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Translational stroke

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https://www.readbyqxmd.com/read/29052510/validity-and-reliability-of-a-nigerian-yoruba-version-of-the-stroke-specific-quality-of-life-scale-2-0
#1
Marufat Oluyemisi Odetunde, Aderonke Omobonike Akinpelu, Adesola Christiana Odole
BACKGROUND: Psychometric evidence is necessary to establish scientific integrity and clinical usefulness of translations and cultural adaptations of the Stroke-Specific Quality of Life (SS-QoL) scale. However, the limited evidence on psychometrics of Yoruba version of SS-QoL 2.0 (SS-QoL(Y)) is a significant shortcoming. This study assessed the test-retest reliability, internal consistency, convergent, divergent, discriminant and known-group validity of the SS-QoL(Y). METHODS: Yoruba version of the WHOQoL-BREF was used to test the convergent and divergent validity of the SS-QoL(Y) among 100 consenting stroke survivors...
October 19, 2017: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/29049353/should-preventive-antibiotics-be-used-in-patients-with-acute-stroke-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#2
Feng Zheng, Niklas von Spreckelsen, Xintong Zhang, Pantelis Stavrinou, Marco Timmer, Christian Dohmen, Roland Goldbrunner, Fang Cao, Qiang Zhang, Qishan Ran, Gang Li, Ruiming Fan, Shengtao Yao, Boris Krischek
BACKGROUND: Infection is a common complication in acute stroke. Whether or not preventive antibiotics reduce the risk of infection or even lead to a favorable outcome and reduction of mortality after a stroke still remains equivocal. This review was performed to update the current knowledge on the effect and possible benefits of prophylactic antibiotic therapy in patients with stroke. METHODS: A systematic review and meta-analysis of preventive antibiotics`effect on the incidence of infection, favorable outcome (mRS≤2) and mortality in patients with acute stroke is performed with relevant randomized controlled trials...
2017: PloS One
https://www.readbyqxmd.com/read/29042191/roadmap-to-achieve-25-hypertension-control-in-africa-by-2025
#3
Anastase Dzudie, Brian Rayner, Dike Ojji, Aletta E Schutte, Marc Twagirumukiza, Albertino Damasceno, Seringe Abdou Ba, Abdoul Kane, Euloge Kramoh, Jean Baptiste Anzouan Kacou, Basden Onwubere, Ruth Cornick, Karen Sliwa, Benedict Anisiuba, Ana Olga Mocumbi, Elijah Ogola, Mohamed Awad, George Nel, Harun Otieno, Ali Ibrahim Toure, Samuel Kingue, Andre Pascal Kengne, Pablo Perel, Alma Adler, Neil Poulter, Bongani Mayosi
BACKGROUND: The Pan-African Society of Cardiology (PASCAR) has identified hypertension as the highest area of priority action to reduce heart disease and stroke on the continent. OBJECTIVES: The aim of this PASCAR roadmap on hypertension was to develop practical guidance on how to implement strategies that translate existing knowledge into effective action and improve detection, treatment and control of hypertension and cardiovascular health in sub-Saharan Africa (SSA) by the year 2025...
October 14, 2017: Global Heart
https://www.readbyqxmd.com/read/29040224/fes-assisted-cycling-improves-aerobic-capacity-and-locomotor-function-post-cva
#4
Stacey E Aaron, Catherine J VanDerwerker, Aaron E Embry, Jennifer H Newton, Samuel C K Lee, Chris M Gregory
PURPOSE: After a cerebrovascular accident (CVA) aerobic deconditioning contributes to diminished physical function. Functional Electrical Stimulation (FES)-assisted cycling is a promising exercise paradigm designed to target both aerobic capacity and locomotor function. This pilot study aimed to evaluate the effects of an FES-assisted cycling intervention on aerobic capacity and locomotor function in individuals post-CVA. METHODS: Eleven individuals with chronic (> 6 months) post-CVA hemiparesis completed an 8-week (3x/wk; 24 sessions) progressive FES-assisted cycling intervention...
October 16, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29037463/in-vivo-bone-strain-and-finite-element-modeling-of-a-rhesus-macaque-mandible-during-mastication
#5
Olga Panagiotopoulou, José Iriarte-Diaz, Simon Wilshin, Paul C Dechow, Andrea B Taylor, Hyab Mehari Abraha, Sharifah F Aljunid, Callum F Ross
Finite element analysis (FEA) is a commonly used tool in musculoskeletal biomechanics and vertebrate paleontology. The accuracy and precision of finite element models (FEMs) are reliant on accurate data on bone geometry, muscle forces, boundary conditions and tissue material properties. Simplified modeling assumptions, due to lack of in vivo experimental data on material properties and muscle activation patterns, may introduce analytical errors in analyses where quantitative accuracy is critical for obtaining rigorous results...
September 1, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29030880/direct-saturation-corrected-chemical-exchange-saturation-transfer-mri-of-glioma-simplified-decoupling-of-amide-proton-transfer-and-nuclear-overhauser-effect-contrasts
#6
Iris Yuwen Zhou, Enfeng Wang, Jerry S Cheung, Dongshuang Lu, Yang Ji, Xiaoan Zhang, Giulia Fulci, Phillip Zhe Sun
PURPOSE: Chemical exchange saturation transfer (CEST) MRI has shown promise in tissue characterization in diseases like stroke and tumor. However, in vivo CEST imaging such as amide proton transfer (APT) MRI is challenging because of concomitant factors such as direct water saturation, macromolecular magnetization transfer, and nuclear overhauser effect (NOE), which lead to a complex contrast in the commonly used asymmetry analysis (MTRasym). Here, we propose a direct saturation-corrected CEST (DISC-CEST) analysis for simplified decoupling and quantification of in vivo CEST effects...
October 13, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29027964/microglia-and-monocytes-macrophages-polarization-reveal-novel-therapeutic-mechanism-against-stroke
#7
REVIEW
Masato Kanazawa, Itaru Ninomiya, Masahiro Hatakeyama, Tetsuya Takahashi, Takayoshi Shimohata
Stroke is a leading cause of morbidity and mortality worldwide, and consists of two types, ischemic and hemorrhagic. Currently, there is no effective treatment to increase the survival rate or improve the quality of life after ischemic and hemorrhagic stroke in the subacute to chronic phases. Therefore, it is necessary to establish therapeutic strategies to facilitate functional recovery in patients with stroke during both phases. Cell-based therapies, using microglia and monocytes/macrophages preconditioned by optimal stimuli and/or any therapies targeting these cells, might be an ideal therapeutic strategy for managing stroke...
October 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29018134/neuronal-sirt1-silent-information-regulator-2-homologue-1-regulates-glycolysis-and-mediates-resveratrol-induced-ischemic-tolerance
#8
Kevin B Koronowski, Nathalie Khoury, Isabel Saul, Zachary B Loris, Charles H Cohan, Holly M Stradecki-Cohan, Kunjan R Dave, Juan I Young, Miguel A Perez-Pinzon
BACKGROUND AND PURPOSE: Resveratrol, at least in part via SIRT1 (silent information regulator 2 homologue 1) activation, protects against cerebral ischemia when administered 2 days before injury. However, it remains unclear if SIRT1 activation must occur, and in which brain cell types, for the induction of neuroprotection. We hypothesized that neuronal SIRT1 is essential for resveratrol-induced ischemic tolerance and sought to characterize the metabolic pathways regulated by neuronal Sirt1 at the cellular level in the brain...
October 10, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28987764/comparing-the-effects-of-adapting-to-a-weight-on-one-leg-during-treadmill-and-overground-walking-a-pilot-study
#9
Gabriela Lopes Gama, Douglas N Savin, Taylor Keenan, Sandy McCombe Waller, Jill Whitall
BACKGROUND: Locomotor adaptation has been suggested as a way to improve gait symmetry in individuals post-stroke. Most perturbation methods utilize costly, specialized equipment. The use of a unilateral leg weight may provide a low cost, clinically translatable alternative. Furthermore, previous studies have suggested that adaptation context may affect movement outcomes. The purpose of this study was to assess the ability of a unilaterally applied ankle weight to drive locomotor adaptation and determine the effect of context (treadmill versus overground) in young, non-disabled participants...
September 23, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28985200/cellular-therapy-for-traumatic-neurological-injury
#10
REVIEW
Charles S Cox
Neurological injury is the primary lethal mechanism of injury in children, and the primary etiology of long-term disability after trauma. Laboratories and clinical/translational teams have sought to develop stem/progenitor cell therapies to improve recovery in a clinical setting in which there is no significant reparative option. While none of these treatments are currently standard therapeutics, Phase 2b clinical trials are underway in both adults and children in severe traumatic brain injury and Phase 1/2a trials in spinal cord injury...
October 6, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28982677/inhibiting-histone-deacetylase-2-hdac2-promotes-functional-recovery-from-stroke
#11
Ying Tang, Yu-Hui Lin, Huan-Yu Ni, Jian Dong, Hong-Jin Yuan, Yu Zhang, Hai-Ying Liang, Meng-Cheng Yao, Qi-Gang Zhou, Hai-Yin Wu, Lei Chang, Chun-Xia Luo, Dong-Ya Zhu
BACKGROUND: Stroke is a leading cause of long-term disability worldwide. However, current therapies that promote functional recovery from stroke are limited to physical rehabilitation. No pharmacological therapy is available. Thus, understanding the role of histone deacetylase 2 (HDAC2) in the pathophysiological process of stroke-induced functional loss may provide a novel strategy for stroke recovery. METHODS AND RESULTS: Focal stroke was induced by photothrombosis...
October 5, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28982595/transgenic-expression-of-hur-increases-vasogenic-edema-and-impedes-functional-recovery-in-rodent-ischemic-stroke
#12
Agnieszka A Ardelt, Randall S Carpenter, Ifeanyi Iwuchukwu, An Zhang, William Lin, Ewa Kosciuczuk, Cyrus Hinkson, Tania Rebeiz, Sydney Reitz, Peter H King
BACKGROUND AND PURPOSE: Ischemic stroke produces significant morbidity and mortality, and acute interventions are limited by short therapeutic windows. Novel approaches to neuroprotection and neurorepair are necessary. HuR is an RNA-binding protein (RBP) which modulates RNA stability and translational efficiency of genes linked to ischemic stroke injury. METHODS: Using a transgenic (Tg) mouse model, we examined the impact of ectopic HuR expression in astrocytes on acute injury evolution after transient middle cerebral artery occlusion (tMCAO)...
October 2, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28973174/low-dose-vs-standard-dose-alteplase-for-patients-with-acute-ischemic-stroke-secondary-analysis-of-the-enchanted-randomized-clinical-trial
#13
Xia Wang, Thompson G Robinson, Tsong-Hai Lee, Qiang Li, Hisatomi Arima, Philip M Bath, Laurent Billot, Joseph Broderick, Andrew M Demchuk, Geoffrey Donnan, Jong S Kim, Pablo Lavados, Richard I Lindley, Sheila O Martins, Veronica V Olavarria, Jeyaraj D Pandian, Mark W Parsons, Octavio M Pontes-Neto, Stefano Ricci, Vijay K Sharma, Nguyen H Thang, Ji-Guang Wang, Mark Woodward, Craig S Anderson, John Chalmers
Importance: A lower dose of intravenous alteplase appears to be a safer treatment option than the standard dose, reducing the risk of symptomatic intracerebral hemorrhage. There is uncertainty, however, over how this effect translates into an overall clinical benefit for patients with acute ischemic stroke (AIS). Objective: To assess whether older, Asian, or severely affected patients with AIS who are considered at high risk of thrombolysis may benefit more from low-dose rather than standard-dose alteplase treatment...
October 2, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28973171/defective-mitochondrial-rrna-methyltransferase-mrm2-causes-melas-like-clinical-syndrome
#14
Caterina Garone, Aaron R D'Souza, Cristina Dallabona, Tiziana Lodi, Pedro Rebelo-Guiomar, Joanna Rorbach, Maria Alice Donati, Elena Procopio, Martino Montomoli, Renzo Guerrini, Massimo Zeviani, Sarah E Calvo, Vamsi K Mootha, Salvatore DiMauro, Ileana Ferrero, Michal Minczuk
Defects in nuclear-encoded proteins of the mitochondrial translation machinery cause early-onset and tissue-specific deficiency of one or more OXPHOS complexes. Here, we report a 7-year-old Italian boy with childhood-onset rapidly progressive encephalomyopathy and stroke-like episodes. Multiple OXPHOS defects and decreased mtDNA copy number (40%) were detected in muscle homogenate. Clinical features combined with low level of plasma citrulline were highly suggestive of mitochondrial encephalopathy, lactic acidosis and stroke-like episodes (MELAS) syndrome, however, the common m...
August 25, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28967592/the-longer-term-unmet-needs-after-stroke-questionnaire-cross-cultural-adaptation-reliability-and-concurrent-validity-in-a-dutch-population
#15
Iris Groeneveld, Henk Arwert, Paulien Goossens, Thea Vliet Vlieland
BACKGROUND: Unmet needs are common after stroke. We aimed to translate the 22-item Longer-term Unmet Needs after Stroke (LUNS) Questionnaire and validate it in a Dutch stroke population. METHODS: The LUNS was translated and cross-culturally adapted according to international guidelines. After field testing, the Dutch version was administered twice to a hospital-based cohort 5-8 years after stroke. Participants were also asked to complete the Frenchay Activity Index (FAI) and Short Form (SF)-12...
September 26, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28963367/trevo-stent-retriever-mechanical-thrombectomy-for-acute-ischemic-stroke-secondary-to-large-vessel-occlusion-registry
#16
Osama O Zaidat, Alicia C Castonguay, Raul G Nogueira, Diogo C Haussen, Joey D English, Sudhakar R Satti, Jennifer Chen, Hamed Farid, Candace Borders, Erol Veznedaroglu, Mandy J Binning, Ajit Puri, Nirav A Vora, Ron F Budzik, Guilherme Dabus, Italo Linfante, Vallabh Janardhan, Amer Alshekhlee, Michael G Abraham, Randall Edgell, Muhammad Asif Taqi, Ramy El Khoury, Maxim Mokin, Aniel Q Majjhoo, Mouhammed R Kabbani, Michael T Froehler, Ira Finch, Sameer A Ansari, Roberta Novakovic, Thanh N Nguyen
BACKGROUND: Recent randomized clinical trials (RCTs) demonstrated the efficacy of mechanical thrombectomy using stent-retrievers in patients with acute ischemic stroke (AIS) with large vessel occlusions; however, it remains unclear if these results translate to a real-world setting. The TREVO Stent-Retriever Acute Stroke (TRACK) multicenter Registry aimed to evaluate the use of the Trevo device in everyday clinical practice. METHODS: Twenty-three centers enrolled consecutive AIS patients treated from March 2013 through August 2015 with the Trevo device...
September 29, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28963120/chronic-cerebral-hypoperfusion-a-key-mechanism-leading-to-vascular-cognitive-impairment-and-dementia-closing-the-translational-gap-between-rodent-models-and-human-vascular-cognitive-impairment-and-dementia
#17
REVIEW
Jessica Duncombe, Akihiro Kitamura, Yoshiki Hase, Masafumi Ihara, Raj N Kalaria, Karen Horsburgh
Increasing evidence suggests that vascular risk factors contribute to neurodegeneration, cognitive impairment and dementia. While there is considerable overlap between features of vascular cognitive impairment and dementia (VCID) and Alzheimer's disease (AD), it appears that cerebral hypoperfusion is the common underlying pathophysiological mechanism which is a major contributor to cognitive decline and degenerative processes leading to dementia. Sustained cerebral hypoperfusion is suggested to be the cause of white matter attenuation, a key feature common to both AD and dementia associated with cerebral small vessel disease (SVD)...
October 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28955382/atrial-fibrillation-in-heart-failure-a-therapeutic-challenge-of-our-times
#18
REVIEW
Syeda Atiqa Batul, Rakesh Gopinathannair
Atrial fibrillation (AF) and heart failure (HF) are growing cardiovascular disease epidemics worldwide. There has been an exponential increase in the prevalence of AF and HF correlating with an increased burden of cardiac risk factors and improved survival rates in patients with structural heart disease. AF is associated with adverse prognostic outcomes in HF and is most evident in mild-to-moderate left ventricular (LV) dysfunction where the loss of "atrial kick" translates into poorer quality of life and increased mortality...
September 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28952904/improved-functional-outcome-after-chronic-stroke-with-delayed-anti-nogo-a-therapy-a-clinically-relevant-intention-to-treat-analysis
#19
Katherine M Podraza, Yasmin Mehta, Vicki A Husak, Elise Lippmann, Timothy E O'Brien, Gwendolyn L Kartje, Shih-Yen Tsai
Many preclinical treatment strategies for stroke have failed when tested in human trials. Although the reasons for these translation failures are multifactorial, one potential concern is the statistical analysis of the preclinical data. One way to rigorously evaluate new therapies is to use an intention-to-treat analysis in preclinical studies. Therefore, in this study, we set out to evaluate the treatment efficacy of a potential clinically relevant therapeutic agent for stroke, i.e., anti-Nogo-A immunotherapy, using an intention-to-treat analysis...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28951288/on-or-off-pump-coronary-artery-bypass-grafting-for-octogenarians-a%C3%A2-meta-analysis-of-comparative-studies-involving-27-623-patients
#20
REVIEW
Habib Khan, Mohsin Uzzaman, Umberto Benedetto, Salman Butt, Shahzad G Raja
OBJECTIVE: Coronary artery bypass grafting (CABG) is being increasingly offered to octogenarians. Both on- and off-pump CABG are reported as effective surgical revascularization strategies for octogenarians by single institution studies. However, the issue of superiority of one strategy over the other for octogenarians remains unresolved due to limited sample size of these studies. A meta-analysis of studies comparing outcomes of on- and off-pump CABG in octogenarians was undertaken to address the issue...
September 22, 2017: International Journal of Surgery
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