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Electrical stimulators

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https://www.readbyqxmd.com/read/28934653/mixed-sulfate-reducing-bacteria-enriched-microbial-fuel-cells-for-the-treatment-of-wastewater-containing-copper
#1
Waheed Miran, Jiseon Jang, Mohsin Nawaz, Asif Shahzad, Sang Eun Jeong, Che Ok Jeon, Dae Sung Lee
Microbial fuel cells (MFCs) have been widely investigated for organic-based waste/substrate conversion to electricity. However, toxic compounds such as heavy metals are ubiquitous in organic waste and wastewater. In this work, a sulfate reducing bacteria (SRB)-enriched anode is used to study the impact of Cu(2+) on MFC performance. This study demonstrates that MFC performance is slightly enhanced at concentrations of up to 20 mg/L of Cu(2+), owing to the stimulating effect of metals on biological reactions...
September 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28933513/effect-of-transcutaneous-electrical-nerve-stimulation-for-pain-control-after-total-knee-arthroplasty-a-systematic-review-and-meta-analysis
#2
Yongjun Zhu, Yuxing Feng, Lihua Peng
INTRODUCTION: Transcutaneous electrical nerve stimulation is a possible adjunctive therapy to pharmacological treatment for controlling pain after total knee arthroplasty. However, the results are controversial. A systematic review and meta-analysis was conducted to explore the effect of transcutaneous electrical nerve stimulation on patients with total knee arthroplasty. METHODS: PubMed, Embase, Web of Science, EBSCO, and Cochrane Library databases were searched systematically...
September 21, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28933218/effects-of-human-es-derived-neural-stem-cell-transplantation-and-kindling-in-a-rat-model-of-traumatic-brain-injury
#3
Stefania Beretta, Kelly M Cunningham, Daniel L Haus, Eric M Gold, Harvey Perez, Luci López-Velázquez, Brian J Cummings
Traumatic brain injury (TBI) is one of the leading causes of death and disability in the population worldwide, with a broad spectrum of symptoms and disabilities. Posttraumatic hyperexcitability is one of the most common neurological disorders that affect people after a head injury. A reliable animal model of posttraumatic hyperexcitability induced by TBI which allows one to test effective treatment strategies is yet to be developed. To address these issues, in the present study, we tested human embryonic stem cell-derived neural stem cell (NSC) transplantation in an animal model of posttraumatic hyperexcitability in which the brain injury was produced in one hemisphere of immunodeficient athymic nude rats by controlled cortical impact, and spontaneous seizures were produced by repeated electrical stimulation (kindling) in the contralateral hemisphere...
July 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28933195/biophysical-stimuli-a-review-of-electrical-and-mechanical-stimulation-in-hyaline-cartilage
#4
Juan J Vaca-González, Johana M Guevara, Miguel A Moncayo, Hector Castro-Abril, Yoshie Hata, Diego A Garzón-Alvarado
Objective Hyaline cartilage degenerative pathologies induce morphologic and biomechanical changes resulting in cartilage tissue damage. In pursuit of therapeutic options, electrical and mechanical stimulation have been proposed for improving tissue engineering approaches for cartilage repair. The purpose of this review was to highlight the effect of electrical stimulation and mechanical stimuli in chondrocyte behavior. Design Different information sources and the MEDLINE database were systematically revised to summarize the different contributions for the past 40 years...
September 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28932245/electromagnetic-fields-for-the-regulation-of-neural-stem-cells
#5
REVIEW
Mengchu Cui, Hongfei Ge, Hengli Zhao, Yongjie Zou, Yujie Chen, Hua Feng
Localized magnetic fields (MFs) could easily penetrate the scalp, skull, and meninges, thus inducing an electrical current in both the central and peripheral nervous systems, which is primarily used in transcranial magnetic stimulation (TMS) for inducing specific effects on different regions or cells that play roles in various brain activities. Studies of repetitive transcranial magnetic stimulation (rTMS) have led to novel attractive therapeutic approaches. Neural stem cells (NSCs) in adult human brain are able to self-renew and possess multidifferential ability to maintain homeostasis and repair damage after acute central nervous system...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28932181/invasive-intraneural-interfaces-foreign-body-reaction-issues
#6
REVIEW
Fiorenza Lotti, Federico Ranieri, Gianluca Vadalà, Loredana Zollo, Giovanni Di Pino
Intraneural interfaces are stimulation/registration devices designed to couple the peripheral nervous system (PNS) with the environment. Over the last years, their use has increased in a wide range of applications, such as the control of a new generation of neural-interfaced prostheses. At present, the success of this technology is limited by an electrical impedance increase, due to an inflammatory response called foreign body reaction (FBR), which leads to the formation of a fibrotic tissue around the interface, eventually causing an inefficient transduction of the electrical signal...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28932132/central-sensitization-based-classification-for-temporomandibular-disorders-a-pathogenetic-hypothesis
#7
REVIEW
Annalisa Monaco, Ruggero Cattaneo, Maria Chiara Marci, Davide Pietropaoli, Eleonora Ortu
Dysregulation of Autonomic Nervous System (ANS) and central pain pathways in temporomandibular disorders (TMD) is a growing evidence. Authors include some forms of TMD among central sensitization syndromes (CSS), a group of pathologies characterized by central morphofunctional alterations. Central Sensitization Inventory (CSI) is useful for clinical diagnosis. Clinical examination and CSI cannot identify the central site(s) affected in these diseases. Ultralow frequency transcutaneous electrical nerve stimulation (ULFTENS) is extensively used in TMD and in dental clinical practice, because of its effects on descending pain modulation pathways...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
https://www.readbyqxmd.com/read/28932012/the-effects-of-abdominal-interferential-current-therapy-on-waist-circumference-and-visceral-fat-distance-in-obese-women
#8
Young-Han Park, Jung-Ho Lee
[Purpose] The purpose of this study was to investigate the effects of interferential current therapy on the waist circumference and visceral fat length in obese women. [Subjects and Methods] In this study, we selected 30 patients whose body mass index was over 25 kg/m(2). The subjects were randomly assigned to receive interferential current therapy three times a week for four weeks (n=15) and transcutaneous electrical nerve stimulation three times a week for four weeks (n=15). Waist circumference was measured in cm using a tape measure with the participant in an upright posture, and the length of visceral fat was measured using a high-resolution, B-mode ultrasound machine...
September 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28931549/sacral-neuromodulation-blocks-pudendal-inhibition-of-reflex-bladder-activity-in-cats-insight-into-the-efficacy-of-sacral-neuromodulation-in-fowler-s-syndrome
#9
Xing Li, Jamie Uy, Michelle Yu, Shun Li, Katherine Theisen, Jeffrey Browning, Bing Shen, Jicheng Wang, James R Roppolo, William C de Groat, Changfeng Tai
This study tested the hypothesis that sacral neuromodulation, i.e. electrical stimulation of afferent axons in sacral spinal root, can block pudendal afferent inhibition of the micturition reflex. In α-chloralose anesthetized cats, pudendal nerve stimulation (PNS) at 3-5 Hz was used to inhibit bladder reflex activity while the sacral S1 or S2 dorsal root was stimulated at 15-30 Hz to mimic sacral neuromodulation and to block the bladder inhibition induced by PNS. The intensity threshold (T) for PNS or S1/S2 dorsal root stimulation (DRS) to induce muscle twitch of anal sphincter or toe was determined...
September 20, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28930862/an-innovative-ergometer-to-measure-neuromuscular-fatigue-immediately-after-cycling
#10
Douglas Doyle-Baker, John Temesi, Mary E Medysky, Robert J Holash, Guillaume Y Millet
PURPOSE: When assessing neuromuscular fatigue (NMF) from dynamic exercise using large muscle mass (e.g. cycling), most studies have delayed measurement for 1-3 min after task failure. This study aimed to determine the reliability of an innovative cycling ergometer permitting the start of fatigue measurement within 1 s after cycling. METHODS: Twelve subjects participated in two experimental sessions. Knee-extensor NMF was assessed by electrical nerve and transcranial magnetic stimulation with both a traditional chair set-up (PRE and POST-Chair, 2 min post-exercise) and the new cycling ergometer (PRE, every 3 min during incremental exercise and POST-Bike, at task failure)...
September 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28930838/clinical-efficacy-of-intravesical-electrical-stimulation-on-detrusor-underactivity-8-years-of-experience-from-a-single-center
#11
Han Deng, Limin Liao, Juan Wu, Guoqing Chen, Xing Li, Zhaoxia Wang, Li Wan
The aim of this study was to retrospectively evaluate the effectiveness of intravesical electrical stimulation (IVES) on detrusor underactivity (DU).From 2009 to 2016, a total of 105 patients with symptoms of DU who were treated with IVES were included in this retrospective study. The medical records, physical examination findings, urine culture results, and video-urodynamic studies were reviewed. Changes in post-void residual urine (PVR) and voiding efficiency (VE) were included for evaluation of efficacy...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28930702/gcamp-expression-in-retinal-ganglion-cells-characterized-using-a-low-cost-fundus-imaging-system
#12
Yao-Chuan Chang, Steven T Walston, Robert H Chow, James D Weiland
OBJECTIVE: Virus-transduced, intracellular-calcium indicators are effective reporters of neural activity, offering the advantage of cell-specific labeling. Due to the existence of an optimal time window for the expression of calcium indicators, a suitable tool for tracking GECI expression in vivo following transduction is highly desirable. APPROACH: We developed a noninvasive imaging approach based on a custom-modified, low-cost fundus viewing system that allowed us to monitor and characterize in vivo bright-field and fluorescence images of the mouse retina...
October 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28930542/deep-brain-stimulation-foundations-and-future-trends
#13
David J Aum, Travis S Tierney
Deep brain stimulation (DBS) has emerged as a revolutionary treatment option for essential tremor (ET), Parkinson's disease (PD), idiopathic dystonia, and severe obsessive-compulsive disorder (OCD). This article reviews the historical foundations of DBS including basal ganglia pathophysiological models, classic principles of electrical stimulation, technical components of the DBS system, treatment risks, and future directions for DBS. Chronic high frequency stimulation induces a number of functional changes from fast physiological to slower metabolic effects and ultimately leads to structural reorganization of the brain, so-called neuroplasticity...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28929919/evaluating-the-efficacy-of-functional-electrical-stimulation-therapy-assisted-walking-after-chronic-motor-incomplete-spinal-cord-injury-effects-on-bone-biomarkers-and-bone-strength
#14
B Catharine Craven, Lora M Giangregorio, S Mohammad Alavinia, Lindsie A Blencowe, Naaz Desai, Sander L Hitzig, Kei Masani, Milos R Popovic
To determine the efficacy of functional electrical stimulation therapy assisted walking (FES-T) compared to a conventional aerobic and resistance training (CONV) with respect to bone biomarkers and lower extremity bone strength outcomes among adults with chronic motor incomplete spinal cord injury (SCI). Design Parallel group randomized controlled trial ( www.clinicaltrials.gov - NCT0020196819). Site Tertiary academic rehabilitation centre in Canada. Methods Adults with chronic (≥18 months) motor incomplete SCI (C2-T12 AIS C-D) were consented and randomized to FES-T or CONV training for 45 minutes thrice-weekly for 4 months...
September 20, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28929907/management-of-obesity-after-spinal-cord-injury-a-systematic-review
#15
M H Shojaei, S M Alaviniaa, B C Craven
CONTEXT: Individuals with chronic spinal cord injury (SCI) are susceptible to central and visceral obesity and it's metabolic consequences; consensus based guidelines for obesity management after SCI have not yet been stablished. OBJECTIVES: To identify and compare effective means of obesity management among SCI individuals. METHODS: This systematic review included English and non-English articles, published prior to April 2017 found in the PubMed/Medline, Embase, CINAHL Psychinfo and Cochrane databases...
September 20, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28929741/visible-light-neural-stimulation-on-graphitic-carbon-nitride-graphene-photocatalytic-fibers
#16
Zhongyang Zhang, Ruodan Xu, Zegao Wang, Mingdong Dong, Bianxiao Cui, Menglin Chen
Light stimulation allows remote and spatiotemporally accurate operation that has been applied as effective, non-invasive means of therapeutic interventions. Here, visible light neural stimulation of graphitic carbon nitride (g-C3N4), an emerging photocatalyst with visible-light optoelectronic conversion, was for the first time investigated. Specifically, g-C3N4 was combined with graphene oxide (GO) in a 3D manner on the surfaces of electrospun polycaprolactone/gelatin (PG) fibers and functioned as a biocompatible interface for visible-light stimulating neuronal differentiation...
September 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28929631/accelerated-wound-healing-on-skin-by-electrical-stimulation-with-a-bioelectric-plaster
#17
Hiroyuki Kai, Takeshi Yamauchi, Yudai Ogawa, Ayaka Tsubota, Takahiro Magome, Takeo Miyake, Kenshi Yamasaki, Matsuhiko Nishizawa
Wound healing on skin involves cell migration and proliferation in response to endogenous electric current. External electrical stimulation by electrical equipment is used to promote these biological processes for the treatment of chronic wounds and ulcers. Miniaturization of the electrical stimulation device for wound healing on skin will make this technology more widely available. Using flexible enzymatic electrodes and stretchable hydrogel, a stretchable bioelectric plaster is fabricated with a built-in enzymatic biofuel cell (EBFC) that fits to skin and generates ionic current along the surface of the skin by enzymatic electrochemical reactions for more than 12 h...
September 20, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28929393/electrophysiological-characteristics-of-the-rat-azygos-vein-under-electrical-pacing-and-adrenergic-stimulation
#18
Alexandra D Ivanova, Vlad S Kuzmin
Rodent thoracic veins are characterized by an extended myocardial coating. In the present study, the electrical activity in the cardiac tissue of the rat azygos vein (AZV) was investigated for the first time. The atrial-like action potentials (AP) and atrial-like conduction of the excitation were observed in the rat AZV under continuous electrical pacing. Termination of electrical pacing resulted in spontaneous positive shift of resting membrane potential (RMP) in AZV. Boradrenaline induced biphasic effects on RMP in all quiescent AZV preparations but only in 25% preparations-bursts of spontaneous AP, which were suppressed by both α- and β-adrenoreceptor antagonists...
September 19, 2017: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/28929363/all-in-one-low-intensity-pulsed-ultrasound-stimulation-system-using-piezoelectric-micromachined-ultrasonic-transducer-pmut-arrays-for-targeted-cell-stimulation
#19
Wonjun Lee, Seungjun Yoo, Joontaek Jung, Woojin Kang, Wei Wang, Cheil Moon, Hongsoo Choi
A novel cell-stimulation system was fabricated using 10 × 29 piezoelectric micromachined ultrasonic transducer (pMUT) arrays for targeted ultrasonic cell stimulation. Both the diameter of a single pMUT element and the edge-to-edge gap were 120 μm, and the size of a pMUT array was 2.27 × 6.84 mm, to be placed at the bottom of a Transwell. The measured resonance frequency of a single pMUT element was 1.48 ± 0.13 MHz and the measured acoustic intensity of the pMUT array was 0.15 ± 0.03 MPa at 1 mm away from the transducer...
September 19, 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28928706/early-stroke-rehabilitation-of-the-upper-limb-assisted-with-an-electromyography-driven-neuromuscular-electrical-stimulation-robotic-arm
#20
Qiuyang Qian, Xiaoling Hu, Qian Lai, Stephanie C Ng, Yongping Zheng, Waisang Poon
BACKGROUND: Effective poststroke motor rehabilitation depends on repeated limb practice with voluntary efforts. An electromyography (EMG)-driven neuromuscular electrical stimulation (NMES)-robot arm was designed for the multi-joint physical training on the elbow, the wrist, and the fingers. OBJECTIVES: To investigate the training effects of the device-assisted approach on subacute stroke patients and to compare the effects with those achieved by the traditional physical treatments...
2017: Frontiers in Neurology
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