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Stroke AND driving

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https://www.readbyqxmd.com/read/29230011/pairing-sound-with-vagus-nerve-stimulation-modulates-cortical-synchrony-and-phase-coherence-in-tinnitus-an-exploratory-retrospective-study
#1
Sven Vanneste, Jeffrey Martin, Robert L Rennaker, Michael P Kilgard
Recent research has shown that vagus nerve stimulation (VNS) paired with tones or with rehabilitative training can help patients to achieve reductions in tinnitus perception or to expedite motor rehabilitation after suffering an ischemic stroke. The rationale behind this treatment is that VNS paired with experience can drive neural plasticity in a controlled and therapeutic direction. Since previous studies observed that gamma activity in the auditory cortex is correlated with tinnitus loudness, we assessed resting-state source-localized EEG before and after one to three months of VNS-tone pairing in chronic tinnitus patients...
December 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29223708/comparison-of-neuroplastic-responses-to-cathodal-transcranial-direct-current-stimulation-and-continuous-theta-burst-stimulation-in-subacute-stroke
#2
Pierre Nicolo, Cécile Magnin, Elena Pedrazzini, Gijs Plomp, Anaïs Mottaz, Armin Schnider, Adrian G Guggisberg
OBJECTIVE: To investigate the effects of cathodal transcranial direct current stimulation (tDCS) and continuous theta burst stimulation (cTBS) on neural network connectivity and motor recovery in individuals with subacute stroke. DESIGN: Double-blinded, randomized, placebo-controlled study. SETTING: Stroke subjects recruited through a university hospital rehabilitation program. PARTICIPANTS: Stroke inpatients (N=41; mean age 65y, range 28-85; mean weeks poststroke 5, range 2-10) with resultant paresis in the upper extremity (mean Fugl-Meyer score 14, range 3-48)...
December 6, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29223103/bilateral-early-activity-in-the-hip-flexors-associated-with-falls-in-stroke-survivors-preliminary-evidence-from-laboratory-induced-falls
#3
Dmitrijs Celinskis, Mark D Grabiner, Claire F Honeycutt
OBJECTIVE: Falls are the most common and expensive medical complication following stroke. Hypermetric reflexes have been suggested to impact post-stroke balance but no study has evaluated reflex amplitudes under real conditions of falls in this population. Our objective was to quantify the early reflexive responses during falls induced in the laboratory. METHODS: Sixteen stroke survivors were exposed to posteriorly directed treadmill perturbations that required a forward step to maintain a balance...
November 21, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29222948/force-coordination-strategies-in-on-water-single-sculling-are-asymmetries-related-to-better-rowing-performance
#4
John Warmenhoven, Richard Smith, Conny Draper, Andrew Harrison, Norma Bargary, Stephen Cobley
Asymmetries of the rowing stroke cycle have been assessed with reference to kinematics and foot-force measures in laboratory testing environments. It remains unclear how asymmetries in propulsive kinetic measures are related to on-water rowing performance. A new approach for the evaluation of both global and local asymmetries across the entire movement was used to assess the continuous role of asymmetries and whether these change according to level of competitive representation. Twenty seven highly skilled female rowers (national and international competition level), rowing at 32 strokes per minute in a single scull boat were evaluated...
December 9, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29211879/cross-country-comparisons-of-disability-and-morbidity-evidence-from-the-gateway-to-global-aging-data
#5
Jinkook Lee, Drystan Phillips, Jenny Wilkens, Sandy Chien, Yu-Chen Lin, Marco Angrisani, Eileen Crimmins, Anne Newman
Background: International comparisons of disease prevalence have been useful in understanding what proportion of disease might be preventable and in informing potential policy interventions in different cultural and economic contexts. Using newly available, harmonized data from 20 countries, we compare disability and morbidity of older adults between the ages of 55 and 74. Methods: The Gateway to Global Aging Data, a data and information portal, provides access to easy-to-use individual-level longitudinal data from 10 surveys covering over 30 countries...
December 4, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29205357/hexokinase-2-dependent-hyperglycolysis-driving-microglial-activation-contributes-to-ischemic-brain-injury
#6
Yuan Li, Bingzheng Lu, Longxiang Sheng, Zhu Zhu, Hongjiaqi Sun, Yuwei Zhou, Yang Yang, Dongdong Xue, Wenli Chen, Xuyan Tian, Yun Du, Min Yan, Wenbo Zhu, Fan Xing, Kai Li, Suizhen Lin, Pengxin Qiu, Xingwen Su, Yijun Huang, Guangmei Yan, Wei Yin
Hyperglycolysis, observed within the penumbra zone during brain ischemia, was shown to be detrimental for tissue survival due to lactate accumulation and reactive oxygen species (ROS) overproduction in clinical and experimental settings. Recently, mounting evidence suggests that glycolytic reprogramming and induced metabolic enzymes can fuel the activation of peripheral immune cells. However, the possible roles and details regarding hyperglycolysis in neuroinflammation during ischemia are relatively poorly understood...
December 5, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29191982/case-studies-in-physiology-exercise-induced-diaphragm-fatigue-in-a-paralympic-champion-rower-with-spinal-cord-injury
#7
Nicholas B Tiller, Thomas R Aggar, Christopher R West, Lee M Romer
INTRODUCTION: The aim of this case report was to determine whether maximal upper-body exercise was sufficient to induce diaphragm fatigue in a Paralympic champion adaptive rower with low-lesion spinal cord injury (SCI). CASE PRESENTATION: An elite arms-only oarsman (age 28 y, stature 1.89 m, mass 90.4 kg) with motor-complete SCI (T12) performed a 1000 m time-trial on an adapted rowing ergometer. Exercise measurements comprised pulmonary ventilation and gas exchange, diaphragm EMG-derived indices of neural respiratory drive and intrathoracic pressure-derived indices of respiratory mechanics...
November 30, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29176945/sound-evoked-biceps-myogenic-potentials-reflect-asymmetric-vestibular-drive-to-spastic-muscles-in-chronic-hemiparetic-stroke-survivors
#8
Derek M Miller, William Z Rymer
Aberrant vestibular nuclear function is proposed to be a principle driver of limb muscle spasticity after stroke. We sought to determine whether altered cortical modulation of descending vestibulospinal pathways post-stroke could impact the excitability of biceps brachii motoneurons. Twelve chronic hemispheric stroke survivors aged 46-68 years were enrolled. Sound evoked biceps myogenic potentials (SEBMPs) were recorded from the spastic and contralateral biceps muscles using surface EMG electrodes. We assessed the impact of descending vestibulospinal pathways on biceps muscle activity and evaluated the relationship between vestibular function and the severity of spasticity...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29157263/ldl-receptor-blockade-reduces-mortality-in-a-mouse-model-of-ischaemic-stroke-without-improving-tissue-type-plasminogen-activator-induced-brain-haemorrhage-towards-pre-clinical-simulation-of-symptomatic-ich
#9
Be'eri Niego, Brad R S Broughton, Heidi Ho, Christopher G Sobey, Robert L Medcalf
BACKGROUND: Symptomatic intracerebral haemorrhage (sICH) following tissue-type plasminogen activator (rt-PA) administration is the most feared and lethal complication of thrombolytic therapy for ischaemic stroke, creating a significant obstacle for a broader uptake of this beneficial treatment. rt-PA also undermines cerebral vasculature stability in a multimodal process which involves engagement with LDL receptor-related protein 1 (LRP-1), potentially underlying the development of sICH...
November 21, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/29141890/british-thoracic-society-clinical-statement-on-pulmonary-arteriovenous-malformations
#10
Claire L Shovlin, Robin Condliffe, James W Donaldson, David G Kiely, Stephen J Wort
Pulmonary arteriovenous malformations (PAVMs) are structurally abnormal vascular communications that provide a continuous right-to-left shunt between pulmonary arteries and veins. Their importance stems from the risks they pose (>1 in 4 patients will have a paradoxical embolic stroke, abscess or myocardial infarction while life-threatening haemorrhage affects 1 in 100 women in pregnancy), opportunities for risk prevention, surprisingly high prevalence and under-appreciation, thus representing a challenging condition for practising healthcare professionals...
December 2017: Thorax
https://www.readbyqxmd.com/read/29136153/reverse-ncx-attenuates-cellular-sodium-loading-in-metabolically-compromised-cortex
#11
Niklas J Gerkau, Cordula Rakers, Simone Durry, Gabor C Petzold, Christine R Rose
In core regions of ischemic stroke, disruption of blood flow causes breakdown of ionic gradients and, ultimately, calcium overload and cell death. In the surrounding penumbra, cells may recover upon reperfusion, but recovery is hampered by additional metabolic demands imposed by peri-infarct depolarizations (PIDs). There is evidence that sodium influx drives PIDs, but no data exist on PID-related sodium accumulations in vivo. Here, we found that PIDs in mouse neocortex are associated with propagating sodium elevations in neurons and astrocytes...
November 9, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29114092/inhibition-of-cd147-cluster-of-differentiation-147-ameliorates-acute-ischemic-stroke-in-mice-by-reducing-thromboinflammation
#12
Rong Jin, Adam Y Xiao, Rui Chen, D Neil Granger, Guohong Li
BACKGROUND AND PURPOSE: Inflammation and thrombosis currently are recognized as critical contributors to the pathogenesis of ischemic stroke. CD147 (cluster of differentiation 147), also known as extracellular matrix metalloproteinase inducer, can function as a key mediator of inflammatory and immune responses. CD147 expression is increased in the brain after cerebral ischemia, but its role in the pathogenesis of ischemic stroke remains unknown. In this study, we show that CD147 acts as a key player in ischemic stroke by driving thrombotic and inflammatory responses...
November 7, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29097060/cortisol-is-more-important-than-metanephrines-in-driving-changes-in-leukocyte-counts-after-stroke
#13
Dannielle Zierath, Patricia Tanzi, Dean Shibata, Kyra J Becker
BACKGROUND: There are notable changes in the number of white blood cells (WBCs) after stroke, but the primary mediators of these changes are unclear. In this study, we assessed the role of the neuroendocrine and sympathetic nervous systems in stroke-induced changes of WBCs within distinct leukocyte subsets, as well as the effect of these changes on stroke outcomes. METHODS: Patients were recruited within 72 hours after ischemic stroke; complete blood count with differential was obtained at set time points...
October 30, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29082864/fitness-to-drive-in-cardiovascular-disease
#14
Hermann H Klein, Udo Sechtem, Hans-Joachim Trappe
BACKGROUND: Medical students are taught little or nothing about the medical considerations related to the driving of motor vehicles. Physicians treating patients with cardiovascular disease need to acquire competence in traffic medicine in order to be able to advise them about their fitness to drive. METHODS: We present the current governmental regulations and recommendations concerning fitness to drive in patients with cardiovascular disease. We also review pertinent publications that were retrieved by a selective search in PubMed with the search terms "cardiovascular disease and traffic accidents" and "cardiovascular disease and traffic deaths" for the decade 2007-2016, as well as further publications collected by us individually...
October 13, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/29072545/comparison-of-seating-powered-characteristics-and-functions-and-costs-of-electrically-powered-wheelchairs-in-a-general-population-of-users
#15
Michael John Dolan, Megan Jennifer Bolton, Graham Iain Henderson
PURPOSE: To profile and compare the seating and powered characteristics and functions of electrically powered wheelchairs (EPWs) in a general user population including equipment costs. METHOD: Case notes of adult EPW users of a regional NHS service were reviewed retrospectively. Seating equipment complexity and type were categorized using the Edinburgh classification. Powered characteristics and functions, including control device type, were recorded. RESULTS: 482 cases were included; 53...
October 26, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29071420/venous-pressures-and-cardiac-filling-in-turtles-during-apnoea-and-intermittent-ventilation
#16
William Joyce, Catherine J A Williams, Dane A Crossley, Tobias Wang
The amount of blood pumped by the heart (cardiac output) must be matched to the amount of blood returning to the heart (venous return), but the factors determining cardiac filling are sparsely understood in ectothermic vertebrates. Stroke volume is affected by heart rate along with central and peripheral venous pressures. In the present study, we investigated the heart rate dependency of cardiac filling in turtles, along with the changes in venous pressures that accompany ventilation. Experimental reductions in heart rate of anaesthetised turtles (Trachemys scripta) by the specific bradycardic agent zatebradine (2-3 mg kg(-1)) resulted in an elevation of stroke volume that compensated cardiac output...
October 25, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/29058612/skeletal-muscle-mechanics-energetics-and-plasticity
#17
REVIEW
Richard L Lieber, Thomas J Roberts, Silvia S Blemker, Sabrina S M Lee, Walter Herzog
The following papers by Richard Lieber (Skeletal Muscle as an Actuator), Thomas Roberts (Elastic Mechanisms and Muscle Function), Silvia Blemker (Skeletal Muscle has a Mind of its Own: a Computational Framework to Model the Complex Process of Muscle Adaptation) and Sabrina Lee (Muscle Properties of Spastic Muscle (Stroke and CP) are summaries of their representative contributions for the session on skeletal muscle mechanics, energetics and plasticity at the 2016 Biomechanics and Neural Control of Movement Conference (BANCOM 2016)...
October 23, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29056954/trends-in-the-rates-of-hospitalizations-for-acute-stroke-among-patients-over-90-years-of-age-with-atrial-fibrillation-in-the-united-states-from-2005-to-2014
#18
Ghanshyam Ps Shantha, Amgad Mentias, Musab Alqasrawi, Abdul Qazi, Chakradhari Inampudi, Kongkiat Chaikriangkrai, Abhishek Deshmuk, Steven Bailin, Michael Giudici, Alexander Mazur
BACKGROUND: Acute stroke (AS) rates in patients over 90 years of age (very elderly) with atrial fibrillation (AF) in the United States (US) are not known. We assessed trends in hospitalizations for AS among very elderly with AF in the US from 2005 to 2014. METHODS: We used the nationwide inpatient sample (NIS) from the USA; 2005-2014. AF and AS diagnoses were abstracted using international classification of diseases, 9(th) Revision, clinical modification (ICD-9-CM) codes...
September 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/29056461/two-disease-causing-snap-25b-mutations-selectively-impair-snare-c-terminal-assembly
#19
Aleksander A Rebane, Bigeng Wang, Lu Ma, Hong Qu, Jeff Coleman, Shyam Krishnakumar, James E Rothman, Yongli Zhang
Synaptic exocytosis relies on assembly of three soluble N-ethylmaleimide-sensitive factor attachment receptor (SNARE) proteins into a parallel four-helix bundle to drive membrane fusion. SNARE assembly occurs by stepwise zippering of the vesicle-associated SNARE (v-SNARE) onto a binary SNARE complex on the target plasma membrane (t-SNARE). Zippering begins with slow N-terminal association followed by rapid C-terminal zippering, which serves as a power stroke to drive membrane fusion. SNARE mutations have been associated with numerous diseases, especially neurological disorders...
October 19, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29043776/art-advancing-science-filmmaking-leads-to-molecular-insights-at-the-nanoscale
#20
Charles Reilly, Donald E Ingber
Many have recognized the potential value of facilitating activities that span the art-science interface for the benefit of society; however, there are few examples that demonstrate how pursuit of an artistic agenda can lead to scientific insights. Here, we describe how we set out to produce an entertaining short film depicting the fertilization of the egg by sperm as a parody of a preview for another Star Wars movie to excite the public about science, but ended up developing a simulation tool for multiscale modeling...
October 18, 2017: ACS Nano
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