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Small brain infarct

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https://www.readbyqxmd.com/read/29439160/co-occurrence-of-depressive-symptoms-and-executive-dysfunction-after-stroke-associations-with-brain-pathology-and-prognosis
#1
Elles Douven, Pauline Aalten, Julie Staals, Syenna H J Schievink, Robert J van Oostenbrugge, Frans R J Verhey, Sebastian Köhler
OBJECTIVE: To examine, first, whether the co-occurrence of executive dysfunction (ED) and poststroke depression (PSD) shows different associations with neuroimaging markers and the course of depression and executive function, and second, whether it is associated with a different course on other cognitive domains and quality of life. METHODS: The present study included 245 stroke patients (35.9% female, mean age 67.5 years (SD=11.9). All patients completed neuropsychological and neuropsychiatric assessment 3 months poststroke, which were repeated at 6-month and 12-month follow-up...
February 8, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29437728/large-vessel-stroke-as-initial-presentation-of-thrombotic-thrombocytopenic-purpura
#2
Ryan Sugarman, Andrea M Tufano, Johnson M Liu
A 67-year-old right-handed woman presented with dysarthria, left upper extremity weakness and right-sided neglect of 3 hours duration. Imaging of the brain revealed acute right middle cerebral artery stroke; however, tissue plasminogen activator could not be administered due to severe thrombocytopenia. A peripheral smear revealed schistocytes and the patient was treated empirically for thrombotic thrombocytopenic purpura (TTP) with therapeutic plasma exchange. An extensive workup revealed no embolic source or other cause for stroke, and a diagnosis of large vessel infarct secondary to TTP was made...
February 5, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29436885/cerebral-perfusion-and-compensatory-blood-supply-in-patients-with-recent-small-subcortical-infarcts
#3
Salvatore Rudilosso, Carlos Laredo, Marco Mancosu, Nuria Moya-Planas, Yashu Zhao, Oscar Chirife, Ángel Chamorro, Xabier Urra
Hypoperfusion is the typical perfusion pattern associated with recent small subcortical infarcts of the brain, but other perfusion patterns may be present in patients with these infarcts. Using CT perfusion, we studied 67 consecutive patients who had a small subcortical infarct at a follow-up MRI study to investigate the correlation between the perfusion pattern and the clinical and radiological course. On CT perfusion map analysis, 51 patients (76%) had focal hypoperfusion, 4 patients (6%) had hyperperfusion and the remaining 12 patients (18%) showed no abnormalities...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29426582/frequency-of-acute-and-subacute-infarcts-in-a-population-based-study
#4
Catherine Arnold Fiebelkorn, Prashanthi Vemuri, Alejandro A Rabinstein, Michelle M Mielke, Scott A Przybelski, Kejal Kantarci, David T Jones, Robert D Brown, David S Knopman, Ronald C Petersen, Clifford R Jack, Jonathan Graff-Radford
OBJECTIVE: To determine the frequency of incidental acute or subacute cerebral infarction (CI) in a population-based study. PATIENTS AND METHODS: We identified 2095 participants aged 50 to 98 years in the population-based Mayo Clinic Study of Aging from October 23, 2009, to October 5, 2016, with a usable diffusion tensor imaging (DTI) sequence (total scans=3230). Acute and subacute infarcts were identified by neuroradiologists. For each participant, vascular risk factors, medications, clinical symptoms, and neurological examination near the time of the CI were abstracted from the medical record...
February 6, 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29425278/carotid-intima-media-thickness-and-silent-brain-infarctions-in-a-biracial-cohort-the-atherosclerosis-risk-in-communities-aric-study
#5
Melissa C Caughey, Ye Qiao, B Gwen Windham, Rebecca F Gottesman, Thomas H Mosley, Bruce A Wasserman
Background: Both hypertensive and atherosclerotic processes contribute to common carotid artery intima-media thickness (CCA-IMT). Elevated CCA-IMT may be indicative of subclinical cerebrovascular disease; however, its role in the absence of concomitant carotid artery plaque is uncertain, and few studies have examined associations in black populations. Materials and Methods: At cohort visit 3 (1993-1995) a subset of stroke-free participants (641 blacks and 702 whites, mean age 63) from the Atherosclerosis Risk in Communities (ARIC) study was imaged by brain MRI and carotid ultrasound...
February 7, 2018: American Journal of Hypertension
https://www.readbyqxmd.com/read/29410622/serum-hepatocyte-growth-factor-is-associated-with-small-vessel-disease-in-alzheimer-s-dementia
#6
Yanan Zhu, Saima Hilal, Yuek L Chai, M K Ikram, Narayanaswamy Venketasubramanian, Christopher P Chen, Mitchell K P Lai
Background: While hepatocyte growth factor (HGF) is known to exert cell growth, migration and morphogenic effects in various organs, recent studies suggest that HGF may also play a role in synaptic maintenance and cerebrovascular integrity. Although increased levels of HGF have been reported in brain and cerebrospinal fluid (CSF) samples of patients with Alzheimer's disease (AD), it is unclear whether peripheral HGF may be associated with cerebrovascular disease (CeVD) and dementia. In this study, we examined the association of baseline serum HGF with neuroimaging markers of CeVD in a cohort of pre-dementia (cognitive impaired no dementia, CIND) and AD patients...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29380913/vascular-dementia-clinicopathologic-and-genetic-considerations
#7
Harry V Vinters, Chris Zarow, Ewa Borys, Jeffrey D Whitman, Spencer Tung, William G Ellis, Ling Zheng, Helena C Chui
The incidence and severity of cerebrovascular disease (CVD) increase with advancing age, as does the risk of developing Alzheimer disease (AD). Not surprisingly, heterogeneous forms of CVD may coexist with AD changes in the 'aging brain'. These include angiopathies (affecting both large and small arteries) that result from 'classical' risk factors (hypertension, smoking, diabetes) and others (cerebral amyloid angiopathy) that are biochemically closely linked to AD. The morphologic consequences of these various vascular diseases are infarcts and/or haemorrhages of varying sizes within the brain, which lead to neurocognitive decline that may mimic AD-though the vascular abnormalities are usually detectable by neuroimaging...
January 30, 2018: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/29377234/lncrna-snhg1-regulates-cerebrovascular-pathologies-as-a-competing-endogenous-rna-through-hif-1%C3%AE-vegf-signaling-in-ischemic-stroke
#8
Lin Zhang, Xianliang Luo, Feng Chen, Wei Yuan, Xinli Xiao, Xiaohua Zhang, Yaru Dong, Yuanxiao Zhang, Yong Liu
Studies have shown that long noncoding ribonucleic acids (lncRNAs) play critical roles in multiple biologic processes. However, the Small Nucleolar RNA Host Gene 1 (SNHG1) function and underlying molecular mechanisms in ischemic stroke have not yet been reported. In the present study, we found that SNHG1 expression was remarkably increased both in isolated cerebral micro-vessels of a middle cerebral artery occlusion (MCAO) mice model, and in oxygen-glucose deprivation (OGD)-cultured mice brain micro-vascular endothelial cells (BMECs), meanwhile, the SNHG1 level was negatively correlated with miR-18a in MCAO mice...
January 27, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29372928/albuminuria-and-cerebral-small-vessel-disease-a-systematic-review-and-meta-analysis
#9
Marios K Georgakis, Despoina Chatzopoulou, Georgios Tsivgoulis, Eleni Th Petridou
OBJECTIVES: To determine whether albuminuria, a marker of systemic endothelial dysfunction, is associated with cerebral small vessel disease (SVD). DESIGN: Systematic review following the Meta-analyses Of Observational Studies in Epidemiology guidelines; independent reviewers searched Pubmed/Medline and Scopus, data were extracted, studies were evaluated on quality, and random-effects models were implemented for meta-analysis. SETTING: Observational studies quantifying an association between albuminuria and cerebral SVD...
January 25, 2018: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/29368226/lateral-medullary-infarction-with-cardiovascular-autonomic-dysfunction-an-unusual-presentation-with-review-of-the-literature
#10
REVIEW
Tridu R Huynh, Barbara Decker, Timothy J Fries, Ajay Tunguturi
PURPOSE: We report an unusual case of lateral medullary infarction presenting with orthostatic hypotension with pre-syncope without vertigo or Horner's syndrome. METHODS: Case report with review of the literature. RESULTS: A 67-year-old man presented with pre-syncope and ataxia without vertigo. Initial brain CT and MRI were normal. Neurological evaluation revealed right-beating nystagmus with left gaze, vertical binocular diplopia, right upper-extremity dysmetria, truncal ataxia with right axial lateropulsion, and right-facial and lower extremity hypoesthesia...
January 24, 2018: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/29354213/neuroimaging-in-cerebral-small-vessel-disease-update-and-new-concepts
#11
Mika Shibuya, Claudia da Costa Leite, Leandro Tavares Lucato
In recent years, small vessel disease (SVD) has been recognized for its major impact on cognitive impairment in elderly people, where it is often difficult to separate its effects from those of neurodegenerative diseases individually. SVD is a systemic disease, probably related to diffuse endothelial dysfunction, which affects the perforating arterioles, capillaries and venules in the brain. Although often asymptomatic, it is responsible for almost half of all dementia cases and a significant proportion of stroke cases...
October 2017: Dementia & Neuropsychologia
https://www.readbyqxmd.com/read/29338310/therapy-induced-plasticity-in-chronic-aphasia-is-associated-with-behavioral-improvement-and-time-since-stroke
#12
Priya Santhanam, E Susan Duncan, Steven L Small
Cortical reorganization after stroke is thought to underlie functional improvement. Patterns of reorganization may differ depending on the amount of time since the stroke or the degree of improvement. We investigated these issues in a study of brain connectivity changes with aphasia therapy. Twelve individuals with chronic aphasia participated in a 6-week trial of imitation-based speech therapy. We assessed improvement on a repetition test and analyzed effective connectivity during functional magnetic resonance imaging (fMRI) of a speech observation task before and after therapy...
January 16, 2018: Brain Connectivity
https://www.readbyqxmd.com/read/29327152/the-prevalence-and-impact-of-status-epilepticus-secondary-to-intracerebral-hemorrhage-results-from-the-us-nationwide-inpatient-sample
#13
Amol Mehta, Benjamin E Zusman, Lori A Shutter, Ravi Choxi, Ahmed Yassin, Arun Antony, Parthasarathy D Thirumala
BACKGROUND: Status epilepticus (SE) has been identified as a predictor of morbidity and mortality in many acute brain injury patient populations. We aimed to assess the prevalence and impact of SE after intracerebral hemorrhage (ICH) in a large patient sample to overcome limitations in previous small patient sample studies. METHODS: We queried the Nationwide Inpatient Sample for patients admitted for ICH from 1999 to 2011, excluding patients with other acute brain injuries...
January 11, 2018: Neurocritical Care
https://www.readbyqxmd.com/read/29311265/burden-of-dilated-perivascular-spaces-an-emerging-marker-of-cerebral-small-vessel-disease-is-highly-heritable
#14
Marie-Gabrielle Duperron, Christophe Tzourio, Muralidharan Sargurupremraj, Bernard Mazoyer, Aïcha Soumaré, Sabrina Schilling, Philippe Amouyel, Ganesh Chauhan, Yi-Cheng Zhu, Stéphanie Debette
BACKGROUND AND PURPOSE: The genetic contribution to dilated perivascular space (dPVS) burden-an emerging MRI marker of cerebral small vessel disease-is unknown. We measured the heritability of dPVS burden and its shared heritability with other MRI markers of cerebral small vessel disease. METHODS: The study sample comprised 1597 participants from the population-based Three City (3C) Dijon Study, with brain MRI and genome-wide genotyping (mean age, 72.8±4.1 years; 61% women)...
February 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29299869/combination-therapy-with-low-dose-ivig-and-a-c1-esterase-inhibitor-ameliorates-brain-damage-and-functional-deficits-in-experimental-ischemic-stroke
#15
Xinzhi Chen, Thiruma V Arumugam, Yi-Lin Cheng, Jong-Hwan Lee, Srinivasulu Chigurupati, Mark P Mattson, Milan Basta
Acute ischemic stroke causes a high rate of deaths and permanent neurological deficits in survivors. Current interventional treatment, in the form of enzymatic thrombolysis, benefits only a small percentage of patients. Brain ischemia triggers mobilization of innate immunity, specifically the complement system and Toll-like receptors (TLRs), ultimately leading to an exaggerated inflammatory response. Here we demonstrate that intravenous immunoglobulin (IVIG), a scavenger of potentially harmful complement fragments, and C1-esterase inhibitor (C1-INH), an inhibitor of complement activation, exert a beneficial effect on the outcome of experimental brain ischemia (I) and reperfusion (R) injury induced by transient occlusion of middle cerebral artery in mice...
January 3, 2018: Neuromolecular Medicine
https://www.readbyqxmd.com/read/29276498/role-of-hyperintense-acute-reperfusion-marker-for-classifying-the-stroke-etiology
#16
Hee Young Choi, Kyung Mi Lee, Hyug-Gi Kim, Eui Jong Kim, Woo Suk Choi, Bum Joon Kim, Sung Hyuk Heo, Dae-Il Chang
Purpose: The hyperintense acute reperfusion marker (HARM) is a delayed enhancement of the subarachnoid or subpial space observed on post-contrast fluid-attenuated inversion recovery (FLAIR) images and is associated with permeability changes to the blood-brain barrier in acute stroke. We investigated the relationship between HARM and stroke etiology based on the Trial of ORG 10172 in Acute Stroke Treatment (TOAST) classification. In addition, we evaluated the relationship between HARM and stroke locations with respect to vascular territories and anatomic compartments...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29273521/the-pathology-and-pathophysiology-of-vascular-dementia
#17
REVIEW
Raj N Kalaria
Vascular dementia (VaD) is widely recognised as the second most common type of dementia. Consensus and accurate diagnosis of clinically suspected VaD relies on wide-ranging clinical, neuropsychological and neuroimaging measures in life but more importantly pathological confirmation. Factors defining subtypes of VaD include the nature and extent of vascular pathologies, degree of involvement of extra and intracranial vessels and the anatomical location of tissue changes as well as time after the initial vascular event...
December 19, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29260015/evolution-into-moyamoya-disease-in-an-infant-with-internal-carotid-artery-aneurysms
#18
Ryosuke Tanaka, Satoru Takahashi, Satomi Okano, Akie Okayama, Nao Suzuki, Shigeo Kure, Hiroshi Azuma
Introduction: Moyamoya disease (MMD) is characterized by progressive stenosis and occlusion in the terminal portion of both internal carotid arteries (ICAs) and the formation of an abnormal vascular network. Because of the fragile structure of the collateral vessels, MMD is frequently accompanied by intracranial aneurysms that are mainly located within the abnormal basal network or the circle of Willis. However, the association between MMD and aneurysms of the ICAs has never been reported previously...
March 2017: ENeurologicalSci
https://www.readbyqxmd.com/read/29260010/musical-visual-and-cognitive-deficits-after-middle-cerebral-artery-infarction
#19
Stephanie Rosemann, Freimuth Brunner, Andreas Kastrup, Manfred Fahle
The perception of music can be impaired after a stroke. This dysfunction is called amusia and amusia patients often also show deficits in visual abilities, language, memory, learning, and attention. The current study investigated whether deficits in music perception are selective for musical input or generalize to other perceptual abilities. Additionally, we tested the hypothesis that deficits in working memory or attention account for impairments in music perception. Twenty stroke patients with small infarctions in the supply area of the middle cerebral artery were investigated with tests for music and visual perception, categorization, neglect, working memory and attention...
March 2017: ENeurologicalSci
https://www.readbyqxmd.com/read/29244126/silent-cerebral-small-vessel-disease-twice-as-prevalent-in-middle-aged-well-controlled-cart-treated-hiv-infected-individuals-than-hiv-uninfected-individuals
#20
Antoine Moulignier, Julien Savatovsky, Lambert Assoumou, François-Xavier Lescure, Cédric Lamirel, Ophelia Godin, Nadia Valin, Roland Tubiana, Ana Canestri, Pascal Roux, Jean-Claude Sadik, Laurence Salomon, Marie Abrivard, Christine Katlama, Yazdan Yazdanpanah, Gilles Pialoux, Pierre-Marie Girard, Dominique Costagliola
Background: Silent cerebral small-vessel disease (CSVD) is defined as white matter hyperintensities, silent brain infarction or microbleeds. CSVD is responsible for future vascular events, cognitive impairment, frailty and shorter survival. CSVD prevalence among middle-aged persons living with well-controlled HIV infection (PLHIVs) is unknown. Methods: ANRS EP51 MicroBREAK (NCT02082574) is a cross-sectional study with prospective enrollment of treated PLHIVs, ≥50 years old with viral load controlled for ≥12 months, and frequency age- and sex-matched HIV-uninfected controls (HUCs)...
December 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
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