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Frontiers in Neurology

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https://www.readbyqxmd.com/read/29692756/hierarchical-cluster-analysis-of-semicircular-canal-and-otolith-deficits-in-bilateral-vestibulopathy
#1
Alexander A Tarnutzer, Christopher J Bockisch, Elena Buffone, Konrad P Weber
Background: Gait imbalance and oscillopsia are frequent complaints of bilateral vestibular loss (BLV). Video-head-impulse testing (vHIT) of all six semicircular canals (SCCs) has demonstrated varying involvement of the different canals. Sparing of anterior-canal function has been linked to aminoglycoside-related vestibulopathy and Menière's disease. We hypothesized that utricular and saccular impairment [assessed by vestibular-evoked myogenic potentials (VEMPs)] may be disease-specific also, possibly facilitating the differential diagnosis...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29692755/prehospital-intubation-and-outcome-in-traumatic-brain-injury-assessing-intervention-efficacy-in-a-modern-trauma-cohort
#2
Rebecka Rubenson Wahlin, David W Nelson, Bo-Michael Bellander, Mikael Svensson, Adel Helmy, Eric Peter Thelin
Background: Prehospital intubation in traumatic brain injury (TBI) focuses on limiting the effects of secondary insults such as hypoxia, but no indisputable evidence has been presented that it is beneficial for outcome. The aim of this study was to explore the characteristics of patients who undergo prehospital intubation and, in turn, if these parameters affect outcome. Material and methods: Patients ≥15 years admitted to the Department of Neurosurgery, Stockholm, Sweden with TBI from 2008 through 2014 were included...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29686647/modeling-parkinson-s-disease-in-drosophila-what-have-we-learned-for-dominant-traits
#3
REVIEW
Yulan Xiong, Jianzhong Yu
Parkinson's disease (PD) is recognized as the second most common neurodegenerative disorder after Alzheimer's disease. Unfortunately, there is no cure or proven disease modifying therapy for PD. The recent discovery of a number of genes involved in both sporadic and familial forms of PD has enabled disease modeling in easily manipulable model systems. Various model systems have been developed to study the pathobiology of PD and provided tremendous insights into the molecular mechanisms underlying dopaminergic neurodegeneration...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29686646/therapy-induced-neuroplasticity-in-chronic-aphasia-after-phonological-component-analysis-a-matter-of-intensity
#4
Karine Marcotte, Laura Laird, Tali Bitan, Jed A Meltzer, Simon J Graham, Carol Leonard, Elizabeth Rochon
Despite the growing evidence regarding the importance of intensity and dose in aphasia therapy, few well-controlled studies contrasting the effects of intensive and non-intensive treatment have been conducted to date. Phonological components analysis (PCA) treatment for anomia has been associated with improvements in some patients with chronic aphasia; however, the effect of treatment intensity has not yet been studied with PCA. Thus, the aim of the present study was to identify the effect of intensity on neural processing associated with word retrieval abilities after PCA treatment...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29686645/phantom-limb-pain-in-pediatric-oncology
#5
REVIEW
Patrick DeMoss, Logan H Ramsey, Cynthia Windham Karlson
Phantom limb pain (PLP) is a prevalent problem for children and adolescents undergoing amputation due to cancer treatment. The symptoms are wide ranging from sharp to tingling. PLP in children typically lasts for a few minutes but can be almost constant and can be highly distressing. This focused review describes the characteristics, epidemiology, mechanisms, and evidence-based treatment of PLP in pediatric populations, focusing on pediatric cancer. In pediatric oncology, the administration of chemotherapy is a risk factor that potentially sensitizes the nervous system and predisposes pediatric cancer patients to develop PLP after amputation...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29686644/technological-approaches-for-neurorehabilitation-from-robotic-devices-to-brain-stimulation-and-beyond
#6
Marianna Semprini, Matteo Laffranchi, Vittorio Sanguineti, Laura Avanzino, Roberto De Icco, Lorenzo De Michieli, Michela Chiappalone
Neurological diseases causing motor/cognitive impairments are among the most common causes of adult-onset disability. More than one billion of people are affected worldwide, and this number is expected to increase in upcoming years, because of the rapidly aging population. The frequent lack of complete recovery makes it desirable to develop novel neurorehabilitative treatments, suited to the patients, and better targeting the specific disability. To date, rehabilitation therapy can be aided by the technological support of robotic-based therapy, non-invasive brain stimulation, and neural interfaces...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29686643/inhibition-of-mtorc1-signaling-reverts-cognitive-and-affective-deficits-in-a-mouse-model-of-parkinson-s-disease
#7
Débora Masini, Alessandra Bonito-Oliva, Maëlle Bertho, Gilberto Fisone
Non-motor symptoms, including cognitive deficits and affective disorders, are frequently diagnosed in Parkinson's disease (PD) patients and are only partially alleviated by dopamine replacement therapy. Here, we used a 6-hydroxydopamine (6-OHDA) mouse model of PD to examine the effects exerted on non-motor symptoms by inhibition of the mammalian target of rapamycin complex 1 (mTORC1), which is involved in the control of protein synthesis, cell growth, and metabolism. We show that rapamycin, which acts as an allosteric inhibitor of mTORC1, counteracts the impairment of novel object recognition...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29686642/efficacy-of-novel-carbon-nanoparticle-antioxidant-therapy-in-a-severe-model-of-reversible-middle-cerebral-artery-stroke-in-acutely-hyperglycemic-rats
#8
Roderic H Fabian, Paul J Derry, Harriett Charmaine Rea, William V Dalmeida, Lizanne G Nilewski, William K A Sikkema, Pitchaiah Mandava, Ah-Lim Tsai, Kimberly Mendoza, Vladimir Berka, James M Tour, Thomas A Kent
Introduction: While oxidative stress can be measured during transient cerebral ischemia, antioxidant therapies for ischemic stroke have been clinically unsuccessful. Many antioxidants are limited in their range and/or capacity for quenching radicals and can generate toxic intermediates overwhelming depleted endogenous protection. We developed a new antioxidant class, 40 nm × 2 nm carbon nanoparticles, hydrophilic carbon clusters, conjugated to poly(ethylene glycol) termed PEG-HCCs...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29681886/importance-of-collateralization-in-patients-with-large-artery-intracranial-occlusive-disease-long-term-longitudinal-assessment-of-cerebral-hemodynamic-function
#9
Larissa McKetton, Lakshmikumar Venkatraghavan, Julien Poublanc, Olivia Sobczyk, Adrian P Crawley, Casey Rosen, Frank L Silver, James Duffin, Joseph A Fisher, David J Mikulis
Patients with large artery intracranial occlusive disease (LAICOD) are at risk for both acute ischemia and chronic hypoperfusion. Collateral circulation plays an important role in prognosis, and imaging plays an essential role in diagnosis, treatment planning, and prognosis of patients with LAICOD. In addition to standard structural imaging, assessment of cerebral hemodynamic function is important to determine the adequacy of collateral supply. Among the currently available methods of assessment of cerebral hemodynamic function, measurement of cerebrovascular reactivity (CVR) using blood oxygen level-dependent (BOLD) MRI and precisely controlled CO2 has shown to be a safe, reliable, reproducible, and clinically useful method for long-term assessment of patients...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29681885/right-hemisphere-regions-critical-for-expression-of-emotion-through-prosody
#10
Sona Patel, Kenichi Oishi, Amy Wright, Harry Sutherland-Foggio, Sadhvi Saxena, Shannon M Sheppard, Argye E Hillis
Impaired expression of emotion through pitch, loudness, rate, and rhythm of speech (affective prosody) is common and disabling after right hemisphere (RH) stroke. These deficits impede all social interactions. Previous studies have identified cortical areas associated with impairments of expression, recognition, or repetition of affective prosody, but have not identified critical white matter tracts. We hypothesized that: (1) differences across patients in specific acoustic features correlate with listener judgment of affective prosody and (2) these differences are associated with infarcts of specific RH gray and white matter regions...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29681884/glutathione-s-transferase-alpha-4-prevents-dopamine-neurodegeneration-in-a-rat-alpha-synuclein-model-of-parkinson-s-disease
#11
Michael Jewett, Elna Dickson, Kajsa Brolin, Matilde Negrini, Itzia Jimenez-Ferrer, Maria Swanberg
Parkinson's disease (PD) is a common, progressive neurodegenerative disease, which typically presents itself with a range of motor symptoms, like resting tremor, bradykinesia, and rigidity, but also non-motor symptoms such as fatigue, constipation, and sleep disturbance. Neuropathologically, PD is characterized by loss of dopaminergic cells in the substantia nigra pars compacta (SNpc) and Lewy bodies, neuronal inclusions containing α-synuclein (α-syn). Mutations and copy number variations of SNCA , the gene encoding α-syn, are linked to familial PD and common SNCA gene variants are associated to idiopathic PD...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29681883/compromised-blood-brain-barrier-integrity-is-associated-with-total-magnetic-resonance-imaging-burden-of-cerebral-small-vessel-disease
#12
Yue Li, Man Li, Long Zuo, Qinglei Shi, Wei Qin, Lei Yang, Tao Jiang, Wenli Hu
Objective: Several studies have demonstrated that compromised blood-brain barrier (BBB) integrity may play a pivotal role in the pathogenesis of individual cerebral small vessel disease (cSVD) markers, but the association between BBB permeability and total magnetic resonance imaging (MRI) cSVD burden remains unclear. This study aimed to investigate the relationship between BBB permeability and total MRI cSVD burden. Methods: Consecutive participants without symptomatic stroke history presented for physical examination were enrolled in this cross-sectional study...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29681882/are-there-modifiable-environmental-factors-related-to-amyotrophic-lateral-sclerosis
#13
Bozenna Kuraszkiewicz, Teresa Podsiadły-Marczykowska, Hanna Goszczyńska, Maria Piotrkiewicz
No abstract text is available yet for this article.
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29681881/factors-associated-with-remote-diffusion-weighted-imaging-lesions-in-spontaneous-intracerebral-hemorrhage
#14
Xiang-Hua Ye, Ting Gao, Xu-Hua Xu, Jin-Song Cai, Jia-Wen Li, Kai-Ming Liu, Shui-Jiang Song, Xin-Zhen Yin, Lu-Sha Tong, Feng Gao
Background and purpose: Remote diffusion-weighted imaging lesions (R-DWILs) have been detected in patients with spontaneous intracerebral hemorrhage (ICH) and may be correlated with clinical outcome. However, the mechanisms and characteristics of R-DWILs have not been fully elucidated. In this study, we sought to demonstrate the clinical characteristics of R-DWILs in spontaneous ICH. Methods: We prospectively collected data with spontaneous ICH patients from November 2016 to December 2017...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29681880/exploring-the-role-of-temporoparietal-cortex-in-upright-perception-and-the-link-with-torsional-eye-position
#15
Jorge Otero-Millan, Ariel Winnick, Amir Kheradmand
Upright perception is a key aspect of orientation constancy, as we maintain a stable perception of the world despite continuous movements of our eyes, head, and body. Torsional position of the eyes can impact perception of upright by changing orientation of the images on the retina relative to gravity. Here, we investigated the role of temporoparietal cortex in upright perception with respect to ocular torsion, by means of the inhibitory effect of continuous theta burst transcranial magnetic stimulation (TMS)...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29674994/a-cross-sectional-study-on-cerebral-hemodynamics-after-mild-traumatic-brain-injury-in-a-pediatric-population
#16
Corey M Thibeault, Samuel Thorpe, Michael J O'Brien, Nicolas Canac, Mina Ranjbaran, Ilyas Patanam, Artin Sarraf, James LeVangie, Fabien Scalzo, Seth J Wilk, Ramon Diaz-Arrastia, Robert B Hamilton
The microvasculature is prominently affected by traumatic brain injury (TBI), including mild TBI (concussion). Assessment of cerebral hemodynamics shows promise as biomarkers of TBI, and may help inform development of therapies aimed at promoting neurologic recovery. The objective of this study was to assess the evolution in cerebral hemodynamics observable with transcranial Doppler (TCD) ultrasound in subjects suffering from a concussion at different intervals during recovery. Pediatric subjects between the ages of 14 and 19 years clinically diagnosed with a concussion were observed at different points post-injury...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29670575/mog-igg-associated-optic-neuritis-encephalitis-and-myelitis-lessons-learned-from-neuromyelitis-optica-spectrum-disorder
#17
REVIEW
Giordani Rodrigues Dos Passos, Luana Michelli Oliveira, Bruna Klein da Costa, Samira Luisa Apostolos-Pereira, Dagoberto Callegaro, Kazuo Fujihara, Douglas Kazutoshi Sato
Antibodies against myelin oligodendrocyte glycoprotein (MOG-IgG) have been found in some cases diagnosed as seronegative neuromyelitis optica spectrum disorder (NMOSD). MOG-IgG allowed the identification of a subgroup with a clinical course distinct from that of NMOSD patients who are seropositive for aquaporin-4-IgG antibodies. MOG-IgG is associated with a wider clinical phenotype, not limited to NMOSD, with the majority of cases presenting with optic neuritis (ON), encephalitis with brain demyelinating lesions, and/or myelitis...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29670574/editorial-new-advanced-wireless-technologies-for-objective-monitoring-of-motor-symptoms-in-parkinson-s-disease
#18
EDITORIAL
Fernanda Irrera, Joan Cabestany, Antonio Suppa
No abstract text is available yet for this article.
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29670573/gait-asymmetry-in-people-with-parkinson-s-disease-is-linked-to-reduced-integrity-of-callosal-sensorimotor-regions
#19
Brett W Fling, Carolin Curtze, Fay B Horak
Background: Individuals with Parkinson's disease (PD) often manifest significant temporal and spatial asymmetries of the lower extremities during gait, which significantly contribute to mobility impairments. While the neural mechanisms underlying mobility asymmetries within this population remain poorly understood, recent evidence points to altered microstructural integrity of white matter fiber tracts within the corpus callosum as potentially playing a substantial role. Objectives: The purpose of this study was to quantify spatial and temporal gait asymmetries as well as transcallosal microstructural integrity of white matter fiber tracts connecting the primary and secondary sensorimotor cortices in people with PD and age-matched control participants...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29670572/myasthenia-gravis-with-thymoma-manifesting-as-achr-ab-positive-distinct-bulbar-palsy-accompanied-by-dysgeusia-a-case-series-and-review-of-literature
#20
Kai Zhu, Jiaxin Chen, Jingjing Li, Haiyan Wang, Xin Huang, Yan Li, Huiyu Feng
In this review, we summarized three cases of myasthenia gravis (MG) with taste disorder and describe their clinical features in detail. Three MG patients presented with significant bulbar palsy symptoms, high AChR-Ab titers, and negative MuSK-Ab, were diagnosed with thymoma. Furthermore, we observed that dysgeusia could manifest earlier than the occurrence of typical MG symptoms, even predict a MG relapse or a myasthenic crisis in the course of MG. We believe that dysgeusia is a non-motor symptom of MG, which especially exists in MG patients with thymoma and serious bulbar palsy...
2018: Frontiers in Neurology
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