ accumulation, neuronal loss, and memory decline in AD. Emerging studies have also begun to reveal critical roles for distinct innate immune pathways in AD pathogenesis, which has led to great interest in harnessing the innate immune response as a therapeutic strategy to treat AD. In this review, we will highlight recent advancements in our understanding of innate immunity and inflammation in AD onset and progression. Additionally, there has been mounting evidence suggesting pivotal contributions of environmental factors and lifestyle choices in AD pathogenesis. Therefore, we will also discuss recent findings, suggesting that many of these AD risk factors influence AD progression via modulation of microglia and immune responses.
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Affiliation(s)
- Hannah E. Ennerfelt
- Center for Brain Immunology and Glia (BIG), Department of Neuroscience, University of Virginia, Charlottesville, VA 22908, USA
- Neuroscience Graduate Program, University of Virginia, Charlottesville, VA 22908, USA
- Cell and Molecular Biology Training Program, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - John R. Lukens
- Center for Brain Immunology and Glia (BIG), Department of Neuroscience, University of Virginia, Charlottesville, VA 22908, USA
- Neuroscience Graduate Program, University of Virginia, Charlottesville, VA 22908, USA
- Cell and Molecular Biology Training Program, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA
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17
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Ledreux A, Pryhoda MK, Gorgens K, Shelburne K, Gilmore A, Linseman DA, Fleming H, Koza LA, Campbell J, Wolff A, Kelly JP, Margittai M, Davidson BS, Granholm AC. Assessment of Long-Term Effects of Sports-Related Concussions: Biological Mechanisms and Exosomal Biomarkers. Front Neurosci 2020; 14:761. [PMID: 32848549 PMCID: PMC7406890 DOI: 10.3389/fnins.2020.00761] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/29/2020] [Indexed: 12/24/2022] Open
Abstract
Concussion or mild traumatic brain injury (mTBI) in athletes can cause persistent symptoms, known as post-concussion syndrome (PCS), and repeated injuries may increase the long-term risk for an athlete to develop neurodegenerative diseases such as chronic traumatic encephalopathy (CTE), and Alzheimer's disease (AD). The Center for Disease Control estimates that up to 3.8 million sport-related mTBI are reported each year in the United States. Despite the magnitude of the phenomenon, there is a current lack of comprehensive prognostic indicators and research has shown that available monitoring tools are moderately sensitive to short-term concussion effects but less sensitive to long-term consequences. The overall aim of this review is to discuss novel, quantitative, and objective measurements that can predict long-term outcomes following repeated sports-related mTBIs. The specific objectives were (1) to provide an overview of the current clinical and biomechanical tools available to health practitioners to ensure recovery after mTBIs, (2) to synthesize potential biological mechanisms in animal models underlying the long-term adverse consequences of mTBIs, (3) to discuss the possible link between repeated mTBI and neurodegenerative diseases, and (4) to discuss the current knowledge about fluid biomarkers for mTBIs with a focus on novel exosomal biomarkers. The conclusions from this review are that current post-concussion clinical tests are not sufficiently sensitive to injury and do not accurately quantify post-concussion alterations associated with repeated mTBIs. In the current review, it is proposed that current practices should be amended to include a repeated symptom inventory, a cognitive assessment of executive function and impulse control, an instrumented assessment of balance, vestibulo-ocular assessments, and an improved panel of blood or exosome biomarkers.
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Affiliation(s)
- Aurélie Ledreux
- Knoebel Institute for Healthy Aging, University of Denver, Denver, CO, United States
| | - Moira K. Pryhoda
- Department of Mechanical and Materials Engineering, University of Denver, Denver, CO, United States
| | - Kim Gorgens
- Graduate School of Professional Psychology, University of Denver, Denver, CO, United States
| | - Kevin Shelburne
- Department of Mechanical and Materials Engineering, University of Denver, Denver, CO, United States
| | - Anah Gilmore
- Knoebel Institute for Healthy Aging, University of Denver, Denver, CO, United States
| | - Daniel A. Linseman
- Knoebel Institute for Healthy Aging, University of Denver, Denver, CO, United States
- Biological Sciences, University of Denver, Denver, CO, United States
| | - Holly Fleming
- Biological Sciences, University of Denver, Denver, CO, United States
| | - Lilia A. Koza
- Knoebel Institute for Healthy Aging, University of Denver, Denver, CO, United States
- Biological Sciences, University of Denver, Denver, CO, United States
| | - Julie Campbell
- Pioneer Health and Performance, University of Denver, Denver, CO, United States
| | - Adam Wolff
- Denver Neurological Clinic, Denver, CO, United States
| | - James P. Kelly
- Marcus Institute for Brain Health, Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Martin Margittai
- Department of Chemistry and Biochemistry, University of Denver, Denver, CO, United States
| | - Bradley S. Davidson
- Department of Mechanical and Materials Engineering, University of Denver, Denver, CO, United States
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18
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Ojo JO, Leary P, Lungmus C, Algamal M, Mouzon B, Bachmeier C, Mullan M, Stewart W, Crawford F. Subchronic Pathobiological Response Following Chronic Repetitive Mild Traumatic Brain Injury in an Aged Preclinical Model of Amyloid Pathogenesis. J Neuropathol Exp Neurol 2019; 77:1144-1162. [PMID: 30395237 DOI: 10.1093/jnen/nly101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/04/2018] [Indexed: 12/14/2022] Open
Abstract
Repetitive mild traumatic brain injury (r-mTBI) is a risk factor for Alzheimer disease (AD). The precise nature of how r-mTBI leads to, or precipitates, AD pathogenesis remains unclear. In this study, we explore subchronic effects of chronic r-mTBI (12-impacts) administered over 1-month in aged-PS1/APP mice and littermate controls. We investigate specific mechanisms that may elucidate the molecular link between AD and r-mTBI, focusing primarily on amyloid and tau pathology, amyloid processing, glial activation states, and associated clearance mechanisms. Herein, we demonstrate r-mTBI in aged PS1/APP mice does not augment, glial activation, amyloid burden, or tau pathology (with exception of pS202-positive Tau) 1 month after exposure to the last-injury. However, we observed a decrease in brain soluble Aβ42 levels without any appreciable change in peripheral soluble Aβ42 levels. This was accompanied by an increase in brain insoluble to soluble Aβ42 ratio in injured PS1/APP mice compared with sham injury. A parallel reduction in phagocytic receptor, triggering receptor expressed on myeloid cells 2, was also observed. This study demonstrates very subtle subchronic effects of r-mTBI on a preexisting amyloid pathology background, which may be on a continuum toward a slow and worsening neurodegenerative outcome compared with sham injury, and therefore, have many implications, especially in the elderly population exposed to TBI.
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Affiliation(s)
- Joseph O Ojo
- Experimental Neuropathology and TBI Research Division, Roskamp Institute, Sarasota, Florida.,James A. Haley Veterans' Hospital, Tampa, Florida.,Open University, Milton Keynes, UK
| | - Paige Leary
- Experimental Neuropathology and TBI Research Division, Roskamp Institute, Sarasota, Florida
| | - Caryln Lungmus
- Experimental Neuropathology and TBI Research Division, Roskamp Institute, Sarasota, Florida
| | - Moustafa Algamal
- Experimental Neuropathology and TBI Research Division, Roskamp Institute, Sarasota, Florida.,Open University, Milton Keynes, UK
| | - Benoit Mouzon
- Experimental Neuropathology and TBI Research Division, Roskamp Institute, Sarasota, Florida.,James A. Haley Veterans' Hospital, Tampa, Florida.,Open University, Milton Keynes, UK
| | - Corbin Bachmeier
- Experimental Neuropathology and TBI Research Division, Roskamp Institute, Sarasota, Florida.,Open University, Milton Keynes, UK.,Bay Pines VA Healthcare System, Bay Pines, Florida
| | - Michael Mullan
- Experimental Neuropathology and TBI Research Division, Roskamp Institute, Sarasota, Florida.,Open University, Milton Keynes, UK
| | - William Stewart
- Queen Elizabeth University Hospital and University of Glasgow, Glasgow, UK.,University of Pennsylvania, Philadelphia, Pennsylvania
| | - Fiona Crawford
- Experimental Neuropathology and TBI Research Division, Roskamp Institute, Sarasota, Florida.,James A. Haley Veterans' Hospital, Tampa, Florida.,Open University, Milton Keynes, UK
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19
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de Castro AA, Soares FV, Pereira AF, Polisel DA, Caetano MS, Leal DHS, da Cunha EFF, Nepovimova E, Kuca K, Ramalho TC. Non-conventional compounds with potential therapeutic effects against Alzheimer’s disease. Expert Rev Neurother 2019; 19:375-395. [DOI: 10.1080/14737175.2019.1608823] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Alexandre A. de Castro
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras, Brazil
| | - Flávia V. Soares
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras, Brazil
| | - Ander F. Pereira
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras, Brazil
| | - Daniel A. Polisel
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras, Brazil
| | - Melissa S. Caetano
- Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Daniel H. S. Leal
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras, Brazil
- Department of Health Sciences, Federal University of Espírito Santo, São Mateus, Brazil
| | - Elaine F. F. da Cunha
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras, Brazil
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Teodorico C. Ramalho
- Laboratory of Molecular Modeling, Department of Chemistry, Federal University of Lavras, Lavras, Brazil
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
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20
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Traumatic Brain Injury by Weight-Drop Method Causes Transient Amyloid- β Deposition and Acute Cognitive Deficits in Mice. Behav Neurol 2019; 2019:3248519. [PMID: 30944661 PMCID: PMC6421814 DOI: 10.1155/2019/3248519] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/11/2018] [Accepted: 01/09/2019] [Indexed: 11/17/2022] Open
Abstract
There has been growing awareness of the correlation between an episode of traumatic brain injury (TBI) and the development of Alzheimer's disease (AD) later in life. It has been reported that TBI accelerated amyloid-β (Aβ) pathology and cognitive decline in the several lines of AD model mice. However, the short-term and long-term effects of TBI by the weight-drop method on amyloid-β pathology and cognitive performance are unclear in wild-type (WT) mice. Hence, we examined AD-related histopathological changes and cognitive impairment after TBI in wild-type C57BL6J mice. Five- to seven-month-old WT mice were subjected to either TBI by the weight-drop method or a sham treatment. Seven days after TBI, the WT mice exhibited significantly lower spatial learning than the sham-treated WT mice. However, 28 days after TBI, the cognitive impairment in the TBI-treated WT mice recovered. Correspondingly, while significant amyloid-β (Aβ) plaques and amyloid precursor protein (APP) accumulation were observed in the TBI-treated mouse hippocampus 7 days after TBI, the Aβ deposition was no longer apparent 28 days after TBI. Thus, TBI induced transient amyloid-β deposition and acute cognitive impairments in the WT mice. The present study suggests that the TBI could be a risk factor for acute cognitive impairment even when genetic and hereditary predispositions are not involved. The system might be useful for evaluating and developing a pharmacological treatment for the acute cognitive deficits.
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Lee JY, Acosta S, Tuazon JP, Xu K, Nguyen H, Lippert T, Liska MG, Semechkin A, Garitaonandia I, Gonzalez R, Kern R, Borlongan CV. Human parthenogenetic neural stem cell grafts promote multiple regenerative processes in a traumatic brain injury model. Am J Cancer Res 2019; 9:1029-1046. [PMID: 30867814 PMCID: PMC6401413 DOI: 10.7150/thno.29868] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 11/16/2018] [Indexed: 12/12/2022] Open
Abstract
International Stem Cell Corporation human parthenogenetic neural stem cells (ISC-hpNSC) have potential therapeutic value for patients suffering from traumatic brain injury (TBI). Here, we demonstrate the behavioral and histological effects of transplanting ISC-hpNSC intracerebrally in an animal model of TBI. Methods: Sprague-Dawley rats underwent a moderate controlled cortical impact TBI surgery. Transplantation occurred at 72 h post-TBI with functional readouts of behavioral and histological deficits conducted during the subsequent 3-month period after TBI. We characterized locomotor, neurological, and cognitive performance at baseline (before TBI), then on days 0, 1, 7, 14, 30, 60, and 90 (locomotor and neurological), and on days 28-30, 58-60, and 88-90 (cognitive) after TBI. Following completion of behavioral testing at 3 months post-TBI, animals were euthanized by transcardial perfusion and brains harvested to histologically characterize the extent of brain damage. Neuronal survival was revealed by Nissl staining, and stem cell engraftment and host tissue repair mechanisms such as the anti-inflammatory response in peri-TBI lesion areas were examined by immunohistochemical analyses. Results: We observed that TBI groups given high and moderate doses of ISC-hpNSC had an improved swing bias on an elevated body swing test for motor function, increased scores on forelimb akinesia and paw grasp neurological tests, and committed significantly fewer errors on a radial arm water maze test for cognition. Furthermore, histological analyses indicated that high and moderate doses of stem cells increased the expression of phenotypic markers related to the neural lineage and myelination and decreased reactive gliosis and inflammation in the brain, increased neuronal survival in the peri-impact area of the cortex, and decreased inflammation in the spleen at 90 days post-TBI. Conclusion: These results provide evidence that high and moderate doses of ISC-hpNSC ameliorate TBI-associated histological alterations and motor, neurological, and cognitive deficits.
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Portbury SD, Sedjahtera A, Perrones K, Sgambelloni C, Zhang M, Crack PJ, Finkelstein DI, Adlard PA. Metal chaperones: a novel therapeutic strategy for brain injury? Brain Inj 2018; 33:305-312. [PMID: 30507321 DOI: 10.1080/02699052.2018.1552988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE This study sought to assess the potential efficacy of a novel class of metal chaperone on the outcomes in an animal model of a controlled cortical impact. This work was predicated on previous observations that this class of compound has exhibited neuroprotective potential in other models of aging and neurodegeneration. RESEARCH DESIGN The study employed a controlled cortical impact traumatic brain injury in three month old mice with subsequent behavioral and cellular assessments to determine therapeutic efficacy. METHODS Cognitive (Y-maze) and motor assessments (Rotarod and Open Field) were employed to determine behavioral end points. Histological-based methods were utilized to assess neuronal integrity, astrocytosis, and lesion volume. OUTCOMES We demonstrate here that acute post-injury treatment with PBT2 (Prana Biotechnology) is sufficient to maintain neuronal integrity (evidenced by decreased lesion area and increased numbers of neurons; decreased astrocytosis was also present) and to normalize performance in cognitive testing (Y-maze). These effects occurred within days and were maintained for the entire duration of the study (26 days post-injury). These data support the further interrogation of the utility of metal chaperones for the treatment and/or prevention of the neuroanatomical, biochemical, and behavioral deficits that occur following brain injuries of different etiologies.
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Affiliation(s)
- S D Portbury
- a The Florey Institute of Neuroscience and Mental Health, Dementia Theme , Parkville, Victoria , Australia
| | - A Sedjahtera
- a The Florey Institute of Neuroscience and Mental Health, Dementia Theme , Parkville, Victoria , Australia
| | - K Perrones
- a The Florey Institute of Neuroscience and Mental Health, Dementia Theme , Parkville, Victoria , Australia
| | - C Sgambelloni
- a The Florey Institute of Neuroscience and Mental Health, Dementia Theme , Parkville, Victoria , Australia
| | - M Zhang
- b Department of Pharmacology and Therapeutics , The University of Melbourne , Parkville, Victoria , Australia
| | - P J Crack
- b Department of Pharmacology and Therapeutics , The University of Melbourne , Parkville, Victoria , Australia
| | - D I Finkelstein
- a The Florey Institute of Neuroscience and Mental Health, Dementia Theme , Parkville, Victoria , Australia
| | - P A Adlard
- a The Florey Institute of Neuroscience and Mental Health, Dementia Theme , Parkville, Victoria , Australia.,c The University of Melbourne , Melbourne , Australia
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23
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Ma MW, Wang J, Dhandapani KM, Wang R, Brann DW. NADPH oxidases in traumatic brain injury - Promising therapeutic targets? Redox Biol 2018; 16:285-293. [PMID: 29571125 PMCID: PMC5952873 DOI: 10.1016/j.redox.2018.03.005] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/09/2018] [Accepted: 03/10/2018] [Indexed: 12/22/2022] Open
Abstract
Traumatic brain injury (TBI) is a major cause of death and disability worldwide. Despite intense investigation, no neuroprotective agents for TBI have yet translated to the clinic. Recent efforts have focused on identifying potential therapeutic targets that underlie the secondary TBI pathology that evolves minutes to years following the initial injury. Oxidative stress is a key player in this complex cascade of secondary injury mechanisms and prominently contributes to neurodegeneration and neuroinflammation. NADPH oxidase (NOX) is a family of enzymes whose unique function is to produce reactive oxygen species (ROS). Human post-mortem and animal studies have identified elevated NOX2 and NOX4 levels in the injured brain, suggesting that these two NOXs are involved in the pathogenesis of TBI. In support of this, NOX2 and NOX4 deletion studies have collectively revealed that targeting NOX enzymes can reduce oxidative stress, attenuate neuroinflammation, promote neuronal survival, and improve functional outcomes following TBI. In addition, NOX inhibitor studies have confirmed these findings and demonstrated an extended critical window of efficacious TBI treatment. Finally, the translational potential, caveats, and future directions of the field are highlighted and discussed throughout the review.
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Affiliation(s)
- Merry W Ma
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Jing Wang
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Krishnan M Dhandapani
- Department of Neurosurgery, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Ruimin Wang
- Department of Neurobiology, North China University of Science and Technology, Tangshan, Hebei, China
| | - Darrell W Brann
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA.
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24
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Brothers HM, Gosztyla ML, Robinson SR. The Physiological Roles of Amyloid-β Peptide Hint at New Ways to Treat Alzheimer's Disease. Front Aging Neurosci 2018; 10:118. [PMID: 29922148 PMCID: PMC5996906 DOI: 10.3389/fnagi.2018.00118] [Citation(s) in RCA: 210] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 04/06/2018] [Indexed: 12/11/2022] Open
Abstract
Amyloid-ß (Aß) is best known as the misfolded peptide that is involved in the pathogenesis of Alzheimer's disease (AD), and it is currently the primary therapeutic target in attempts to arrest the course of this disease. This notoriety has overshadowed evidence that Aß serves several important physiological functions. Aß is present throughout the lifespan, it has been found in all vertebrates examined thus far, and its molecular sequence shows a high degree of conservation. These features are typical of a factor that contributes significantly to biological fitness, and this suggestion has been supported by evidence of functions that are beneficial for the brain. The putative roles of Aß include protecting the body from infections, repairing leaks in the blood-brain barrier, promoting recovery from injury, and regulating synaptic function. Evidence for these beneficial roles comes from in vitro and in vivo studies, which have shown that the cellular production of Aß rapidly increases in response to a physiological challenge and often diminishes upon recovery. These roles are further supported by the adverse outcomes of clinical trials that have attempted to deplete Aß in order to treat AD. We suggest that anti-Aß therapies will produce fewer adverse effects if the known triggers of Aß deposition (e.g., pathogens, hypertension, and diabetes) are addressed first.
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Affiliation(s)
- Holly M Brothers
- Department of Psychology, The Ohio State University Columbus, Columbus, OH, United States
| | - Maya L Gosztyla
- Department of Neuroscience, The Ohio State University Columbus, Columbus, OH, United States
| | - Stephen R Robinson
- Discipline of Psychology, School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
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25
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Kokiko-Cochran ON, Godbout JP. The Inflammatory Continuum of Traumatic Brain Injury and Alzheimer's Disease. Front Immunol 2018; 9:672. [PMID: 29686672 PMCID: PMC5900037 DOI: 10.3389/fimmu.2018.00672] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 03/19/2018] [Indexed: 12/23/2022] Open
Abstract
The post-injury inflammatory response is a key mediator in long-term recovery from traumatic brain injury (TBI). Moreover, the immune response to TBI, mediated by microglia and macrophages, is influenced by existing brain pathology and by secondary immune challenges. For example, recent evidence shows that the presence of beta-amyloid and phosphorylated tau protein, two hallmark features of AD that increase during normal aging, substantially alter the macrophage response to TBI. Additional data demonstrate that post-injury microglia are “primed” and become hyper-reactive following a subsequent acute immune challenge thereby worsening recovery. These alterations may increase the incidence of neuropsychiatric complications after TBI and may also increase the frequency of neurodegenerative pathology. Therefore, the purpose of this review is to summarize experimental studies examining the relationship between TBI and development of AD-like pathology with an emphasis on the acute and chronic microglial and macrophage response following injury. Furthermore, studies will be highlighted that examine the degree to which beta-amyloid and tau accumulation as well as pre- and post-injury immune stressors influence outcome after TBI. Collectively, the studies described in this review suggest that the brain’s immune response to injury is a key mediator in recovery, and if compromised by previous, coincident, or subsequent immune stressors, post-injury pathology and behavioral recovery will be altered.
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Affiliation(s)
- Olga N Kokiko-Cochran
- Department of Neuroscience, Institute for Behavioral Medicine Research, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Jonathan P Godbout
- Department of Neuroscience, Institute for Behavioral Medicine Research, The Ohio State University Wexner Medical Center, Columbus, OH, United States
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26
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Becker RE, Kapogiannis D, Greig NH. Does traumatic brain injury hold the key to the Alzheimer's disease puzzle? Alzheimers Dement 2018; 14:431-443. [PMID: 29245000 PMCID: PMC5958613 DOI: 10.1016/j.jalz.2017.11.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 10/10/2017] [Accepted: 11/14/2017] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Neurodegenerative disorders have been a graveyard for hundreds of well-intentioned efforts at drug discovery and development. Concussion and other traumatic brain injuries (TBIs) and Alzheimer's disease (AD) share many overlapping pathologies and possible clinical links. METHODS We searched the literature since 1995 using MEDLINE and Google Scholar for the terms concussion, AD, and shared neuropathologies. We also studied a TBI animal model as a supplement to transgenic (Tg) mouse AD models for evaluating AD drug efficacy by preventing neuronal losses. To evaluate TBI/AD pathologies and neuronal self-induced cell death (apoptosis), we are studying brain extracellular vesicles in plasma and (-)-phenserine pharmacology to probe, in animal models of AD and humans, apoptosis and pathways common to concussion and AD. RESULTS Neuronal cell death and a diverse and significant pathological cascade follow TBIs. Many of the developing pathologies are present in early AD. The use of an animal model of concussion as a supplement to Tg mice provides an indication of an AD drug candidate's potential for preventing apoptosis and resulting progression toward dementia in AD. This weight drop supplementation to Tg mouse models, the experimental drug (-)-phenserine, and plasma-derived extracellular vesicles enriched for neuronal origin to follow biomarkers of neurodegenerative processes, each and in combination, show promise as tools useful for probing the progression of disease in AD, TBI/AD pathologies, apoptosis, and drug effects on rates of apoptosis both preclinically and in humans. (-)-Phenserine both countered many subacute post-TBI pathologies that could initiate clinical AD and, in the concussion and other animal models, showed evidence consistent with direct inhibition of neuronal preprogrammed cell death in the presence of TBI/AD pathologies. DISCUSSION These findings may provide support for expanding preclinical Tg mouse studies in AD with a TBI weight drop model, insights into the progression of pathological targets, their relations to apoptosis, and timing of interventions against these targets and apoptosis. Such studies may demonstrate the potential for drugs to effectively and safely inhibit preprogrammed cell death as a new drug development strategy for use in the fight to defeat AD.
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Affiliation(s)
- Robert E Becker
- Aristea Translational Medicine Corporation, Park City, UT, USA; Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, Baltimore, MD, USA.
| | - Dimitrios Kapogiannis
- Laboratory of Neurosciences, Intramural Research Program, National Institute on Aging, Baltimore, MD, USA
| | - Nigel H Greig
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, Baltimore, MD, USA.
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27
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Cheng WH, Stukas S, Martens KM, Namjoshi DR, Button EB, Wilkinson A, Bashir A, Robert J, Cripton PA, Wellington CL. Age at injury and genotype modify acute inflammatory and neurofilament-light responses to mild CHIMERA traumatic brain injury in wild-type and APP/PS1 mice. Exp Neurol 2017; 301:26-38. [PMID: 29269117 DOI: 10.1016/j.expneurol.2017.12.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/11/2017] [Accepted: 12/15/2017] [Indexed: 12/14/2022]
Abstract
Peak incidence of traumatic brain injury (TBI) occurs in both young and old individuals, and older age at injury is associated with worse outcome and poorer recovery. Moderate-severe TBI is a reported risk factor for dementia, including Alzheimer's disease (AD), but whether mild TBI (mTBI) alters AD pathogenesis is not clear. To delineate how age at injury and predisposition to amyloid formation affect the acute response to mTBI, we used the Closed Head Impact Model of Engineered Rotational Acceleration (CHIMERA) model of TBI to induce two mild injuries in wild-type (WT) and APP/PS1 mice at either 6 or 13months of age and assessed behavioural, histological and biochemical changes up to 14days post-injury. Age at injury did not alter acute behavioural responses to mTBI, including measures of neurological status, motor performance, spatial memory, fear, or anxiety, in either strain. Young APP/PS1 mice showed a subtle and transient increase in diffuse Aβ deposits after injury, whereas old APP/PS1 mice showed decreased amyloid deposits, without significant alterations in total soluble or insoluble Aβ levels at either age. Age at injury and genotype showed complex responses with respect to microglial and cytokine outcomes, where post-injury neuroinflammation is increased in old WT mice but attenuated in old APP/PS1 mice. Intriguingly, silver staining confirmed axonal damage in both strains and ages, yet only young WT and APP/PS1 mice showed neurofilament-positive axonal swellings after mTBI, as this response was almost entirely attenuated in old mice. Plasma neurofilament-light levels were significantly elevated after injury only in young APP/PS1 mice. This study suggests that mild TBI has minimal effects on Aβ metabolism, but that age and genotype can each modify acute outcomes related to white matter injury.
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Affiliation(s)
- Wai Hang Cheng
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Sophie Stukas
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Kris M Martens
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Dhananjay R Namjoshi
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Emily B Button
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Anna Wilkinson
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Asma Bashir
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Jerome Robert
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Peter A Cripton
- Department of Mechanical Engineering, International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, Canada
| | - Cheryl L Wellington
- Department of Pathology and Laboratory Medicine, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, 2215 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada.
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28
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Grant DA, Serpa R, Moattari CR, Brown A, Greco T, Prins ML, Teng E. Repeat Mild Traumatic Brain Injury in Adolescent Rats Increases Subsequent β-Amyloid Pathogenesis. J Neurotrauma 2017; 35:94-104. [PMID: 28728464 DOI: 10.1089/neu.2017.5042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Single moderate-to-severe traumatic brain injuries (TBIs) may increase subsequent risk for neurodegenerative disease by facilitating β-amyloid (Aβ) deposition. However, the chronic effects on Aβ pathogenesis of repetitive mild TBIs (rTBI), which are common in adolescents and young adults, remain uncertain. We examined the effects of rTBI sustained during adolescence on subsequent deposition of Aβ pathology in a transgenic APP/PS1 rat model. Transgenic rats received sham or four individual mild TBIs (rTBIs) separated by either 24- or 72-h intervals at post-natal day 35 (before Aβ plaque deposition). Animals were euthanized at 12 months of age and underwent immunohistochemical analyses of Aβ plaque deposition. Significantly greater hippocampal Aβ plaque deposition was observed after rTBI separated by 24 h relative to rTBI separated by 72 h or sham injuries. These increases in hippocampal Aβ plaque load were driven by increases in both plaque number and size. Similar, though less-pronounced, effects were observed in extrahippocampal regions. Increases in Aβ plaque deposition were observed both ipsilaterally and contralaterally to the injury site and in both males and females. rTBIs sustained in adolescence can increase subsequent deposition of Aβ pathology, and these effects are critically dependent on interinjury interval.
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Affiliation(s)
- Daya A Grant
- 1 Department of Neurosurgery, UCLA , Los Angeles, California.,3 Interdeparmental Program for Neuroscience, UCLA , Los Angeles, California
| | - Rebecka Serpa
- 1 Department of Neurosurgery, UCLA , Los Angeles, California
| | - Cameron R Moattari
- 3 Interdeparmental Program for Neuroscience, UCLA , Los Angeles, California
| | - Ari Brown
- 1 Department of Neurosurgery, UCLA , Los Angeles, California
| | - Tiffany Greco
- 1 Department of Neurosurgery, UCLA , Los Angeles, California
| | - Mayumi L Prins
- 1 Department of Neurosurgery, UCLA , Los Angeles, California
| | - Edmond Teng
- 2 Department of Neurology, David Geffen School of Medicine at UCLA, UCLA , Los Angeles, California.,4 Veterans Affairs Greater Los Angeles Healthcare System , Los Angeles, California
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29
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Schimmel SJ, Acosta S, Lozano D. Neuroinflammation in traumatic brain injury: A chronic response to an acute injury. Brain Circ 2017; 3:135-142. [PMID: 30276315 PMCID: PMC6057689 DOI: 10.4103/bc.bc_18_17] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 09/02/2017] [Accepted: 09/05/2017] [Indexed: 02/06/2023] Open
Abstract
Every year, approximately 1.4 million US citizens visit emergency rooms for traumatic brain injuries. Formerly known as an acute injury, chronic neurodegenerative symptoms such as compromised motor skills, decreased cognitive abilities, and emotional and behavioral changes have caused the scientific community to consider chronic aspects of the disorder. The injury causing impact prompts multiple cell death processes, starting with neuronal necrosis, and progressing to various secondary cell death mechanisms. Secondary cell death mechanisms, including excitotoxicity, oxidative stress, mitochondrial dysfunction, blood-brain barrier disruption, and inflammation accompany chronic traumatic brain injury (TBI) and often contribute to long-term disabilities. One hallmark of both acute and chronic TBI is neuroinflammation. In acute stages, neuroinflammation is beneficial and stimulates an anti-inflammatory response to the damage. Conversely, in chronic TBI, excessive inflammation stimulates the aforementioned secondary cell death. Converting inflammatory cells from pro-inflammatory to anti-inflammatory may expand the therapeutic window for treating TBI, as inflammation plays a role in all stages of the injury. By expanding current research on the role of inflammation in TBI, treatment options and clinical outcomes for afflicted individuals may improve. This paper is a review article. Referred literature in this paper has been listed in the references section. The data sets supporting the conclusions of this article are available online by searching various databases, including PubMed. Some original points in this article come from the laboratory practice in our research center and the authors' experiences.
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Affiliation(s)
| | - Sandra Acosta
- Center of Excellence for Aging and Brain, Tampa, FL, USA
| | - Diego Lozano
- School of Medicine, University of Miami School of Medicine, Miami, FL, USA
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30
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Li JM, Huang LL, Liu F, Tang BS, Yan XX. Can brain impermeable BACE1 inhibitors serve as anti-CAA medicine? BMC Neurol 2017; 17:163. [PMID: 28841840 PMCID: PMC5574137 DOI: 10.1186/s12883-017-0942-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 08/14/2017] [Indexed: 12/21/2022] Open
Abstract
Background Cerebral amyloid angiopathy (CAA) is characterized by the deposition of ß-amyloid peptides (Aß) in and surrounding the wall of microvasculature in the central nervous system, together with parenchymal amyloid plaques collectively referred to as cerebral amyloidosis, which occurs in the brain commonly among the elderly and more frequently in patients with Alzheimer’s disease (AD). CAA is associated with vascular injury and may cause devastating neurological outcomes. No therapeutic approach is available for this lesion to date. Main body ß-Secretase 1 (BACE1) is the enzyme initiating Aß production. Brain permeable BACE1 inhibitors targeting primarily at the parenchymal plaque pathology are currently evaluated in clinical trials. This article presents findings in support of a role of BACE1 elevation in the development of CAA, in addition to plaque pathogenesis. The rationale, feasibility, benefit and strategic issues for developing BACE1 inhibitors against CAA are discussed. Brain impermeable compounds are considered preferable as they might exhibit sufficient anti-CAA efficacy without causing significant neuronal/synaptic side effects. Conclusion Early pharmacological intervention to the pathogenesis of CAA is expected to provide significant protection for cerebral vascular health and hence brain health. Brain impermeable BACE1 inhibitors should be optimized and tested as potential anti-CAA therapeutics.
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Affiliation(s)
- Jian-Ming Li
- Department of Neurology & Key Laboratory of Hunan Province in Neurodegenerative Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Neuroscience Research Center, Changsha Medical University, Changsha, Hunan, 410219, China
| | - Li-Ling Huang
- Department of Anatomy and Neurobiology, Central South University School of Basic Medical Science, Changsha, Hunan, 410013, China
| | - Fei Liu
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Bei-Sha Tang
- Department of Neurology & Key Laboratory of Hunan Province in Neurodegenerative Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Xiao-Xin Yan
- Department of Neurology & Key Laboratory of Hunan Province in Neurodegenerative Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China. .,Department of Anatomy and Neurobiology, Central South University School of Basic Medical Science, Changsha, Hunan, 410013, China.
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31
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Lou D, Du Y, Huang D, Cai F, Zhang Y, Li T, Zhou W, Gao H, Song W. Traumatic Brain Injury Alters the Metabolism and Facilitates Alzheimer's Disease in a Murine Model. Mol Neurobiol 2017; 55:4928-4939. [PMID: 28776265 DOI: 10.1007/s12035-017-0687-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 07/11/2017] [Indexed: 12/14/2022]
Abstract
A majority of Alzheimer's disease (AD) cases are sporadic without known cause. People who suffered from traumatic brain injury (TBI) are more likely to develop neurodegeneration and cognitive impairments. However, the role of TBI in pathophysiology of AD remains elusive. The present study intended to explore the effect of TBI on metabolism and its role in AD pathogenesis. We subjected double transgenic AD model mice APP23/PS45 to TBI. We found that TBI promoted β-secretase cleavage of amyloid β precursor protein and amyloid β protein deposition, and exuberated the cognitive impairments in AD mouse models. 1H nuclear magnetic resonance (1H-NMR)-based metabolomics with multivariate analysis was performed to investigate the characteristic metabolites and the related metabolic pathways in the serum and urine samples of the mice. TBI affected the metabolic patterns, methylamine metabolism, and amino acid metabolism in serum samples. Urinary metabolites showed that glycolysis and the tricarboxylic acid (TCA) cycle were perturbed. The results indicate that TBI might facilitate Alzheimer's pathogenesis by altering metabolism and inducing mitochondrial dysfunction. The study suggests that metabolite changes could also serve as biomarkers for TBI-induced neurodegeneration.
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Affiliation(s)
- Dandan Lou
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China.,Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Yao Du
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Daochao Huang
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China.,Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Fang Cai
- Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Yun Zhang
- Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Tinyu Li
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China.,Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Weihui Zhou
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China.,Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Hongchang Gao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Weihong Song
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China. .,Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada.
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Marcet P, Santos N, Borlongan CV. When friend turns foe: central and peripheral neuroinflammation in central nervous system injury. ACTA ACUST UNITED AC 2017; 4:82-92. [PMID: 29670933 PMCID: PMC5901724 DOI: 10.20517/2347-8659.2017.07] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Injury to the central nervous system (CNS) is common, and though it has been well studied, many aspects of traumatic brain injury (TBI) and stroke are poorly understood. TBI and stroke are two pathologic events that can cause severe, immediate impact to the neurostructure and function of the CNS, which has been recognized recently to be exacerbated by the body’s own immune response. Although the brain damage induced by the initial trauma is most likely unsalvageable, the secondary immunologic deterioration of neural tissue gives ample opportunity for therapeutic strategists seeking to mitigate TBI’s secondary detrimental effects. The purpose of this paper is to highlight the cell death mechanisms associated with CNS injury with special emphasis on inflammation. The authors discuss sources of inflammation, and introduce the role of the spleen in the systemic response to inflammation after CNS injury.
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Affiliation(s)
- Paul Marcet
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL 33612, USA
| | - Nicole Santos
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL 33612, USA
| | - Cesar V Borlongan
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL 33612, USA
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Wang KK, Yang Z, Sarkis G, Torres I, Raghavan V. Ubiquitin C-terminal hydrolase-L1 (UCH-L1) as a therapeutic and diagnostic target in neurodegeneration, neurotrauma and neuro-injuries. Expert Opin Ther Targets 2017; 21:627-638. [DOI: 10.1080/14728222.2017.1321635] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Disordered APP metabolism and neurovasculature in trauma and aging: Combined risks for chronic neurodegenerative disorders. Ageing Res Rev 2017; 34:51-63. [PMID: 27829172 DOI: 10.1016/j.arr.2016.11.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/20/2016] [Accepted: 11/04/2016] [Indexed: 11/20/2022]
Abstract
Traumatic brain injury (TBI), advanced age, and cerebral vascular disease are factors conferring increased risk for late onset Alzheimer's disease (AD). These conditions are also related pathologically through multiple interacting mechanisms. The hallmark pathology of AD consists of pathological aggregates of amyloid-β (Aβ) peptides and tau proteins. These molecules are also involved in neuropathology of several other chronic neurodegenerative diseases, and are under intense investigation in the aftermath of TBI as potential contributors to the risk for developing AD and chronic traumatic encephalopathy (CTE). The pathology of TBI is complex and dependent on injury severity, age-at-injury, and length of time between injury and neuropathological evaluation. In addition, the mechanisms influencing pathology and recovery after TBI likely involve genetic/epigenetic factors as well as additional disorders or comorbid states related to age and central and peripheral vascular health. In this regard, dysfunction of the aging neurovascular system could be an important link between TBI and chronic neurodegenerative diseases, either as a precipitating event or related to accumulation of AD-like pathology which is amplified in the context of aging. Thus with advanced age and vascular dysfunction, TBI can trigger self-propagating cycles of neuronal injury, pathological protein aggregation, and synaptic loss resulting in chronic neurodegenerative disease. In this review we discuss evidence supporting TBI and aging as dual, interacting risk factors for AD, and the role of Aβ and cerebral vascular dysfunction in this relationship. Evidence is discussed that Aβ is involved in cyto- and synapto-toxicity after severe TBI, and that its chronic effects are potentiated by aging and impaired cerebral vascular function. From a therapeutic perspective, we emphasize that in the fields of TBI- and aging-related neurodegeneration protective strategies should include preservation of neurovascular function.
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Ma MW, Wang J, Zhang Q, Wang R, Dhandapani KM, Vadlamudi RK, Brann DW. NADPH oxidase in brain injury and neurodegenerative disorders. Mol Neurodegener 2017; 12:7. [PMID: 28095923 PMCID: PMC5240251 DOI: 10.1186/s13024-017-0150-7] [Citation(s) in RCA: 285] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 01/05/2017] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress is a common denominator in the pathology of neurodegenerative disorders such as Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, amyotrophic lateral sclerosis, and multiple sclerosis, as well as in ischemic and traumatic brain injury. The brain is highly vulnerable to oxidative damage due to its high metabolic demand. However, therapies attempting to scavenge free radicals have shown little success. By shifting the focus to inhibit the generation of damaging free radicals, recent studies have identified NADPH oxidase as a major contributor to disease pathology. NADPH oxidase has the primary function to generate free radicals. In particular, there is growing evidence that the isoforms NOX1, NOX2, and NOX4 can be upregulated by a variety of neurodegenerative factors. The majority of recent studies have shown that genetic and pharmacological inhibition of NADPH oxidase enzymes are neuroprotective and able to reduce detrimental aspects of pathology following ischemic and traumatic brain injury, as well as in chronic neurodegenerative disorders. This review aims to summarize evidence supporting the role of NADPH oxidase in the pathology of these neurological disorders, explores pharmacological strategies of targeting this major oxidative stress pathway, and outlines obstacles that need to be overcome for successful translation of these therapies to the clinic.
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Affiliation(s)
- Merry W Ma
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA, 30904, USA.,Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, 1120 Fifteenth Street, Augusta, GA, 30912, USA
| | - Jing Wang
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA, 30904, USA.,Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, 1120 Fifteenth Street, Augusta, GA, 30912, USA
| | - Quanguang Zhang
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA, 30904, USA.,Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, 1120 Fifteenth Street, Augusta, GA, 30912, USA
| | - Ruimin Wang
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA, 30904, USA.,Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, 1120 Fifteenth Street, Augusta, GA, 30912, USA
| | - Krishnan M Dhandapani
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA, 30904, USA.,Department of Neurosurgery, Medical College of Georgia, Augusta University, 1120 Fifteenth Street, Augusta, GA, 30912, USA
| | - Ratna K Vadlamudi
- Department of Obstetrics and Gynecology, University of Texas Health Science Center, 7703 Medical Drive, San Antonio, TX, 78229, USA
| | - Darrell W Brann
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA, 30904, USA. .,Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, 1120 Fifteenth Street, Augusta, GA, 30912, USA.
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Skaper SD, Facci L, Zusso M, Giusti P. Neuroinflammation, Mast Cells, and Glia: Dangerous Liaisons. Neuroscientist 2017; 23:478-498. [PMID: 29283023 DOI: 10.1177/1073858416687249] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The perspective of neuroinflammation as an epiphenomenon following neuron damage is being replaced by the awareness of glia and their importance in neural functions and disorders. Systemic inflammation generates signals that communicate with the brain and leads to changes in metabolism and behavior, with microglia assuming a pro-inflammatory phenotype. Identification of potential peripheral-to-central cellular links is thus a critical step in designing effective therapeutics. Mast cells may fulfill such a role. These resident immune cells are found close to and within peripheral nerves and in brain parenchyma/meninges, where they exercise a key role in orchestrating the inflammatory process from initiation through chronic activation. Mast cells and glia engage in crosstalk that contributes to accelerate disease progression; such interactions become exaggerated with aging and increased cell sensitivity to stress. Emerging evidence for oligodendrocytes, independent of myelin and support of axonal integrity, points to their having strong immune functions, innate immune receptor expression, and production/response to chemokines and cytokines that modulate immune responses in the central nervous system while engaging in crosstalk with microglia and astrocytes. In this review, we summarize the findings related to our understanding of the biology and cellular signaling mechanisms of neuroinflammation, with emphasis on mast cell-glia interactions.
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Affiliation(s)
- Stephen D Skaper
- 1 Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Italy
| | - Laura Facci
- 1 Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Italy
| | - Morena Zusso
- 1 Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Italy
| | - Pietro Giusti
- 1 Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Italy
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Acosta SA, Tajiri N, Sanberg PR, Kaneko Y, Borlongan CV. Increased Amyloid Precursor Protein and Tau Expression Manifests as Key Secondary Cell Death in Chronic Traumatic Brain Injury. J Cell Physiol 2016; 232:665-677. [PMID: 27699791 PMCID: PMC5484295 DOI: 10.1002/jcp.25629] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 10/03/2016] [Indexed: 11/15/2022]
Abstract
In testing the hypothesis of Alzheimer's disease (AD)‐like pathology in late stage traumatic brain injury (TBI), we evaluated AD pathological markers in late stage TBI model. Sprague–Dawley male rats were subjected to moderate controlled cortical impact (CCI) injury, and 6 months later euthanized and brain tissues harvested. Results from H&E staining revealed significant 33% and 10% reduction in the ipsilateral and contralateral hippocampal CA3 interneurons, increased MHCII‐activated inflammatory cells in many gray matter (8–20‐fold increase) and white matter (6–30‐fold increased) regions of both the ipsilateral and contralateral hemispheres, decreased cell cycle regulating protein marker by 1.6‐ and 1‐fold in the SVZ and a 2.3‐ and 1.5‐fold reductions in the ipsilateral and contralateral dentate gyrus, diminution of immature neuronal marker by two‐ and onefold in both the ipsilateral and contralateral SVZ and dentate gyrus, and amplified amyloid precursor protein (APP) distribution volumes in white matter including corpus callosum, fornix, and internal capsule (4–38‐fold increase), as well as in the cortical gray matter, such as the striatum hilus, SVZ, and dentate gyrus (6–40‐fold increase) in TBI animals compared to controls (P's < 0.001). Surrogate AD‐like phenotypic markers revealed a significant accumulation of phosphorylated tau (AT8) and oligomeric tau (T22) within the neuronal cell bodies in ipsilateral and contralateral cortex, and dentate gyrus relative to sham control, further supporting the rampant neurodegenerative pathology in TBI secondary cell death. These findings indicate that AD‐like pathological features may prove to be valuable markers and therapeutic targets for late stage TBI. J. Cell. Physiol. 232: 665–677, 2017. © 2016 The Authors. Journal of Cellular Physiology Published by Wiley Periodicals, Inc.
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Affiliation(s)
- Sandra A Acosta
- Department of Neurosurgery and Brain Repair, Center of Excellence for Aging and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, Florida
| | - Naoki Tajiri
- Department of Neurosurgery and Brain Repair, Center of Excellence for Aging and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, Florida
| | - Paul R Sanberg
- Office of Research and Innovation, Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, Florida
| | - Yuji Kaneko
- Department of Neurosurgery and Brain Repair, Center of Excellence for Aging and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, Florida
| | - Cesar V Borlongan
- Department of Neurosurgery and Brain Repair, Center of Excellence for Aging and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, Florida
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Cartagena CM, Mountney A, Hwang H, Swiercz A, Rammelkamp Z, Boutte AM, Shear DA, Tortella FC, Schmid KE. Subacute Changes in Cleavage Processing of Amyloid Precursor Protein and Tau following Penetrating Traumatic Brain Injury. PLoS One 2016; 11:e0158576. [PMID: 27428544 PMCID: PMC4948774 DOI: 10.1371/journal.pone.0158576] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 06/19/2016] [Indexed: 01/22/2023] Open
Abstract
Traumatic brain injury (TBI) is an established risk factor for the development of Alzheimer's disease (AD). Here the effects of severe penetrating TBI on APP and tau cleavage processing were investigated in a rodent model of penetrating ballistic-like brain injury (PBBI). PBBI was induced by stereotactically inserting a perforated steel probe through the right frontal cortex of the anesthetized rat and rapidly inflating/deflating the probe's elastic tubing into an elliptical shaped balloon to 10% of total rat brain volume causing temporary cavitation injury. Separate animals underwent probe injury (PrI) alone without balloon inflation. Shams underwent craniectomy. Brain tissue was collected acutely (4h, 24h, 3d) and subacutely (7d) post-injury and analyzed by immunoblot for full length APP (APP-FL) and APP beta c-terminal fragments (βCTFs), full length tau (tau-FL) and tau truncation fragments and at 7d for cytotoxic Beta amyloid (Aβ) peptides Aβ40 and Aβ42 analysis. APP-FL was significantly decreased at 3d and 7d following PBBI whereas APP βCTFs were significantly elevated by 4h post-injury and remained elevated through 7d post-injury. Effects on βCTFs were mirrored with PrI, albeit to a lesser extent. Aβ40 and Aβ42 were significantly elevated at 7d following PBBI and PrI. Tau-FL decreased substantially 3d and 7d post-PBBI and PrI. Importantly, a 22 kDa tau fragment (tau22), similar to that found in AD, was significantly elevated by 4h and remained elevated through 7d post-injury. Thus both APP and tau cleavage was dramatically altered in the acute and subacute periods post-injury. As cleavage of these proteins has also been implicated in AD, TBI pathology shown here may set the stage for the later development of AD or other tauopathies.
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Affiliation(s)
- Casandra M. Cartagena
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Andrea Mountney
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Hye Hwang
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Adam Swiercz
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Zoe Rammelkamp
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Angela M. Boutte
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Deborah A. Shear
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Frank C. Tortella
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Kara E. Schmid
- Brain Trauma Neuroprotection and Neurorestoration Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
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Witcher KG, Eiferman DS, Godbout JP. Priming the inflammatory pump of the CNS after traumatic brain injury. Trends Neurosci 2016; 38:609-620. [PMID: 26442695 DOI: 10.1016/j.tins.2015.08.002] [Citation(s) in RCA: 160] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/14/2015] [Accepted: 08/18/2015] [Indexed: 12/14/2022]
Abstract
Traumatic brain injury (TBI) can lead to secondary neuropsychiatric problems that develop and persist years after injury. Mounting evidence indicates that neuroinflammatory processes progress after the initial head injury and worsen with time. Microglia contribute to this inflammation by maintaining a primed profile long after the acute effects of the injury have dissipated. This may set the stage for glial dysfunction and hyperactivity to challenges including subsequent head injury, stress, or induction of a peripheral immune response. This review discusses the evidence that microglia become primed following TBI and how this corresponds with vulnerability to a 'second hit' and subsequent neuropsychiatric and neurodegenerative complications.
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Affiliation(s)
- Kristina G Witcher
- Department of Neuroscience, The Ohio State University, 333 West 10th Avenue, Columbus, OH, USA
| | - Daniel S Eiferman
- Department of Surgery, The Ohio State University, 395 West 12th Avenue, Columbus, OH, USA
| | - Jonathan P Godbout
- Department of Neuroscience, The Ohio State University, 333 West 10th Avenue, Columbus, OH, USA; Center for Brain and Spinal Cord Repair, The Ohio State University, 460 West 12th Avenue, Columbus, OH, USA; Institute for Behavioral Medicine Research, The Ohio State University, 460 Medical Center Drive, Columbus, OH, USA.
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40
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Traumatic brain injury accelerates amyloid-β deposition and impairs spatial learning in the triple-transgenic mouse model of Alzheimer's disease. Neurosci Lett 2016; 629:62-67. [PMID: 27373531 DOI: 10.1016/j.neulet.2016.06.066] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 06/22/2016] [Accepted: 06/29/2016] [Indexed: 11/21/2022]
Abstract
Several pathological and epidemiological studies have demonstrated a possible relationship between traumatic brain injury (TBI) and Alzheimer's disease (AD). However, the exact contribution of TBI to AD onset and progression is unclear. Hence, we examined AD-related histopathological changes and cognitive impairment after TBI in triple transgenic (3×Tg)-AD model mice. Five- to seven-month-old 3×Tg-AD model mice were subjected to either TBI by the weight-drop method or a sham treatment. In the 3×Tg-AD mice subjected to TBI, the spatial learning was not significantly different 7 days after TBI compared to that of the sham-treated 3×Tg-AD mice. However, 28 days after TBI, the 3×Tg-AD mice exhibited significantly lower spatial learning than the sham-treated 3×Tg-AD mice. Correspondingly, while a few amyloid-β (Aβ) plaques were observed in both sham-treated and TBI-treated 3×Tg-AD mouse hippocampus 7 days after TBI, the Aβ deposition was significantly greater in 3×Tg-AD mice 28 days after TBI. Thus, we demonstrated that TBI induced a significant increase in hippocampal Aβ deposition 28 days after TBI compared to that of the control animals, which was associated with worse spatial learning ability in 3×Tg-AD mice. The present study suggests that TBI could be a risk factor for accelerated AD progression, particularly when genetic and hereditary predispositions are involved.
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Bird SM, Sohrabi HR, Sutton TA, Weinborn M, Rainey-Smith SR, Brown B, Patterson L, Taddei K, Gupta V, Carruthers M, Lenzo N, Knuckey N, Bucks RS, Verdile G, Martins RN. Cerebral amyloid-β accumulation and deposition following traumatic brain injury--A narrative review and meta-analysis of animal studies. Neurosci Biobehav Rev 2016; 64:215-28. [PMID: 26899257 DOI: 10.1016/j.neubiorev.2016.01.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 01/15/2016] [Indexed: 10/22/2022]
Abstract
Traumatic brain injury (TBI) increases the risk of neurodegenerative disorders many years post-injury. However, molecular mechanisms underlying the relationship between TBI and neurodegenerative diseases, such as Alzheimer's disease (AD), remain to be elucidated. Nevertheless, previous studies have demonstrated a link between TBI and increased amyloid-β (Aβ), a protein involved in AD pathogenesis. Here, we review animal studies that measured Aβ levels following TBI. In addition, from a pool of initially identified 1209 published papers, we examined data from 19 eligible animal model studies using a meta-analytic approach. We found an acute increase in cerebral Aβ levels ranging from 24h to one month following TBI (overall log OR=2.97 ± 0.40, p<0.001). These findings may contribute to further understanding the relationship between TBI and future dementia risk. The methodological inconsistencies of the studies discussed in this review suggest the need for improved and more standardised data collection and study design, in order to properly elucidate the role of TBI in the expression and accumulation of Aβ.
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Affiliation(s)
- Sabine M Bird
- School of Psychiatry and Clinical Neurosciences, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 WA, Australia; Sir James McCusker Alzheimer's Disease Research Unit (Hollywood Private Hospital), 115 Monash Avenue, Nedlands, 6009 WA, Australia
| | - Hamid R Sohrabi
- School of Psychiatry and Clinical Neurosciences, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 WA, Australia; Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, 6027 WA, Australia; Sir James McCusker Alzheimer's Disease Research Unit (Hollywood Private Hospital), 115 Monash Avenue, Nedlands, 6009 WA, Australia
| | - Thomas A Sutton
- School of Psychiatry and Clinical Neurosciences, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 WA, Australia
| | - Michael Weinborn
- Sir James McCusker Alzheimer's Disease Research Unit (Hollywood Private Hospital), 115 Monash Avenue, Nedlands, 6009 WA, Australia; School of Psychology, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 WA, Australia
| | - Stephanie R Rainey-Smith
- Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, 6027 WA, Australia; Sir James McCusker Alzheimer's Disease Research Unit (Hollywood Private Hospital), 115 Monash Avenue, Nedlands, 6009 WA, Australia
| | - Belinda Brown
- Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, 6027 WA, Australia; Sir James McCusker Alzheimer's Disease Research Unit (Hollywood Private Hospital), 115 Monash Avenue, Nedlands, 6009 WA, Australia
| | - Leigh Patterson
- Sir James McCusker Alzheimer's Disease Research Unit (Hollywood Private Hospital), 115 Monash Avenue, Nedlands, 6009 WA, Australia
| | - Kevin Taddei
- Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, 6027 WA, Australia; Sir James McCusker Alzheimer's Disease Research Unit (Hollywood Private Hospital), 115 Monash Avenue, Nedlands, 6009 WA, Australia
| | - Veer Gupta
- Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, 6027 WA, Australia; Sir James McCusker Alzheimer's Disease Research Unit (Hollywood Private Hospital), 115 Monash Avenue, Nedlands, 6009 WA, Australia
| | - Malcolm Carruthers
- Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, 6027 WA, Australia; Centre for Men's Health, 96 Harley Street, London, W1G 7HY, United Kingdom
| | - Nat Lenzo
- Oceanic Medical Imaging, Hollywood Medical Centre, 85 Monash Avenue, Nedlands, 6009 WA, Australia
| | - Neville Knuckey
- Centre for Neuromuscular and Neurological Disorders (CNND), University of Western Australia, 35 Stirling Hwy, Crawley, 6009 WA, Australia
| | - Romola S Bucks
- School of Psychology, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 WA, Australia
| | - Giuseppe Verdile
- School of Psychiatry and Clinical Neurosciences, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 WA, Australia; Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, 6027 WA, Australia; School of Biomedical Sciences, CHIRI Biosciences, Curtin University, Kent Street, Bentley, 6102 WA, Australia
| | - Ralph N Martins
- School of Psychiatry and Clinical Neurosciences, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 WA, Australia; Centre of Excellence for Alzheimer's Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, 6027 WA, Australia; Sir James McCusker Alzheimer's Disease Research Unit (Hollywood Private Hospital), 115 Monash Avenue, Nedlands, 6009 WA, Australia.
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Pabón MM, Acosta S, Guedes VA, Tajiri N, Kaneko Y, Borlongan CV. Brain Region-Specific Histopathological Effects of Varying Trajectories of Controlled Cortical Impact Injury Model of Traumatic Brain Injury. CNS Neurosci Ther 2016; 22:200-11. [PMID: 26775604 PMCID: PMC4849201 DOI: 10.1111/cns.12485] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 10/23/2015] [Accepted: 10/26/2015] [Indexed: 12/11/2022] Open
Abstract
AIMS Traumatic brain injury (TBI) occurs when the head is impacted by an external force causing either a closed or penetrating head injury through a direct or accelerating impact. In laboratory research, most of the TBI animal models focus on a specific region to cause brain injury, but traumatic injuries in patients do not always impact the same brain regions. The aim of this study was to examine the histopathological effects of different angles of mechanical injury by manipulating the trajectory of the controlled cortical impact injury (CCI) model in adult Sprague-Dawley rats. METHODS The CCI model was manipulated as follows: conventional targeting of the frontal cortex, farthest right angle targeting the frontal cortex, closest right angle targeting the frontal cortex, olfactory bulb injury, and cerebellar injury. Three days after TBI, brains were harvested to analyze cortical and hippocampal cell loss, neuroinflammatory response, and neurogenesis via immunohistochemistry. RESULTS Results revealed cell death in the M1 region of the cortex across all groups, and in the CA3 area from olfactory bulb injury group. This observed cell death involved upregulation of inflammation as evidenced by rampant MHCII overexpression in cortex, but largely spared Ki-67/nestin neurogenesis in the hippocampus during this acute phase of TBI. CONCLUSION These results indicate a trajectory-dependent injury characterized by exacerbation of inflammation and different levels of impaired cell proliferation and neurogenesis. Such multiple brain areas showing varying levels of cell death after region-specific CCI model may closely mimic the clinical manifestations of TBI.
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Affiliation(s)
- Mibel M Pabón
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida College of Medicine, Tampa, FL, USA
| | - Sandra Acosta
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida College of Medicine, Tampa, FL, USA
| | - Vivian A Guedes
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida College of Medicine, Tampa, FL, USA
| | - Naoki Tajiri
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida College of Medicine, Tampa, FL, USA
| | - Yuji Kaneko
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida College of Medicine, Tampa, FL, USA
| | - Cesar V Borlongan
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida College of Medicine, Tampa, FL, USA
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Traumatic Brain Injury Increases the Expression of Nos1, Aβ Clearance, and Epileptogenesis in APP/PS1 Mouse Model of Alzheimer’s Disease. Mol Neurobiol 2015; 53:7010-7027. [DOI: 10.1007/s12035-015-9578-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 11/29/2015] [Indexed: 11/26/2022]
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Kokiko-Cochran O, Ransohoff L, Veenstra M, Lee S, Saber M, Sikora M, Teknipp R, Xu G, Bemiller S, Wilson G, Crish S, Bhaskar K, Lee YS, Ransohoff RM, Lamb BT. Altered Neuroinflammation and Behavior after Traumatic Brain Injury in a Mouse Model of Alzheimer's Disease. J Neurotrauma 2015; 33:625-40. [PMID: 26414955 DOI: 10.1089/neu.2015.3970] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Traumatic brain injury (TBI) has acute and chronic sequelae, including an increased risk for the development of Alzheimer's disease (AD). TBI-associated neuroinflammation is characterized by activation of brain-resident microglia and infiltration of monocytes; however, recent studies have implicated beta-amyloid as a major manipulator of the inflammatory response. To examine neuroinflammation after TBI and development of AD-like features, these studies examined the effects of TBI in the presence and absence of beta-amyloid. The R1.40 mouse model of cerebral amyloidosis was used, with a focus on time points well before robust AD pathologies. Unexpectedly, in R1.40 mice, the acute neuroinflammatory response to TBI was strikingly muted, with reduced numbers of CNS myeloid cells acquiring a macrophage phenotype and decreased expression of inflammatory cytokines. At chronic time points, macrophage activation substantially declined in non-Tg TBI mice; however, it was relatively unchanged in R1.40 TBI mice. The persistent inflammatory response coincided with significant tissue loss between 3 and 120 days post-injury in R1.40 TBI mice, which was not observed in non-Tg TBI mice. Surprisingly, inflammatory cytokine expression was enhanced in R1.40 mice compared with non-Tg mice, regardless of injury group. Although R1.40 TBI mice demonstrated task-specific deficits in cognition, overall functional recovery was similar to non-Tg TBI mice. These findings suggest that accumulating beta-amyloid leads to an altered post-injury macrophage response at acute and chronic time points. Together, these studies emphasize the role of post-injury neuroinflammation in regulating long-term sequelae after TBI and also support recent studies implicating beta-amyloid as an immunomodulator.
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Affiliation(s)
| | - Lena Ransohoff
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio
| | - Mike Veenstra
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio
| | - Sungho Lee
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio
| | - Maha Saber
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio
| | - Matt Sikora
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio
| | - Ryan Teknipp
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio
| | - Guixiang Xu
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio
| | - Shane Bemiller
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio
| | - Gina Wilson
- 2 Department of Pharmaceutical Science, Northeast Ohio Medical University , Rootstown, Ohio
| | - Samuel Crish
- 2 Department of Pharmaceutical Science, Northeast Ohio Medical University , Rootstown, Ohio
| | - Kiran Bhaskar
- 3 Department of Molecular Genetics Microbiology and Neurology, University of New Mexico , Albuquerque New Mexico
| | - Yu-Shang Lee
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio
| | | | - Bruce T Lamb
- 1 Department of Neurosciences, Cleveland Clinic , Cleveland, Ohio.,5 Department of Genetics and Department of Neurosciences, Case Western Reserve University , Cleveland, Ohio
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Closed head injury in an age-related Alzheimer mouse model leads to an altered neuroinflammatory response and persistent cognitive impairment. J Neurosci 2015; 35:6554-69. [PMID: 25904805 DOI: 10.1523/jneurosci.0291-15.2015] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Epidemiological studies have associated increased risk of Alzheimer's disease (AD)-related clinical symptoms with a medical history of head injury. Currently, little is known about pathophysiology mechanisms linked to this association. Persistent neuroinflammation is one outcome observed in patients after a single head injury. Neuroinflammation is also present early in relevant brain regions during AD pathology progression. In addition, previous mechanistic studies in animal models link neuroinflammation as a contributor to neuropathology and cognitive impairment in traumatic brain injury (TBI) or AD-related models. Therefore, we explored the potential interplay of neuroinflammatory responses in TBI and AD by analysis of the temporal neuroinflammatory changes after TBI in an AD model, the APP/PS1 knock-in (KI) mouse. Discrete temporal aspects of astrocyte, cytokine, and chemokine responses in the injured KI mice were delayed compared with the injured wild-type mice, with a peak neuroinflammatory response in the injured KI mice occurring at 7 d after injury. The neuroinflammatory responses were more persistent in the injured KI mice, leading to a chronic neuroinflammation. At late time points after injury, KI mice exhibited a significant impairment in radial arm water maze performance compared with sham KI mice or injured wild-type mice. Intervention with a small-molecule experimental therapeutic (MW151) that selectively attenuates proinflammatory cytokine production yielded improved cognitive behavior outcomes, consistent with a link between neuroinflammatory responses and altered risk for AD-associated pathology changes with head injury.
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Abstract
Neurodegenerative disease in patients with chronic obstructive pulmonary disease (COPD) was observed. We aim to clarify the risk of dementia in patients with COPD. The study used claims data from Taiwan's National Health Insurance Research Database. Subjects were those who received a discharge diagnosis of COPD between January 1, 2002 and December 31, 2011. Only the first hospitalization was enrolled, and the index date was the first day of admission. Patients younger than 40 years or those with a history of Alzheimer disease (AD) or Parkinson disease (PD) before the index date were excluded. The patients with COPD were then followed until receiving a diagnosis of AD or PD, death, or the end of the study. Control subjects were selected from hospitalized patients without a history of COPD, AD, or PD and were matched according to age (±3 years), gender, and the year of admission at a 2:1 ratio. The comorbidities were measured from 1 year before the index date based on the ICD-9-CM codes. The study included 8640 patients with COPD and a mean age of 68.76 (±10.74) years. The adjusted hazard ratio of developing dementia (AD or PD) was 1.74 (95% confidence interval = 1.55-1.96) in patients with COPD compared with patients without COPD after adjusting for age, gender, and comorbidities. This nationwide cohort study demonstrates that the risk of dementia, including AD and PD, is significantly increased in patients with COPD compared with individuals in the general population.
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Affiliation(s)
- Kuang-Ming Liao
- From the Department of Internal Medicine, Chi Mei Medical Center, Chiali (K-ML); Institute of Clinical Pharmacy and Pharmaceutical Sciences, National Cheng Kung University (K-ML); Department of Medical Research, Chi Mei Medical Center (C-HH); Department of Hospital and Health Care Administration, Chia Nan University of Pharmacy and Science (C-HH); Department of Chest Medicine, Chi Mei Medical Center (S-CK); Department of Public Health, College of Medicine, National Cheng Kung University, Tainan (C-YL); and Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan (C-YL)
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47
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Portbury SD, Adlard PA. Traumatic Brain Injury, Chronic Traumatic Encephalopathy, and Alzheimer’s Disease: Common Pathologies Potentiated by Altered Zinc Homeostasis. J Alzheimers Dis 2015; 46:297-311. [DOI: 10.3233/jad-143048] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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48
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Heneka MT, Carson MJ, El Khoury J, Landreth GE, Brosseron F, Feinstein DL, Jacobs AH, Wyss-Coray T, Vitorica J, Ransohoff RM, Herrup K, Frautschy SA, Finsen B, Brown GC, Verkhratsky A, Yamanaka K, Koistinaho J, Latz E, Halle A, Petzold GC, Town T, Morgan D, Shinohara ML, Perry VH, Holmes C, Bazan NG, Brooks DJ, Hunot S, Joseph B, Deigendesch N, Garaschuk O, Boddeke E, Dinarello CA, Breitner JC, Cole GM, Golenbock DT, Kummer MP. Neuroinflammation in Alzheimer's disease. Lancet Neurol 2015; 14:388-405. [PMID: 25792098 DOI: 10.1016/s1474-4422(15)70016-5] [Citation(s) in RCA: 3698] [Impact Index Per Article: 410.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Increasing evidence suggests that Alzheimer's disease pathogenesis is not restricted to the neuronal compartment, but includes strong interactions with immunological mechanisms in the brain. Misfolded and aggregated proteins bind to pattern recognition receptors on microglia and astroglia, and trigger an innate immune response characterised by release of inflammatory mediators, which contribute to disease progression and severity. Genome-wide analysis suggests that several genes that increase the risk for sporadic Alzheimer's disease encode factors that regulate glial clearance of misfolded proteins and the inflammatory reaction. External factors, including systemic inflammation and obesity, are likely to interfere with immunological processes of the brain and further promote disease progression. Modulation of risk factors and targeting of these immune mechanisms could lead to future therapeutic or preventive strategies for Alzheimer's disease.
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Affiliation(s)
- Michael T Heneka
- Department of Neurology, University Hospital Bonn, University of Bonn, Bonn, Germany; German Center for Neurodegnerative Diseases (DZNE), Bonn, Germany.
| | - Monica J Carson
- Division of Biomedical Sciences, Center for Glial-Neuronal Interactions, University of California, Riverside, CA, USA
| | - Joseph El Khoury
- Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Gary E Landreth
- Alzheimer Research Laboratory, Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | | | | | - Andreas H Jacobs
- Department of Geriatrics, Johanniter Hospital, Bonn, Germany; European Institute for Molecular Imaging (EIMI) at the Westfalian Wilhelms University (WWU), Münster, Germany
| | - Tony Wyss-Coray
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA; Center for Tissue Regeneration, Repair, and Restoration, VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Javier Vitorica
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio, Consejo Superior de Investigaciones Cientificas Universidad de Sevilla, Sevilla, Spain
| | - Richard M Ransohoff
- Department of Neuroscience, Neuroinflammation Research Center, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Karl Herrup
- Division of Life Science, Hong Kong University of Science and Technology, Hong Kong
| | - Sally A Frautschy
- Department of Neurology, David Geffen School of Medicine at the University of California, Los Angeles, the Geriatric, Research, and Clinical Center, Greater Los Angeles Veterans Affairs Healthcare System, Los Angeles, CA, USA
| | - Bente Finsen
- Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Guy C Brown
- Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - Alexei Verkhratsky
- Faculty of Life Sciences, The University of Manchester, Manchester, UK; Achucarro Center for Neuroscience, Basque Foundation for Science (IKERBASQUE), Bilbao, Spain; Department of Neurosciences, University of the Basque Country UPV/EHU (Euskal Herriko Unibertsitatea/Universidad del País Vasco) and CIBERNED (Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas), Leioa, Spain
| | - Koji Yamanaka
- Research Institute of Environmental Medicine, Nagoya University/RIKEN Brain Science Institute, Wako-shi, Japan
| | - Jari Koistinaho
- Department of Neurobiology, AI Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Eicke Latz
- German Center for Neurodegnerative Diseases (DZNE), Bonn, Germany; Institute of Innate Immunity, University of Bonn, Bonn, Germany; Department of InfectiousDiseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Annett Halle
- Max-Planck Research Group Neuroimmunology, Center of Advanced European Studies and Research (CAESAR), Bonn, Germany
| | - Gabor C Petzold
- Department of Neurology, University Hospital Bonn, University of Bonn, Bonn, Germany; German Center for Neurodegnerative Diseases (DZNE), Bonn, Germany
| | - Terrence Town
- Zilkha Neurogenetic Institute, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Dave Morgan
- Department of Molecular Pharmacology and Physiology, Byrd Alzheimer's Institute, University of South Florida College of Medicine, Tampa, FL, USA
| | - Mari L Shinohara
- Department of Immunology, Duke University Medical Center, Durham, NC, USA
| | - V Hugh Perry
- School of Biological Sciences, Southampton General Hospital, Southampton, UK
| | - Clive Holmes
- Clinical and Experimental Science, University of Southampton, Southampton, UK; Memory Assessment and Research Centre, Moorgreen Hospital, Southern Health Foundation Trust, Southampton, UK
| | - Nicolas G Bazan
- Louisiana State University Neuroscience Center of Excellence, Louisiana State University Health Sciences Center School of Medicine in New Orleans, LA, USA
| | - David J Brooks
- Division of Experimental Medicine, Imperial College London, Hammersmith Hospital, London, UK
| | - Stéphane Hunot
- Centre National de la Recherche Scientifique (CNRS), UMR 7225, Experimental Therapeutics of Neurodegeneration, Paris, France
| | - Bertrand Joseph
- Department of Oncology Pathology, Cancer Centrum Karolinska, Karolinska Institutet, Stockholm, Sweden
| | - Nikolaus Deigendesch
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Berlin, Germany
| | - Olga Garaschuk
- Institute of Physiology II, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Erik Boddeke
- Department of Neuroscience, University of Groningen, University Medical Centre Groningen, Groningen, Netherlands
| | | | - John C Breitner
- Centre for Studies on Prevention of Alzheimer's Disease, Douglas Mental Health University Institute, and the McGill University Faculty of Medicine, Montreal, Quebec, Canada
| | - Greg M Cole
- Department of Neurology, David Geffen School of Medicine at the University of California, Los Angeles, the Geriatric, Research, and Clinical Center, Greater Los Angeles Veterans Affairs Healthcare System, Los Angeles, CA, USA
| | - Douglas T Golenbock
- Department of InfectiousDiseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Markus P Kummer
- Department of Neurology, University Hospital Bonn, University of Bonn, Bonn, Germany
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Daulatzai MA. “Boomerang Neuropathology” of Late-Onset Alzheimer’s Disease is Shrouded in Harmful “BDDS”: Breathing, Diet, Drinking, and Sleep During Aging. Neurotox Res 2015; 28:55-93. [DOI: 10.1007/s12640-015-9528-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 04/03/2015] [Accepted: 04/03/2015] [Indexed: 12/12/2022]
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50
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Barrientos RM, Kitt MM, Watkins LR, Maier SF. Neuroinflammation in the normal aging hippocampus. Neuroscience 2015; 309:84-99. [PMID: 25772789 DOI: 10.1016/j.neuroscience.2015.03.007] [Citation(s) in RCA: 228] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 02/25/2015] [Accepted: 03/04/2015] [Indexed: 02/01/2023]
Abstract
A consequence of normal aging is a greater susceptibility to memory impairments following an immune challenge such as infection, surgery, or traumatic brain injury. The neuroinflammatory response, produced by these challenges results in increased and prolonged production of pro-inflammatory cytokines in the otherwise healthy aged brain. Here we discuss the mechanisms by which long-lasting elevations in pro-inflammatory cytokines in the hippocampus produce memory impairments. Sensitized microglia are a primary source of this exaggerated neuroinflammatory response and appear to be a hallmark of the normal aging brain. We review the current understanding of the causes and effects of normal aging-induced microglial sensitization, including dysregulations of the neuroendocrine system, potentiation of neuroinflammatory responses following an immune challenge, and the impairment of memories. We end with a discussion of therapeutic approaches to prevent these deleterious effects.
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Affiliation(s)
- R M Barrientos
- Dept. of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA.
| | - M M Kitt
- Dept. of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - L R Watkins
- Dept. of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - S F Maier
- Dept. of Psychology and Neuroscience, Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
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