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https://www.readbyqxmd.com/read/28547878/mesiotemporal-atrophy-and-hippocampal-diffusivity-distinguish-amnestic-from-non-amnestic-vascular-cognitive-impairment
#1
A A Hosseini, D Meng, R J Simpson, D P Auer
BACKGROUND AND PURPOSE: The role of clinical factors, cerebral infarcts and hippocampal damage in vascular cognitive impairment (VCI) subtypes remains unclear. METHODS: Non-demented patients with carotid stenosis and recent transient ischemic attack/stroke had cognitive assessment and brain magnetic resonance imaging (MRI). Amnestic VCI was defined as memory impairment; non-amnestic VCI was any other subdomain impairment. Associations of MRI metrics [log-transformed total ischemic lesion load (log TILL), mesiotemporal atrophy (MTA) score, hippocampal mean diffusivity (hipMD)] with cognitive performance were assessed...
May 26, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28536425/intravenous-thrombolysis-in-chinese-patients-with-different-subtype-of-mild-stroke-thrombolysis-in-patients-with-mild-stroke
#2
Weiqi Chen, Yuesong Pan, Xingquan Zhao, Liping Liu, Hao Li, Xiaoling Liao, Chunjuan Wang, Yilong Wang, Yongjun Wang
Thrombolysis treatment for patients with mild stroke is controversial. The aim of our study was to investigate whether patients with mild stroke or its specific etiologic subtype might benefit from rt-PA therapy. Data were derived from two cohorts of patients with and without rt-PA treatment: (1) the Thrombolysis Implementation and Monitor of Acute Ischemic Stroke in China (TIMS-China) and (2) the China National Stroke Registry (CNSR) database. Patients with mild stroke (defined as National Institutes of Health Stroke Scale ≤5) receiving the rt-PA therapy and without rt-PA therapy were matched in 1:2 for age, sex, stroke severity and etiologic subtype...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28535167/invited-commentary-heterogeneity-of-cardiovascular-diseases-among-populations-recognition-and-seminal-explanations
#3
Aaron R Folsom
Kuller and Reisler's 1971 publication (Am J Epidemiol. 1971;93(1):1-9) was an important contribution to the understanding of the epidemiology of cardiovascular diseases, particularly stroke. The authors synthesized pathological and risk-factor evidence to theorize why rates of various subtypes of arterial disease might vary across populations. Specifically, they suggested that different population levels of blood pressure, lipids, and glucose led to population differences in the location and extent of arterial disease...
May 23, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28535100/the-national-institutes-of-health-stroke-scale-its-role-in-patients-with-posterior-circulation-stroke
#4
Antonio Siniscalchi, Roman Sztajzel, Giovanni Malferrari, Luca Gallelli
The National Institutes of Health Stroke Scale (NIHSS) is indispensable for both prognosis and treatment in patients with acute ischemic stroke. However, there is subtype of acute ischemic stroke (i.e., posterior circulation stroke) that is difficult to diagnose using the NIHSS. The authors report the limits of NIHSS in this stroke subtype, suggesting thereby the need to modify and render it more appropriate for the evaluation of the neurological signs occurring in posterior circulation stroke.
May 23, 2017: Hospital Topics
https://www.readbyqxmd.com/read/28531882/%C3%AE-thromboglobulin-and-incident-cardiovascular-disease-risk-the-atherosclerosis-risk-in-communities-study
#5
Yasuhiko Kubota, Alvaro Alonso, Aaron R Folsom
INTRODUCTION: Although it has been suggested that increased concentrations of activated platelet biomarkers are associated with increased risk of incident cardiovascular disease (CVD) in the general population, evidence for this association is still controversial. Thus, we tested the hypothesis that activated platelets, measured by higher concentrations of β-thromboglobulin, are associated with increased risk of incident CVD (coronary heart disease, heart failure ischemic stroke, and atrial fibrillation)...
May 17, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28529954/%C3%AE-7-nicotinic-acetylcholine-receptor-stimulation-attenuates-neuroinflammation-through-jak2-stat3-activation-in-murine-models-of-intracerebral-hemorrhage
#6
Paul R Krafft, Devin McBride, William B Rolland, Tim Lekic, Jerry J Flores, John H Zhang
Accounting for high mortality and morbidity rates, intracerebral hemorrhage (ICH) remains one of the most detrimental stroke subtypes lacking a specific therapy. Neuroinflammation contributes to ICH-induced brain injury and is associated with unfavorable outcomes. This study aimed to evaluate whether α7 nicotinic acetylcholine receptor (α7nAChR) stimulation ameliorates neuroinflammation after ICH. Male CD-1 mice and Sprague-Dawley were subjected to intracerebral injection of autologous blood or bacterial collagenase...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28524175/modulators-of-microglial-activation-and-polarization-after-intracerebral-haemorrhage
#7
REVIEW
Xi Lan, Xiaoning Han, Qian Li, Qing-Wu Yang, Jian Wang
Intracerebral haemorrhage (ICH) is the most lethal subtype of stroke but currently lacks effective treatment. Microglia are among the first non-neuronal cells on the scene during the innate immune response to ICH. Microglia respond to acute brain injury by becoming activated and developing classic M1-like (proinflammatory) or alternative M2-like (anti-inflammatory) phenotypes. This polarization implies as yet unrecognized actions of microglia in ICH pathology and recovery, perhaps involving microglial production of proinflammatory or anti-inflammatory cytokines and chemokines...
May 19, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28515266/total-small-vessel-disease-score-and-risk-of-recurrent-stroke-validation-in-2-large-cohorts
#8
Kui Kai Lau, Linxin Li, Ursula Schulz, Michela Simoni, Koon Ho Chan, Shu Leong Ho, Raymond Tak Fai Cheung, Wilhelm Küker, Henry Ka Fung Mak, Peter M Rothwell
OBJECTIVE: In patients with TIA and ischemic stroke, we validated the total small vessel disease (SVD) score by determining its prognostic value for recurrent stroke. METHODS: Two independent prospective studies were conducted, one comprising predominantly Caucasian patients with TIA/ischemic stroke (Oxford Vascular Study [OXVASC]) and one predominantly Chinese patients with ischemic stroke (University of Hong Kong [HKU]). Cerebral MRI was performed and assessed for lacunes, microbleeds, white matter hyperintensities (WMH), and perivascular spaces (PVS)...
May 17, 2017: Neurology
https://www.readbyqxmd.com/read/28501930/association-of-gwas-reported-variant-rs11196288-near-habp2-with-ischemic-stroke-in-chinese-han-population
#9
Shao-Hua Li, Chang-He Shi, Yu-Sheng Li, Fang Li, Mi-Bo Tang, Xin-Jing Liu, Shuo Zhang, Zhi-Lei Wang, Bo Song, Yu-Ming Xu
A recent genome-wide association analysis identified a novel single nucleotide polymorphism locus on chromosome 10q25.3 (rs11196288, near HABP2) associated with the risk of early-onset ischemic stroke (IS) in European population, but not with late-onset IS. However, the role of this genome-wide association study (GWAS)-reported variant in ischemic stroke in Chinese Han population remained unknown. In our study, 389 adult ischemic stroke patients with an age of onset <60 years and 389 matched healthy controls were enrolled to investigate association of rs11196288 genotypes with early-onset ischemic stroke and its subtypes; the association was further examined in another independent population consisting of 349 ischemic stroke patients with an age of onset ≧60 years and 349 matched healthy individuals...
May 13, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28500271/causal-associations-of-adiposity-and-body-fat-distribution-with-coronary-heart-disease-stroke-subtypes-and-type-2-diabetes-a-mendelian-randomization-analysis
#10
Caroline Dale, Ghazaleh Fatemifar, Tom Palmer, Jonathan White, David Prieto-Merino, Delilah Zabaneh, Jorgen E L Engmann, Tina Shah, Andrew Wong, Helen R Warren, Stela McLachlan, Stella Trompet, Max Moldovan, Richard W Morris, Reecha Sofat, Meena Kumari, Elina Hyppönen, Barbara J Jefferis, Tom R Gaunt, Yoav Ben-Shlomo, Ang Zhou, Aleksandra Gentry-Maharaj, Andy Ryan, Renée de Mutsert, Raymond Noordam, Mark J Caulfield, J Wouter Jukema, Bradford B Worrall, Patricia B Munroe, Usha Menon, Chris Power, Diana Kuh, Debbie A Lawlor, Steve E Humphries, Dennis O Mook-Kanamori, George Davey Smith, Naveed Sattar, Mika Kivimaki, Jacqueline F Price, Frank Dudbridge, Aroon D Hingorani, Michael V Holmes, Juan-Pablo Casas
Background -Implications of different adiposity measures on cardiovascular disease aetiology remain unclear. In this paper we quantify and contrast causal associations of central adiposity (waist:hip ratio adjusted for BMI (WHRadjBMI)) and general adiposity (body mass index (BMI)) with cardiometabolic disease. Methods -97 independent single nucleotide polymorphisms (SNPs) for BMI and 49 SNPs for WHRadjBMI were used to conduct Mendelian randomization analyses in 14 prospective studies supplemented with CHD data from CARDIoGRAMplusC4D (combined total 66,842 cases), stroke from METASTROKE (12,389 ischaemic stroke cases), type 2 diabetes (T2D) from DIAGRAM (34,840 cases), and lipids from GLGC (213,500 participants) consortia...
May 12, 2017: Circulation
https://www.readbyqxmd.com/read/28496431/sex-differences-in-outcomes-among-stroke-survivors-with-non-valvular-atrial-fibrillation-in-china
#11
Yan Hong, Xun Yang, Wenjuan Zhao, Xianghui Zhang, Junli Zhao, Yuanju Yang, Xianjia Ning, Jinghua Wang, Zhongping An
Atrial fibrillation (AF) significantly increases the risk of stroke and disease burden and is an established predictor of poor outcomes after stroke. However, data regarding sex differences in long-term outcomes following stroke in patients with AF are scarce. We thus aimed to assess these differences. We recruited 951 consecutive patients with acute ischemic stroke and non-valvular atrial fibrillation (NVAF) treated at three hospitals in Tianjin, China, from January 2006 to September 2014. Information regarding stroke subtype, severity, risk factors, and outcomes (mortality, dependency, and recurrence) at 3, 12, and 36 months after stroke was recorded...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28487994/cd74-immunoreactive-activated-m1-microglia-are-shown-late-in-the-gerbil-hippocampal-ca1-region-following-transient-cerebral-ischemia
#12
In Koo Hwang, Joon Ha Park, Tae-Kyeong Lee, Dae Won Kim, Ki-Yeon Yoo, Ji Hyeon Ahn, Yang Hee Kim, Jun Hwi Cho, Young-Myeong Kim, Moo-Ho Won, Seung Myung Moon
Activated M1 microglia secrete proinflammatory cytokines into damaged brain areas. The present study examined activated M1 microglial morphology and expression in the hippocampal Cornu Ammonis (CA) 1 region, which is vulnerable to transient ischemia. Transient cerebral ischemia was performed for 5 min in gerbils, and neuronal death in the CA1 region following transient cerebral ischemia was confirmed using cresyl violet staining, neuronal nuclear antigen immunohistochemistry and Fluoro‑Jade B histofluorescent staining...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28487340/dietary-protein-intake-and-stroke-risk-in-a-general-japanese-population-the-hisayama-study
#13
Mio Ozawa, Daigo Yoshida, Jun Hata, Tomoyuki Ohara, Naoko Mukai, Mao Shibata, Kazuhiro Uchida, Masashi Nagata, Takanari Kitazono, Yutaka Kiyohara, Toshiharu Ninomiya
BACKGROUND AND PURPOSE: The influence of dietary protein intake on stroke risk is an area of interest. We investigated the association between dietary protein intake and stroke risk in Japanese, considering sources of protein. METHODS: A total of 2400 subjects aged 40 to 79 years were followed up for 19 years. Dietary protein intake was estimated using a 70-item semiquantitative food frequency questionnaire. The risk estimates for incident stroke and its subtypes were calculated using a Cox proportional hazards model...
May 9, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28484930/heart-shaped-bilateral-medullary-pyramidal-infarction-as-a-pathognomonic-finding-of-anterior-spinal-artery-occlusion
#14
Sammy Searcy, Oluwaseun O Akinduro, Andrew Spector, Jang W Yoon, Benjamin L Brown, William D Freeman
BACKGROUND: Unilateral anterior spinal artery (ASA) occlusion resulting in bilateral medullary pyramidal (BMP) infarction is a rare and devastating stroke subtype. We present two cases highlighting the diagnostic and clinical challenges of BMP infarction. METHODS: Case reports and literature review. RESULTS: A 57-year-old man rapidly had severe vomiting and diarrhea 2 h after a meal. Examination revealed bulbar weakness and areflexic tetraplegia...
May 8, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28483775/age-specific-vascular-risk-factor-profiles-according-to-stroke-subtype
#15
Allard J Hauer, Ynte M Ruigrok, Ale Algra, Ewoud J van Dijk, Peter J Koudstaal, Gert-Jan Luijckx, Paul J Nederkoorn, Robert J van Oostenbrugge, Marieke C Visser, Marieke J Wermer, L Jaap Kappelle, Catharina J M Klijn
BACKGROUND: Ischemic and hemorrhagic stroke are increasingly recognized as heterogeneous diseases with distinct subtypes and etiologies. Information on variation in distribution of vascular risk factors according to age in stroke subtypes is limited. We investigated the prevalence of vascular risk factors in stroke subtypes in relation to age. METHODS AND RESULTS: We studied a prospective multicenter university hospital-based cohort of 4033 patients. For patients with ischemic stroke caused by large artery atherosclerosis, small vessel disease, or cardioembolism and for patients with spontaneous intracerebral hemorrhage or aneurysmal subarachnoid hemorrhage, we calculated prevalences of vascular risk factors in 4 age groups: <55, 55 to 65, 65 to 75, and ≥75 years, and mean differences with 95% CIs in relation to the reference age group...
May 8, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28481238/the-adenosinergic-system-as-a-therapeutic-target-in-the-vasculature-new-ligands-and-challenges
#16
REVIEW
Joana Beatriz Sousa, Carmen Diniz
Adenosine is an adenine base purine with actions as a modulator of neurotransmission, smooth muscle contraction, and immune response in several systems of the human body, including the cardiovascular system. In the vasculature, four P1-receptors or adenosine receptors-A₁, A2A, A2B and A₃-have been identified. Adenosine receptors are membrane G-protein receptors that trigger their actions through several signaling pathways and present differential affinity requirements. Adenosine is an endogenous ligand whose extracellular levels can reach concentrations high enough to activate the adenosine receptors...
May 6, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28479795/prevalence-of-cerebral-microbleeds-in-thai-patients-with-ischemic-stroke
#17
Artit Potigumjon, Arvemas Watcharakorn, Pornpatr A Dharmasaroja
BACKGROUND: With the widespread use of magnetic resonance imaging (MRI), cerebral microbleeds (CMBs) are commonly detected. Ethnicity seems to play a role in the prevalence of CMB, with higher prevalence in participants from Asian origin. The purpose of the study is to look for the prevalence of CMBs and associated factors in Thai patients with ischemic stroke. METHODS: Patients with acute ischemic stroke who had MRI and magnetic resonance angiography during January-August 2014 were included in the study...
April 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28468926/atrial-fibrillation-genetic-risk-and-ischemic-stroke-mechanisms
#18
Steven A Lubitz, Owen E Parsons, Christopher D Anderson, Emelia J Benjamin, Rainer Malik, Lu-Chen Weng, Martin Dichgans, Cathie L Sudlow, Peter M Rothwell, Jonathan Rosand, Patrick T Ellinor, Hugh S Markus, Matthew Traylor
BACKGROUND AND PURPOSE: Atrial fibrillation (AF) is a leading cause of cardioembolic stroke, but the relationship between AF and noncardioembolic stroke subtypes are unclear. Because AF may be unrecognized, and because AF has a substantial genetic basis, we assessed for predisposition to AF across ischemic stroke subtypes. METHODS: We examined associations between AF genetic risk and Trial of Org 10172 in Acute Stroke Treatment stroke subtypes in 2374 ambulatory individuals with ischemic stroke and 5175 without from the Wellcome Trust Case-Control Consortium 2 using logistic regression...
May 3, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28462903/long-term-outcomes-after-tavi-in-patients-with-different-types-of-aortic-stenosis-the-conundrum-of-low-flow-low-gradient-and-low-ejection-fraction
#19
Miriam Puls, Kerstin Pia Korte, Annalen Bleckmann, Mark Huenlich, Bernhard C Danner, Friedrich Schoendube, Gerd Hasenfuß, Claudius Jacobshagen, Wolfgang Schillinger
AIMS: We examined the impact of guidelines-defined subtypes of severe aortic stenosis (AS) on long-term outcomes after TAVI. METHODS AND RESULTS: 400 consecutive patients who underwent TAVI (203 transapical, 197 transfemoral) at our institution 8/2008-3/2013 were followed systematically (up to 7 years). 147 individuals suffered from NEF-HG AS (LV-EF ≥50%, high Pmean ≥40mmHg), 63 from LEF-HG AS (LV-EF <50%, high gradient), 77 from PLF-LG AS (LV-EF ≥50%, low gradient, stroke volume index (SVI) <35 ml/m²), and 81 from LEF-LG AS (LV-EF <50%, low gradient)...
May 2, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28459623/chronic-obstructive-pulmonary-disease-and-the-risk-of-stroke
#20
Ann D Morgan, Chetna Sharma, Kieran J Rothnie, James Potts, Liam Smeeth, Jennifer K Quint
RATIONALE: Chronic obstructive pulmonary disease (COPD) has been identified as a risk factor for cardiovascular diseases such as myocardial infarction. The role of COPD in cerebrovascular disease is, however, less certain. Although earlier studies have suggested that the risk for stroke is also increased in COPD, more recent investigations have generated mixed results. OBJECTIVES: The primary objective of our review was to quantify the magnitude of the association between COPD and stroke...
May 2017: Annals of the American Thoracic Society
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