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Frontiers in Neurology

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https://www.readbyqxmd.com/read/29449828/understanding-spreading-depression-from-headache-to-sudden-unexpected-death
#1
REVIEW
Olga Cozzolino, Maria Marchese, Francesco Trovato, Enrico Pracucci, Gian Michele Ratto, Maria Gabriella Buzzi, Federico Sicca, Filippo M Santorelli
Spreading depression (SD) is a neurophysiological phenomenon characterized by abrupt changes in intracellular ion gradients and sustained depolarization of neurons. It leads to loss of electrical activity, changes in the synaptic architecture, and an altered vascular response. Although SD is often described as a unique phenomenon with homogeneous characteristics, it may be strongly affected by the particular triggering event and by genetic background. Furthermore, SD may contribute differently to the pathogenesis of widely heterogeneous clinical conditions...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29449827/sun-exposure-across-the-life-course-significantly-modulates-early-multiple-sclerosis-clinical-course
#2
Steve Simpson, Ingrid van der Mei, Robyn M Lucas, Anne-Louise Ponsonby, Simon Broadley, Leigh Blizzard, Bruce Taylor
Background: Low vitamin D and/or sun exposure have been associated with increased risk of multiple sclerosis (MS) onset. However, comparatively, few studies have prospectively examined associations between these factors and clinical course. Objectives: To evaluate the association of sun exposure parameters and vitamin D levels with conversion to MS and relapse risk in a prospectively monitored cohort of 145 participants followed after a first demyelinating event up to 5-year review (AusLong Study)...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29449826/a-critical-examination-of-subgroup-analyses-the-national-acute-spinal-cord-injury-studies-and-beyond
#3
REVIEW
Shannon Hextrum, Stephanie Bennett
The use of high-dose methylprednisolone for acute spinal cord injury continues to be a topic of debate. This controversy largely stems from fundamental issues in statistical interpretation of trial data, most notably subgroup analyses. The purpose of this review is to discuss important examples of improper subgroup analysis and encourage better practices in future research.
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29445354/effects-of-acupuncture-on-the-recovery-outcomes-of-stroke-survivors-with-shoulder-pain-a-systematic-review
#4
Janita Pak Chun Chau, Suzanne Hoi Shan Lo, Xingfeng Yu, Kai Chow Choi, Alexander Yuk Lun Lau, Justin Che Yuen Wu, Vivian Wing Yan Lee, William Hoi Ngai Cheung, Jessica Yuet Ling Ching, David R Thompson
Background: Poststroke shoulder pain limits stroke survivors' physical functioning, impairs their ability to perform daily activities, and compromises their quality of life. The use of acupuncture to manage shoulder pain after a stroke is believed to free the blockage of energy flow and produce analgesic effects, but the evidence is unclear. We therefore conducted a systematic review to summarize the current evidence on the effects of acupuncture on the recovery outcomes of stroke survivors with shoulder pain...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29441041/altered-brain-functional-connectome-in-migraine-with-and-without-restless-legs-syndrome-a-resting-state-functional-mri-study
#5
Fu-Chi Yang, Kun-Hsien Chou, Ai-Ling Hsu, Jong-Ling Fuh, Jiing-Feng Lirng, Hung-Wen Kao, Ching-Po Lin, Shuu-Jiun Wang
Background: Migraine is frequently comorbid with restless legs syndrome (RLS), both displaying functional connectivity (FC) alterations in multiple brain networks, although the neurological basis of this association is unknown. Methods: We performed resting-state functional magnetic resonance imaging and network-wise analysis of FC in migraine patients with and without RLS and healthy controls (CRL). Network-based statistics (NBS) and composite FC matrix analyses were performed to identify the patterns of FC changes...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29441040/intraoperative-photodynamic-diagnosis-using-talaporfin-sodium-simultaneously-applied-for-photodynamic-therapy-against-malignant-glioma-a-prospective-clinical-study
#6
Kazuhide Shimizu, Masayuki Nitta, Takashi Komori, Takashi Maruyama, Takayuki Yasuda, Yu Fujii, Ken Masamune, Takakazu Kawamata, Taketoshi Maehara, Yoshihiro Muragaki
Objective: The goal of this study was to demonstrate the feasibility of intraoperative photodynamic diagnosis (PDD) of malignant glioma using the fluorescence from talaporfin sodium (TS), which is used simultaneously for photodynamic therapy (PDT). Methods: Patients with suspected primary malignant glioma who were eligible for surgical removal of the tumor and PDT with TS were enrolled in this prospective study. Tissue samples were obtained from the contrast-enhanced (CE) region and from the surrounding non-contrast-enhanced (NCE) marginal tissue at the boundary between the tumor and normal tissue...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29441039/metastatic-burned-out-seminoma-causing-neurological-paraneoplastic-syndrome-not-quite-burned-out
#7
Yuval Freifeld, Payal Kapur, Ritika Chitkara, Francesca Lee, Pravin Khemani, Aditya Bagrodia
A 44-year-old man presented with cerebellar ataxia and limbic encephalitis and was ultimately diagnosed with metastatic germ cell neoplasm resulting from a "burned out" primary testicular tumor. The patient had progressive ataxia, leading to a thorough investigation for infectious, autoimmune, metabolic, and malignant causes of acquired cerebellar ataxia that revealed no significant findings. Testicular sonography demonstrated a possible right testicular lesion that was not confirmed on radical inguinal orchiectomy...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29434571/knowledge-about-essential-tremor-a-study-of-essential-tremor-families
#8
Ashley D Cristal, Karen P Chen, Nora Cristina Hernandez, Pam Factor-Litvak, Lorraine N Clark, Ruth Ottman, Elan D Louis
Background: Essential tremor (ET) is among the most common neurological diseases and it often runs in families. How knowledgeable ET patients and their families are about their disease has been the subject of surprisingly little scholarship. Methods: To fill this gap in knowledge, we administered a comprehensive 32-item survey (i.e., questions about etiology, pathophysiology, symptoms and signs, natural history, and treatments) to 427 participants, including 76 ET probands, 74 affected relatives (AFRs), 238 unaffected relatives, and 39 spouses of unaffected relatives, all of whom were participating in two ET family studies...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29434570/perspectives-on-how-human-simultaneous-multi-modal-imaging-adds-directionality-to-spread-models-of-alzheimer-s-disease
#9
Julia Neitzel, Rachel Nuttall, Christian Sorg
Previous animal research suggests that the spread of pathological agents in Alzheimer's disease (AD) follows the direction of signaling pathways. Specifically, tau pathology has been suggested to propagate in an infection-like mode along axons, from transentorhinal cortices to medial temporal lobe cortices and consequently to other cortical regions, while amyloid-beta (Aβ) pathology seems to spread in an activity-dependent manner among and from isocortical regions into limbic and then subcortical regions. These directed connectivity-based spread models, however, have not been tested directly in AD patients due to the lack of an in vivo method to identify directed connectivity in humans...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29434569/cranio-caudal-kinematic-turn-signature-assessed-with-inertial-systems-as-a-marker-of-mobility-deficits-in-parkinson-s-disease
#10
Karina Lebel, Christian Duval, Hung Phuc Nguyen, Réjean Plamondon, Patrick Boissy
Background: Turning is a challenging mobility task requiring proper planning, coordination, and postural stability to be executed efficiently. Turn deficits can impair mobility and lead to falls in patients with neurodegenerative disease, such as Parkinson's disease (PD). It was previously shown that the cranio-caudal sequence involved during a turn (i.e., motion is initiated by the head, followed by the trunk) exhibits a signature that can be captured using an inertial system and analyzed through the Kinematics Theory...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29434568/restless-legs-syndrome-willis-ekbom-disease-is-prevalent-in-working-nurses-but-seems-not-to-be-associated-with-shift-work-schedules
#11
Siri Waage, Ståle Pallesen, Bente Elisabeth Moen, Bjørn Bjorvatn
Insomnia and excessive sleepiness are among the most commonly reported sleep problems related to shift work. Sleep-related movement disorders have, however, received far less attention in relation to such work schedules. The objective of this study was to investigate the association between different shift work schedules and the prevalence of Restless legs syndrome/Willis-Ekbom disease (RLS/WED) in a large sample of Norwegian nurses. Our hypothesis was that shift working nurses would report higher prevalence of RLS/WED compared to day workers...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29434567/turn-around-freezing-community-living-turning-behavior-in-people-with-parkinson-s-disease
#12
Martina Mancini, Aner Weiss, Talia Herman, Jeffrey M Hausdorff
Difficulty in turning while walking is common among patients with Parkinson's disease (PD). This difficulty often leads to significant disability, falls, and loss of function; moreover, turning is a common trigger for freezing of gait (FoG). We hypothesized that the quantity and quality of turning mobility while walking during daily life would be different among subjects with PD with and without FoG. Here, we investigated, for the first time, the turning quality during daily life as it relates to FoG in people with PD using a single inertial sensor...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29434566/assessment-of-platelet-function-in-traumatic-brain-injury-a-retrospective-observational-study-in-the-neuro-critical-care-setting
#13
Caroline Lindblad, Eric Peter Thelin, Michael Nekludov, Arvid Frostell, David W Nelson, Mikael Svensson, Bo-Michael Bellander
Background: Despite seemingly functional coagulation, hemorrhagic lesion progression is a common and devastating condition following traumatic brain injury (TBI), stressing the need for new diagnostic techniques. Multiple electrode aggregometry (MEA) measures platelet function and could aid in coagulopathy assessment following TBI. The aims of this study were to evaluate MEA temporal dynamics, influence of concomitant therapy, and its capabilities to predict lesion progression and clinical outcome in a TBI cohort...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29434565/semi-automated-analysis-of-diaphragmatic-motion-with-dynamic-magnetic-resonance-imaging-in-healthy-controls-and-non-ambulant-subjects-with-duchenne-muscular-dystrophy
#14
Courtney A Bishop, Valeria Ricotti, Christopher D J Sinclair, Matthew R B Evans, Jordan W Butler, Jasper M Morrow, Michael G Hanna, Paul M Matthews, Tarek A Yousry, Francesco Muntoni, John S Thornton, Rexford D Newbould, Robert L Janiczek
Subjects with Duchenne Muscular Dystrophy (DMD) suffer from progressive muscle damage leading to diaphragmatic weakness that ultimately requires ventilation. Emerging treatments have generated interest in better characterizing the natural history of respiratory impairment in DMD and responses to therapy. Dynamic (cine) Magnetic Resonance Imaging (MRI) may provide a more sensitive measure of diaphragm function in DMD than the commonly used spirometry. This study presents an analysis pipeline for measuring parameters of diaphragmatic motion from dynamic MRI and its application to investigate MRI measures of respiratory function in both healthy controls and non-ambulant DMD boys...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29422883/detecting-cortical-spreading-depolarization-with-full-band-scalp-electroencephalography-an-illusion
#15
Jeannette Hofmeijer, C R van Kaam, Babette van de Werff, Sarah E Vermeer, Marleen C Tjepkema-Cloostermans, Michel J A M van Putten
Introduction: There is strong evidence suggesting detrimental effects of cortical spreading depolarization (CSD) in patients with acute ischemic stroke and severe traumatic brain injury. Previous studies implicated scalp electroencephalography (EEG) features to be correlates of CSD based on retrospective analysis of EEG epochs after having detected "CSD" in time aligned electrocorticography. We studied the feasibility of CSD detection in a prospective cohort study with continuous EEG in 18 patients with acute ischemic stroke and 18 with acute severe traumatic brain injury...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29422882/disrupted-brain-intrinsic-networks-and-executive-dysfunction-in-cirrhotic-patients-without-overt-hepatic-encephalopathy
#16
Zhe-Ting Yang, Hua-Jun Chen, Qiu-Feng Chen, Hailong Lin
Objective: Patients with cirrhosis often exhibit cognitive deficits, particularly executive dysfunction, which is considered a predictor of overt hepatic encephalopathy (OHE). We examined brain intrinsic networks associated with executive function to investigate the neural basis of this cognitive deficiency in cirrhosis. Methods: Resting-state functional MRI data were acquired from 20 cirrhotic patients and 18 healthy controls. Seed-based correlation analysis was used to identify the three well-known networks associated with executive function, including executive control (ECN), default mode (DMN), and salience (SN) networks...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29422881/encouragement-induced-real-world-upper-limb-use-after-stroke-by-a-tracking-and-feedback-device-a-study-protocol-for-a-multi-center-assessor-blinded-randomized-controlled-trial
#17
Jeremia P O Held, Andreas R Luft, Janne M Veerbeek
Introduction: Retraining the paretic upper limb after stroke should be intense and specific to be effective. Hence, the best training is daily life use, which is often limited by motivation and effort. Tracking and feedback technology have the potential to encourage self-administered, context-specific training of upper limb use in the patients' home environment. The aim of this study is to investigate post-intervention and long-term effects of a wrist-worn activity tracking device providing multimodal feedback on daily arm use in hemiparetic subjects beyond 3 months post-stroke...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29416525/patient-specific-alterations-in-co2-cerebrovascular-responsiveness-in-acute-and-sub-acute-sports-related-concussion
#18
W Alan C Mutch, Michael J Ellis, Lawrence N Ryner, Patrick J McDonald, Marc P Morissette, Philip Pries, Marco Essig, David J Mikulis, James Duffin, Joseph A Fisher
Background: Preliminary studies suggest that sports-related concussion (SRC) is associated with alterations in cerebral blood flow (CBF) regulation. Here, we use advanced magnetic resonance imaging (MRI) techniques to measure CBF and cerebrovascular responsiveness (CVR) in individual SRC patients and healthy control subjects. Methods: 15 SRC patients (mean age = 16.3, range 14-20 years) and 27 healthy control subjects (mean age = 17.6, range 13-21 years) underwent anatomical MRI, pseudo-continuous arterial spin labeling (pCASL) MRI and model-based prospective end-tidal targeting (MPET) of CO2 during blood oxygenation level-dependent (BOLD) MRI...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29410649/microglia-and-cns-interleukin-1-beyond-immunological-concepts
#19
REVIEW
Xiaoyu Liu, Ning Quan
Activation of microglia and expression of the inflammatory cytokine interleukin-1 (IL-1) in the CNS have become almost synonymous with neuroinflammation. In numerous studies, increased CNS IL-1 expression and altered microglial morphology have been used as hallmarks of CNS inflammation. A central concept of how CNS IL-1 and microglia influence functions of the nervous system was derived from the notion initially generated in the peripheral immune system: IL-1 stimulates monocyte/macrophage (the peripheral counterparts of microglia) to amplify inflammation...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29410648/status-epilepticus-behavioral-and-electroencephalography-seizure-correlates-in-kainate-experimental-models
#20
REVIEW
Shaunik Sharma, Sreekanth Puttachary, Achala Thippeswamy, Anumantha G Kanthasamy, Thimmasettappa Thippeswamy
Various etiological factors, such as head injury, chemical intoxication, tumors, and gene mutation, can induce epileptogenesis. In animal models, status epilepticus (SE) triggers epileptogenesis. In humans, convulsive SE for >30 min can be a life-threatening medical emergency. The duration and severity of convulsive SE are highly variable in chemoconvulsant animal models. A continuous video-electroencephalography (EEG) recording, and/or diligent direct observation, facilitates quantification of exact duration of different stages of convulsive seizures (Racine stages 3-5) to determine the severity of SE...
2018: Frontiers in Neurology
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