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Frontiers in Neurology

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https://www.readbyqxmd.com/read/28634469/alexander-disease-mutations-produce-cells-with-coexpression-of-glial-fibrillary-acidic-protein-and-ng2-in-neurosphere-cultures-and-inhibit-differentiation-into-mature-oligodendrocytes
#1
Ulises Gómez-Pinedo, Maria Salomé Sirerol-Piquer, María Durán-Moreno, José Manuel García-Verdugo, Jorge Matias-Guiu
BACKGROUND: Alexander disease (AxD) is a rare disease caused by mutations in the gene encoding glial fibrillary acidic protein (GFAP). The disease is characterized by presence of GFAP aggregates in the cytoplasm of astrocytes and loss of myelin. OBJECTIVES: Determine the effect of AxD-related mutations on adult neurogenesis. METHODS: We transfected different types of mutant GFAP into neurospheres using the nucleofection technique. RESULTS: We find that mutations may cause coexpression of GFAP and NG2 in neurosphere cultures, which would inhibit the differentiation of precursors into oligodendrocytes and thus explain the myelin loss occurring in the disease...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28634468/fragile-x-syndrome-prevalence-treatment-and-prevention-in-china
#2
REVIEW
Manman Niu, Ying Han, Angel Belle C Dy, Junbao Du, Hongfang Jin, Jiong Qin, Jing Zhang, Qinrui Li, Randi J Hagerman
Fragile X syndrome (FXS) is the most common inherited cause of intellectual disability and the leading monogenic cause of autism spectrum disorder. Although FXS has been studied for several decades, there is relatively little basic science or clinical research being performed on FXS in China. Indeed, there is a large gap between China and Western countries in the FXS field. China has a potentially large number of FXS patients. However, many of them are underdiagnosed or even misdiagnosed, and treatments are not always administered in the Chinese population...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28634467/brain-network-activation-technology-does-not-assist-with-concussion-diagnosis-and-return-to-play-in-football-athletes
#3
Steven P Broglio, Richelle Williams, Andrew Lapointe, Ashley Rettmann, Brandon Moore, Sean K Meehan, James T Eckner
BACKGROUND: Concussion diagnosis and management remains a largely subjective process. This investigation sought to evaluate the utility of a novel neuroelectric measure for concussion diagnosis and return to play decision-making. HYPOTHESIS: Brain Network Activation (BNA) scores obtained within 72-h of injury will be lower than the athlete's preseason evaluation and that of a matched control athlete; and the BNA will demonstrate ongoing declines at the return to play and post-season time points, while standard measures will have returned to pre-injury and control athlete levels...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28634466/abnormal-temporal-coupling-of-tactile-perception-and-motor-action-in-parkinson-s-disease
#4
Antonella Conte, Daniele Belvisi, Matteo Tartaglia, Francesca Natalia Cortese, Viola Baione, Emanuele Battista, Xiao Y Zhu, Giovanni Fabbrini, Alfredo Berardelli
Evidence shows altered somatosensory temporal discrimination threshold (STDT) in Parkinson's disease in comparison to normal subjects. In healthy subjects, movement execution modulates STDT values through mechanisms of sensory gating. We investigated whether STDT modulation during movement execution in patients with Parkinson's disease differs from that in healthy subjects. In 24 patients with Parkinson's disease and 20 healthy subjects, we tested STDT at baseline and during index finger abductions (at movement onset "0", 100, and 200 ms thereafter)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28634465/abnormal-resting-state-functional-connectivity-in-progressive-supranuclear-palsy-and-corticobasal-syndrome
#5
Komal Bharti, Matteo Bologna, Neeraj Upadhyay, Maria Cristina Piattella, Antonio Suppa, Nikolaos Petsas, Costanza Giannì, Francesca Tona, Alfredo Berardelli, Patrizia Pantano
BACKGROUND: Pathological and MRI-based evidence suggests that multiple brain structures are likely to be involved in functional disconnection between brain areas. Few studies have investigated resting-state functional connectivity (rsFC) in progressive supranuclear palsy (PSP) and corticobasal syndrome (CBS). In this study, we investigated within- and between-network rsFC abnormalities in these two conditions. METHODS: Twenty patients with PSP, 11 patients with CBS, and 16 healthy subjects (HS) underwent a resting-state fMRI study...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28634464/anti-inflammatory-and-neuroprotective-effects-of-co-ultrapealut-in-a-mouse-model-of-vascular-dementia
#6
Rosalba Siracusa, Daniela Impellizzeri, Marika Cordaro, Rosalia Crupi, Emanuela Esposito, Stefania Petrosino, Salvatore Cuzzocrea
Vascular dementia (VaD), the second most common cause of cognitive impairment in the population, is a disease that results from reduction in regional cerebral blood flow and involves oxidative stress and inflammation. Co-ultramicronized PEALut (co-ultra PEALut) is a new compound with beneficial effects, which include anti-inflammatory and antioxidant properties. Recently, co-ultraPEALut has been shown to exhibit neuroprotective effects in models of Parkinson's disease, cerebral ischemia and Alzheimer's disease...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28634463/protective-effect-of-n-acetylcysteine-amide-on-blast-induced-increase-in-intracranial-pressure-in-rats
#7
Usmah Kawoos, Richard M McCarron, Mikulas Chavko
Blast-induced traumatic brain injury is associated with acute and possibly chronic elevation of intracranial pressure (ICP). The outcome after TBI is dependent on the progression of complex processes which are mediated by oxidative stress. So far, no effective pharmacological protection against TBI exists. In this study, rats were exposed to a single or repetitive blast overpressure (BOP) at moderate intensities of 72 or 110 kPa in a compressed air-driven shock tube. The degree and duration of the increase in ICP were proportional to the intensity and frequency of the blast exposure(s)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28626445/adverse-childhood-experiences-are-linked-to-age-of-onset-and-reading-recognition-in-multiple-sclerosis
#8
Michael T Shaw, Natalie O Pawlak, Ariana Frontario, Kathleen Sherman, Lauren B Krupp, Leigh E Charvet
BACKGROUND: Adverse childhood experiences (ACEs) exert a psychological and physiological toll that increases risk of chronic conditions, poorer social functioning, and cognitive impairment in adulthood. OBJECTIVE: To investigate the relationship between childhood adversity and clinical disease features in multiple sclerosis (MS). METHODS: Sixty-seven participants with MS completed the ACE assessment and neuropsychological assessments as part of a larger clinical trial of cognitive remediation...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28626444/aging-with-cerebral-small-vessel-disease-and-dizziness-the-importance-of-undiagnosed-peripheral-vestibular-disorders
#9
Niccolò Cerchiai, Michelangelo Mancuso, Elena Navari, Nicola Giannini, Augusto Pietro Casani
Recent studies showed a link between cerebral small vessel white matter disease (SVD) and dizziness: patients whose dizziness cannot be explained by vestibular disease show severe SVD and gait abnormalities; however, little is still known about how SVD can cause this symptom. The primary aim of this study is to examine the possible underlying causes of dizziness in neurovascular patients; this is in order to assess whether treatable causes could be routinely disregarded. A secondary aim is to possibly define a central oculomotor pattern induced per se by SVD...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620351/determining-causation-from-observational-studies-a-challenge-for-modern-neuroepidemiology
#10
EDITORIAL
George A Jelinek
No abstract text is available yet for this article.
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620350/considerations-for-experimental-animal-models-of-concussion-traumatic-brain-injury-and-chronic-traumatic-encephalopathy-these-matters-matter
#11
REVIEW
Mark W Wojnarowicz, Andrew M Fisher, Olga Minaeva, Lee E Goldstein
Animal models of concussion, traumatic brain injury (TBI), and chronic traumatic encephalopathy (CTE) are widely available and routinely deployed in laboratories around the world. Effective animal modeling requires careful consideration of four basic principles. First, animal model use must be guided by clarity of definitions regarding the human disease or condition being modeled. Concussion, TBI, and CTE represent distinct clinical entities that require clear differentiation: concussion is a neurological syndrome, TBI is a neurological event, and CTE is a neurological disease...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620349/localization-of-deep-brain-stimulation-contacts-using-corticospinal-corticobulbar-tracts-stimulation
#12
Julien F Bally, Maria-Isabel Vargas, Judit Horvath, Vanessa Fleury, Pierre Burkhard, Shahan Momjian, Pierre Pollak, Colette Boex
BACKGROUND: Successful deep brain stimulation (DBS) in Parkinson's disease (PD) requires optimal electrode placement. One technique of intraoperative electrode testing is determination of stimulation thresholds inducing corticospinal/corticobulbar tracts (CSBT) motor contractions. OBJECTIVE: This study aims to analyze correlations between DBS electrode distance to CSBT and contraction thresholds, with either visual or electromyography (EMG) detection, to establish an intraoperative tool devoted to ensure safe distance of the electrode to the CSBT...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620348/the-utility-of-fdg-pet-ct-in-clinically-suspected-paraneoplastic-neurological-syndrome-a-literature-review-and-retrospective-case-series
#13
Mark P Maskery, Jonathan Hill, John R Cain, Hedley C A Emsley
Paraneoplastic neurological syndrome (PNS) describes a spectrum of rare, heterogeneous neurological conditions associated with an underlying malignancy. Diagnosis of PNS is inherently difficult, with frequent misdiagnosis and delay. The literature suggests an underlying immune-mediated pathophysiology, and patients are usually tested for the presence of onconeural antibodies. With direct tumor therapy being the most effective method of stabilizing patients, there is a strong emphasis on detecting underlying tumors...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620347/neural-consequences-of-chronic-short-sleep-reversible-or-lasting
#14
REVIEW
Zhengqing Zhao, Xiangxiang Zhao, Sigrid C Veasey
Approximately one-third of adolescents and adults in developed countries regularly experience insufficient sleep across the school and/or work week interspersed with weekend catch up sleep. This common practice of weekend recovery sleep reduces subjective sleepiness, yet recent studies demonstrate that one weekend of recovery sleep may not be sufficient in all persons to fully reverse all neurobehavioral impairments observed with chronic sleep loss, particularly vigilance. Moreover, recent studies in animal models demonstrate persistent injury to and loss of specific neuron types in response to chronic short sleep (CSS) with lasting effects on sleep/wake patterns...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620346/primary-progressive-multiple-sclerosis-putting-together-the-puzzle
#15
REVIEW
Ahmed Abdelhak, Martin S Weber, Hayrettin Tumani
The focus of multiple sclerosis research has recently turned to the relatively rare and clearly more challenging condition of primary progressive multiple sclerosis (PPMS). Many risk factors such as genetic susceptibility, age, and Epstein-Barr virus (EBV) infection may interdepend on various levels, causing a complex pathophysiological cascade. Variable pathological mechanisms drive disease progression, including inflammation-associated axonal loss, continuous activation of central nervous system resident cells, such as astrocytes and microglia as well as mitochondrial dysfunction and iron accumulation...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620345/memory-for-spatial-locations-in-a-patient-with-near-space-neglect-and-optic-ataxia-involvement-of-the-occipitotemporal-stream
#16
Sergio Chieffi, Giovanni Messina, Antonietta Messina, Ines Villano, Vincenzo Monda, Ferdinando Ivano Ambra, Elisabetta Garofalo, Felice Romano, Maria Pina Mollica, Marcellino Monda, Alessandro Iavarone
Previous studies suggested that the occipitoparietal stream orients attention toward the near/lower space and is involved in immediate reaching, whereas the occipitotemporal stream orients attention toward the far/upper space and is involved in delayed reaching. In the present study, we investigated the role of the occipitotemporal stream in attention orienting and delayed reaching in a patient (GP) with bilateral damage to the occipitoparietal areas and optic ataxia. GP and healthy controls took part in three experiments...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620344/the-role-of-osteopontin-and-its-gene-on-glucocorticoid-response-in-myasthenia-gravis
#17
Yanchen Xie, Hai-Feng Li, Liang Sun, Linda L Kusner, Shuhui Wang, Yunxiao Meng, Xu Zhang, Yu Hong, Xiang Gao, Yao Li, Henry J Kaminski
Biomarkers that assess treatment response for patients with the autoimmune disorder, myasthenia gravis (MG), have not been evaluated to a significant extent. We hypothesized the pro-inflammatory cytokine, osteopontin (OPN), may be associated with variability of response to glucocorticoids (GCs) in patients with MG. A cohort of 250 MG patients treated with standardized protocol of GCs was recruited, and plasma OPN and polymorphisms of its gene, secreted phosphoprotein 1 (SPP1), were evaluated. Mean OPN levels were higher in patients compared to healthy controls...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620343/international-differences-in-multiple-sclerosis-health-outcomes-and-associated-factors-in-a-cross-sectional-survey
#18
Grace D Reilly, Awng Shar Mahkawnghta, Pia L Jelinek, Alysha M De Livera, Tracey J Weiland, Chelsea R Brown, Keryn L Taylor, Sandra L Neate, George A Jelinek, Claudia H Marck
Multiple sclerosis (MS) is a major cause of disability and poor quality of life (QOL). Previous studies have shown differences in MS health outcomes between countries. This study aimed to examine the associations between international regions and health outcomes in people with MS. Self-reported data were taken from the Health Outcomes and Lifestyle In a Sample of people with Multiple Sclerosis online survey collected in 2012. The 2,401 participants from 37 countries were categorized into three regions: Australasia, Europe, and North America...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620342/challenges-for-service-robots-requirements-of-elderly-adults-with-cognitive-impairments
#19
Agnieszka Korchut, Sebastian Szklener, Carla Abdelnour, Natalia Tantinya, Joan Hernández-Farigola, Joan Carles Ribes, Urszula Skrobas, Katarzyna Grabowska-Aleksandrowicz, Dorota Szczęśniak-Stańczyk, Konrad Rejdak
OBJECTIVE: We focused on identifying the requirements and needs of people suffering from Alzheimer disease and early dementia stages with relation to robotic assistants. METHODS: Based on focus groups performed in two centers (Poland and Spain), we created surveys for medical staff, patients, and caregivers, including: functional requirements; human-robot interaction, the design of the robotic assistant and user acceptance aspects. Using Likert scale and analysis made on the basis of the frequency of survey responses, we identified users' needs as high, medium, and low priority...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28620341/the-intersection-between-ocular-and-manual-motor-control-eye-hand-coordination-in-acquired-brain-injury
#20
REVIEW
John-Ross Rizzo, Maryam Hosseini, Eric A Wong, Wayne E Mackey, James K Fung, Edmond Ahdoot, Janet C Rucker, Preeti Raghavan, Michael S Landy, Todd E Hudson
Acute and chronic disease processes that lead to cerebral injury can often be clinically challenging diagnostically, prognostically, and therapeutically. Neurodegenerative processes are one such elusive diagnostic group, given their often diffuse and indolent nature, creating difficulties in pinpointing specific structural abnormalities that relate to functional limitations. A number of studies in recent years have focused on eye-hand coordination (EHC) in the setting of acquired brain injury (ABI), highlighting the important set of interconnected functions of the eye and hand and their relevance in neurological conditions...
2017: Frontiers in Neurology
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