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Restorative Neurology and Neuroscience

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https://www.readbyqxmd.com/read/29036854/functional-repertoire-of-interleukin-6-in-the-central-nervous-system-a-review
#1
Klaus Heese
In an aging society with dementia imposing an increasing threat to higher brain cognitive functions, understanding the molecular and cellular events of adult neurogenesis is imperative. Interleukin-6 (IL-6), along with its agonistic acting soluble receptor sIL-6R (the combined proteins are also known as Hyper-IL-6), is a promising cytokine that can support neurogenesis under conditions of neurodegeneration when neuron replacement is needed. In contrast to the previously reported gliogenic effects of activation of the IL-6-signal transducer and activator of transcription 3 (STAT3) axis, this review summarizes recent studies showing that IL-6 activation can be neurogenic and has potential therapeutic applications for the treatment of neurodegenerative diseases such as Parkinson's disease...
October 9, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29036853/smooth-leader-or-sharp-follower-playing-the-mirror-game-with-a-robot
#2
Shir Kashi, Shelly Levy-Tzedek
BACKGROUND: The increasing number of opportunities for human-robot interactions in various settings, from industry through home use to rehabilitation, creates a need to understand how to best personalize human-robot interactions to fit both the user and the task at hand. In the current experiment, we explored a human-robot collaborative task of joint movement, in the context of an interactive game. OBJECTIVE: We set out to test people's preferences when interacting with a robotic arm, playing a leader-follower imitation game (the mirror game)...
October 9, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29036852/rehabilitation-modality-and-onset-differentially-influence-whisker-sensory-hypersensitivity-after-diffuse-traumatic-brain-injury-in-the-rat
#3
Theresa Currier Thomas, Ellen Magee Stockhausen, L Matthew Law, Aida Khodadad, Jonathan Lifshitz
BACKGROUND: As rehabilitation strategies advance as therapeutic interventions, the modality and onset of rehabilitation after traumatic brain injury (TBI) are critical to optimize treatment. Our laboratory has detected and characterized a late-onset, long-lasting sensory hypersensitivity to whisker stimulation in diffuse brain-injured rats; a deficit that is comparable to visual or auditory sensory hypersensitivity in humans with an acquired brain injury. OBJECTIVE: We hypothesize that the modality and onset of rehabilitation therapies will differentially influence sensory hypersensitivity in response to the Whisker Nuisance Task (WNT) as well as WNT-induced corticosterone (CORT) stress response in diffuse brain-injured rats and shams...
October 9, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29036851/a-novel-low-cost-approach-for-navigated-transcranial-magnetic-stimulation
#4
Jakob Rodseth, Edward P Washabaugh, Chandramouli Krishnan
BACKGROUND: Transcranial magnetic stimulation (TMS) is commonly used for assessing or modulating brain excitability. However, the credibility of TMS outcomes depends on accurate and reliable coil placement during stimulation. Navigated TMS systems can address this issue, but these systems are expensive for routine use in clinical and research environments. OBJECTIVE: The purpose of this study was to provide a high-quality open source framework for navigated TMS and test its reliability and accuracy using standard TMS procedures...
October 9, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28968249/evaluating-the-relationship-between-white-matter-integrity-cognition-and-varieties-of%C3%A2-video-game-learning
#5
Nicholas R Ray, Margaret A O'Connell, Kaoru Nashiro, Evan T Smith, Shuo Qin, Chandramallika Basak
BACKGROUND: Many studies are currently researching the effects of video games, particularly in the domain of cognitive training. Great variability exists among video games however, and few studies have attempted to compare different types of video games. Little is known, for instance, about the cognitive processes or brain structures that underlie learning of different genres of video games. OBJECTIVE: To examine the cognitive and neural underpinnings of two different types of game learning in order to evaluate their common and separate correlates, with the hopes of informing future intervention research...
September 27, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28854520/neuroplasticity-and-behavioral-effects-of%C3%A2-fluoxetine-after-experimental-stroke
#6
Yefei Sun, Xiaoyu Sun, Huiling Qu, Shanshan Zhao, Ting Xiao, Chuansheng Zhao
The brain can undergo self-repair and has the ability to compensate for functions lost after a stroke. The plasticity of the ischemic brain is influenced by several factors including aging and pharmacotherapy. Fluoxetine is an antidepressant which enhances serotonergic neurotransmission through selective inhibition of neuronal reuptake of serotonin. In clinical practice, fluoxetine alleviates the symptoms of post-stroke depression (PSD), helps motor recovery in stroke patients. In animal experiments, chronic administration of fluoxetine induces increased excitability of mature granule cells (GCs), enhancing axonal and dendritic reorganization, as well as promoting neurogenesis or angiogenesis in the dentate gurus (DG), but the effect of fluoxetine in the subventricular zone (SVZ) remains controversial...
August 24, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28800341/robotic-assisted-gait-training-combined-with-transcranial-direct-current-stimulation-in-chronic-stroke-patients-a-pilot-double-blind-randomized-controlled-trial
#7
Han Gil Seo, Woo Hyung Lee, Seung Hak Lee, Youbin Yi, Kwang Dong Kim, Byung-Mo Oh
BACKGROUND: Although robotic-assisted gait training (RAGT) is becoming a standard method in stroke rehabilitation, its effect on chronic stroke patients is uncertain. OBJECTIVE: This study aimed to investigate whether anodal tDCS (transcranial direct current stimulation) enhances the effect of RAGT on functional ambulation in chronic stroke patients. METHODS: Chronic hemiplegic stroke patients with a Functional Ambulatory Category (FAC) score≤4 were randomly assigned to either the RAGT with anodal tDCS (Anodal) group or the sham tDCS (Sham) group...
August 11, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28800340/reducing-the-rate-of-misdiagnosis-in%C3%A2-patients-with-chronic-disorders-of%C3%A2-consciousness-is-there-a-place-for-audiovisual-stimulation
#8
Antonino Naro, Antonino Leo, Rocco Bruno, Antonino Cannavò, Antonio Buda, Alfredo Manuli, Alessia Bramanti, Placido Bramanti, Rocco Salvatore Calabrò
BACKGROUND: The patients with chronic Disorders of Consciousness (DoC) mostly present with extremely challenging differential diagnosis. The advanced analysis of electroencephalographic (EEG) signals induced by brain stimulation paradigms may provide an appropriate approach to differentiate patients with DoC, besides the clinical assessment. OBJECTIVE: This study was performed with an objective of identifying residual brain network perturbations following an innovative, non-invasive audiovisual stimulation protocol, which could be related to behavioral responsiveness in patients with DoC...
August 11, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28800339/perceptual-learning-improves-contrast-sensitivity-visual-acuity-and-foveal-crowding-in-amblyopia
#9
Michele Barollo, Giulio Contemori, Luca Battaglini, Andrea Pavan, Clara Casco
BACKGROUND: Amblyopic observers present abnormal spatial interactions between a low-contrast sinusoidal target and high-contrast collinear flankers. It has been demonstrated that perceptual learning (PL) can modulate these low-level lateral interactions, resulting in improved visual acuity and contrast sensitivity. OBJECTIVE: We measured the extent and duration of generalization effects to various spatial tasks (i.e., visual acuity, Vernier acuity, and foveal crowding) through PL on the target's contrast detection...
August 11, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28059804/bupivacaine-increases-the-rate-of%C3%A2-motoneuron-death-following-peripheral%C3%A2-nerve-injury
#10
Susanna C Byram, Scott W Byram, Nicholas M Miller, Keith N Fargo
BACKGROUND: Appropriate management of pain after an injury or surgical procedure has been shown to improve patient outcomes. While infrequent, nerve damage resulting from regional anesthesia can be devastating, however the mechanism remains unknown. Local anesthetics are neurotoxic yet are frequently applied to sites where peripheral nerves are regenerating. Therefore, understanding their effects on injured and growing neurons may have important implications for clinical practice. OBJECTIVE: The purpose of this study was to determine if local anesthetics exacerbate the rate of motoneuron death following axotomy...
January 4, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28059800/twist-and-turn-into-chronic-disorders-of%C3%A2-consciousness-potential-role-of%C3%A2-the%C3%A2-auditory-stapedial-reflex
#11
Antonino Naro, Rocco Bruno, Antonino Leo, Margherita Russo, Carlo Salviera, Alessia Bramanti, Placido Bramanti, Rocco Salvatore Calabrò
BACKGROUND: Patients suffering from chronic disorders of consciousness (DOC), including minimally conscious state (MCS) and unresponsive wakefulness syndrome (UWS), typically show an awareness impairment paralleled by a significant reflex hyper-excitability, which depend on the cortical deafferentation following brain-damage-induced thalamocortical system deterioration. Nonetheless, recent studies have shown a residual preservation of cortico-subcortical pathways that may sustain residual fragments of awareness in some DOC patients...
January 3, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28984621/the-effects-of-exercise-on-cognitive-function-and-brain-plasticity-a-feasibility-trial
#12
Joyce Gomes-Osman, Danylo F Cabral, Carrie Hinchman, Ali Jannati, Timothy P Morris, Alvaro Pascual-Leone
BACKGROUND: Exercise-mediated cognitive improvements can be at least partly attributed to neuroplastic changes in the nervous system, and may be influenced by the Val66Met polymorphism of the brain-derived neurotrophic factor (BDNF) gene. Transcranial magnetic stimulation (TMS) can be used to assess mechanisms of plasticity in humans noninvasively. OBJECTIVES: To assess the feasibility of evaluating the effects of short-term regular exercise on cognitive performance, and to evaluate the relationship between these effects, TMS measures of plasticity, and BDNF Met carrier status in young healthy sedentary adults...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28984620/making-if-then-plans-counteracts-learned-non-use-in-stroke-patients-a-proof-of-principle-study
#13
Michael K Marquardt, Anna-Lisa Cohen, Peter M Gollwitzer, Sam J Gilbert, Christian Dettmers
BACKGROUND: After stroke, the learned non-use of a paretic arm is a major obstacle to the improvement of hand function. OBJECTIVE: We examined whether patients with a central paresis could profit from applying the self-regulation strategy of making if-then plans that specify situational triggers to using the paretic arm. METHOD: Seventeen stroke patients with a mild to moderate hand paresis were asked to perform a Simon task which is commonly used to study the enhanced executive control needed when there is a mismatch between stimulus (e...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28984619/the-therapeutic-use-of-non-invasive-brain-stimulation-in-multiple-sclerosis-a-review
#14
Rosa Iodice, Fiore Manganelli, Raffaele Dubbioso
BACKGROUND: Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system and a leading cause of disability in young adults. Many disabling symptoms in MS, such as spasticity, pain, depression and cognitive deficits are not fully controlled by drug treatment. Non-invasive brain stimulation (NIBS) techniques can be used as tools for modulating altered cortical excitability and plasticity MS patients, providing an improvement in disabling symptoms affecting such patients...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28984618/reduced-th-expression-and-%C3%AE-synuclein-accumulation-contribute-towards-nigrostriatal-dysfunction-in-experimental-hepatic-encephalopathy
#15
Isabel Suárez, Guillermo Bodega, Miguel Rubio, Benjamín Fernández
PURPOSE: The present work examines α-synuclein expression in the nigrostriatal system of a rat chronic hepatic encephalopathy model induced by portacaval anastomosis (PCA). There is evidence that dopaminergic dysfunction in disease conditions is strongly associated with such expression. Possible relationships among dopaminergic neurons, astroglial cells and α-synuclein expression were sought. METHODS: Brain tissue samples from rats at 1 and 6 months post-PCA, and controls, were analysed immunohistochemically using antibodies against tyrosine hydroxylase (TH), α-synuclein, glial fibrillary acidic protein (GFAP) and ubiquitin (Ub)...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28800343/microsaccade-dysfunction-and-adaptation-in-hemianopia-after-stroke
#16
Ying Gao, Bernhard A Sabel
BACKGROUND: Besides the reduction of visual field size, hemianopic patients may also experience other poorly understood symptoms such as blurred vision, diplopia, or reduced visual acuity, which may be related to microsaccade function. OBJECTIVE: To determine (i) if microsaccades are altered in hemianopia; (ii) how altered microsaccade features correlate with visual performances; and (iii) how their direction relates to visual field defect topography. METHODS: In this case-control study, microsaccades of hemianopic stroke patients (n = 14) were assessed with high-resolution eye-tracking technique, compared with those of healthy controls (n = 14), and correlated with visual performances, visual field defect parameters and lesion age...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28800342/use-of-melatonin-versus-valproic-acid-in-prophylaxis-of-migraine-patients-a-double-blind-randomized-clinical-trial
#17
Mohsen Ebrahimi-Monfared, Mojtaba Sharafkhah, Ali Abdolrazaghnejad, Abolfazl Mohammadbeigi, Fardin Faraji
BACKGROUND: Melatonin is known to be effective in curing migraine. OBJECTIVE: This study aimed to investigate the therapeutic effect of melatonin versus sodium valproate in the prophylaxis of chronic migraine. METHODS: This randomized, double-blind, placebo-controlled clinical trial included patients with chronic migraine who were divided into three equal sized groups, and baseline therapy with nortriptyline (10-25 mg) and propranolol (20-40 mg) was used...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28697575/bimanual-coordination-a-missing-piece-of-arm-rehabilitation-after-stroke
#18
Shailesh Kantak, Steven Jax, George Wittenberg
Inability to use the arm in daily actions significantly lowers quality of life after stroke. Most contemporary post-stroke arm rehabilitation strategies that aspire to re-engage the weaker arm in functional activities have been greatly limited in their effectiveness. Most actions of daily life engage the two arms in a highly coordinated manner. In contrast, most rehabilitation approaches predominantly focus on restitution of the impairments and unilateral practice of the weaker hand alone. We present a perspective that this misalignment between real world requirements and intervention strategies may limit the transfer of unimanual capability to spontaneous arm use and functional recovery...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28697574/tdcs-does-not-enhance-the-effects-of-robot-assisted-gait-training-in-patients-with-subacute-stroke
#19
Daniel Leon, Mar Cortes, Jessica Elder, Hatice Kumru, Sara Laxe, Dylan James Edwards, Josep Maria Tormos, Montserrat Bernabeu, Alvaro Pascual-Leone
BACKGROUND: Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique, which can modulate cortical excitability and combined with rehabilitation therapies may improve motor recovery after stroke. OBJECTIVE: Our aim was to study the feasibility of a 4-week robotic gait training protocol combined with tDCS, and to study tDCS to the leg versus hand motor cortex or sham to improve walking ability in patients after a subacute stroke...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28697573/dual-tasking-negatively-impacts-obstacle-avoidance-abilities-in-post-stroke-individuals-with-visuospatial-neglect-task-complexity-matters
#20
Gayatri Aravind, Anouk Lamontagne
BACKGROUND: Persons with perceptual-attentional deficits due to visuospatial neglect (VSN) after a stroke are at a risk of collisions while walking in the presence of moving obstacles. The attentional burden of performing a dual-task may further compromise their obstacle avoidance performance, putting them at a greater risk of collisions. OBJECTIVE: The objective of this study was to compare the ability of persons with (VSN+) and without VSN (VSN-) to dual task while negotiating moving obstacles...
2017: Restorative Neurology and Neuroscience
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