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Guo Y, Zhao S, Hou X, Nie S, Xu S, Hong Y, Chen Y, Guo S, Liu X, Xia Z. Insidious Attentional Deficits in Patients With Cerebral Small Vessel Disease Revealed by Attention Network Test. Front Neurol 2022; 13:865307. [PMID: 35795794 PMCID: PMC9251063 DOI: 10.3389/fneur.2022.865307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
Background Several reports have indicated potential cognitive decline for cerebral small vessel disease (CSVD), especially in attention domain, whereas the attentional function at network level is still elusive. In this study, we used the attention network test (ANT) paradigm to characterize the efficiency of the alerting, orienting, and executive control networks in patients with CSVD and explore possible correlations between attention network efficiencies and obtained CSVD total score. Methods A total of 31 patients with CSVD and 30 healthy controls matched for age, gender, and education level were recruited. After neuropsychological and anxiety/depression/somatization assessments, an original version of ANT containing different cue conditions and target stimuli was used to investigate independent attentional components, and then, behavioral performance (accuracy and reaction time) and network efficacy were recorded and analyzed. Results Assessed by traditional neuropsychological scale (MoCA), we did not find difference between groups on general cognition. Nevertheless, the overall reaction time to targets of ANT was markedly prolonged in patients with CSVD, and similar phenomenon was observed for overall accuracy on ANT. Moreover, patients showed significantly lower orienting and executive control network efficiencies compared with controls, while not for alerting network. These impairments were correlated with total CSVD burdens, but not with anxiety, depression, or somatization. Conclusions Although general and almost all individual cognitive function evaluated by MoCA seemed to remain intact, the orienting and executive control function was impaired in individuals with CSVD, which was modulated by lesion grades. Our observations implied insidious attentional deficits regarding CSVD. Given this, considering its simplicity and sensitivity, ANT could serve as an attractive tool for early diagnosis of cognitive dysfunction. Further investigations on the availability of ANT detection for CSVD are warranted.
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Affiliation(s)
- Yunliang Guo
- Department of Geriatric Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Neurology, Liaocheng People's Hospital and Liaocheng Clinical School of Shandong First Medical University, Liaocheng, China
- Department of Geriatric Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- Department of Geriatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Anti-Aging Monitoring Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Shuo Zhao
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xunyao Hou
- Department of Geriatric Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Geriatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Anti-Aging Monitoring Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Shanjing Nie
- Department of Geriatric Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Geriatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Anti-Aging Monitoring Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Song Xu
- Department of Geriatric Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Geriatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Anti-Aging Monitoring Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Yan Hong
- Department of Geriatric Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Geriatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Anti-Aging Monitoring Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Yali Chen
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Shougang Guo
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xueping Liu
- Department of Geriatric Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Geriatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Anti-Aging Monitoring Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Xueping Liu
| | - Zhangyong Xia
- Department of Neurology, Liaocheng People's Hospital and Liaocheng Clinical School of Shandong First Medical University, Liaocheng, China
- Department of Neurology, Liaocheng People's Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- *Correspondence: Zhangyong Xia
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Gatt A, Lee H, Williams G, Thuret S, Ballard C. Expression of neurogenic markers in Alzheimer's disease: a systematic review and metatranscriptional analysis. Neurobiol Aging 2019; 76:166-180. [PMID: 30716542 DOI: 10.1016/j.neurobiolaging.2018.12.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/20/2018] [Accepted: 12/27/2018] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia characterized by substantial neuronal loss and progressive brain atrophy. Animal studies have suggested that the process of adult neurogenesis might be altered at the earliest phases of disease onset. The relationship between AD progression and adult neurogenesis in the human brain is, however, not well understood. Here, we present a systematic review of the postmortem studies that investigated changes in human adult neurogenesis in the AD brain. We present findings from 11 postmortem studies that were identified by a systematic search within the literature, focusing on what markers of neurogenesis were used, which stages of AD were investigated, and whether the studies had any confounding information that could potentially hinder clear interpretation of the presented data. In addition, we also review studies that examined transcriptomic changes in human AD postmortem brains and reveal upregulated expression of neural progenitor and proliferation markers and downregulated expression of later neurogenic markers in AD. Taken together, the existing literature seems to suggest that the overall level of human adult neurogenesis is reduced during the later stages of AD, potentially due to failed maturation and integration of new-born neurons. Further investigations using complementary methods such as in vitro disease modeling will be helpful to understand the exact molecular mechanisms underlying such pattern of change and to determine whether neurogenesis can be an effective therapeutic target for early intervention.
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Affiliation(s)
- Ariana Gatt
- Wolfson Centre for Age-Related Diseases, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
| | - Hyunah Lee
- Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Gareth Williams
- Wolfson Centre for Age-Related Diseases, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Sandrine Thuret
- Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Clive Ballard
- Wolfson Centre for Age-Related Diseases, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK; Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
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3
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Kannangara TS, Carter A, Xue Y, Dhaliwal JS, Béïque JC, Lagace DC. Excitable Adult-Generated GABAergic Neurons Acquire Functional Innervation in the Cortex after Stroke. Stem Cell Reports 2018; 11:1327-1336. [PMID: 30416050 PMCID: PMC6294071 DOI: 10.1016/j.stemcr.2018.10.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/13/2018] [Accepted: 10/15/2018] [Indexed: 11/16/2022] Open
Abstract
Ischemic stroke enhances the proliferation of adult-generated precursor cells that ectopically migrate toward the infarct. Studies have correlated precursor cell proliferation and subsequent adult neurogenesis with enhanced stroke recovery, yet it remains unclear whether stroke can generate new neurons capable of functional integration into the injured cortex. Here, using single and bitransgenic reporter mice, we identify spatial and temporal features of a multilineage cellular response to focal ischemia. We reveal that a small population of stroke-induced immature neurons accumulate within the peri-infarct region of the adult sensorimotor cortex, exhibit voltage-dependent conductances, fire action potentials, express GABAergic markers, and receive sparse GABAergic synaptic inputs. Collectively, these findings reveal that GABAergic neurons arising from the lateral ventricle have the capacity to integrate into the stroke-injured cortex, although their limited number and exiguous synaptic integration may limit their ability to participate in stroke recovery.
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Affiliation(s)
- Timal S Kannangara
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; University of Ottawa Brain and Mind Research Institute, Ottawa, ON K1H 8M5, Canada; Neuroscience Program, University of Ottawa, Ottawa, ON K1H 8M5, Canada; Canadian Partnership for Stroke Recovery, Ottawa, ON K1G 5Z3, Canada
| | - Anthony Carter
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; Canadian Partnership for Stroke Recovery, Ottawa, ON K1G 5Z3, Canada
| | - Yingben Xue
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Jagroop S Dhaliwal
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; University of Ottawa Brain and Mind Research Institute, Ottawa, ON K1H 8M5, Canada; Neuroscience Program, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Jean-Claude Béïque
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; University of Ottawa Brain and Mind Research Institute, Ottawa, ON K1H 8M5, Canada; Neuroscience Program, University of Ottawa, Ottawa, ON K1H 8M5, Canada; Canadian Partnership for Stroke Recovery, Ottawa, ON K1G 5Z3, Canada.
| | - Diane C Lagace
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; University of Ottawa Brain and Mind Research Institute, Ottawa, ON K1H 8M5, Canada; Neuroscience Program, University of Ottawa, Ottawa, ON K1H 8M5, Canada; Canadian Partnership for Stroke Recovery, Ottawa, ON K1G 5Z3, Canada.
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Zhang N, Song C, Zhao B, Xing M, Luo L, Gordon ML, Cheng Y. Neovascularization and Synaptic Function Regulation with Memantine and Rosuvastatin in a Rat Model of Chronic Cerebral Hypoperfusion. J Mol Neurosci 2017; 63:223-232. [PMID: 28920182 DOI: 10.1007/s12031-017-0974-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 09/08/2017] [Indexed: 12/16/2022]
Abstract
Cerebral hypoperfusion is an important factor in the pathogenesis of cerebrovascular diseases and neurodegenerative disorders. We investigated the effects of memantine and rosuvastatin on both neovascularization and synaptic function in a rat model of chronic cerebral hypoperfusion, which was established by the bilateral common carotid occlusion (2VO) method. We tested learning and memory ability, synaptic function, circulating endothelial progenitor cell (EPC) number, expression of neurotrophic factors, and markers of neovasculogenesis and cell proliferation after memantine and/or rosuvastatin treatment. Rats treated with memantine and/or rosuvastatin showed significant improvement in Morris water maze task and long-term potentiation (LTP) in the hippocampus, compared with untreated 2VO model rats. Circulating EPCs, expression of brain-derived neurotrophic factor, and vascular endothelial growth factor, markers of microvessel density were increased by each of the three interventions. Rosuvastatin also increased cell proliferation in the hippocampus. Combined treatment with memantine and rosuvastatin showed greater effect on enhancement of LTP and expression of neurotrophic factors than either single medication treatment alone. Both memantine and rosuvastatin improved learning and memory, enhanced neovascularization and synaptic function, and upregulated neurotrophic factors in a rat model of chronic cerebral hypoperfusion.
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Affiliation(s)
- Nan Zhang
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin Neurological Institute, 154, Anshan Road, Tianjin, 300052, China.
- The Litwin-Zucker Research Center, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.
| | - Chenchen Song
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin Neurological Institute, 154, Anshan Road, Tianjin, 300052, China
- Department of Neurology, No.254 Hospital of the PLA, Tianjin, China
| | - Baomin Zhao
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin Neurological Institute, 154, Anshan Road, Tianjin, 300052, China
- Department of Neurology, Yidu Central Hospital of Weifang, Qingzhou, China
| | - Mengya Xing
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin Neurological Institute, 154, Anshan Road, Tianjin, 300052, China
| | - Lanlan Luo
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin Neurological Institute, 154, Anshan Road, Tianjin, 300052, China
| | - Marc L Gordon
- The Litwin-Zucker Research Center, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.
| | - Yan Cheng
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin Neurological Institute, 154, Anshan Road, Tianjin, 300052, China
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Ottoboni L, Merlini A, Martino G. Neural Stem Cell Plasticity: Advantages in Therapy for the Injured Central Nervous System. Front Cell Dev Biol 2017; 5:52. [PMID: 28553634 PMCID: PMC5427132 DOI: 10.3389/fcell.2017.00052] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/25/2017] [Indexed: 12/14/2022] Open
Abstract
The physiological and pathological properties of the neural germinal stem cell niche have been well-studied in the past 30 years, mainly in animals and within given limits in humans, and knowledge is available for the cyto-architectonic structure, the cellular components, the timing of development and the energetic maintenance of the niche, as well as for the therapeutic potential and the cross talk between neural and immune cells. In recent years we have gained detailed understanding of the potentiality of neural stem cells (NSCs), although we are only beginning to understand their molecular, metabolic, and epigenetic profile in physiopathology and, further, more can be invested to measure quantitatively the activity of those cells, to model in vitro their therapeutic responses or to predict interactions in silico. Information in this direction has been put forward for other organs but is still limited in the complex and very less accessible context of the brain. A comprehensive understanding of the behavior of endogenous NSCs will help to tune or model them toward a desired response in order to treat complex neurodegenerative diseases. NSCs have the ability to modulate multiple cellular functions and exploiting their plasticity might make them into potent and versatile cellular drugs.
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Affiliation(s)
- Linda Ottoboni
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| | - Arianna Merlini
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| | - Gianvito Martino
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
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6
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Carmichael ST. Emergent properties of neural repair: elemental biology to therapeutic concepts. Ann Neurol 2016; 79:895-906. [PMID: 27043816 PMCID: PMC4884133 DOI: 10.1002/ana.24653] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 03/28/2016] [Accepted: 03/29/2016] [Indexed: 12/20/2022]
Abstract
Stroke is the leading cause of adult disability. The past decade has seen advances in basic science research of neural repair in stroke. The brain forms new connections after stroke, which have a causal role in recovery of function. Brain progenitors, including neuronal and glial progenitors, respond to stroke and initiate a partial formation of new neurons and glial cells. The molecular systems that underlie axonal sprouting, neurogenesis, and gliogenesis after stroke have recently been identified. Importantly, tractable drug targets exist within these molecular systems that might stimulate tissue repair. These basic science advances have taken the field to its first scientific milestone; the elemental principles of neural repair in stroke have been identified. The next stages in this field involve understanding how these elemental principles of recovery interact in the dynamic cellular systems of the repairing brain. Emergent principles arise out of the interaction of the fundamental or elemental principles in a system. In neural repair, the elemental principles of brain reorganization after stroke interact to generate higher order and distinct concepts of regenerative brain niches in cellular repair, neuronal networks in synaptic plasticity, and the distinction of molecular systems of neuroregeneration. Many of these emergent principles directly guide the development of new therapies, such as the necessity for spatial and temporal control in neural repair therapy delivery and the overlap of cancer and neural repair mechanisms. This review discusses the emergent principles of neural repair in stroke as they relate to scientific and therapeutic concepts in this field. Ann Neurol 2016;79:895–906
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Affiliation(s)
- S Thomas Carmichael
- Department of Neurology, David Geffen School of Medicine at UCLA and UCLA Broad Stem Cell Center, University of California, Los Angeles, Los Angeles, CA
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7
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Ekonomou A, Savva GM, Brayne C, Forster G, Francis PT, Johnson M, Perry EK, Attems J, Somani A, Minger SL, Ballard CG. Stage-specific changes in neurogenic and glial markers in Alzheimer's disease. Biol Psychiatry 2015; 77:711-9. [PMID: 25022604 DOI: 10.1016/j.biopsych.2014.05.021] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Revised: 05/20/2014] [Accepted: 05/23/2014] [Indexed: 12/30/2022]
Abstract
BACKGROUND Reports of altered endogenous neurogenesis in people with Alzheimer's disease (AD) and transgenic AD models have suggested that endogenous neurogenesis may be an important treatment target, but there is considerable discrepancy among studies. We examined endogenous neurogenesis and glia changes across the range of pathologic severity of AD in people with and without dementia to address this key question. METHODS Endogenous neurogenesis and glia in the subventricular zone and dentate gyrus neurogenic niches were evaluated using single and double immunohistochemistry and a validated antibody selection for stage-specific and type-specific markers in autopsy tissue from a representative cohort of 28 participants in the Medical Research Council Cognitive Function and Ageing Study. Immunopositive cells were measured blinded to diagnosis using bright-field and fluorescent microscopy. RESULTS The number of newly generated neurons significantly declined only in the dentate gyrus of patients with severe tau pathology. No other changes in other neurogenic markers were observed in either of the neurogenic niches. Alterations in astrocytes and microglia were also observed in the dentate gyrus across the different stages of tau pathology. No change in any of the markers was observed in individuals who died with dementia compared with individuals who did not die with dementia. CONCLUSIONS Alterations in endogenous neurogenesis appeared to be confined to a reduction in the generation of new neurons in the dentate gyrus of patients with AD and severe neurofibrillary tangle pathology and were accompanied by changes in the glia load. These data suggest that intervention enhancing endogenous neurogenesis may be a potential therapeutic target in AD.
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Affiliation(s)
- Antigoni Ekonomou
- Wolfson Centre for Age-Related Diseases, King's College London, London, United Kingdom.
| | - George M Savva
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Carol Brayne
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Gillian Forster
- Sheffield Institute for Translational Neuroscience, Department of Neuroscience, University of Sheffield, Sheffield, United Kingdom
| | - Paul T Francis
- Wolfson Centre for Age-Related Diseases, King's College London, London, United Kingdom
| | - Mary Johnson
- Institute for Ageing and Health, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Elaine K Perry
- Institute for Ageing and Health, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Johannes Attems
- Institute for Ageing and Health, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Alyma Somani
- Wolfson Centre for Age-Related Diseases, King's College London, London, United Kingdom
| | - Stephen L Minger
- Wolfson Centre for Age-Related Diseases, King's College London, London, United Kingdom
| | - Clive G Ballard
- Wolfson Centre for Age-Related Diseases, King's College London, London, United Kingdom
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Kaiser D, Weise G, Möller K, Scheibe J, Pösel C, Baasch S, Gawlitza M, Lobsien D, Diederich K, Minnerup J, Kranz A, Boltze J, Wagner DC. Spontaneous white matter damage, cognitive decline and neuroinflammation in middle-aged hypertensive rats: an animal model of early-stage cerebral small vessel disease. Acta Neuropathol Commun 2014; 2:169. [PMID: 25519173 PMCID: PMC4279586 DOI: 10.1186/s40478-014-0169-8] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 11/25/2014] [Indexed: 12/11/2022] Open
Abstract
Introduction Cerebral small vessel disease (cSVD) is one of the most prevalent neurological disorders. The progressive remodeling of brain microvessels due to arterial hypertension or other vascular risk factors causes subtle, but constant cognitive decline through to manifest dementia and substantially increases the risk for stroke. Preliminary evidence suggests the contribution of the immune system to disease initiation and progression, but a more detailed understanding is impaired by the unavailability of appropriate animal models. Here, we introduce the spontaneously hypertensive rat (SHR) as a model for early onset cSVD and unveiled substantial immune changes in conjunction with brain abnormalities that resemble clinical findings. Results In contrast to age-matched normotensive Wistar Kyoto (WKY) rats, male SHR exhibited non-spatial memory deficits. Magnetic resonance imaging showed brain atrophy and a reduction of white matter volumes in SHR. Histological analyses confirmed white matter demyelination and unveiled a circumscribed blood brain barrier dysfunction in conjunction with micro- and macrogliosis in deep cortical regions. Flow cytometry and histological analyses further revealed substantial disparities in cerebral CD45high leukocyte counts and distribution patterns between SHR and WKY. SHR showed lower counts of T cells in the choroid plexus and meningeal spaces as well as decreased interleukin-10 levels in the cerebrospinal fluid. On the other hand, both T and NK cells were significantly augmented in the SHR brain microvasculature. Conclusions Our results indicate that SHR share behavioral and neuropathological characteristics with human cSVD patients and further undergird the relevance of immune responses for the initiation and progression of cSVD. Electronic supplementary material The online version of this article (doi:10.1186/s40478-014-0169-8) contains supplementary material, which is available to authorized users.
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Alvarez-Sabín J, Román GC. The role of citicoline in neuroprotection and neurorepair in ischemic stroke. Brain Sci 2013; 3:1395-414. [PMID: 24961534 PMCID: PMC4061873 DOI: 10.3390/brainsci3031395] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 08/10/2013] [Accepted: 08/14/2013] [Indexed: 12/12/2022] Open
Abstract
Advances in acute stroke therapy resulting from thrombolytic treatment, endovascular procedures, and stroke units have improved significantly stroke survival and prognosis; however, for the large majority of patients lacking access to advanced therapies stroke mortality and residual morbidity remain high and many patients become incapacitated by motor and cognitive deficits, with loss of independence in activities of daily living. Therefore, over the past several years, research has been directed to limit the brain lesions produced by acute ischemia (neuroprotection) and to increase the recovery, plasticity and neuroregenerative processes that complement rehabilitation and enhance the possibility of recovery and return to normal functions (neurorepair). Citicoline has therapeutic effects at several stages of the ischemic cascade in acute ischemic stroke and has demonstrated efficiency in a multiplicity of animal models of acute stroke. Long-term treatment with citicoline is safe and effective, improving post-stroke cognitive decline and enhancing patients' functional recovery. Prolonged citicoline administration at optimal doses has been demonstrated to be remarkably well tolerated and to enhance endogenous mechanisms of neurogenesis and neurorepair contributing to physical therapy and rehabilitation.
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Affiliation(s)
- José Alvarez-Sabín
- Neurovascular Unit, Department of Neurology, Universitat Autónoma de Barcelona, 119-129 Passeig de la Vall d'Hebron, Barcelona 08035, Spain.
| | - Gustavo C Román
- Department of Neurology, Nantz National Alzheimer Center, Methodist Neurological Institute, Houston, TX 77030, USA.
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Maksimovich IV. Transcatheter treatment of atherosclerotic lesions of the brain complicated by vascular dementia development. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/wjns.2012.24031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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