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https://www.readbyqxmd.com/read/28630232/long-noncoding-rna-h19-promotes-neuroinflammation-in-ischemic-stroke-by-driving-histone-deacetylase-1-dependent-m1-microglial-polarization
#1
Jue Wang, Haiping Zhao, Zhibin Fan, Guangwen Li, Qingfeng Ma, Zhen Tao, Rongliang Wang, Juan Feng, Yumin Luo
BACKGROUND AND PURPOSE: Long noncoding RNA H19 is repressed after birth, but can be induced by hypoxia. We aim to investigate the impact on and underlying mechanism of H19 induction after ischemic stroke. METHODS: Circulating H19 levels in stroke patients and mice subjected to middle cerebral artery occlusion were assessed using real-time polymerase chain reaction. H19 siRNA and histone deacetylase 1 (HDAC1) plasmid were used to knock down H19 and overexpress HDAC1, respectively...
June 19, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28625126/enhanced-risk-for-specific-somatic-myeloproliferative-neoplastic-mutations-in-patients-with-stroke
#2
Chih-Cheng Chen, Chia-Chen Hsu, Cih-En Huang, Yi-Yang Chen, Jrhau Lung, Hsing-Ying Ho, Chian-Pei Li, Jiann-Der Lee
BACKGROUND: Somatic mutations of Janus kinase 2 (JAK2V617F), calreticulin (CALR), and myeloproliferative leukemia virus oncogene (MPL) are the major clonal molecules that drive the pathogenesis of myeloproliferative neoplasms (MPN). It is well recognized that MPN patients carry an excessive risk of thrombohemorrhagic complications. However, little is known about the prevalence of these clonal markers in patients with cerebral vascular disease. METHODS: To address this issue, 153 consecutive stroke patients in Taiwan were enrolled in the study...
June 18, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28615192/access-to-hyperacute-stroke-services-across-canadian-provinces-a-geospatial-analysis
#3
Prasanna Venkatesan Eswaradass, Richard H Swartz, Jamey Rosen, Michael D Hill, M Patrice Lindsay
BACKGROUND: Canada's vast geography creates challenges for ensuring prompt transport to hospital of patients who have had a stroke. We sought to determine the proportion of people across various Canadian provinces for whom hyperacute stroke services are accessible within evidence-based time targets. METHODS: We calculated, for the 8 provinces with available data, drive-time polygons on a map of Canada that delineated the area around stroke centres and emergency medical services (EMS) base centres to which one can drive in 3...
June 14, 2017: CMAJ Open
https://www.readbyqxmd.com/read/28597734/platelets-and-cardiovascular-risk
#4
Barbara Renga, Franco Scavizzi
Atherosclerosis and its late sequels are still the number one cause of death in Western societies. Platelets are a driving force not only during the genesis of atherosclerosis, but especially in its late stages, as evidenced by complications such as arterial thrombosis, myocardial infarction, and ischaemic stroke. Platelets are small, anucleate blood elements of critical importance in cardiovascular disease, a major cause of morbidity and mortality. Numerous risk scores exist to identify healthy individuals at increased risk of developing atherosclerosis and cardiovascular disease...
February 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28591739/improvement-of-mitochondrial-function-mediated-the-neuroprotective-effect-of-5-4-hydroxy-3-dimethoxybenzylidene-2-thioxo-4-thiazolidinone-in-rats-with-cerebral-ischemia-reperfusion-injuries
#5
Mingyang Wang, Lu Feng, Ji Zheng, Junya Liu, Shujie Fan, Jun Zhao, Nan Yang, Yanyong Liu, Zhanjun Yang, Caiying Ye, Pingping Zuo
Deficits in mitochondrial function is a critical inducement in the major pathways that drive neuronal cell death in ischemic process particularly. Drugs target to improve the mitochondrial function may be a feasible therapeutic choice in treatment with ischemic diseases. In the present study, we investigated whether 5-(4-hydroxy-3-dimethoxybenzylidene)-2-thioxo-4-thiazolidinone (RD-1), a compound derived from rhodanine, could protect against ischemic neuronal damage via improving mitochondrial function. We tested the neuroprotective effect of RD-1 both in rats modeled by middle cerebral artery occlusion reperfusion in vivo and in primary cortical neurons subjected to hypoxia/reperfusion injury in vitro...
May 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28587220/a-novel-real-time-path-servo-control-of-a-hardware-in-the-loop-for-a-large-stroke-asymmetric-rod-less-pneumatic-system-under-variable-loads
#6
Hao-Ting Lin
This project aims to develop a novel large stroke asymmetric pneumatic servo system of a hardware-in-the-loop for path tracking control under variable loads based on the MATLAB Simulink real-time system. High pressure compressed air provided by the air compressor is utilized for the pneumatic proportional servo valve to drive the large stroke asymmetric rod-less pneumatic actuator. Due to the pressure differences between two chambers, the pneumatic actuator will operate. The highly nonlinear mathematical models of the large stroke asymmetric pneumatic system were analyzed and developed...
June 4, 2017: Sensors
https://www.readbyqxmd.com/read/28574860/crouch-gait-can-be-an-effective-form-of-forced-use-no-constraint-exercise-for-the-paretic-lower-limb-in-stroke
#7
Luigi Tesio, Viviana Rota, Chiara Malloggi, Luigia Brugliera, Luigi Catino
In hemiplegic gait the paretic lower limb provides less muscle power and shows a briefer stance compared with the unaffected limb. Yet, a longer stance and a higher power can be obtained from the paretic lower limb if gait speed is increased. This supports the existence of a 'learned non-use' phenomenon, similar to that underlying some asymmetric impairments of the motion of the eyes and of the upper limbs. Crouch gait (CG) (bent-hip bent-knee, about 30° minimum knee flexion) might be an effective form of 'forced-use' treatment of the paretic lower limb...
June 1, 2017: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/28572917/mobilizing-for-a-war-on-the-home-front-against-sugar-related-morbidity-and-mortality
#8
Dean Schillinger, James G Kahn
In Israel today, there are 420,200 Israelis diagnosed with diabetes, and every year, Israelis sustain thousands of diabetes-related deaths and tens of thousands of diabetes-related amputations. As such, in Israel, as in much of the world, there is a silent and deadly public health war against obesity and diabetes taking place on the home front -- one in which clinicians, patients, and families fight thousands of life- and limb-threatening battles daily, involving preventable heart disease, diabetes, strokes and amputations...
2017: Israel Journal of Health Policy Research
https://www.readbyqxmd.com/read/28559646/assessing-cognitive-ability-and-simulator-based-driving-performance-in-poststroke-adults
#9
Alison Blane, Hoe C Lee, Torbjörn Falkmer, Tania Dukic Willstrand
Driving is an important activity of daily living, which is increasingly relied upon as the population ages. It has been well-established that cognitive processes decline following a stroke and these processes may influence driving performance. There is much debate on the use of off-road neurological assessments and driving simulators as tools to predict driving performance; however, the majority of research uses unlicensed poststroke drivers, making the comparability of poststroke adults to that of a control group difficult...
2017: Behavioural Neurology
https://www.readbyqxmd.com/read/28557368/a-strategic-framework-improves-access-to-stroke-reperfusion-across-the-state-of-victoria-australia
#10
Janet E Bray, Sonia Denisenko, Bruce C V Campbell, Michael Stephenson, Jason Muller, Grant Hocking Grad, Peter J Hand, Christopher F Bladin
BACKGROUND: In 2010, rapid access to stroke thrombolysis centres was limited in some regional areas in the Australian state of Victoria. These results, and in planning for Endovascular Clot Retrieval (ECR), have led to the implementation of strategies by the Victorian Stroke Clinical Network, the Victorian Stroke Telemedicine Program and local health services to improve state-wide access. AIMS: This study aims to examine whether access to stroke reperfusion services (thrombolysis and ECR) in regional Victoria have subsequently improved...
May 30, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28553217/electrocorticography-of-spatial-shifting-and-attentional-selection-in-human-superior-parietal-cortex
#11
Maarten Schrooten, Eshwar G Ghumare, Laura Seynaeve, Tom Theys, Patrick Dupont, Wim Van Paesschen, Rik Vandenberghe
Spatial-attentional reorienting and selection between competing stimuli are two distinct attentional processes of clinical and fundamental relevance. In the past, reorienting has been mainly associated with inferior parietal cortex. In a patient with a subdural grid covering the upper and lower bank of the left anterior and middle intraparietal sulcus (IPS) and the superior parietal lobule (SPL), we examined the involvement of superior parietal cortex using a hybrid spatial cueing paradigm identical to that previously applied in stroke and in healthy controls...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28547185/prognostic-value-of-eeg-microstates-in-acute-stroke
#12
Filippo Zappasodi, Pierpaolo Croce, Alessandro Giordani, Giovanni Assenza, Nadia M Giannantoni, Paolo Profice, Giuseppe Granata, Paolo M Rossini, Franca Tecchio
Given the importance of neuronal plasticity in recovery from a stroke and the huge variability of recovery abilities in patients, we investigated neuronal activity in the acute phase to enhance information about the prognosis of recovery in the stabilized phase. We investigated the microstates in 47 patients who suffered a first-ever mono-lesional ischemic stroke in the middle cerebral artery territory and in 20 healthy control volunteers. Electroencephalographic (EEG) activity at rest with eyes closed was acquired between 2 and 10 days (T0) after ischemic attack...
May 25, 2017: Brain Topography
https://www.readbyqxmd.com/read/28541902/complex-neuromuscular-changes-post-stroke-revealed-by-clustering-index-analysis-of-surface-electromyogram
#13
Xu Zhang, Zhongqing Wei, Xiaoting Ren, Xiaoping Gao, Xiang Chen, Ping Zhou
The objective of this study was to characterize complex neuromuscular changes induced by a hemisphere stroke through a novel clustering index (CI) analysis of surface electromyogram (EMG). The CI analysis was performed using surface EMG signals collected bilaterally from the thenar muscles of 17 subjects with stroke and 12 age-matched healthy controls during their performance of varying levels of isometric muscle contractions. Compared with the neurologically intact or contralateral muscles, mixed CI patterns were observed in the paretic muscles...
May 24, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28533085/return-to-drive-after-non-evolutive-brain-damage-french-recommendations
#14
REVIEW
Anne-Claire D'apolito, Jean-Luc Leguiet, Michel Enjalbert, Francis Lemoine, Jean-Michel Mazaux
Return to drive after brain damage is a crucial question either for patients than health professionals. The Société française de medicine physique et de réadaptation (SOFMER) and Comète France association developed recommandations for patient's identification, evaluation and accompaniment as part of their project to resume to drive. The place of rehabilitation process and patient's focus has been also discussed. AIMS: Using a literature review, the aim was to define clinical pathways to determine people who need a fitness to drive evaluation after a non-evolutive brain damage as well as the assessment process...
May 19, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28510599/selective-inhibition-of-brain-endothelial-rho-kinase-2-provides-optimal-protection-of-an-in-vitro-blood-brain-barrier-from-tissue-type-plasminogen-activator-and-plasmin
#15
Be'eri Niego, Natasha Lee, Pia Larsson, T Michael De Silva, Amanda E-Ling Au, Fiona McCutcheon, Robert L Medcalf
Rho-kinase (ROCK) inhibition, broadly utilised in cardiovascular disease, may protect the blood-brain barrier (BBB) during thrombolysis from rt-PA-induced damage. While the use of nonselective ROCK inhibitors like fasudil together with rt-PA may be hindered by possible hypotensive side-effects and inadequate capacity to block detrimental rt-PA activity in brain endothelial cells (BECs), selective ROCK-2 inhibition may overcome these limitations. Here, we examined ROCK-2 expression in major brain cells and compared the ability of fasudil and KD025, a selective ROCK-2 inhibitor, to attenuate rt-PA-induced BBB impairment in an in vitro human model...
2017: PloS One
https://www.readbyqxmd.com/read/28489816/endothelial-tlr4-and-the-microbiome-drive-cerebral-cavernous-malformations
#16
Alan T Tang, Jaesung P Choi, Jonathan J Kotzin, Yiqing Yang, Courtney C Hong, Nicholas Hobson, Romuald Girard, Hussein A Zeineddine, Rhonda Lightle, Thomas Moore, Ying Cao, Robert Shenkar, Mei Chen, Patricia Mericko, Jisheng Yang, Li Li, Ceylan Tanes, Dmytro Kobuley, Urmo Võsa, Kevin J Whitehead, Dean Y Li, Lude Franke, Blaine Hart, Markus Schwaninger, Jorge Henao-Mejia, Leslie Morrison, Helen Kim, Issam A Awad, Xiangjian Zheng, Mark L Kahn
Cerebral cavernous malformations (CCMs) are a cause of stroke and seizure for which no effective medical therapies yet exist. CCMs arise from the loss of an adaptor complex that negatively regulates MEKK3-KLF2/4 signalling in brain endothelial cells, but upstream activators of this disease pathway have yet to be identified. Here we identify endothelial Toll-like receptor 4 (TLR4) and the gut microbiome as critical stimulants of CCM formation. Activation of TLR4 by Gram-negative bacteria or lipopolysaccharide accelerates CCM formation, and genetic or pharmacologic blockade of TLR4 signalling prevents CCM formation in mice...
May 10, 2017: Nature
https://www.readbyqxmd.com/read/28478980/use-of-geospatial-modeling-to-evaluate-the-impact-of-telestroke-on-access-to-stroke-thrombolysis-in-ontario
#17
Lauren Jewett, Ario Mirian, Ben Connolly, Frank L Silver, Demetrios J Sahlas
BACKGROUND: The treatment of acute ischemic stroke in Ontario is coordinated through a network of stroke centers, supplemented by emergency telemedicine consultations to nonstroke centers through the Ontario Telemedicine Network's province-wide Telestroke program. Using geoinformatics, we sought to evaluate the overall impact of Telestroke on access to stroke thrombolysis in Ontario. METHODS: Ontario population data (census) were used to overlay polygons created by Service Area Analysis using ArcGIS 10...
May 3, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28475606/shaping-innovations-in-long-term-care-for-stroke-survivors-with-multimorbidity-through-stakeholder-engagement
#18
Euan Sadler, Talya Porat, Iain Marshall, Uy Hoang, Vasa Curcin, Charles D A Wolfe, Christopher McKevitt
BACKGROUND: Stroke, like many long-term conditions, tends to be managed in isolation of its associated risk factors and multimorbidity. With increasing access to clinical and research data there is the potential to combine data from a variety of sources to inform interventions to improve healthcare. A 'Learning Health System' (LHS) is an innovative model of care which transforms integrated data into knowledge to improve healthcare. The objective of this study is to develop a process of engaging stakeholders in the use of clinical and research data to co-produce potential solutions, informed by a LHS, to improve long-term care for stroke survivors with multimorbidity...
2017: PloS One
https://www.readbyqxmd.com/read/28475487/can-somatosensory-electrical-stimulation-relieve-spasticity-in-post-stroke-patients-a-tms-pilot-study
#19
André Salles Cunha Peres, Victor Hugo Souza, João Marcos Yamasaki Catunda, Kelley Cristine Mazzeto-Betti, Taiza Elaine Grespan Santos-Pontelli, Claudia Domingues Vargas, Oswaldo Baffa, Draulio Barros de Araújo, Octávio Marques Pontes-Neto, João Pereira Leite, Marco Antonio Cavalcanti Garcia
Evidence suggests that somatosensory electrical stimulation (SES) may decrease the degree of spasticity from neural drives, although there is no agreement between corticospinal modulation and the level of spasticity. Thus, stroke patients and healthy subjects were submitted to SES (3 Hz) for 30' on the impaired and dominant forearms, respectively. Motor evoked potentials induced by single-pulse transcranial magnetic stimulation were collected from two forearm muscles before and after SES. The passive resistance of the wrist joint was measured with an isokinetic system...
May 5, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28473445/estrogen-receptor-control-of-atherosclerotic-calcification-and-smooth-muscle-cell-osteogenic-differentiation
#20
Lucinda S McRobb, Kristine C Y McGrath, Tania Tsatralis, Eleanore C Liong, Joanne T M Tan, Gillian Hughes, David J Handelsman, Alison K Heather
OBJECTIVE: Vascular calcification is associated with increased risk of myocardial infarction and stroke. The objective of this work was to examine the ability of 17β-estradiol (E2) to stimulate calcification of vascular smooth muscle cells (VSMC) in vivo, using aged apolipoprotein E-null mice with advanced atherosclerotic lesions, and subsequently to explore underlying mechanisms in vitro. APPROACH AND RESULTS: Silastic E2 capsules were implanted into male and female apolipoprotein E-null mice aged 34 weeks...
June 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
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