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Cerebral microbleed

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https://www.readbyqxmd.com/read/29156222/cerebral-small-vessel-disease-in-middle-age-and-genetic-predisposition-to-late-onset-alzheimer-s-disease
#1
James D Stefaniak, Li Su, Elijah Mak, Nasim Sheikh Bahaei, Katie Wells, Karen Ritchie, Adam Waldman, Craig W Ritchie, John T O'Brien
INTRODUCTION: Cerebral small vessel disease (CSVD) is associated with late-onset Alzheimer's disease (LOAD) and might contribute to the relationship between apolipoprotein E ε4 (APOEε4) and LOAD, in older people. However, it is unclear whether CSVD begins in middle age in individuals genetically predisposed to LOAD. METHODS: We assessed the relationship between radiological markers of CSVD, white matter hyperintensities and microbleeds, and genetic predisposition to LOAD in a cross-sectional analysis of cognitively normal subjects aged 40-59 years recruited from the PREVENT Dementia study...
November 18, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29125055/cerebral-amyloid-angiopathy-cerebral-microbleeds-and-implications-for-anticoagulation-decisions-the-need-for-a-balanced-approach
#2
Andreas Charidimou, Ashkan Shoamanesh, Rustam Al-Shahi Salman, Charlotte Cordonnier, Luke A Perry, Kevin N Sheth, Alessandro Biffi, Jonathan Rosand, Anand Viswanathan
Cerebral amyloid angiopathy is a common hemorrhagic small vessel disease of the brain, often associated with high risk of spontaneous lobar intracerebral hemorrhage. When the suspicion of cerebral amyloid angiopathy is raised, clinicians are hesitant in prescribing oral anticoagulation in patients in whom it is otherwise indicated, including the case of non-valvular atrial fibrillation. This is one of the thorniest clinical dilemmas in the field currently. In this short Leading Opinion piece by an international panel of clinicians-researchers active in the field, we present our consistent approach and future outlook on oral anticoagulation post intracerebral hemorrhage and in the setting of clinical-radiologic evidence of cerebral amyloid angiopathy...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/29117953/brain-microbleeds-anticoagulation-and-hemorrhage-risk-meta-analysis-in-stroke-patients-with-af
#3
Andreas Charidimou, Christopher Karayiannis, Tae-Jin Song, Dilek Necioglu Orken, Vincent Thijs, Robin Lemmens, Jinkwon Kim, Su Mei Goh, Thanh G Phan, Cathy Soufan, Ronil V Chandra, Lee-Anne Slater, Shamir Haji, Vincent Mok, Solveig Horstmann, Kam Tat Leung, Yuichiro Kawamura, Nobuyuki Sato, Naoyuki Hasebe, Tsukasa Saito, Lawrence K S Wong, Yannie Soo, Roland Veltkamp, Kelly D Flemming, Toshio Imaizumi, Velandai Srikanth, Ji Hoe Heo
OBJECTIVES: To assess the association between cerebral microbleeds (CMBs) and future spontaneous intracerebral hemorrhage (ICH) risk in ischemic stroke patients with nonvalvular atrial fibrillation (AF) taking oral anticoagulants. METHODS: This was a meta-analysis of cohort studies with >50 patients with recent ischemic stroke and documented AF, brain MRI at baseline, long-term oral anticoagulation treatment, and ≥6 months of follow-up. Authors provided summary-level data on stroke outcomes stratified by CMB status...
November 8, 2017: Neurology
https://www.readbyqxmd.com/read/29110998/total-small-vessel-disease-burden-and-brain-network-efficiency-in-cerebral-amyloid-angiopathy
#4
Raffaella Valenti, Yael D Reijmer, Andreas Charidimou, Gregoire Boulouis, Sergi Ramirez Martinez, Li Xiong, Panagiotis Fotiadis, Michael Jessel, Alison Ayres, Grace Riley, Leonardo Pantoni, M Edip Gurol, Steven M Greenberg, Anand Viswanathan
BACKGROUND: Cerebral amyloid angiopathy (CAA) is associated with hemorrhagic and nonhemorrhagic markers small vessel disease (SVD). A composite score to quantify the total burden of SVD on MRI specifically for CAA patients was recently developed. Brain network alterations related to individual MRI markers of SVD in CAA were demonstrated. OBJECTIVES: Considering diffusion based network measures sensitive to detect different relevant SVD-related brain injury, we investigated if increased overall SVD injury on MRI corresponds to worse global brain connectivity in CAA...
November 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29101611/pre-existing-small-vessel-disease-in-patients-with-acute-stroke-from-the-middle-east-southeast-asia-and-philippines
#5
Naveed Akhtar, Abdul Salam, Saadat Kamran, Atlantic D'Souza, Yahia Imam, Ahmed Own, Ahmed ElSotouhy, Surjith Vattoth, Paula Bourke, Zain Bhutta, Sujatha Joseph, Mark Santos, Rabia Ali Khan, Ashfaq Shuaib
Asymptomatic small vessel disease (SVD), including white matter hyperintensities (WMHIs), periventricular hyperintensities (PVHIs), silent stroke (SS), and cerebral microbleeds (CMBs), increases the risk of stroke. There are limited studies of SVD in subjects from the Middle East and Southeast Asia (SA). All patients admitted to stroke service between 2014 and 2015 were reviewed for presence of "pre-existing" SVD. Stroke mimics with no previous history of stroke were used as controls. There were 1727 patients admitted with stroke...
November 3, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/29101255/midlife-systemic-inflammation-late-life-white-matter-integrity-and-cerebral-small-vessel-disease-the-atherosclerosis-risk-in-communities-study
#6
Keenan A Walker, Melinda C Power, Ron C Hoogeveen, Aaron R Folsom, Christie M Ballantyne, David S Knopman, B Gwen Windham, Elizabeth Selvin, Clifford R Jack, Rebecca F Gottesman
BACKGROUND AND PURPOSE: It is currently unclear whether midlife systemic inflammation promotes the development of white matter (WM) abnormalities and small vessel disease in the elderly. We examined the association of midlife systemic inflammation with late-life WM hyperintensity volume, deep and periventricular WM microstructural integrity (fractional anisotropy and mean diffusivity [MD]), cerebral infarcts, and microbleeds in a biracial prospective cohort study. METHODS: Linear and logistic regression examined the relation between midlife high-sensitivity C-reactive protein (CRP)-a nonspecific marker of inflammation-and brain magnetic resonance imaging markers assessed 21 years later in the Atherosclerosis Risk in Communities Study...
November 3, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29100059/enlarged-perivascular-spaces-in-the-basal-ganglia-are-independently-associated-with-intracranial-atherosclerosis-in-the-elderly
#7
Oscar H Del Brutto, Robertino M Mera
BACKGROUND AND AIMS: Enlarged basal ganglia perivascular spaces (BG-PVS) are a marker of cerebral small vessel disease (SVD). The association between enlarged BG-PVS and atherosclerosis has been explored, but knowledge is limited to extracranial vessels. We aimed to assess whether enlarged BG-PVS correlate with carotid siphon calcifications (CSC), used as a surrogate of intracranial atherosclerosis. METHODS: Atahualpa residents aged ≥60 years underwent head computed tomography (CT) for assessment of CSC, and brain magnetic resonance imaging (MRI) for evaluation of BG-PVS and other imaging markers of SVD...
October 20, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29070715/prevalence-and-natural-history-of-superficial-siderosis-a-population-based-study
#8
Michael Pichler, Prashanthi Vemuri, Alejandro A Rabinstein, Jeremiah Aakre, Kelly D Flemming, Robert D Brown, Neeraj Kumar, Kejal Kantarci, Walter Kremers, Michelle M Mielke, David S Knopman, Clifford R Jack, Ronald C Petersen, Val Lowe, Jonathan Graff-Radford
BACKGROUND AND PURPOSE: Superficial siderosis (SS) is characterized by hemosiderin deposition in the superficial layers of the central nervous system and can be seen during postmortem examination or with iron-sensitive magnetic resonance imaging techniques. The distribution of SS may predict the probable underlying cause. This study aimed to report the prevalence and natural history of SS in a population-based study. METHODS: Brain magnetic resonance imaging scans from the MCSA (Mayo Clinic Study of Aging), a population-based study of residents 50 to 89 years of age in Olmsted County, Minnesota, were reviewed...
October 25, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29070669/cortical-superficial-siderosis-multifocality-in-cerebral-amyloid-angiopathy-a-prospective-study
#9
Andreas Charidimou, Gregoire Boulouis, Duangnapa Roongpiboonsopit, Eitan Auriel, Marco Pasi, Kellen Haley, Ellis S van Etten, Sergi Martinez-Ramirez, Alison Ayres, Anastasia Vashkevich, Kristin M Schwab, Joshua N Goldstein, Jonathan Rosand, Anand Viswanathan, Steven M Greenberg, M Edip Gurol
OBJECTIVE: In order to explore the mechanisms of cortical superficial siderosis (cSS) multifocality and its clinical implications for recurrent intracerebral hemorrhage (ICH) risk in patients with cerebral amyloid angiopathy (CAA), we used a new rating method that we developed specifically to evaluate cSS extent at spatially separated foci. METHODS: Consecutive patients with CAA-related ICH according to Boston criteria from a single-center prospective cohort were analyzed...
October 25, 2017: Neurology
https://www.readbyqxmd.com/read/29070668/evolution-of-dwi-lesions-in-cerebral-amyloid-angiopathy-evidence-for-ischemia
#10
Susanne J van Veluw, Arne Lauer, Andreas Charidimou, Narimene Bounemia, Li Xiong, Gregoire Boulouis, Panagiotis Fotiadis, Alison Ayres, M Edip Gurol, Anand Viswanathan, Steven M Greenberg, Meike W Vernooij
OBJECTIVE: To address the pathophysiologic nature of small diffusion-weighted imaging (DWI) lesions in patients with cerebral amyloid angiopathy (CAA) who underwent serial MRI. Specifically, we tested (1) whether DWI lesions occurred preferentially in individuals with prior DWI lesions, (2) the cross-sectional association with chronic cortical cerebral microinfarcts (CMIs), and (3) the evolution of DWI lesions over time. METHODS: Patients with probable CAA (n = 79) who underwent at least 2 MRI sessions were included...
October 25, 2017: Neurology
https://www.readbyqxmd.com/read/29063241/prevalence-and-clinical-characteristics-of-cortical-superficial-siderosis-in-patients-with-acute-stroke
#11
Satoshi Suda, Takashi Shimoyama, Shizuka Suzuki, Takahiro Ouchi, Masafumi Arakawa, Junya Aoki, Kentaro Suzuki, Yuki Sakamoto, Seiji Okubo, Yasuhiro Nishiyama, Chikako Nito, Masahiro Mishina, Kazumi Kimura
Cortical superficial siderosis (cSS) is a pathologic and radiologic diagnosis of hemosiderin deposition in subpial brain layers. However, cSS has not been fully studied in patients with acute stroke. Here, we investigated the prevalence of cSS in patients with acute stroke and analyzed the relationship between cSS and different clinical and neuroimaging characteristics. From September 2014 through June 2016, consecutive patients with acute stroke who were admitted to our department were retrospectively investigated...
October 23, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29052571/susceptibility-weighted-imaging-in-thrombolytic-therapy-of-acute-ischemic-stroke
#12
REVIEW
Lin Li, Ming-Su Liu, Guang-Qin Li, Yang Zheng, Tong-Li Guo, Xin Kang, Mao-Ting Yuan
OBJECTIVE: To provide a comprehensive and latest overview of susceptibility-weighted imaging (SWI) in the application of thrombolysis in acute ischemic stroke, and to update the decision-making effect and clinical value of SWI on identifying stroke patients suitable for thrombolytic therapy and possible benefits and risks followed. DATA SOURCES: Literatures referred to this review were collected from PubMed, Medline, and EMBASE published till May 2017, using the search terms including susceptibility-weighted imaging, gradient-echo, T2*, thrombolysis, recombinant tissue plasminogen activator (rt-PA), thrombolytic therapy, and stroke...
October 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29033410/total-small-vessel-disease-score-in-neurologically-healthy-japanese-adults-in-the-kashima-scan-study
#13
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/29021757/cerebral-small-vessel-disease-burden-is-associated-with-motor-performance-of-lower-and-upper-extremities-in-community-dwelling-populations
#14
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
#15
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/28991905/the-presence-and-severity-of-cerebral-small-vessel-disease-increases-the-frequency-of-stroke-in-a-cohort-of-patients-with-large-artery-occlusive-disease
#16
Ki-Woong Nam, Hyung-Min Kwon, Jae-Sung Lim, Moon-Ku Han, Hyunwoo Nam, Yong-Seok Lee
BACKGROUND: Cerebral small vessel disease (SVD) commonly coexists with large artery atherosclerosis (LAA). AIM: We evaluate the effect of SVD on stroke recurrence in patients for ischemic stroke with LAA. METHODS: We consecutively collected first-ever ischemic stroke patients who were classified as LAA mechanism between Jan 2010 and Dec 2013. Univariate and multivariate Cox analyses were performed to evaluate the association between the 2-year recurrence and demographic, clinical, and radiological factors...
2017: PloS One
https://www.readbyqxmd.com/read/28987481/mri-for-in-vivo-diagnosis-of-cerebral-amyloid-angiopathy-tailoring-artifacts-to-image-hemorrhagic-biomarkers
#17
REVIEW
G Boulouis, M Edjlali-Goujon, S Moulin, W Ben Hassen, O Naggara, C Oppenheim, C Cordonnier
Cerebral amyloid angiopathy (CAA) is a frequent age-related small vessel disease (SVD) with cardinal magnetic resonance imaging (MRI) signatures that are hemorrhagic in nature, and include the presence of strictly lobar (superficial) cerebral microbleeds and intracerebral hemorrhages as well as cortical superficial siderosis. When investigating a patient with suspected CAA in the context of intracranial hemorrhage (parenchymal or subarachnoid) or cognitive dysfunction, various MRI parameters influence the optimal detection and characterization (and prognostication) of this frequent SVD...
November 2017: Revue Neurologique
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/28980608/-neuroimaging-and-molecular-biomarkers-of-dementia
#19
T A Polyakova, A V Arablinsky
Development of laboratory diagnosis and neuroimaging revealed a number of biomarkers for in vivo diagnosis of the most common forms of dementia (Alzheimer's disease, Lewy body dementia and vascular dementia). Currently, the highest diagnostic sensitivity and specificity of molecular biomarkers in the cerebrospinal fluid are detected for Alzheimer's disease. At the same time, the changes according to the magnetic resonance imaging are more prognostically significant for future cognitive decline than cerebrospinal fluid biomarkers...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28978655/change-in-multimodal-mri-markers-predicts-dementia-risk-in-cerebral-small-vessel-disease
#20
Eva A Zeestraten, Andrew J Lawrence, Christian Lambert, Philip Benjamin, Rebecca L Brookes, Andrew D Mackinnon, Robin G Morris, Thomas R Barrick, Hugh S Markus
OBJECTIVE: To determine whether MRI markers, including diffusion tensor imaging (DTI), can predict cognitive decline and dementia in patients with cerebral small vessel disease (SVD). METHODS: In the prospective St George's Cognition and Neuroimaging in Stroke study, multimodal MRI was performed annually for 3 years and cognitive assessments annually for 5 years in a cohort of 99 patients with SVD, defined as symptomatic lacunar stroke and confluent white matter hyperintensities (WMH)...
October 31, 2017: Neurology
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