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Muscle & Nerve

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https://www.readbyqxmd.com/read/28093786/reply-from-e0-formerly-known-as-ground-electrode
#1
LETTER
Lawrence R Robinson, Michael Christie, Sanjeev Nandedkar
No abstract text is available yet for this article.
January 17, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28093784/electrodiagnosis-of-reversible-conduction-failure-in-guillain-barr%C3%A3-syndrome
#2
Yee-Cheun Chan, Aubrey M Punzalan-Sotelo, Therimadasamy A Kannan, Nortina Shahrizaila, Thirugnanam Umapathi, Eunice J H Goh, Yuki Fukami, Einar Wilder-Smith, Nobuhiro Yuki
OBJECTIVE: We proposed electrodiagnostic criteria for early reversible conduction failure (ERCF) in axonal Guillain-Barré syndrome (GBS) and applied them to a cohort of GBS patients. METHODS: Serial nerve conduction studies (NCS) were retrospectively analyzed in 82 GBS patients from 3 centers. The criteria for the presence of ERCF in a nerve were i) 50% increase in amplitude of distal compound muscle action potentials or sensory nerve action potentials, or ii) resolution of proximal motor conduction block with accompanying decrease in distal latencies or compound muscle action potential duration or increase in conduction velocities...
January 17, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28093782/relapsing-polychondritis-as-an-unusual-cause-of-multiple-cranial-nerve-palsies-a-case-report
#3
Fatme Seval Ismail, Björn Enzi, Christian Boy, Annika Kowoll, Jens Eyding, Uwe Schlegel
No abstract text is available yet for this article.
January 17, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28093780/subacute-demyelinating-polyradiculoneuropathy-complicating-epstein-barr-virus-infection-in-gata2-haploinsufficiency
#4
Mohamed Kazamel, Christopher J Klein, Eduardo E Benarroch, Mrinal M Patnaik, Jennifer A Tracy
INTRODUCTION: Autosomal dominant haploinsufficiency of GATA2 causes monocytopenia and natural killer cell lymphopenia, resulting in predisposition to mycobacterial, fungal, and viral infections. METHODS: We report clinical, serologic, electrophysiologic, and pathologic evaluation of a 29-year-old woman with GATA2 haploinsufficiency and active Epstein-Barr virus (EBV) infection complicated by subacute painful neuropathy. RESULTS: Nerve conduction and electromyography studies showed predominantly demyelinating sensorimotor polyradiculoneuropathy...
January 17, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28093778/brainstem-reflex-excitability-changes-in-patients-with-als
#5
Bülent Cengiz, Merve Bahar Ercan, Mustafa İskender, Hidayet Reha Kuruoğlu
Objective We explored brainstem reflex excitability changes, blink reflex recovery cycles (BRRC), and masseter inhibitory reflexes (MIR) in patients with ALS. Methods Fourteen ALS patients and 14 healthy control subjects were recruited. The BRRC was examined at interstimulus intervals (ISI) of 100, 200, 300, 400, 500, and 600 ms. The latencies and durations of silent period 1 (SP1) and silent period 2 (SP2) of the MIR were measured. Results Decreased R2 area suppression was prominent in the ALS group at ISIs of 200, 300, and 400 ms (P<0...
January 17, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28093776/a-message-from-the-true-ground
#6
LETTER
Devon I Rubin, John Kincaid
No abstract text is available yet for this article.
January 17, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28085204/exercise-in-myasthenia-gravis-a-feasibility-study-of-aerobic-and-resistance-training
#7
Martin Amadeus Rahbek, Erik Elgaard Mikkelsen, Kristian Overgaard, Lotte Vinge, Henning Andersen, Ulrik Dalgas
INTRODUCTION: It has not been established whether progressive resistance training (PRT) and aerobic training (AT) are feasible and efficient in myasthenia gravis (MG). METHODS: Fifteen subjects with generalized MG (MGFA II - IV) were randomly assigned to 20 training sessions during 8 weeks of either progressive resistance training or aerobic training. Feasibility was evaluated based on adherence, drop-out rate, adverse events, and Quantitative MG score. RESULTS: Twelve subjects (MGFA II, n=11; MGFA III, n=1) completed the intervention with a mean adherence of 95% ± 8...
January 13, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28085193/changes-in-spatiotemporal-gait-parameters-following-ivig-treatment-for-cidp
#8
Mary L Vo, Russell L Chin, Caroline Miranda, Norman Latov
INTRODUCTION: Gait impairment is a common presenting symptom in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). However, gait parameters have not previously been evaluated in detail as potential independent outcome measures. METHODS: We prospectively measured changes in spatiotemporal gait parameters in 20 patients with CIDP, at baseline and following treatment with intravenous immunoglobulin (IVIG), using GAITRite, a computerized walkway system with embedded sensors...
January 13, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28076900/childhood-autoimmune-necrotizing-myopathy-with-anti-signal-recognition-particle-antibodies
#9
Yawen Zhao, Xiujuan Liu, Wei Zhang, Yun Yuan
INTRODUCTION: The aim of this study was to describe the therapeutic effects of immunomodulatory therapy in 3 patients with childhood autoimmune necrotizing myopathy with anti-signal recognition particle antibodies. METHODS: Before treatment, data on clinical features, muscle pathology, and thigh MRIs were obtained. After definitive diagnoses, all 3 patients were treated with intravenous immunoglobulin and corticosteroids, and thigh MRIs were performed. RESULTS: Clinical improvements were associated with declines in serum creatine kinase levels...
January 11, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28076880/repeatability-consistency-and-accuracy-of-hand-held-dynamometry-with-and-without-fixation-for-measuring-ankle-plantarflexion-strength-in-healthy-adolescents-and-adults
#10
Phillip R Davis, Marnee J Mckay, Jennifer N Baldwin, Joshua Burns, Davide Pareyson, Kristy J Rose
INTRODUCTION: Hand-held dynamometry (HHD) is commonly used to measure ankle plantarflexion strength but has variable reliability measuring higher forces. Fixed HHD is suggested to improve reliability. We therefore compared the reliability, consistency, and accuracy of measuring plantarflexion strength. METHOD: Plantarflexion strength was measured in 25 healthy individuals with fixed HHD and HHD alone. Intraclass correlation coefficients (ICC2,2 ), standard error of measurement (SEM), minimal detectable change (MDC), and Spearman correlation coefficients were calculated to assess inter-trial repeatability, consistency, agreement, and accuracy...
January 11, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28073181/participation-restrictions-in-ambulatory-als-patients-physical-and-psychological-factors
#11
Annerieke C van Groenestijn, Carin D Schröder, Esther T Kruitwagen-van Reenen, Leonard H van den Berg, Johanna M A Visser-Meily
INTRODUCTION: The aim of this study was to assess the prevalence of participation restrictions in ambulatory patients with amyotrophic lateral sclerosis (ALS) and to identify physical and psychological contributory factors. METHODS: In this cross-sectional study, self-reported participation restrictions of 72 ambulatory ALS patients were assessed using the social health status dimension (SIPSOC) of the Sickness Impact Profile (SIP-68). Associations between SIPSOC and physical functioning, psychological factors, and demographic factors were analyzed using hierarchical regression analyses...
January 10, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28073156/paraparetic-guillain-barr%C3%A3-syndrome-non-demyelinating-reversible-conduction-failure-restricted-to-the-lower-limbs
#12
LETTER
José Gazulla, Isabel Benavente
No abstract text is available yet for this article.
January 10, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28073155/differential-effects-of-myostatin-deficiency-on-motor-and-sensory-axons
#13
Maria R Jones, Eric Villalón, Adam J Northcutt, Nigel A Calcutt, Michael L Garcia
INTRODUCTION: Deletion of myostatin in mice (MSTN(-/-) ) alters structural properties of peripheral axons. However, properties like axon diameter and myelin thickness were analyzed in mixed nerves, so it is unclear if loss of myostatin affects motor, sensory or both types of axons. METHODS: Using the MSTN(-/-) mouse model, we analyzed the effects of increasing the number of muscle fibers on axon diameter, myelin thickness, and internode length in motor and sensory axons...
January 10, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28073153/reminder-rmssd-and-sd1-are-identical-heart-rate-variability-metrics
#14
Anthony B Ciccone, Jacob A Siedlik, Jill M Wecht, Jake A Deckert, Nhuquynh D Nguyen, Joseph P Weir
Assessment of heart rate variability (HRV) is a common approach to examine cardiac autonomic nervous system modulation that has been employed in a variety of settings. Frequently, both the root mean square of successive differences (RMSSD) and SD1, which is a Poincaré plot component, have been used to quantify short term heart rate variability. It is not typically appreciated however, that RMSSD and SD1 are identical metrics of HRV. As a reminder to clinicians and researchers who use and study HRV, we show both empirically and mathematically that RMSSD and SD1 are identical metrics...
January 10, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28073145/does-partial-muscle-reinnervation-preserve-future-re-innervation-potential
#15
Jonathan Isaacs, Satya Mallu, Mary Shall, Gaurangkumar Patel, Pooja Shah, Shalin Shah, Mark A Feger, Gordon Graham, Nikhil Pasula
INTRODUCTION: Late revision nerve surgery for incomplete motor recovery due to partial reinnervation would improve muscle function only if all muscle fibers were protected from developing denervation atrophy. METHODS: Sixty immature Sprague-Dawley rats underwent the following tibial nerve manipulations (n=15/group): Group A, partial denervation (2/3 of nerve resected and remaining 1/3 crushed), revision repair at 8 months; Group B, partial denervation; Group C, complete denervation, immediate reconstruction; Group D, complete denervation, reconstruction at 8 months; Group E, control group...
January 10, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28073143/demyelinating-polyneuropathy-in-a-case-of-anti-lgi1-encephalitis
#16
Gemma Tumminelli, Carla Battisti, Chiara Cioni, Andrea Mignarri, Pasquale Annunziata, And Antonio Federico
No abstract text is available yet for this article.
January 10, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28066901/what-does-individual-strength-say-about-resistance-training-status
#17
Samuel L Buckner, J Grant Mouser, Matthew B Jessee, Scott J Dankel, Kevin T Mattocks, Jeremy P Loenneke
The point at which an individual becomes resistance "trained" is not well defined in the literature. Some studies have defined training status as having engaged in consistent resistance training activities for a given period of time, whereas others base inclusion criteria on strength levels alone, or levels of strength in combination with training age/time. If the primary focus of a study is to examine adaptations in individuals with high levels of strength, then it may be appropriate to exclude the individuals who do not meet strength requirements...
January 9, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28066895/anti-hmgcr-necrotizing-myopathy-masquerading-as-a-muscular-dystrophy-in-a-child
#18
Payam Mohassel, A Reghan Foley, Sandra Donkervoort, Pierre R Fequiere, Katherine Pak, Carsten G Bönnemann, Andrew L Mammen
INTRODUCTION: Immune-mediated necrotizing myopathies (IMNM) are characterized by progressive weakness, elevated serum creatine kinase levels, and necrotizing myopathic features on muscle biopsy. Presence of highly specific autoantibodies against signal recognition particle (SRP) or 3-hydroxy-3-methylglutaryl- coenzyme A reductase (HMGCR) can aid in recognition and confirmation of IMNMs. METHODS: We describe a boy with HMGCR-positive necrotizing myopathy and highlight the clinical features in this patient...
January 9, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28066894/so-many-submissions%C3%A2-so-little-space
#19
EDITORIAL
Zachary Simmons
No abstract text is available yet for this article.
January 9, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28063170/assessing-mnis-7ionis-and-international-neurologists-proficiency-in-an-fap-trial
#20
Peter J Dyck, John C Kincaid, P James B Dyck, Vinay Chaudhry, Namita A Goyal, Christina Alves, Hayet Salhi, Janice F Wiesman, Celine Labeyrie, Jessica Robinson-Papp, Márcio Cardoso, Matilde Laura, Katherine Ruzhansky, Andrea Cortese, Thomas H Brannagan, Julie Khoury, Sami Khella, Márcia Waddington-Cruz, João Ferreira, Annabel K Wang, Marcus V Pinto, Samar S Ayache, Merrill D Benson, John L Berk, Teresa Coelho, Michael Polydefkis, Peter Gorevic, David H Adams, Violaine Plante-Bordeneuve, Carol Whelan, Giampaolo Merlini, Stephen Heitner, Brian M Drachman, Isabel Conceição, Christopher J Klein, Morie A Gertz, Elizabeth J Ackermann, Steven G Hughes, Michelle L Mauermann, Rito Bergemann, Karen A Lodermeier, Jenny L Davies, Rickey E Carter, William J Litchy
INTRODUCTION: Polyneuropathy signs (Neuropathy Impairment Score, NIS), neurophysiologic tests (m+7Ionis ), disability, and health scores were assessed in baseline evaluations of 100 patients entered into an oligonucleotide familial amyloidotic polyneuropathy (FAP) trial. METHODS: We assessed: 1) Proficiency of grading neurologic signs and correlation with neurophysiologic tests, and 2) clinometric performance of mNIS+7Ionis and its subscores and correlation with disability and health scores...
January 7, 2017: Muscle & Nerve
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