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Transient ischemic stroke

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https://www.readbyqxmd.com/read/28731692/quinolinyl-nitrone-rp19-induces-neuroprotection-after-transient-brain-ischemia
#1
Maria Irene Ayuso, Emma Martinez-Alonso, Mourad Chioua, Alejandro Escobar-Peso, Rafael Gonzalo-Gobernado, Joan Montaner, José Marco-Contelles, Alberto Alcazar
There is a need to develop additional effective therapies for ischemic stroke. Nitrones, which were first developed as reactive oxygen species (ROS)-trapping compounds, have been proposed as neuroprotective agents for ischemic stroke, a ROS-related disorder. The previous reported ROS-trapping compound, quinolyl nitrone RP19, is here being assayed to induce neuroprotection to ischemia-reperfusion injury in three experimental ischemia models: (i), oxygen-glucose deprivation (OGD) on primary neuronal cultures; (ii), transient global cerebral ischemia in four-vessel occlusion model; and (iii), transient focal cerebral ischemia in middle cerebral artery occlusion (tMCAO) model...
July 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28730948/nonvitamin-k-antagonist-oral-anticoagulants-versus-warfarin-in-patients-with-atrial-fibrillation-and-previous-stroke-or-transient-ischemic-attack-an-updated-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#2
George Ntaios, Vasileios Papavasileiou, Hans-Chris Diener, Konstantinos Makaritsis, Patrik Michel
Background In a previous systematic review and meta-analysis, we assessed the efficacy and safety of nonvitamin-K antagonist oral anticoagulants versus warfarin in patients with atrial fibrillation and stroke or transient ischemic attack. Since then, new information became available. Aim The aim of the present work was to update the results of the previous systematic review and meta-analysis. Methods We searched PubMed until 24 August 2016 for randomized controlled trials using the following search items: "atrial fibrillation" and "anticoagulation" and "warfarin" and "previous stroke or transient ischemic attack...
August 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28730259/clinical-manifestations-and-morphological-changes-in-one-case-with-post-stroke-kl%C3%A3-ver-bucy-syndrome
#3
Nicolae Cătălin Hreniuc, Carmen NeamŢu, Mircea Florin Sferdian, Cristina Georgiana Ghib Para, Cris Virgiliu Precup, Ioan Ioiart
We present the case of a 71-year-old right-handed male, admitted to the Department of Neurology, Emergency County Hospital of Arad, Romania, on November 2015, with a rare case of Klüver-Bucy syndrome (KBS), following an ischemic stroke of the right temporal lobe, which was previously diagnosed in December 2014 and was treated accordingly. At the moment of second hospital admission, the patient was found somnolent and confused at home, with traumatic signs of biting of the tongue and urine emission. A couple days after admission, our patient became alert and presented hypersexuality, hypermetamorphosis, increased oral tendency, behavior changes including apathy with loss of anger and fear, and a very increased appetite, transient visual agnosia and right-left disorientation...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28729825/dexmedetomidine-protects-mouse-brain-from-ischemia-reperfusion-injury-via-inhibiting-neuronal-autophagy-through-up-regulating-hif-1%C3%AE
#4
Cong Luo, Ming-Wen Ouyang, Ying-Ying Fang, Shu-Ji Li, Quan Zhou, Jun Fan, Zai-Sheng Qin, Tao Tao
Stroke is the leading cause of death in China and produces a heavy socio-economic burden in the past decades. Previous studies have shown that dexmedetomidine (DEX) is neuroprotective after cerebral ischemia. However, the role of autophagy during DEX-mediated neuroprotection after cerebral ischemia is still unknown. In this study, we found that post-conditioning with DEX and DEX+3-methyladenine (3-MA) (autophagy inhibitor) reduced brain infarct size and improved neurological deficits compared with DEX+RAPA (autophagy inducer) 24 h after transient middle cerebral artery artery occlusion (tMCAO) model in mice...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28729407/long-term-stroke-risk-prediction-in-patients-with-atrial-fibrillation-comparison-of-the-abc-stroke-and-cha2ds2-vasc-scores
#5
José Miguel Rivera-Caravaca, Vanessa Roldán, María Asunción Esteve-Pastor, Mariano Valdés, Vicente Vicente, Gregory Y H Lip, Francisco Marín
BACKGROUND: The ABC-stroke score (age, biomarkers [N-terminal fragment B-type natriuretic peptide, high-sensitivity troponin], and clinical history [prior stroke/transient ischemic attack]) was proposed to predict stroke in atrial fibrillation (AF). This score was derived/validated in 2 clinical trial cohorts in which patients with AF were highly selected and carefully followed-up. However, the median follow-up was 1.9 years in the trial cohort; therefore, its long-term predictive performance remains uncertain...
July 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28727668/comprehensive-cardiac-rehabilitation-for-secondary-prevention-after-transient-ischemic-attack-or-mild-stroke-psychological-profile-and-outcomes
#6
Peter L Prior, Vladimir Hachinski, Richard Chan, Karen Unsworth, Sharon Mytka, Michael Harnadek, Christina OʼCallaghan, Neville Suskin
PURPOSE: Having previously reported that comprehensive cardiac rehabilitation (CCR) is effective for secondary prevention post-transient ischemic attack (TIA)/mild nondisabling stroke (MNDS), we present psychometric findings for the same sample that elucidate subacute TIA/MNDS psychological outcomes and test whether CCR would be independently associated with psychological improvements. METHODS: In this prospective cohort trial patients with ≥1 risk factor, recruited from a stroke prevention clinic within 12 months (mean = 11...
July 19, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28726649/lipoprotein-associated-phospholipase-a2-as-a-marker-of-vulnerable-atherosclerotic-plaque-in-patients-with-internal-carotid-artery-stenosis
#7
P Štefanič, I Kopolovets, Z Hertelyová, Š Tóth, M Frankovičová
The aim of this study was to compare the concentration of inflammatory vascular markers and morphological structure of atherosclerotic plaque in symptomatic and asymptomatic patients with the stenosis of internal carotid artery (ICA). The research was carried out in 70 patients with hemodynamically significant stenosis of ICA out of which 40 (57%) were asymptomatic patients and 30 (43%) were symptomatic patients, of which 20 patients (66%) have had a stroke, or transient ischemic attack (TIA), 10 patients (33%)...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28725658/mesenchymal-stem-cells-overexpressing-interleukin-10-promote-neuroprotection-in-experimental-acute-ischemic-stroke
#8
Masataka Nakajima, Chikako Nito, Kota Sowa, Satoshi Suda, Yasuhiro Nishiyama, Aki Nakamura-Takahashi, Yuko Nitahara-Kasahara, Kiwamu Imagawa, Tohru Hirato, Masayuki Ueda, Kazumi Kimura, Takashi Okada
Interleukin (IL)-10 is a contributing factor to neuroprotection of mesenchymal stem cell (MSC) transplantation after ischemic stroke. Our aim was to increase therapeutic effects by combining MSCs and ex vivo IL-10 gene transfer with an adeno-associated virus (AAV) vector using a rat transient middle cerebral artery occlusion (MCAO) model. Sprague-Dawley rats underwent 90 min MCAO followed by intravenous administration of MSCs alone or IL-10 gene-transferred MSCs (MSC/IL-10) at 0 or 3 hr after ischemia reperfusion...
September 15, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28724745/seq-identifies-circulating-mir-125a-5p-mir-125b-5p-and-mir-143-3p-as-potential-biomarkers-for-acute-ischemic-stroke
#9
Steffen Tiedt, Matthias Prestel, Rainer Malik, Nicola Schieferdecker, Marco Düring, Veronika Kautzky, Ivelina Stoycheva, Julia Böck, Bernd H Northoff, Matthias Klein, Franziska Dorn, Knut Krohn, Daniel Teupser, Arthur Liesz, Nikolaus Plesnila, Lesca M Holdt, Martin Dichgans
Rationale: Currently, there are no blood-based biomarkers with clinical utility for acute ischemic stroke (IS). microRNAs (miRNAs) show promise as disease markers due to their cell-type specific expression patterns and stability in peripheral blood. Objective: To identify circulating miRNAs associated with acute IS, determine their temporal course up to 90 days post-stroke, and explore their utility as an early diagnostic marker. Methods and Results: We used RNA sequencing to study expression changes of circulating miRNAs in a discovery sample of 20 IS patients and 20 matched healthy control subjects (HCs)...
July 19, 2017: Circulation Research
https://www.readbyqxmd.com/read/28724339/influence-of-cerebrovascular-reactivity-on-outcome-of-the-patients-with-%C3%A2-50-symptomatic-unilateral-middle-cerebral-artery-stenosis
#10
Weiqing Zhang, Yanwei Yin, Yingqian Zhang, Fen Yang, Wenqian Shi, Dawei Chen, Chen Song, Huiping Shi, Xuanzhu Zhao, Jin Shi
Cerebrovascular reactivity (CVR) reflects the vasodilatory reserve of cerebral resistance vessels, which is an important marker for assessing cerebrovascular disease. The present study is to investigate whether CVR impairment increases adverse long-term outcome risk of patients with ≥ 50% symptomatic unilateral middle cerebral artery (MCA) stenosis (ischemic stroke (IS) or transient ischemic attack (TIA)). Digital subtraction angiography (DSA) was used to assess the degree of stenosis, and perfusion CT and 5% CO2 inhalation were adopted to evaluate CVR...
July 20, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28720658/ticagrelor-versus-aspirin-in-acute-embolic-stroke-of-undetermined-source
#11
Pierre Amarenco, Gregory W Albers, Hans Denison, J Donald Easton, Scott R Evans, Peter Held, Michael D Hill, Jenny Jonasson, Scott E Kasner, Per Ladenvall, Kazuo Minematsu, Carlos A Molina, Yongjun Wang, K S Lawrence Wong, S Claiborne Johnston
BACKGROUND AND PURPOSE: Ticagrelor is an effective antiplatelet therapy among patients with atherosclerotic disease and, therefore, could be more effective than aspirin in preventing recurrent stroke and cardiovascular events among patients with embolic stroke of unknown source (ESUS), which includes patients with ipsilateral stenosis <50% and aortic arch atherosclerosis. METHODS: We randomized 13 199 patients with a noncardioembolic, nonsevere ischemic stroke or high-risk transient ischemic attack to ticagrelor (180 mg loading dose on day 1 followed by 90 mg twice daily for days 2-90) or aspirin (300 mg on day 1 followed by 100 mg daily for days 2-90) within 24 hours of symptom onset...
July 18, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28716216/1-4-times-increase-in-atrial-fibrillation-related-ischemic-stroke-and-tia-over-12years-in-a-stroke-center
#12
Qiong Yang, Leonid Churilov, Dongsheng Fan, Stephen Davis, Bernard Yan
BACKGROUND AND PURPOSE: Prevalence of atrial fibrillation (AF) has quadrupled in the past 50years in the general population. However, there is uncertainty regarding prevalence of AF over time in ischemic stroke patients given the aging population and enhanced surveillance of AF. We aimed to explore the changing prevalence of AF as well as other risk factors, stroke subtypes, investigations and pre-stroke medications among ischemic stroke and transient ischemic attack (TIA) patients. METHODS: We performed a retrospective analysis of data from a prospective database of consecutive patients with acute ischemic stroke and TIA from 2004 to 2015...
August 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28716014/the-comprehensive-post-acute-stroke-services-compass-study-design-and-methods-for-a-cluster-randomized-pragmatic-trial
#13
Pamela W Duncan, Cheryl D Bushnell, Wayne D Rosamond, Sara B Jones Berkeley, Sabina B Gesell, Ralph B D'Agostino, Walter T Ambrosius, Blair Barton-Percival, Janet Prvu Bettger, Sylvia W Coleman, Doyle M Cummings, Janet K Freburger, Jacqueline Halladay, Anna M Johnson, Anna M Kucharska-Newton, Gladys Lundy-Lamm, Barbara J Lutz, Laurie H Mettam, Amy M Pastva, Mysha E Sissine, Betsy Vetter
BACKGROUND: Patients discharged home after stroke face significant challenges managing residual neurological deficits, secondary prevention, and pre-existing chronic conditions. Post-discharge care is often fragmented leading to increased healthcare costs, readmissions, and sub-optimal utilization of rehabilitation and community services. The COMprehensive Post-Acute Stroke Services (COMPASS) Study is an ongoing cluster-randomized pragmatic trial to assess the effectiveness of a comprehensive, evidence-based, post-acute care model on patient-centered outcomes...
July 17, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28715924/moyamoya-disease-in-children-results-from-the-international-pediatric-stroke-study
#14
Sarah Lee, Michael J Rivkin, Adam Kirton, Gabrielle deVeber, Jorina Elbers
This study aimed to describe children with moyamoya disease from an international multicenter stroke database, and explore risk factors for stroke recurrence. We reviewed data of children >28-days old with moyamoya disease enrolled in the International Pediatric Stroke Study from January 2003 to March 2013. A total of 174 children from 32 sites and 14 countries had moyamoya disease; median age 7.4 years, 49% male. Of these, 90% presented with ischemic stroke, 7.5% with transient ischemic attack, and 2.5% with hemorrhagic stroke...
January 1, 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28714328/neuronal-expression-of-the-mitochondrial-protein-prohibitin-confers-profound-neuroprotection-in-a-mouse-model-of-focal-cerebral-ischemia
#15
Anja Kahl, Corey J Anderson, Liping Qian, Henning Voss, Giovanni Manfredi, Costantino Iadecola, Ping Zhou
The mitochondrial protein prohibitin (PHB) has emerged as an important modulator of neuronal survival in different injury modalities . We previously showed that viral gene transfer of PHB protects CA1 neurons from delayed neurodegeneration following transient forebrain ischemia through mitochondrial mechanisms. However, since PHB is present in all cell types, it is not known if its selective expression in neurons is protective, and if the protection occurs also in acute focal ischemic brain injury, the most common stroke type in humans...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28713329/prevalence-incidence-prognosis-early-stroke-risk-and-stroke-related-prognostic-factors-of-definite-or-probable-transient-ischemic-attacks-in-china-2013
#16
Bin Jiang, Haixin Sun, Xiaojuan Ru, Dongling Sun, Zhenghong Chen, Hongmei Liu, Yichong Li, Mei Zhang, Limin Wang, Linhong Wang, Shengping Wu, Wenzhi Wang
The epidemiological characteristics of transient ischemic attacks (TIAs) in China are unclear. In 2013, we conducted a nationally representative, door-to-door epidemiological survey on TIA in China using a complex, multistage, probability sampling design. Results showed that the weighted prevalence of TIA in China was 103.3 [95% confidence interval (CI): 83.9-127.2] per 100,000 in the population, 92.4 (75.0-113.8) per 100,000 among men, and 114.7 (87.2-151.0) per 100,000 among women. The weighted incidence of TIA was 23...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28713087/clinical-factors-related-to-post-stroke-fatigue-within-the-first-3-month-after-acute-cerebrovascular-events
#17
Iryna I Delva, Mykhaylo Y Delva, Volodymyr A Poltorapavlov
INTRODUCTION: Post-stroke fatigue (PSF) is a common stroke complication with long-term negative consequences. AIM: Assess the rates of certain PSF domains within first 3 months after different acute cerebrovascular events (ACE) and identify clinical factors associated with each PSF domain. MATERIAL AND METHODS: There were examined 285 patients (195 with ischemic strokes, 39 with hemorrhagic strokes and 51 with transient ischemic attacks (TIA)) consequently at hospital stay, in 1 month and in 3 months after ACE...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28712815/asymptomatic-carotid-stenosis-is-associated-with-cognitive%C3%A2-impairment
#18
Brajesh K Lal, Moira C Dux, Siddhartha Sikdar, Carly Goldstein, Amir A Khan, John Yokemick, Limin Zhao
BACKGROUND: Cerebrovascular risk factors (eg, hypertension, coronary artery disease) and stroke can lead to vascular cognitive impairment. The Asymptomatic Carotid Stenosis and Cognitive Function study evaluated the isolated impact of asymptomatic carotid stenosis (no prior ipsilateral or contralateral stroke or transient ischemic attack) on cognitive function. Cerebrovascular hemodynamic and carotid plaque characteristics were analyzed to elucidate potential mechanisms affecting cognition...
July 13, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28711451/atrial-fibrillation-in-heart-failure-with-preserved-mid-range-and-reduced-ejection-fraction
#19
Ulrik Sartipy, Ulf Dahlström, Michael Fu, Lars H Lund
OBJECTIVES: The study sought to assess the independent risk factors for, consequences of, and outcomes with atrial fibrillation (AF) compared with sinus rhythm (SR) in heart failure (HF) with preserved ejection fraction (HFpEF) versus HF with mid-range ejection fraction (HFmrEF) versus HF with reduced ejection fraction (HFrEF). BACKGROUND: AF is common in HF, but most data are from HFrEF. The importance of AF in HFpEF and MFmrEF is less well known. METHODS: In patients from 2000 to 2012 in the SwedeHF (Swedish Heart Failure Registry) registry, enriched with patient-level data from national health care registries, the authors assessed prevalence of, associations with and prognostic impact of AF in HFpEF versus HFmrEF versus HFrEF...
July 6, 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/28710023/transient-brain-hypothermia-reduces-the-reperfusion-injury-of-delayed-tissue-plasminogen-activator-and-extends-its-therapeutic-time-window-in-a-focal-embolic-stroke-model
#20
Mohammadreza Zarisfi, Fatemeh Allahtavakoli, Mahsa Hassanipour, Mohammad Khaksari, Hossain Rezazadeh, Mohammad Allahtavakoli, Mohammad Mohsen Taghavi
It has been reported that restriction of reperfusion after thrombolytic therapy in ischemic stroke may reduce tissue plasminogen activator (tPA) adverse effects and extend its time window. We examined whether shortIt has been reported that restriction of reperfusion after thrombolytic therapy in ischemic stroke may reduce tissue plasminogen activator (tPA) adverse effects and extend its time window. We examined whether short-term and mild local brain cooling can prevent hyperemia and/or adverse effects of delayed tPA in rat embolic stroke model...
July 11, 2017: Brain Research Bulletin
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