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Functional electric stimulation

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https://www.readbyqxmd.com/read/28633534/neuromuscular-electrical-stimulation-improves-exercise-tolerance-in-patients-with-advanced-heart-failure-on-continuous-intravenous-inotropic-support-use-randomized-controlled-trial
#1
Patrícia Forestieri, Douglas W Bolzan, Vinícius B Santos, Rita Simone Lopes Moreira, Dirceu Rodrigues de Almeida, Renata Trimer, Flávio de Souza Brito, Audrey Borghi-Silva, Antonio Carlos de Camargo Carvalho, Ross Arena, Walter J Gomes, Solange Guizilini
OBJECTIVE: To evaluate the impact of a short-term neuromuscular electrical stimulation program on exercise tolerance in hospitalized patients with advanced heart failure who have suffered an acute decompensation and are under continuous intravenous inotropic support. DESIGN: A randomized controlled study. SUBJECTS: Initially, 195 patients hospitalized for decompensated heart failure were recruited, but 70 were randomized. INTERVENTION: Patients were randomized into two groups: control group subject to the usual care ( n = 35); neuromuscular electrical stimulation group ( n = 35) received daily training sessions to both lower extremities for around two weeks...
June 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28630920/bioinspired-shape-memory-graphene-film-with-tunable-wettability
#2
Jie Wang, Lingyu Sun, Minhan Zou, Wei Gao, Cihui Liu, Luoran Shang, Zhongze Gu, Yuanjin Zhao
Functional materials with specific surface wettability play an important role in a wide variety of areas. Inspired by nature's Nepenthes pitcher plant, we present a novel slippery film with tunable wettability based on a shape-memory graphene sponge. The porous graphene sponge coated with shape-memory polymer was used to lock in inert lubricants and construct slippery surfaces to repel different liquids. The superelasticity and high strength, together with good electrical conductivity, of the graphene sponge imparted the graphene/polymer hybrid films with fast recoverable shape-memory properties...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28630635/effect-of-abnormal-savda-munziq-a-traditional-uighur-herbal-medicine-on-pulmonary-function-and-aquaporins-of-copd-rat-model-with-abnormal-savda-syndrome
#3
Gao Zhen, Halmurat Upur, Wang Jing, Jing Jing, Li Zheng, Xu Dan, Li Fengsen
OBJECTIVE: To investigate the effect of abnormal savda munziq (ASM) on the pulmonary function and expression of lung-specific aquaporins in the rat model of chronic obstructive pulmonary disease with abnormal savda syndrome (ASSCOPD). METHODS: Eighty male rats were randomized into ASSCOPD, COPD, and control groups. ASSCOPD was further categorized into ASM and non-ASM groups. COPD model was established by combining fumigation with airway instillation of elastase; ASSCOPD model was developed based on COPD by induction with dry cold diet, cold dry environment, and plantar electric stimulation...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28629852/bioelectronic-block-of-paravertebral-sympathetic-nerves-mitigates-post-myocardial-infarction-ventricular-arrhythmias
#4
Ray W Chui, Una Buckley, Pradeep S Rajendran, Tina Vrabec, Kalyanam Shivkumar, Jeffrey L Ardell
BACKGROUND: Autonomic dysfunction contributes to induction of ventricular tachyarrhythmia (VT). OBJECTIVE: To determine the efficacy of charge-balanced direct current (CBDC), applied to the T1-T2 segment of the paravertebral sympathetic chain, on VT inducibility post-myocardial infarction (MI). METHODS: In a porcine model, CBDC was applied in acute animals (n=7) to optimize stimulation parameters for sympathetic blockade and in chronic MI animals (n=7) to evaluate the potential for VTs...
June 16, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28629024/electrospun-silk-fibroin-scaffolds-coated-with-reduced-graphene-promote-neurite-outgrowth-of-pc-12-cells-under-electrical-stimulation
#5
Salvador Aznar-Cervantes, Ana Pagán, Jose G Martínez, Antonia Bernabeu-Esclapez, Toribio F Otero, Luis Meseguer-Olmo, Juan I Paredes, Jose L Cenis
Novel approaches to neural research require biocompatible materials capable to act as electrode structures or scaffolds for tissue engineering in order to stimulate or restore the functionality of damaged tissues. This work offers promising results that indicate the potential use of electrospun silk fibroin (SF) scaffolds coated with reduced graphene oxide (rGO) in this sense. The coated material becomes conductor and electroactive. A complete characterisation of SF/rGO scaffolds is provided in terms of electrochemistry, mechanical behaviour and chemical conformation of fibroin...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28628551/a-clinical-framework-for-functional-recovery-in-a-person-with-chronic-traumatic-brain-injury-a-case-study
#6
Karen McCain, Staci Shearin
BACKGROUND AND PURPOSE: This case study describes a task-specific training program for gait walking and functional recovery in a young man with severe chronic traumatic brain injury. CASE DESCRIPTION: The individual was a 26-year-old man 4 years post-traumatic brain injury with severe motor impairments who had not walked outside of therapy since his injury. He had received extensive gait training prior to initiation of services. His goal was to recover the ability to walk...
July 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28625487/distinct-feedforward-and-feedback-effects-of-microstimulation-in-visual-cortex-reveal-neural-mechanisms-of-texture-segregation
#7
P Christiaan Klink, Bruno Dagnino, Marie-Alice Gariel-Mathis, Pieter R Roelfsema
The visual cortex is hierarchically organized, with low-level areas coding for simple features and higher areas for complex ones. Feedforward and feedback connections propagate information between areas in opposite directions, but their functional roles are only partially understood. We used electrical microstimulation to perturb the propagation of neuronal activity between areas V1 and V4 in monkeys performing a texture-segregation task. In both areas, microstimulation locally caused a brief phase of excitation, followed by inhibition...
June 9, 2017: Neuron
https://www.readbyqxmd.com/read/28622706/electrical-stimulation-of-microengineered-skeletal-muscle-tissue-effect-of-stimulus-parameters-on-myotube-contractility-and-maturation
#8
Ramin Banan Sadeghian, Majid Ebrahimi, Sahar Salehi
Skeletal muscle tissues engineered in vitro are aneural, short in number of fibers required to function properly, and degenerate rapidly. Electrical stimulation has been widely used to compensate for such lack of neural activity, yet the relationship between the stimulation parameters and the tissue response is subject of debate. Here we study the effect of overnight electrical stimulation (training) on the contractility and maturity of aligned C2C12 myotubes developed on micropatterned gelatin methacryloyl (GelMA) substrates...
June 16, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28622331/in-silico-assessment-of-genetic-variation-in-kcna5-reveals-multiple-mechanisms-of-human-atrial-arrhythmogenesis
#9
Michael A Colman, Haibo Ni, Bo Liang, Nicole Schmitt, Henggui Zhang
A recent experimental study investigating patients with lone atrial fibrillation identified six novel mutations in the KCNA5 gene. The mutants exhibited both gain- and loss-of-function of the atrial specific ultra-rapid delayed rectifier K+ current, IKur. The aim of this study is to elucidate and quantify the functional impact of these KCNA5 mutations on atrial electrical activity. A multi-scale model of the human atria was updated to incorporate detailed experimental data on IKur from both wild-type and mutants...
June 16, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28621488/effects-of-intradialytic-neuromuscular-electrical-stimulation-on-strength-and-muscle-architecture-in-patients-with-chronic-kidney-failure-randomized-clinical-trial
#10
Jociane Schardong, Thiago Dipp, Camila Bassani Bozzeto, Marília Godoy da Silva, Gabriela Leivas Baldissera, Raíssa de Castro Ribeiro, Bruna Pan Valdemarca, Alexandre Severo do Pinho, Graciele Sbruzzi, Rodrigo Della Méa Plentz
This study aimed to evaluate the effects of neuromuscular electrical stimulation (NMES) on muscle strength and architecture, functional capacity, and endothelial function in patients with chronic kidney failure (CKF) on hemodialysis (HD). Twenty-one patients with CKF on HD were randomized into a control group (CG; n = 10) and neuromuscular electrical stimulation group (NMESG; n = 11) who received NMES in the quadriceps muscle for 8 weeks, 3 times/week (20-34 min) during HD sessions. The muscle strength of the lower limbs was evaluated by dynamometry and sit-and-stand test (SST); muscle architecture through ultrasonography; functional capacity by the distance covered in a 6-min walk test and the endothelial function by flow-mediated dilatation technique of the brachial artery...
June 16, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28620284/electrophysiological-measurements-of-peripheral-vestibular-function-a-review-of-electrovestibulography
#11
REVIEW
Daniel J Brown, Christopher J Pastras, Ian S Curthoys
Electrocochleography (EcochG), incorporating the Cochlear Microphonic (CM), the Summating Potential (SP), and the cochlear Compound Action Potential (CAP), has been used to study cochlear function in humans and experimental animals since the 1930s, providing a simple objective tool to assess both hair cell (HC) and nerve sensitivity. The vestibular equivalent of ECochG, termed here Electrovestibulography (EVestG), incorporates responses of the vestibular HCs and nerve. Few research groups have utilized EVestG to study vestibular function...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28620055/the-effects-of-rsr13-on-microvascular-po2-kinetics-and-muscle-contractile-performance-in-the-rat-arterial-ligation-model-of-peripheral-arterial-disease
#12
Aiko Watanabe, David C Poole, Yutaka Kano
Exercise intolerance and claudication are symptomatic of peripheral arterial disease. There is a close relationship between muscle O2 delivery, microvascular oxygen partial pressure (PmvO2) and contractile performance. We therefore hypothesized that a reduction of hemoglobin-oxygen affinity via RSR13 would maintain a higher PmvO2 and enhance blood-muscle O2 transport and contractile function. In male Wistar rats we created hindlimb ischemia via right side iliac artery ligation (AL). The contralateral (left) muscle served as control (CONT)...
June 15, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28619655/comparison-of-the-spatial-resolution-of-source-imaging-techniques-in-high-density-eeg-and-meg
#13
T Hedrich, G Pellegrino, E Kobayashi, J M Lina, C Grova
BACKGROUND: The present study aims at evaluating and comparing electrical and magnetic distributed source imaging methods applied to high-density Electroencephalography (hdEEG) and Magnetoencephalography (MEG) data. We used resolution matrices to characterize spatial resolution properties of Minimum Norm Estimate (MNE), dynamic Statistical Parametric Mapping (dSPM), standardized Low-Resolution Electromagnetic Tomography (sLORETA) and coherent Maximum Entropy on the Mean (cMEM, an entropy-based technique)...
June 12, 2017: NeuroImage
https://www.readbyqxmd.com/read/28619043/effect-of-transcutaneous-electrical-stimulation-treatment-on-lower-urinary-tract-symptoms-after-class-iii-radical-hysterectomy-in-cervical-cancer-patients-study-protocol-for-a-multicentre-randomized-controlled-trial
#14
Xiu-Li Sun, Hai-Bo Wang, Zhi-Qi Wang, Ting-Ting Cao, Xin Yang, Jing-Song Han, Yang-Feng Wu, Kathleen H Reilly, Jian-Liu Wang
BACKGROUND: Class III radical hysterectomy (RH III)_plus pelvic lymphadenectomy is the standard surgery for early stage cervical cancer (CC) patients, the 5 year survival rate is about 90%, but pelvic floor disorders especially bladder dysfunction are common due to damaged vessels and nerve fibers following surgery. Transcutaneous electrical stimulation (TENS) treatment has been used to treat bladder disorders for many years, but its effect on cervical cancer patients, the best treatment time point and stimulated protocol, had never been assessed...
June 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28617862/evaluating-age-related-change-in-lip-somatosensation-using-somatosensory-evoked-magnetic-fields
#15
Hiroki Hihara, Hiroyasu Kanetaka, Akitake Kanno, Satoko Koeda, Nobukazu Nakasato, Ryuta Kawashima, Keiichi Sasaki
Somatosensory evoked fields (SEFs) to electrical stimulation on the right and left sides of the lower lip were measured using magnetoencephalography and compared in the bilateral hemispheres of 31 healthy normal young and 29 healthy normal elderly subjects to evaluate age-related change in lip somatosensation. The initial peak of the response around 13 ms, designated as N13m, and the second peak of the response, designated as P21m, were investigated. The N13m response, which was detected in 22 of 62 hemispheres in young adults and 37 of 58 hemispheres in elderly adults, showed significantly prolonged latency and increased equivalent current dipole (ECD) moment in the elderly adults...
2017: PloS One
https://www.readbyqxmd.com/read/28617576/ex-vivo-measurement-of-electrically-evoked-dopamine-release-in-zebrafish-whole-brain
#16
Mimi Shin, Thomas M Field, Chase S Stucky, Mia N Furgurson, Michael A Johnson
Zebrafish (Danio rerio) have recently emerged as useful model organism for the study of neuronal function. Here, fast-scan cyclic voltammetry at carbon-fiber microelectrodes (FSCV) was used to measure locally-evoked dopamine release and uptake in zebrafish whole brain preparations and results were compared with those obtained from brain slices. Evoked dopamine release ([DA]max) was similar in whole brain and sagittal brain slice preparations (0.49 ± 0.13 µM in whole brain and 0.59 ± 0.28 µM in brain slices)...
June 15, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28615966/acute-physiological-and-electrical-accentuation-of-vagal-tone-has-no-effect-on-pain-or-gastrointestinal-motility-in-chronic-pancreatitis
#17
Jacob Juel, Christina Brock, Søren S Olesen, Adnan Madzak, Adam D Farmer, Qasim Aziz, Jens B Frøkjær, Asbjørn Mohr Drewes
BACKGROUND: The effective management of pain in chronic pancreatitis (CP) remains a therapeutic challenge. Analgesic drugs, such as opioids, and the underlying pathology can impair gut function. The autonomic nervous system influences hormone secretion and gut motility. In healthy volunteers, electrical (using noninvasive transcutaneous vagal nerve stimulation [t-VNS]) and physiological (using deep slow breathing [DSB]) modulation of parasympathetic tone results in pain attenuation and enhanced gut motility...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28615244/stimulation-of-the-pelvic-nerve-increases-bladder-capacity-in-the-prostaglandin-e2-rat-model-of-overactive-bladder
#18
Christopher L Langdale, James A Hokanson, Arun Sridhar, Warren M Grill
Overactive bladder (OAB) syndrome is a highly prevalent condition that may lead to medical complications and decreased quality of life. Emerging therapies focusing on selective electrical stimulation of peripheral nerves associated with lower urinary tract (LUT) function may provide improved efficacy and reduced side effects compared to sacral neuromodulation for the treatment of OAB symptoms. Prior studies investigating the effects of pelvic nerve (PelN) stimulation on LUT function were focused on promoting bladder contractions, and it is unclear if selective stimulation of the PelN would be beneficial for the treatment of OAB...
June 14, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28614457/immediate-effects-of-tongue-trills-associated-with-transcutaneous-electrical-nerve-stimulation-tens
#19
Eliana Maria Gradim Fabron, Andressa Schweitzer Petrini, Vanessa de Moraes Cardoso, João Carlos Torgal Batista, Suely Mayumi Motonaga, Viviane Cristina de Castro Marino
Purpose: To investigate vocal quality variability after applying tongue trills associated with transcutaneous electrical nerve stimulation (TENS) on the larynx of women with normal laryngeal function. Additionally, to verify the effect of this technique over time on voice quality. Methods: Participants were 40 women (average 23.4 years) without vocal complaints. The procedure involved tongue trills with or without TENS for 3 minutes, rest and repeating the technique for another 2 minutes...
June 8, 2017: CoDAS
https://www.readbyqxmd.com/read/28612678/orthotic-and-therapeutic-effect-of-functional-electrical-stimulation-on-fatigue-induced-gait-patterns-in-people-with-multiple-sclerosis
#20
Christopher J Barr, Benjamin L Patritti, Rebecca Bowes, Maria Crotty, James V McLoughlin
PURPOSE: To assess the orthotic and therapeutic effects of prolonged use of functional electrical stimulation (FES) on fatigue induced gait patterns in people with Multiple Sclerosis (MS). METHOD: Thirteen people with MS completed 3D gait analysis with FES off and on, before and after a fatiguing 6-minute walk, at baseline and after 8 weeks of use of FES. RESULTS: Eleven participants completed all testing. An orthotic effect on gait was not evident on first use of FES...
August 2017: Disability and Rehabilitation. Assistive Technology
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