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Cerebral small vascular disease

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https://www.readbyqxmd.com/read/29166803/oxidative-stress-in-cerebral-small-vessel-disease-role-of-reactive-species
#1
Cezary Grochowski, Jakub Litak, Piotr Kamieniak, Ryszard Maciejewski
Cerebral small vessel disease (CSVD) is a wide term describing the condition affecting perforating arterial branches as well as arterioles, venules and capillaries. Cerebral vascular net is one of the main targets of localized oxidative stress processes causing damage to vasculature, changes in the blood flow and blood-brain barrier and, in consequence, promoting neurodegenerative alterations in the brain tissue. Numerous studies report the fact of oxidation to proteins, sugars, lipids and nucleic acids, occurring in most neurodegenerative diseases mainly in the earliest stages and correlations with the development of cognitive and motor disturbances...
November 22, 2017: Free Radical Research
https://www.readbyqxmd.com/read/29114096/fingolimod-protects-against-ischemic-white-matter-damage-by-modulating-microglia-toward-m2-polarization-via-stat3-pathway
#2
Chuan Qin, Wen-Hui Fan, Qian Liu, Ke Shang, Madhuvika Murugan, Long-Jun Wu, Wei Wang, Dai-Shi Tian
BACKGROUND AND PURPOSE: White matter (WM) ischemic injury, a major neuropathological feature of cerebral small vessel diseases, is an important cause of vascular cognitive impairment in later life. The pathogenesis of demyelination after WM ischemic damage are often accompanied by microglial activation. Fingolimod (FTY720) was approved for the treatment of multiple sclerosis for its immunosuppression property. In this study, we evaluated the neuroprotective potential of FTY720 in a WM ischemia model...
November 7, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29114091/circulating-endothelial-markers-in-retinal-vasculopathy-with-cerebral-leukoencephalopathy-and-systemic-manifestations
#3
Nadine Pelzer, Roel Bijkerk, Marlies E J Reinders, Anton Jan van Zonneveld, Michel D Ferrari, Arn M J M van den Maagdenberg, Jeroen Eikenboom, Gisela M Terwindt
BACKGROUND AND PURPOSE-: Retinal vasculopathy with cerebral leukoencephalopathy and systemic manifestations (RVCL-S) is a monogenic small vessel disease, caused by C-terminal truncating TREX1 mutations, that can be considered a model for stroke and vascular dementia. The pathophysiology of RVCL-S is largely unknown, but systemic endothelial involvement has been suggested, leading to pathology in the brain and other highly vascularized organs. Here, we investigated circulating endothelial markers to confirm endothelial involvement and identify biomarkers for disease activity...
November 7, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29097299/the-study-of-neurocognitive-outcomes-radiological-and-retinal-effects-of-aspirin-in-sleep-apnoea-rationale-and-methodology-of-the-snore-asa-study
#4
Stephanie Alison Ward, Elsdon Storey, Robyn L Woods, Garun S Hamilton, Ryo Kawasaki, Andrew L Janke, Matthew T Naughton, Fergal J O'Donoghue, Rory Wolfe, Tien Y Wong, Christopher M Reid, Walter P Abhayaratna, Nigel Stocks, Ruth Trevaks, Sharyn Fitzgerald, Lauren A B Hodgson, Liubov Robman, Barbara Workman, John J McNeil
PURPOSE: Sleep disordered breathing (SDB) is highly prevalent in older adults. Increasing evidence links SDB to the risk of dementia, mediated via a number of pathways, some of which may be attenuated by low-dose aspirin. This study will evaluate, in a healthy older cohort, the prospective relationship between SDB and cognitive function, changes in retinal and cerebral microvasculature, and determine whether low-dose aspirin ameliorates the effects of SDB on these outcomes over 3years...
October 30, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/29084064/new-insights-into-cerebral-small-vessel-disease-and-vascular-cognitive-impairment-from-mri
#5
Eric E Smith, Andrew E Beaudin
PURPOSE OF REVIEW: We review recent MRI research that addresses two important challenges in cerebral small vessel disease (SVD) research: early diagnosis, and linking SVD with cognitive impairment. First, we review studies of MRI measurements of blood flow and blood-brain barrier integrity. Second, we review MRI studies identifying neuroimaging correlates of SVD-related cognitive dysfunction, focusing on brain connectivity and white matter microarchitecture. This research is placed in context through discussion of recent recommendations for management of incidentally discovered SVD, and neuroimaging biomarker use in clinical trials...
October 27, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29042572/diagonal-earlobe-crease-is-a-visible-sign-for-cerebral-small-vessel-disease-and-amyloid-%C3%AE
#6
Jin San Lee, Seongbeom Park, Hee Jin Kim, Yeshin Kim, Hyemin Jang, Ko Woon Kim, Hak Young Rhee, Sung Sang Yoon, Kyoung Jin Hwang, Key-Chung Park, Seung Hwan Moon, Sung Tae Kim, Samuel N Lockhart, Duk L Na, Sang Won Seo
We investigated the frequency and clinical significance of diagonal earlobe crease (DELC) in cognitively impaired patients using imaging biomarkers, such as white matter hyperintensities (WMH) on MRI and amyloid-β (Aβ) PET. A total of 471 cognitively impaired patients and 243 cognitively normal (CN) individuals were included in this study. Compared with CN individuals, cognitively impaired patients had a greater frequency of DELC (OR 1.6, 95% CI 1.1-2.2, P = 0.007). This relationship was more prominent in patients with dementia (OR 1...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29040166/measurement-of-retinal-vessels-as-a-biomarker-of-cerebrovascular-ageing-in-older-hiv-positive-men-compared-to-controls
#7
Lewis Haddow, Rosanna Laverick, Irene Leung, Frank Post, Jaime Vera, Richard Gilson, Ian Williams, Marta Boffito, Caroline Sabin, Alan Winston, Tunde Peto
BACKGROUND: To compare retinal vascular measurements, biomarkers of cerebral small vessel disease (SVD), in HIV positive men aged 50 years and above with similarly-aged HIV negative men and younger HIV positive men. METHODS: We recruited white, non-diabetic men to a cross-sectional substudy of a larger cohort including three demographically-matched groups. Optic disc centred 45° colour fundus photographs were used to calculate central retinal arterial and venous calibre and the arterial-venous ratio (AVR)...
October 14, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29036822/cortical-cerebral-microinfarcts-on-3-tesla-mri-in-patients-with-vascular-cognitive-impairment
#8
Doeschka A Ferro, Susanne J van Veluw, Huiberdina L Koek, Lieza G Exalto, Geert Jan Biessels
BACKGROUND: Cerebral microinfarcts (CMIs) are small ischemic lesions that are a common neuropathological finding in patients with stroke or dementia. CMIs in the cortex can now be detected in vivo on 3 Tesla MRI. OBJECTIVE: To determine the occurrence of CMIs and associated clinical features in patients with possible vascular cognitive impairment (VCI). METHOD: 182 memory-clinic patients (mean age 71.4±10.6, 55% male) with vascular injury on brain MRI (i...
October 12, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29033410/total-small-vessel-disease-score-in-neurologically-healthy-japanese-adults-in-the-kashima-scan-study
#9
Yusuke Yakushiji, Andreas Charidimou, Tomoyuki Noguchi, Masashi Nishihara, Makoto Eriguchi, Yusuke Nanri, Atsushi Kawaguchi, Tatsumi Hirotsu, David J Werring, Hideo Hara
Objective We explored the association between the total small vessel disease (SVD) score obtained with magnetic resonance imaging and risk factors and outcomes in the Japanese population. Methods The presence of SVD features, including lacunes, cerebral microbleeds, white matter changes, and basal ganglia perivascular spaces on MRI, was summed to obtain a "total SVD score" (range 0-4). Ordinal and multinomial logistic regression analyses were performed to investigate the association of higher total SVD scores with vascular risk factors, the Mini Mental State Examination (MMSE) score, and cerebral atrophy...
October 16, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29027841/diffusion-tensor-tractography-in-cerebral-small-vessel-disease-correlation-with-cognitive-function
#10
Maria M D'Souza, S P Gorthi, Kunal Vadwala, Richa Trivedi, C Vijayakumar, Prabhjot Kaur, Subash Khushu
Background Patients with cerebral small vessel disease may suffer from varying levels of cognitive deficit and may progress on to vascular dementia. The extent of involvement, as seen on conventional magnetic resonance (MR) measures, correlates poorly with the level of cognitive decline. The purpose of this study was to investigate the utility of diffusion tensor imaging (DTI) as a marker for white matter damage in small vessel disease and to assess its correlation with cognitive function. Methods Thirty consecutive patients with cerebral small vessel disease underwent conventional MR imaging, DTI, and neuropsychological assessment...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/29026001/understanding-a-role-for-hypoxia-in-lesion-formation-and-location-in-the-deep-and-periventricular-white-matter-in-small-vessel-disease-and-multiple-sclerosis
#11
REVIEW
Santiago Martinez Sosa, Kenneth J Smith
The deep and periventricular white matter is preferentially affected in several neurological disorders, including cerebral small vessel disease (SVD) and multiple sclerosis (MS), suggesting that common pathogenic mechanisms may be involved in this injury. Here we consider the potential pathogenic role of tissue hypoxia in lesion development, arising partly from the vascular anatomy of the affected white matter. Specifically, these regions are supplied by a sparse vasculature fed by long, narrow end arteries/arterioles that are vulnerable to oxygen desaturation if perfusion is reduced (as in SVD, MS and diabetes) or if the surrounding tissue is hypoxic (as in MS, at least)...
October 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29021757/cerebral-small-vessel-disease-burden-is-associated-with-motor-performance-of-lower-and-upper-extremities-in-community-dwelling-populations
#12
Ning Su, Fei-Fei Zhai, Li-Xin Zhou, Jun Ni, Ming Yao, Ming-Li Li, Zheng-Yu Jin, Gao-Lang Gong, Shu-Yang Zhang, Li-Ying Cui, Feng Tian, Yi-Cheng Zhu
Objective: To investigate the correlation between cerebral small vessel disease (CSVD) burden and motor performance of lower and upper extremities in community-dwelling populations. Methods: We performed a cross-sectional analysis on 770 participants enrolled in the Shunyi study, which is a population-based cohort study. CSVD burden, including white matter hyperintensities (WMH), lacunes, cerebral microbleeds (CMBs), perivascular spaces (PVS), and brain atrophy were measured using 3T magnetic resonance imaging...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29018129/neuroimaging-correlates-of-cerebral-microbleeds-the-aric-study-atherosclerosis-risk-in-communities
#13
MULTICENTER STUDY
Jonathan Graff-Radford, Jeannette Simino, Kejal Kantarci, Thomas H Mosley, Michael E Griswold, B Gwen Windham, A Richey Sharrett, Marilyn S Albert, Rebecca F Gottesman, Clifford R Jack, Prashanthi Vemuri, David S Knopman
BACKGROUND AND PURPOSE: Cerebral microbleed (CMB) location (deep versus strictly lobar) may elucidate underlying pathology with deep CMBs being more associated with hypertensive vascular disease and lobar CMBs being more associated with cerebral amyloid angiopathy. The objective of this study was to determine whether neuroimaging signs of vascular disease and Alzheimer pathology are associated with different types of CMBs. METHODS: Among 1677 nondemented ARIC (Atherosclerosis Risk in Communities) participants (mean age=76±5 years; 40% men; 26% black) with 3-Tesla MRI scans at the fifth examination (2011-2013), we fit multinomial logistic regression models to quantify relationships of brain volumes (Alzheimer disease signature regions, total gray matter, frontal gray matter, and white matter hyperintensity volumes), infarct frequencies (lacunar, nonlacunar, and total), and apolipoprotein E (number of ε4 alleles) with CMB location (none, deep/mixed, or strictly lobar CMBs)...
November 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28991717/new-diagnostic-criteria-for-cerebral-autosomal-dominant-arteriopathy-with-subcortical-infarcts-and-leukocencephalopathy-in-japan
#14
Ikuko Mizuta, Akiko Watanabe-Hosomi, Takashi Koizumi, Mao Mukai, Ai Hamano, Yasuhiro Tomii, Masaki Kondo, Masanori Nakagawa, Hidekazu Tomimoto, Teruyuki Hirano, Makoto Uchino, Osamu Onodera, Toshiki Mizuno
PURPOSE: Definite diagnosis of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukocencephalopathy (CADASIL) is mostly done by identification of NOTCH3 mutations. We aimed to develop criteria for selecting patients suspected for CADASIL to undergo genetic testing. SUBJECTS AND METHODS: All subjects were Japanese. We recruited CADASIL patients genetically diagnosed up until 2011 (n=37, Group 1) or after 2011 (n=65, Group 2), 67 young stroke patients (≤55 years old), and 53 NOTCH3-negative CADASIL-like patients...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28989801/blood-pressure-gradients-in-cerebral-arteries-a-clue-to-pathogenesis-of-cerebral-small-vessel-disease
#15
Pablo J Blanco, Lucas O Müller, J David Spence
RATIONALE: The role of hypertension in cerebral small vessel disease is poorly understood. At the base of the brain (the 'vascular centrencephalon'), short straight arteries transmit blood pressure directly to small resistance vessels; the cerebral convexity is supplied by long arteries with many branches, resulting in a drop in blood pressure. Hypertensive small vessel disease (lipohyalinosis) causes the classically described lacunar infarctions at the base of the brain; however, periventricular white matter intensities (WMIs) seen on MRI and WMI in subcortical areas over the convexity, which are often also called 'lacunes', probably have different aetiologies...
September 2017: Stroke and Vascular Neurology
https://www.readbyqxmd.com/read/28988390/topographic-distribution-of-brain-iron-deposition-and-small-cerebrovascular-lesions-in-amyotrophic-lateral-sclerosis-and-in-frontotemporal-lobar-degeneration-a-post-mortem-7-0-tesla-magnetic-resonance-imaging-study-with-neuropathological-correlates
#16
Jacques De Reuck, David Devos, Caroline Moreau, Florent Auger, Nicolas Durieux, Vincent Deramecourt, Florence Pasquier, Claude-Alain Maurage, Charlotte Cordonnier, Didier Leys, Regis Bordet
Amyotrophic lateral sclerosis (ALS) is associated with frontotemporal lobar degeneration (FTLD) in 15% of the cases. A neuropathological continuity between ALS and FTLD-TDP is suspected. The present post-mortem 7.0-tesla magnetic resonance imaging (MRI) study compares the topographic distribution of iron (Fe) deposition and the incidence of small cerebrovascular lesions in ALS and in FTLD brains. Seventy-eight post-mortem brains underwent 7.0-tesla MRI. The patients consisted of 12 with ALS, 38 with FTLD, and 28 controls...
October 7, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28987197/neuropathology-of-cerebrovascular-diseases
#17
Isidro Ferrer, Noemi Vidal
The chapter describes the epidemiology of cerebrovascular diseases, anatomy of the cerebral blood vessels, pathophysiology of ischemia, hypoxia, hypoxemia, anemic hypoxia, histotoxic hypoxia, carbon monoxide damage, hyperoxid brain damage and decompression sickness, and selective cell and regional vulnerability; diseases of the blood vessels including atherosclerosis, hypertensive angiopathy, small vessel disease, inflammatory vascular diseases, cerebral amyloid angiopathies, CADASIL, CARASIL and other diseases that can lead to cerebrovascular occlusion; intracranial and intraspinal aneurysms and vascular malformations; hematologic disorders that can cause cerebral infarct or hemorrhage; brain ischemic damage; and spontaneous intracranial bleeding...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28984600/plasma-amyloid-%C3%AE-levels-cerebral-small-vessel-disease-and-cognition-the-rotterdam-study
#18
Saima Hilal, Saloua Akoudad, Cornelia M van Duijn, Wiro J Niessen, Marcel M Verbeek, Hugo Vanderstichele, Erik Stoops, M Arfan Ikram, Meike W Vernooij
BACKGROUND: Plasma amyloid-β (Aβ) levels are increasingly studied as a potential, accessible marker of cognitive impairment and dementia. The most common plasma Aβ isoforms, i.e., Aβ1-40 and Aβ1-42 have been linked with risk of Alzheimer's disease. However, it remains under-explored whether plasma Aβ levels including novel Aβ1-38 relate to vascular brain disease and cognition in a preclinical-phase of dementiaObjective:To examine the association of plasma Aβ levels (i.e., Aβ1-38, Aβ1-40, and Aβ1-42) with markers of cerebral small vessel disease (SVD) and cognition in a large population-based setting...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28982784/clinical-and-imaging-characteristics-of-arteriopathy-subtypes-in-children-with-arterial-ischemic-stroke-results-of-the-vips-study
#19
M Wintermark, N K Hills, G A DeVeber, A J Barkovich, T J Bernard, N R Friedman, M T Mackay, A Kirton, G Zhu, C Leiva-Salinas, Q Hou, H J Fullerton
BACKGROUND AND PURPOSE: Childhood arteriopathies are rare but heterogenous, and difficult to diagnose and classify, especially by nonexperts. We quantified clinical and imaging characteristics associated with childhood arteriopathy subtypes to facilitate their diagnosis and classification in research and clinical settings. MATERIALS AND METHODS: The Vascular Effects of Infection in Pediatric Stroke (VIPS) study prospectively enrolled 355 children with arterial ischemic stroke (2010-2014)...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28980617/-endothelial-dysfunction-in-chronic-vascular-encephalopathy
#20
N I Verjugina, A Sh Chimagomedova, I M Starovoitova, O S Levin
In this review, the authors consider endothelial dysfunction as a key pathophysiologic event of chronic vascular encephalopathy. Possible mechanisms of endothelial dysfunction in chronic vascular encephalopathy, especially associated with cerebral small vessel disease, neuroanatomy and pathophysiology of cerebral vascular endothelium are considered. Laboratory and instrumental methods for the diagnosis of endothelial dysfunction and potential approaches to its correction are described.
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
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